Combined buried energy storage tank

Abstract

The utility model discloses a combined type buried energy storage box relates to buried energy storage technical field, including box and be used to connect each battery's bus, be provided with electrical partition, unit partition device and environment detection module in the box, and unit partition device includes fixed partition, linear drive unit no.

Description

Technical Field

[0001] This application relates to the field of underground energy storage technology, and in particular to a combined underground energy storage box. Background Technology

[0002] Currently, due to considerations such as safety and energy conservation, a new type of energy storage solution has been proposed in the market: underground energy storage design.

[0003] Compared to placing energy storage modules (boxes) above ground, buried energy storage has a lower risk of fire due to the low-oxygen environment underground, and the ambient temperature is more stable, reducing heat dissipation energy consumption. However, precisely because the integrated battery pack enclosure is underground, the repair cycle is relatively longer in case of failure. This can affect the user's income when used in conjunction with a photovoltaic system. Moreover, if the failure occurs during a period when the user is highly dependent on the energy storage module, it can also disrupt the user's daily production and life. Therefore, this application proposes a new technical solution. Utility Model Content

[0004] To mitigate the adverse effects of underground energy storage module failures, this application provides a combined underground energy storage box.

[0005] This application provides a combined underground energy storage box, which adopts the following technical solution: A modular underground energy storage box includes a box body and a busbar for connecting various batteries. One end of the inner cavity of the box body is open and covered with a suitable box cover. The box body is provided with an electrical partition, a unit partition device and an environmental monitoring module. The electrical partition is arranged along the width of the box body and divides the inner cavity of the box body into an electrical installation area and a battery pack installation area. The electrical installation area is located at the end of the battery pack installation area facing the box cover. The unit partition device includes a fixed partition, a linear drive unit, a movable partition, and a jumper mechanism. There are multiple fixed partitions arranged along parallel electrical partitions. The multiple fixed partitions are arranged along the length of the housing and divide the battery pack installation area into sub-areas. The environmental monitoring module includes multiple environmental monitoring sub-units distributed in each sub-area. The linear drive unit is installed on the inner top of the housing and the driving direction is parallel to the length direction of the housing. The linear drive unit has two synchronous / asynchronous moving drive parts. Each drive part of the linear drive unit is equipped with a movable partition. The movable partition is located above the fixed partition and is used to fall above the fixed partition to cooperate with the fixed partition to separate the battery pack installation area. The jumper mechanism is connected to the busbar and the top of the housing, and is used to cut the busbar between the two movable partitions when the two movable partitions fall on the fixed partition, and to connect the busbars on opposite sides of the two movable partitions.

[0006] Optionally, a support plate is provided on the upper part of the fixed partition plate along the width direction, and the busbar falls on the support plate and is divided into multiple unit lines A along the length direction of the box; The partition plate has an open mounting groove, and an insulating base is provided above the groove opening. A reset spring is provided at the bottom of the insulating base. A conductive terminal B is fixed on the insulating base. Contact plates are fixed at both ends of the terminal B. The middle of the contact plate protrudes outward. The opposing ends of adjacent unit lines A abut against the terminal plates at both ends of the terminal B. The movable partition includes partition A and partition B, which are distributed vertically and slidably connected. Partition A is provided with a lifting unit for driving partition B to move downward and pressing down terminal B.

[0007] Optionally, the lifting unit includes a syringe unit, a medium tank, and a solenoid valve. The piston rod of the syringe unit is vertical and the outer rod end is fixed to a partition B. The medium tank is installed in the electrical installation area and is used to fill the medium. The medium tank is provided with a pipe that connects to the cavity of the syringe unit and a solenoid valve is installed on the pipe. The solenoid valve is a normally closed solenoid valve and is fixed to the partition A.

[0008] Optionally, a pump is installed on the pipeline of the medium tank.

[0009] Optionally, the jumper mechanism includes a jumper conductive plate and a contact. The jumper conductive plate is fixed to the inner top of the housing and arranged along the length direction. The contact is disposed on the partition A and is used to abut against the jumper conductive plate. Two partitions B are arranged one behind the other and opposite to each other, and each is provided with a connector rod. One end of the connector rod is downward and fixed with a conductive arc plate. The arc opening of the arc plate is downward and located directly above the busbar. A section of the end of the unit line A exposes the metal core. The contact and the connector rod are connected by a wire.

[0010] Optionally, the connector rod is vertically slidably connected to the partition B, and the partition B is provided with a return spring II for driving the connector rod to rise and fall.

[0011] Optionally, the wire between the contact and the connector rod on the same movable partition is a spring wire or the wire length is greater than the maximum distance between them.

[0012] Optionally, the environmental detection subunit includes a temperature sensor, and there are multiple temperature sensors, which are respectively fixed on the plate surface in the thickness direction of the separator and on the upper part of the battery in each sub-area. The separator is a composite plate with at least three layers, and the middle layer is at least a heat insulation plate. The heat insulation plate has high temperature resistant and flame retardant layers on both sides.

[0013] In summary, this application includes the following beneficial technical effects: the environmental detection module detects the environmental status within the battery pack installation area. If an overheating occurs in a sub-area where a battery pack is located, the linear drive unit drives two movable partitions to move above the battery pack and settle on the top of the corresponding fixed partition, separating the battery pack in the overheated area from the battery packs in other normal areas. This encloses the battery pack in the overheated area within the space formed by the two movable partitions and the corresponding fixed partition. At the same time, the jumper mechanism cuts off the busbar between the two movable partitions, allowing the current to bypass the fault area and continue to conduct the busbar, thereby reducing the adverse effects of overheating faults in some battery packs on the entire energy storage box. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0015] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0016] Figure 3 This is a partial schematic diagram of unit line A in an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Box cover; 12. Base plate; 13. Electrical partition; 2. Fixed partition; 3. Linear drive unit one; 4. Movable partition; 5. Jumper mechanism; 21. Support plate; 22. Mounting slot; 23. Insulating base; 24. Return spring one; 25. Terminal B; 26. Contact plate; 41. Partition A; 42. Partition B; 43. Injector unit; 431. Sleeve rod; 432. Piston rod; 51. Jumper conductive plate; 52. Contact; 53. Connector rod; 54. Arc plate; 55. Return spring two. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0019] This application discloses a combined underground energy storage box.

[0020] Reference Figure 1 The modular underground energy storage box includes a box body 1 and a busbar for connecting each battery. The box body 1 has a cuboid structure. One end of the inner cavity of the box body 1 is open and covered with a suitable box cover 11. The bottom of the inner cavity of the box body 1 is fixed with an insulating base plate 12 for supporting the battery pack. Therefore, the battery pack is arranged on the base plate 12 along the length of the box body 1. At the same time, there is a space between the top surface of the battery pack and the inner top of the box body 1. A busbar arranged along the length of the box body 1 is introduced into this space. The busbar is connected to the terminal block on the top surface of the battery pack for transmitting electrical energy.

[0021] The enclosure 1 is equipped with an electrical partition 13, a unit partition device, and an environmental monitoring module. The electrical partition 13 is arranged along the width of the enclosure 1 and divides the inner cavity of the enclosure 1 into an electrical installation area and a battery pack installation area. The electrical installation area is located at the end of the battery pack installation area facing the enclosure cover 11, which facilitates the installation of the BMS module in the electrical installation area. The BMS module is a battery management system of the prior art, which is responsible for managing, monitoring and protecting the battery and is used to connect the battery and the electrical equipment. Each battery pack is located in the battery pack installation area.

[0022] Reference Figure 1 and Figure 2 The unit partition device includes a fixed partition 2, a linear drive unit 3, a movable partition 4, and a jumper mechanism 5. There are multiple fixed partitions 2, which are arranged parallel to the electrical partition 13. The multiple fixed partitions 2 are arranged along the length of the housing 1. The bottom of the fixed partition 2 is fixed to the upper surface of the bottom plate 12. There is a distance between the top of the fixed partition 2 and the inner top of the housing 1. The battery pack installation area is divided into sub-areas, and there are multiple battery packs in each sub-area, thereby dividing the entire battery pack into multiple areas.

[0023] The environmental monitoring module includes multiple environmental monitoring sub-units distributed in various sub-regions (not shown in the figure). In this embodiment, the environmental monitoring sub-unit includes a temperature sensor. There are multiple temperature sensors, which are respectively fixed on the plate surface in the thickness direction of the separator 2 and on the upper part of the battery pack in each sub-region. They are used to detect the temperature in each sub-region. The separator 2 is a composite plate with at least three layers, and the middle layer is at least a heat insulation plate. The two sides of the heat insulation plate are high-temperature resistant and flame-retardant layers, such as plates made of ceramic fiber material.

[0024] With the above setup, the environmental monitoring subunit can be connected to the BMS module via wires to feed back the data detected by the environmental monitoring subunit to the BMS module. The BMS module will then isolate the data based on the feedback control unit isolation device of the environmental monitoring subunit. Alternatively, the environmental monitoring subunit can be connected to a separate controller for receiving feedback, such as a PLC controller or MCU controller, and the controller can be installed in the electrical installation area.

[0025] Linear drive unit 3 is installed on the inner top of housing 1, with the driving direction parallel to the length direction of housing 1. Linear drive unit 3 has two synchronous / asynchronous moving drive parts. Each drive part of linear drive unit 3 is equipped with a vertically oriented movable partition 4. The movable partition 4 is located above the fixed partition 2 and serves to fall above the fixed partition 2 to cooperate with the fixed partition 2 in separating the battery pack mounting area. In this embodiment, linear drive unit 3 includes two linear motors, and a movable partition 4 is mounted on the slide of one linear motor.

[0026] The jumper mechanism 5 is connected to the busbar and the top of the enclosure 1, and is used to cut off the busbar between the two movable partitions 4 when the two movable partitions 4 fall on the fixed partition 2, and connect the busbars on opposite sides of the two movable partitions 4, thereby allowing the current to skip over the faulty area.

[0027] Understandably, in the initial state, both movable partitions 4 are located at the end of the housing 1 near the cover 11. When the environmental detection module detects that the temperature in a certain sub-zone exceeds the threshold and an abnormality occurs, the linear drive unit 3 can be controlled to drive the movable partition 4 to move to the corresponding area, cooperating with the fixed partition 2 to block the overheated area.

[0028] With the above settings, the environmental detection module detects the environmental status within the battery pack installation area. If an overheating occurs in a sub-area where a battery pack is located, the linear drive unit 3 drives two movable partitions 4 to move above the battery pack and land on the top of the corresponding fixed partition 2, separating the battery pack in the overheated area from the battery packs in other normal areas. This encloses the battery pack in the overheated area within the space formed by the two movable partitions 4 and the corresponding fixed partition 2. At the same time, the jumper mechanism 5 cuts off the busbar between the two movable partitions 4 and allows the current to bypass the fault area and continue to conduct the busbar, thereby reducing the adverse effects of overheating faults in some battery packs on the entire energy storage box.

[0029] Reference Figure 2 and Figure 3 The fixed separator 2 extends beyond the top surface of the battery pack and has a support plate 21 along its width. The busbar is fixed to the support plate 21 by C-shaped buckles and is divided into multiple unit lines A along the length of the housing 1. The top surface of the fixed separator 2 has an opening mounting groove 22 along its longitudinal direction. A horizontal insulating base 23 is provided above the opening of the mounting groove 22. A return spring 24 is provided at the bottom of the insulating base 23. The other end of the return spring 24 is fixed to the bottom wall of the mounting groove 22. A conductive terminal B25 is fixed to the insulating base 23. Vertical conductive contact plates 26 are fixed to both ends of the terminal B25. The middle of the contact plate 26 protrudes outward, so that the opposing ends of adjacent unit lines A abut against the protrusions of the contact plates 26 at both ends of the terminal B25, so as to achieve stable contact and thus conduct the entire busbar.

[0030] The movable partition 4 includes partition A41 and partition B42, which are distributed vertically and slidably connected. The top of partition A41 is connected to the drive part of linear drive unit 3. A lifting unit is provided in partition A41 to drive partition B42 to move downward and press down terminal B25.

[0031] The lifting unit includes a syringe unit 43, a medium tank, and a solenoid valve. The syringe unit 43 includes a hollow, bottom-opening sleeve 431 and a piston rod 432 that slides within the sleeve 431. A through groove for embedding the sleeve 431 is longitudinally provided at the bottom of the partition A41. The lower end of the piston rod 432 is fixed to the top of the partition B42. The medium tank (not shown in the figure) is installed in the electrical installation area and is used to fill the medium. In this embodiment, the medium can be gas. The medium tank is connected to the cavity of the sleeve 431 by a pipe (hose), and a solenoid valve (not shown in the figure) is installed on the pipe. The solenoid valve is a normally closed solenoid valve and is fixed to the partition A41.

[0032] With the above configuration, the gas in the medium tank pushes the piston rod 432 to move, causing the piston rod 432 to move the partition B42 downward, so that the lower end of the partition B42 presses down on the terminal B25, causing the contact plates 26 at both ends of the terminal B25 to disconnect from the adjacent unit line A. Thus, the movable partition 4 and the fixed partition 2 come into contact and cooperate, which not only blocks the upper space of the battery pack, but also cuts off the bus, so as to disconnect the power to the battery pack with overheating faults that are prone to fire in time, and reduce the impact on adjacent battery packs.

[0033] In another embodiment of this application, a pump (not shown in the figure) is installed on the pipeline of the medium tank. The pump can be installed in the electrical installation area of ​​the housing 1, and a heat dissipation structure, such as liquid cooling fins, is provided in the housing 1 for heat dissipation of the pump and the medium tank.

[0034] Reference Figure 2 The jumper mechanism 5 includes a jumper conductive plate 51 and conductive contacts 52. The jumper conductive plate 51 is fixed to the inner top of the housing 1 and is arranged along the length direction. It should be noted that the jumper conductive plate 51 should be insulated from the inner top of the housing 1. Two movable partitions 4 are arranged one in front of the other. The contacts 52 are set on the side walls of the two partitions A41 that are opposite to each other, and are used to abut against the jumper conductive plate 51. Two partitions B42 are arranged one in front of the other and opposite to each other, and each side is provided with a conductive connector rod 53. One end of the connector rod 53 extends downward and is fixed with a conductive arc plate 54. The arc opening of the arc plate 54 faces downward and is located directly above the busbar. The end of the unit line A has an exposed metal core, so that the arc plate 54 can contact the end metal core of the unit line A to conduct electricity.

[0035] A wire is provided between the contact 52 and the connector rod 53 on the same movable partition 4 for connection, and the wire is a spring wire or the wire length is greater than the maximum distance between the two, so as to satisfy the up and down movement of the partition B42.

[0036] In order to ensure that the arc plate 54 can be pressed against the metal core of unit line A when the connector rod 53 moves the arc plate 54 downward, an extension rod extends horizontally from the side wall of partition B42. The connector rod 53 slides vertically through the extension rod. A second return spring 55 for driving the connector rod 53 to rise and fall is fixed on the bottom wall of the extension rod. The second return spring 55 is sleeved on the outside of the connector rod 53, and the lower end of the second return spring 55 is fixed to the stepped surface extending from the side wall of the connector rod 53. Thus, under the action of the second return spring 55, the arc plate 54 can be firmly pressed against the metal core of unit line A.

[0037] With the above settings, the operator configures the controller or BMS module as follows: when the temperature value detected by the environmental detection subunit is higher than the preset threshold, the linear drive unit 3 is controlled to move the two movable partitions 4 to above the fixed partitions 2 at the beginning and end of the overheated area, according to the overheated area where the environmental detection subunit is located. The solenoid valve is then opened, pushing the medium in the medium tank into the cavity of the syringe unit 43. This causes the piston rod 432 to move the partition B downwards and press down on the terminal B, separating the terminal B from the wiring ends of the adjacent unit lines A on both sides. This, in turn, separates the two movable partitions 4... The busbar between the two sides is cut off, de-energizing the battery pack in the overheated area. At the same time, as the separator B moves downward, it also moves the connector rod 53 downward, causing the arc plate 54 at the end of the connector rod 53 to contact the metal core of the unit line A. This allows the current to flow through the connector rod 53, the wire, and the contact 52, and connect with the jumper conductive plate 51 on the top of the box 1. The current then flows through the connector rod 53 of another separator B to the terminal of another unit line A, thus bypassing the overheated power-off area. This ensures that the busbar in the normal area, except for the overheated area, can still conduct normally without affecting the normal operation of other battery packs.

[0038] 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. A modular underground energy storage box, comprising a box body (1) and busbars for connecting various batteries, wherein one end of the inner cavity of the box body (1) is open and covered and fixed with a suitable box cover (11), characterized in that: The enclosure (1) is provided with an electrical partition (13), a unit partition device and an environmental monitoring module. The electrical partition (13) is provided along the width of the enclosure (1) and separates the inner cavity of the enclosure (1) into an electrical installation area and a battery pack installation area. The electrical installation area is located at the end of the battery pack installation area facing the enclosure cover (11). The unit partition device includes a fixed partition (2), a linear drive unit (3), a movable partition (4), and a jumper mechanism (5). There are multiple fixed partitions (2) arranged along the parallel electrical partition (13). The multiple fixed partitions (2) are arranged along the length of the housing (1) and the battery pack installation area is divided into sub-areas. The environmental detection module includes multiple environmental detection sub-units distributed in each sub-area. The linear drive unit 1 (3) is installed on the inner top of the housing (1) and the driving direction is parallel to the length direction of the housing (1). The linear drive unit 1 (3) has two synchronous / asynchronous moving drive parts. Each drive part of the linear drive unit 1 (3) is equipped with a movable partition (4). The movable partition (4) is located above the fixed partition (2) and is used to fall above the fixed partition (2) to cooperate with the fixed partition (2) to separate the battery pack installation area. The jumper mechanism (5) is connected to the busbar and the top of the housing (1), and is used to cut the busbar between the two movable partitions (4) when the two movable partitions (4) fall on the fixed partition (2), and to connect the busbars on opposite sides of the two movable partitions (4).

2. The combined underground energy storage box according to claim 1, characterized in that: The upper part of the partition plate (2) is provided with a support plate (21) along the width direction, and the busbar falls on the support plate (21) and is divided into multiple unit lines A along the length direction of the box body (1); The fixed partition plate (2) has an open mounting groove (22), and an insulating base (23) is provided above the groove opening of the mounting groove (22). A reset spring (24) is provided at the bottom of the insulating base. A conductive terminal B (25) is fixed on the insulating base (23). Contact plates (26) are fixed at both ends of the terminal B (25). The middle part of the contact plate (26) protrudes outward, and the opposite ends of adjacent unit lines A abut against the terminal plates at both ends of the terminal B (25). The movable partition (4) includes partition A (41) and partition B (42) which are distributed vertically and slidably connected. Partition A (41) is provided with a lifting unit for driving partition B (42) to move downward and press down the terminal B (25).

3. The combined underground energy storage box according to claim 2, characterized in that: The lifting unit includes a syringe unit (43), a medium tank and a solenoid valve. The piston rod (432) of the syringe unit (43) is vertical and the outer rod end is fixed to a partition B (42). The medium tank is installed in the electrical installation area and is used to fill the medium. The medium tank is provided with a pipe connected to the cavity of the syringe unit (43) and a solenoid valve is installed on the pipe. The solenoid valve is a normally closed solenoid valve and is fixed to the partition A (41).

4. The combined underground energy storage box according to claim 3, characterized in that: A pump is installed on the pipeline of the medium tank.

5. The combined underground energy storage box according to claim 2, characterized in that: The jumper mechanism (5) includes a jumper conductive plate (51) and a contact (52). The jumper conductive plate (51) is fixed to the inner top of the box (1) and is arranged along the length direction. The contact (52) is arranged on the partition A (41) and is used to abut against the jumper conductive plate (51). The two partitions B (42) are arranged in front and behind each other and are respectively provided with a connector rod (53). One end of the connector rod (53) is downward and is fixed with a conductive arc plate (54). The arc opening of the arc plate (54) is downward and located directly above the busbar. The end of the unit line A has a section of exposed metal core. The contact (52) and the connector rod (53) are connected by a wire.

6. The combined underground energy storage box according to claim 5, characterized in that: The connector rod (53) is vertically slidably connected to the partition plate B (42), and the partition plate B (42) is provided with a return spring two (55) for driving the connector rod (53) to rise and fall.

7. The combined underground energy storage box according to claim 5, characterized in that: The wire between the contact (52) and the connector rod (53) on the same movable partition (4) is a spring wire or the wire length is greater than the maximum distance between them.

8. The combined underground energy storage box according to claim 5, characterized in that: The environmental detection subunit includes a temperature sensor, which is multiple and is fixed on the plate surface in the thickness direction of the separator (2) and the upper part of the battery in each sub-area. The separator (2) is a composite plate with at least three layers, and the middle layer is at least a heat insulation plate. The heat insulation plate has high temperature resistant and flame retardant layers on both sides.

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