Modular sodium-based energy storage system with advanced control

Abstract

The utility model discloses a modularization sodium base energy storage system with senior control relates to energy storage management technical field, including the rack, the high voltage controller is installed on the rack upper end, and the rack front end is arranged with a plurality of layers of placing cavity, and the same layer placing cavity rear portion is installed with the power backplate, and the power backplate all is installed with group controller, and the placing cavity inside all pull -out type installation has a plurality of battery packs, and the battery pack inside is installed with a plurality of sodium electricity electric core, and every group sodium electricity electric core all is installed with the electric core control panel. The utility model through the dynamic detection of all single battery's physical quantity in the operation process, through the algorithm accurate forecast each electric core's performance parameter, cut out the electric core of poor performance, make all electric core can basically exert respective optimal performance, can realize system, dynamic, intelligent control to electric core, realize more cycle times, increase economic benefit.

Description

Technical Field

[0001] This utility model relates to the field of energy storage management technology, specifically a modular sodium-based energy storage system with advanced control. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, the processing, storage and use of lithium metal are subject to very high environmental requirements, which means that lithium batteries cannot be used normally in high and low temperature environments and may even pose certain dangers. At the same time, the inconsistency between lithium batteries and their cells makes it difficult to use energy storage systems effectively. Utility Model Content

[0003] The purpose of this invention is to provide a modular sodium-based energy storage system with advanced control to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a modular sodium-based energy storage system with advanced control, including a cabinet, a high-voltage controller installed at the top of the cabinet, several layers of placement cavities arranged at the front of the cabinet, a power backplate installed at the rear of each layer of placement cavity, a group controller installed on each power backplate, and several battery packs installed in a pull-out manner inside each placement cavity.

[0005] The battery pack contains multiple sets of sodium battery cells, and each set of sodium battery cells is equipped with a cell control board.

[0006] Preferably, the power and communication circuits of the entire cabinet are formed between the placement cavities of each layer through power and communication cables between power backplanes.

[0007] Preferably, the battery cell control board is provided with a power unit and a control unit.

[0008] Preferably, the power unit integrates power semiconductors to control the cutting in and cutting out of the battery cells, and the control unit integrates a microcontroller, a drive circuit, and a data acquisition circuit.

[0009] Preferably, the control unit controls the switching of the power semiconductor on the power unit and collects physical quantities such as the voltage of the individual battery cell, the voltage drop of the power semiconductor, and the temperature.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This modular sodium-based energy storage system with advanced control dynamically detects the physical quantities of all individual cells during operation and accurately predicts the performance parameters of each cell through algorithms. It then cuts out cells with poor performance, allowing all cells to basically achieve their optimal performance. This enables systematic, dynamic, and intelligent control of the cells, resulting in more cycle times and increased economic benefits.

[0012] 2. This modular sodium-based energy storage system features advanced control. By utilizing the wide temperature range of sodium-ion batteries, the high inherent ion diffusion coefficient of the sodium batteries compensates for performance losses at low temperatures, and their excellent thermal stability prevents exothermic reactions at high temperatures. This allows the sodium batteries to exhibit higher stability and reliability under extreme temperature conditions, making them suitable for extremely cold and hot environments, thus enabling better product use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the battery pack structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the battery pack of this utility model;

[0017] Figure 5 This is a diagram of the electrical structure of this utility model;

[0018] Figure 6 This is a communication hierarchy diagram of this utility model.

[0019] In the diagram: 1. Cabinet; 2. High-voltage controller; 3. Power backplane; 4. Group controller; 5. Battery pack; 501. Sodium battery cell; 502. Cell control board. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figures 1 to 6 As shown, this embodiment has an advanced control modular sodium-based energy storage system, including a cabinet 1. The cabinet 1 provides a carrier for the installation of various components. A high-voltage controller 2 is installed on the upper end of the cabinet 1. Several layers of placement cavities are arranged at the front end of the cabinet 1. A power backplate 3 is installed at the rear of the same layer of placement cavities. A group controller 4 is installed on each of the power backplates 3. Several battery packs 5 are installed in the placement cavities by a pull-out method. The battery packs 5 are connected to the power backplate 3 by a pull-out method. The power backplate 3 provides power connection and communication connection between the battery packs 5 in the same layer, as well as high and low voltage isolation.

[0023] The battery pack 5 has multiple sodium battery cells 501 installed inside. By designing the cells as modular, each cell in the module can be monitored, controlled, and measured. The sodium battery cells 501 have a wide operating temperature range, high discharge rate, and high tolerance to overcharge and over-discharge, thus giving full play to their safety performance. Each group of sodium battery cells 501 is equipped with a cell control board 502.

[0024] Specifically, the power and communication cables between the various placement cavities form the power and communication loop for the entire cabinet. By dynamically monitoring the physical quantities of all individual cells during operation, and using algorithms to accurately predict the performance parameters of each cell, underperforming cells are identified, ensuring that all cells can achieve their optimal performance and minimizing the adverse effects of the "bottleneck effect" in traditional BMS. All individual cells maintain good consistency throughout the entire charging and discharging process.

[0025] Furthermore, the cell control board 502 is equipped with a power unit and a control unit.

[0026] Furthermore, the power unit integrates power semiconductors to control the cutting in and cutting out of the battery cells, and the control unit integrates a microcontroller, a drive circuit, and a data acquisition circuit.

[0027] Furthermore, the control unit controls the switching of power semiconductors on the power unit and collects physical quantities such as individual cell voltage, power semiconductor voltage drop, and temperature. Through certain control methods, it can also collect the open-circuit voltage of the cell during operation, perform dynamic and detailed analysis of cell performance, and maximize system performance.

[0028] like Figure 6 As shown;

[0029] The first layer is the main controller, which is responsible for the core control algorithm and scheduling logic of the BMS and can communicate with the external EMS.

[0030] The second layer consists of the high-voltage controller and the group controller. The voltage controller is responsible for total voltage and current detection, overvoltage and overcurrent protection, pre-charge logic, etc. The group controller 4 is responsible for receiving the control logic from the main controller and delegating the corresponding logic down to the cell level. The high-voltage controller 2 and the group controller 4 communicate with the main controller via a dedicated high-speed Ethernet bus.

[0031] The third layer is the cell controller. The cell controller 502 directly controls the cell through IO and configures the relevant ADC circuit to detect the cell's analog quantity.

[0032] The fourth layer is the logic circuit, where the cell power board is the power circuit within the battery pack, and the power backplane 3 is the cabinet power circuit.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular sodium-based energy storage system with advanced control, comprising a cabinet (1), characterized in that: A high voltage controller (2) is installed on the upper end of the cabinet (1). Several layers of placement cavities are arranged at the front end of the cabinet (1). A power backplate (3) is installed at the rear of the same layer of placement cavity. A group controller (4) is installed on each of the power backplates (3). Several battery packs (5) are installed in the placement cavity by pull-out. The battery pack (5) has multiple sets of sodium battery cells (501) installed inside, and each set of sodium battery cells (501) is equipped with a cell control board (502).

2. The modular sodium-based energy storage system with advanced control according to claim 1, characterized in that: The power and communication circuits of the cabinet are formed between the placement cavities of each layer through the power and communication cables between the power backplanes (3).

3. The modular sodium-based energy storage system with advanced control according to claim 1, characterized in that: The cell control board (502) is equipped with a power unit and a control unit.

4. The modular sodium-based energy storage system with advanced control according to claim 3, characterized in that: The power unit integrates power semiconductors to control the cutting in and cutting out of the battery cells, and the control unit integrates a microcontroller, a drive circuit, and a data acquisition circuit.

5. The modular sodium-based energy storage system with advanced control according to claim 4, characterized in that: The control unit controls the switching of the power semiconductor on the power unit and collects physical quantities such as individual cell voltage, power semiconductor voltage drop, and temperature.

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