CN219304480U

CN219304480U - Solar power supply system and charging and discharging equipment

Info

Publication number: CN219304480U
Application number: CN202223610155.6U
Authority: CN
Inventors: 代合隆
Original assignee: Guangzhou Hengyao Electric Energy Industry Co ltd
Current assignee: Guangzhou Green Energy Manufacturing Co.,Ltd.
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-04
Anticipated expiration: 2032-12-30

Abstract

The application discloses solar power supply system and charge-discharge equipment, the system includes: the system comprises a first solar device, a charging and discharging main device and a load; the first solar equipment is connected with the charge-discharge main equipment through a first connecting cable; the first connecting cable is a cable with input and output positioned in the same connecting line; the load is connected with the first connecting cable in parallel through the second connecting cable; the second connecting cable is a cable with input and output positioned in the same connecting line; the charge-discharge main device includes: a main charge-discharge control management module and a main battery module; the main charge and discharge control management module is used for controlling the electric energy provided by the first solar equipment to charge the main battery module through the first connecting cable; and controlling the main battery module to output electric quantity to a load through the second connection cable; therefore, the solar power supply system is simple in wiring, wiring cost is reduced, and cost of the charging and discharging main equipment is further reduced.

Description

Solar power supply system and charging and discharging equipment

Technical Field

The application relates to the field of new energy, in particular to a solar power supply system and charging and discharging equipment.

Background

Solar energy is a green energy source, and with the high-speed development of modern technology, the use of solar energy gradually enters the public field of view, and is visible everywhere in daily life, for example: solar street lamps, solar monitoring, etc.

For household power supply in areas with power shortage or no power, solar household power utilization is particularly important. However, the existing household solar power supply product is generally complex in wiring, and the management of the battery needs to be separately managed and controlled for charging and discharging, so that the circuit cost is increased, and under the condition of insufficient electric quantity or more load, the expansion of the battery is limited to a certain extent, and the internal resistance of the circuit is increased, so that the system performance is reduced.

Disclosure of Invention

The application provides a solar power supply system to solve among the prior art the power supply system wiring complicacy, the great problem of circuit cost.

The application provides a solar power supply system, including: the system comprises a first solar device, a charging and discharging main device and a load;

the first solar equipment is connected with the charging and discharging main equipment through a first connecting cable; the first connecting cable is a cable with input and output positioned in the same connecting line;

The load is connected with the first connecting cable in parallel through a second connecting cable; the second connecting cable is a cable with the input and the output being positioned on the same connecting line;

the charge-discharge main device includes: a main charge-discharge control management module and a main battery module; the main charge-discharge control management module is used for controlling the electric energy provided by the first solar equipment to charge the main battery module through the first connecting cable; and controlling the main battery module to output the electric quantity to the load through the second connection cable.

In some embodiments, the main charge-discharge control management module includes: a main input/output adjustment circuit, a main charge threshold voltage processing sub-module and a main discharge variable voltage processing sub-module; the main discharging variable voltage processing sub-module is used for monitoring the electric quantity of the main battery module and controlling the main input/output adjusting circuit to output target voltage to the load according to the electric quantity; the main charging threshold voltage processing sub-module is used for monitoring the electric quantity of the main battery module and controlling the input threshold voltage of the main battery module through the main input/output adjusting circuit according to the electric quantity.

In some embodiments, further comprising: the first voltage adapter is connected between the first solar equipment and the charging and discharging main equipment; one end of the first connecting cable is connected with the first voltage adapter, and the other end of the first connecting cable is connected with the main charge and discharge control management module.

In some embodiments, the main battery module comprises at least two main battery modules connected in parallel and/or at least two main battery modules connected in series.

In some embodiments, the main battery modules include a first type main battery module and a second type main battery module.

In some embodiments, further comprising: the charging and discharging slave equipment and the charging and discharging master equipment are connected in parallel and connected with the second connecting cable; or the charging and discharging slave device is connected with an interface of the second connecting cable arranged in the charging and discharging master device through a third connecting cable; the charge-discharge slave apparatus includes: a slave charge and discharge control management module and a slave battery module; the secondary charging and discharging control management module is used for controlling the electric quantity of the secondary battery module to be output to the load through the second connecting cable; and controlling the electric power provided by the first solar device to charge the slave battery module through the first connection cable and the second connection cable.

In some embodiments, the slave charge-discharge control management module includes: a slave input/output adjustment circuit, a slave charge threshold voltage processing sub-module, and a slave discharge variable voltage processing sub-module; the secondary discharge variable voltage processing sub-module is used for monitoring the electric quantity of the secondary battery module and controlling the secondary input/output adjusting circuit to output target voltage to the load according to the electric quantity; the secondary charging threshold voltage processing sub-module is used for monitoring the electric quantity of the secondary battery module and controlling the input threshold voltage of the secondary battery module through the secondary input/output adjusting circuit according to the electric quantity.

In some embodiments, further comprising: a second solar device; the second solar device is connected with the charging and discharging slave device through a fourth connecting cable, and the fourth connecting cable is connected with the second connecting cable.

In some embodiments, further comprising: the second voltage adapter is connected between the second solar equipment and the charging and discharging slave equipment; one end of the fourth connecting cable is connected with the second voltage adapter, and the other end of the fourth connecting cable is connected with the slave charge and discharge control management module.

In some embodiments, the slave battery modules include at least two slave battery modules connected in parallel and/or at least two slave battery modules connected in series.

In some embodiments, the slave battery modules include a first type of slave battery module and a second type of slave battery module.

The application also provides a charge-discharge device comprising: a charge-discharge control management module and a battery module; the charge-discharge control management module comprises a charge threshold voltage processing sub-module, a discharge variable voltage processing sub-module and an input/output adjusting circuit;

the charging threshold voltage processing sub-module is used for monitoring the electric quantity of the battery module, and when the electric quantity meets a charging condition, the charging threshold voltage processing sub-module controls the input threshold voltage of the battery module through the input/output adjusting circuit according to the electric quantity; the discharging variable voltage processing sub-module is used for monitoring the electric quantity of the battery module and controlling the target output voltage provided by the battery module to the load through the input/output adjusting circuit according to the electric quantity.

In some embodiments, the input/output adjustment circuit is connected to the charge threshold voltage processing sub-module, the discharge variable voltage processing sub-module, and the battery module, respectively; the battery module is respectively connected with the charging threshold voltage processing submodule and the discharging variable voltage processing submodule; or, the input adjusting circuit is arranged in the charging control management module and is connected with the charging threshold voltage processing sub-module and the battery module, and the output adjusting circuit is arranged in the discharging control management module and is connected with the discharging variable voltage processing sub-module and the battery module.

In some embodiments, the battery module includes at least two battery modules connected in parallel and/or at least two battery modules connected in series.

In some embodiments, the at least two parallel and/or at least two series connected battery modules comprise: a first type battery module and a second type battery module.

The application also provides a charging and discharging method of the solar power supply system, which comprises the following steps:

determining the output voltage of a main battery or the charging threshold voltage of the main battery according to the monitored electric quantity of the main battery of the charging and discharging main equipment in the solar power supply system;

supplying power to a load according to the output voltage;

and charging the main battery according to the charging threshold voltage.

In some embodiments, further comprising:

monitoring the slave battery electric quantity of a charge-discharge slave device connected with the charge-discharge master device in parallel in the solar power supply system;

determining the discharge priority or the charge priority of the charge-discharge slave equipment and the charge-discharge master equipment according to the slave battery electric quantity and the master battery electric quantity;

determining the order of power supply to the load according to the discharge priority; or, according to the charging priority, the order of charging the master battery and the slave battery is performed.

In some embodiments, the determining the discharge priority of the charge-discharge slave device and the charge-discharge master device according to the slave battery power and the master battery power includes:

determining that the slave battery and the master battery are in a discharging mode according to the electric quantity of the slave battery and the electric quantity of the master battery and/or according to the voltage of a connecting cable;

and according to the discharging mode, adjusting the discharging priority of the discharging slave equipment to be larger than the discharging priority of the charging and discharging master equipment.

In some embodiments, said adjusting the discharge priority of the discharge slave device to be greater than the discharge priority of the charge-discharge master device according to the discharge pattern comprises:

according to the electric quantity of the main battery, the output voltage of the main battery is adjusted to be smaller than the output voltage of the auxiliary battery through a main input/output adjusting circuit of the charging and discharging main device;

and determining that the discharging priority of the secondary battery is greater than that of the main battery according to the output voltage of the secondary battery and the adjusted output voltage of the main battery.

In some embodiments, the determining the charging priority of the charging and discharging slave device and the charging and discharging master device according to the slave battery power and the master battery power includes:

Determining that the slave battery and the master battery are in a charging mode according to the electric quantity of the slave battery and the electric quantity of the master battery and/or according to the voltage of a connecting cable;

and according to the charging mode, adjusting the charging priority of the charging and discharging main equipment to be larger than the charging priority of the charging and discharging auxiliary equipment.

In some embodiments, the adjusting the charging priority of the charging and discharging master device to be greater than the charging priority of the charging and discharging slave device according to the charging mode includes:

according to the electric quantity of the secondary battery, the charging threshold voltage of the secondary battery is adjusted to be larger than the charging threshold voltage of the main battery through a secondary input/output adjusting circuit of the charging and discharging secondary device;

and determining that the charging priority of the master battery is greater than the charging priority of the slave battery according to the charging threshold voltage of the master battery and the adjusted charging threshold voltage of the slave battery.

Compared with the prior art, the application has the following advantages:

according to the solar power supply system, on one hand, the charging and discharging are combined (namely, input and output are combined), and the charging and discharging are completed through the bus, so that the wiring of the solar power supply system is simple, the wiring cost is reduced, and the cost of charging and discharging main equipment is further reduced. On the other hand, when the charge-discharge main equipment cannot meet the electric quantity requirement of a load, charge-discharge auxiliary equipment can be added, and compared with a distributed expansion mode (the charge-discharge auxiliary equipment is connected in parallel on a bus) by adopting a mode of expanding the inside of the charge-discharge main equipment, the charge-discharge auxiliary equipment is increased or expanded without being influenced by the circuit power bottleneck of the charge-discharge main equipment, and only needs to be simply connected according to the electric quantity requirement, so that the expansion mode is simpler and flexible and is not limited by quantity; further, the application is not limited by the type, number and voltage of the battery in the charging/discharging master/slave device when the expansion device is performed. Furthermore, through the charge threshold voltage and the discharge variable voltage processing submodule, balance of charge and discharge and weighting of charge and discharge master/slave equipment can be realized, so that charge and discharge with different priorities can be realized according to the weights, and the power supply of a load is more stable. Furthermore, the voltage adapter is connected between the solar panel and the bus, so that the problem that MPPT cannot track the maximum power point due to the fact that a plurality of charge and discharge master/slave devices are connected in parallel on the bus is avoided, and the parallel connection on the bus is not limited to be expanded due to the matching problem. Further, each solar panel can be connected with an independent adapter, so that each solar panel is in an optimal matching state, the system is optimized with the maximum power output, and the compatibility is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a solar power supply system provided in the present application;

fig. 2 is a schematic structural diagram of a first embodiment of a charging and discharging main device in a solar power supply system provided in the present application;

fig. 3 is a schematic structural diagram of a second embodiment of a charging and discharging main device in a solar power supply system provided in the present application;

FIG. 4 is a schematic view of a second embodiment of a solar power supply system according to the present application;

fig. 5 is a schematic structural diagram of a first embodiment of a charge-discharge slave device in a solar power supply system provided in the present application;

fig. 6 is a schematic structural diagram of a second embodiment of a charge-discharge slave device in a solar power supply system provided in the present application;

fig. 7 is a schematic structural diagram of a first embodiment of an application scenario of a solar power supply system provided in the present application;

fig. 8 is a schematic structural diagram of a second embodiment of an application scenario of a solar power supply system provided in the present application;

fig. 9 is a schematic structural diagram of a third embodiment of an application scenario of a solar power supply system provided in the present application;

fig. 10 is a schematic structural diagram of a fourth embodiment of an application scenario of a solar power supply system provided in the present application;

Fig. 11 is a schematic structural diagram of a fifth embodiment of an application scenario of a solar power supply system provided in the present application;

fig. 12 is a schematic structural view of an embodiment of a charge and discharge apparatus provided in the present application;

fig. 13 is a flowchart of an embodiment of a charging and discharging method of a solar power supply system provided in the present application.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other ways than those herein described and similar generalizations can be made by those skilled in the art without departing from the spirit of the application and the application is therefore not limited to the specific embodiments disclosed below.

The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The manner of description used in this application and in the appended claims is for example: "a", "a" and "a" etc. are not limited in number or order, but are used to distinguish the same type of information from each other.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a solar power supply system provided in the present application, where the solar power supply system may include: the system comprises a first solar device, a charging and discharging main device and a load;

The first solar equipment is connected with the charging and discharging main equipment through a first connecting cable; the first connecting cable is a cable with input and output positioned in the same connecting line; i.e. the first connection line is a cable integrating input and output. In this embodiment, the first solar device is a solar panel, and is a device for collecting solar energy and converting the solar energy into electric energy.

The load is connected with the first connecting cable in parallel through a second connecting cable; the second connecting cable is a cable with the input and the output being positioned on the same connecting line; in the present embodiment, the load may be a home electric appliance apparatus, for example: lighting fixtures, televisions, fans, refrigerators, and the like. The second connection cable is also an input and output integrated cable, and may be called a bus, similar to the first connection cable.

The charge-discharge main device includes: a main charge-discharge control management module and a main battery module; the main charge-discharge control management module is used for controlling the electric energy provided by the first solar equipment to charge the main battery module through the first connecting cable; and controlling the main battery module to output the electric quantity to the load through the second connection cable. In this embodiment, the charging and discharging main device is configured to store the electric energy provided by the first solar device in the battery, and supply power to the load through the battery, so that the battery can be charged when the electric quantity of the battery is insufficient. In this embodiment, the battery may supply power to the load, where the load requires the battery to supply power, for example: when the solar panel collects insufficient solar energy or the solar panel cannot provide solar energy at night. Under the condition that the solar panel can collect solar energy, the solar energy can be directly converted into electric energy through the solar panel and provided for a load, and the battery can be charged.

In this embodiment, the charging and discharging main device may be connected to the first connection cable in a hot plug manner, that is, the charging and discharging main device may be connected to other devices requiring electric quantity as a mobile power source and provide electric quantity in a state of being separated from the first connection cable.

As shown in fig. 2, fig. 2 is a schematic structural diagram of a first embodiment of a charging and discharging main device in a solar power supply system provided in the present application, where the charging and discharging main device may include: a main charge-discharge control management module and a main battery module; the main charge and discharge control management module may include: a main input/output adjustment circuit, a main charge threshold voltage processing sub-module and a main discharge variable voltage processing sub-module; the main discharging variable voltage processing sub-module is used for monitoring the electric quantity of the main battery module and controlling the main input/output adjusting circuit to output target voltage to the load according to the electric quantity; the main charging threshold voltage processing sub-module is used for monitoring the electric quantity of the main battery module and controlling the input threshold voltage of the main battery module through the main input/output adjusting circuit according to the electric quantity. Specifically, the main discharging variable voltage processing sub-module can acquire voltage and/or current information of the main battery module in real time, so that the current electric quantity condition of the main battery module can be monitored. Determining an output target voltage value according to the monitored current electric quantity, for example: when the current electric quantity of the monitored main battery module is low, the output voltage is controlled by the main input/output adjusting circuit, so that the output voltage is reduced within a certain range, and the output target voltage is obtained. When the current electric quantity of the monitored main battery module is higher, the output voltage is controlled by the main input/output adjusting circuit, so that the output voltage is improved within a certain range, and the output target voltage is obtained. The process can enable the output target voltage to change in a certain range along with the change of the electric quantity, thereby realizing discharge balance (preferential discharge with high electric quantity).

It should be noted that, the current power level of the main battery module is low and the current power level is high, which may be determined in combination with the power consumption environment, for example: the current power level can be set and dynamically modified in combination with the above environments, such as, for example, during the day and night, sunny and cloudy days, and power of the electric devices, etc.: 10% is lower and 80% is higher. In this embodiment, there is no specific standard or limitation on the current power level, and the setting may be performed in combination with the use environment or the like.

Specifically, the main charging threshold voltage processing sub-module may also collect voltage and/or current information of the main battery module in real time, so as to monitor a current electric quantity condition of the main battery module. According to the current electric quantity of the main battery module, the input adjusting circuit is used for controlling the lowest input threshold voltage (namely, the charging threshold voltage) of the main battery module, so that the charging threshold voltage can be controlled according to electric quantity change, namely, the charging threshold voltage is adjusted, and the charging of the main battery module can reach an equilibrium state; when the input voltage in the charging state is lower than the charging threshold voltage, the charging control circuit (namely, the charging threshold voltage processing submodule and the input adjusting circuit) reduces the charging power, the input voltage can rise immediately due to the reduction of the charging power, and when the rising of the input voltage meets the threshold voltage, the charging power can also increase accordingly, so that a dynamic adjusting process is formed, and the charging threshold voltage indirectly influences the charging power. When the current electric quantity of the main battery module is low, the charging threshold voltage can be set to be low, which means that the external voltage is low and the main battery module can be charged, otherwise, when the current electric quantity of the main battery module is high, which means that the external voltage (for example, bus voltage) is high, the main battery module can be charged. In this embodiment, the adjustment of the charging threshold voltage may be implemented by an input/output adjustment circuit.

In this embodiment, the main input/output adjusting circuit is disposed on an external circuit of the main charge threshold voltage processing sub-module and the main discharge variable voltage processing sub-module. The main input/output adjusting circuit may be a buck-boost circuit.

As shown in fig. 3, fig. 3 is a schematic structural diagram of a second embodiment of a charge-discharge main device in a solar power supply system provided in the present application, where the difference between the second embodiment and the first embodiment is that the main input/output adjustment circuit is differently arranged, and in the second embodiment, the main input/output adjustment circuit may be arranged inside the main charge threshold voltage processing sub-module and/or the main discharge variable voltage processing sub-module. In the second embodiment, the main charge and discharge control management module includes: the main charging control management module comprises a main input adjusting circuit and a main charging threshold voltage processing sub-module; the main discharge control management module comprises an output adjusting circuit and a main discharge variable voltage processing sub-module.

It will be appreciated that, in either the first embodiment or the second embodiment, the input/output adjustment circuit can ensure an equilibrium state of discharging and/or charging of the main battery module, and in addition, the main battery module may use a single battery, or may use multiple serial and/or multiple parallel modes, so in this embodiment, the main battery module may use a suitable battery parallel and/or serial mode according to an application scenario, and the battery type of the main battery module may be diversified, that is: the main battery modules include at least two parallel and/or at least two series-connected main battery modules, which may be a first type main battery module and a second type main battery module, for example: can be ternary batteries, iron lithium batteries and the like. Of course, if a single battery is still suitable for different types, and the battery can be replaced according to the requirement, the replacement is not limited to the same type of battery.

Under the scene of household electricity, guarantee that solar power supply system can adapt to different grade type's load, can also include: a first voltage adapter. As shown in fig. 4, fig. 4 is a schematic structural diagram of a second embodiment of a solar power supply system provided in the present application, where the second voltage adapter may be connected between the first solar device and the charging and discharging main device; one end of the first connecting cable is connected with the first voltage adapter, and the other end of the first connecting cable is connected with the main charge and discharge control management module. Namely: the solar panel may be connected to an input/output bus through a first voltage adapter, and the input/output bus may be a first connection cable and a second connection cable, which are integrated in input and output, and may include a third connection cable and a fourth connection cable, etc. The first voltage adapter can avoid that the load cannot bear excessive voltage, so that the highest voltage output by the first solar equipment is controlled within the range that the load can bear. Meanwhile, the first solar equipment can be matched with solar panels of various specification types, so that the solar panels in the solar power supply system can have wider selection range.

In this embodiment, the first voltage adapter may include a maximum power point tracking technology (MPPT: maximum Power Point Tracking), so that when the load, the ambient temperature, and the illumination intensity change, the solar panel (may be referred to as a photovoltaic cell) always maintains the maximum output power, so that the solar energy utilization rate can be maintained in a maximized state, and solar energy is more fully utilized. In this embodiment, we place the adapter between the solar panel and the bus, and compared with the case of placing the adapter inside each master/slave device, he will not have the problem that the MPPT cannot track the maximum power point due to the parallel connection of multiple master/slave devices on the bus, so that the parallel connection on the bus is not limited by the matching problem any more. For example, as shown in fig. 6, each solar panel is connected with an independent adapter, so that each solar panel is in an optimal matching state, high power output is achieved, the superiority of the system is reflected, and the compatibility is improved.

Under the environment of no electricity or lack of electricity and new energy use environment, then need provide the electric quantity for more tame electric installation under the solar energy home use scene, this application still can further expand charge-discharge main equipment based on above-mentioned solar power supply system, consequently, can also include: and charging and discharging the slave device. As shown in fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of a first embodiment of a charging and discharging slave device in a solar power supply system provided in the present application; fig. 6 is a schematic structural diagram of a second embodiment of a charge-discharge slave device in a solar power supply system provided in the present application; the connection mode of the charging and discharging slave equipment in the solar power supply system can comprise at least two modes:

The first may be:

the charging/discharging slave device and the charging/discharging master device may be connected in parallel, specifically, the charging/discharging slave device is connected to the second connection cable, and the connection mode may also be a plug-in mode, for example: and (5) hot plug. Of course, the charging and discharging slave device may also be connected to the interface of the second connection cable laid in the charging and discharging master device through a third connection cable, that is: the charging and discharging slave device can be connected to the charging and discharging master device and then connected with the bus. The charging and discharging slave equipment and the charging and discharging master equipment can also be connected in a plug-in mode.

The second may be:

the charging and discharging slave equipment is connected with an interface of the second connecting cable arranged in the charging and discharging master equipment through a third connecting cable; namely: the charging and discharging slave device is directly connected with the bus.

The two connection modes are different in that one slave discharging slave device is connected with a bus through the charge and discharge master device, and the other slave discharging slave device is directly connected with the bus.

In this embodiment, the charging and discharging slave device and the charging and discharging master device may have the same structure, and the charging and discharging slave device may be connected in parallel with a plurality of charging and discharging slave devices according to requirements in any of the modes described above; the charge-discharge slave device may include: a slave charge and discharge control management module and a slave battery module; the secondary charging and discharging control management module is used for controlling the electric quantity of the secondary battery module to be output to the load through the second connecting cable; and controlling the electric power provided by the first solar device to charge the slave battery module through the first connection cable and the second connection cable.

The slave charge and discharge control management module includes: a slave input/output adjustment circuit, a slave charge threshold voltage processing sub-module, and a slave discharge variable voltage processing sub-module; the secondary discharge variable voltage processing sub-module is used for monitoring the electric quantity of the secondary battery module and controlling the secondary input/output adjusting circuit to output target voltage to the load according to the electric quantity; the secondary charging threshold voltage processing sub-module is used for monitoring the electric quantity of the secondary battery module and controlling the input threshold voltage of the secondary battery module through the secondary input/output adjusting circuit according to the electric quantity.

Likewise, the slave input/output adjustment circuit may be disposed on an external line of the slave charge threshold voltage processing sub-module and the slave discharge variable voltage processing sub-module; the secondary charging threshold voltage processing sub-module and/or the secondary discharging variable voltage processing sub-module may be arranged inside; the layout mode can be the same as that of the main charge-discharge equipment. The processing principle of the charge-discharge slave device is the same as that of the charge-discharge master device, and will not be described in detail here.

It should be noted that, when the charging and discharging slave device includes a plurality of charging and discharging slave devices, the connection manner may include: the first charge-discharge slave equipment and the charge-discharge master equipment can be connected by adopting the two connection modes, and the second charge-discharge slave equipment can be connected with the first charge-discharge slave equipment or a bus; similarly, the third charge-discharge slave device and the fourth charge-discharge slave device can also adopt the connection mode. The connection may also be in a pluggable form, so in this embodiment, the connection manner of the charging and discharging slave device is not particularly limited.

When there are one or more charge-discharge slave devices connected in parallel with the charge-discharge master device, in order to maintain the electric quantity of the charge-discharge master device, in this embodiment, during discharging, discharging may be performed according to the priorities of the charge-discharge master device and the charge-discharge slave device. For example: and controlling the output voltage of the main battery through a main input/output adjusting circuit according to the electric quantity of the main battery, so that the output voltage of the auxiliary battery is larger than the output voltage adjusted by the main battery, and then the discharging priority of the auxiliary battery is larger than the discharging priority of the main battery, so that the charging and discharging auxiliary equipment discharges preferentially, and the charging and discharging main equipment keeps higher electric quantity.

In order to ensure that the main battery in the main charging and discharging equipment is charged with priority, the embodiment can charge according to the priorities of the charging and discharging main equipment and the charging and discharging auxiliary equipment during charging; for example: according to the electric quantity of the secondary battery, the charging threshold voltage of the secondary battery is adjusted to be larger than the charging threshold voltage of the main battery through a secondary input/output adjusting circuit of the charging and discharging secondary device; therefore, the charging threshold voltage of the main battery is smaller than that of the auxiliary battery, and the main battery is charged preferentially.

It can be understood that the charging and discharging slave device in this embodiment may also be used as a mobile power supply.

In order to ensure that the solar power supply system can normally provide electric quantity under the conditions of multiple loads and larger electric quantity consumption of the loads, the electric quantity provision of the charge-discharge slave equipment can also be realized through the second solar equipment, namely, when the electric quantity requirement of the loads is smaller, the slave battery module can be charged through the first solar equipment, so that the slave battery module can provide electric energy for the loads when the electric quantity is required by the loads; when the power demand of the load is large, the secondary battery module can be charged through the second solar device so as to provide power for the load when the load needs the power. Therefore, the present embodiment may further include: a second solar device.

The second solar device is connected with the charging and discharging slave device through a fourth connecting cable, and the fourth connecting cable is connected with the second connecting cable. I.e. on a bus to which both the second solar device and the slave discharge slave device can be connected.

Likewise, to ensure that the solar power supply system can adapt to different types of loads, the method may further include: the second voltage adapter is connected between the second solar equipment and the charging and discharging slave equipment; one end of the fourth connecting cable is connected with the second voltage adapter, and the other end of the fourth connecting cable is connected with the slave charge and discharge control management module.

It is understood that when there are a plurality of charge-discharge slave devices, each charge-discharge slave device may be connected to a second solar power supply device, and the second voltage adapter may be disposed between the charge-discharge slave device and the second solar power supply device. Of course, the layout of the second solar power supply device and the second voltage adapter can be determined according to the power supply requirement, and the number of the layout and the connection mode can be laid out according to the application requirement and the environment requirement.

Likewise, the slave battery module may be a single battery or a plurality of batteries connected in series and/or parallel, as in the master battery module. For example: at least two slave battery modules connected in parallel and/or in series may be included, and the number of the slave battery modules connected in parallel and/or in series may be increased or decreased as needed. When the slave battery module comprises at least two slave battery modules, the slave battery modules can be the same type of battery or different types of battery; the battery is still suitable for different types when being a single battery, and the battery can be replaced according to the requirement, and the replacement is not limited to the same type of battery. Of course, the type of the slave battery module herein may be a plurality of different types of batteries in one charge and discharge device, or may be different types of batteries in different charge and discharge devices. Therefore, there is no limitation in the present embodiment as to the type of the master battery module or the slave battery module, and there is no limitation in the number and form of connections.

It should be noted that, in this embodiment, any battery type, number, connection mode, etc. set in the charging/discharging master/slave device may be enabled to meet the standard of the bus voltage by the input/output adjustment circuit.

The above is a description of an embodiment of a solar power supply system provided by the application, in this embodiment, on one hand, charging and discharging are combined and completed through a bus, so that the wiring of the solar power supply system is simple, the wiring cost is reduced, and the cost of a charging and discharging main device is further reduced. On the other hand, when the charge-discharge main equipment can not meet the electric quantity demand of the load, the charge-discharge auxiliary equipment can be added, the addition or expansion of the charge-discharge auxiliary equipment can not be influenced by the circuit power bottleneck of the charge-discharge main equipment, and only the charge-discharge main equipment is simply connected according to the electric quantity demand, so that the expansion mode is simpler and flexible and is not limited by the quantity. When the solar power supply system comprises a plurality of charging and discharging slave devices, automatic equalization of charging can be realized. In order to ensure user experience, the charging and discharging main equipment can be ensured to be charged preferentially under the scene comprising the charging and discharging main equipment and the charging and discharging auxiliary equipment.

The above is a specific description of an embodiment of a solar power supply system provided in the present application, where the solar power supply system provided in the present application may be applied to a household, as shown in fig. 7 to 11, which is an application scenario diagram of the solar power supply system; in the home application scenario, the connection manner between the charging and discharging master device and the bus may include the cases described in the foregoing embodiments, and when the charging and discharging slave device is included in the application scenario, the connection manner may include the foregoing multiple cases, which will not be described in detail herein, and may be specifically described in connection with fig. 7 to 11 and the foregoing embodiments.

Corresponding to the foregoing provided embodiment of a solar power supply system, the present application further discloses an embodiment of a charging and discharging device, please refer to fig. 12, fig. 12 is a schematic structural diagram of the embodiment of the charging and discharging device provided in the present application, which may include: a charge-discharge control management module and a battery module; the charge-discharge control management module comprises a charge threshold voltage processing sub-module, a discharge variable voltage processing sub-module and an input/output adjusting circuit;

the charging threshold voltage processing sub-module is used for monitoring the electric quantity of the battery module, and can acquire the voltage and/or current information of the battery module in real time, so that the current electric quantity condition of the battery module can be monitored. According to the current electric quantity of the battery module, the input/output adjusting circuit is used for controlling the charging threshold condition of the battery module, namely the charging threshold voltage, so that the change of the charging threshold voltage can be controlled according to the electric quantity, when the input voltage during charging is lower than the charging threshold voltage, the charging threshold voltage processing submodule is used for controlling to reduce the charging power of the battery module, the input voltage is increased due to the fact that the charging power is reduced, the voltage is increased immediately, the charging threshold voltage is further met, the charging power is increased accordingly, a dynamic adjusting process is formed, and the charging threshold voltage indirectly influences the charging power. When the electric quantity is relatively low, the charging threshold voltage set by the charging threshold voltage processing sub-module is relatively low, which means that the battery module can be charged even if the external voltage is relatively low, otherwise, when the electric quantity is relatively high, which means that the battery module can be charged even if the external voltage is relatively high.

The discharging variable voltage processing sub-module can acquire voltage and/or current information of the main battery module in real time, so that the current electric quantity condition of the main battery module can be monitored. Determining an output target voltage value according to the monitored current electric quantity, for example: when the current electric quantity of the monitored main battery module is low, the output voltage is controlled by the main input/output adjusting circuit, so that the output voltage is reduced within a certain range, and the output target voltage is obtained. When the current electric quantity of the monitored main battery module is higher, the output voltage is controlled by the main input/output adjusting circuit, so that the output voltage is improved within a certain range, and the output target voltage is obtained. The process can enable the output target voltage to change in a certain range along with the change of the electric quantity, thereby realizing discharge balance (preferential discharge with high electric quantity).

Reference may be made to the description of fig. 2 and 3 above with respect to the internal processing logic of the charge-discharge device, which is not repeated here. The charge and discharge device in this embodiment may refer to a master device or a slave device. When a charge and discharge device is installed in a solar power supply system, the charge and discharge device can be added or expanded according to the power consumption requirement, the added or expanded device is a charge and discharge slave device, and the charge and discharge slave device can comprise one or more charge and discharge slave devices according to the requirement.

In this embodiment, the charging and discharging device is provided with a charging interface, so that the mobile intelligent device or the mobile power supply can be charged, and a battery can be connected. The charging and discharging device is internally provided with a wireless receiver, for example: infrared, bluetooth or wifi etc. can realize the wireless control to the charge-discharge equipment, for example: in a household solar power supply system, a wireless switch is arranged to control the on/off of charging and discharging equipment. The charging interface can be an interface connected with a bus, can directly charge the connecting equipment through electric energy provided by the solar panel, and can be a connecting interface for connecting a charging and discharging slave device; the charging interface may also be an interface to an external power supply battery that may charge the charging and discharging device, such as a recharging scheme when the solar panel is unable to provide power. Therefore, in this embodiment, the same interface may be adopted for different devices, and separate interfaces and components are not required to be set for different devices, so that when the charging and discharging device is a charging and discharging master device, priority charging right may be obtained, and when the charging and discharging device is a charging and discharging slave device (a charging and discharging slave device, a mobile power supply and the like), the charging and discharging device is set to perform discharging preferentially, that is, power is supplied to a load, and then the charging and discharging master device performs discharging, so that the charging and discharging master device is powered off finally, and user operation control is facilitated. Reference may be made in particular to the following description of embodiments of a charge and discharge method of a solar power supply system.

Similarly, both the charge-discharge master device and the charge-discharge slave device can be respectively connected with the respective solar panels, and further, the charge-discharge master device can be provided with an input/output adjusting circuit, namely a master input/output adjusting circuit, and the charge-discharge slave device can also be provided with an input/output adjusting circuit, namely a slave input/output adjusting circuit. The input/output adjusting circuit is connected with the charging threshold voltage processing sub-module, the discharging variable voltage processing sub-module and the battery module respectively; the battery module is respectively connected with the charging threshold voltage processing submodule and the discharging variable voltage processing submodule; or the input/output adjusting circuit is respectively arranged in the charging threshold voltage processing sub-module and the discharging variable voltage processing sub-module and is connected with the battery module. In this embodiment, the input/output adjustment circuit may limit or adjust the input threshold voltage, may adjust and control the output voltage, may adjust and control the charging power, and may perform current limiting protection control on the charging and discharging currents as required; that is, the charge and discharge control of the battery can be achieved by the cooperation of the charge and discharge control management module and the input/output adjustment circuit. In this embodiment, the input/output adjustment circuit may be a buck-boost circuit.

The battery module in this embodiment may adopt a single battery, or may adopt a mode of multiple series connection and/or multiple parallel connection. For example: the battery module can comprise at least two battery modules which are connected in parallel and/or in series, can be arranged inside the charging and discharging equipment, and can also be arranged outside the charging and discharging equipment according to the requirements, namely connected through an interface. In this embodiment, when there are multiple parallel charge-discharge slave devices, each charge-discharge slave device and each charge-discharge master device may be connected to a solar panel and a voltage adapter (may include an MPPT function), so that the voltage adapter and the solar panel are all independently operated, and it is ensured that they can be matched with the solar panel, so that the solar panel can be in a maximum power output state. In this embodiment, the at least two parallel and/or at least two series-connected battery modules include: a first type battery module and a second type battery module. Of course, if a single battery is still suitable for different types, and the battery can be replaced according to the requirement, the replacement is not limited to the same type of battery. In this embodiment, the charging and discharging master device may be connected to the first solar panel and the first voltage adapter, the charging and discharging slave device may also be connected to the second solar panel and the second voltage adapter, or the charging and discharging master device may be connected to the first solar panel and the first voltage adapter, and the charging and discharging slave device does not configure the solar panel and the voltage adapter.

In this embodiment, a user interaction interface is further provided on the charging and discharging device, where battery power information, connection load information, charging information for the mobile device, and user-available interaction operation information may be displayed in the user interaction interface.

It may be appreciated that the information displayed in the user interaction interface may be output in a form of voice broadcast, for example: when the input voltage determined according to the battery electric quantity of the charging and discharging equipment exceeds the lowest charging threshold voltage of charging or the battery electric quantity reaches the charging threshold value, a prompt tone or voice broadcasting can be sent out to prompt a user to enter a charging state mode. Likewise, when the output target voltage is obtained through the input/output adjustment circuit according to the battery charge amount of the charge and discharge apparatus, or when the discharge threshold is satisfied, a prompt to the user to enter the discharge state mode may also be issued. The electric quantity can be prompted according to a set time period, and the conditions of power supply or abnormal charging and the like can be broadcasted.

The foregoing description of the embodiments of the charging and discharging device provided in the present application may be specifically combined with the solar power supply system described above, which is only schematically described herein.

Based on the foregoing, the present application further provides a charging and discharging method of a solar power supply system, as shown in fig. 13, fig. 13 is a flowchart of an embodiment of a charging and discharging method of a solar power supply system provided in the present application, where the embodiment may include:

step S1301: determining the output voltage of a main battery or the charging threshold voltage of the main battery according to the monitored electric quantity of the main battery of the charging and discharging main equipment in the solar power supply system;

step S1302: supplying power to a load according to the output voltage; or, step S1303: and charging the main battery according to the charging threshold voltage.

The solar power supply system in the step S1301 may be a system as shown in fig. 1 to 6, and specifically, the discharge variable voltage processing sub-module and the charge threshold voltage processing sub-module in the charge and discharge main device may monitor the electric quantity of the main battery module, respectively. The manner in which the power of the main battery module is typically monitored may include: battery voltage method and charge accumulating method. In this embodiment, for monitoring the electric quantity of the main battery, the voltage and/or the current of the main battery may be monitored to convert the voltage and/or the current into the electric quantity, so as to obtain the electric quantity of the main battery module. The discharging variable voltage processing sub-module and the charging threshold voltage processing sub-module in the charging and discharging main equipment can respectively monitor the electric quantity of the main battery module. The power of the main battery module is usually monitored by a power accumulating method.

For the discharge mode, for example, when the electric quantity is 0%, then output=12v+1v×0% =12v, and if the electric quantity is 50%, output=1v+1v×50% =12.5v, and so on, that is, the output voltage is changed in a small range according to the electric quantity, the higher the voltage; and then the output voltage can be adjusted according to the condition of the electric quantity, for example: when the battery power is low, the output voltage can be adjusted to be lower; when the battery power is high, the output voltage can be adjusted to be high.

For the charging mode, for example, when the electric quantity is 0%, then the charging threshold voltage=14v+1v×0% =14v, and if the electric quantity is 50%, then the charging threshold voltage=14v+1v×50% =14.5V, and so on, that is, the charging threshold voltage is changed in a small range according to the electric quantity, the higher the electric quantity is, the higher the charging threshold voltage is; furthermore, the charging threshold voltage can be adjusted according to the condition of the electric quantity, for example: when the battery power is low, the charging threshold voltage can be regulated down; when the battery power is high, the charging threshold voltage can be increased. In the discharging mode, the adjustment of the output voltage, and in the charging mode, the adjustment of the charging threshold voltage may be achieved by the input/output adjustment circuit. Therefore, the charge and discharge adjustment can be carried out by combining the condition of the battery electric quantity, so that the output voltage and the charge threshold voltage can be respectively more adaptive to one or more parameters of the current electric quantity of the battery, the electric energy provided by the solar panel, the bus voltage and the like.

In other embodiments, it may also be determined whether the corresponding requirements are met according to the power thresholds set by the discharge and charge requirements, such as: when the discharge electric quantity threshold is set to 20%, judging whether the electric quantity of the main battery module is more than or equal to 20%, if so, indicating that the electric quantity of the main battery module meets the discharge requirement, and determining an output voltage value according to the electric quantity value; for example: when the electric quantity of the main battery module is low, the output voltage value can be low; when the power of the main battery module is high, the output voltage value may be high.

Based on the above embodiment of the solar power supply system, the present embodiment may also include a discharge slave device connected in parallel with the discharge master device, where the discharge slave device may include one or more discharge slave devices, and therefore, the method of charging and discharging may further include:

step S1304: monitoring the slave battery electric quantity of a charge-discharge slave device connected with the charge-discharge master device in parallel in the solar power supply system;

step S1305: determining the discharging priority or charging priority of the charging and discharging main equipment and the charging and discharging auxiliary equipment according to the auxiliary battery electric quantity and the main battery electric quantity;

Step S1306: determining the order of power supply to the load according to the discharge priority; or determining the order of charging the main battery and the rechargeable battery according to the charging priority.

In the step S1305, when determining the discharging priorities of the charging/discharging slave device and the charging/discharging master device according to the slave battery power and the master battery power, the specific implementation process of the discharging mode may include:

step S1305-11: determining that the slave battery and the master battery are in a discharging mode according to the electric quantity of the slave battery and the electric quantity of the master battery and/or according to the voltage of a connecting cable;

step S1305-12: and according to the discharging mode, adjusting the discharging priority of the charging and discharging slave equipment to be larger than the discharging priority of the charging and discharging master equipment. The specific adjustment method may be that according to the electric quantity of the main battery, the output voltage of the main battery is adjusted to be smaller than the output voltage of the slave battery by a main input/output adjustment circuit of the charging and discharging main device; and determining that the discharging priority of the secondary battery is greater than that of the main battery according to the output voltage of the secondary battery and the adjusted output voltage of the main battery. Therefore, the secondary battery in the charging and discharging secondary equipment can be discharged preferentially in a discharging state, and the main battery in the charging and discharging main equipment can be kept high in electric quantity.

In addition, the battery with the highest electric quantity can be determined according to the electric quantity of the main battery and the auxiliary battery in the charging and discharging main equipment and the charging and discharging auxiliary equipment, and then the battery with the highest electric quantity can be discharged preferentially, namely, power is supplied to a load; therefore, under the scene that a plurality of charge-discharge slave devices connected with the charge-discharge master device in parallel exist, the balance of discharge is ensured.

In the step S1305, when determining the charging priority of the charging/discharging slave device and the charging/discharging master device according to the slave battery power and the master battery power, the specific implementation process of the charging mode may include:

step S1305-21: determining that the slave battery and the master battery are in a charging mode according to the electric quantity of the slave battery and the electric quantity of the master battery and/or according to the voltage of a connecting cable;

step S1305-22: and according to the charging mode, adjusting the charging priority of the charging and discharging main equipment to be larger than the charging priority of the charging and discharging auxiliary equipment. The specific steps can be as follows: according to the electric quantity of the secondary battery, the charging threshold voltage of the secondary battery is adjusted to be larger than the charging threshold voltage of the main battery through a secondary input/output adjusting circuit of the charging and discharging secondary device; and determining that the charging priority of the main battery is greater than the charging priority of the secondary battery according to the charging threshold voltage of the main battery and the adjusted charging threshold voltage of the secondary battery, thereby ensuring that the charging and discharging main equipment can obtain electric quantity preferentially.

In addition, in the charging mode, the lowest electric quantity can be determined according to the electric quantity of the charging and discharging main equipment and the charging and discharging auxiliary equipment under the condition that the power of the solar panel is insufficient, so that the equipment with the lowest electric quantity is charged preferentially; therefore, in the scene that a plurality of charge-discharge slave devices connected with the charge-discharge master device in parallel exist, the charge balance is ensured.

It will be appreciated that for the determination of the discharge mode and the charge mode, the charge of the battery and/or the voltage of the connection cable, which may be the bus voltage in the solar power supply system, may be used, such as: when the voltage of the solar panel is larger than the bus voltage, the solar panel is in a charging mode; and when the voltage of the solar panel is smaller than the bus voltage, the solar panel is in a discharge mode. The determination of the discharging module and the charging mode may be determined only by the charge of the battery, or may be determined only by the bus voltage, or may be determined by combining the charge of the battery and the bus voltage, and the determination manner is not limited to the above.

When the solar power supply system comprises a plurality of parallel charging and discharging devices, namely: the number of the charging and discharging main devices and the number of the charging and discharging slave devices are not limited, and the charging and discharging main devices and the charging and discharging slave devices can be set according to electricity requirements. In this embodiment, a plurality of charge-discharge slave devices and a charge-discharge master device are connected in parallel, so that the charge-discharge slave devices and the charge-discharge master device can be naturally and uniformly discharged, that is, the device with high electric power has high discharge priority. In addition, in order to ensure that the charging and discharging main equipment can maintain higher electric quantity, the output voltage of the charging and discharging main equipment can be reduced or the output voltage of the charging and discharging auxiliary equipment is higher, so that the charging and discharging auxiliary equipment discharges firstly. Can be understood in conjunction with the following examples.

Example of discharge process:

Vo＝V1+V2×SOC+V3

wherein Vo is the output voltage; v1, setting the lowest voltage (basic voltage) of the output; v2: setting a voltage interval which changes according to the capacity change; SOC: current percent of charge (0% -100%); v3: the voltage weight of the charge-discharge slave device is added if the charge-discharge slave device is a charge-discharge slave device, and is 0 if the charge-discharge slave device is a charge-discharge master device. Assume that: v1=12v, v2=1v, v3=0.3v; when the electric quantity of the main battery and the secondary battery is very low, the output voltage of the charging and discharging secondary device is 12.3V, and the output voltage of the charging and discharging main device is 12V. Because the output voltage of the charging and discharging slave device is higher than the output voltage of the charging and discharging master device, the electric quantity of the charging and discharging slave device can be used preferentially, and then 30% of the electric quantity of the charging and discharging master device is reserved. When the electric quantity of the main battery and the auxiliary battery is full, the output voltage of the charging and discharging main device is 13V, and the output voltage of the charging and discharging auxiliary device is 13.3V.

Example charging procedure:

if the power of the solar panel is insufficient to fully charge the charge-discharge master device and the charge-discharge slave device, the low-power product can be powered preferentially. In this embodiment, to ensure that the charging and discharging master device charges preferentially, the charging threshold range of the charging and discharging slave device may be increased.

Vt＝V4+V5×SOC+V6；

Wherein Vt is the threshold value of the charging input; v4: allowing an external minimum voltage for the set charging; v5: a voltage section which is set and changes according to the capacity change; SOC: current percent of charge (0% -100%); v6: in order to weight the charge/discharge slave device, V6 is added if the charge/discharge slave device is the charge/discharge slave device, and V6 is 0 if the charge/discharge master device is the charge/discharge master device. Let v4=14v, v5=1v, v6=0.3V; when the electric quantity of the main battery and the secondary battery is very low, the charging threshold voltage of the charging and discharging secondary device is 14.3V, and the charging threshold voltage of the charging and discharging main device is 14V. Since the charge threshold voltage of the charge-discharge master device is lower than the charge threshold voltage of the charge-discharge slave device, the master battery of the charge-discharge master device is charged first.

Also, under low cost applications, the battery voltage detection method may be used instead of the charge accumulation method to convert the voltage into a near-sighted percentage of charge to set the lowest charge threshold voltage according to the above principles.

In addition, the present embodiment may further include:

Determining whether the secondary battery meets a discharging requirement or a charging requirement according to the electric quantity of the secondary battery and/or according to the voltage of the connecting cable;

when the secondary battery meets the discharge requirement and the main battery meets the discharge requirement, determining the discharge priority of the charge-discharge secondary equipment and the charge-discharge main equipment;

and determining the order of power supply to the load according to the discharge priority.

Further may include:

when the secondary battery meets the charging requirement and the main battery also meets the charging requirement, determining the charging priority of the charging and discharging main equipment and the charging and discharging secondary equipment;

and determining the sequence of charging according to the charging priority.

Further may include:

and when the electric quantity of the main battery is smaller than that of the auxiliary battery, the solar equipment in the solar power supply system charges the main battery.

Further may include:

when the secondary battery meets the discharging requirement and the main battery meets the charging requirement, determining the output voltage of the secondary battery;

and supplying power to the load according to the output voltage of the secondary battery.

Further may include:

When the secondary battery meets the charging requirement and the primary battery meets the discharging requirement, determining the charging threshold voltage of the secondary battery;

and according to the charging threshold voltage, solar equipment in the solar power supply system charges the secondary battery.

It can be understood that the charging and discharging method of the solar power supply system provided by the application can realize charging or discharging according to the electric quantity condition, and can also realize charging or discharging according to the set threshold value. For the discharging mode and the charging mode, the adjustment of the charging threshold voltage and the discharging voltage can be realized based on the charging threshold voltage processing submodule, the discharging variable voltage processing submodule and the input/output adjusting circuit in the charging and discharging control management module respectively.

It should be noted that, the charge threshold voltage processing sub-module and the discharge variable voltage processing sub-module in the charge and discharge control management module may perform corresponding logic processing according to a set program by a device having processing capability and computing capability.

In the embodiment of the charge-discharge method of the solar power supply system provided by the application, the input and/or output voltage, namely the charge threshold voltage and/or the discharge voltage, can be obtained by adjusting the input/output adjusting circuit, so that on one hand: the number and types of the main battery and the auxiliary battery are more flexible, and a single section can be adopted, multiple sections can be adopted, different types can be adopted, the same type can be adopted, and the main battery and the auxiliary battery can be connected in parallel or in series. The battery in any mode can be uniformly in a specified voltage range through the adjustment of the input/output adjusting circuit, so that different types of loads can be compatible, the internal design of the charging and discharging equipment is flexible and changeable, the connection is concise, the power supply is ensured, and meanwhile, the generation, installation and maintenance costs are reduced. On the other hand, according to the embodiment of the method, the charging state or the discharging state can be balanced under the scene that a plurality of devices are connected in parallel, and the charging and discharging main device can be charged preferentially, and the charging and discharging auxiliary device can be discharged preferentially in order to ensure the importance of the charging and discharging main device.

Based on the foregoing, the present application further provides a storage medium for storing a program; the program performs a charge and discharge method of the solar power supply system as described above.

Based on the above, the present application further provides an electronic device, including: a processor; and the memory is used for storing a computer program, and the processor is used for executing the charge and discharge method of the solar power supply system.

While the preferred embodiment has been described, it is not intended to limit the invention thereto, and any person skilled in the art may make variations and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be defined by the claims of the present application.

Claims

1. A solar power supply system, comprising: the system comprises a first solar device, a charging and discharging main device and a load;

The charge-discharge main device includes: a main charge-discharge control management module and a main battery module; the main charge-discharge control management module is used for controlling the electric energy provided by the first solar equipment to charge the main battery module through the first connecting cable; and controlling the main battery module to output electric quantity to the load through the second connecting cable.

2. The solar power supply system according to claim 1, wherein the main charge-discharge control management module includes: a main input/output adjustment circuit, a main charge threshold voltage processing sub-module and a main discharge variable voltage processing sub-module; the main discharging variable voltage processing sub-module is used for monitoring the electric quantity of the main battery module and controlling the main input/output adjusting circuit to output target voltage to the load according to the electric quantity; the main charging threshold voltage processing sub-module is used for monitoring the electric quantity of the main battery module and controlling the input threshold voltage of the main battery module through the main input/output adjusting circuit according to the electric quantity.

3. The solar power supply system of claim 1, further comprising: the first voltage adapter is connected between the first solar equipment and the charging and discharging main equipment; one end of the first connecting cable is connected with the first voltage adapter, and the other end of the first connecting cable is connected with the main charge and discharge control management module.

4. The solar power supply system according to claim 1, wherein the main battery module comprises at least two main battery modules connected in parallel and/or in series.

5. The solar power supply system of claim 4, wherein the primary battery modules comprise a first type of primary battery module and a second type of primary battery module.

6. The solar power supply system of claim 1, further comprising: the charging and discharging slave equipment and the charging and discharging master equipment are connected in parallel and connected with the second connecting cable; or the charging and discharging slave device is connected with an interface of the second connecting cable arranged in the charging and discharging master device through a third connecting cable; the charge-discharge slave apparatus includes: a slave charge and discharge control management module and a slave battery module; the secondary charging and discharging control management module is used for controlling the electric quantity of the secondary battery module to be output to the load through the second connecting cable; and controlling the electric power provided by the first solar device to charge the slave battery module through the first connection cable and the second connection cable.

7. The solar power supply system according to claim 6, wherein the slave charge-discharge control management module includes: a slave input/output adjustment circuit, a slave charge threshold voltage processing sub-module, and a slave discharge variable voltage processing sub-module; the secondary discharge variable voltage processing sub-module is used for monitoring the electric quantity of the secondary battery module and controlling the secondary input/output adjusting circuit to output target voltage to the load according to the electric quantity; the secondary charging threshold voltage processing sub-module is used for monitoring the electric quantity of the secondary battery module and controlling the input threshold voltage of the secondary battery module through the secondary input/output adjusting circuit according to the electric quantity.

8. The solar power system of claim 6, further comprising: a second solar device; the second solar device is connected with the charging and discharging slave device through a fourth connecting cable, and the fourth connecting cable is connected with the second connecting cable.

9. The solar power system of claim 8, further comprising: the second voltage adapter is connected between the second solar equipment and the charging and discharging slave equipment; one end of the fourth connecting cable is connected with the second voltage adapter, and the other end of the fourth connecting cable is connected with the slave charge and discharge control management module.

10. The solar power supply system according to claim 6, wherein the slave battery modules comprise at least two slave battery modules connected in parallel and/or in series.

11. The solar power supply system of claim 10, wherein the slave battery modules comprise a first type of slave battery module and a second type of slave battery module.

12. A charging and discharging apparatus, characterized by comprising: a charge-discharge control management module and a battery module; the charge-discharge control management module comprises a charge threshold voltage processing sub-module, a discharge variable voltage processing sub-module and an input/output adjusting circuit;

13. The charge and discharge apparatus according to claim 12, wherein the input/output adjustment circuit is connected to the charge threshold voltage processing sub-module, the discharge variable voltage processing sub-module, and the battery module, respectively; the battery module is respectively connected with the charging threshold voltage processing submodule and the discharging variable voltage processing submodule; or, the input adjusting circuit is arranged in the charging control management module and is connected with the charging threshold voltage processing sub-module and the battery module, and the output adjusting circuit is arranged in the discharging control management module and is connected with the discharging variable voltage processing sub-module and the battery module.

14. The charge and discharge device of claim 12, wherein the battery modules comprise at least two battery modules connected in parallel and/or at least two battery modules connected in series.

15. The charge and discharge device of claim 14, wherein the at least two parallel and/or at least two series-connected battery modules comprise: a first type battery module and a second type battery module.