Energy storage device heat dissipation baffle and energy storage battery box equipment

Abstract

The application discloses a heat dissipation partition plate of an energy storage device and an energy storage battery box equipment. The heat dissipation partition plate of the energy storage device comprises two oppositely arranged side plates, groove limiting structures arranged at connecting positions of the two side plates and a plurality of supporting inclined ribs located between the two side plates. Each supporting inclined rib is provided with a limiting protrusion. The limiting protrusion is a solid structure. When the two side plates are extruded, the limiting protrusion can support the two adjacent side plates from contacting each other to reserve a cooling channel between the two side plates. According to the embodiment of the application, the limiting protrusion is arranged on the inclined rib. Even if the inclined rib is flattened, the limiting protrusion can ensure that the flattened inclined rib does not directly contact the two side plates, so that the cooling channel with a certain area is ensured, and the basic heat dissipation performance required for normal work of the battery cell is ensured.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology for energy storage devices, specifically to a heat dissipation partition and energy storage battery box equipment for an energy storage device. Background Technology

[0002] Existing air-cooled or water-cooled partitions used in energy storage battery boxes generally have no limit structure, or the limit structure is too simple and not robust enough.

[0003] In the appendix Figure 1 The middle section is a traditional air-cooled partition structure, which is a closed, thin-walled, waist-shaped hollow structure. The outer two sides (5) have planes of a certain width, with rounded transitions at both ends. The middle section has a number of parallel, equally spaced diagonal supporting ribs (4). The outer two sides are in contact with the battery cell, transferring heat to the channels in the middle section. Simultaneously, they bear and restrain the expansion force of the battery cell when it expands. The channels formed by the ribs in the middle section constitute the air-cooling channels for the battery cell's heat.

[0004] When the battery cell undergoes thermal expansion, the diagonal ribs and the outer plane together exert a restraining force on the cell. The two outer plates of the air-cooling partition placed between the cells are compressed inward by the cells, limiting the expansion to some extent. When the expansion force is too large, the roots of the parallel diagonal ribs undergo consistent yielding deformation, becoming more inclined until they are gradually flattened and fit against the inner planes of the two outer plates. At this point, the space of the channel is close to zero, which adversely affects the normal heat dissipation of the battery cell. When compressed to the limit, the diagonal ribs in the cavity will completely fit against the outer plates on both sides, causing the original hollow cooling channel to almost disappear, thus affecting the ventilation and heat dissipation performance of the battery cell under normal operation, which may lead to risks such as thermal runaway.

[0005] In view of this, the present invention provides a heat dissipation partition for an energy storage device and an energy storage battery box to solve the defect that the cooling channel is almost gone and the ventilation and heat dissipation performance is lost due to expansion and deformation. Summary of the Invention

[0006] This application provides a heat dissipation partition for an energy storage device and an energy storage battery box, which can solve the technical problem that the cooling channels are almost gone due to expansion and deformation, resulting in the loss of ventilation and heat dissipation performance and the risk of thermal runaway.

[0007] This application provides a heat dissipation partition for an energy storage device, including two oppositely arranged side plates, a groove limiting structure located at the connection position at both ends of the two side plates, and a plurality of supporting inclined ribs located between the two side plates; wherein, each supporting inclined rib is provided with a limiting protrusion, the limiting protrusion is a solid structure, the limiting protrusion can support the two adjacent side plates to prevent them from contacting each other when the two side plates are squeezed, so as to retain the cooling channel between the two side plates.

[0008] Furthermore, the extending direction of the limiting protrusion is parallel to the plane where the side plate is located.

[0009] Furthermore, the limiting protrusion is disposed in the middle of the supporting inclined rib, and the limiting protrusion is spaced at the same distance from the two side plates.

[0010] Furthermore, multiple limiting protrusions are provided, and the multiple limiting protrusions are arranged parallel to each other or staggered to each other.

[0011] Furthermore, the cross-sectional shape of the limiting protrusion is any one of a rectangle, trapezoid, cylinder, or rounded rectangle.

[0012] Furthermore, the supporting ribs are flat plates, and multiple supporting ribs are arranged in parallel to each other. The cross-section of the cavity formed by two adjacent supporting ribs and two side plates is a parallelogram.

[0013] Furthermore, the supporting ribs are flat plates, and multiple supporting ribs are arranged in an interlaced manner. The cross-section of the cavity formed by two adjacent supporting ribs and two side plates is triangular, parallelogram, or trapezoidal.

[0014] Furthermore, the supporting diagonal ribs are arc-shaped plates, and adjacent supporting diagonal ribs are connected in sequence to form an S-shaped arc-shaped plate.

[0015] Furthermore, the groove limiting structure is a hollow structure, consisting of a semi-circular arc and a supporting diagonal rib located at the end, wherein the thickness of the groove limiting structure is greater than the thickness of the side plate.

[0016] This application also provides an energy storage battery box device, which includes multiple battery cells and a heat dissipation partition for energy storage devices disposed between two adjacent battery cells.

[0017] Compared to the traditional type, the energy storage device heat dissipation partition and energy storage battery box equipment provided in this application embodiment have added limiting protrusions to the inclined ribs. In this way, even if the inclined ribs are flattened, the limiting protrusions will ensure that the flattened inclined ribs will not directly contact the side plates, thereby ensuring a certain area of ​​cooling channel and ensuring the basic heat dissipation performance required for the normal operation of the battery cell. Attached Figure Description

[0018] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of a traditional air-cooled partition.

[0020] Figure 2 This is a schematic cross-sectional view of the heat dissipation partition of the energy storage device provided in Embodiment 1 of this application.

[0021] Figure 3 This is a schematic cross-sectional view of the heat dissipation partition of the energy storage device provided in Embodiment 2 of this application.

[0022] Figure 4 This is a side view of the heat dissipation partition of the energy storage device provided in Embodiment 2 of this application.

[0023] Figure 5 This is a schematic cross-sectional view of the heat dissipation partition of the energy storage device provided in Embodiment 3 of this application.

[0024] Figure 6 This is a side view of the heat dissipation partition of the energy storage device provided in Embodiment 3 of this application.

[0025] Figure 7 This is a schematic cross-sectional view of the heat dissipation partition of the energy storage device provided in Embodiment 4 of this application.

[0026] Figure 8 This is a side view of the heat dissipation partition of the energy storage device provided in Embodiment 4 of this application.

[0027] Figure 9 This is a schematic diagram of the energy storage battery box device provided in the embodiments of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0032] Example 1

[0033] Please see Figure 2 Embodiment 1 of this application provides a heat dissipation partition 10 for an energy storage device, which is preferably used for air cooling in the field of energy storage. In fact, it can be used in other fields of power batteries. In addition to air cooling, water cooling can also be used. The following description uses air cooling as an example.

[0034] For details, please refer to Figure 2 This application provides a heat dissipation partition 10 for an energy storage device, including two opposing side plates 2, a groove limiting structure 3 located at the connection points of the two side plates 2, and a plurality of supporting ribs 1 located between the two side plates 2. Each supporting rib 1 has a limiting protrusion 11, which is a solid structure. The limiting protrusion 11 can support the two adjacent side plates 2 to prevent them from contacting each other when the two side plates 2 are compressed, thus maintaining a cooling channel between the two side plates 2. The cooling channel can be ventilated for air cooling or circulated with liquid for water cooling.

[0035] In this embodiment, by adding a limiting protrusion 11 to the inclined rib, even if the inclined rib is flattened, the limiting protrusion will ensure that the flattened inclined rib will not directly contact the two side plates 2, thereby ensuring a cooling channel of a certain area and ensuring the basic heat dissipation performance required for the normal operation of the battery cell.

[0036] Furthermore, the extending direction of the limiting protrusion 11 is parallel to the plane where the side plate 2 is located.

[0037] Furthermore, the limiting protrusion 11 is disposed in the middle of the supporting inclined rib 1, and the limiting protrusion 11 is spaced at the same distance from the two side plates 2.

[0038] It is understood that in this embodiment, a limiting protrusion 11 is preferably provided in the middle of a supporting rib 1. In other embodiments, multiple limiting protrusions 11 may also be provided on a supporting rib 1, and the multiple limiting protrusions 11 are arranged parallel to each other or staggered to each other.

[0039] Furthermore, the cross-sectional shape of the limiting protrusion 11 is any one of rectangle, trapezoid, cylinder, or rounded rectangle.

[0040] Furthermore, the supporting rib 1 is a flat plate, and multiple supporting ribs 1 are arranged in parallel to each other. The cross-section of the cavity formed by two adjacent supporting ribs 1 and two side plates 2 is a parallelogram.

[0041] Furthermore, the groove limiting structure 3 is a hollow structure, consisting of a semi-circular arc and a supporting inclined rib 1 located at the end, wherein the thickness of the groove limiting structure 3 is greater than the thickness of the side plate 2.

[0042] In this embodiment, two short hollow slot limiting structures 3 are added to both ends of the heat dissipation partition 10 of the energy storage device. The wall thickness of the slot limiting structure 3 is slightly thicker than that of the side plate 2 in the middle, and the distance between the side plates 2 on both sides is small. This ensures that when the limiting protrusion 11 on the supporting rib 1 contacts the side plates 2, the semi-circular waist slot structure also contacts and bears the force at the same time. Because of its high strength, it can work together with the limiting protrusion 11 to resist the expansion force of the battery cell, and can also effectively prevent the limiting protrusion 11 from being crushed by the excessive expansion force of the battery cell when it is pressed alone, thereby ensuring the stability of the structure and providing a certain area of ​​air cooling channel.

[0043] Compared to existing air-cooled partitions on the market, the limiting protrusions 11 on the supporting diagonal ribs 1 of this structure not only serve as support but also provide a limiting structure, forming a whole that reinforces each other and works together to provide support and limiting functions, eliminating the need to make a separate limiting structure. This results in higher strength, more reliable operation, lower risk of crushing, and a simpler, more ingenious, and more efficient structure.

[0044] This application also provides an energy storage battery box device, which includes multiple battery cells 20 and a heat dissipation partition 10 disposed between two adjacent battery cells 20. The heat dissipation partition 10 is installed between the battery cells 20 to serve as a heat dissipation and cooling device. When the battery cells 20 expand, the limiting protrusions 11 on the supporting ribs 1 can effectively prevent the heat dissipation partition 10 from being crushed, thereby avoiding the basic heat dissipation area from becoming too small due to crushing, which would ultimately affect the normal heat dissipation performance of the battery cells 20 and lead to failure.

[0045] Example 2

[0046] Embodiment 2 includes most of the technical features of Embodiment 1, the difference being that the plurality of supporting diagonal ribs 1 are arranged in an interlaced manner, rather than the plurality of supporting diagonal ribs 1 being arranged in parallel manner as in Embodiment 1.

[0047] Specifically, in this embodiment, the supporting rib 1 is a flat plate, and multiple supporting ribs 1 are arranged in an alternating manner. The cross-section of the cavity formed by two adjacent supporting ribs 1 and two side plates 2 is a triangle and a parallelogram, wherein the triangle and parallelogram are arranged alternately.

[0048] In addition, since the structure of the triangle is very stable, a limiting protrusion 11 can be set on one of the two adjacent supporting ribs 1 of the triangle, while the other supporting rib 1 is not equipped with a limiting protrusion 11, so as to avoid blocking the ventilation duct of the triangle.

[0049] Example 3

[0050] Embodiment 3 incorporates most of the technical features of Embodiment 2, except that the cross-section of the cavity formed by two adjacent supporting ribs 1 and two side plates 2 is trapezoidal, instead of the cross-section of the cavity formed by two adjacent supporting ribs 1 and two side plates 2 in Embodiment 2 being triangular and parallelogram.

[0051] Specifically, in this embodiment, the supporting rib 1 is a flat plate, and multiple supporting ribs 1 are arranged in an interlaced manner. The cross section of the cavity formed by two adjacent supporting ribs 1 and two side plates 2 is trapezoidal.

[0052] Example 4

[0053] Embodiment 4 incorporates most of the technical features of Embodiment 3, the difference being that the supporting rib 1 is an arc-shaped plate instead of a flat plate as in Embodiment 3. This transforms the cross-section of the cavity formed by two adjacent supporting ribs 1 and the two side plates 2 from a trapezoidal shape to a boss shape.

[0054] Specifically, in this embodiment, the supporting diagonal rib 1 is an arc-shaped plate, and adjacent supporting diagonal ribs 1 are connected in sequence to form an S-shaped arc-shaped plate.

[0055] Compared to the traditional type, the heat dissipation partition 10 and energy storage battery box equipment provided in Embodiments 1 to 4 of this application have added limiting protrusions 11 to the inclined ribs. In this way, even if the inclined ribs are flattened, the limiting protrusions will ensure that the flattened inclined ribs will not directly contact the side plates 2, thereby ensuring a certain area of ​​cooling channel and ensuring the basic heat dissipation performance required for the normal operation of the battery cell.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] The above provides a detailed description of a heat dissipation partition and energy storage battery box device for an energy storage device according to the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heat dissipation baffle for an energy storage device, characterized in that, It includes two opposing side plates (2), a groove limiting structure (3) located at the connection position of the two side plates (2) at both ends, and a plurality of supporting ribs (1) located between the two side plates (2); wherein, each supporting rib (1) is provided with a limiting protrusion (11), the limiting protrusion (11) is a solid structure, and the limiting protrusion (11) can support the two adjacent side plates (2) to not contact each other when the two side plates (2) are squeezed, so as to retain the cooling channel between the two side plates (2).

2. The heat dissipation partition of the energy storage device as described in claim 1, characterized in that, The extension direction of the limiting protrusion (11) is parallel to the plane of the side plate (2).

3. The heat dissipation baffle of the energy storage device as described in claim 2, characterized in that, The limiting protrusion (11) is located in the middle of the supporting inclined rib (1), and the limiting protrusion (11) is spaced at the same distance from the two side plates (2).

4. The heat dissipation baffle of the energy storage device as described in claim 1, characterized in that, The limiting protrusions (11) are provided in multiple ways, and the multiple limiting protrusions (11) are arranged in parallel or staggered with each other.

5. The heat dissipation partition of the energy storage device as described in claim 1, characterized in that, The cross-sectional shape of the limiting protrusion (11) is any one of rectangle, trapezoid, cylinder, or rounded rectangle.

6. The heat dissipation baffle of the energy storage device as described in claim 1, characterized in that, The supporting rib (1) is a flat plate, and multiple supporting ribs (1) are arranged in parallel to each other. The cross section of the cavity formed by two adjacent supporting ribs (1) and two side plates (2) is a parallelogram.

7. The heat dissipation partition of the energy storage device as described in claim 1, characterized in that, The supporting ribs (1) are flat plates, and multiple supporting ribs (1) are arranged in an alternating manner. The cross section of the cavity formed by two adjacent supporting ribs (1) and two side plates (2) is triangular, parallelogram or trapezoidal.

8. The heat dissipation partition of the energy storage device as described in claim 1, characterized in that, The supporting diagonal rib (1) is an arc-shaped plate, and adjacent supporting diagonal ribs (1) are connected in sequence to form an S-shaped arc-shaped plate.

9. The heat dissipation partition of the energy storage device as described in claim 1, characterized in that, The groove limiting structure (3) is a hollow structure, consisting of a semi-circular arc and a supporting inclined rib (1) located at the end, wherein the thickness of the groove limiting structure (3) is greater than the thickness of the side plate (2).

10. An energy storage battery box device, characterized in that, It includes multiple battery cells and a heat dissipation partition for the energy storage device as described in any one of claims 1 to 9, disposed between two adjacent battery cells.

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