CN115882487A

CN115882487A - Control device, control method, storage medium and energy storage system

Info

Publication number: CN115882487A
Application number: CN202211600078.8A
Authority: CN
Inventors: 郭洋
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-03-31
Anticipated expiration: 2042-12-13
Also published as: CN115882487B

Abstract

The embodiment of the application discloses a control device, a control method, a storage medium and an energy storage system. The first control module can control the first loop to be in a conducting state under the condition that the state information indicates that the main loop of the energy storage system is in the first state, so that the on-off execution module can receive the first control signal. The first control module can control the first loop to be in a disconnected state under the condition that the state information indicates that the main loop of the energy storage system is in the second state, and the disconnection execution module cannot receive the first control signal at the moment, namely cannot control the opening or closing of the main loop of the energy storage system, so that the main loop of the energy storage system can be prevented from being opened or closed under the condition that the main loop of the energy storage system is in the second state due to mistaken generation or mistaken reception of the first control signal, and the reliability of the energy storage system is improved.

Description

Control device, control method, storage medium and energy storage system

Technical Field

The application relates to the technical field of energy storage systems, in particular to a control device, a control method, a storage medium and an energy storage system.

Background

In a power grid system, an energy storage system is responsible for storing and releasing energy, and the energy storage system is required to participate in the operation of both electric equipment and power generation equipment, so that the energy storage system is the key for ensuring the stable operation of the whole power grid system.

In order to ensure the stable operation of the energy storage system, the switch equipment capable of powering off the energy storage system is arranged in the energy storage system, so that maintenance personnel can realize the power off of the energy storage system through the switch equipment under the condition that the energy storage system needs to be maintained or overhauled, and the like, and maintain or overhaul the energy storage system.

Although the energy storage system can be maintained by maintenance personnel by arranging the switch device, the reliability of the energy storage system is also reduced.

Disclosure of Invention

The embodiment of the application discloses a control device, a control method thereof, a storage medium and an energy storage system, which can improve the reliability of the energy storage system.

The embodiment of the application discloses controlling means is applied to energy storage system, includes: a cut-off execution module, a first control module and a first loop, wherein the cut-off execution module is respectively connected with the energy storage system main loop and the first loop, the first control module is respectively connected with the energy storage system main loop and the first loop,

the first loop is used for outputting a first control signal to the on-off execution module;

the disconnection execution module is used for opening or closing the main loop of the energy storage system according to the first control signal;

the first control module is configured to obtain state information of the energy storage system main loop, and control the first loop to be in a conducting state under the condition that the state information indicates that the energy storage system main loop is in a first state, so that the first loop outputs a first control signal to the disconnection execution module; and under the condition that the state information indicates that the main loop of the energy storage system is in a second state, controlling the first loop to be in a disconnected state so that the first loop cannot output a first control signal to the disconnection execution module, wherein the first state comprises a standby state without an abnormal state and an abnormal state, and the second state is different from the first state.

The control device that this application embodiment provided, including breaking executive module, first control module group and first return circuit, first control module group can acquire the state information of energy storage system major loop to can confirm the energy storage system major loop according to state information and be the first state or for the second state different with the first state, wherein, the first state includes standby and no abnormal state and abnormal state. Under the condition that the state information indicates that the main loop of the energy storage system is in the first state, the first control module controls the first loop to be in a conducting state, so that the disconnection execution module can receive the first control signal, the disconnection execution module can open or close the main loop of the energy storage system according to the first control signal, and the purposes of power-on, power-off and maintenance of the main loop of the energy storage system are guaranteed. Meanwhile, under the condition that the state information indicates that the main loop of the energy storage system is in the second state, the first control module controls the first loop to be in the disconnected state, at the moment, the disconnection execution module cannot receive the first control signal, even if the control device generates or receives the first control signal, the first control signal cannot be input into the disconnection execution module, namely, the disconnection execution module cannot control the opening or closing of the main loop of the energy storage system, and therefore the situation that the main loop of the energy storage system is not required to be opened or closed due to the fact that the first control signal is generated or received by mistake under the condition that the main loop of the energy storage system is in the second state can be avoided, the main loop of the energy storage system is opened or closed, and the reliability of the energy storage system is improved.

As an optional implementation, the first control module comprises:

the switch unit is connected in series with the first circuit;

the first chip is respectively connected with the main loop of the energy storage system and the switch unit and is used for acquiring state information of the main loop of the energy storage system and controlling the switch unit to be in a closed state under the condition that the state information indicates that the main loop of the energy storage system is in a first state; under the condition that the state information indicates that the main loop of the energy storage system is in a second state, controlling the switch unit to be in a disconnected state;

this embodiment provides a structure of first control module group, this first control module group is including the switch element that concatenates in first return circuit and the first chip of being connected with switch element and energy storage system major loop respectively, this first chip can be used for acquireing the state information of energy storage system major loop to according to the state (on-state or off-state) of state information control switch element, can control first return circuit state (on-state or off-state), this first control module group's simple structure just can effectively realize the function according to the state of state information control first return circuit.

As an optional implementation manner, the first control signal includes a local control signal and a remote control signal, the first loop includes a signal switching module, an output end of the signal switching module is connected to a first end of the switch unit, a second end of the switch unit is connected to the disconnection performing module, and the signal switching module selectively outputs the local control signal or the remote control signal.

The control device provided by the embodiment comprises the signal switching module, the signal switching module can selectively output one of the local control signal and the remote control signal, the potential safety hazard caused by the fact that the on-off execution module receives the local control signal and the remote control signal at the same time can be avoided, and the safety of the energy storage system is improved.

As an optional implementation manner, the first loop further includes a second control module, which is connected to the position end of the signal switching module and the main loop of the energy storage system, respectively, and is configured to acquire the position information of the signal switching module, and control a mode of the main loop of the energy storage system to be an in-place control mode when the position information of the signal switching module indicates that the signal switching module is configured to output the in-place control signal; and under the condition that the position information of the signal switching module indicates that the signal switching module is used for outputting the remote control signal, controlling the mode of the main loop of the energy storage system to be a remote control mode.

The second control module provided by this embodiment is connected with the signal switching module, and the second control module can acquire and control the mode of the main loop of the energy storage system according to the position information of the signal switching module, so that the mode of the main loop of the energy storage system is consistent with the position information of the signal switching module.

As an optional implementation manner, the second control module is connected to the first input end of the signal switching module, and is further configured to input the remote control signal to the first input end of the signal switching module in response to a remote control operation, where the remote control signal includes a remote closing signal or a remote opening signal.

The second control module generates a remote control signal to control the on/off execution module to control the on/off of the main loop of the energy storage system, so that the purpose of maintaining the main loop of the energy storage system can be achieved.

As an optional embodiment, the energy storage system main loop comprises an energy storage converter, and the second control module is connected to the first chip and the energy storage converter respectively; the second control module is further configured to acquire operating information of the energy storage converter and first information reported by the first chip, and output the remote switching-on signal when a first condition is met;

the first condition comprises that the operation information indicates that the energy storage converter is in a standby state, the position information indicates that the signal switching module is used for outputting the remote control signal, the first information indicates that the switch unit is in a closed state, and the energy storage system main loop is in a power-on process.

In this embodiment of remote switching on, when the main circuit of the energy storage system is in the power-on process and in the remote control mode, the second control module outputs a remote switching on signal only when it is determined that the switching unit is in the closed state and the energy storage converter is in the standby state, so as to ensure that the remote switching on signal can be input to the disconnection execution module, thereby ensuring the validity of the output signal. Meanwhile, the second control module can automatically output a remote closing signal under the condition that the first condition is met, so that the main loop of the energy storage system is successfully powered on, and the automation degree of the main loop of the energy storage system is improved.

As an optional embodiment, the energy storage system main loop comprises an energy storage converter, and the second control module is connected to the energy storage converter and the first chip respectively; the second control module is further configured to acquire operating information of the energy storage converter and first information reported by the first chip, and output the remote tripping signal when a second condition is met;

the second condition comprises that the operation information indicates that the energy storage converter is in a standby state, the position information indicates that the signal switching module is used for outputting the remote control signal, the first information indicates that the switch unit is in a closed state, and the energy storage system main loop is in a power-off process.

In the remote opening embodiment, when the main loop of the energy storage system is in a power-off process and in a remote control mode, the switch unit is determined to be in a closed state, the energy storage converter is in a standby state, the second control module outputs a remote opening signal to ensure that the remote opening signal can be input to the on-off execution module, the validity of the output signal is ensured, and the phenomenon that the main loop of the energy storage system is damaged due to the fact that the main loop of the energy storage system is forcibly closed under the condition that the power of the main loop of the energy storage system is not 0 is avoided. Meanwhile, the second control module can automatically output a remote brake-off signal under the condition that the second condition is met, so that the main loop of the energy storage system is powered off successfully, and the automation degree of the main loop of the energy storage system is improved.

As an optional implementation manner, the first loop further includes an in-situ control module connected to the second input terminal of the signal switching module, the in-situ control module is configured to output the in-situ control signal in response to an in-situ control operation, and the in-situ control signal includes an in-situ opening signal and an in-situ closing signal.

The embodiment has increased the control module on the spot in controlling means, provides the generating device of control signal on the spot for the staff, thereby the control is cut off and is carried out the opening or the shutoff of module control energy storage system major loop through the control signal on the spot that the control module on the spot produced, can realize carrying out the purpose of maintaining the energy storage system major loop.

The embodiment of the application discloses a control method of an energy storage system, which is applied to a control device of the energy storage system, wherein the control device comprises a cut-off execution module and a first loop, the cut-off execution module is respectively connected with a main loop of the energy storage system and the first loop, the first loop is used for outputting a first control signal to the cut-off execution module, and the cut-off execution module is used for opening or closing the main loop of the energy storage system according to the first control signal; the control method comprises the following steps:

acquiring state information of a main loop of the energy storage system;

under the condition that the state information indicates that the main loop of the energy storage system is in a first state, controlling the first loop to be in a conducting state so as to enable the first loop to output a first control signal to the on-off execution module, wherein the first state comprises a standby state without abnormal state and an abnormal state;

and under the condition that the state information indicates that the energy storage system is in a second state, controlling the first circuit to be in a disconnected state so that the first circuit cannot output a first control signal to the disconnection execution module, wherein the second state is different from the first state.

The control method provided by the embodiment of the application can determine that the main loop of the energy storage system is in a first state or a second state different from the first state according to the state information, wherein the first state comprises a standby state without an abnormal state and an abnormal state. Under the condition that the state information indicates that the main loop of the energy storage system is in the first state, the first loop is controlled to be in the conducting state, so that the on-off execution module can receive the first control signal, the on-off execution module can open or close the main loop of the energy storage system according to the first control signal, and the purposes of power-on, power-off and maintenance of the main loop of the energy storage system are guaranteed. Meanwhile, under the condition that the state information indicates that the main loop of the energy storage system is in the second state, the first loop is controlled to be in the disconnected state, at the moment, the disconnection execution module cannot receive the first control signal, even if the control device generates or receives the first control signal, the first control signal cannot be input into the disconnection execution module, namely, the main loop of the energy storage system cannot be controlled to be opened or closed, so that the main loop of the energy storage system can be prevented from being opened or closed under the condition that the main loop of the energy storage system is in the second state and the first control signal is generated or received by mistake, and the main loop of the energy storage system is not required to be opened or closed, and the reliability of the energy storage system is improved.

An embodiment of the present application discloses a computer-readable storage medium on which a computer program is stored, and the computer program, when executed by a processor, implements any one of the control methods disclosed in the embodiment of the present application.

The embodiment of the application discloses an energy storage system, including any one kind of controlling means that this application embodiment disclosed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a control device of an energy storage system disclosed in an embodiment of the present application;

fig. 2 is a schematic structural diagram of another control device of an energy storage system disclosed in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another control device of an energy storage system according to an embodiment of the disclosure;

FIG. 4 is a schematic structural diagram of another control device of an energy storage system according to an embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of another control device of an energy storage system disclosed in the embodiments of the present application;

FIG. 6 is a schematic structural diagram of another control device of an energy storage system according to an embodiment of the disclosure;

fig. 7 is a schematic structural diagram of another control device of an energy storage system disclosed in the embodiment of the present application;

FIG. 8 is a schematic flow chart diagram illustrating a method for controlling an energy storage system according to an embodiment of the disclosure;

FIG. 9 is a schematic flow chart diagram illustrating another method for controlling an energy storage system according to an embodiment of the present disclosure;

fig. 10 is a schematic flow chart of another control method of an energy storage system disclosed in the embodiments of the present application.

Description of the reference numerals: a disconnection execution module 100; a control unit 110, a disconnection unit 120, an auxiliary unit 130; a first control module 200; a switching unit 210, a first chip 220; BMS221; a first circuit 300; a signal switching module 310, a second control module 320, and a local control module 330; an EMS321; a control power supply 331, an on-site closing unit 332, an on-site opening unit 333; an energy storage system 400; the energy storage converter 410, a direct current circuit 420 and an alternating current circuit 430.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the examples and figures of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

At present, the energy storage system is provided with the switch device, and the switch device can be used for switching on or switching off the current of the energy storage system, namely, the main loop of the energy storage system can be opened or closed, so that the safety of maintenance personnel in maintenance or overhaul of the main loop of the energy storage system can be ensured. The switchgear may be in an off state or an on state under the control of a remote control signal, which is a control signal output by a main controller or a remote dispatching device of the energy storage system, or a local control signal, which is a control signal output by a device in the field of the energy storage system.

As long as the present energy storage system generates the local control signal and/or the remote control signal, the switching device is in different states (on or off) under the control of the local control signal or the remote control signal, so that the main loop of the energy storage system is in different states (current on or current off). According to the above description, the switching device is used to implement current on/off of the main loop of the energy storage system in a maintenance or emergency situation (such as other situations with power outage needs), but sometimes a local control signal and/or a remote control signal is generated by mistake under the influence of a worker, an external person or an external factor, which causes a misoperation of the switching device, so that the main loop of the energy storage system is not required to be closed (for example, when the main loop of the energy storage system is operated and has no abnormality, the current of the energy storage system is turned off and the energy storage system is closed due to the misoperation of the switching device), or the main loop of the energy storage system is not required to be opened (when the current of the main loop of the energy storage system is turned off before a maintenance person maintains the main loop of the energy storage system, the current of the main loop of the energy storage system is turned on due to the misoperation of the switching device, which threatens the safety of the maintenance person), so that the reliability of the energy storage system is low.

In view of this, an embodiment of the present application provides a control device, which may be applied to an energy storage system, and the control device includes a disconnection performing module, a first control module, and a first loop, where the first control module is capable of obtaining state information of a main loop of the energy storage system, and determining that the main loop of the energy storage system is in a first state or a second state different from the first state according to the state information, where the first state includes a standby state and is not abnormal and an abnormal state. Under the condition that the state information indicates that the main loop of the energy storage system is in the first state, the first control module controls the first loop to be in a conducting state, so that the disconnection execution module can receive the first control signal, the disconnection execution module can open or close the main loop of the energy storage system according to the first control signal, and the purposes of power-on, power-off and maintenance of the main loop of the energy storage system are guaranteed. Meanwhile, under the condition that the state information indicates that the main loop of the energy storage system is in the second state, the first control module controls the first loop to be in the disconnected state, at the moment, the disconnection execution module cannot receive the first control signal, even if the control device generates or receives the first control signal, the first control signal cannot be input into the disconnection execution module, namely, the disconnection execution module cannot control the opening or closing of the main loop of the energy storage system, and therefore the situation that the main loop of the energy storage system is not required to be opened or closed due to the fact that the first control signal is generated or received by mistake under the condition that the main loop of the energy storage system is in the second state can be avoided, the main loop of the energy storage system is opened or closed, and the reliability of the energy storage system is improved.

Referring to fig. 1, a control apparatus provided in an embodiment of the present disclosure is shown, where the control apparatus may be applied to an energy storage system, and as shown in fig. 1, the control apparatus may include a disconnection performing module 100, a first control module 200, and a first loop 300.

Specifically, the disconnection performing module 100 is connected to the energy storage system main circuit 400 and the first circuit 300, respectively, and the first control module 200 is connected to the energy storage system main circuit 400 and the first circuit 300, respectively. The first loop 300 is configured to output a first control signal to the disconnection performing module 100, the disconnection performing module 100 is configured to disconnect or close the energy storage system main loop 400 according to the first control signal, and the first control module 200 is configured to obtain state information of the energy storage system main loop 400, and control the first loop 300 to be in a conducting state under the condition that the state information indicates that the energy storage system main loop 400 is in the first state, so that the first loop 300 outputs the first control signal to the disconnection performing module 100. The first control module 200 is further configured to control the first circuit 300 to be in the disconnected state under the condition that the state information indicates that the energy storage system main circuit 400 is in the second state, so that the first circuit 300 cannot output the first control signal to the disconnection performing module 100. The first state comprises a standby abnormal state and an abnormal state, and the second state is different from the first state. In an optional embodiment, the first state includes two states, one is that the main loop of the energy storage system is in a standby state and no abnormal condition exists, and the other is that an abnormal condition exists, and the second state includes that the main loop of the energy storage system is in an abnormal condition and running state.

It should be noted that the first loop 300 may generate the first control signal (e.g., the first loop 300 includes a device that may generate the first control signal) or may receive the first control signal. The disconnection performing module 100 may be used to close or open the energy storage system main circuit 400 in case of need for maintenance (e.g., repair or overhaul) or emergency of the energy storage system main circuit 400. Turning off the energy storage system primary circuit 400 may include turning off the current of the energy storage system primary circuit 400, and turning on the energy storage system primary circuit 400 may include turning on the circuitry of the energy storage system primary circuit 400. The energy storage system main circuit 400 is an energy storage system working circuit (a power supply circuit or a charging circuit), that is, a circuit formed by an energy storage device and a load (a power utilization device or a power generation device) of the energy storage system. During the power-up process of the energy storage system main circuit 400, the energy storage converter (PCS) of the energy storage system main circuit 400 is in a standby state, and the energy storage system main circuit 400 is in a no-voltage state. When the energy storage system main loop 400 is in a power-off process, the energy storage converter receives a power-off command and enters a standby state, and at the moment, the energy storage system main loop 400 is in a no-voltage state, so that whether the energy storage system main loop is in the standby state can be judged according to the voltage of the energy storage system main loop. It can be understood that the energy storage converter can be used to control the charging and discharging of the energy storage device of the energy storage system main loop 400, and can also realize the conversion of ac and dc. The abnormality of the energy storage system primary circuit 400 may include, but is not limited to, an overcurrent, an overvoltage, or an overheating of an energy storage device (e.g., a battery) of the energy storage system primary circuit 400. The second state is different from the first state, and the second state is a state in which the on/off of the energy storage system main circuit 400 is not controlled by the disconnection performing module 100. For example, the second state is an abnormal-free and operating state (the energy storage system main circuit 400 is a state in which the energy storage system main circuit 400 normally provides the energy), that is, the first control module 200 controls the first circuit 300 to be in the disconnected state under the condition that the state information indicates that the energy storage system main circuit 400 is the abnormal-free and operating state, at this time, even if the first circuit 300 generates or receives the first control signal, the first control signal cannot be output to the disconnection performing module 100, so that it is ensured that the energy storage system main circuit 400 is not closed due to the disconnection performing module 100 in the normal operating state.

In the control apparatus provided in this embodiment of the present application, the first control module 200 may control the first loop 300 to be in the conducting state under the condition that the state information indicates that the energy storage system main loop 400 is in the first state, so that the first loop 300 may output the first control signal to the disconnection performing module 100, so that the disconnection performing module 100 may open or close the energy storage system main loop 400 according to the first control signal, thereby ensuring that the energy storage system main loop 400 can still normally complete powering on and powering off after the disconnection performing module 100 is added, and achieving the purpose of repairing the energy storage system main loop 400. Meanwhile, the first control module 200 may also control the first circuit 300 to be in the off state under the condition that the state information indicates that the energy storage system main loop 400 is in the second state, and at this time, the first circuit 300 cannot output the first control signal to the on-off execution module 100, that is, the on-off execution module 100 cannot obtain the first control signal, so that it may be avoided that the energy storage system main loop 400 is opened or closed under the condition that the energy storage system main loop 400 is in the second state because the control device generates or receives the first control signal by mistake, which improves the reliability of the energy storage system main loop 400.

In one embodiment, the disconnection performing module 100 may include a control unit and a disconnection unit. Specifically, the switching unit is connected in series to the working circuit of the main circuit 400 of the energy storage system, and the control unit is connected to the switching unit and the first circuit 300, respectively. The energy storage system main circuit 400 includes an energy storage device, which may be used to provide electric energy to a power consumption device or store electric energy of a power generation device. Illustratively, the energy storage device may comprise a battery. The working circuits of the main circuit 400 of the energy storage system in this embodiment are a circuit formed by the energy storage device and the electric equipment, and a circuit formed by the energy storage device and the power generation equipment. The control unit is configured to control the switch unit to be in a closed state or an open state according to the first control signal, so as to open or close the energy storage system main circuit 400 according to the first control signal.

Referring to fig. 2, a first control module provided in an embodiment of the present application is shown, and as shown in fig. 2, the first control module may include a switch unit 210 and a first chip 220.

Specifically, the switch unit 210 is connected in series to the first circuit 300, and the first chip 220 is connected to the energy storage system main circuit 400 and the switch unit 210, respectively. The first chip 220 may be configured to obtain state information of the energy storage system main loop 400, and control the switch unit 210 to be in a closed state when the state information indicates that the energy storage system main loop 400 is in the first state. The first chip 220 may be further configured to control the switch unit 210 to be in the open state if the state information indicates that the energy storage system main loop 400 is in the second state.

It should be noted that the switch unit 210 may include a closed state and an open state, and since the switch unit 210 is connected in series to the first loop 300, when the switch unit 210 is in the open state, a break point exists in the first loop 300. It can be understood that, in the case that the first loop 300 is configured to receive the first control signal, that is, in the case that the first loop 300 includes an input point of the first control signal, the switch unit 210 is connected in series between the input point of the first control signal and the on/off execution module 100, so that the first control signal cannot be input to the on/off execution module 100 when the switch unit 210 is in the off state. Similarly, when the first loop 300 is used to generate the first control signal, that is, when the first loop 300 includes a generating point of the first control signal, the switch unit 210 is connected in series between the generating point of the first control signal and the on-off execution module 100, so that the first control signal cannot be input to the on-off execution module 100 when the switch unit 210 is in an off state.

The above embodiment provides a structure of a first control module, where the first control module includes a switch unit 210 connected in series to the first loop 300 and a first chip 220 connected to the switch unit 210 and the energy storage system main loop 400, the first chip 220 may be configured to obtain state information of the energy storage system main loop 400, and control a state (a closed state or an open state) of the switch unit 210 according to the state information, that is, control a state (a conductive state or an open state) of the first loop 300, and the first control module has a simple structure and may effectively implement a function of controlling the state of the first loop 300 according to the state information.

In an alternative embodiment, the first chip 220 may be a Battery Management System (BMS). In this embodiment, an existing battery management system in the energy storage system is used as the first chip 220, the battery management system detects the state information of the main circuit 400 of the energy storage system, and the battery management system can control the switch unit 210 according to the state information without additionally providing a controller, thereby reducing the cost and size of the control device. Optionally, a current sensor is disposed in the energy storage system main loop 400, and the BMS is connected to the current sensor and is configured to acquire the current of the energy storage system main loop 400 detected by the current sensor and determine the state information of the energy storage system main loop 400 according to the current. Optionally, under the condition that the energy storage device is a storage battery, the BMS determines the state of the battery cell through CAN, 485 or daisy chain communication among the multi-level BMS so as to monitor whether the main circuit is abnormal. Alternatively, the switching unit may be a DO port relay or a switching tube of the BMS.

According to the above description, the disconnection performing module may be in the closed state or the open state under the control of the remote control signal or the local control signal, but in the case that the disconnection performing module can simultaneously acquire the remote control signal or the local control signal, a safety accident may occur. Such as: thereby the maintenance personal closes the energy storage system major loop through the on-the-spot equipment control of energy storage system and opens and carry out the module, but backstage personnel can't learn that the maintenance personal is maintaining the energy storage system major loop, and backstage personnel may open the execution module through main control unit or remote scheduling equipment control and open in order to open the energy storage system major loop this moment, just this moment may cause potential safety hazards such as maintenance personal electrocution. In view of the above, referring to fig. 3, the present disclosure provides a control apparatus, where the first loop of the control apparatus may include a signal switching module 310, and the signal switching module 310 may selectively output one of a local control signal and a remote control signal, so as to improve the safety of the energy storage system.

Specifically, as shown IN fig. 3, the output terminal OUT1 of the signal switching module 310 is connected to the first terminal IN1 of the switch unit 210, and the second terminal OUT2 of the switch unit 210 is connected to the disconnection performing module 100. By providing the signal switch module 310 in the first loop, when the local control signal and the remote control signal are both inputted to the signal switch module 310, the signal switch module 310 selectively outputs one of the local control signal and the remote control signal from the output terminal OUT1 of the signal switch module 310, i.e. the disconnection performing module 100 only receives one of the local control signal and the remote control signal. It should be noted that the switch unit 210, the first chip 220 and the disconnection performing module 100 of the control device are described in detail in the above embodiments, and are not described herein again.

IN one embodiment, the signal switch module 310 includes a first input terminal IN2 and a second input terminal IN3, the first input terminal IN2 of the signal switch module 310 is configured to receive the remote control signal, the second input terminal IN3 of the signal switch module 310 is configured to receive the local control signal, and the signal switch module 310 can selectively turn on the first input terminal IN2 of the signal switch module 310 and the output terminal OUT1 of the signal switch module 310, or selectively turn on the second input terminal IN3 of the signal switch module 310 and the output terminal OUT1 of the signal switch module 310. The signal switching module 310 may include a first mode and a second mode, IN which the signal switching module 310 turns on the first input terminal IN2 of the signal switching module 310 and the output terminal OUT1 of the signal switching module 310 and turns off the second input terminal IN3 of the signal switching module 310 and the output terminal OUT1 of the signal switching module 310 when the signal switching module 310 is IN the first mode, and IN which the signal switching module 310 turns on the second input terminal IN3 of the signal switching module 310 and the output terminal OUT1 of the signal switching module 310 and turns off the first input terminal IN2 of the signal switching module 310 and the output terminal OUT1 of the signal switching module 310 when the signal switching module 310 is IN the second mode, so that the signal switching module 310 may selectively output a local control signal or a local control signal. It should be noted that the above-mentioned embodiment is only one possible way of the signal switching module 310, and the present embodiment does not specifically limit the structure of the signal switching module 310, as long as the function of selectively outputting the local control signal or the remote control signal can be realized.

It should be noted that the signal switching module 310 may selectively output the local control signal and may also selectively output the remote control signal. Alternatively, the signal switching module 310 can switch between the first mode and the second mode. In one embodiment, the signal switching module 310 may further include an operation unit, which may switch the mode of the signal switching module 310 in response to the switching operation. The worker can freely select the mode of the signal switching module 310 by operating (switching) the operation unit, thereby improving the flexibility of the control device and the safety of the energy storage system main circuit 400.

Referring to fig. 4, a control apparatus according to an embodiment of the present disclosure is shown, where the first loop of the control apparatus may further include a second control module 320.

Specifically, as shown in fig. 4, the second control module 320 is respectively connected to the position terminal of the signal switching module 310 and the energy storage system main loop 400. The second control module 320 may be configured to obtain the location information of the signal switching module 310, and control the mode of the energy storage system main loop 400 to be the local control mode if the location information of the signal switching module 310 indicates that the signal switching module 310 is configured to output the local control signal, and control the mode of the energy storage system main loop 400 to be the remote control mode if the location information of the signal switching module 310 indicates that the signal switching module 310 is configured to output the remote control signal. It should be noted that the first control module, the disconnection performing module 100 and the signal switching module 310 of the control apparatus are described in detail in the above embodiments, and are not described herein again.

It should be noted that the signal switching module 310 may further include a position end, and the second control module 320 may determine the position information of the signal switching module 310 through the position end of the signal switching module 310. Alternatively, in a case where the signal switching module 310 is configured to output the local control signal, the position terminal of the signal switching module 310 may output a first level signal, and in a case where the signal switching module 310 is configured to output the remote control signal, the position terminal of the signal switching module 310 may output a second level signal, where the levels of the first level signal and the second level signal are different, so that the second control module 320 may determine whether the signal switching module 310 is configured to output the local control signal or the remote control signal by determining whether the level signal output by the position terminal of the signal switching module 310 is the first level signal or the second level signal. Optionally, one of the first level signal and the second level signal is a high level signal, and the other of the first level signal and the second level signal is a low level signal. In this embodiment, the level signal is position information.

It should be noted that the local control mode and the remote control mode of the energy storage system main circuit 400 are different modes. Controlling the mode of the energy storage system primary circuit 400 to be the in-situ control mode may be understood as controlling the energy storage system primary circuit 400 to operate according to the content of the in-situ control mode. The mode of controlling the energy storage system main loop 400 is a remote control mode, which can be understood as controlling the energy storage system main loop 400 to operate according to the content of the remote control mode. Illustratively, the energy storage converter is self-activated when the energy storage system primary circuit 400 is in the remote control mode, and is not allowed to self-activate when the energy storage system primary circuit 400 is in the local control mode. The present embodiment does not limit the specific contents of the local control mode and the remote control mode of the energy storage system main loop 400, and the specific contents of the local control mode and the remote control mode of the energy storage system main loop 400 may be set according to the requirement.

The second control module 320 provided in this embodiment is connected to the signal switching module 310, and the second control module 320 may obtain and control the mode of the energy storage system main loop 400 according to the position information of the signal switching module 310, so that the mode of the energy storage system main loop 400 is consistent with the position information of the signal switching module 310.

With reference to fig. 4, the second control module 320 can be further connected to the first input terminal IN2 of the signal switching module 310. It should be noted that the description of the first input terminal IN2 of the signal switching module 310 refers to the above embodiments, and is not repeated herein. The second control module 320 may be further configured to input a remote control signal to the first input terminal IN2 of the signal switching module 310 IN response to a remote control operation. Alternatively, the remote control signal may include a remote closing signal or a remote opening signal. The remote switch-on signal is used to instruct the switching-off execution module 100 to open the main circuit 400 of the energy storage system, and the remote switch-off signal is used to instruct the switching-off execution module 100 to close the main circuit 400 of the energy storage system.

In an alternative embodiment, the second control module 320 may further comprise an input device, through which the operator may instruct the second control module 320 to input the remote control signal to the first input of the signal switching module 310. The input device may include, but is not limited to, a touch screen, a keyboard, or a mouse, and in this embodiment, the input operation of the worker through the input device is a remote control operation. It is understood that, in this embodiment, the second control module 320 may generate the remote control signal, that is, the first loop circuit may generate the first control signal, so that the switch unit 210 is disposed between the second control module 320 and the switch-off execution module 100. Optionally, the switch unit 210 is disposed between the signal switching module 310 and the disconnection performing module 100.

Referring to fig. 5, the energy storage system primary circuit 400 may include an energy storage converter 410. As shown in fig. 5, the second control module 320 is further connected to the first chip 220, the energy storage converter 410 and the switch unit 210, respectively. Specifically, the second control module 320 may be further configured to obtain operation information of the energy storage converter 410, first information reported by the first chip 220, and a position signal of the signal switching module 310, and output a far earth closing signal when the first condition is met. Optionally, the second control module 320 may be further configured to output a remote tripping signal when the second condition is satisfied. The first condition includes that the operation information indicates that the energy storage converter 410 is in a standby state, the position information indicates that the signal switching module 310 is configured to output the remote control signal, and the first information indicates that the switch unit 210 is in a closed state, and the energy storage system main circuit 400 is in a power-on process. The second condition includes that the operation information indicates that the energy storage converter 410 is in a standby state, and the position information indicates that the signal switching module 310 is configured to output the remote control signal, the first information indicates that the switch unit 210 is in a closed state, and the energy storage system main circuit 400 is in a power-down process.

It should be noted that the second control module 320 may be used to determine whether the energy storage system primary circuit 400 is in a power-up process, or the second control module 320 may be used to determine whether the energy storage system primary circuit 400 is in a power-down process. For example, when the energy storage system main circuit 400 needs to be powered up, the second control module 320 may receive a power-up command, and thus the second control module 320 may determine whether the energy storage system main circuit 400 is in a power-up process according to the power-up command. For example, when the energy storage system main circuit 400 needs to be powered down, the second control module 320 may receive a power-down command, and at this time, the second control module 320 may determine whether the energy storage system main circuit 400 is in a power-down process according to the power-up command.

It should be noted that the second control module 320 determines whether the switching unit 210 is in the closed state according to the first information, and outputs the remote closing signal or the remote opening signal when the switching unit 210 is in the closed state, so as to ensure that the remote closing signal or the remote opening signal can be input to the opening and closing execution module 100, thereby ensuring the validity. The standby state of the energy storage converter 410 may be considered as the power of the energy storage converter 410 is 0. The second control module 320 may determine whether the energy storage converter 410 is in a standby state according to the operation information of the energy storage converter 410. Optionally, the operation information of the energy storage converter 410 is actively reported to the second control module 320 by the energy storage converter 410. When the energy storage system main loop 400 is powered off and the power of the converter 410 to be stored is reduced to 0, the second control module 320 outputs a remote opening signal, so that a fault caused by sudden power failure of the energy storage system main loop 400 under the condition that the power is still available can be avoided.

It should be noted that, under the condition that the position information indicating signal switching module 310 is configured to output the remote control signal, that is, the mode of the energy storage system main circuit 400 is indicated to be the remote control mode, in this condition, it may be determined whether the first condition or the second condition is met by the second control module 320, and a remote switch-on signal or a remote switch-off signal is correspondingly output, so that the energy storage system main circuit 400 automatically completes power on and power off, without manual operation, and automation and intellectualization of the energy storage system main circuit 400 are improved. In an alternative embodiment, when the location information indicates that the signal switching module 310 is used to output the local control signal, the second control module 320 does not output the remote control signal, and the status of the disconnection performing module 100 is controlled by the local control signal.

In an alternative embodiment, the second control module 320 may be an Energy Management System (EMS) of the energy storage system. The embodiment utilizes the existing energy management system in the energy storage system as the second control module 320, realizes the function of the second control module 320, does not need to additionally set a controller, and reduces the cost and the volume of the control device. In the case where the first chip 220 is a BMS, the energy management system communicates with the BMS through a LAN, 485, or CAN, and the energy management system communicates with the PCS through a LAN, 485, or CAN. The dry contact input DI port of the EMS is connected to the position terminal of the signal switching module 310 to obtain the position information.

As can be seen from the above description, when the energy storage system main circuit 400 is in the power-on process or the power-off process, the switch unit 210 is in the closed state to output the remote switch-on signal or the remote switch-off signal to the switch-off execution module 100. In an optional embodiment, after the first chip 220 controls the switch unit 210 to be closed, the first chip 220 may be further configured to determine whether a third condition is satisfied, and in a case that the third condition is satisfied, control the switch unit 210 to be in an open state. Alternatively, the third condition may include the switching unit 210 being in a closed state for a preset time period. The worker may automatically control the switching unit 210 to be turned off by setting a preset time period when the switching unit 210 is turned on for the preset time period. Optionally, the third condition may include the execution module 100 being disconnected to complete the opening or closing of the energy storage system main circuit 400. It can be understood that the switch unit 210 is closed to control the disconnection performing module 100 to control to open or close the energy storage system main circuit 400, so that after the energy storage system main circuit 400 is completely opened or closed, the switch unit 210 is controlled to be in an open state, and the reliability of the energy storage system main circuit 400 is ensured.

Referring to fig. 5, the energy storage system main circuit 400 may include a dc circuit 420 and an ac circuit 430, that is, the working circuit of the energy storage system main circuit 400 may include the dc circuit 420 and the ac circuit 430, and the disconnection performing module 100 is connected to the dc circuit 420 and configured to control the connection and disconnection of the dc circuit 420 according to a first control signal, so as to turn on or off the energy storage system main circuit 400. The status information of the energy storage system main loop 400 includes the dc loop information of the dc loop 420. The first chip 220 is connected to the dc circuit 420 and the switch unit 210. The first chip 220 is configured to obtain dc loop information of the dc loop 420, and control the switch unit 210 to be in a closed state when the dc loop information indicates that the energy storage system main loop 400 is in the first state. The first chip 220 is further configured to control the switch unit 210 to be in the off state if the dc loop information indicates that the energy storage system main loop 400 is in the second state.

It should be noted that, according to the above description, the energy storage converter 410 can realize ac/dc conversion, and hereinafter, the dc circuit 420 and the ac circuit 430 will be described by taking a power supply of the energy storage system main circuit 400 as an example of a storage battery. The energy storage converter 410 includes a dc terminal for inputting or outputting dc power and an ac terminal for inputting or outputting ac power. The circuit between the dc terminal of the energy storage converter 410 and the battery is the dc circuit 420 according to the above embodiment, and the circuit between the ac terminal of the energy storage converter 410 and the power consumption device or power generation device of the energy storage ac is the ac circuit 430 according to the above embodiment.

Please refer to fig. 6, which illustrates a control device according to an embodiment of the present application. The first loop of control devices provided by this embodiment may also include an in-situ control module 330.

Specifically, as shown IN fig. 6, the local control module 330 is connected to the second input terminal IN3 of the signal switching module 310. The in-situ control module 330 may be configured to output an in-situ control signal in response to an in-situ control operation. The local control signal may include a local opening signal and a local closing signal. The local closing signal is used to instruct the disconnection performing module 100 to open the energy storage system main circuit 400, and the remote opening signal is used to instruct the disconnection performing module 100 to close the energy storage system main circuit 400. It should be noted that the first control module, the disconnection performing module 100 and the signal switching module 310 of the control apparatus are described in detail in the above embodiments, and are not described herein again.

In an alternative embodiment, the local control module 330 may include a local closing button unit and a local opening button unit, and the local control operation includes a first key operation on the local closing button unit and a second key operation on the local opening button unit. The on-site closing button unit comprises a first button and an on-site closing chip connected with the first button, and when the first button is pressed, the on-site closing chip outputs an on-site closing signal. Illustratively, the local opening button unit comprises a second button and a local opening chip connected with the second button, and the local opening chip outputs a local opening signal when the second button is pressed. The local closing signal or the local opening signal is inputted to the breaking executing module 100 through the signal switching module and the switch unit.

Please refer to fig. 7, which illustrates a control apparatus according to an embodiment of the present application. As shown in fig. 7, the local control device may include a control power source 331, a local closing unit 332, a local opening unit 333, a signal switching module 310, a switching unit 210, an opening performing module, an EMS321, and a BMS221. The main tank circuit may include PCS410, dc 420, ac 430, and energy storage device 440. The control power 331 may include a first output terminal and a second output terminal, the signal switching module 310 may include a first switch K1, a second switch K2, a third switch K3 and a fourth switch K4, the switch unit 210 may include a seventh switch K7 and an eighth switch K8, the turn-off performing module may include the control unit 110 and the turn-off unit 120, the turn-off unit 120 may include a fifth switch K5 and a sixth switch K6, the control unit 110 may include a first terminal and a second terminal, and the EMS321 may include a first output terminal and a second output terminal. Alternatively, the seventh switch K7 and the eighth switch K8 may be relays or switching tubes of the BMS321DO port.

Specifically, the fifth switch K5 is connected in series to the positive branch of the dc loop 420, and the sixth switch K6 is connected in series to the negative branch of the dc loop 420. It should be noted that EMS321 is connected to BMS221, PCS410 and signal switching module 310, BMS221 is connected to switch unit 210, PCS410 and dc circuit 420, EMS321 can be used to perform the function of the second control module in the above embodiments, and BMS221 can be used to perform the function of the first chip in the above embodiments, which are not described herein again. In one embodiment, the control device may further include a current sensor 510, the current sensor 510 is disposed on a negative branch of the dc loop 420, and the BMS221 is connected to the current sensor 510 to determine the current of the dc loop 420 through the current sensor 510.

Specifically, a first output terminal of the control power source 331 is connected to the local closing unit 332, and a second output terminal of the control power source 331 is connected to the local opening unit 333. The first output terminal is used for outputting an in-situ closing signal, the second output terminal is used for outputting an in-situ opening signal, and after the in-situ closing unit 332 is operated (for example, a button of the in-situ closing unit is pressed), the in-situ closing signal is input to the first terminal of the control unit 110 through the first switch K1 and the seventh switch K7. After the local opening unit 333 is operated, the local opening signal is input to the second terminal of the control unit 110 through the second switch K2 and the eighth switch K8. A first output of the EMS321 is used to output a remote closing signal from a first output of the EMS321 or a remote opening signal from a second output of the EMS321 in response to a remote control operation. The far-earth switching-on signal is input to the first end of the control unit 110 through the third switch K3 and the seventh switch K7, and the far-earth switching-off signal is input to the second end of the control unit 110 through the fourth switch K4 and the eighth switch K8. The control unit 110 controls the opening unit 120 to be in a closed state, that is, controls the fifth switch K5 and the sixth switch K6 to be closed, when receiving the local closing signal or the remote closing signal. The control unit 110 controls the opening unit 120 to be in an open state, that is, controls the fifth switch K5 and the sixth switch K6 to be opened, when receiving the local opening signal or the remote opening signal.

In the case where the signal switching module 310 is used to output the local control signal, the first switch K1 and the second switch K2 are closed, and the third switch K3 and the fourth switch K4 are opened, whereas in the case where the signal switching module 310 is used to output the remote control signal, the first switch K1 and the second switch K2 are opened, and the third switch K3 and the fourth switch K4 are closed. When the switching unit 210 is in the closed state, the ninth switch K9 and the tenth switch K10 are closed, and when the switching unit 210 is in the open state, the ninth switch K9 and the tenth switch K10 are open.

With reference to fig. 7, the disconnection performing module may further include an auxiliary unit 130, the auxiliary unit 130 may include a ninth switch K9 and a tenth switch K10, the ninth switch K9 is connected in series between the seventh switch K7 and the first end of the control unit 110, and the tenth switch K10 is connected in series between the eighth switch K8 and the second end of the control unit 110. When the opening unit 120 is in the closed state, the ninth switch K9 is opened and the tenth switch K10 is closed, and when the opening unit 120 is in the open state, the ninth switch K9 is closed and the tenth switch K10 is opened. Since the ninth switch K9 is in a state opposite to that of the opening unit 120, and the tenth switch K10 is in a state identical to that of the opening unit 120, it can be ensured that the remote closing signal or the local closing signal cannot be input to the control unit 110, and the remote opening signal or the local opening signal can be input to the control unit 110 when the opening unit 120 is in a closed state; when the disconnecting unit 120 is in the disconnected state, a remote closing signal or an in-situ closing signal may be input to the control unit 110, and a remote opening signal or an in-situ opening signal may not be input to the control unit 110, so that the accuracy of the control unit 110 in controlling the disconnecting unit 120 is improved.

With continued reference to fig. 7, the main circuit of the energy storage system may further include a positive fuse 521, a negative fuse 522, a positive relay 531 and a negative relay 532, the positive fuse 521 and the positive relay 531 are connected in series to the positive branch of the dc circuit 420, and the negative fuse 522 and the negative relay 532 are connected in series to the negative branch of the dc circuit 420, for disconnecting the dc circuit of the main circuit of the energy storage system to protect the main circuit of the energy storage system in case of a fault.

With continued reference to fig. 7, the energy storage system main circuit may further include a pre-charge resistor 541 and a pre-charge relay 542, wherein the pre-charge relay 542 is connected in series with the pre-charge resistor 541 to form a series branch, and the series branch is connected in parallel with the main positive relay 531.

Please refer to fig. 8, which illustrates a control method according to an embodiment of the present disclosure, the control method may be applied to a control apparatus of an energy storage system, the control apparatus may include a disconnection performing module and a first loop, the disconnection performing module is respectively connected to an energy storage system main loop and the first loop, the first loop is configured to output a first control signal to the disconnection performing module, and the disconnection performing module is configured to open or close the energy storage system main loop according to the first control signal. The detailed description of the disconnection performing module, the first loop, and the main loop of the energy storage system is omitted here for brevity. As shown in fig. 8, the control method may include steps S802 to S806.

And S802, acquiring the state information of the main loop of the energy storage system.

S804, under the condition that the state information indicates that the main loop of the energy storage system is in the first state, controlling the first loop to be in a conducting state, so that the first loop outputs a first control signal to the open/close execution module.

The first state comprises a standby abnormal state and an abnormal state. In an alternative embodiment, the control device may further comprise a switching unit connected in series to the first circuit. The step of controlling the first loop to be in a conducting state may include: the switch unit is controlled to be in a closed state.

S806, when the state information indicates that the main circuit of the energy storage system is in the second state, the first circuit is controlled to be in a disconnected state, so that the first circuit cannot output the first control signal to the disconnection performing module.

Wherein the second state is different from the first state. In an alternative embodiment, the control device may further comprise a switching unit connected in series to the first circuit. The step of controlling the first circuit to be in a disconnected state may include: the switch unit is controlled to be in an off state.

Referring to fig. 9, in an alternative embodiment, the first loop may include a signal switching module, and the first control signal may include a local control signal and a remote control signal. The control method may further include step S902 to step S906.

S902, acquiring the position information of the signal switching module.

And S904, under the condition that the position information of the signal switching module indicates that the signal switching module is used for outputting the local control signal, controlling the mode of the main loop of the energy storage system to be a local control mode.

And S906, under the condition that the position information of the signal switching module indicates that the signal switching module is used for outputting the remote control signal, controlling the mode of the main loop of the energy storage system to be a remote control mode.

In an optional embodiment, the method for controlling the main loop of the energy storage system may further include: and responding to the remote control operation, and inputting a remote control signal to the first input end of the signal switching module. The remote control signal may include a remote closing signal or a remote opening signal.

Referring to fig. 10, in an alternative embodiment, the energy storage system main circuit may include an energy storage converter, and the control method may further include steps S1002 to S1004.

Step S1002, obtaining operation information of the energy storage converter, first information and position information of the signal switching module.

In step S1004, when the first condition is satisfied, a remote closing signal is output.

The first condition comprises that the operation information indicates that the energy storage converter is in a standby state, the position information indication signal switching module is used for outputting a remote control signal, the first information indicates that the switch unit is in a closed state, and the energy storage system is in a power-on process.

With continued reference to fig. 10, in an alternative embodiment, the control method may further include step S1006.

In step S1006, when the second condition is satisfied, the remote opening signal is output.

The second condition comprises that the operation information indicates that the energy storage converter is in a standby state, the position information indicates that the signal switching module is used for outputting a remote control signal, the first information indicates that the switch unit is in a closed state, and the energy storage system is in a power-off process.

The embodiment of the application discloses a computer readable storage medium, which stores a computer program, wherein when the computer program is executed by a processor, the processor is enabled to realize any one of the control methods disclosed in the embodiment of the application.

The embodiment of the application further discloses an energy storage system which comprises any one of the control devices disclosed in the embodiment of the application.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.

In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The integrated units, if implemented as software functional units and sold or used as a stand-alone product, may be stored in a computer accessible memory. Based on such understanding, the technical solution of the present application, which is a part of or contributes to the prior art in essence, or all or part of the technical solution, may be embodied in the form of a software product, stored in a memory, including several requests for causing a computer device (which may be a personal computer, a server, a network device, or the like, and may specifically be a processor in the computer device) to execute part or all of the steps of the above-described method of the embodiments of the present application.

It will be understood by those skilled in the art that all or part of the steps of the methods of the embodiments described above may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, including Read-Only Memory (ROM), random Access Memory (RAM), programmable Read-Only Memory (PROM), erasable Programmable Read-Only Memory (EPROM), one-time Programmable Read-Only Memory (OTPROM), electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc-Read-Only Memory (CD-ROM) or other Memory capable of storing data, a magnetic tape, or any other computer-readable medium capable of storing data.

The energy storage system, the control method, the control device and the storage medium thereof disclosed in the embodiments of the present application are described above in detail, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the embodiments above is only used to help understand the method and the core idea of the present application. Meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A control device is applied to an energy storage system and is characterized by comprising: a cut-off execution module, a first control module and a first loop, wherein the cut-off execution module is respectively connected with the energy storage system main loop and the first loop, the first control module is respectively connected with the energy storage system main loop and the first loop,

the disconnection execution module is used for opening or closing the energy storage system main loop according to the first control signal;

2. The control apparatus according to claim 1, wherein the first control module includes:

a switch unit connected in series to the first circuit;

the first chip is respectively connected with the main loop of the energy storage system and the switch unit and is used for acquiring state information of the main loop of the energy storage system and controlling the switch unit to be in a closed state under the condition that the state information indicates that the main loop of the energy storage system is in a first state; and under the condition that the state information indicates that the main loop of the energy storage system is in a second state, controlling the switch unit to be in an off state.

3. The control device of claim 2, wherein the first control signal comprises a local control signal and a remote control signal, the first loop comprises a signal switching module, an output terminal of the signal switching module is connected to a first terminal of the switch unit, a second terminal of the switch unit is connected to the disconnection performing module, and the signal switching module selectively outputs the local control signal or the remote control signal.

4. The control device according to claim 3, wherein the first loop further comprises a second control module, which is respectively connected to the position end of the signal switching module and the energy storage system main loop, and is configured to obtain the position information of the signal switching module, and control the mode of the energy storage system main loop to be an on-site control mode if the position information of the signal switching module indicates that the signal switching module is configured to output the on-site control signal; and under the condition that the position information of the signal switching module indicates that the signal switching module is used for outputting the remote control signal, controlling the mode of the main loop of the energy storage system to be a remote control mode.

5. The control device of claim 4, wherein the second control module is connected to the first input of the signal switching module and further configured to input the remote control signal to the first input of the signal switching module in response to a remote control operation, and the remote control signal comprises a remote closing signal or a remote opening signal.

6. The control device according to claim 5, wherein the energy storage system main loop comprises an energy storage converter, and the second control module is respectively connected with the first chip and the energy storage converter; the second control module is further configured to acquire operation information of the energy storage converter and first information reported by the first chip, and output the remote switch-on signal when a first condition is met;

the first condition comprises that the operation information indicates that the energy storage converter is in a standby state, the position information indicates that the signal switching module is used for outputting the remote control signal, the first information indicates that the switch unit is in a closed state, and the main loop of the energy storage system is in a power-on process.

7. The control device of claim 5, wherein the energy storage system main loop comprises an energy storage converter, and the second control module is respectively connected with the energy storage converter and the first chip; the second control module is further configured to acquire operation information of the energy storage converter and first information reported by the first chip, and output the remote opening signal when a second condition is met;

8. The control apparatus of claim 3, wherein the first loop further comprises a local control module connected to the second input of the signal switching module, the local control module configured to output the local control signal in response to a local control operation, the local control signal comprising a local open signal and a local close signal.

9. The control method is characterized by being applied to a control device of an energy storage system, wherein the control device comprises a cut-off execution module and a first loop, the cut-off execution module is respectively connected with a main loop of the energy storage system and the first loop, the first loop is used for outputting a first control signal to the cut-off execution module, and the cut-off execution module is used for opening or closing the main loop of the energy storage system according to the first control signal; the control method comprises the following steps:

acquiring state information of a main loop of the energy storage system;

10. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out the control method according to claim 9.

11. An energy storage system, characterized by comprising a control device according to any one of claims 1 to 8.