A kind of electric network terminal energy-storage systemTechnical field
The invention belongs to electrical equipment technical field, relate to a kind of electric network terminal energy-storage system.
Background technology
China Patent No. 201520185316.2 discloses a kind of intelligent grid terminal energy storage control system, comprise single-chip microcomputer, single-chip microcomputer connects communication module, display module, keyboard, LED light, clock circuit, memory, charge and discharge control module, grid-connected switch respectively, charge and discharge control module connects batteries, inverter and power module respectively, inverter connects grid-connected switch, and grid-connected switch connects load detecting module and external power grid respectively.Communication module is used for connecting outside electric energy management main frame.The invention has the beneficial effects as follows the electric power system of avoiding the peak hour providing single-chip microcomputer networking, structure is simple, and networking cost is low.
This intelligent grid terminal energy storage control system only has one group of storage battery, when storage battery breaks down, can not realize can in low electricity price time accumulate in high electricity price time discharge.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of electric network terminal energy-storage system of electric energy when can better utilize low electricity price.
In order to solve the problems of the technologies described above, the present invention includes external power grid, cutting-in control switch, load, inverter, charge and discharge control module and storage battery, external power grid connects cutting-in control switch, cutting-in control switch connects load and inverter, inverter connects charge and discharge control module, described storage battery has two groups at least, all storage battery are parallel in a diverter switch, diverter switch connects charge and discharge control module, diverter switch has the state being communicated with all storage battery and charge and discharge control module, diverter switch also has the state being communicated with any one storage battery and charge and discharge control module.
In order to have best cost performance, described storage battery has three groups.
Beneficial effect of the present invention: the present invention has and organizes storage battery more, when low electricity price, by being charged to all storage battery by external power grid, when to high electricity price, can open any one storage battery powering load.When wherein a storage battery electricity exhausts or when one of them storage battery breaks down, other storage battery still can also be utilized load supplying.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
A kind of electric network terminal energy-storage system as shown in Figure 1, comprise external power grid, cutting-in control switch, load, inverter, charge and discharge control module and storage battery, external power grid connects cutting-in control switch, cutting-in control switch connects load and inverter, inverter connects charge and discharge control module, it is characterized in that: described storage battery has two groups at least, all storage battery are parallel in a diverter switch, diverter switch connects charge and discharge control module, diverter switch has the state being communicated with all storage battery and charge and discharge control module, diverter switch also has the state being communicated with any one storage battery and charge and discharge control module.Described storage battery has three groups.