Energy storage stack system

Abstract

The utility model discloses an energy storage stacking system, which comprises a battery assembly box comprising a battery box body, and a battery pack and a battery pack management unit which are arranged in the battery box body; the main control box comprises a main control box body, and a main control board and an energy storage converter which are arranged in the main control box body; a battery cluster management unit, a main positive contactor and a main negative contactor are also arranged in the main control box body; and the main control box and the battery assembly box are stacked up and down and are mechanically and electrically connected with each other through a stacking connector. According to the utility model, the battery cluster management unit, the main positive contactor, the main negative contactor and other high-voltage control assemblies are arranged in the main control box body, so that a high-voltage control box does not need to be specially arranged, the integration level of the main control box is higher, the main control box and the battery assembly box can be directly stacked up and down during assembly, and disassembly, assembly and capacity expansion are more convenient; in addition, monitoring signals of the battery pack are all realized in the main control box in a centralized manner, so that the maintenance cost is saved; moreover, the connection of two stacked connectors generated by the high-voltage control box in the prior art is reduced, and the electrical safety is better.

Description

Technical Field

[0001] This utility model relates to the field of energy storage system technology, and specifically to an energy storage stacking system. Background Technology

[0002] In recent years, the global energy transition has continued to accelerate, driving the rapid rise of the new energy (solar, wind, etc.) industry. Emerging sectors, represented by energy storage, have sprung up like mushrooms after rain and developed rapidly, with more and more manufacturers joining the energy storage sector.

[0003] Currently, the energy storage industry has various application scenarios, among which residential energy storage is a major component, playing a significant role in improving power supply stability and reducing costs. In this field, residential energy storage system solutions are mainly divided into split systems and integrated systems: split systems refer to battery module boxes, high-voltage control boxes, and energy storage converters being placed separately and electrically connected to each other via cables; integrated systems refer to battery module boxes, high-voltage control boxes, and energy storage converters being stacked and directly electrically connected via stacking connectors.

[0004] The advantages of an integrated energy storage stacking system are: it reduces the installation area occupied by components such as battery module boxes, high-voltage control boxes, and energy storage converters, eliminating the need for on-site wiring and installation operations; in addition, the stacking connectors designed by each manufacturer can achieve quick and foolproof docking installation, while avoiding the cross-use and mixing of components from different manufacturers, thus improving compatibility and safety.

[0005] Existing integrated energy storage stacking systems achieve rapid installation and convenient centralized management through a stacking arrangement, but their integration and safety still need improvement. This is mainly reflected in the following aspects: high-voltage control components such as the main positive contactor, main negative contactor, and battery cluster management unit are housed in a dedicated high-voltage control box, which is stacked as an independent component between the energy storage converter and the battery module box. This makes assembly, maintenance, or expansion of battery modules inconvenient. In addition, the way the upper and lower surfaces of the high-voltage control box are connected to the energy storage converter and battery modules via stacking connectors also poses safety hazards. Utility Model Content

[0006] This utility model provides an energy storage stacking system, which aims to further improve the ease of assembly and safety of the energy storage stacking system; this utility model is achieved through the following technical solutions.

[0007] An energy storage stacking system, comprising:

[0008] A battery module box, including a battery box body and a battery pack and a battery pack management unit disposed inside the battery box body;

[0009] The main control box includes the main control box body and the main control board and energy storage converter installed inside the main control box body;

[0010] The main control box is characterized by having a high-voltage control component, which includes a battery cluster management unit, a main positive contactor, and a main negative contactor. The main control box and the battery pack box are stacked vertically and are mechanically and electrically connected to each other through a stacking connector.

[0011] The energy storage stacking system provided by the above technical solution integrates high-voltage control components such as the battery cluster management unit, main positive contactor, and main negative contactor into the main control box, eliminating the need for a separate high-voltage control box. This results in higher integration of the main control box, which can be directly stacked with the battery module box and connected via stacking connectors during assembly, facilitating disassembly and capacity expansion. Furthermore, all monitoring signals for the battery pack are centralized in the main control box, saving maintenance costs. Moreover, the energy storage stacking system provided by the above technical solution reduces the number of stacking connectors required by the high-voltage control box in existing technologies, resulting in better electrical safety.

[0012] As a preferred technical solution, a bus fuse is connected to the power supply bus of the battery pack, the bus fuse has a fuse detection unit, and the fuse detection unit is electrically connected to the main control board.

[0013] The advantages of the above-mentioned preferred solution are as follows: by connecting a bus fuse on the power supply bus of the battery pack, short-circuit protection and overload protection of the power supply bus and all battery packs can be achieved; and by monitoring the status of the bus fuse through the fuse detection unit, the main control board can make timely optimization control.

[0014] As a preferred technical solution, a Hall element is connected to the power supply bus of the battery pack, and the Hall element is electrically connected to the battery cluster management unit.

[0015] The advantages of the above preferred solution are: by detecting the magnetic field through the Hall element to indirectly measure the magnitude of the current, feedback is provided to the battery cluster management unit to control the current, ensuring that it remains stable within the set range, thereby improving the stability and efficiency of the circuit.

[0016] As a preferred technical solution, a pressure divider is provided inside the main control box, and the battery cluster management unit and the main control board are respectively located on both sides of the pressure divider.

[0017] The advantages of the above-mentioned preferred solution are: by isolating the high-voltage and low-voltage parts in the main control box through the voltage divider, especially the battery cluster management unit and the main control board, the product integration is improved while significantly enhancing safety.

[0018] As a preferred technical solution, the front end of the main control box is equipped with a human-machine interface module, and the rear end is equipped with a heat dissipation component. The heat dissipation component includes a ventilation housing, on which a cooling fan and a radiator are mounted.

[0019] The advantages of the above-mentioned preferred solution are: the system's working mode and parameters can be set through the human-computer interaction module, enabling flexible control of the system; and the functional components of the main control box can be cooled in a timely manner through the heat dissipation component, ensuring the stability of the operation.

[0020] As a preferred technical solution, there are multiple battery module boxes, which are stacked vertically in a single row and mechanically and electrically connected to each other through stacking connectors.

[0021] The advantages of the above preferred solution are: multiple battery module boxes stacked in a single row save more lateral space, and multiple battery module boxes stacked in a single row can be connected sequentially through the stacking connectors on the upper and lower surfaces, making the connection method simpler.

[0022] As a preferred technical solution, the energy storage stacking system further includes a base, and there are multiple battery module boxes. The multiple battery module boxes are stacked vertically on the base in multiple columns. Each column of battery module boxes is mechanically and electrically connected to each other through a stacking connector. The base is provided with a base connector corresponding to each column of battery module boxes, and the base is provided with connection lines that connect the base connectors.

[0023] The advantages of the above-mentioned preferred solution are: by stacking multiple rows of battery module boxes on the base, it is easier to expand the capacity, and it also avoids the stacking inconvenience and safety issues caused by the excessive height of the entire energy storage stacking system. The base is designed to facilitate the horizontal connection between rows.

[0024] As a preferred technical solution, the battery cluster management unit is electrically connected to the battery pack management unit of each battery component box through a double-chain daisy-chain communication circuit.

[0025] The advantages of the above-mentioned preferred solution are: compared with the traditional CAN bus communication, the dual-chain daisy-chain communication method has the advantage that even if the communication at one point is interrupted, data can still be read from the other chain, without affecting the data acquisition of each battery pack management unit.

[0026] As a preferred technical solution, the battery box is provided with an installation partition to divide the internal space of the battery box into at least two installation spaces; the battery pack includes at least two cell groups connected in series, and each cell group is correspondingly arranged in one of the installation spaces; a battery pack fuse is provided between the cell groups.

[0027] The advantages of the above preferred solution are: by installing a partition, at least two battery cell groups are relatively isolated from each other, thus improving safety.

[0028] As a preferred technical solution, the mounting partition is provided with a fire extinguishing component for each of the mounting spaces. The fire extinguishing component includes a temperature sensor for detecting the temperature of the mounting space and a fire extinguishing device for outputting fire extinguishing material to the mounting space.

[0029] The advantages of the above-mentioned preferred solution are as follows: each battery cell installation space is equipped with a corresponding fire extinguishing component. When the temperature sensor of the fire extinguishing component senses that the internal temperature has reached the fire extinguishing activation temperature, the fire extinguishing device starts to work and extinguishes the fire. This can effectively prevent the accident from spreading and improve the safety of the system.

[0030] As a preferred technical solution, the mounting partition is arranged longitudinally inside the battery box, and the stacking connector is installed at the upper and lower ends of the mounting partition, respectively, with the stacking connector exposed on the upper and lower surfaces of the battery box.

[0031] The advantages of the above-mentioned preferred solution are: while the mounting partition divides the battery box into sections, it also serves to support the stacking connectors. In addition, the longitudinally arranged mounting partition can also provide support for the upper and lower surfaces of the battery box, making the structure more stable. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a front view of the energy storage stacking system provided in this embodiment of the utility model.

[0034] Figure 2 This is a perspective view of the battery module box in the energy storage stacking system provided in this embodiment of the utility model.

[0035] Figure 3 This is a perspective view of the main control box in the energy storage stacking system provided in this embodiment of the utility model.

[0036] Figure 4 This is a basic circuit diagram of the energy storage stacking system provided in this embodiment of the utility model.

[0037] Figure 5 This is a communication topology diagram of the energy storage stacking system provided in this embodiment of the utility model.

[0038] Figure 6 This is an internal structural diagram of the main control box in the energy storage stacking system provided in this embodiment of the utility model.

[0039] Figure 7 This is a rear structural diagram of the main control box in the energy storage stacking system provided in this embodiment of the utility model.

[0040] Figure 8 This is an internal structural diagram of the battery module box in the energy storage stacking system provided in this embodiment of the utility model. Detailed Implementation

[0041] To make the technical solution of this utility model clearer and its technical advantages more apparent, the technical solution of this utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of this utility model.

[0042] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. For ease of explanation, the orientations in this utility model are defined in conjunction with the drawings. These orientation definitions are merely for the purpose of clearly describing the relative positional relationships and are not intended to limit the actual orientation of the product or device during production, use, or sale. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Moreover, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0044] Combination Figures 1 to 3 As shown, the energy storage stacking system 100 provided in this embodiment includes a main control box 10 and at least one battery module box 20. The main control box 10 and the battery module box 20 are stacked vertically and are mechanically and electrically connected to each other through a stacking connector. See [link to documentation]. Figure 2 The socket 29 of the stacked connector is provided on the top of the battery module box 20.

[0045] The connection method using stacking connectors can be implemented in two ways: First, matching plugs and sockets are installed at the bottom of the main control box 10 and the top of the battery pack box 20 to achieve stacking. Second, sockets are installed at both the bottom of the main control box 10 and the top of the battery pack box 20, and dedicated bidirectional plugs are used to connect and mate with the sockets at the bottom of the main control box 10 and the top of the battery pack box 20, respectively. Furthermore, the mating joints of the stacking connectors are equipped with waterproof rubber rings, achieving an IP67 protection rating to ensure safety and reliability in rain and snow.

[0046] See Figure 2 and Figure 3 As shown, the top of the battery module box 20 has a protrusion 205, and the bottom of the main control box 10 has a groove 105. When the main control box 10 is stacked on top of the battery module box 20, the protrusion 205 is embedded in the groove 105, thereby providing positioning and reinforcement, preventing the main control box 10 from shifting laterally relative to the battery module box 20 and damaging the stacking connector. In addition, the protrusion 205 on the top of the battery module box 20 has an embedded handle 206, and the top of the main control box 10 also has an embedded handle 106; this maintains an aesthetically pleasing appearance while facilitating user installation and transportation.

[0047] Combination Figure 1 As shown, when there are multiple battery module boxes 20, the multiple battery module boxes 20 are stacked vertically in at least one column, and the two adjacent battery module boxes 20 are also mechanically and electrically connected through a stacking connector.

[0048] Figure 1 In the illustrated embodiment, six battery module boxes 20 constitute a battery cluster, which is managed uniformly by a main control box 10. The six battery module boxes 20 are arranged in two stacked columns, with each column of battery module boxes 20 mechanically and electrically connected to each other via stacking connectors. The energy storage stacking system 100 also includes a base 30, on which a base connector corresponding to each column of battery module boxes is provided. The base 30 contains connecting lines that connect the base connectors, thereby electrically connecting the columns. The advantages of multi-column stacking are: by stacking multiple columns of battery module boxes 20 on the base 30, it is easier to expand capacity and avoids the stacking inconvenience and safety issues caused by an excessively tall energy storage stacking system. The base 30 also facilitates lateral connections between columns.

[0049] It is understandable that when there are multiple battery module boxes 20, they can be stacked vertically in a single row, and mechanically and electrically connected to each other through stacking connectors. The advantages of single-row stacking are that multiple battery module boxes 20 stacked in a single row save more lateral space, and the multiple battery module boxes stacked in a single row can be connected sequentially through the stacking connectors on their upper and lower surfaces, making the connection method simpler.

[0050] Combination Figure 2 and Figure 4 As shown, each battery module box 20 includes a battery box body 21 and a battery pack (PACK) and a battery pack management unit (BMU) disposed within the battery box body. The battery pack management unit (BMU) is connected to the corresponding battery pack (PACK) by a conventional connection method and is used to manage and monitor the performance and status of the corresponding battery pack.

[0051] Combination Figure 3 , Figure 4 and Figure 6 As shown, the main control box 10 includes a main control box body 11 and a main control board 12 and an energy storage converter (PCS) 13 disposed within the main control box body 11. It should be emphasized that, in this embodiment, the main control box body 11 also contains a high-voltage control assembly, which includes a battery cluster management unit (BCU) 14, a main positive contactor 15, and a main negative contactor 16. The battery packs (PACKs) of each battery module box 20 are connected in series (or in parallel) and electrically connected to the energy storage converter 13 using conventional connection methods; the main control board 12, the energy storage converter 13, the battery cluster management unit 14, the main positive contactor 15, and the main negative contactor 16 are also electrically connected to each other using conventional connection methods.

[0052] See Figure 4 As shown, in this embodiment, the battery cluster management unit (BCU) 14 is electrically connected to the battery pack management unit (BMU) of each battery module box 20 through a dual-chain daisy-chain communication circuit. Compared with the traditional CAN bus communication, the advantage of the dual-chain daisy-chain communication method is that even if the communication at one point is interrupted, data can still be read from the other chain, without affecting the data acquisition of each battery pack management unit.

[0053] In the energy storage stacking system 100 provided by the above embodiments, the high-voltage control components such as the battery cluster management unit 14, the main positive contactor 15, and the main negative contactor 16 are directly installed inside the main control box 11, eliminating the need for a separate high-voltage control box as in the prior art. This results in a higher level of integration of the main control box. During assembly, the main control box 10 can be directly stacked with the battery module box 20 and connected via a stacking connector, making disassembly and capacity expansion easier. Furthermore, the monitoring signals of the battery pack are all concentrated in the battery cluster management unit 14 within the main control box, saving maintenance costs. Moreover, the energy storage stacking system 100 provided by the above embodiments reduces the connection and coordination of the two stacking connectors required by the high-voltage control box in the prior art, resulting in better electrical safety.

[0054] See also Figure 6 All battery packs have a bus fuse 17 connected to their power supply bus (this bus fuse 17 is in Figure 4 The circuit is marked as RD). The bus fuse 17 has a fuse detection unit, which is electrically connected to the main control board 12. The main control board 12 is equipped with a circuit board fuse. In this embodiment, by connecting the bus fuse 17 to the power supply bus of the battery pack, short-circuit protection and overload protection for the power supply bus and all battery packs can be achieved. Furthermore, by monitoring the status of the bus fuse through the fuse detection unit, when the bus fuse 17 blows, the circuit board fuse will blow immediately, thus protecting the main control board 12 in a timely manner.

[0055] See also Figure 6 Hall element 18 is connected to the power supply bus of all battery packs (the Hall element 18 is in Figure 4 The circuit is labeled HE). The Hall element 18 is electrically connected to the battery cluster management unit 14. In this embodiment, the Hall element 18 detects the magnetic field of the circuit to indirectly measure the magnitude of the circuit current, providing feedback for the battery cluster management unit 14 to control the battery pack, ensuring that it remains stable within the set range, thereby improving the stability and efficiency of the circuit.

[0056] In addition, in this embodiment, the high-voltage control component also includes a DC-side main switch 19 and a one-button start button (not shown in the figure), which are connected to the power supply bus of the battery pack and located on the main control box 11. The power-on logic control sequence of the entire system is as follows: With the DC-side main switch 19 in the ON position, the system is in standby mode. Pressing the one-button start button powers on the system. First, the main negative contactor 16 closes for pre-charging. The BCU and PCS detect that the total voltage reaches 700V, allowing the main positive contactor 15 to close, pre-charging is disabled, and power-on is complete. Then, power output is performed according to the user-selected mode. The power-off control sequence of the entire system is as follows: Press and hold the one-button start button for about 5 seconds, then release it. Finally, turn the DC-side main switch 19 to the OFF position to power off the system.

[0057] In this embodiment, considering that the total DC voltage is as high as 700V and the battery cluster management unit (BCU) can reach up to 1500V, a voltage divider is provided in the main control box 11 to isolate the high voltage part and the low voltage part in the main control box 11, especially to spatially isolate the battery cluster management unit 14 and the main control board 12, thereby improving the integration of the product and significantly enhancing safety.

[0058] Combination Figure 3 As shown, a human-machine interface module 111 is provided at the front end of the main control box 11. The system's working mode and parameters are set through the human-machine interface module 111 to achieve flexible control of the system.

[0059] Combination Figure 4 As shown, the energy storage stacking system 100 provided in the above embodiments can operate in the following modes: ① Self-consumption mode (off-grid): When there is sufficient sunlight, the energy generated by the photovoltaic modules is prioritized for use by the load, and the excess energy can be used to charge each battery pack, reducing the curtailment rate of photovoltaic power; if the load power is greater than the power provided by the photovoltaic, the battery pack stops charging, and the photovoltaic and battery pack simultaneously output power to the load. ② Power sales mode (grid-connected): When there is sufficient sunlight and the grid power is normal, the energy of the photovoltaic and battery pack is used by the load, and the excess energy is fed into the grid; if there is no load or the load is small, all or most of the energy is fed into the grid. ③ Backup power mode (grid-connected): When there is sufficient sunlight and the grid power is normal, the energy of the photovoltaic and grid is used by the load, and the excess energy is used to charge the battery pack; if there is no load or the load is small, all or most of the energy is used to charge the battery pack. ④ Peak-valley arbitrage: Adjustments are made according to the local electricity price; when the electricity price is high, the battery pack discharges to the grid, and when the electricity price is low, it charges the battery pack.

[0060] Combination Figure 3 and Figure 6 As shown, a heat dissipation assembly is provided at the rear end of the main control box 11. The heat dissipation assembly includes a ventilation housing 112, on which two cooling fans 113 and a heat sink are provided. The heat dissipation assembly dissipates heat from the functional components of the main control box in a timely manner, ensuring the stability of operation and extending the service life of the system and components.

[0061] Two cooling fans 113 direct airflow towards the most significant heat sources, particularly the main control board 12 with its numerous capacitors. Furthermore, the heatsink is made of aluminum alloy, offering excellent thermal conductivity and dissipation. Its surface features numerous fins designed to increase the heat dissipation area and significantly improve efficiency. Heat from inside the main control box 11 is transferred to the fins and then dissipated by the fans.

[0062] See Figure 8As shown, this embodiment also provides a novel battery pack box 20, in which a mounting partition 22 is provided inside the battery box body 21, dividing the internal space of the battery box body 21 into two mounting spaces; each battery pack box 20 includes two cell groups 231 connected in series, each cell group 231 includes sixteen cells connected in series, and each cell group 231 is correspondingly arranged in one of the mounting spaces; a battery pack fuse is provided between the cell groups 231.

[0063] The battery pack box 20 provided in the above embodiment isolates at least two battery cell groups by installing a partition. The battery pack fuse can promptly melt the two battery cell groups to prevent the failure of one battery cell group from quickly affecting the other battery cell group, thereby further improving safety.

[0064] See also Figure 8 Each mounting partition 22 is equipped with a fire extinguishing assembly 25 corresponding to each mounting space. The fire extinguishing assembly includes a temperature sensor that detects the temperature of the mounting space and a fire extinguishing device that outputs fire extinguishing material to the mounting space. The fire extinguishing device uses perfluorohexane gas for fire extinguishing. Thus, each battery cell mounting space is equipped with one fire extinguishing assembly. When the temperature sensor of the fire extinguishing assembly detects that the internal temperature has reached the fire extinguishing activation temperature, the fire extinguishing device starts working and extinguishes the fire. This effectively prevents the accident from escalating and improves the safety of the system.

[0065] See also Figure 8 The mounting partition 22 is longitudinally arranged inside the battery housing 21. The stacking connector is mounted on the upper and lower ends of the mounting partition 22, respectively. For example, the upper end of the mounting partition 22 has a socket 29 for the stacking connector, and the lower end has a plug 28 for the stacking connector. The socket 29 and plug 28 are exposed on the upper and lower surfaces of the battery housing 21, respectively. Therefore, the mounting partition 22 not only divides the battery housing into sections but also supports the stacking connector. Furthermore, the longitudinally arranged mounting partition provides support for the upper and lower surfaces of the battery housing, resulting in a more stable structure.

[0066] In addition, an explosion-proof valve is installed on the back of the battery box 21. Its function is to allow ventilation and air exchange inside the battery box 21 to maintain the same internal and external pressure. When the internal pressure is too high, the explosion-proof valve will automatically open to release the pressure.

[0067] Combination Figure 5As shown, the energy storage stacking system 100 provided in the above embodiment offers multiple communication methods: the battery cluster management unit (BCU) acquires data of the entire battery pack via daisy-chain communication, including total internal and external voltage, data of each BMU, battery cell voltage, battery cell temperature, maximum charge / discharge current, main positive and main negative contactor status, DC side main switch status, highest and lowest cell voltage, battery SOH (State of Health), SOC (State of Charge), highest and lowest cell temperature, and no-charge / no-discharge signs. This data is aggregated in the BCU and then sent to the main control board 12 via the CAN bus to control the energy storage converter 13. External acquisition signals, input / output dry contact signals, and external alarm signals are sent to the main control board 12 via the Ethernet port to control the energy storage converter 13. The cell temperature and voltage sampling uses a CCS design, avoiding the cumbersome wiring, excessive and long wiring, and the problems of probe failure, falling off, and poor soldering compared to traditional temperature sensors and wiring harness sampling.

[0068] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An energy storage stacking system, comprising: A battery module box, including a battery box body and a battery pack and a battery pack management unit disposed inside the battery box body; The main control box includes the main control box body and the main control board and energy storage converter installed inside the main control box body; The main control box is characterized by having a high-voltage control component, which includes a battery cluster management unit, a main positive contactor, and a main negative contactor. The main control box and the battery pack box are stacked vertically and are mechanically and electrically connected to each other through a stacking connector.

2. The energy storage stack system of claim 1, wherein, A bus fuse is connected to the power supply bus of the battery pack. The bus fuse has a fuse detection unit, which is electrically connected to the main control board.

3. The energy storage stack system of claim 1 or 2, wherein, A Hall element is connected to the power supply bus of the battery pack, and the Hall element is electrically connected to the battery cluster management unit.

4. The energy storage stack system of claim 1, wherein, The main control box is equipped with a pressure divider plate, and the battery cluster management unit and the main control board are respectively located on both sides of the pressure divider plate.

5. The energy storage stack system of claim 1, wherein, There are multiple battery module boxes, which are stacked vertically in a single row and are mechanically and electrically connected to each other through stacking connectors.

6. The energy storage stack system of claim 1, wherein, The energy storage stacking system also includes a base, and there are multiple battery module boxes. The multiple battery module boxes are stacked vertically on the base in multiple columns. Each column of battery module boxes is mechanically and electrically connected to each other through a stacking connector. The base is provided with a base connector corresponding to each column of battery module boxes, and the base is provided with connection lines that connect the base connectors.

7. The energy storage stack system of claim 1, wherein, The battery cluster management unit is electrically connected to the battery pack management unit of each battery component box through a double-chain daisy-chain communication circuit.

8. The energy storage stack system of claim 1, wherein, The battery box is provided with an installation partition, which divides the internal space of the battery box into at least two installation spaces; the battery pack includes at least two cell groups connected in series, and each cell group is correspondingly arranged in one of the installation spaces; a battery pack fuse is provided between the cell groups.

9. The energy storage stack system of claim 8, wherein, The mounting partition is equipped with a fire extinguishing component for each mounting space. The fire extinguishing component includes a temperature sensor for detecting the temperature of the mounting space and a fire extinguishing device for outputting fire extinguishing material to the mounting space.

10. The energy storage stack system of claim 8 or 9, wherein, The mounting partition is arranged longitudinally inside the battery box, and the stacking connector is installed at the upper and lower ends of the mounting partition, respectively. The stacking connector is exposed on the upper and lower surfaces of the battery box.

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