Energy storage box

Abstract

The utility model provides a kind of energy storage electric box, the energy storage electric box of utility model embodiment includes box and electric core subassembly. Heat exchange medium is circulated in box, and box has with its inside communication inlet and outlet, wherein inlet is used to pass into heat exchange medium into box, outlet is used to discharge heat exchange medium in box;While electric core subassembly is located in box and is immersed in heat exchange medium, and electric core subassembly includes electric core group, and electric core group includes multiple electric core, which is arranged along the length direction of electric core subassembly. Gap is present between adjacent electric core, and flow guide component is arranged in gap, and flow guide component includes flow guide pipe, and flow guide pipe has flow guide channel, to supply heat exchange medium circulation. Therefore, the energy storage electric box of utility model embodiment can greatly improve the heat dissipation efficiency of the surface of adjacent electric core.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to an energy storage box. Background Technology

[0002] Battery energy storage technology possesses the function of regulating energy storage and release, enabling efficient spatial and temporal energy migration and improving power system stability. It is gradually becoming a necessity and standard feature. Currently, large-scale containerized lithium battery energy storage systems are characterized by long lifespan, high energy density, high efficiency, and strong environmental adaptability, and their installed capacity is rapidly expanding. However, because the performance and safety of lithium batteries are highly correlated with their operating temperature, excessively high or low temperatures, as well as uneven temperature distribution, pose significant challenges to battery safety and performance. In severe cases, thermal runaway or thermal propagation accidents can occur, not only damaging the product but also potentially leading to safety incidents. Therefore, the design of an efficient thermal management system is crucial for the safe and reliable operation of lithium battery energy storage systems.

[0003] Currently, thermal management of large energy storage battery packs mostly adopts two methods: air cooling and liquid cooling. However, with the charging and discharging rates of energy storage products gradually upgrading from 0.25C to 0.5C or even 1C, air cooling solutions can no longer meet the heat dissipation requirements of the battery cells.

[0004] The commonly used bottom liquid cooling plate heat dissipation solution has significant limitations. With heat dissipation on one side, the temperature gradient of the battery cell is large, which can lead to a large expansion after long-term use, posing a significant safety hazard to the battery cell.

[0005] In addition, due to the design of the liquid cooling plate, there is usually a certain temperature difference between different cells in the battery pack.

[0006] While the currently developing immersion cooling solution has made great progress in terms of heat dissipation capacity and temperature difference control, it still suffers from low heat dissipation efficiency at the contact surfaces of adjacent cells.

[0007] Therefore, the contact surface between adjacent cells in the energy storage box in the relevant technology has the problem of low heat dissipation efficiency. Utility Model Content

[0008] This utility model embodiment provides an energy storage box to solve the problem of low heat dissipation efficiency at the contact surface of adjacent battery cells in related technologies, thereby improving the heat dissipation efficiency of the contact surface of adjacent battery cells in the energy storage box.

[0009] The energy storage box of this utility model embodiment includes a box body and a battery cell assembly.

[0010] The heat exchange medium flows inside the box. The box has an inlet and an outlet that communicate with its interior. The inlet is used to introduce the heat exchange medium into the box, and the outlet is used to discharge the heat exchange medium from the box.

[0011] Preferably, the inlet is located above the outlet. It is understood that the location of the inlet above the outlet is not limited to directly above it. In other words, in the height direction of the tank, the distance from the inlet to the bottom of the tank is greater than the distance from the outlet to the bottom of the tank.

[0012] Meanwhile, the battery cell assembly is located inside the box and immersed in the heat exchange medium. The battery cell assembly includes a battery cell group, which includes multiple battery cells arranged along the length of the battery cell assembly.

[0013] It is understandable that the heat exchange medium entering the box through the liquid inlet absorbs the heat from the battery cell and is discharged from the box through the liquid outlet. The discharged heat exchange medium can exchange heat with the cold source to transfer the heat absorbed from the battery cell to the cold source. Then, the heat exchange medium entering the box through the liquid inlet can absorb the heat from the battery cell again. This process is repeated, thereby achieving the effect of reducing the temperature of the battery cell.

[0014] There is a gap between adjacent cells, and a flow guiding component is provided in the gap. The flow guiding component includes a flow guiding tube with a flow guiding channel for the flow of heat exchange medium.

[0015] By setting a flow pipe between adjacent cells to allow the heat exchange medium to flow, the heat exchange medium inside the casing can also flow between adjacent cells. This allows the heat from the contact surfaces of adjacent cells to be transferred to the heat exchange medium inside the flow pipe in a timely manner, thereby effectively dissipating heat from the contact surfaces of adjacent cells.

[0016] Therefore, the energy storage box of this utility model embodiment can greatly improve the heat dissipation efficiency of the contact surface between adjacent battery cells.

[0017] In some embodiments, the guide tube includes a tube wall having a cavity, and at least one rib is provided in the cavity, the at least one rib dividing the cavity into a plurality of guide channels.

[0018] In some embodiments, there are multiple guide tubes, which are arranged in the width direction of the cell assembly and adjacent guide tubes abut against each other, or the multiple guide tubes are spaced apart in the width direction of the cell assembly.

[0019] In some embodiments, the cell assembly has a first end face and a second end face disposed opposite to each other along the length of the cell assembly.

[0020] The battery cell assembly includes a first baffle and a second baffle, the first baffle being disposed on the first end face and the second baffle being disposed on the second end face.

[0021] In some embodiments, a first insulating plate is disposed between the first baffle and the battery cell assembly, and a second insulating plate is disposed between the second baffle and the battery cell assembly.

[0022] In some embodiments, the cell assembly has a third end face and a fourth end face disposed opposite to each other in the width direction of the cell assembly;

[0023] The battery cell assembly further includes a first pull bar and a second pull bar. The first pull bar is disposed on the third end face, one end of the first pull bar is connected to the first baffle, and the other end of the first pull bar is connected to the second baffle. The second pull bar is disposed on the fourth end face, one end of the second pull bar is connected to the first baffle, and the other end of the second pull bar is connected to the second baffle.

[0024] In some embodiments, the flow guide has opposing first and second flow guide end faces in the height direction of the cell assembly.

[0025] The cell assembly has a fifth end face and a sixth end face opposite each other in the height direction of the cell assembly;

[0026] The first flow guiding end face is provided corresponding to the fifth end face, the first flow guiding end face is spaced apart from the fifth end face in the height direction of the cell assembly, and the first flow guiding end face is located inside the fifth end face;

[0027] The second flow guiding end face is provided corresponding to the sixth end face. The second flow guiding end face is spaced apart from the sixth end face in the height direction of the cell assembly, and the second flow guiding end face is located inside the sixth end face.

[0028] In some embodiments, in the height direction of the cell assembly, the distance between the first guide end face and the fifth end face is less than or equal to 5% and greater than or equal to 2.5% of the cell height; the distance between the second guide end face and the sixth end face is less than or equal to 5% and greater than or equal to 2.5% of the cell height.

[0029] In some embodiments, there are multiple battery cell assemblies stacked in their height direction, with a partition between adjacent battery cell assemblies. The partition has a flow-guiding groove corresponding to the gap, and the flow-guiding groove extends through the partition along the height direction of the battery cell assembly.

[0030] In some embodiments, the dimension of the flow channel in the length direction of the cell assembly is greater than the dimension of the gap in the length direction of the cell assembly. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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.

[0032] Figure 1 This is a schematic diagram of the structure of the energy storage box according to an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of the internal structure of the energy storage box according to an embodiment of the present invention;

[0034] Figure 3 This is an exploded view of the energy storage box according to an embodiment of the present utility model;

[0035] Figure 4 This is an exploded side view of the energy storage box according to an embodiment of the present utility model;

[0036] Figure 5 This is a schematic diagram of the flow guide pipe of the energy storage box according to an embodiment of the present invention.

[0037] In the picture:

[0038] 1. Box body; 101. Top cover; 102. Bottom plate; 103. Liquid inlet; 104. Liquid outlet;

[0039] 2. Battery cell assembly;

[0040] 201, Cell assembly; 2011, First end face; 2012, Second end face; 2013, Third end face; 2014, Fourth end face; 2015, Fifth end face; 2016, Sixth end face; 2017, Cell;

[0041] 202. Gap;

[0042] 3. Flow guiding components;

[0043] 301, Guide tube; 3011, Tube wall; 3012, Rib; 3013, Guide channel; 3014, First guide end face; 3015, Second guide end face;

[0044] 4. First baffle;

[0045] 5. Second baffle;

[0046] 6. First pull strip;

[0047] 7. Second pull strip;

[0048] 8. Partition plate; 801. Flow guide channel.

[0049] 9. First insulating board; 10. Second insulating board. Detailed Implementation

[0050] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0051] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal encapsulation of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] In order to solve the problem of low heat dissipation efficiency at the contact surface of adjacent cells 2017 in the energy storage box in related technologies, and to improve the heat dissipation efficiency of the contact surface of adjacent cells 2017 in the energy storage box, this utility model provides an energy storage box.

[0054] The energy storage box of this utility model embodiment includes a box body 1 and a battery cell assembly 2.

[0055] The heat exchange medium flows inside the housing 1. The housing 1 has an inlet 103 and an outlet 104 that communicate with its interior. The inlet 103 is used to introduce the heat exchange medium into the housing 1, and the outlet 104 is used to discharge the heat exchange medium from the housing 1.

[0056] Preferably, the housing 1 includes an upper cover 101 and a bottom plate 102, with the upper cover 101 covering the bottom plate 102.

[0057] Preferably, the inlet 103 is located above the outlet 104. It is understood that the location of the inlet 103 above the outlet 104 is not limited to being directly above it. In other words, in the height direction of the box 1, the distance from the inlet 103 to the bottom of the box 1 is greater than the distance from the outlet 104 to the bottom of the box 1.

[0058] Meanwhile, the battery cell assembly 2 is located inside the housing 1 and immersed in the heat exchange medium. The battery cell assembly 2 includes a battery cell group 201, which includes a plurality of battery cells 2017 arranged along the length of the battery cell assembly 2.

[0059] It is understandable that after the heat exchange medium entering the housing 1 through the liquid inlet 103 absorbs the heat of the battery cell 2017, it is discharged from the housing 1 through the liquid outlet 104. The heat exchange medium discharged from the housing 1 can exchange heat with the cold source to transfer the heat absorbed by the battery cell 2017 to the cold source. Then, it can absorb the heat of the battery cell 2017 again through the heat exchange medium entering the housing 1 through the liquid inlet 103. This process is repeated, thereby achieving the effect of reducing the temperature of the battery cell 2017.

[0060] There is a gap 202 between adjacent cells 2017. A flow guiding component 3 is provided in the gap 202. The flow guiding component 3 includes a flow guiding pipe 301. The flow guiding pipe 301 has a flow guiding channel 3013 for the flow of heat exchange medium.

[0061] By setting a flow pipe 301 between adjacent cells 2017 to allow the heat exchange medium to flow, the heat exchange medium in the housing 1 can also flow between adjacent cells 2017, thereby enabling the heat of the contact surface of adjacent cells 2017 to be transferred to the heat exchange medium in the flow pipe 301 in a timely manner, and thus effectively dissipating heat from the contact surface of adjacent cells 2017.

[0062] Therefore, the energy storage box of this utility model embodiment can greatly improve the heat dissipation efficiency of the contact surface of adjacent battery cells 2017.

[0063] In some embodiments, the guide tube 301 includes a tube wall 3011, the tube wall 3011 has a cavity, and at least one rib 3012 is provided in the cavity, the at least one rib 3012 dividing the cavity into a plurality of guide channels 3013.

[0064] It is understandable that multiple flow channels 3013 can uniformly distribute the heat exchange medium entering the flow inlet pipe 301, thereby absorbing the heat of the contact surfaces of adjacent cells 2017 and improving the temperature uniformity of the cells 2017.

[0065] Furthermore, there are multiple guide tubes 301, which are arranged in the width direction of the cell assembly 2 and adjacent guide tubes 301 abut against each other, or the multiple guide tubes 301 are spaced apart in the width direction of the cell assembly 2.

[0066] It is understandable that the flow guide 301 can be configured in two ways:

[0067] Firstly, adjacent guide pipes 301 are in contact with each other, meaning that the heat exchange medium cannot flow between adjacent guide pipes 301;

[0068] Secondly, the adjacent guide pipes 301 are spaced apart, meaning that the heat exchange medium can flow between adjacent guide pipes 301.

[0069] Therefore, the specific configuration of the heat pipe can be determined according to the actual heat dissipation requirements.

[0070] In some embodiments, the cell assembly 201 has a first end face 2011 and a second end face 2012 disposed opposite to each other in the length direction of the cell assembly 2.

[0071] The battery cell assembly 2 includes a first baffle 4 and a second baffle 5. The first baffle 4 is disposed on the first end face 2011, and the second baffle 5 is disposed on the second end face 2012.

[0072] By setting a first baffle 4 and a second baffle 5 on the first end face 2011 and the second end face 2012 of the cell assembly 201 respectively, the problem of cell 2017 of the cell assembly 201 can be avoided; on the other hand, the structural strength of the cell assembly 2 can be improved.

[0073] In some embodiments, a first insulating plate 9 is provided between the first baffle 4 and the battery cell assembly 201, and a second insulating plate 10 is provided between the second baffle 5 and the battery cell assembly 201.

[0074] By setting a first insulating plate 9 between the first baffle 4 and the cell assembly 201, and setting a second insulating plate 10 between the second baffle 5 and the cell assembly 201, the insulation performance between the first baffle 4 and the cell assembly 201 can be greatly improved, as can the insulation performance between the second baffle 5 and the cell assembly 201, thus preventing short circuits caused by current between the cell assembly 201 and the first baffle 4, and between the cell assembly 201 and the second baffle 5.

[0075] In some embodiments, the cell assembly 201 has a third end face 2013 and a fourth end face 2014 disposed opposite to each other in the width direction of the cell assembly 2; the cell assembly 2 also includes a first pull bar 6 and a second pull bar 7, the first pull bar 6 is disposed on the third end face 2013, one end of the first pull bar 6 is connected to the first baffle 4, and the other end of the first pull bar 6 is connected to the second baffle 5; the second pull bar 7 is disposed on the fourth end face 2014, one end of the second pull bar 7 is connected to the first baffle 4, and the other end of the second pull bar 7 is connected to the second baffle 5.

[0076] By setting the first pull bar 6 and the second pull bar 7, the battery cell 2017 of the battery cell assembly 201 can be further fixed, thereby further improving the structural strength of the battery cell assembly 2.

[0077] In some embodiments, the flow guide 301 has a first flow guide end face and a second flow guide end face that are opposite each other in the height direction of the cell assembly 2.

[0078] The cell assembly 201 has a fifth end face 2015 and a sixth end face 2016 that are opposite each other in the height direction of the cell assembly 2;

[0079] The first current guiding end face is provided corresponding to the fifth end face 2015. The first current guiding end face is spaced apart from the fifth end face 2015 in the height direction of the cell assembly 2, and the first current guiding end face is located inside the fifth end face 2015.

[0080] The second flow guiding end face is provided corresponding to the sixth end face 2016. The second flow guiding end face is spaced apart from the sixth end face 2016 in the height direction of the cell assembly 2, and the second flow guiding end face is located inside the sixth end face 2016.

[0081] By positioning the first guide end face 3014 at intervals inside the fifth end face 2015 and positioning the second guide end face 3015 at intervals inside the sixth end face 2016, the heat exchange medium can flow into the guide pipe 301 and flow out of the guide pipe 301, thereby facilitating heat exchange between the heat exchange medium and the surface in contact with the adjacent battery cell 2017, thus improving the heat exchange efficiency.

[0082] Furthermore, in the height direction of the cell assembly 2, the distance between the first guide end face 3014 and the fifth end face 2015 is less than or equal to 5% and greater than or equal to 2.5% of the height of the cell 2017; the distance between the second guide end face 3015 and the sixth end face 2016 is less than or equal to 5% and greater than or equal to 2.5% of the height of the cell 2017.

[0083] It is understandable that if the distance between the first guide end face and the fifth end face 2015 is too large in the height direction of the cell assembly 2, it means that the length of the guide tube 301 is too short, resulting in an excessively large gap 202 area between adjacent cells 2017, which will reduce the overall structural strength of the cell assembly 2. If the distance between the first guide end face and the fifth end face 2015 is too small, it will be difficult for the heat exchange medium to flow into and out of the guide tube 301. Therefore, by setting the distance between the first guide end face and the fifth end face 2015 to the above range, it is possible to ensure the structural strength of the cell assembly 2 while also facilitating the flow of the heat exchange medium into and out of the guide tube 301.

[0084] Similarly, in the height direction of the cell assembly 2, if the distance between the second guide end face and the sixth end face 2016 is too large, it means that the length of the guide tube 301 is too short, resulting in an excessively large gap 202 area between adjacent cells 2017, which will reduce the overall structural strength of the cell assembly 2. If the distance between the second guide end face and the sixth end face 2016 is too small, it will be difficult for the heat exchange medium to flow into and out of the guide tube 301. Therefore, by setting the distance between the second guide end face and the sixth end face 2016 to the above range, it is possible to ensure the structural strength of the cell assembly 2 while also facilitating the flow of the heat exchange medium into and out of the guide tube 301.

[0085] In some embodiments, there are multiple battery cell assemblies 2, which are stacked in their height direction. A partition 8 is provided between adjacent battery cell assemblies 2. The partition 8 is provided with a guide groove 801 corresponding to the gap 202. The guide groove 801 passes through the partition 8 along the height direction of the battery cell assembly 2.

[0086] By setting a partition 8 between adjacent cell assemblies 2, the adjacent cell assemblies 2 can be isolated on the one hand, and the cell assemblies 2 located above them can be supported on the other hand.

[0087] Meanwhile, by setting a flow channel 801 on the partition plate 8, the flow channels 301 of adjacent battery cell assemblies 2 can be connected, which facilitates the flow of heat exchange medium between the flow channels 301 of adjacent battery cell assemblies 2, shortens the flow path of heat exchange medium between the flow channels 301 of adjacent battery cell assemblies 2, and facilitates heat exchange between the heat exchange medium and the surface in contact with adjacent battery cells 2017, thereby greatly improving the heat exchange efficiency and facilitating the temperature control of battery cell assemblies 2.

[0088] In some embodiments, the dimension of the guide groove 801 in the length direction of the cell assembly 2 is greater than the dimension of the gap 202 in the length direction of the cell assembly 2.

[0089] It is understandable that setting the dimension of the flow channel 801 in the length direction of the cell assembly 2 to be greater than the dimension of the gap 202 in the length direction of the cell assembly 2 can facilitate the flow of heat exchange medium between adjacent cell assemblies 2, for example, facilitate the flow from the flow pipe 301 located above the partition 8 to the flow pipe 301 located below the partition 8, thereby improving the heat exchange efficiency between the heat exchange medium and the cell assembly 2.

[0090] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. An energy storage electrical box, characterized by, include: The box (1) contains a heat exchange medium, and the box (1) has an inlet (103) and an outlet (104) communicating with its interior. The battery cell assembly (2) is disposed in the housing (1) and immersed in the heat exchange medium. The battery cell assembly (2) includes a battery cell group (201), which includes a plurality of battery cells (2017) arranged along the length direction of the battery cell assembly (2). There is a gap (202) between adjacent cells (2017), and a flow guiding component (3) is provided in the gap (202). The flow guiding component (3) includes a flow guiding pipe (301) and the flow guiding pipe (301) has a flow guiding channel (3013) for the heat exchange medium to flow.

2. The energy storage electric box of claim 1, wherein, The guide tube (301) includes a tube wall (3011) having a cavity, and at least one rib (3012) is provided in the cavity, the at least one rib (3012) dividing the cavity into a plurality of guide channels (3013).

3. The energy storage electric box of claim 1, wherein, There are multiple flow guides (301), which are arranged in the width direction of the battery cell assembly (2) and adjacent flow guides (301) abut against each other, or the multiple flow guides (301) are spaced apart in the width direction of the battery cell assembly (2).

4. The energy storage electric box of claim 1, wherein, The battery cell assembly (201) has a first end face (2011) and a second end face (2012) disposed opposite to each other in the length direction of the battery cell assembly (2). The battery cell assembly (2) includes a first baffle (4) and a second baffle (5), the first baffle (4) being disposed on the first end face (2011) and the second baffle (5) being disposed on the second end face (2012).

5. The energy storage electric box of claim 4, wherein, A first insulating plate (9) is provided between the first baffle (4) and the battery cell assembly (201), and a second insulating plate (10) is provided between the second baffle (5) and the battery cell assembly (201).

6. The energy storage electric box of claim 4, wherein, The battery cell assembly (201) has a third end face (2013) and a fourth end face (2014) disposed opposite to each other in the width direction of the battery cell assembly (2). The battery cell assembly (2) further includes a first pull bar (6) and a second pull bar (7). The first pull bar (6) is located on the third end face (2013). One end of the first pull bar (6) is connected to the first baffle (4), and the other end of the first pull bar (6) is connected to the second baffle (5). The second pull bar (7) is located on the fourth end face (2014). One end of the second pull bar (7) is connected to the first baffle (4), and the other end of the second pull bar (7) is connected to the second baffle (5).

7. The energy storage electric box of claim 1, wherein, The flow guide (301) has a first flow guide end face (3014) and a second flow guide end face (3015) opposite each other in the height direction of the cell assembly (2). The cell assembly (201) has a fifth end face (2015) and a sixth end face (2016) opposite each other in the height direction of the cell assembly (2). The first flow guiding end face (3014) is provided corresponding to the fifth end face (2015). The first flow guiding end face (3014) is spaced apart from the fifth end face (2015) in the height direction of the cell assembly (2), and the first flow guiding end face (3014) is located inside the fifth end face (2015). The second flow guiding end face (3015) is provided corresponding to the sixth end face (2016). The second flow guiding end face (3015) is spaced apart from the sixth end face (2016) in the height direction of the cell assembly (2), and the second flow guiding end face (3015) is located inside the sixth end face (2016).

8. The energy storage electric box of claim 7, wherein, In the height direction of the cell assembly (2), the distance between the first guide end face (3014) and the fifth end face (2015) is less than or equal to 5% and greater than or equal to 2.5% of the height of the cell (2017); the distance between the second guide end face (3015) and the sixth end face (2016) is less than or equal to 5% and greater than or equal to 2.5% of the height of the cell (2017). 。 9. The energy storage electric box of claim 1, wherein, There are multiple battery cell assemblies (2), and the multiple battery cell assemblies (2) are stacked in their height direction. A partition (8) is provided between adjacent battery cell assemblies (2). The partition (8) is provided with a guide groove (801) corresponding to the gap (202). The guide groove (801) passes through the partition (8) along the height direction of the battery cell assembly (2).

10. The energy storage electric box of claim 9, wherein, The dimension of the guide groove (801) in the length direction of the cell assembly (2) is greater than the dimension of the gap (202) in the length direction of the cell assembly (2).

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