CN219576654U - Micro-grid circuit system sharing battery and energy storage equipment - Google Patents

Abstract

The embodiment of the utility model discloses a micro-grid circuit system and energy storage equipment sharing a battery, wherein the circuit system comprises: the power supply comprises a power supply module, a control circuit and a conversion circuit, wherein a first port of the control circuit is connected with an alternating current bus, the alternating current bus is connected with an external alternating current power supply and an alternating current load, a second port of the control circuit is connected with a positive electrode of the power supply module, the control circuit is connected with a positive electrode of the alternating current load through the alternating current bus, and a negative electrode of the alternating current load is connected with a negative electrode of the power supply module; the third port and the fourth port of the conversion circuit are connected with an alternating current bus, the fifth port of the conversion circuit is connected with the positive electrode of the power module, the sixth port of the conversion circuit is connected with a direct current bus, the direct current bus is connected with the positive electrode of a direct current load, and the negative electrode of the direct current load is connected with the negative electrode of the power module. According to the utility model, a plurality of battery subsystems are reduced into a single battery subsystem, so that the topology of the micro-grid system is optimized, the battery occupation and the resource occupation ratio are reduced, and the project cost is saved.

Description

Micro-grid circuit system sharing battery and energy storage equipment

Technical Field

The utility model relates to the field of direct current systems and energy storage systems, in particular to a micro-grid circuit system sharing a battery and energy storage equipment.

Background

At present, in the field of battery energy storage, a lithium ion battery becomes a very important novel energy storage medium due to the characteristics of high energy density, long cycle life and the like, and is widely applied to large-scale energy storage scenes such as renewable energy power generation and energy storage matching of wind power, photovoltaic and the like, power grid peak regulation and frequency modulation, industrial and commercial peak Gu Taoli and the like.

The micro-grid system for generating power, storing energy and unifying direct current by new energy is gradually introduced in the current market. The energy storage subsystem and the direct current subsystem in the mainstream integrated micro-grid system are two sets of relatively independent systems, the volume of the two sets of systems is large, the limit of working sites is large, and therefore the investment is large, and the system operation efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the micro-grid circuit system and the energy storage equipment which share the battery, wherein the circuit system can optimize the topology of the micro-grid system, reduce the occupation area of the battery and the occupation ratio of resources, and further achieve the effects of saving the cost and improving the working efficiency of the system.

In a first aspect, the present utility model provides a micro-grid circuitry for sharing a battery, the circuitry comprising: a power module, a control circuit, and a conversion circuit;

the control circuit is connected with the positive electrode of the alternating current load through the alternating current bus, and the negative electrode of the alternating current load is connected with the negative electrode of the power supply module; the third port and the fourth port of the conversion circuit are connected with the alternating current bus, the fifth port of the conversion circuit is connected with the positive electrode of the power module, the sixth port of the conversion circuit is connected with the direct current bus, the direct current bus is connected with the positive electrode of the direct current load, and the negative electrode of the direct current load is connected with the negative electrode of the power module.

The control circuit is used for controlling a charging process and a discharging process of the power supply module, when the power supply module is in a charging state, the control circuit receives a first alternating current signal from an external alternating current power supply through the first port, performs alternating current-to-direct current processing on the first alternating current signal to obtain a first direct current signal, and sends the first direct current signal to the power supply module through the second port to realize a first charging process for the power supply module; the method comprises the steps of,

the conversion circuit is configured to receive a second ac electrical signal from an external ac power supply through the third port, receive a third ac electrical signal from the external ac power supply through the fourth port, perform a combining process on the second ac electrical signal and the third ac electrical signal to obtain a fourth ac electrical signal, perform an ac-to-dc process on the fourth ac electrical signal to obtain a second dc electrical signal, and send the second dc electrical signal to the power module through the fifth port to implement a second charging process for the power module;

when the power supply module is in a discharging state, the control circuit is used for receiving a third direct current electric signal from the power supply module through the second port, carrying out direct current-to-direct current processing on the third direct current electric signal to obtain a fifth alternating current electric signal, and sending the fifth alternating current electric signal to the alternating current load connected to the alternating current bus through the first port so as to realize a first discharging process of the power supply module;

the conversion circuit is configured to receive a fourth dc electrical signal from the power module through the fifth port, convert the fourth dc electrical signal to obtain a fifth dc electrical signal, and send the fifth dc electrical signal to the dc load connected to the dc bus through the sixth port, so as to implement a second discharging process of the power module.

In one possible embodiment, the power module includes a plurality of battery clusters, and the power module includes a BMS battery management system unit for monitoring an operation state of the power module, including a charge state and a discharge state, and transmitting the monitoring result to the control circuit.

In one possible embodiment, the BMS battery management system unit includes a BMS battery management system, a control module, an acquisition module, a display module, and a wireless communication module; the BMS battery management system is connected with the wireless communication module and the display module respectively through communication interfaces, the output end of the acquisition module is connected with the input end of the BMS battery management system, the output end of the BMS battery management system is connected with the input end of the control module, the control module is connected with the power module, the BMS battery management system is connected with the Server end through the wireless communication module, and the Server is a background Server.

In one possible embodiment, the control circuit includes a PCS converter electrically connected to the BMS battery management system via an internal CAN interface.

In one possible embodiment, the PCS converter includes a control unit configured to receive a control instruction and send the control instruction to the PCS converter.

In one possible embodiment, the PCS converter includes a DC/AC bi-directional converter for rectifying an input alternating current into a direct current for output and converting the input direct current into an alternating current for output.

In one possible embodiment, when the ac bus is in a normal state, the normal state refers to a state that the ac bus is powered on, and a power storage instruction is sent to the PCS converter by the control unit in a first preset period of time, where the power storage instruction is used to instruct the PCS converter to control the power module to enter the charging state; and in a second preset period, the control unit sends a discharge instruction to the PCS converter, wherein the discharge instruction is used for indicating the PCS converter to control the power supply module to enter the discharge state.

In one possible embodiment, when the ac bus is in an abnormal state, the abnormal state refers to a state that the ac bus is not energized, the control unit sends a discharge command to the PCS converter, and the power module supplies power to the PCS converter and the conversion circuit.

In one possible embodiment, the conversion circuit includes an AC-DC conversion module, a DC conversion module, and an ATS switch unit, where the AC-DC conversion module is an AC/DC converter and the DC conversion module is a DC/DC converter

An AC end of the AC/DC converter is connected to the AC bus through the ATS switch unit, a DC end of the AC/DC converter is connected to the DC bus through the sixth port, and is connected to the DC/DC converter, the AC/DC converter is configured to rectify the fourth AC electrical signal input into the fifth DC electrical signal adapted to the DC bus voltage;

the DC/DC converter is connected with the power supply module through the fifth port and is used for converting the input fifth direct current electric signal into the second direct current electric signal which is adaptive to the voltage range of the power supply module and converting the input fourth direct current electric signal into the fifth direct current electric signal which is adaptive to the direct current bus voltage;

the ATS switch unit is connected with the alternating current bus, and is used for carrying out combining processing on the second alternating current signal received at the third port and the third alternating current signal received at the fourth port to obtain the fourth alternating current signal.

In a second aspect, the present utility model provides an energy storage device, including the micro-grid circuitry of the shared battery disclosed in the first aspect of the embodiment of the present utility model.

It can be seen that the two sets of switching circuits and the control circuit with the system being mutually in standby power supply are arranged through the battery set in the circuit system, so that the running stability of the micro-grid system is improved, the load failure probability is reduced, when one path of energy storage or high-voltage direct current fails, the other path of energy storage or high-voltage direct current can be independently supplied, the efficiency of the micro-grid system is improved, a plurality of battery subsystems are reduced to be single battery subsystems, the topology of the micro-grid system is optimized, the occupied area of the battery and the occupied area of the resource are reduced, and the project cost is saved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a micro-grid circuit system for sharing a battery according to an embodiment of the present utility model;

FIG. 2a is a schematic diagram of circuitry for a state of charge provided by an embodiment of the present utility model;

FIG. 2b is a schematic diagram of circuitry for a discharge state provided by an embodiment of the present utility model;

fig. 3 is a schematic circuit diagram of a micro-grid circuit system sharing a battery according to an embodiment of the present utility model;

fig. 4 is a block diagram of a BMS battery management system unit according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent, and the embodiments described in detail, but not necessarily all, in connection with the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by "upper" or the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience and simplicity of description, and is not meant to indicate or imply that the apparatus or element to be referred to must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be either fixedly connected or detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

In the following, portions of the present utility model are described for ease of understanding by those skilled in the art.

Micro-grid (micro-grid), which refers to a small power generation and distribution system formed by collecting distributed power sources, energy storage devices, energy conversion devices, related loads and monitoring and protecting devices, is an autonomous system capable of realizing self-control, protection and management, and can be operated in a grid-connected mode with an external power grid or in an isolated mode. Is an important component of the smart grid.

The PCS (Power Conversion System, energy storage converter) can control the charging and discharging processes of the storage battery to perform AC/DC conversion, and can directly supply power to the AC load under the condition of no power grid. The PCS controller acquires the state information of the battery pack, can realize the protective charge and discharge of the battery, and ensures the operation safety of the battery.

BMS (Battery Management System ), BMS battery system commonly called battery nurse or battery manager, mainly is in order to intelligent management and maintenance each battery unit, prevents that the battery from appearing overcharging and overdischarging, prolongs the life of battery, monitors the state of battery.

Embodiments of the present utility model are described below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a micro-grid circuit system for a shared battery according to an embodiment of the present utility model, as shown in fig. 1, the grid system includes: the power module 100, the control circuit 110 and the conversion circuit 120, wherein the power module 100 is electrically connected with the control circuit 110 and the conversion circuit 120 respectively.

Wherein the power module 100 is configured to supply power to or charge power from the micro-grid circuitry, and is composed of one or more battery clusters; the control circuit 110 is used for controlling the charging process and the discharging process of the power supply module; the conversion circuit 120 is configured to perform conversion processing on an input electrical signal.

The working state of the micro-grid circuit system is determined by the control circuit 110, including charging and discharging, referring to fig. 2a and fig. 2b, fig. 2a is a schematic diagram of the circuit system in the charging state provided by the embodiment of the present utility model, and when the power module 100 is in the charging state, the control circuit 110 and the conversion circuit 120 simultaneously receive the electrical signals from the control circuit 110 and the conversion circuit 120, and the control circuit 110 and the conversion circuit 120 convert the ac electrical signals input from the ac bus into dc electrical signals and input the dc electrical signals to the power module 100; fig. 2b is a schematic diagram of a circuit system in a discharging state according to an embodiment of the present utility model, as shown in fig. 2b, when the power module 100 is in the discharging state, a dc electrical signal is sent to the control circuit 110 and the conversion circuit 120, the control circuit 110 converts the received dc electrical signal and outputs an ac electrical signal to an ac load connected to the ac bus, and the conversion circuit 120 rectifies the received dc electrical signal and outputs the rectified dc electrical signal to a dc load connected to the dc bus.

Referring to fig. 3, fig. 3 is a schematic circuit diagram of a micro-grid circuit system with a shared battery according to an embodiment of the present utility model, as shown in fig. 3, a first port 10 of the control circuit 210 is connected to an ac bus 260, the ac bus 260 is connected to an external ac power source and an ac load, a second port 20 of the control circuit 210 is connected to an anode of the power module 200, the control circuit 210 is connected to an anode of the ac load through the ac bus 260, and a cathode of the ac load is connected to a cathode of the power module 200;

the third port 30 and the fourth port 40 of the conversion circuit 220 are connected to the ac bus 260, the fifth port 50 of the conversion circuit 220 is connected to the positive electrode of the power module 200, the sixth port 60 of the conversion circuit 220 is connected to the dc bus 270, the dc bus 270 is connected to the positive electrode of a dc load, and the negative electrode of the dc load is connected to the negative electrode of the power module 200;

the control circuit 210 is configured to control a charging process and a discharging process of the power module 200, when the power module is in a charging state, the control circuit 210 receives a first ac signal from an external ac power source through the first port 10, performs ac-to-dc processing on the first ac signal to obtain a first dc signal, and sends the first dc signal to the power module through the second port 20 to implement a first charging process for the power module; the method comprises the steps of,

the conversion circuit 220 is configured to receive a second ac electrical signal from an external ac power source through the third port 30, receive a third ac electrical signal from the external ac power source through the fourth port 40, perform a combining process on the second ac electrical signal and the third ac electrical signal to obtain a fourth ac electrical signal, perform an ac-to-dc process on the fourth ac electrical signal to obtain a second dc electrical signal, and send the second dc electrical signal to the power module 200 through the fifth port 50 to implement a second charging process for the power module;

when the power module 200 is in a discharging state, the control circuit 210 is configured to receive a third dc electrical signal from the power module through the second port 20, perform dc-to-ac processing on the third dc electrical signal to obtain a fifth ac electrical signal, and send the fifth ac electrical signal to the ac load connected to the ac bus 260 through the first port 10, so as to implement a first discharging process of the power module;

the conversion circuit 220 is configured to receive a fourth dc electrical signal from the power module 200 through the fifth port 50, convert the fourth dc electrical signal to obtain a fifth dc electrical signal, and send the fifth dc electrical signal to the dc load connected to the dc bus 270 through the sixth port 60, so as to implement a second discharging process of the power module.

The conversion circuit 220 shown in fig. 3 includes a DC conversion module 230, an AC-DC conversion module 240, and an ATS switch unit 250, where the DC conversion module 230 may be a DC/DC converter, the AC-DC conversion module 240 may be an AC/DC converter, one port of the DC conversion module 230 is connected to the power module 200, one port of the DC conversion module 230 is connected to the DC bus 270 and the AC-DC conversion module 240, the other port of the AC-DC conversion module 240 is connected to the ATS switch unit 250, and the other two ports of the ATS switch unit are both connected to the AC bus 260.

Therefore, by introducing the circuit, two sets of sub-circuits supply power from two paths, and the two sets of sub-systems supply power mutually, when one path fails, the other path supplies power, so that the running stability of the micro-grid system is improved, the load failure probability is reduced, and the work efficiency of the micro-grid is improved.

In one possible example, the power module includes a plurality of battery clusters, and the power module includes a BMS battery management system unit for monitoring an operation state of the power module, including a charge state, and a discharge state, and transmitting the monitoring result to the control circuit.

In one possible example, the BMS battery management system unit includes a BMS battery management system, a control module, a display module, a wireless communication module, an electrical device, a power module, and a harvesting module;

referring to fig. 4, fig. 4 is a block diagram of a BMS battery management system unit according to an embodiment of the present utility model, as shown in fig. 4, the BMS battery management system 410 is connected to the wireless communication module 430 and the display module 420 respectively through communication interfaces, an output end of the collection module 480 is connected to an input end of the BMS battery management system 410, an output end of the BMS battery management system 410 is connected to an input end of the control module 440, the control module 440 is connected to the power module 460 and the electrical device 450 respectively, the BMS battery management system 410 is connected to a Server 470 through the wireless communication module 430, and the Server 470 is a background Server.

The wireless communication module is used for the BMS battery management system to be in communication connection with the server, the display module is used for displaying the current state, the control condition and the like of the BMS battery management system through the electronic screen, and the control module is used for controlling the working state of the power supply module or the battery pack and the electrical equipment at the output end.

It can be seen that in this example, carry out real-time supervision through BMS battery management system unit to power module, send testing result to control circuit, through control circuit control power module work, maintained the inside each unit work safety of battery, prevent that the battery from appearing overcharging and overdischarging, the life of extension battery improves battery management intellectuality.

In one possible example, the control circuit includes a PCS converter electrically connected to the BMS battery management system via an internal CAN interface.

Therefore, the PCS converter is communicated with the BMS battery management system through the CAN interface, and the state information of the battery pack is acquired in real time, so that the battery CAN be charged and discharged in a protective manner, and the operation safety of the battery is ensured.

In one possible example, the PCS converter includes a control unit configured to receive a control instruction and send the control instruction to the PCS converter.

The PCS converter receives a control command from the internal control unit, controls the charging and discharging processes of the connected battery pack according to the control command, performs alternating current-direct current conversion, and can directly control the battery pack to supply power for an alternating current load under the condition that a micro-grid system is not provided with a power grid.

The control unit is in communication connection with the Server and receives a control instruction from the Server; the control instruction of the server can be controlled by an operation and maintenance personnel or can automatically send the instruction according to a preset program.

In one possible example, the PCS converter includes a DC/AC bi-directional converter for rectifying an input alternating current into a direct current for output and converting the input direct current into an alternating current for output.

The control circuit PCS is used for configuring the power level to cover the load power of the output side, and the PCS is used for converting an input alternating current signal into 600 Vdc-850 Vdc through a DC/AC bidirectional converter arranged inside and matching the voltage range of the power supply module.

In one possible example, when the ac bus is in a normal state, the normal state refers to a state that the ac bus is powered on, and a power storage instruction is sent to the PCS converter by the control unit in a first preset period, where the power storage instruction is used to instruct the PCS converter to control the power module to enter the charging state; and in a second preset period, the control unit sends a discharge instruction to the PCS converter, wherein the discharge instruction is used for indicating the PCS converter to control the power supply module to enter the discharge state.

The first preset time period can be a night time period or a specified low electricity price time period when the power grid works normally, and the electricity price is relatively low to store electricity so as to be beneficial to saving economic loss.

Therefore, the power supply module can be combined with the energy storage subsystem to be used for peak clipping and valley filling, and the power utilization time of various users is reasonably and orderly arranged and organized so as to reduce load peaks and fill load valleys. And the peak-valley difference of the power grid load is reduced, so that the power generation and the power utilization tend to be balanced.

In one possible example, when the ac bus is in an abnormal state, the abnormal state refers to a state in which the ac bus is not energized, the control unit sends a discharge instruction to the PCS converter, and the power module supplies power to the PCS converter and the conversion circuit.

When the external power grid is powered off or fails, the power supply module supplies power to the micro-grid circuit system under the control of the PCS converter.

Therefore, the power supply module switches the working mode to provide power for the micro-grid circuit system under the condition that the PCS converter detects that the system is powered down, so that the running stability of the micro-grid circuit system is improved, and the load failure probability is reduced.

In one possible example, the conversion circuit includes an AC-DC conversion module, a DC conversion module, and an ATS switch unit, where the AC-DC conversion module is an AC/DC converter, and the DC conversion module is a DC/DC converter; an AC end of the AC/DC converter is connected to the AC bus through the ATS switch unit, a DC end of the AC/DC converter is connected to the DC bus through the sixth port, and is connected to the DC/DC converter, the AC/DC converter is configured to rectify the fourth AC electrical signal input into the fifth DC electrical signal adapted to the DC bus voltage; the DC/DC converter is connected with the power supply module through the fifth port and is used for converting the input fifth direct current electric signal into the second direct current electric signal which is adaptive to the voltage range of the power supply module and converting the input fourth direct current electric signal into the fifth direct current electric signal which is adaptive to the direct current bus voltage; the ATS switch unit is connected with the alternating current bus, and is used for carrying out combining processing on the second alternating current signal received at the third port and the third alternating current signal received at the fourth port to obtain the fourth alternating current signal.

The power configured after AC/DC+DC/DC conversion in the conversion circuit can cover output side load power, and the input alternating current signal is rectified into 270Vdc through an AC/DC converter so as to match the voltage level of a direct current bus; and then the DC/DC module rectifies the power supply voltage into 600 Vdc-850 Vdc, and the voltage range of the power supply module is matched.

In one possible example, an embodiment of the present utility model provides an energy storage device including the micro-grid circuitry of the shared battery provided by any of the above embodiments of the present utility model.

The circuitry in the energy storage device is the same as the micro-grid circuitry of the shared battery described in any of the above embodiments of the present utility model, and will not be described here. It should be noted that, for simplicity of description, the foregoing embodiments of the utility model have been shown as a series of acts, but it should be understood by those skilled in the art that the present utility model is not limited by the order of acts, as some steps may be performed in other orders or concurrently in accordance with the utility model. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present utility model.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the several embodiments provided by the present utility model, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the description of the embodiments being merely intended to facilitate an understanding of the utility model and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims (10)

1. A micro-grid circuitry for sharing a battery, the circuitry comprising:

a power module, a control circuit, and a conversion circuit, wherein,

the first port of the control circuit is connected with an alternating current bus, the alternating current bus is connected with an external alternating current power supply and an alternating current load, the second port of the control circuit is connected with the positive electrode of the power supply module, the control circuit is connected with the positive electrode of the alternating current load through the alternating current bus, and the negative electrode of the alternating current load is connected with the negative electrode of the power supply module;

the third port and the fourth port of the conversion circuit are connected with the alternating current bus, the fifth port of the conversion circuit is connected with the positive electrode of the power module, the sixth port of the conversion circuit is connected with the direct current bus, the direct current bus is connected with the positive electrode of the direct current load, and the negative electrode of the direct current load is connected with the negative electrode of the power module;

the control circuit is used for controlling a charging process and a discharging process of the power supply module, when the power supply module is in a charging state, the control circuit receives a first alternating current signal from an external alternating current power supply through the first port, performs alternating current-to-direct current processing on the first alternating current signal to obtain a first direct current signal, and sends the first direct current signal to the power supply module through the second port to realize a first charging process for the power supply module; the method comprises the steps of,

the conversion circuit is configured to receive a second ac electrical signal from an external ac power supply through the third port, receive a third ac electrical signal from the external ac power supply through the fourth port, perform a combining process on the second ac electrical signal and the third ac electrical signal to obtain a fourth ac electrical signal, perform an ac-to-dc process on the fourth ac electrical signal to obtain a second dc electrical signal, and send the second dc electrical signal to the power module through the fifth port to implement a second charging process for the power module;

when the power supply module is in a discharging state, the control circuit is used for receiving a third direct current electric signal from the power supply module through the second port, carrying out direct current-to-direct current processing on the third direct current electric signal to obtain a fifth alternating current electric signal, and sending the fifth alternating current electric signal to the alternating current load connected to the alternating current bus through the first port so as to realize a first discharging process of the power supply module;

the conversion circuit is configured to receive a fourth dc electrical signal from the power module through the fifth port, convert the fourth dc electrical signal to obtain a fifth dc electrical signal, and send the fifth dc electrical signal to the dc load connected to the dc bus through the sixth port, so as to implement a second discharging process of the power module.

2. The circuit system of claim 1, wherein the power module comprises a plurality of battery clusters, the power module comprises a BMS battery management system unit for monitoring an operating state of the power module and transmitting a monitoring result to the control circuit, and the operating state comprises a charging state and a discharging state.

3. The circuitry of claim 2, wherein the BMS battery management system unit comprises a BMS battery management system, a control module, a display module, a wireless communication module, an electrical device, a power module, and an acquisition module;

the BMS battery management system is connected with the wireless communication module and the display module respectively through communication interfaces, the output end of the acquisition module is connected with the input end of the BMS battery management system, the output end of the BMS battery management system is connected with the input end of the control module, the control module is connected with the power module and the electrical equipment respectively, the BMS battery management system is connected with the Server end through the wireless communication module, and the Server is a background Server.

4. The circuitry of claim 3, wherein the control circuitry comprises a PCS converter electrically connected to the BMS battery management system via an internal CAN interface.

5. The circuitry of claim 4, in which the PCS converter comprises a control unit to receive control instructions and to send the control instructions to the PCS converter.

6. The circuitry of claim 4, in which the PCS converter comprises a DC/AC bi-directional converter for rectifying an input alternating current to a direct current for output and converting the input direct current to an alternating current for output.

7. The circuitry of claim 5, wherein when the ac bus is in a normal state, the normal state refers to a state in which the ac bus is energized, and a power storage instruction is sent by the control unit to the PCS converter for a first preset period of time, the power storage instruction being used to instruct the PCS converter to control the power module to enter the charging state;

and in a second preset period, the control unit sends a discharge instruction to the PCS converter, wherein the discharge instruction is used for indicating the PCS converter to control the power supply module to enter the discharge state.

8. The circuitry of claim 5, wherein when the ac bus is in an abnormal state, the abnormal state being a state in which the ac bus is not energized, the control unit sends a discharge command to the PCS converter, and the power module supplies power to the PCS converter and the conversion circuit.

9. The circuit system of claim 1, wherein the conversion circuit comprises an AC-to-DC conversion module, a DC conversion module, and an ATS switching unit, wherein the AC-to-DC conversion module is an AC/DC converter, and the DC conversion module is a DC/DC converter

An AC end of the AC/DC converter is connected to the AC bus through the ATS switch unit, a DC end of the AC/DC converter is connected to the DC bus through the sixth port, and is connected to the DC/DC converter, the AC/DC converter is configured to rectify the fourth AC electrical signal input into the fifth DC electrical signal adapted to the DC bus voltage;

the DC/DC converter is connected with the power supply module through the fifth port and is used for converting the input fifth direct current electric signal into the second direct current electric signal which is adaptive to the voltage range of the power supply module and converting the input fourth direct current electric signal into the fifth direct current electric signal which is adaptive to the direct current bus voltage;

the ATS switch unit is connected with the alternating current bus, and is used for carrying out combining processing on the second alternating current signal received at the third port and the third alternating current signal received at the fourth port to obtain the fourth alternating current signal.

10. An energy storage device comprising the shared battery micro-grid circuitry of any one of claims 1-9.