A control method for a multi-channel container energy storage system

Abstract

The present invention belongs to the field of application technology of electrochemical battery energy storage system, and specifically relates to a multi-channel container energy storage system architecture and its operation control method. The method of arranging the energy storage battery placement bracket along the length direction of the container, which breaks the industry's habit, adopts an innovative short-distance horizontal layout to install the battery string bracket, which greatly improves the installation efficiency. At the same time, through the hot temperature difference control mode and the cold temperature difference control mode regulation and energy-saving temperature regulation control strategy, as well as the reasonably designed and installed refrigeration, heating, exhaust fan, internal circulation fan and sand-proof ventilation window; the exhaust fan and the sand-proof ventilation window are not opened on the same channel, so that the ventilation intake passes through the battery bracket and then is discharged, which not only greatly improves the temperature regulation efficiency, is conducive to the temperature and humidity consistency regulation, and saves energy consumption in the operation and maintenance of the energy storage system; it also effectively guarantees the operating environment of the battery, which is conducive to increasing the operating life of the battery and improving safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrochemical energy storage application, and in particular relates to a control method for a multi-channel container energy storage system. Background Art

[0002] Large-scale energy storage systems are being widely used in commercial scenarios such as peak-shaving and frequency regulation, peak shaving and valley filling, smoothing of new energy fluctuations, power emergency, and grid stability regulation. The technical challenges of large-scale electrochemical energy storage applications are also obvious; in particular, battery safety is facing great pressure, and a large number of battery cells are connected and operated. In particular, the characteristics of lithium batteries prove that temperature and humidity control is one of the important factors affecting battery consistency and life.

[0003] Large-scale energy storage systems usually use container chambers for system integration in order to facilitate installation, effectively achieve temperature and humidity control, effectively isolate the risk of poor battery consistency caused by inconsistent temperature, and provide better safety. As we all know, the length of the commonly used container for energy storage is 12 meters, which is more than 5 times the width. There are double doors on both sides of the length. The battery brackets are placed on both sides along the length. The battery installation operation is carried out through a single 12-meter channel. Not only is it very inconvenient to carry and install, it affects the installation efficiency and increases the labor intensity; moreover, in order not to affect the placement of the battery, the temperature control equipment is usually placed on both sides of the 12-meter single-length channel. By adding air ducts to improve the temperature control effect, it not only increases the difficulty of consistency control design and operation management, but also increases investment and operation energy consumption. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a control method for a multi-channel container energy storage system, wherein the multi-channel container energy storage system comprises: a dedicated energy storage container, a first channel, a second channel, an Nth channel, a left door of the first channel, a right door of the first channel, a left door of the second channel, a right door of the second channel, a left door of the Nth channel, a right door of the Nth channel, a first side door, a second side door, a first battery bracket, a second battery bracket, an Nth battery bracket, an equipment partition, an energy storage DC bus control cabinet, a fire protection system, and a container integrated control box; wherein:

[0005] The energy storage batteries are installed in a horizontal arrangement in the special energy storage container with the first battery bracket, the second battery bracket and the Nth battery bracket, and channels for manual operation, namely the first channel, the second channel and the Nth channel, are arranged between the two battery brackets. Independently opened multifunctional doors, namely the left door of the first channel, the right door of the first channel, the left door of the second channel, the right door of the second channel, the left door of the Nth channel, the right door of the Nth channel, and the first side door and the second side door on both sides of the container are arranged at both ends of the channel, forming an operation space for installation and operation and maintenance;

[0006] Energy storage batteries are installed above the left door of the 1st channel, the left door of the 2nd channel, and the left door of the Nth channel in each channel of the dedicated energy storage container. Air conditioners with cooling function are installed, and sand-proof ventilation windows are set below them. Electric heating panels with electric heating function are installed below the right door of the 1st channel, the right door of the 2nd channel, and the right door of the Nth channel in each opposite channel, and exhaust windows with exhaust fans are set above them.

[0007] The energy storage battery is separated into an equipment room by an equipment partition in the special energy storage container, and the energy storage DC bus control cabinet, fire protection system, and container integrated control box are installed here;

[0008] The container integrated control box connects and controls the air conditioner with refrigeration function, the electric heating panel with electric heating function, the exhaust fan, the internal circulation fan in the container and is linked to the fire protection system;

[0009] The control method of the multi-channel container energy storage system is as follows:

[0010] The container integrated control box controls the air conditioner with refrigeration function and the electric heating plate with electric heating function, exhaust fan and internal circulation fan in the container in two control modes according to the temperature and humidity parameters in the container monitored by the environmental temperature and humidity sampling circuit, the preset control module and the control instructions from the control interface and the host computer. The control modes are:

[0011] In the thermal temperature difference control mode, when the external temperature of the container is higher than the internal temperature of the container and higher than the upper temperature limit set for operation, only the refrigeration and air conditioning equipment and the internal circulation fan are turned on, and the equipment power is adjusted according to the temperature difference. The greater the temperature difference, the greater the power of the refrigeration equipment that is turned on; when the external temperature of the container is higher than the internal temperature of the container but lower than the average temperature set for operation and temperature adjustment is required, an energy-saving control strategy is adopted, that is, only the exhaust fan and the internal circulation fan are turned on; and the exhaust fan and the anti-sand ventilation window are not turned on the same channel, so that the ventilation intake passes through the battery bracket and is discharged;

[0012] In the cold temperature difference control mode, when the external temperature of the container is lower than the internal temperature of the container and lower than the lower temperature limit of the operation setting, only the electric heating plate with electric heating function and the internal circulation fan are turned on, and the power of the equipment is adjusted according to the temperature difference. The greater the temperature difference, the greater the power of the electric heating plate that is turned on; when the external temperature of the container is lower than the internal temperature of the container but the internal temperature of the container is higher than the average temperature set in the operation and temperature adjustment is required, an energy-saving control strategy is adopted, that is, only the exhaust fan and the internal circulation fan are turned on; and the exhaust fan and the anti-sand ventilation window are not turned on the same channel, so that the ventilation intake passes through the battery bracket and is discharged.

[0013] The container integrated control box is characterized in that it includes: an embedded controller, a preset control module, a data storage device, a clock circuit, a power supply circuit, a control device bus, a load equipment control and drive circuit, an environmental temperature and humidity sampling circuit, a communication management circuit, and a control interface; wherein: the embedded controller is respectively connected to the preset control module, the data storage device, the clock circuit, the power supply circuit, the load equipment control and drive circuit, the environmental temperature and humidity sampling circuit, the communication management circuit, and the control interface through the control device bus, so as to form the energy storage battery in the special energy storage container. The temperature and humidity detection and control and the linkage with the fire protection system are performed, and the information exchange and control and adjustment management are performed with the host computer in real time through the communication management circuit.

[0014] The present invention discloses a control method for a multi-channel container energy storage system. The method breaks through the industry practice of arranging energy storage battery placement brackets along the length direction of the container, and adopts an innovative short-distance horizontal layout to install battery string brackets. While greatly improving the installation efficiency, the method adopts a hot temperature difference control mode and a cold temperature difference control mode regulation and an energy-saving temperature regulation control strategy, as well as reasonably designed and installed refrigeration, heating, exhaust fans, internal circulation fans and anti-sand ventilation windows. The exhaust fan and the anti-sand ventilation window are not opened on the same channel, so that the ventilation intake passes through the battery bracket and is discharged. This not only greatly improves the temperature regulation efficiency, is beneficial to the temperature and humidity consistency regulation, and saves energy consumption for the operation and maintenance of the energy storage system; it also effectively protects the operating environment of the battery, which is beneficial to increasing the operating life of the battery and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic block diagram of the architecture of a multi-channel container energy storage system.

[0016] Figure 2 This is a schematic diagram of the functional principle of the container integrated control box. DETAILED DESCRIPTION

[0017] As an implementation example, a control method for a multi-channel container energy storage system is described in conjunction with the accompanying drawings. However, the described embodiment is a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The technology and solutions of the present invention are not limited to the contents given in this embodiment example.

[0018] like Figure 1As shown, a control method for a multi-channel container energy storage system is provided, wherein the multi-channel container energy storage system comprises: a dedicated energy storage container (10), a first channel (11), a second channel (12), an Nth channel (1N), a first channel left door (111), a first channel right door (112), a second channel left door (121), a second channel right door (122), an Nth channel left door (1N1), an Nth channel right door (1N2), a first side door (21), a second side door (22), a first battery bracket (31), a second battery bracket (32), an Nth battery bracket (3N), an equipment partition (40), an energy storage DC bus control cabinet (50), a fire protection system (60), and a container integrated control box (70); wherein:

[0019] The energy storage batteries are installed in a horizontal arrangement in a special energy storage container (10) with a first battery bracket (31), a second battery bracket (32), and an Nth battery bracket (3N), and channels convenient for manual operation, namely a first channel (11), a second channel (12), and an Nth channel (1N), are arranged between the two battery brackets. Independently opened multifunctional doors, namely a first channel left door (111), a first channel right door (112), a second channel left door (121), a second channel right door (122), an Nth channel left door (1N1), and an Nth channel right door (1N2), are arranged at both ends of the channels, as well as a first side door (21) and a second side door (22) on both sides of the container, thereby forming an operation space for installation and operation and maintenance.

[0020] The energy storage battery is installed above the first channel left door (111), the second channel left door (121), and the Nth channel left door (1N1) corresponding to each channel in the dedicated energy storage container (10), and an air conditioner with a cooling function is installed, and a sand-proof ventilation window is arranged below them; an electric heating plate with an electric heating function is installed below the first channel right door (112), the second channel right door (122), and the Nth channel right door (1N2) corresponding to each opposite channel, and an exhaust window with an exhaust fan is arranged above them;

[0021] The energy storage battery is separated into an equipment room by an equipment partition (40) in the body of a dedicated energy storage container (10), and an energy storage DC bus control cabinet (50), a fire protection system (60), and a container integrated control box (70) are installed in the equipment room;

[0022] The container integrated control box (70) is connected to and controls the air conditioner with refrigeration function, the electric heating plate with electric heating function, the exhaust fan, the internal circulation fan in the container, and is linked with the fire protection system (60);

[0023] The control method of the multi-channel container energy storage system is as follows:

[0024] The container integrated control box (70) controls the air conditioner with cooling function and the electric heating plate with electric heating function, the exhaust fan and the internal circulation fan in the container in two control modes according to the temperature and humidity parameters in the container monitored by the environmental temperature and humidity sampling circuit (7028), the preset control module (7022), and the control instructions from the control interface (7030) and the host computer. The control modes are:

[0025] In the thermal temperature difference control mode, when the external temperature of the container is higher than the internal temperature of the container and higher than the upper temperature limit set for operation, only the refrigeration and air conditioning equipment and the internal circulation fan are turned on, and the equipment power is adjusted according to the temperature difference. The greater the temperature difference, the greater the power of the refrigeration equipment that is turned on; when the external temperature of the container is higher than the internal temperature of the container but lower than the average temperature set for operation and temperature adjustment is required, an energy-saving control strategy is adopted, that is, only the exhaust fan and the internal circulation fan are turned on; and the exhaust fan and the anti-sand ventilation window are not turned on the same channel, so that the ventilation intake passes through the battery bracket and is discharged, which greatly improves the temperature adjustment effect and efficiency;

[0026] In the cold temperature difference control mode, when the external temperature of the container is lower than the internal temperature of the container and lower than the lower temperature limit of the operation setting, only the electric heating plate with electric heating function and the internal circulation fan are turned on, and the power of the equipment is adjusted according to the temperature difference. The greater the temperature difference, the greater the power of the electric heating plate that is turned on; when the external temperature of the container is lower than the internal temperature of the container but the internal temperature of the container is higher than the average temperature set in the operation and temperature adjustment is required, an energy-saving control strategy is adopted, that is, only the exhaust fan and the internal circulation fan are turned on; and the exhaust fan and the anti-sand ventilation window are not turned on the same channel, so that the ventilation intake passes through the battery bracket and is discharged, which greatly improves the temperature adjustment efficiency.

[0027] like Figure 2As shown, the container integrated control box (70) is characterized in that it mainly includes: an embedded controller (7021), a preset control module (7022), a data storage device (7023), a clock circuit (7024), a power supply circuit (7025), a control device bus (7026), a load device control and drive circuit (7027), an environmental temperature and humidity sampling circuit (7028), a communication management circuit (7029), and a control interface (7030); wherein: the embedded controller (7021) is connected to the control device bus (702 6) respectively connected to a preset control module (7022), a data storage device (7023), a clock circuit (7024), a power supply circuit (7025), a load device control and drive circuit (7027), an environmental temperature and humidity sampling circuit (7028), a communication management circuit (7029), and a control interface (7030), so as to form a temperature and humidity detection and control system for the energy storage battery in the dedicated energy storage container (10), and to be linked with the fire protection system, and to exchange information with the host computer in real time through the communication management circuit (7029) and to be controlled for adjustment and management.

[0028] The present invention discloses a control method for a multi-channel container energy storage system. The method breaks through the industry practice of arranging energy storage battery placement brackets along the length direction of the container, and adopts an innovative short-distance horizontal layout to install battery string brackets. While greatly improving the installation efficiency, the method adopts a hot temperature difference control mode and a cold temperature difference control mode regulation and an energy-saving temperature regulation control strategy, as well as reasonably designed and installed refrigeration, heating, exhaust fans, internal circulation fans and anti-sand ventilation windows. The exhaust fan and the anti-sand ventilation window are not opened on the same channel, so that the ventilation intake passes through the battery bracket and is discharged. This not only greatly improves the temperature regulation efficiency, is beneficial to the temperature and humidity consistency regulation, and saves energy consumption for the operation and maintenance of the energy storage system; it also effectively protects the operating environment of the battery, which is beneficial to increasing the operating life of the battery and improving safety.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for a multi-channel container energy storage system, the multi-channel container energy storage system comprising: Special energy storage container (10), first channel (11), second channel (12), Nth channel (1N), first channel left door (111), first channel right door (112), second channel left door (121), second channel right door (122), Nth channel left door (1N1), Nth channel right door (1N2), first side door (21), second side door (22), first battery bracket (31), second battery bracket (32), Nth battery bracket (3N), equipment partition (40), energy storage DC bus control cabinet (50), fire protection system (60), container integrated control box (70); wherein: The energy storage batteries are installed in a horizontal arrangement in a special energy storage container (10) with a first battery bracket (31), a second battery bracket (32), and an Nth battery bracket (3N), and channels convenient for manual operation, namely a first channel (11), a second channel (12), and an Nth channel (1N), are arranged between the two battery brackets. Independently opened multifunctional doors, namely a first channel left door (111), a first channel right door (112), a second channel left door (121), a second channel right door (122), an Nth channel left door (1N1), and an Nth channel right door (1N2), are arranged at both ends of the channels, as well as a first side door (21) and a second side door (22) on both sides of the container, thereby forming an operation space for installation and operation and maintenance. The energy storage battery is installed above the first channel left door (111), the second channel left door (121), and the Nth channel left door (1N1) corresponding to each channel in the dedicated energy storage container (10), and an air conditioner with a cooling function is installed, and a sand-proof ventilation window is arranged below them; an electric heating plate with an electric heating function is installed below the first channel right door (112), the second channel right door (122), and the Nth channel right door (1N2) corresponding to each opposite channel, and an exhaust window with an exhaust fan is arranged above them; The energy storage battery is separated into an equipment room by an equipment partition (40) in the body of a dedicated energy storage container (10), and an energy storage DC bus control cabinet (50), a fire protection system (60), and a container integrated control box (70) are installed in the equipment room; The container integrated control box (70) is connected to and controls the air conditioner with refrigeration function, the electric heating plate with electric heating function, the exhaust fan, the internal circulation fan in the container, and is linked with the fire protection system (60); The control method of the multi-channel container energy storage system is as follows: The container integrated control box (70) controls the air conditioner with cooling function and the electric heating plate with electric heating function, the exhaust fan and the internal circulation fan in the container in two control modes according to the temperature and humidity parameters in the container monitored by the environmental temperature and humidity sampling circuit (7028), the preset control module (7022), and the control instructions from the control interface (7030) and the host computer. The control modes are: In the thermal temperature difference control mode, when the external temperature of the container is higher than the internal temperature of the container and higher than the upper temperature limit set for operation, only the refrigeration and air conditioning equipment and the internal circulation fan are turned on, and the equipment power is adjusted according to the temperature difference. The greater the temperature difference, the greater the power of the refrigeration equipment that is turned on; when the external temperature of the container is higher than the internal temperature of the container but lower than the average temperature set for operation and temperature adjustment is required, an energy-saving control strategy is adopted, that is, only the exhaust fan and the internal circulation fan are turned on; and the exhaust fan and the anti-sand ventilation window are not turned on the same channel, so that the ventilation intake passes through the battery bracket and is discharged; In the cold temperature difference control mode, when the external temperature of the container is lower than the internal temperature of the container and lower than the lower temperature limit of the operation setting, only the electric heating plate with electric heating function and the internal circulation fan are turned on, and the power of the equipment is adjusted according to the temperature difference. The greater the temperature difference, the greater the power of the electric heating plate that is turned on; when the external temperature of the container is lower than the internal temperature of the container but the internal temperature of the container is higher than the average temperature set in the operation and temperature adjustment is required, an energy-saving control strategy is adopted, that is, only the exhaust fan and the internal circulation fan are turned on; and the exhaust fan and the anti-sand ventilation window are not turned on the same channel, so that the ventilation intake passes through the battery bracket and is discharged.

2. According to the control method of a multi-channel container energy storage system as claimed in claim 1, the container integrated control box (70) is characterized by comprising: An embedded controller (7021), a preset control module (7022), a data storage device (7023), a clock circuit (7024), a power circuit (7025), a control device bus (7026), a load device control and drive circuit (7027), an environmental temperature and humidity sampling circuit (7028), a communication management circuit (7029), and a control interface (7030); wherein: the embedded controller (7021) is respectively connected to the preset control module (7022), the data storage device (7023), the clock circuit (7024), the power circuit (7025), the load device control and drive circuit (7027), the environmental temperature and humidity sampling circuit (7028), the communication management circuit (7029), and the control interface (7030) through the control device bus (7026), so as to form a temperature and humidity detection and control system for the energy storage battery in the dedicated energy storage container (10), and to be linked with the fire protection system, and to exchange information with the host computer in real time through the communication management circuit (7029) and to be controlled for adjustment and management.

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