CN115189437A

CN115189437A - Control method of power supply system and battery management system

Info

Publication number: CN115189437A
Application number: CN202210795443.9A
Authority: CN
Inventors: 李晓斌; 李代程
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-10-14
Anticipated expiration: 2042-07-07
Also published as: CN115189437B

Abstract

The disclosure provides a control method of a power supply system and a battery management system, relates to the technical field of computers, and particularly relates to the fields of data processing, battery energy storage and the like. The specific implementation scheme is as follows: the method comprises the steps of obtaining the energy storage discharge state, the current time and the full charge state of a battery, obtaining the preset discharge time interval and the preset charge time interval, and adjusting the output voltage of a direct current bus according to the energy storage discharge state, the current time, the full charge state, the discharge time interval and the charge time interval so as to control the charge and discharge state of a power supply system, wherein the charge and discharge state of the power supply system comprises the battery charge state, the battery energy storage discharge state and the normal discharge state. According to the method, the output voltage of the direct current bus is adjusted according to the acquired energy storage discharge state, the current time, the full-charge state, the discharge time period and the charge time period, the control on the charge-discharge state of the power supply system is realized, the control method is simple and reliable, the difficulty in landing or transformation is reduced, the function of integrating energy storage and standby power is realized, and the economic benefit is improved.

Description

Control method of power supply system and battery management system

Technical Field

The present disclosure relates to the field of data processing, battery energy storage, and the like in the field of computer technologies, and in particular, to a control method for a power supply system and a battery management system.

Background

At present, a part of data centers adopt a centralized energy storage scheme to configure a UPS (alternating current uninterruptible power supply)/HVDC (direct current uninterruptible power supply) + a battery as a backup power supply, but the backup power is mainly used.

However, the centralized energy storage scheme and the control method are complex and unreliable, the energy storage and the standby power are difficult to fall to the ground or be transformed in a project, the energy storage and standby power integrated function cannot be realized, and the economic benefit is low.

Disclosure of Invention

The disclosure provides a control method of a power supply system and a battery management system.

According to a first aspect, there is provided a control method of a power supply system, comprising: acquiring an energy storage and discharge state, current time and full charge state of a battery; acquiring a preset discharging time period and a preset charging time period; and adjusting the output voltage of the direct current bus according to the energy storage discharge state, the current time, the full charge state, the discharge time interval and the charge time interval so as to realize the control of the charge and discharge state of the power supply system, wherein the charge and discharge state of the power supply system comprises a battery charge state, a battery energy storage discharge state and a normal discharge state.

According to a second aspect, there is provided a battery management system comprising: the first end of the current sensor is connected with the positive electrode of the battery; the anode of the diode is connected with the second end of the current sensor, and the cathode of the diode is connected with the first end of the first switch in the circuit breaker; a contactor connected in parallel with the diode; the circuit breaker comprises the first switch and a second switch which are linked, wherein the second end of the first switch is connected with the positive electrode of the direct current bus, the first end of the second switch is connected with the negative electrode of the battery, and the second end of the second switch is connected with the negative electrode of the direct current bus; the battery management module is respectively connected with the current sensor, the contactor, the circuit breaker, the battery and the uninterruptible power supply; the battery management module is used for acquiring the discharge current collected by the current sensor and the capacity of the battery, generating the energy storage discharge state and the full charge state of the battery according to the capacity of the battery, controlling the contactor and the breaker to act according to the discharge current and the capacity of the battery and the full charge state, and sending the energy storage discharge state and the full charge state to the uninterruptible power supply to supply the uninterruptible power supply to control the charge and discharge state of the power supply system according to the energy storage discharge state and the full charge state by adjusting the output voltage of the direct current bus, wherein the charge and discharge state of the power supply system comprises a battery charge state, a battery energy storage discharge state and a normal discharge state.

According to a third aspect, there is provided a control method of a power supply system, comprising: acquiring a discharge current acquired by a current sensor; acquiring the capacity of a battery; generating a full-charge state of the battery according to the capacity of the battery; and controlling the action of a contactor according to the discharge current and the full-charge state so as to realize the control of the charge-discharge state of the battery, wherein the charge-discharge state of the battery comprises a battery charge state, a battery discharge state and a battery standby state.

According to a fourth aspect, there is provided a control device of a power supply system, comprising: the device comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring the energy storage and discharge state, the current time and the full charge state of a battery; the second acquisition module is used for acquiring a preset discharging time period and a preset charging time period; and the adjusting module is used for adjusting the output voltage of the direct current bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period and the charge time period so as to realize the control of the charge and discharge state of the power supply system, and the charge and discharge state of the power supply system comprises a battery charge state, a battery energy storage discharge state and a normal discharge state.

According to a fifth aspect, there is provided a control device of a power supply system including the battery management system according to the second aspect of the present disclosure, the control device including: the third acquisition module is used for acquiring the discharge current acquired by the current sensor; the fourth acquisition module is used for acquiring the capacity of the battery; the generating module is used for generating a full-charge state of the battery according to the capacity of the battery; and the control module is used for controlling the action of the contactor according to the discharging current and the full charging state so as to realize the control of the charging and discharging state of the battery, wherein the charging and discharging state of the battery comprises a battery charging state, a battery discharging state and a battery standby state.

According to a sixth aspect, there is provided an electronic device comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of controlling a power supply system according to the first aspect of the present disclosure or the method of controlling a power supply system according to the third aspect of the present disclosure.

According to a seventh aspect, there is provided a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the method of controlling a power supply system according to the first aspect of the present disclosure or the method of controlling a power supply system according to the third aspect of the present disclosure.

According to an eighth aspect, there is provided a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method of controlling a power supply system according to the first aspect of the disclosure or the steps of the method of controlling a power supply system according to the third aspect of the disclosure.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a schematic flow chart of a control method of a power supply system according to a first embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a time interval law of peak-to-valley difference in a certain region;

fig. 3 is a flowchart illustrating a control method of a power supply system according to a second embodiment of the present disclosure;

fig. 4 is a flowchart illustrating a control method of a power supply system according to a third embodiment of the present disclosure;

FIG. 5 is a schematic diagram of controlling a charging and discharging state of a power supply system;

fig. 6 is a block diagram of a battery management system according to a first embodiment of the present disclosure;

fig. 7 is a flow chart diagram of a control method of a power supply system according to a fourth embodiment of the present disclosure;

FIG. 8 is a schematic diagram of the control contactor action;

fig. 9 is a block diagram of a control device of a power supply system according to a first embodiment of the present disclosure;

fig. 10 is a block diagram of a control device of a power supply system according to a second embodiment of the present disclosure;

fig. 11 is a block diagram of a control device of a power supply system according to a third embodiment of the present disclosure;

fig. 12 is a block diagram of an electronic device to implement a control method of a power supply system of an embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Computer Technology (CT) refers to the technical methods and technical means used in the Computer field, or refers to the hardware Technology, software Technology and application Technology thereof. The computer technology has obvious comprehensive characteristics, is closely combined with electronic engineering, applied physics, mechanical engineering, modern communication technology, mathematics and the like, and develops quickly.

Data Processing (DP) is the collection, storage, retrieval, processing, transformation, and transmission of Data. The basic purpose of data processing is to extract and derive valuable, meaningful data for certain people from large, possibly chaotic, unintelligible amounts of data. Data processing is a basic link of system engineering and automatic control. Data processing is throughout various fields of social production and social life. The development of data processing technology and the breadth and depth of its applications have greatly influenced the progress of human society development.

The battery energy storage refers to a series of related technologies that store electric energy by physical or chemical methods and release the electric energy when needed. The stored energy can be used as emergency energy, can also be used for storing energy when the load of the power grid is low, and can be used for outputting energy when the load of the power grid is high, so that the energy can be used for clipping peaks and filling valleys and reducing the fluctuation of the power grid.

A control method, an apparatus, a system, a terminal, an electronic device, and a medium of a power supply system according to an embodiment of the present disclosure are described below with reference to the drawings.

Fig. 1 is a flowchart illustrating a control method of a power supply system according to a first embodiment of the present disclosure.

An execution main body of the control method of the power supply system in the embodiment of the present disclosure may specifically be a UPS or a HVDC, and as shown in fig. 1, the control method of the power supply system in the embodiment of the present disclosure may specifically include the following steps:

and S101, acquiring the energy storage discharge state of the battery, the current time and the full charge state of the battery.

Optionally, an execution main body of the control method of the power supply system according to the embodiment of the present disclosure may be the control device of the power supply system provided in the embodiment of the present disclosure, and the control device of the power supply system may be a hardware device having a data information processing capability and/or necessary software for driving the hardware device to operate. Alternatively, the execution subject may include a workstation, a server, a computer, a user terminal, and other devices. The user terminal includes, but is not limited to, a mobile phone, a computer, an intelligent voice interaction device, an intelligent household appliance, a vehicle-mounted terminal, and the like.

As will be understood by those skilled in the art, a data center is a core area of information integration, and usually carries important storage or computing resources, so that the data center must have sufficient power supply guarantee, and a UPS/HVDC + lead-acid storage battery is usually configured as a backup power supply for a data center server. At present, the peak-valley difference of electric power of all regions is larger and larger, energy storage is built through a data center, on one hand, the peak clipping and valley filling can be carried out by matching with a power grid, the peak power supply of the power grid is indirectly reduced, the carbon emission of a power generation side and the carbon emission of the power grid side are reduced, and on the other hand, economic benefits can be directly obtained through the peak-valley difference of the electric power.

In the related art, an energy storage scheme is mainly a centralized energy storage scheme, that is, only one energy storage system is arranged in one data center, and usually, a UPS/HVDC + battery is configured in the data center to be used as a backup power supply of a server of the data center to be used as backup power, wherein the battery is generally used only for backup power, and the backup power time is generally 10-30min. However, the floor area of the centralized energy storage is large, the UPS and the HVDC configured batteries are difficult to fall to the ground or be transformed in a project, the UPS and the HVDC configured batteries are only used for standby power, even if the battery configuration is increased, if the control method is not transformed, the function of integrating the energy storage and the standby power cannot be realized, and in addition, some UPSs and the HVDC configured batteries as schemes for standby power and energy storage or control methods are complicated and unreliable, and the economic benefit is not high.

In order to solve the above problems, the present disclosure provides a control method for a power supply system, where the energy storage and backup scheme is a distributed scheme, that is, one data center is composed of multiple distributed energy storage and backup subsystems, each set of subsystem is configured with a configured UPS or HVDC, and the subsystems are decoupled from each other. The control method is simple and reliable, the difficulty of landing or transformation is reduced, the function of integrating energy storage and standby power is realized, and the economic benefit is improved.

Specifically, the energy storage discharge state refers to specific state information of energy storage and discharge of the battery, the current time is real-time automatically detected and acquired by the uninterruptible power supply, the full charge state refers to state information of the battery when the electric quantity of the battery is full, and the energy storage discharge state, the current time and the full charge state of the battery are acquired for subsequent processing. It should be noted that, when the HVDC and the UPS of the present disclosure adopt the original scheme and are applied as an energy storage and standby power, the control methods of the HVDC and the UPS are similar, and the present disclosure is only described below by taking the HVDC as an example, and at this time, the current time is the real-time automatically detected and acquired by the HVDC

It should be noted that, the energy storage discharge state of the battery can be represented and judged by a flag bit. For example, K is a flag bit of an energy storage and discharge State of the battery, and when K =1, it indicates that a battery capacity (State of Charge, SOC) is greater than a capacity corresponding to a power reserve time, where the battery capacity is detected in real time by a system and is correspondingly converted, and the power reserve time of the battery and the battery capacity have a corresponding relationship, for example, if the battery needs to be charged for 15 minutes, and the battery capacity corresponding to 15 minutes is 15%, it is necessary to satisfy a condition that SOC > 15% to perform energy storage and discharge of the battery; when k =0, this is a default value of the energy storage and discharge state of the battery, and indicates that the battery capacity is smaller than the capacity corresponding to the power backup time, for example, if the battery needs to be powered for 15 minutes, the battery capacity corresponding to 15 minutes is 15%, and when the condition that SOC is less than or equal to 15% is satisfied, this indicates that the energy storage and discharge of the battery cannot be performed, this value is set to ensure the reliability of the power backup, and since this value is a default value, even if the communication is wrong, this value defaults to 0, that is, the energy storage and discharge of the battery cannot be performed.

It should be noted that the full state of the battery may be indicated and determined by a flag bit. For example, M is a flag bit of a full state of the battery, and when M =1, it indicates that the battery capacity is not full, i.e., SOC < 100%, and at this time, the battery may be charged; when M =0, this is the default value of the full state of the battery, indicating that the battery capacity is full, i.e., SOC =100%, at which time the battery cannot be charged.

And S102, acquiring a preset discharging time interval and a preset charging time interval.

Specifically, the discharging time period is a time period for discharging the preset battery, the charging time period is a time period for charging the preset battery, and the preset discharging time period and the preset charging time period are acquired for subsequent processing. It should be noted that the discharge period and the charge period may be repeated, that is, the battery is discharged and charged simultaneously when the discharge period and the charge period are repeated.

It should be noted that, for energy storage application, HVDC needs to be correspondingly controlled according to peak-valley flat electricity price time periods of various places, and the electricity price time periods may include peak periods, valley periods, flat periods and other periods. In order to better control a power supply system, different time periods can be distinguished through zone bits, the time period corresponding to the zone bits can be preset in the HVDC, then the HVDC correspondingly converts the zone bits in real time according to a clock, the zone bits are only used as internal control and are not transmitted externally, in addition, the different time periods can be distinguished through other condition modes, which is not described in detail in the disclosure, as long as the different time periods can be distinguished, and the following 2 zone bits are used for distinguishing the different time periods in the disclosure.

For example, the 2 flag bits may be a charging period flag bit C and a discharging period flag bit D, where C and D may both take values of 1 and 0, where C =1 represents a charging period, C =0 represents a non-charging period, which is a default value that charging may not be performed by default, D =1 represents a discharging period, and D =0 represents a non-discharging period, which is a default value that discharging may not be performed by default. As shown in fig. 2 below, fig. 2 is a schematic diagram of a peak-to-valley difference time period rule in a certain area, and includes time periods t1, t2, t3, t4, t5, and the like, if charging is required to be performed in the time periods t1 and t3, discharging is required to be performed in the time periods t2 and t4, and neither charging nor discharging is required to be performed in the time period t5, the flag bits may be set as shown in fig. 2.

And S103, adjusting the output voltage of the direct current bus according to the energy storage discharge state, the current time, the full charge state, the discharge time interval and the charge time interval so as to realize the control of the charge and discharge state of the power supply system.

Specifically, the output voltage of the dc bus is adjusted according to the energy storage discharge state of the battery, the current time, and the full charge state of the battery obtained in step S101, and the preset discharge time period and the preset charge time period obtained in step S102, so as to control the charge and discharge state of the power supply system. It should be noted that, the charge and discharge state of the power supply system includes a battery charge state, a battery energy storage discharge state and a normal discharge state, and the power failure of the utility power, the utility power restoration, the battery discharge and the like are conventional states, and the power failure, the utility power restoration, the battery discharge and the like are performed according to normal logic without special control, which is not described in detail in the present disclosure.

In summary, the control method of the power supply system according to the embodiment of the disclosure obtains the energy storage discharge state of the battery, the current time, and the full charge state of the battery, obtains the preset discharge time period and the preset charge time period, and adjusts the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period, and the charge time period, so as to control the charge and discharge state of the power supply system. According to the control method of the power supply system, the output voltage of the direct current bus is adjusted according to the acquired energy storage discharge state, the current time, the full charge state of the battery, the preset discharge time period and the charge time period, so that the control of the charge and discharge state of the power supply system is realized, the control method is simpler and more reliable, the difficulty in landing or transformation in a project is reduced, the function of integrating energy storage and standby power is realized, and the economic benefit is improved while the standby power is ensured.

Fig. 3 is a flowchart illustrating a control method of a power supply system according to a second embodiment of the present disclosure.

As shown in fig. 3, on the basis of the embodiment shown in fig. 1, the method for controlling a power supply system according to the embodiment of the present disclosure may specifically include the following steps:

s301, acquiring the energy storage and discharge state, the current time and the full charge state of the battery.

Alternatively, the energy storage discharge state may be acquired from a Battery Management System (BMS).

Alternatively, the full state may be acquired from a battery management system.

And S302, acquiring a preset discharging time period and a preset charging time period.

It should be noted that steps S301 to S302 in this embodiment are the same as steps S101 to S102 in the above embodiment, and are not described again here.

In the foregoing embodiment, the step S103 "adjusting the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period, and the charge time period to control the charge and discharge state of the power supply system" may specifically include the following steps S303 to S304:

and S303, in response to the fact that the energy storage discharge state is the non-energy storage discharge state, dynamically adjusting the output voltage of the direct current bus to control the charge-discharge state of the power supply system to be in the battery charge state.

Specifically, the energy storage discharge state may include non-energy storage discharge, the energy storage discharge state is determined, and if the energy storage discharge state is non-energy storage discharge, the output voltage of the dc bus is dynamically adjusted to control the charge and discharge state of the power supply system to be in the battery charge state.

At this time, the HVDC charges the battery and simultaneously discharges the load, and the charging voltage and the charging current are changed according to the charging requirement of the battery set in advance so that the battery is fully charged, and this state occurs only when the battery does not satisfy the standby time and during the energy storage charging period (K =0 and C =1 and D =0 and M = 1).

And S304, in response to the energy storage and discharge state is energy storage and discharge and the current time is a discharge time period, adjusting the voltage of the direct current bus to be a preset energy storage and discharge voltage so as to control the charge and discharge state of the power supply system to be in a battery energy storage and discharge state.

Specifically, the energy storage discharge state may include energy storage discharge, the energy storage discharge state and the current time are determined, and if the energy storage discharge state is energy storage discharge and the current time is a discharge time period, the output voltage of the dc bus is adjusted to control the charge and discharge state of the power supply system to be in the battery energy storage discharge state.

It should be noted that, at this time, the HVDC stops supplying power to the load, and the dc bus voltage is adjusted to be the preset energy storage discharge voltage. For example, 200V, it is ensured that the battery energy storage discharge state is performed, and at the same time, if the battery energy storage discharge state is stopped, the HVDC output voltage, for example, 200V, also meets the working voltage of the load, and this state only occurs when the battery meets the standby time and is the energy storage discharge period, i.e., K =1 and D =1.

In summary, the control method of the power supply system according to the embodiment of the disclosure obtains the energy storage discharge state of the battery, the current time, and the full charge state of the battery, obtains the preset discharge time period and the preset charge time period, and dynamically adjusts the output voltage of the dc bus in response to the energy storage discharge state being non-energy storage discharge, so as to control the charge and discharge state of the power supply system to be in the battery charge state, and in response to the energy storage discharge state being energy storage discharge, and the current time being the discharge time period, adjusts the voltage of the dc bus to be the preset energy storage discharge voltage, so as to control the charge and discharge state of the power supply system to be in the battery energy storage discharge state. According to the control method of the power supply system, the output voltage of the direct-current bus is adjusted according to the obtained energy storage discharge state, the current time, the full charge state of the battery, the preset discharge time period and the preset charge time period, so that the control on the charge-discharge state of the power supply system is realized, the control method is simpler and more reliable, the difficulty in landing or transformation in a project is reduced, the function of integrating energy storage and standby power is realized, and the economic benefit is improved while the standby power is ensured. Meanwhile, the output voltage of the direct current bus is regulated according to the energy storage discharge state, the current time, the full state, the discharge time interval and the charge time interval, so that the control on the charge and discharge state of the power supply system is further realized.

Fig. 4 is a flowchart illustrating a control method of a power supply system according to a third embodiment of the present disclosure.

As shown in fig. 4, on the basis of the embodiment shown in fig. 1, the method for controlling a power supply system according to the embodiment of the present disclosure may specifically include the following steps:

s401, acquiring the energy storage discharge state of the battery, the current time and the full charge state of the battery.

S402, acquiring a preset discharging time interval and a preset charging time interval.

It should be noted that steps S401 to S402 in this embodiment are the same as steps S101 to S202 in the above embodiment, and are not described again here.

Step S103 "adjust the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period, and the charge time period to realize the control of the charge and discharge state of the power supply system" in the above embodiment further includes the following steps:

and S403, in response to that the energy storage discharge state is energy storage discharge, the current time is a non-discharge time period, the full charge state is not full charge, and the current time is a charge time period, dynamically adjusting the output voltage of the direct current bus to control the charge and discharge state of the power supply system to be in a battery charge state.

Specifically, if the energy storage discharge state is energy storage discharge, the current time is a non-discharge time period, the full-charge state is not full, and the current time is a charge time period, the output voltage of the direct current bus is adjusted to control the charge-discharge state of the power supply system to be in the battery charge state. When K =1 and D =0 and M =1 and C =1, the dc bus output voltage is adjusted to control the charging/discharging state of the power supply system to be the battery charging state.

And S404, in response to the energy storage discharge state being energy storage discharge, the current time being a non-discharge time period, the full-charge state being not full, and the current time being a non-charge time period, adjusting the voltage of the direct current bus to a preset normal discharge voltage to control the charge and discharge state of the power supply system to be in a normal discharge state.

Specifically, if the energy storage discharge state is energy storage discharge, the current time is a non-discharge time period, the full-charge state is not full, and the current time is a non-charge time period, the output voltage of the direct current bus is adjusted to control the charge and discharge state of the power supply system to be in a normal discharge state.

When K =1 and D =0 and M =1 and C =0, the HVDC discharges the load and the battery does not discharge the stored energy. At this time, the dc bus voltage is adjusted to a normal voltage value (for example, 270V), and the standby voltage of the battery is lower than 270V, so that the battery is in a standby state and is discharged only by the HVDC, that is, in a normal discharge state. The battery has three states of standby, charging and discharging, and the standby state of the battery is that the battery is in a state of not charging and not discharging.

Otherwise, corresponding control work is carried out according to the schematic diagram shown in the following fig. 5 to ensure that the system operates normally and stably. The commercial power failure also comprises the conditions of commercial power abnormity and the like, at the moment, the battery is directly discharged, the battery must be discharged no matter how much capacity and electric quantity the battery remains, any control is not needed, and the market recovery means that HVDC is restarted normally after the commercial power voltage is normal, and then the conventional control is continued.

In summary, the control method of the power supply system according to the embodiment of the disclosure obtains the energy storage discharge state of the battery, the current time, and the full charge state of the battery, and dynamically adjusts the output voltage of the dc bus in response to the energy storage discharge state being energy storage discharge, the current time being a non-discharge time period, the full charge state being not full, and the current time being a charge time period, so as to control the charge-discharge state of the power supply system to be in the battery charge state, and in response to the energy storage discharge state being energy storage discharge, the current time being a non-discharge time period, the full charge state being not full, and the current time being a non-charge time period, the voltage of the dc bus is adjusted to be the preset normal discharge voltage, so as to control the charge-discharge state of the power supply system to be in the normal discharge state. According to the control method of the power supply system, the output voltage of the direct current bus is adjusted according to the acquired energy storage discharge state, the current time, the full charge state of the battery, the preset discharge time period and the charge time period, so that the control of the charge and discharge state of the power supply system is realized, the control method is simpler and more reliable, the difficulty in landing or transformation in a project is reduced, the function of integrating energy storage and standby power is realized, and the economic benefit is improved while the standby power is ensured. Meanwhile, the output voltage of the direct current bus is adjusted according to the energy storage discharge state, the current time, the full charge state, the discharge time interval and the charge time interval, so that the control on the charge and discharge state of the power supply system is further realized.

Fig. 6 is a block diagram of a battery management system according to a first embodiment of the present disclosure. As shown in fig. 6, the battery management system 600 according to the embodiment of the disclosure may specifically include: current sensor 601, diode 602, contactor 603, circuit breaker 604, battery management module 605. Wherein,

a first terminal of the current sensor 601 is connected to the positive electrode of the battery.

The anode of the diode 602 is connected to the second terminal of the current sensor 601 and the cathode of the diode is connected to the first terminal of the first switch in the breaker 604.

The contactor 603 is connected in parallel with the diode 602.

The circuit breaker 604 includes a first switch and a second switch linked together, a second end of the first switch is connected to the positive electrode of the dc bus, a first end of the second switch is connected to the negative electrode of the battery, and a second end of the second switch is connected to the negative electrode of the dc bus.

The battery management module 606 is connected to the current sensor 601, the contactor 603, the circuit breaker 604, the battery, and the uninterruptible power supply, respectively. The battery management module 605 is a control center of the battery management system 600. Alternatively, the battery management module may be a motherboard of the battery management system.

Further, the battery management module 605 is configured to obtain the discharge current and the capacity of the battery acquired by the current sensor 601, generate an energy storage discharge state and a full charge state of the battery according to the capacity of the battery, control the contactor 603 and the circuit breaker 604 to operate according to the discharge current, the capacity of the battery and the full charge state, and send the energy storage discharge state and the full charge state to the uninterruptible power supply, so that the uninterruptible power supply adjusts the output voltage of the dc bus according to the energy storage discharge state and the full charge state, so as to implement control over the charge and discharge state of the power supply system, where the charge and discharge state of the power supply system includes a battery charge state, a battery energy storage discharge state, and a normal discharge state.

The battery management module 605 adopts a simple communication protocol such as a dry contact for external communication, ensures the reliability of the battery and the communication between the UPS and the HVDC, does not control each other, and ensures the reliable operation of the system even if a signal fails. In order to realize the functions of power backup and energy storage, the 2 flag bits are needed, which is the only information to be communicated between the battery and the UPS/HVDC.

In summary, in the battery management system according to the embodiment of the disclosure, the battery management module 605 sends the energy storage discharge state and the full charge state to the uninterruptible power supply, so that the uninterruptible power supply adjusts the output voltage of the dc bus according to the energy storage discharge state and the full charge state, thereby realizing control of the charge and discharge state of the power supply system.

Fig. 7 is a flowchart illustrating a control method of a power supply system according to a fourth embodiment of the present disclosure. An execution main body of the control method of the power supply system in the embodiment of the present disclosure is a BMS motherboard, the power supply system includes the battery management system according to the first embodiment of the present disclosure, and as shown in fig. 7, the control method of the power supply system in the embodiment of the present disclosure may specifically include the following steps:

and S701, acquiring the discharge current acquired by the current sensor.

Specifically, the discharge current collected by the current sensor is acquired for subsequent processing.

And S702, acquiring the capacity of the battery.

And S703, generating the full charge state of the battery according to the capacity of the battery.

Specifically, the full charge state of the battery is generated based on the capacity of the battery acquired in step S702,

and S704, controlling the action of the contactor according to the discharge current and the full-charge state so as to realize the control of the charge and discharge state of the battery.

Specifically, the battery charging and discharging state includes a battery charging state, a battery discharging state and a battery standby state, and the contactor is controlled to operate according to the discharging current acquired by the current sensor in step S701 and the full-charge state of the battery generated in step S703, so as to control the battery charging and discharging state.

As a possible implementation manner, in response to the discharge current exceeding a preset discharge current threshold, the contactor is controlled to be closed so as to control the battery charging and discharging state to be in the battery discharging state. For example, the preset discharge current threshold may be 10A, and when the discharge current is greater than 10A, the contactor is controlled to be closed, as shown in fig. 8. It should be noted that, when the discharge current exceeds the preset discharge current threshold, the circuit is being discharged through the diode,

as a possible implementation manner, in response to the discharging current not exceeding the preset discharging current threshold, the contactor is controlled to be closed so as to control the battery charging and discharging state to be in the battery charging state. For example, when the preset discharge current threshold is 10A, the contactor is controlled to be closed when the discharge current is not greater than 10A, as shown in fig. 8. It should be noted that when the BMS board detects that the battery needs to be charged, that is, M =1, after full charge, that is, SOC =100%, the control contactor is opened, and the battery enters a standby state, the contactor is closed to discharge, and if the contactor is not closed due to a contactor failure or a signal failure, the battery can also be discharged for a long time through the diode to ensure the reliability of standby power discharge, but there is a partial loss, and when the battery empties, that is, SOC =0%, the breaker is opened.

As a possible implementation manner, in response to that the discharge current does not exceed the preset discharge current threshold and the full charge state is full, the contactor is controlled to be opened so as to control the battery charge and discharge state to be in the battery standby state. For example, when the preset discharge current threshold is 10A, when the discharge current is not greater than 10A and M =0, the contactor is controlled to be opened, as shown in fig. 8. When the battery is in standby, the contactor is turned off, and the battery can be conducted only through the diode.

It should be noted that the above explanation of the embodiment of the control method of the power supply system is also applicable to the control method of the power supply system in the embodiment of the present disclosure, and the specific process is not described herein again.

In summary, the control method of the power supply system in the embodiment of the disclosure obtains the discharge current collected by the current sensor, obtains the capacity of the battery, generates the full charge state of the battery according to the capacity of the battery, and controls the contactor to operate according to the discharge current and the full charge state, so as to control the charge and discharge state of the battery. According to the control method of the power supply system, the action of the contactor is controlled according to the discharge current and the full-charge state, so that the control of the charge and discharge state of the battery is realized.

Fig. 9 is a block diagram of a control device of a power supply system according to a first embodiment of the present disclosure.

As shown in fig. 9, a control device 900 of a power supply system according to an embodiment of the present disclosure includes: a first obtaining module 901, a second obtaining module 902, and an adjusting module 903.

A first obtaining module 901, configured to obtain an energy storage and discharge state of a battery, a current time, and a full charge state of the battery;

a second obtaining module 902, configured to obtain a preset discharging time period and a preset charging time period;

and the adjusting module 903 is configured to adjust the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period, and the charge time period, so as to control the charge and discharge state of the power supply system, where the charge and discharge state of the power supply system includes a battery charge state, a battery energy storage discharge state, and a normal discharge state.

It should be noted that the above explanation of the embodiment of the control method for the power supply system is also applicable to the control device for the power supply system in the embodiment of the present disclosure, and the specific process is not described herein again.

In summary, the control device of the power supply system according to the embodiment of the disclosure obtains the energy storage discharge state, the current time, and the full charge state of the battery, obtains the preset discharge time period and the preset charge time period, and adjusts the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period, and the charge time period, so as to control the charge and discharge state of the power supply system. The control device of the power supply system adjusts the output voltage of the direct current bus according to the acquired energy storage discharge state, the current time, the full charge state of the battery, the preset discharge time period and the charge time period, realizes the control of the charge and discharge state of the power supply system, is simpler and more reliable in control method, reduces the difficulty of falling to the ground or transformation in a project, realizes the function of integrating energy storage and standby power, and improves the economic benefit while ensuring the standby power.

Fig. 10 is a block diagram of a control device of a power supply system according to a second embodiment of the present disclosure.

As shown in fig. 10, a control device 1000 of a power supply system according to an embodiment of the present disclosure includes: a first obtaining module 1001, a second obtaining module 1002, and an adjusting module 1003.

The first obtaining module 1001 has the same structure and function as the first obtaining module 901 in the previous embodiment, the second obtaining module 1002 has the same structure and function as the second obtaining module 902 in the previous embodiment, and the adjusting module 1003 has the same structure and function as the adjusting module 903 in the previous embodiment.

Further, the adjusting module 1003 includes: the first adjusting unit 10031 is configured to dynamically adjust the output voltage of the dc bus in response to that the energy storage discharge state is the non-energy storage discharge state, so as to control the charge and discharge state of the power supply system to be in the battery charge state; the second adjusting unit 10032 is configured to adjust the dc bus voltage to a preset energy storage discharge voltage in response to that the energy storage discharge state is energy storage discharge, and the current time is a discharge time period, so as to control the charge and discharge state of the power supply system to be in the battery energy storage discharge state.

10 further, the adjusting module 1003 includes: the third adjusting unit is used for responding to the situation that the energy storage discharging state is energy storage discharging, the current time is not a discharging time interval, the full charging state is not full, and the current time is a charging time interval, and dynamically adjusting the output voltage of the direct current bus so as to control the charging and discharging state of the power supply system to be in a battery charging state; and the fourth adjusting unit is used for responding to the situation that the energy storage discharging state is energy storage discharging, the current time is not a discharging time interval, the full-charging state is not full-charging, and the current time is not a charging time interval, adjusting the voltage of the direct current bus to be a preset normal discharging voltage so as to control the charging and discharging state of the power supply system to be in a normal discharging state.

10 further, the first obtaining module 1001 includes: the battery management system comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring an energy storage discharge state from the battery management system; a first obtaining module 1001, comprising: a second acquisition unit for acquiring the full charge state from the battery management system.

In summary, the control device of the power supply system in the embodiment of the disclosure obtains the energy storage discharge state of the battery, the current time, and the full charge state of the battery, obtains the preset discharge time period and the preset charge time period, and adjusts the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period, and the charge time period, so as to realize control of the charge and discharge state of the power supply system, where the charge and discharge state of the power supply system includes the battery charge state, the battery energy storage discharge state, and the normal discharge state. The control device of the power supply system adjusts the output voltage of the direct current bus according to the acquired energy storage discharge state, the current time, the full charge state of the battery, the preset discharge time period and the charge time period, realizes the control of the charge and discharge state of the power supply system, is simpler and more reliable in control method, reduces the difficulty of falling to the ground or transformation in a project, realizes the function of integrating energy storage and standby power, and improves the economic benefit while ensuring the standby power. Meanwhile, the output voltage of the direct current bus is regulated according to the energy storage discharge state, the current time, the full state, the discharge time interval and the charge time interval, so that the control on the charge and discharge state of the power supply system is further realized.

Fig. 11 is a block diagram of a control device of a power supply system according to a third embodiment of the present disclosure.

As shown in fig. 11, the control device 1100 of the power supply system according to the embodiment of the present disclosure includes: a third acquisition module 1101, a fourth acquisition module 1102, a generation module 1103, and a control module 1104.

The third obtaining module 1101 is configured to obtain a discharge current collected by the current sensor.

A fourth obtaining module 1102, configured to obtain a capacity of the battery.

A generating module 1103 configured to generate a full-charge state of the battery according to a capacity of the battery.

And the control module 1104 is configured to control the contactor to operate according to the discharge current and the fully charged state, so as to control the battery charging and discharging state, where the battery charging and discharging state includes a battery charging state, a battery discharging state, and a battery standby state.

Further, the control module 1104 includes: and the first control unit is used for responding to the fact that the discharging current exceeds a preset discharging current threshold value, and controlling the contactor to be closed so as to control the charging and discharging state of the battery to be in the discharging state of the battery.

Further, the control module 1104 includes: the second control unit is used for responding to the fact that the discharging current does not exceed a preset discharging current threshold value and the full-charge state is not full-charged, and controlling the contactor to be closed so as to control the charging and discharging state of the battery to be in the charging state of the battery; and the third control unit is used for responding to the fact that the discharging current does not exceed a preset discharging current threshold value and the full-charge state is full, and controlling the contactor to be switched off so as to control the charging and discharging state of the battery to be in a battery standby state.

In summary, the control device of the power supply system according to the embodiment of the disclosure obtains the discharge current collected by the current sensor, obtains the capacity of the battery, generates the full charge state of the battery according to the capacity of the battery, and controls the contactor to operate according to the discharge current and the full charge state, so as to control the charge and discharge state of the battery. The control device of the power supply system controls the action of the contactor according to the discharge current and the full-charge state, and realizes the control of the charge and discharge state of the battery.

In the technical scheme of the disclosure, the collection, storage, use, processing, transmission, provision, disclosure and other processing of the personal information of the related user are all in accordance with the regulations of related laws and regulations and do not violate the good customs of the public order.

The present disclosure also provides an electronic device, a readable storage medium, and a computer program product according to embodiments of the present disclosure.

FIG. 12 shows a schematic block diagram of an example electronic device 1200, which can be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the disclosure described and/or claimed herein.

As shown in fig. 12, the electronic apparatus 1200 includes a computing unit 1201 that can perform various appropriate actions and processes in accordance with a computer program stored in a Read Only Memory (ROM) 1202 or a computer program loaded from a storage unit 1208 into a Random Access Memory (RAM) 1203. In the RAM 1203, various programs and data necessary for the operation of the electronic apparatus 1200 may also be stored. The computing unit 1201, the ROM 1202, and the RAM 1203 are connected to each other by a bus 1204. An input/output (I/O) interface 1205 is also connected to bus 1204.

Various components in the electronic device 1200 are connected to the I/O interface 1205, including: an input unit 1206 such as a keyboard, a mouse, or the like; an output unit 1207 such as various types of displays, speakers, and the like; a storage unit 1208, such as a magnetic disk, optical disk, or the like; and a communication unit 1209 such as a network card, modem, wireless communication transceiver, etc. The communication unit 1209 allows the electronic device 1200 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.

The computing unit 1201 may be a variety of general purpose and/or special purpose processing components having processing and computing capabilities. Some examples of the computing unit 1201 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various dedicated Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, and so forth. The calculation unit 1201 executes various methods and processes described above, such as the control method of the power supply system shown in fig. 1 to 5 or the control method of the power supply system shown in fig. 7 to 8. For example, in some embodiments, the control method of the power supply system may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as storage unit 1208. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 1200 via the ROM 1202 and/or the communication unit 1209. When the computer program is loaded into the RAM 1203 and executed by the computing unit 1201, one or more steps of the control method of the power supply system described above may be performed. Alternatively, in other embodiments, the computing unit 1201 may be used to perform the control method of the power supply system in any other suitable way (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable power supply system, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), the Internet, and blockchain networks.

The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The Server can be a cloud Server, also called a cloud computing Server or a cloud host, and is a host product in a cloud computing service system, so as to solve the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service ("Virtual Private Server", or simply "VPS"). The server may also be a server of a distributed system, or a server incorporating a blockchain.

According to an embodiment of the present disclosure, there is also provided a computer program product comprising a computer program, wherein the computer program, when being executed by a processor, realizes the steps of the method for controlling a power supply system according to the above-mentioned embodiment of the present disclosure.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel or sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A method of controlling a power supply system, comprising:

acquiring an energy storage and discharge state, current time and full charge state of a battery;

acquiring a preset discharging time period and a preset charging time period;

and adjusting the output voltage of the direct current bus according to the energy storage discharge state, the current time, the full charge state, the discharge time interval and the charge time interval so as to realize the control of the charge and discharge state of the power supply system, wherein the charge and discharge state of the power supply system comprises a battery charge state, a battery energy storage discharge state and a normal discharge state.

2. The control method according to claim 1, wherein the adjusting the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge period, and the charge period to realize the control of the charge and discharge state of the power supply system comprises:

responding to the fact that the energy storage discharge state is non-energy storage discharge, and dynamically adjusting the output voltage of the direct current bus to control the charge-discharge state of the power supply system to be in the battery charge state;

and in response to the energy storage discharge state is energy storage discharge and the current time is the discharge time period, adjusting the direct current bus voltage to be a preset energy storage discharge voltage so as to control the charge-discharge state of the power supply system to be in the battery energy storage discharge state.

3. The control method according to claim 1, wherein the adjusting the output voltage of the dc bus according to the energy storage discharge state, the current time, the full charge state, the discharge period, and the charge period to realize the control of the charge and discharge state of the power supply system comprises:

responding to the energy storage discharging state that energy storage discharging is available, the current time is a non-discharging time period, the full charging state is not full, and the current time is a charging time period, and dynamically adjusting the output voltage of the direct current bus to control the charging and discharging state of the power supply system to be in the battery charging state;

and responding to the condition that the energy storage discharge state is energy storage discharge, the current time is a non-discharge time period, the full-charge state is not full, and the current time is a non-charge time period, and adjusting the voltage of the direct current bus to be a preset normal discharge voltage so as to control the charge-discharge state of the power supply system to be in the normal discharge state.

4. The control method of claim 1, wherein obtaining the energy storage discharge state comprises:

acquiring the energy storage discharge state from a battery management system;

acquiring the full state, including:

obtaining the full charge state from the battery management system.

5. A battery management system, comprising:

the first end of the current sensor is connected with the positive electrode of the battery;

the anode of the diode is connected with the second end of the current sensor, and the cathode of the diode is connected with the first end of the first switch in the circuit breaker;

a contactor connected in parallel with the diode;

the circuit breaker comprises the first switch and a second switch which are linked, wherein the second end of the first switch is connected with the positive electrode of the direct current bus, the first end of the second switch is connected with the negative electrode of the battery, and the second end of the second switch is connected with the negative electrode of the direct current bus;

the battery management module is respectively connected with the current sensor, the contactor, the circuit breaker, the battery and the uninterruptible power supply;

the battery management module is used for acquiring the discharge current collected by the current sensor and the capacity of the battery, generating the energy storage discharge state and the full charge state of the battery according to the capacity of the battery, controlling the contactor and the breaker to act according to the discharge current and the capacity of the battery and the full charge state, and sending the energy storage discharge state and the full charge state to the uninterruptible power supply to supply the uninterruptible power supply to control the charge and discharge state of the power supply system according to the energy storage discharge state and the full charge state by adjusting the output voltage of the direct current bus, wherein the charge and discharge state of the power supply system comprises a battery charge state, a battery energy storage discharge state and a normal discharge state.

6. A control method of a power supply system including the battery management system according to claim 5, the control method comprising:

acquiring a discharge current acquired by a current sensor;

acquiring the capacity of a battery;

generating a full-charge state of the battery according to the capacity of the battery;

and controlling the action of a contactor according to the discharge current and the full-charge state so as to realize the control of the charge-discharge state of the battery, wherein the charge-discharge state of the battery comprises a battery charge state, a battery discharge state and a battery standby state.

7. The control method according to claim 6, wherein the controlling a contactor to operate according to the discharge current and the fully charged state to realize control of the battery charge-discharge state comprises:

and responding to the fact that the discharging current exceeds a preset discharging current threshold value, controlling the contactor to be closed so as to control the charging and discharging state of the battery to be in the discharging state of the battery.

8. The control method according to claim 6, wherein the controlling the contactor to operate according to the discharge current and the full charge state to realize the control of the battery charge and discharge state comprises:

in response to that the discharge current does not exceed a preset discharge current threshold and the full-charge state is not full, controlling the contactor to be closed so as to control the battery charge-discharge state to be in the battery charge state;

and in response to the fact that the discharging current does not exceed a preset discharging current threshold value and the full-charge state is not full, controlling the contactor to be closed so as to control the charging and discharging state of the battery to be in the charging state of the battery.

9. A control device of a power supply system, comprising:

the device comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring the energy storage discharge state of a battery, the current time and the full charge state of the battery;

the second acquisition module is used for acquiring a preset discharging time period and a preset charging time period;

and the adjusting module is used for adjusting the output voltage of the direct current bus according to the energy storage discharge state, the current time, the full charge state, the discharge time period and the charge time period so as to realize the control of the charge and discharge state of the power supply system, and the charge and discharge state of the power supply system comprises a battery charge state, a battery energy storage discharge state and a normal discharge state.

10. The control device of claim 9, wherein the adjustment module comprises:

the first adjusting unit is used for responding to the situation that the energy storage discharging state is non-energy storage discharging, and dynamically adjusting the output voltage of the direct current bus so as to control the charging and discharging state of the power supply system to be in the battery charging state;

and the second adjusting unit is used for responding to the condition that the energy storage discharging state is energy storage discharging, and the current time is the discharging time period, adjusting the direct current bus voltage to be a preset energy storage discharging voltage so as to control the charging and discharging state of the power supply system to be in the battery energy storage discharging state.

11. The control device of claim 9, wherein the adjustment module comprises:

the third adjusting unit is used for responding to the situation that the energy storage discharging state is energy storage discharging, the current time is a non-discharging time period, the full-charging state is not full, and the current time is a charging time period, and dynamically adjusting the output voltage of the direct current bus so as to control the charging and discharging state of the power supply system to be in the battery charging state;

and the fourth adjusting unit is used for responding to the situation that the energy storage discharging state is energy storage discharging, the current time is not the discharging time interval, the full-charging state is not full-charging, and the current time is not the charging time interval, and then the voltage of the direct current bus is adjusted to be a preset normal discharging voltage so as to control the charging and discharging state of the power supply system to be in the normal discharging state.

12. The control device of claim 9, wherein the first obtaining module comprises:

the first acquisition unit is used for acquiring the energy storage and discharge state from a battery management system;

a first acquisition module comprising:

a second acquisition unit configured to acquire the full charge state from the battery management system.

13. A control device of a power supply system, wherein the power supply system includes the battery management system according to claim 5, the control device comprising:

the third acquisition module is used for acquiring the discharge current acquired by the current sensor;

the fourth acquisition module is used for acquiring the capacity of the battery;

the generating module is used for generating a full-charge state of the battery according to the capacity of the battery;

and the control module is used for controlling the action of the contactor according to the discharge current and the full-charge state so as to realize the control on the charge and discharge state of the battery, wherein the charge and discharge state of the battery comprises a battery charge state, a battery discharge state and a battery standby state.

14. The control device of claim 13, wherein the control module comprises:

the first control unit is used for responding to the fact that the discharge current exceeds a preset discharge current threshold value, and then the contactor is controlled to be closed so as to control the battery charging and discharging state to be in the battery discharging state.

15. The control device of claim 13, wherein the control module comprises:

the second control unit is used for responding to the situation that the discharging current does not exceed a preset discharging current threshold value and the full-charge state is not full, controlling the contactor to be closed so as to control the charging and discharging state of the battery to be in the charging state of the battery;

and the third control unit is used for responding to the situation that the discharge current does not exceed a preset discharge current threshold and the full-charge state is full, and controlling the contactor to be switched off so as to control the battery charge-discharge state to be in the battery standby state.

16. An electronic device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-4 or to perform the method of any one of claims 6-8.

17. A non-transitory computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1-4 or to perform the method of any one of claims 6-8.

18. A computer program product comprising a computer program which, when executed by a processor, carries out the steps of the method according to any one of claims 1 to 4 or carries out the steps of the method according to any one of claims 6 to 8.