Energy storage management system and method based on annularly distributed energy storage battery modules

Abstract

The invention discloses an energy storage management system and method based on annularly distributed energy storage battery modules, and relates to the technical field of energy storage, and the system comprises an annular physical architecture which is buried underground and is used for bearing battery boxes and is arranged in an annular shape; the heat dissipation system comprises a shallow liquid cooling device which is arranged on the annular physical framework and is communicated with the pipeline in the battery box; the control module is electrically connected to the shallow liquid cooling device and the battery box; the annular physical framework comprises a vertically-arranged middle column, framework discs fixed around the middle column and isolation walls arranged on the framework discs, the multiple framework discs are arranged in the length direction of the middle column, and the isolation walls extend in the radial direction of the framework discs; a plurality of separating walls are distributed on each framework disc, and a plurality of fan-shaped structure areas for mounting battery boxes are separated by matching with the separating walls. According to the invention, security threats generated after a plurality of batteries break down are smaller, and the use security of the batteries in an energy storage scene is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to an energy storage management system and method based on a ring-distributed energy storage battery module. BACKGROUND

[0002] At present, energy storage systems are widely used in various wind power generation, solar power generation and other scenes, and can cooperate with related power facilities to temporarily store and redistribute energy.

[0003] A major problem faced by existing energy storage systems is safety. News reports occasionally report incidents of fires in electric vehicles and warehouses due to battery module failures. The scale of battery modules in energy storage systems in wind power and other scenarios is relatively larger, which has brought a lot of negative impact on the use and promotion of energy storage systems. For this reason, many relevant units have begun to develop new energy storage technologies and have introduced, for example, flow batteries and energy storage battery intelligent monitoring systems.

[0004] However, the above-mentioned technologies either deviate from the traditional battery category or only remind staff before and after the battery may cause a fire, and the safety needs to be improved when a real battery explosion accident occurs. Therefore, the present application proposes a new technical solution. SUMMARY

[0005] In order to make the safety threat caused by many battery failures smaller and improve the safety of batteries in energy storage scenarios, the present application provides an energy storage management system and method based on a ring-distributed energy storage battery module.

[0006] In a first aspect, the present application provides an energy storage management system based on a ring-distributed energy storage battery module, which adopts the following technical solution: An energy storage management system based on a ring-distributed energy storage battery module, comprising: a ring-shaped physical architecture buried underground and used to carry battery boxes arranged in a ring shape; a heat dissipation system comprising a shallow liquid cooling device installed on the ring-shaped physical architecture and connected to the pipes in the battery boxes; and a control module electrically connected to the shallow liquid cooling device and the battery boxes; The ring-shaped physical architecture comprises a vertical column, an architecture disc fixed around the column, and a partition wall provided on the architecture disc. The architecture disc is arranged along the length direction of the column, and the partition wall extends along the radial direction of the architecture disc. A plurality of partition walls are distributed on each architecture disc and cooperate with the partition walls to divide a plurality of fan-shaped structure regions for installing battery boxes. The shallow liquid cooling device comprises a disc surface main pipe buried in the isolation wall, end pipes for connecting the disc surface main pipe and the battery box, and a liquid cooling power mechanism. The disc surface main pipe extends along the radial direction of the framework disc. The end pipes are multiple and divided into multiple groups. At least two groups of end pipes are distributed between two laterally adjacent isolation walls. Each battery box is connected to at least two groups of end pipes, and the two groups of end pipes are connected to different disc surface main pipes. The middle column is provided with a circulating channel extending in the height direction. The disc surface main pipe is connected to the circulating channel. The circulating channel is connected to the liquid cooling power mechanism. The liquid cooling power mechanism is electrically connected to the controller.

[0007] Optionally, the middle column comprises multiple axially inserted sub-columns. In the two adjacent sub-columns, the lower end of the upper sub-column is fixed with a plug-in head, and the upper end of the lower sub-column is provided with a plug-in slot. The plug-in head is inserted into the plug-in slot, and a shock buffering mechanism is arranged between the plug-in head and the plug-in slot. The shock buffering mechanism comprises a telescopic unit arranged in the plug-in slot and a pressure distribution tank arranged in the other sub-column above the plug-in slot. The telescopic unit is multiple and is distributed around the plug-in head. The telescopic unit comprises a reference box, a contact ball, and a piston block one. The piston block one is slidingly connected to the inner cavity of the reference box and slides in the radial direction of the middle column. The piston block one is fixed with a piston rod extending towards the plug-in head. The piston rod extends out of the reference box and is fixed with the contact ball. The contact ball abuts against the plug-in head. The inner cavity of the pressure distribution tank is divided into multiple sub-cavities. One reference box is matched with one sub-cavity. A piston block two is vertically slidingly connected in the sub-cavity. The circulating channel is multiple and is divided into two groups. One group is a lower circulating pipe, and the other group is an upper circulating pipe. The sub-cavity above the piston block two is connected between the lower circulating pipe and the upper circulating pipe. A primary electric valve is arranged on the pipe connecting the lower circulating pipe and the upper circulating pipe and on the disc surface main pipe. A pressure sensor is arranged on the pipe connecting the lower circulating pipe and the upper circulating pipe and on the disc surface main pipe.

[0008] Optionally, the primary electric valve on the pipe connecting the lower circulating pipe and the upper circulating pipe is an electric regulating valve.

[0009] Optionally, the heat dissipation system further comprises a deep layer liquid cooling mechanism. The deep layer liquid cooling mechanism comprises a heat exchanger, a deep layer pipe, and a deep layer power pump. The upper circulating pipe is two and is connected to two pipe interfaces of the heat exchanger at the lower end after extending out of the middle column. The deep layer pipe is located below the middle column and is in a U shape. The two ends of the deep layer pipe are connected to another group of pipe interfaces of the heat exchanger. At least one end of the deep layer pipe is connected to the heat exchanger through the deep layer power pump.

[0010] Optionally, the circulation channel is divided into multiple sub-channels along the axial direction of the central column and corresponds to each sub-column. One of the two adjacent sub-channels is called a variable diameter pipe. One end of the variable diameter pipe is formed into a pipe opening with an outward octagonal longitudinal section. A telescopic pipe is fixed around the outer edge of the outward octagonal pipe opening of the sub-channel. The telescopic pipe is inserted into a pre-set relief groove located on the adjacent sub-column. The diameter of the telescopic pipe is smaller than the relief groove and abuts against the bottom of the relief groove.

[0011] Optionally, the telescopic tube includes a fixed tube, a movable tube, and a reset unit. The fixed tube is fixed to the outer edge of the outer eight-port of the sub-channel. The movable tube is inserted into the fixed tube and axially slidably connected. One end of the movable tube extends out of the fixed tube, and an outwardly extending expansion plate is fixed to the outer edge of the port. The reset unit is disposed on the expansion plate and is used to drive the expansion plate to move axially along the fixed tube. The inner edge of the movable tube near the reducing pipe is provided with a force guiding structure for guiding the coolant to pressurize.

[0012] Optionally, the liquid cooling power mechanism includes a surface pump one, a surface pump two, and a water tank. The input port of the surface pump one is connected to the water tank, and its output port is connected to the upper end of the lower circulation pipe. The input port of the surface pump two is connected to the upper end of an upper circulation pipe, and its output port is connected to the water tank. The upper end of another upper circulation pipe is connected to the pipe between the surface pump two and the water tank. The water tank is equipped with a heat dissipation structure. A shut-off valve is installed on the pipe between the surface pump one, the surface pump two, the water tank, the upper circulation pipe, and the lower circulation pipe. The shut-off valve is electrically connected to the control module.

[0013] Optionally, the water tank is equipped with a partition, which divides the inner cavity of the water tank into two horizontal sections and connects to surface pump one and surface pump two, respectively. The partition has an overflow connection hole. A pH detection unit is installed in the inner cavity of the water tank connected to surface pump one and is connected to a water replenishment mechanism. A drain pipe is connected to the inner cavity of the water tank connected to surface pump two, and a drain valve is installed in the drain pipe. The pH detection unit and the drain valve are electrically connected to the control module.

[0014] Optionally, the control module is configured to: acquire battery monitoring data from the BMS module of the battery box, and execute at least preset battery fault alarm logic and heat dissipation control logic; wherein the battery monitoring data includes at least the voltage / current value of the battery cell and the temperature value of the battery cell / box.

[0015] Secondly, this application provides an energy storage management method based on a ring-shaped distributed energy storage battery module, which adopts the following technical solution: An energy storage management method based on a ring-shaped distributed energy storage battery module is provided, which uses an energy storage management system based on a ring-shaped distributed energy storage battery module as described in any one of the above methods for energy storage battery deployment and management.

[0016] In summary, this application includes the following beneficial technical effects: 1) The battery module is laid underground through a ring-shaped physical structure, so even if the battery overheats and explodes, it is safer than the battery on the ground. 2) The relatively integrated distribution of battery boxes around the central column can reduce the excavation area of ​​the pit. However, because there are isolation walls between the groups of battery boxes (partitions), even if the battery box in one partition fails, it is difficult to damage the battery boxes in other partitions. In fact, other partitions can operate normally after the circuit is cut off, resulting in better safety and performance. 3) The central column, the structural plate, and the isolation wall form a stable support system. Compared with placing the battery box directly into the ground, it can provide better protection for the battery box and has better earthquake resistance. 4) The energy storage system uses liquid cooling for heat dissipation, and the main parts of the liquid cooling pipes (panel main pipe and circulation channel) are embedded in the ring-shaped physical structure. Therefore, as long as there are valves between the panel main pipe and the end pipes, or even between the panel main pipe and the circulation channel, even if a battery in a certain zone is damaged by combustion or explosion, as long as the appropriate valve is closed, the cooling and heat dissipation circulation mechanism will not be broken, and the other battery packs in the energy storage system can continue to dissipate heat normally, thus making it safer. In summary, this application can reduce the safety threats posed by battery failures and improve their safety in energy storage scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the ring-shaped physical architecture; Figure 2 This is a schematic diagram of the battery pack being arranged in a ring-shaped physical structure; Figure 3 This is a partial front view of the ring-shaped physical architecture; Figure 4 This is a partial longitudinal section diagram of the isolation wall; Figure 5 This is a schematic diagram of the heat dissipation system; Figure 6 yes Figure 3 A schematic diagram of the longitudinal section structure; Figure 7 yes Figure 6 Enlarged schematic diagram of part A; Figure 8 This is a schematic diagram of the structure of a single architecture disk; Figure 9This is a schematic diagram of the control structure of the control module; Figure 10 This is a schematic diagram of the longitudinal section structure of the telescopic pipe area.

[0018] Explanation of reference numerals in the attached diagram: 1. Central column; 11. Sub-column; 12. Connector; 13. Slot; 14. Circulation channel; 15. Telescopic tube; 151. Fixed tube; 152. Movable tube; 153. Expansion plate; 154. Impact guiding structure; 16. Recessed groove; 2. Frame plate; 21. Side wall; 3. Isolation wall; 31. Upper wall; 32. Lower wall; 33. Insulation layer; 34. Main pipe on the plate surface; 35. End pipe; 4. Vibration buffer mechanism; 41. Reference box; 42. 43. Contact sphere; 44. Piston block one; 45. Piston rod; 46. Pressure distribution tank; 47. Piston block two; 48. Pressure generating unit; 59. Pressure sensor; 50. pH detection unit; 61. Alarm; 62. Touch display unit; 71. Surface pump one; 72. Surface pump two; 73. Water tank; 84. Primary solenoid valve; 85. Shut-off valve; 86. Drain valve; 97. Deep liquid cooling mechanism; 98. Heat exchanger; 99. Deep tube; 90. Deep power pump. Detailed Implementation

[0019] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0020] This application discloses an energy storage management system based on a ring-shaped distributed energy storage battery module.

[0021] Reference Figure 1 The energy storage management system based on ring-distributed energy storage battery modules includes: A ring-shaped physical structure, which is buried underground and used to support the battery boxes (packs) arranged in a ring shape; A heat dissipation system comprising a shallow liquid cooling device mounted on a ring-shaped physical structure and connected to pipes within the battery compartment; and, The control module is electrically connected to the shallow liquid cooling device and the battery box.

[0022] The control module in this system is divided into three parts: above ground, underground, and remote. Example: The underground section includes the battery box and BMS module; The above-ground portion includes a Distributed Intelligent Energy Manager (DIEM compartment) and a local controller. The compartment houses multiple PCS cabinets for energy storage, connected in parallel on the AC side to the low-voltage side of the transformer (compartment) battery port. The voltage is stepped up to 35kV and collected via cables to the 35kV busbar of the substation. The battery box is connected to the PCS cabinet, and the local controller is electrically connected to the BMS module of the PCS cabinet and battery box. The local controller can serve as the control core for multiple electronic devices, including PLC controllers, MCU controllers, and a host computer. The remote component includes a cloud platform built on a server, and the local controller connects to the cloud platform via a wireless communication module to facilitate remote monitoring by users.

[0023] Reference Figure 1 In this embodiment, the aforementioned ring-shaped physical structure includes a central column 1, a structural plate 2, and an isolation wall 3. All three components can be constructed of reinforced concrete and are formed after the excavated pit is backfilled and buried. The following is a detailed explanation: The central column 1 is a vertically arranged cylindrical shape, and its interior is formed with several channels and cavities through pre-embedding, pre-setting, etc., to cooperate with many other settings of this application; among them, the channels can include pipeline channels, that is, channels that can be used to run pipes and cables, because after the application of this application, the battery box is distributed around the central column 1, and it is convenient to run the cables using the central column 1 in the middle.

[0024] Reference Figure 2 The frame plate 2 is formed around the central column 1. It is a disc structure, and the upper part is used to support the battery boxes (packs) of the battery modules. An isolation wall 3 is fixed on the frame plate 2. One end of the isolation wall 3 is fixed to the central column 1, and its length extends radially along the central column 1. There are multiple isolation walls 3, which are evenly distributed around the frame plate 2 to separate fan-shaped structural areas for installing battery boxes.

[0025] There can be multiple architecture panels 2, and the specific number can be set according to the scale of energy storage on site: when there are multiple architecture panels 2, the multiple architecture panels 2 are arranged vertically along the length of the central column 1, and the isolation wall 3 located below the architecture panels 2 supports the architecture panels 2 above.

[0026] Based on the above settings, this system has the following effects: 1) The battery module is laid underground through a ring-shaped physical structure, so even if the battery overheats and explodes, it is safer than the battery on the ground. 2) The battery boxes are distributed around the central column 1 in a relatively integrated manner, which can reduce the excavation area of ​​the pit. However, because there is an isolation wall 3 between the groups of battery boxes (partitions), even if the battery box in one partition fails, it is difficult to damage the battery boxes in other partitions. Even after the circuit is cut off, other partitions can still operate normally, resulting in better safety and performance. 3) The central column 1, the structural plate 2, and the isolation wall 3 form a stable support system. Compared with placing the battery box directly into the ground, it can provide better protection for the battery box and has better earthquake resistance.

[0027] Reference Figure 3In one embodiment, the longitudinal section of the isolation wall 3 on the uppermost structural plate 2 gradually decreases in height from the central column 1 outwards; the isolation wall 3 between two adjacent structural plates 2 is called a type of wall, which includes an upper wall 31 and a lower wall 32 that are distributed vertically and connected to each other. The longitudinal section of the upper wall 31 and the lower wall 32 is a trapezoid with short bases connected to each other, and the length of the upper wall 31 is less than the length of the lower wall.

[0028] The above design not only repeatedly strengthens the connection and structural strength of the central column 1 and the frame plate 2, but also reduces the overall material usage.

[0029] Reference Figure 4 In this embodiment, the heat dissipation system includes a shallow liquid cooling device installed in the ring-shaped physical structure and connected to the pipes (i.e., coolant circulation channels) in the battery box. The shallow liquid cooling device includes: The main pipe 34 and the end pipe 35 are arranged in a panel. The main pipe 34 is embedded in the partition wall 3 and extends radially along the frame panel 2. The main pipe 34 is located at the lower part of the partition wall 3 so as to connect to the end pipe 35.

[0030] There are multiple end pipes 35 and they are divided into multiple groups. Each sector structure area between the isolation walls 3 has at least two groups of end pipes 35. One end of the end pipe 35 is connected to the main plate pipe 34, and the other end is used to connect to the pipes in the battery box. Each battery box is connected to at least two groups of end pipes 35. Taking two groups as an example, the liquid outlet of the battery box is connected to one group, and the liquid inlet is connected to the other group, thus forming a cooling cycle. These two groups of end pipes 35 are connected to different main plate pipes 34.

[0031] Reference Figure 5 A circulation channel 14 is provided axially inside the central column 1. There are multiple circulation channels 14, divided into two groups. One group is used to send coolant downward and is called the lower circulation pipe, and the other group is used to send coolant upward and is called the upper circulation pipe. According to the above arrangement, part of the main pipe 34 on the plate is used to send coolant in and part is used to send coolant out. These two parts of the pipe correspond to a group of circulation channels 14 respectively.

[0032] Reference Figure 5 The shallow liquid cooling device also includes a liquid cooling power mechanism, which is installed on the ground and includes a surface pump 71, a surface pump 72, and a water tank 73. The input port of the surface pump 71 is connected to the lower part of the water tank 73 via a pipe, and the output port is connected to the upper end of the lower circulation pipe via a pipe. The input port of the surface pump 72 is connected to the upper end of an upper circulation pipe via a pipe, and the output port is connected to the water tank 73 via a pipe.

[0033] Understandably, because the liquid in water tank 73 needs to be cooled, the pumped-back liquid (e.g., water) needs to dissipate heat. Therefore, water tank 73 can have a large number of heat dissipation structures installed on its outer wall, such as heat sinks, or even the heat sinks can be directly inserted into the continuously flowing, low-temperature water. The aforementioned surface pump 1 71 and surface pump 2 72 are electrically connected to the control module (field controller) for intelligent control.

[0034] According to the above configuration, the heat dissipation method of the energy storage battery is liquid cooling, and the main part of the liquid cooling pipeline (panel main pipe 34, circulation channel 14) is embedded in the ring-shaped physical structure. Therefore, as long as there is a valve between the pan main pipe 34 and the end pipe 35, or even between the pan main pipe 34 and the circulation channel 14, even if the battery in a certain zone is damaged by combustion or explosion, as long as the appropriate valve is closed, the cooling and heat dissipation circulation mechanism will not be broken, and the other battery packs of the energy storage system can continue to be used for heat dissipation normally, thus making the safety higher.

[0035] In one embodiment, the outer wall of the aforementioned main pipe 34 is provided with a flexible buffer layer. The installation method is as follows: a wooden stick with a diameter larger than that of the main pipe 34 is buried between the isolation walls 3 of the poured concrete structure. After the concrete has cured, the stick is removed, leaving a hole. The outer side of the main pipe 34 is protected with geotextile or similar materials as a flexible buffer layer, and the material is inserted through the hole.

[0036] According to the above configuration, the main pipe 34 and the concrete structure of the isolation wall 3 are not rigidly connected, so the main pipe 34 is relatively less likely to be damaged when the foundation is subjected to geological changes or thermal expansion and contraction due to temperature.

[0037] Reference Figure 4 In another embodiment, the system further includes a heat insulation layer 33, which may be composed of heat insulation cotton / cloth sandwiched in a composite board.

[0038] During installation, the insulation layers 33 are arranged in pairs. One set of insulation layers 33 is embedded in one isolation wall 3. The two insulation layers 33 in the same set are arranged along the thickness of the isolation wall 3. At least one panel main pipe 34, called the liquid outlet pipe, is installed between the two insulation layers 33 in the same set. At least one panel main pipe 34, called the liquid inlet pipe, is installed outside the two insulation layers 33 in the same set.

[0039] Based on the above configuration, firstly, the isolation wall 3 in this architecture is not merely used for physical isolation to prevent a chain reaction of safety accidents after a battery explosion, or to strengthen the structural strength of the architecture. It also works in conjunction with the heat insulation layer 33 to achieve thermal isolation between the various sector-shaped structural areas, i.e., the battery module sections, thereby reducing thermal interference between the battery module sections and ensuring effective heat dissipation under various heat distribution conditions. Secondly, the inlet and outlet manifolds 34 can share the same isolation wall, resulting in a more compact structure while maintaining thermal isolation between them. Therefore, interference between the coolant inlet and outlet is reduced, leading to stronger heat dissipation capabilities.

[0040] Reference Figure 6 , Figure 7 and Figure 8 In another embodiment, the central column 1 is not a single column, but a spliced ​​column structure. That is, the central column 1 includes multiple axially interlocking sub-columns 11. Taking two vertically adjacent sub-columns 11 as an example: the lower end of the upper sub-column 11 is fixed with a connector 12, and the upper end of the lower sub-column 11 is formed with a slot 13. After installation, the connector 12 is inserted into the slot 13.

[0041] In this embodiment, the plug 12 is a cylinder with a diameter smaller than that of the slot 13, and a vibration buffer mechanism 4 is provided between the inner walls of the plug 12 and the slot 13.

[0042] It is understandable that, since the central column 1 has been divided into sub-columns 11, in order to ensure that the original isolation wall 3 does not affect the fixing effect on the structural plate 2, at least one structural plate 2 is fixed on each sub-column 11, and an upper wall 31 is fixed below the structural plate 2.

[0043] Based on the above setup: First, this application no longer requires on-site casting, but can prefabricate the sub-columns 11 in sections and then transport them to the site for splicing, so as to shorten the construction period and improve construction efficiency; Second, after the sub-columns 11 are spliced, there is a vibration buffer mechanism 4 between them, so even if the number of layers of the structure plate 2 is relatively large, resulting in a large length of the sub-columns 11, the probability of the central column 1 being broken is relatively small due to uneven stress caused by geological changes in the underground. Therefore, the underground structure safety of the energy storage system is relatively higher.

[0044] Reference Figure 6 and Figure 7 In this embodiment, the vibration buffer mechanism 4 includes a telescopic unit and a pressure distribution tank 44, wherein the telescopic unit includes a reference box 41, a contact ball 42, and a piston block 43.

[0045] Multiple reference boxes 41 are located within slots 13 and surround connectors 12, and are fixed to slots 13. A piston block 43 is slidably connected to the inner cavity of the reference box 41, and the sliding direction is radial to connectors 12. A piston rod 431 is fixed on the side of piston block 43 facing connectors 12, the piston rod 431 extends out of the reference box 41 and is fixedly contacting ball 42, the contacting ball 42 abutting against connectors 12.

[0046] The pressure distribution tank 44 is embedded in the sub-pillar 11 and located above the slot 13, that is, it is installed in another sub-pillar 11 above. The reference box 41 is connected to the pressure distribution tank 44 through a pipe, and the pressure distribution tank 44 is connected to the pressure generating unit 45.

[0047] Reference Figure 5 and Figure 8 The inner cavity of the aforementioned pressure distribution tank 44 is divided into multiple sub-cavities. Each reference box 41 is matched with at least one sub-cavity, and the sub-cavities are filled with liquid. A piston block 441 is vertically slidably connected in the sub-cavities. The section of the sub-cavity above the piston block 441 is connected in series between the lower circulation pipe and the upper circulation pipe. That is, each sub-cavity of the pressure distribution tank 44 has two pipe joints, which are respectively connected to the adjacent lower circulation pipe and upper circulation pipe through pipes. A primary electric valve 81 is installed on the pipes connecting the lower circulation pipe and the upper circulation pipe in the sub-cavities and on the main pipe 34 of the panel. A valve can also be installed at the end where the aforementioned end pipe 35 connects to the main pipe 34 of the panel, and it becomes a secondary valve.

[0048] Reference Figure 9 A pressure sensor 51 is installed on a section of the sub-cavity located below piston block 441. The primary solenoid valve 81 and the pressure sensor 51 are electrically connected to the control module. The control module can also be electrically connected to an alarm 61 and a touch display unit 62. The alarm 61 can be an audible and visual alarm to alert nearby staff when the system requires it. The touch display unit 62 can be a touch screen or a display with multiple function buttons to facilitate user operation.

[0049] Usage: When two adjacent sub-pillars 11 undergo lateral displacement, the connector 12 will drive the contact ball 42 to move, which in turn drives the piston block 43 to move and compress the liquid / gas in the reference box 41 via the piston rod 431. This changes the pressure distribution of each sub-cavity in the pressure distribution tank 44 and changes the position of the piston block 441. During this process, the pressure sensor 51 detects the pressure change. Therefore, by actively applying force to the piston block 441, the telescopic unit can be reset to push the connector 12, i.e., the sub-pillar 11, back.

[0050] As can be seen from the above settings, this system does not require a separate hydraulic power system to drive the piston block 441. Instead, it utilizes the structural characteristics of the ring-shaped physical structure and the shallow liquid cooling device to directly connect the pressure distribution tank 44 in series. This allows the coolant to be used for cooling under normal circumstances, while it can be used to drive the piston block 441 when the sub-column 11 needs to be adjusted. This dual-purpose system simplifies the structure and reduces equipment costs.

[0051] Regarding how to push piston 441, for example: close the first-stage electric valve 81 between the main pipe 34, the sub-cavity and the upper circulation pipe, and open the first-stage electric valve 81 between the sub-cavity and the lower circulation pipe.

[0052] In another embodiment, the three primary electric valves 81 mentioned above can be normally open to cope with minor vibrations and shocks to the central column 1.

[0053] Correspondingly, the first-stage electric valve 81 on the pipe connecting the lower circulation pipe to the sub-cavity is an electric regulating valve, that is, a valve structure that can adjust the effective flow diameter (opening degree).

[0054] Therefore, for pressure changes caused by smaller impacts, it is no longer necessary to adjust parameters such as the power of the pump. Instead, it is only necessary to adjust the opening of the first-stage electric valve 81, that is, the effective diameter of the pipe section, to change the pressure of the sub-cavity above the piston block 441, thereby moving the piston block 441 to drive the telescopic unit to make fine adjustments.

[0055] Reference Figure 5 In another embodiment, the heat dissipation system further includes a deep liquid cooling mechanism 9, which includes a heat exchanger 91, a deep tube 92, and a deep power pump 93.

[0056] In this embodiment, there are two upper circulation pipes, and their lower ends are connected to two pipe interfaces of the heat exchanger 91 after extending out of the central column 1. It can be understood that the heat exchanger 91, as a heat exchange device, has at least two sets, each set with two pipe interfaces, one set for the cold medium to enter and the other set for the hot medium to enter to achieve heat exchange. This is the prior art and will not be described in detail here.

[0057] The deep tube 92 is located below the central column 1 and is U-shaped. For example, it is inserted into the borehole after underground drilling and extends 10-100m underground. The two ends of the deep tube 92 are respectively connected to the second set of interfaces of the heat exchanger 91. At least one end of the deep tube 92 is connected to the heat exchanger 91 through the deep power pump 93, that is, the deep power pump 93 is connected in series on the pipe.

[0058] Understandably, the deep power pump 93 and heat exchanger 91 can be installed in the lower region of the annular physical structure, or even on the lowest layer of the structure disk 2.

[0059] Based on the above setup, on the one hand, this system only needs to adjust the connection position of the upper ends of the two upper circulation pipes with coils and valves on the ground to achieve the adjustment of the inlet and outlet of the liquid. This allows the coolant with a higher temperature coming out of the battery box to first pass through the heat exchanger 91, utilize the low temperature deep in the earth for heat dissipation, and then flow back to the ground. On the other hand, when one of the lower circulation pipes malfunctions or needs to be disconnected from the battery box for independent pressure adjustment, this system can still dissipate heat from the battery.

[0060] Reference Figure 5 In one embodiment, the input port of the second surface pump 72 is connected to the upper end of an upper circulation pipe and the output port is connected to the water tank 73, and the upper end of another upper circulation pipe is connected to the pipe between the second surface pump 72 and the water tank 73.

[0061] A shut-off valve 82 is installed on the pipeline between surface pump 1 71, surface pump 2 72, water tank 73, upper circulation pipe, and lower circulation pipe. The shut-off valve 82 is electrically connected to the control module.

[0062] Based on the above setup, by simply cutting off one of the water tank 73 and the surface pump 72, a single-sided liquid cooling circulation can be achieved using the surface pump 72 and two upper circulation pipes to meet the heat dissipation requirements under greater demand and ensure the safety of the energy storage battery.

[0063] Reference Figure 10 In another embodiment, the circulation channel 14 is divided into multiple sub-channels along the axial direction of the central column 1 and each sub-column 11 corresponds to a sub-channel, that is, one sub-column 11 corresponds to one sub-channel.

[0064] One of the two adjacent sub-channels is called a variable diameter pipe. One end of the variable diameter pipe is formed into a pipe opening with an outward octagonal cross section, and a telescopic pipe 15 is fixed around the outer edge of the outward octagonal pipe opening of the sub-channel. A relief groove 16 is formed at the end of the adjacent sub-column 11. The relief groove 16 is located on the side of the aforementioned slot 13. The telescopic pipe 15 is inserted into the relief groove 16. The diameter of the telescopic pipe 15 is smaller than that of the relief groove 16 and abuts against the bottom of the relief groove 16.

[0065] As can be seen from the setup, the circulation channel 14 is not formed by a single pipe structure. It is matched with a non-integral central column 1. Therefore, when the sub-column 11 is subjected to force and shifts, it will not directly cause the circulation channel 14 to break. The circulation channel 14 allows lateral displacement between the sub-columns 11 and can always maintain the interconnection between the channels of different sub-columns 11, that is, maintain the normal flow of coolant without being affected. Furthermore, it should be noted that the connection between the sub-channels is not made using simple hoses, because the aforementioned integrated dual-function coolant design of this system involves a pressurization phase, and hoses are prone to bursting and obstructing the aforementioned functions.

[0066] It is understandable that the flat plate structure can be fixed to the facing ends of the adjacent sub-columns 11 and a sealing sheet can be added between them; the above-mentioned telescopic tube 15 is set in order to achieve a double sealing effect.

[0067] The telescopic tube 15 includes a fixed tube 151, a movable tube 152, and a reset unit. The fixed tube 151 is fixed to the outer edge of the outer eight-port of the sub-channel. The movable tube 152 is inserted into the fixed tube 151 and axially slidably connected. One end of the movable tube 152 extends out of the fixed tube 151, and an outwardly extending expansion plate 153 is fixed to the outer edge of the port. The reset unit is disposed on the expansion plate 153 and is used to drive the expansion plate 153 to move axially along the fixed tube 151. The inner edge of the movable tube 152 near the reducing pipe is fixed with a force guiding structure 154 for guiding the coolant to pressurize. The force guiding structure 154 can be a ring structure or the inner diameter of the movable tube 152 gradually decreases from one end to the other.

[0068] According to the above configuration, on the one hand, as long as the coolant flows from the outer eight-pipe inlet to the movable pipe 152, the coolant will impact the force guiding structure 154 when it flows, pushing it to move the movable pipe 152 away from the fixed pipe 151, that is, towards the bottom of the relief groove 16, so as to ensure the sealing between the movable pipe 152 and the relief groove 16. The greater the coolant flow rate, the stronger the seal. On the other hand, if the force of the coolant is insufficient, there is also a reset unit to make the movable pipe 152 meet the resistance requirements. This double protection makes the performance even better.

[0069] Understandably, in order to enhance the sealing effect, the port of the movable tube 152 can be configured to be recessed to form a groove, and a sealing ring can be inserted into the groove.

[0070] In this embodiment, the reset unit has two options: The first type includes a spring, one end of which is fixed to the extension plate 153, and the other end is fixed to the outer wall of the fixing tube 151 or the end of the sub-column 11. The second type includes a resetting unit comprising a pneumatic or hydraulic telescopic unit, such as a cylinder or hydraulic cylinder, with the cylinder body fixed to the extension plate 153 and the end of the telescopic rod abutting against the sub-column 11.

[0071] According to the above settings, the reset unit can push the movable tube 152, and the spring is relatively uncontrollable. Alternatively, remote control can be achieved by connecting to the control module.

[0072] Reference Figure 5In another embodiment, a vertical partition is fixed inside the water tank 73, which divides the inner cavity of the water tank 73 into two horizontal sections and connects to surface pump 71 and surface pump 72 respectively. Multiple overflow connection holes are provided in the upper middle part of the partition. A pH detection unit 52 (with the probe of the detector extending into it) is installed in the inner cavity of the water tank 73 connected to surface pump 71 and is connected to a water replenishment mechanism. An example of the water replenishment mechanism is a pipe connected to the water source and valves and pumps on the pipe.

[0073] The bottom of the inner cavity of the water tank 73 connected to the surface pump 72 is connected to a drain pipe, and a drain valve 83 is installed on the drain pipe. The pH detection unit 52 and the drain valve 83 are electrically connected to the control module.

[0074] Based on the above settings, this system can detect the pH value of the coolant and replace it when the pH value is not up to standard, thereby reducing the damage to pipeline facilities and the impact on heat dissipation effect of the coolant.

[0075] In another embodiment, the control module is configured to: acquire battery monitoring data from the BMS module of the battery box, and execute at least preset battery fault alarm logic and heat dissipation control logic; wherein, the battery monitoring data includes at least the voltage / current value of the battery cell and the temperature value of the battery cell / box.

[0076] Example of battery fault alarm logic: When the voltage / temperature of a single battery cell, i.e. a battery cell in the battery box, exceeds the preset standard threshold or safety (maximum allowable) threshold, the corresponding alarm information is output in a timely manner; the same applies to the battery box.

[0077] Example of heat dissipation control logic: When the temperature of a battery box exceeds the preset standard temperature threshold, the above pump is controlled to increase its power, that is, to accelerate heat dissipation by accelerating the flow of liquid.

[0078] It is understandable that, based on the control module composition of this system, it can also be used for: Real-time monitoring of the operating status, working status, power, SOC, SOH, and alarm information of each energy storage device; energy storage working status, energy storage charge and discharge capacity, maximum charge and discharge capacity of energy storage, and energy storage power station scale information; The system monitors the main operating status of the energy storage system's AGC / AVC, such as the current strategy mode, remote and local status, AGC target value, actual AGC value, maximum allowable charging and discharging power, total station SOC, and SOC upper and lower limits. Depending on different control requirements, the system can be configured with multiple operating modes, such as peak-valley arbitrage, follow-up scheduling, planned curve, smoothing mode, microgrid mode, automatic voltage regulation, and reactive power regulation. The system can automatically or manually adjust the control strategy according to different operating conditions and provide dynamic indications on the interface.

[0079] This application also discloses an energy storage management method based on a ring-shaped distributed energy storage battery module.

[0080] The energy storage management method based on ring-distributed energy storage battery modules is applied to the energy storage management system based on ring-distributed energy storage battery modules described above for the deployment and management of energy storage batteries. The structure and usage of this system have been described above, so they will not be repeated here.

[0081] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An energy storage management system based on a ring-shaped distributed energy storage battery module, characterized in that, include: The ring-shaped physical structure is buried underground and is used to support the battery boxes arranged in a ring shape. The heat dissipation system includes a shallow liquid cooling device installed in a ring-shaped physical structure and connected to pipes in the battery compartment. as well as, The control module is electrically connected to the shallow liquid cooling device and the battery box; The ring-shaped physical architecture includes a vertically arranged central column (1), an architecture plate (2) fixed around the central column (1), and an isolation wall (3) set on the architecture plate (2). There are multiple architecture plates (2) arranged along the length of the central column (1), and the isolation wall (3) extends radially along the architecture plate (2). Multiple isolation walls (3) are distributed on each architecture plate (2), and the isolation walls (3) are used to separate multiple fan-shaped structural areas for installing battery boxes. The shallow liquid cooling device includes a main pipe (34) embedded in the isolation wall (3), an end pipe (35) for connecting the main pipe (34) and the battery box, and a liquid cooling power mechanism. The main pipe (34) extends radially along the frame plate (2). There are multiple end pipes (35) divided into multiple groups. At least two groups of end pipes (35) are distributed between two horizontally adjacent isolation walls (3). Each battery box is connected to at least two groups of end pipes (35), and the two groups of end pipes (35) are connected to different main pipes (34). The central column (1) is provided with a circulation channel (14) extending along the height direction. The main pipe (34) of the disc is connected to the circulation channel (14). The circulation channel (14) is connected to the liquid cooling power mechanism. The liquid cooling power mechanism is electrically connected to the controller.

2. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 1, characterized in that: The central column (1) includes multiple axially interlocked sub-columns (11). In two adjacent sub-columns (11), the lower end of the upper sub-column (11) is fixed with a connector (12), and the upper end of the lower sub-column (11) is provided with a slot (13). The connector (12) is inserted into the slot (13) and a vibration buffer mechanism (4) is provided between them. The vibration buffer mechanism (4) includes a telescopic unit disposed in the slot (13) and a pressure distribution tank (44) in another sub-column (11) located above the slot (13). The telescopic unit is multiple and distributed around the plug (12). The telescopic unit includes a reference box (41), a contact ball (42), and a piston block (43). The piston block (43) is slidably connected to the inner cavity of the reference box (41) and the sliding direction is radial to the central column (1). The piston block (43) is fixed with a piston rod (431) extending toward the plug (12). The piston rod (431) extends out of the reference box (41) and fixes the contact ball (42). The contact ball (42) abuts against the plug (12). The inner cavity of the pressure distribution tank (44) is divided into multiple sub-cavities. Each reference box (41) is matched with at least one sub-cavity. A piston block (44) is vertically slidably connected in the sub-cavity. The circulation channel (14) consists of multiple channels and is divided into two groups, one group being the lower circulation pipe and the other group being the upper circulation pipe; the sub-cavity is connected in series between the lower circulation pipe and the upper circulation pipe at a section above the piston block (44); a first-level electric valve (81) is installed on the pipe connecting the lower circulation pipe and the upper circulation pipe and on the main pipe (34) of the disc surface. A pressure sensor (51) is installed on a section of the sub-cavity located below the piston block 2 (44). The primary electric valve (81) and the pressure sensor (51) are electrically connected to the control module.

3. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 2, characterized in that: The primary electric valve (81) on the pipe connecting the lower circulation pipe to the sub-cavity is an electric regulating valve.

4. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 2, characterized in that: The heat dissipation system also includes a deep liquid cooling mechanism (9), which includes a heat exchanger (91), a deep tube (92), and a deep power pump (93). The upper circulation tube consists of two tubes, and their lower ends are connected to two tube interfaces of the heat exchanger (91) after extending out of the central column (1). The deep tube (92) is located below the central column (1) and is U-shaped. Both ends of the deep tube (92) are connected to another set of pipe interfaces of the heat exchanger (91). At least one end of the deep tube (92) is connected to the heat exchanger (91) through the deep power pump (93).

5. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 2, characterized in that: The circulation channel (14) is divided into multiple sub-channels along the axial direction of the central column (1) and corresponds to each sub-column (11). One of the two adjacent sub-channels is called a variable diameter pipe. One end of the variable diameter pipe is formed into a pipe opening with an outward octagonal longitudinal section. A telescopic pipe (15) is fixed around the outer edge of the outward octagonal pipe opening of the sub-channel. The telescopic pipe (15) is inserted into a pre-set relief groove (16) located on the adjacent sub-column (11). The diameter of the telescopic pipe (15) is smaller than that of the relief groove (16) and abuts against the bottom of the relief groove (16).

6. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 5, characterized in that: The telescopic tube (15) includes a fixed tube (151), a movable tube (152), and a reset unit. The fixed tube (151) is fixed to the outer edge of the outer eight-port of the sub-channel. The movable tube (152) is inserted into the fixed tube (151) and axially slidably connected. One end of the movable tube (152) extends out of the fixed tube (151), and an outwardly extending expansion plate (153) is fixed to the outer edge of the port. The reset unit is disposed on the expansion plate (153) and is used to drive the expansion plate (153) to move axially along the fixed tube (151). The inner edge of the movable tube (152) near the variable diameter pipe is provided with a force guiding structure (154) for guiding the coolant to pressurize.

7. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 4, characterized in that: The liquid cooling power mechanism includes a surface pump one (71), a surface pump two (72), and a water tank (73). The input port of the surface pump one (71) is connected to the water tank (73), and the output port is connected to the upper end of the lower circulation pipe. The input port of the surface pump two (72) is connected to the upper end of an upper circulation pipe, and the output port is connected to the water tank (73). The upper end of another upper circulation pipe is connected to the pipe between the surface pump two (72) and the water tank (73). The water tank (73) is equipped with a heat dissipation structure. A shut-off valve (82) is installed on the pipe between the surface pump one (71), the surface pump two (72), the water tank (73), the upper circulation pipe, and the lower circulation pipe. The shut-off valve (82) is electrically connected to the control module.

8. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 7, characterized in that: The water tank (73) is equipped with a partition, which divides the inner cavity of the water tank (73) into two horizontal sections and connects to surface pump one (71) and surface pump two (72) respectively. An overflow connection hole is provided on the partition. A pH detection unit (52PH) is installed in the inner cavity of the water tank (73) connected to surface pump one (71) and is connected to a water replenishment mechanism. A drain pipe is connected in the inner cavity of the water tank (73) connected to surface pump two (72). A drain valve (83) is installed in the drain pipe. The pH detection unit (52PH) and the drain valve (83) are electrically connected to the control module respectively.

9. The energy storage management system based on a ring-shaped distributed energy storage battery module according to claim 4, characterized in that, The control module is configured to: acquire battery monitoring data from the BMS module of the battery box, and execute at least preset battery fault alarm logic and heat dissipation control logic; wherein, the battery monitoring data includes at least the voltage / current value of the battery cell and the temperature value of the battery cell / box.

10. An energy storage management method based on a ring-shaped distributed energy storage battery module, characterized in that: The energy storage battery deployment and management are carried out using the energy storage management system based on the ring-shaped distributed energy storage battery module as described in any one of claims 1-9.

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