Battery box with good heat dissipation performance

Abstract

The utility model discloses a battery box with good heat dissipation performance, the battery box comprises a box shell and a battery pack, the box shell is enclosed to form a cavity, a plurality of inner convex shell parts are arranged on the box shell, the inner convex shell parts protrude towards the inner side of the cavity, an air flowing space is formed between the adjacent inner convex shell parts, the box shell is provided with first heat dissipation holes communicated with the cavity, and the first heat dissipation holes are communicated with the cavity. And the battery pack is arranged in the cavity and is in contact with the inner convex shell part. According to the battery box, by arranging the inner convex shell part, the contact area between the battery pack and the surface of the box shell is reduced, then the activity space of airflow in the battery box can be increased, the upper limit of the heat dissipation effect of the battery box is improved, the first heat dissipation holes are further formed in the box shell, hot air in the box shell can be discharged easily, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery boxes, in particular to a battery box with good heat dissipation performance. Background Art

[0002] New energy batteries refer to batteries that can store and release electrical energy, and are usually used in fields such as electric vehicles, energy storage systems, solar energy, and wind energy. Compared with traditional lead-acid batteries, new energy batteries have higher energy density, longer lifespan, higher safety performance, and faster charging speed. Currently, new energy battery technologies mainly include lithium-ion batteries, sodium-ion batteries, solid-state batteries, metal-air batteries, etc. In the new energy field, photovoltaic power generation and wind power generation are common new energy power generation methods, and the electrical energy generated by power generation needs to be stored through energy storage batteries, and the energy storage batteries need to be stored in a battery box shell.

[0003] Currently, a dedicated area is provided on a common battery box for heat transfer and adjustment between the inside and outside of the battery box. However, this heat dissipation adjustment method has a small heat dissipation area and limited heat dissipation effect. Moreover, when the battery pack contacts the box shell, due to the large contact area, the air flow space is reduced, which further restricts the heat dissipation effect. Summary of the Utility Model

[0004] In order to solve one of the above technical defects, an embodiment of the present application provides a battery box with good heat dissipation performance to solve the problem of low heat dissipation efficiency of the existing battery box.

[0005] The utility model adopts the following technical solutions:

[0006] A battery box with good heat dissipation performance, comprising:

[0007] A box shell, the box shell encloses to form a cavity, a plurality of inner convex shell parts are arranged on the box shell, the inner convex shell parts protrude towards the inner side of the cavity, an air flow space is formed between adjacent inner convex shell parts, and a first heat dissipation hole communicating with the cavity is arranged on the box shell;

[0008] A battery pack, the battery pack is arranged in the cavity, and the battery pack contacts the inner convex shell part.

[0009] Optionally, the inner convex shell part includes a first top shell part and a first transition shell part connecting the first top shell part, and at least the first top shell part is provided with the first heat dissipation hole.

[0010] Optionally, the inner convex shell part extends along a straight line, a plurality of first heat dissipation holes are arranged on each inner convex shell part, the first heat dissipation holes are sequentially arranged along the length direction of the inner convex shell, and each first heat dissipation hole is a long strip hole.

[0011] Optionally, the box shell has:

[0012] Bottom shell;

[0013] Two first side shells, and the two first side shells are respectively arranged on both sides of the bottom shell along the width direction;

[0014] Two second side shells, and the two second side shells are respectively arranged on both sides of the bottom shell along the length direction, and the second side shells are respectively connected to the two first side shells;

[0015] At least the inner convex shell parts are arranged on the bottom shell and the first side shells, and the inner convex shell parts on the bottom shell or the first side shells are parallel to each other.

[0016] Optionally, the battery box with good heat dissipation performance includes a plurality of partition plates, and each of the partition plates is arranged in the cavity, and each of the partition plates is parallel to the first side shell;

[0017] Each of the partition plates divides the cavity into a plurality of battery cavities, and each of the battery cavities is used for arranging battery packs.

[0018] Optionally, the partition plate has a plurality of first-direction convex shells and a plurality of second-direction convex shells;

[0019] The first-direction convex shells and the second-direction convex shells respectively protrude towards both sides in the thickness direction of the partition plate so as to respectively contact the battery packs on both sides of the partition plate.

[0020] Optionally, second heat dissipation holes are arranged on both the first-direction convex shells and the second-direction convex shells.

[0021] Optionally, second top shell parts are arranged at the tops of both the first-direction convex shells and the second-direction convex shells, and the second top shell parts are flat shells so as to fit the battery packs.

[0022] Optionally, second heat dissipation holes are arranged on at least the second top shell parts.

[0023] Optionally, the first-direction convex shells and the second-direction convex shells are alternately arranged in sequence along the width direction of the partition plate, and both the first-direction convex shells and the second-direction convex shells extend along the length direction of the partition plate.

[0024] By adopting the above technical solutions, the present application has the following beneficial effects:

[0025] In the battery box of the present application, by arranging the inner convex shell parts, the contact area between the battery packs and the surface of the box shell is reduced, thereby increasing the activity space of the airflow inside the battery box, improving the upper limit of the heat dissipation effect of the battery box, and the first heat dissipation holes are also arranged on the box shell, which is beneficial to the discharge of the hot air inside the box shell, further improving the heat dissipation effect.

[0026] The following further describes in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0027] As part of this application, the accompanying drawings are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0028] Figure 1 Shows the structural schematic diagram of a battery box with good heat dissipation performance provided by an embodiment of the present disclosure;

[0029] Figure 2 Shows Figure 1 The enlarged view of part A therein;

[0030] Figure 3 Shows the internal structural schematic diagram of a battery box with good heat dissipation performance provided by an embodiment of the present disclosure;

[0031] Figure 4 Shows Figure 3 The enlarged view of part B therein;

[0032] Figure 5 Shows the structural schematic diagram of the partition of a battery box with good heat dissipation performance provided by an embodiment of the present disclosure;

[0033] Figure 6 Shows the state diagram of a battery box with good heat dissipation performance provided by an embodiment of the present disclosure after removing each partition;

[0034] Figure 7 Shows Figure 6 The enlarged view of part C therein.

[0035] In the figure: 1. Box shell; 11. Bottom shell; 12. First side shell; 13. Second side shell; 131. Guide strip; 132. Elastic limit block; 133. Handle groove; 134. Wiring part; 1a. Inner convex shell part; 1b. First heat dissipation hole; 2. Partition; 21. Main board part; 211. First-direction convex shell; 212. Second-direction convex shell; 213. Second heat dissipation hole; 22. Edge board part; 221. Avoidance notch; 3. Box cover.

[0036] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] See Figures 1 to 7 As shown, the embodiment of the present application provides a battery box with good heat dissipation performance, including: a box shell 1 and a battery pack. The box shell 1 encloses to form a cavity. A plurality of inner convex shell parts 1a are provided on the box shell 1, and the inner convex shell parts 1a protrude towards the inside of the cavity. An air flow space is formed between adjacent inner convex shell parts 1a. A first heat dissipation hole 1b communicating with the cavity is provided on the box shell 1. The battery pack is arranged in the cavity and contacts the inner convex shell parts 1a. By providing the inner convex shell parts 1a, the inner convex shell parts 1a can be used for contacting and positioning cooperation with the battery pack. At the same time, the contact area between the battery pack and the surface of the box shell 1 is reduced, thereby increasing the activity space of the air flow inside the battery box and improving the upper limit of the heat dissipation effect of the battery box. Moreover, a first heat dissipation hole 1b is also provided on the box shell 1, which is conducive to the discharge of the hot air inside the box shell 1 and further improves the heat dissipation effect.

[0042] In some possible implementation solutions, see Figure 2As shown, the inner convex shell part 1a includes a first top shell part and a first transition shell part connecting the first top shell part. A flat shell part can be provided on the box shell between two adjacent inner convex shell parts 1a. The first transition shell parts on both sides of the first top shell part are connected to the corresponding flat shell parts. At least the first top shell part is provided with the first heat dissipation holes 1b. The first top shell part is in direct contact with the battery pack. By providing the first heat dissipation holes 1b on the first top shell part, the heat radiated by the battery pack can be directly discharged through the first heat dissipation holes 1b, significantly improving the heat dissipation efficiency. The area between adjacent inner convex shell parts 1a on the box shell 1 can be a flat shell part. Without considering cost, heat dissipation holes can also be opened on the flat shell part, and the heat dissipation holes are directly communicated with the air flow space, which is more conducive to improving the heat dissipation efficiency.

[0043] In some possible implementation schemes, the inner convex shell part 1a extends along a straight line, the inner convex shell part 1a is strip-shaped, and a plurality of first heat dissipation holes 1b are provided on each inner convex shell part 1a. The first heat dissipation holes 1b are arranged in sequence along the length direction of the inner convex shell, and each first heat dissipation hole 1b is a long strip hole, thereby increasing the area of the heat dissipation holes and facilitating the discharge of the heat dissipation quantity.

[0044] In some possible implementation schemes, refer to Figure 6 and Figure 7 As shown, the box shell 1 has: a bottom shell 11, two first side shells 12 and two second side shells 13. The two first side shells 12 are respectively arranged on both sides of the bottom shell 11 along the width direction, the two second side shells 13 are respectively arranged on both sides of the bottom shell 11 along the length direction, the second side shells 13 are respectively connected to the two first side shells 12, at least the bottom shell 11 and the first side shells 12 are provided with the inner convex shell parts 1a, and the inner convex shell parts 1a on the bottom shell 11 or the first side shells 12 are parallel to each other.

[0045] The inner convex shell parts 1a are provided on three surfaces (two first side shells 12 and one bottom shell 11) of the box shell 1 of the present application, increasing the contact area between the box shell 1 and the outside air and improving the heat dissipation effect. The inner convex shell parts 1a on the three surfaces are in direct contact with the battery pack, reducing the contact surface between the box shell 1 and the battery pack, increasing the flow of air in the battery box, further improving the upper limit of the heat dissipation effect of the battery box, and heat dissipation holes are provided on all three surfaces, improving the air flow efficiency inside and outside the box shell 1.

[0046] In some possible implementation schemes, refer to Figure 3 As shown, the battery box with good heat dissipation performance includes a plurality of partitions 2. Each partition 2 is arranged in the cavity, each partition 2 is parallel to the first side shell 12, and each partition 2 divides the cavity into a plurality of battery cavities, and each battery cavity is used for arranging a battery pack.

[0047] Refer toFigure 4 As shown, the partition plate 2 has a plurality of first-direction convex shells 211 and a plurality of second-direction convex shells 212. The first-direction convex shells 211 and the second-direction convex shells 212 protrude towards both sides in the thickness direction of the partition plate 2 respectively to contact the battery packs on both sides of the partition plate 2. The partition plate 2 protrudes towards both sides at multiple places, and the longitudinal section of the partition plate 2 is approximately a structure of multiple S-shaped series connections, constituting a structure suitable for heat dissipation. The first-direction convex shells 211 and the second-direction convex shells can respectively contact and position with the corresponding battery packs. At the same time, the contact area between the box shell 1 and the battery packs can be reduced, and the gas flow space inside the box shell 1 can be increased.

[0048] Optionally, as shown in Figure 4 Second heat dissipation holes 213 are provided on both the first-direction convex shells 211 and the second-direction convex shells 212. The second heat dissipation holes 213 are close to the corresponding battery packs, facilitating the heat of the battery packs to be introduced into the air flow space formed by the convex shells through the second heat dissipation holes 213, which is beneficial to accelerating heat dissipation.

[0049] In some possible implementation schemes, second top shell parts are provided at the tops of both the first-direction convex shells 211 and the second-direction convex shells 212. The second top shell parts are flat shells to fit with the battery packs, playing the roles of contacting the battery packs and limiting the battery packs.

[0050] At least the second heat dissipation holes 213 are provided on the second top shell parts. The first-direction convex shells 211 and the second-direction convex shells 212 are alternately arranged in sequence along the width direction of the partition plate 2, and both the first-direction convex shells 211 and the second-direction convex shells 212 extend along the length direction of the partition plate 2.

[0051] Embodiment 2

[0052] As shown in Figures 1 to 7As shown, the embodiments of the present application provide a further detailed description of a battery box with good heat dissipation performance. The battery box with good heat dissipation performance includes: a box shell 1 and several partition plates 2. The box shell 1 encloses to form a cavity. A plurality of connecting parts are provided on each of the two opposite side shells (the second side shell) of the box shell 1. The positions of the connecting parts on the two side shells correspond to each other one by one. Each partition plate 2 is arranged in the cavity. The partition plates 2 are arranged at intervals in sequence. A battery cavity for accommodating a battery pack is formed between each adjacent two of the partition plates 2 and the box shell 1. Both ends of each partition plate 2 are detachably connected to the two opposite connecting parts respectively. The partition plate 2 has a plurality of first-direction convex shells 211 and a plurality of second-direction convex shells 212. The first-direction convex shells 211 and the second-direction convex shells 212 protrude towards both sides in the thickness direction of the partition plate 2 respectively to contact the battery packs on both sides of the partition plate 2. By setting the direction convex shells, the contact area between the battery pack and the partition plate in the battery box of the present application is reduced, and thus the activity space of the airflow inside the battery box can be increased, and the upper limit of the heat dissipation effect of the battery box is improved.

[0053] In some possible implementation schemes, the connecting part has a slot, and the partition plate 2 can be inserted into or withdrawn from the slot. The slot extends longitudinally, which can facilitate the partition plate 2 to be inserted into the slot from top to bottom. When it is necessary to disassemble the partition plate 2, the partition plate 2 can be moved upward to withdraw the partition plate 2.

[0054] In some possible implementation schemes, refer to Figure 4 As shown, the connecting part includes two guiding strips 131 arranged at intervals on the inner wall of the side shell (the second side shell). The slot is formed between the two guiding strips 131. The partition plate 2 is limited between the two guiding strips 131. The guiding strips 131 can be integrally formed with the box shell 1, or the guiding strips 131 and the box shell 1 can be two separate parts, and the guiding strips 131 are fixedly connected to the box shell 1.

[0055] In some possible implementation schemes, the box shell 1 has: a bottom shell 11, two first side shells and two second side shells. The two first side shells are respectively arranged on both sides of the bottom shell 11 along the width direction. The two second side shells are respectively arranged on both sides of the bottom shell 11 along the length direction. The second side shells are respectively connected to the two first side shells, and the extension length of the first side shell is greater than that of the second side shell. Various connecting parts can be arranged on the second side shell. The partition plate 2 can be inserted into different connecting parts to form battery cavities of different sizes to adapt to battery packs of different sizes.

[0056] In some possible implementation schemes, refer to Figure 4 As shown, the connecting part includes an elastic limiting block 132. The elastic limiting block 132 is respectively connected to the tops of the two guiding strips 131. The elastic limiting block 132 has a notch groove, and the notch groove communicates with the slot. The partition plate 2 can pass through the notch groove and be inserted into the slot between the two guiding strips 131.

[0057] When installing the partition 2, the partition 2 can be used to expand the cutout groove. Elastic deformation occurs at the cutout groove, which has a damping effect on the partition 2. When gradually inserting the partition 2 completely into the slot and the partition 2 disengages from the cutout groove, the cutout groove resumes deformation and becomes narrower. The limiting block seals the end of the slot to prevent the partition 2 from disengaging from the slot.

[0058] In a possible implementation, refer to Figure 3 and Figure 5 As shown, a wiring portion 134 is provided on one of the side cases (the second side case), and an avoidance notch 221 is provided on at least a part of the partition 2. In the state where the partition 2 is installed in the case 1, the avoidance notch 221 of the partition 2 is located on one side of the wiring portion 134, and there is a gap between the avoidance notch 221 and the wiring portion 134. The setting of the avoidance notch 221 facilitates the connection of the cable at the wiring portion 134 and can avoid interference with the concave wiring portion 134 when the partition 2 is inserted into the slot. The wiring portion 134 can facilitate the connection of the internal and external lines of the battery box.

[0059] In some possible implementations, refer to Figure 5 As shown, the partition 2 includes a main board portion 21 and an edge board portion 22. The first-direction convex shell 211 and a plurality of second-direction convex shells 212 are provided on the main board portion 21. The edge board portion 22 is connected to the main board portion 21. The edge board portion 22 is a flat board and is detachably connected to the connecting portion. The flat edge board can be smoothly inserted into a relatively narrow slot.

[0060] The main board portion 21 and the edge board portion 22 are integrally formed, or the main board portion 21 and the edge board portion 22 are connected and fixed by any one or more of welding, snap connection, and fastener connection.

[0061] In some possible implementations, refer to Figure 1 As shown, a handle groove 133 is provided on the side case (the second side case) where the connecting portion is provided, which facilitates applying force to the battery box by hand or a tool through the handle groove 133 to adjust the position of the battery box.

[0062] In some possible implementations, heat dissipation holes are provided on the partition 2, which improves the heat dissipation efficiency. Among them, heat dissipation holes are provided on both the first-direction convex shell 211 and the second-direction convex shell 212. A flanging portion is provided at the opening edge of the top of the case 1, which can facilitate the connection with the lid 3 of the battery box through fasteners and facilitate disassembly and assembly.

[0063] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A battery box with good heat dissipation performance, characterized in that: include: A box shell, the box shell is enclosed to form a cavity, a plurality of inwardly convex shell parts are arranged on the box shell, the inwardly convex shell parts protrude toward the inside of the cavity, air flow spaces are formed between adjacent inwardly convex shell parts, and a first heat dissipation hole communicating with the cavity is arranged on the box shell; A battery pack is disposed in the cavity, and the battery pack contacts the inner convex shell portion.

2. The battery box with good heat dissipation performance according to claim 1, characterized in that: The inner convex shell portion includes a first top shell portion and a first transition shell portion connected to the first top shell portion, and the first heat dissipation hole is provided on at least the first top shell portion.

3. The battery box with good heat dissipation performance according to claim 1, characterized in that: The inner convex shell portion extends in a straight line, and a plurality of first heat dissipation holes are arranged on each of the inner convex shell portions. The first heat dissipation holes are arranged in sequence along the length direction of the inner convex shell, and the first heat dissipation holes are all long strip holes.

4. The battery box with good heat dissipation performance according to claim 1, characterized in that: The box shell has: Bottom shell; Two first side shells, the two first side shells are respectively arranged on both sides of the bottom shell along the width direction; Two second side shells, the two second side shells are respectively arranged on both sides of the bottom shell along the length direction, and the second side shells are respectively connected to the two first side shells; The inner convex shell portion is provided on at least the bottom shell and the first side shell, and the inner convex shell portions on the bottom shell or the first side shell are parallel.

5. The battery box with good heat dissipation performance according to claim 4, characterized in that: It comprises a plurality of partitions, each of which is disposed in the cavity and is parallel to the first side shell; Each of the partitions divides the cavity into a plurality of battery cavities, and a battery pack is arranged in each of the battery cavities.

6. The battery box with good heat dissipation performance according to claim 5, characterized in that: The partition has a plurality of first-direction convex shells and a plurality of second-direction convex shells; The first-direction convex shell and the second-direction convex shell protrude toward both sides of the partition in the thickness direction, respectively, so as to contact the battery packs on both sides of the partition, respectively.

7. The battery box with good heat dissipation performance according to claim 6, characterized in that: Second heat dissipation holes are disposed on both the first-direction convex shell and the second-direction convex shell.

8. The battery box with good heat dissipation performance according to claim 7, characterized in that: A second top shell portion is disposed at the top of each of the first-direction convex shell and the second-direction convex shell. The second top shell portion is a flat shell so as to fit the battery pack.

9. The battery box with good heat dissipation performance according to claim 8, characterized in that: The second heat dissipation hole is disposed on at least the second top shell portion.

10. The battery box with good heat dissipation performance according to claim 6, characterized in that: The first-direction convex shells and the second-direction convex shells are alternately arranged in sequence along the width direction of the partition, and the first-direction convex shells and the second-direction convex shells both extend along the length direction of the partition.

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