Battery tray

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a battery tray. The tray comprises a tray body and a tray lining, the tray body comprises a supporting part and a side part, the supporting part is connected with the side part, the tray lining is installed on the side, facing the side part, of the supporting part, a gap is formed between the tray lining and the supporting part, the supporting part is provided with a plurality of first bearing holes, and the tray lining comprises a plurality of sub-liners; and each sub-lining is provided with a plurality of second bearing holes. Due to the fact that the gap is formed between the tray lining and the supporting portion of the tray body, air circulation can be facilitated, and the heat dissipation effect is improved. Besides, the second bearing holes in the sub-linings are aligned with the first bearing holes more accurately, and when the first bearing holes are aligned with the second bearing holes, the exposed area of the bottom of the battery is the largest, so that the tray lining adopts a split type design, and the heat dissipation effect of the cylindrical battery can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery tray. Background Technology

[0002] Cylindrical lithium batteries require formation and capacity testing after manufacturing to activate them and stabilize performance parameters such as internal resistance, output voltage, current, and power. This process involves repeated charging and discharging, generating significant heat and causing the battery to heat up. High temperatures can lead to fluctuations in internal resistance, thus affecting performance parameters. Therefore, controlling the ambient temperature of the battery during formation and capacity testing is crucial.

[0003] During the formation and capacity testing process, cylindrical batteries are typically placed in battery trays, arranged in a dense matrix to facilitate charging and discharging operations. In automated logistics transportation and storage, cylindrical batteries are also generally arranged in battery trays. However, the current structure of the battery trays is not conducive to heat dissipation during the charging and discharging process of lithium batteries, affecting battery safety and potentially shortening their lifespan.

[0004] Therefore, there is an urgent need for a battery tray to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a battery tray with good heat dissipation performance.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A battery tray includes a tray body and a tray liner. The tray body includes a support portion and a side portion. The support portion is connected to the side portion. The tray liner is installed on the side of the support portion facing the side portion. There is a gap between the tray liner and the support portion. The support portion is provided with a plurality of first support holes. The tray liner includes a plurality of sub-liners. Each sub-liner is provided with a plurality of second support holes. Along the axial direction of the first support holes, the projection of the first support holes onto a preset plane is a first projection. The projection of the second support holes onto the preset plane is a second projection. The preset plane is perpendicular to the axial direction of the first support holes. The first projection and the second projection at least partially overlap.

[0008] This utility model has at least the following beneficial effects:

[0009] The battery tray provided by this utility model has a gap between the tray liner and the support part of the tray body, which facilitates air circulation and improves heat dissipation. In addition, the tray liner includes multiple sub-liners arranged in a row. Compared with the tray liner being a whole, the second support hole on the sub-liner is more accurately aligned with the first support hole. When the first support hole and the second support hole are aligned, the exposed area of ​​the bottom of the battery is the largest. Once the position of the second support hole is offset from the position of the first support hole, the exposed area of ​​the bottom of the battery will decrease, thereby affecting the heat dissipation rate. Therefore, the tray liner adopts a split design, which can further improve the heat dissipation effect of cylindrical batteries. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0011] Figure 1 A top view of the battery tray provided in an embodiment of this utility model;

[0012] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0013] Figure 3 A partial cross-sectional view of the battery tray provided in an embodiment of this utility model;

[0014] Figure 4 for Figure 2 Enlarged view of section B in the middle

[0015] Figure 5 This is a first-view structural schematic diagram of the battery tray provided in an embodiment of the present utility model;

[0016] Figure 6 A second-view structural schematic diagram of the battery tray provided in an embodiment of this utility model (one sub-liner is hidden);

[0017] Figure 7 for Figure 6 Enlarged view of a section at point E in the middle;

[0018] Figure 8 for Figure 6 Enlarged view of a section in area III;

[0019] Figure 9 This is a schematic diagram of the sub-liner provided in an embodiment of the present utility model;

[0020] Figure 10 for Figure 9 Enlarged view of a section at point F in the middle;

[0021] Figure 11 A top view of the tray body provided in an embodiment of this utility model;

[0022] Figure 12 for Figure 11 Enlarged view of a section at point G in the middle;

[0023] Figure 13 A first-view structural schematic diagram of another battery tray structure provided in an embodiment of this utility model;

[0024] Figure 14 for Figure 13 Enlarged view of a section at point H;

[0025] Figure 15 A second-view structural schematic diagram of another battery tray structure provided in an embodiment of this utility model;

[0026] Figure 16 for Figure 15 Enlarged view of a section at point I;

[0027] Figure 17 A top view of another structure of the tray body provided in this embodiment of the utility model;

[0028] Figure 18 for Figure 17 Enlarged view of section II in the middle.

[0029] In the picture:

[0030] 1. Pallet body; 11. Support component; 111. First support hole; 112. First zone; 113. Second zone; 114. Limiting groove; 115. Reinforcing plate; 116. Ventilation hole; 12. Connecting plate; 121. First plate; 122. Second plate; 13. Side; 131. Hole; 2. Pallet liner; 21. Sub-liner; 211. Second support hole; 2111. First hole segment; 2112. Second hole segment; 212. Heat dissipation hole; 22. Support column; 221. Connecting hole; 3. Gap. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0033] In this invention, unless otherwise explicitly 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 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 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.

[0034] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] like Figures 1 to 18 As shown, this application provides a battery tray that can dissipate heat from the battery to ensure its performance.

[0036] In this application, "multiple" means two or more (including two).

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 15 and Figure 16As shown, the battery tray includes a tray body 1 and a tray liner 2. The tray body 1 includes a support portion and a side portion 13. The support portion is connected to the side portion 13. The tray liner 2 is installed above the support portion of the tray body 1. There is a gap 3 between the tray liner 2 and the support portion of the tray body 1. The support portion is provided with a plurality of first support holes 111. The tray liner 2 includes a plurality of sub-liners 21. Each sub-liner 21 is provided with a plurality of second support holes 211. Along the axial direction of the first support hole 111, the projection of the first support hole 111 onto a preset plane is the first projection. The projection of the second support hole 211 onto the preset plane is the second projection. The preset plane is perpendicular to the axial direction of the first support hole 111. The first projection and the second projection at least partially overlap.

[0038] Because there is a gap 3 between the tray liner 2 and the support part of the tray body 1, air circulation is facilitated, improving the heat dissipation effect. In addition, the tray liner 2 includes multiple sub-liners 21. Compared with the tray liner 2 being a whole, the second support hole 211 on the sub-liner 21 is more accurately aligned with the first support hole 111. When the first support hole 111 and the second support hole 211 are aligned, the exposed area of ​​the bottom of the battery is the largest. Once the position of the second support hole 211 is offset from the position of the first support hole 111, the exposed area of ​​the bottom of the battery will decrease, thus affecting the heat dissipation rate. Therefore, the tray liner 2 adopts a split design to reduce the probability of the second support hole 211 and the first support hole 111 being offset, further improving the heat dissipation effect of the cylindrical battery.

[0039] It should be noted that both the pallet liner 2 and the pallet body 1 are obtained by injection molding. That is, the support part and the side part 13 are integrally molded structures, and both the pallet body 1 and the pallet liner 2 are integrally molded structures. The side part 13 of the pallet body 1 is the enclosure set at the edge of the support part, and the side part 13 provides a limit for the pallet liner 2.

[0040] Multiple sub-liners 21 are arranged in a matrix, and adjacent sub-liners 21 abut against each other, thereby improving the stability of battery placement and preventing shaking.

[0041] In some embodiments, the height of gap 3 is 10mm-60mm. For example, the height of gap 3 can be selected as 10mm, 20mm, 30mm, 40mm, 50mm or 60mm. This embodiment does not make a specific limitation. When the height of gap 3 is 10mm, the height of the battery tray can be guaranteed, and the heat dissipation effect can also be achieved. When the height of gap 3 is 60mm, the amount of air entering gap 3 can be increased, further improving the heat dissipation effect.

[0042] In some embodiments, the overlapping area of ​​the first projection and the second projection is greater than one-third of the area of ​​the second support hole 211 and less than the area of ​​the second support hole 211. This ensures that the second support hole 211 and the first support hole 111 are always connected, so that air can be dissipated from the first support hole 111 to the bottom of the battery located in the second support hole 211. The fact that the overlapping area of ​​the first projection and the second projection is less than the area of ​​the second support hole 211 prevents the battery from entering the first support hole 111 and falling out, ensuring that the battery is supported by the tray body 1.

[0043] In some embodiments, combined with Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, the support part of the pallet body 1 is provided with a limiting groove 114, and the bottom of the sub-liner 21 is provided with a support column 22. The sub-liner 21 is installed in the limiting groove 114 through the support column 22. The setting of the support column 22 can install the sub-liner 21 on the pallet body 1. In addition, the support column 22 can also form a gap 3 between the pallet body 1 and the sub-liner 21, thereby forming a space for gas circulation between the pallet body 1 and the pallet liner 21 to achieve the purpose of heat dissipation.

[0044] Specifically, such as Figure 8 and Figure 10 As shown, the support column 22 has a connecting hole 221, and the limiting groove 114 has an internal thread. One end of the bolt passes through the connecting hole 221 and is threadedly connected to the limiting groove 114. The support column 22 and the sub-liner 21 are connected by a bolt thread, which improves the connection stability between the support column 22 and the sub-liner 21. In addition, the threaded connection between the support column 22 and the sub-liner 21 facilitates their connection, allowing the sub-liner 21 to be replaced according to the number of batteries. For example, a nut with an internal thread is provided in the limiting groove 114, so that one end of the bolt passes through the connecting hole 221 and is directly threadedly connected to the nut. Furthermore, the connecting hole 221 is a stepped hole, which can hide the other end of the bolt, preventing the bolt head from colliding with the cylindrical battery and protecting the cylindrical battery.

[0045] Of course, in other embodiments, the support column 22 and the limiting groove 114 are interference-fitted together, which can also achieve the connection between the support column 22 and the sub-liner 21.

[0046] In some embodiments, such as Figure 8 As shown, the inner liner 21 has heat dissipation holes 212. The heat dissipation holes 212 are connected to the gap 3, so that air can flow from the gap 3 to the heat dissipation holes 212 and out of the gap 3 through the heat dissipation holes 212, realizing the circulation and diffusion of airflow.

[0047] In some embodiments, combined with Figure 4 , Figure 8 and Figure 10As shown, the second support hole 211 includes a first hole segment 2111 and a second hole segment 2112. One end of the second hole segment 2112 communicates with the first hole segment 2111, and the second hole segment 2112 is located at the end of the first hole segment 2111 away from the support portion of the tray body 1. The inner diameter of the second hole segment 2112 gradually increases in the direction away from the first hole segment 2111. It can be understood that the second hole segment 2112 is a flared hole, thus providing guidance when the battery enters the second support hole 211, facilitating battery installation. For example, both the first hole segment 2111 and the second hole segment 2112 are circular holes, which prevents the cylindrical battery from shaking during transportation.

[0048] In some embodiments, such as Figure 2 , Figure 7 , Figure 11 and Figure 12 As shown, the first support hole 111 is an elongated hole, and the central axis of the elongated hole 111 is collinear with the central axis of the second support hole 211. The first support hole 111 is an elongated hole, and the first hole section 2111 is a circular hole. This arrangement allows the bottom of the cylindrical battery to be cooled by flowing air, thereby avoiding poor air circulation and temperature rise at the bottom of the cylindrical battery.

[0049] For example, the first support hole 111 is an oblong hole, the length of which is greater than the diameter of the first hole segment 2111. This can limit the cylindrical battery to prevent it from shaking while also cooling it down. In addition, the increased heat dissipation area of ​​the oblong hole can further improve the heat dissipation efficiency of the tray body 1. Of course, the first support hole 111 can also be a rectangular hole.

[0050] For example, the orthographic projection of the two long sides of the elongated hole onto the preset plane lies within the orthographic projection of the second support hole 211 onto the preset plane. Furthermore, the distance between the two long sides should be greater than one-third and less than two-thirds of the diameter of the second support hole 211. If the distance between the two long sides is too small, the support of the support member 11 will be unstable and prone to wobbling. If the distance is too large, the bottom of the battery is prone to detaching from the support of the long sides due to vibration or wobbling during transport, resulting in tilting or even collision and damage. Therefore, the distance between the two long sides should be greater than one-third and less than two-thirds of the diameter of the second support hole 211, which provides stable support for the battery and prevents the battery from separating from the support member 11.

[0051] Of course, in some other embodiments, the first support hole 111 is not limited to an elongated hole, but can also be a polygonal hole or a square hole, so that the first support hole 111 can be adapted to batteries with cylindrical or polygonal prism structures.

[0052] In some embodiments, such as Figure 11 and Figure 12 As shown, the support portion has a first region 112 and a second region 113. The first region 112 and the second region 113 are alternately arranged along the first and second directions, and the central axis of the first support hole 111 in the first region 112 extending along its length is perpendicular to the central axis of the first support hole 111 in the second region 113. That is, the long side of the first support hole 111 in the first region 112 is perpendicular to the long side of the first support hole 111 in the second region 113. When the cylindrical battery shakes, the force exerted by the cylindrical battery on the first support hole 111 in the first region 112 is in a different direction than the force exerted by the cylindrical battery on the first support hole 111 in the second region 113. Therefore, the overall force on the tray body 1 is reduced compared to a tray body 1 where the first support hole 111 in the first region 112 and the second support hole 211 in the second region 113 extend in the same direction. This arrangement improves the service life of the tray body 1.

[0053] In addition, such as Figure 12 As shown, the first zone 112 and the second zone 113 are separated by a reinforcing plate 115. The reinforcing plate 115 can improve the overall strength of the pallet body 1.

[0054] In some embodiments, the support includes multiple connecting plates 12 and multiple support members 11. Each support member 11 has a first support hole 111. Each connecting plate 12 includes a first plate 121 and a second plate 122 that are perpendicular to each other. The first plate 121 is located in the middle of the second plate 122. Both ends of the first plate 121 and the second plate 122 are respectively fixed to different support members 11. This arrangement improves the overall strength of the support members 11, especially when supporting heavy cylindrical batteries. The arrangement of the first plate 121 and the second plate 122 strengthens the outer periphery of the support members 11, preventing damage to the support members 11 and leakage of cylindrical batteries during battery tray handling. It is understood that the first plate 121 and the second plate 122 are arranged perpendicularly, allowing for the placement of more support members 11 to improve the load-bearing capacity of the battery tray.

[0055] Furthermore, in order to ensure that the airflow direction in gap 3 is not fixed, thus guaranteeing that the portion of the battery within gap 3 experiences more uniform cooling, such as... Figure 5 and Figure 6 As shown, the side 13 of the tray body 1 has a perforated hole 131. For example, there can be multiple perforated holes 131. Some perforated holes 131 are connected to the gap 3, while other perforated holes 131 are connected to the tray liner 2 and the side wall of the tray body 1 for heat dissipation in this area. In this way, heat dissipation can be achieved at multiple locations of the cylindrical battery, and the temperature of different areas can be made consistent to ensure that the first-pass yield meets the standard.

[0056] In other embodiments, such as Figures 13 to 18 As shown, the support member 11 extends into a column shape towards one side of the sub-liner 21. The side wall of the support member 11 is provided with ventilation holes 116. A support plate is provided between the support member 11 and the sub-liner 21. The support plate has a third support hole. The ventilation hole 116, the first support hole 111, the third support hole and the second support hole 211 are connected. In this way, the lower part of the cylindrical battery can be cooled by flowing air. The support plate and the sub-liner 21 are connected by a support column 22 and a limiting groove 114.

[0057] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A battery tray, characterized by, The tray includes a tray body (1) and a tray liner (2), the tray body (1) includes a support part and a side part (13), the support part is connected with the side part (13), the tray liner (2) is installed on one side of the support part facing the side part (13), a gap (3) is formed between the tray liner (2) and the support part, the support part is provided with a plurality of first supporting holes (111), the tray liner (2) includes a plurality of sub-liners (21), each of the sub-liners (21) is provided with a plurality of second supporting holes (211), along the axial direction of the first supporting hole (111), the projection of the first supporting hole (111) on a preset plane is a first projection, the projection of the second supporting hole (211) on the preset plane is a second projection, the preset plane is perpendicular to the axial direction of the first supporting hole (111), and the first projection at least partially overlaps the second projection.

2. The battery tray of claim 1, wherein, The overlapping area of the first projection and the second projection is greater than one third of the area of the second supporting hole (211) and less than the area of the second supporting hole (211).

3. The battery tray of claim 1, wherein, The support part of the tray body (1) is provided with a limiting groove (114), the bottom of the sub-liner (21) is provided with a supporting column (22), and the sub-liner (21) is installed in the limiting groove (114) through the supporting column (22).

4. The battery tray of claim 3, wherein, The supporting column (22) has a connecting hole (221), the limiting groove (114) has an internal thread, and a bolt passes through the connecting hole (221) and is connected with the internal thread of the limiting groove (114).

5. The battery tray of any one of claims 1-4, wherein, The second supporting hole (211) includes a first hole section (2111) and a second hole section (2112), one end of the second hole section (2112) communicates with the first hole section (2111), and the second hole section (2112) is arranged at the end of the first hole section (2111) away from the support part, and the inner diameter of the second hole section (2112) gradually increases in the direction away from the first hole section (2111).

6. The battery tray of any one of claims 1-4, wherein, The sub-liner (21) is provided with a heat dissipation hole (212) communicating with the gap (3).

7. The battery tray of any one of claims 1-4, wherein, The first supporting hole (111) is an elongated hole, and along the axial direction of the first supporting hole (111), the center axis of the elongated hole is arranged in line with the center axis of the second supporting hole (211).

8. The battery tray of claim 7, wherein, The support part has a first area (112) and a second area (113), and along the first direction and the second direction, the first area (112) and the second area (113) are alternately arranged, and the center axis of the first supporting hole (111) in the length extension direction of the first area (112) and the center axis of the first supporting hole (111) in the length extension direction of the second area (113) are distributed perpendicular to each other.

9. The battery tray of claim 8, wherein, The first area (112) and the second area (113) are separated by a reinforcing plate (115).

10. The battery tray of any one of claims 1-4, wherein, The support part comprises a plurality of connecting plates (12) and a plurality of supporting pieces (11), the supporting pieces (11) are provided with first supporting holes (111), the connecting plates (12) comprise mutually perpendicular first plates (121) and second plates (122), the first plates (121) are located in the middle of the second plates (122), and two ends of the first plates (121) and two ends of the second plates (122) are fixedly connected with different supporting pieces (11) respectively.

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