Battery box and battery pack

Abstract

The utility model relates to the technical field of energy storage, and specifically provides a battery box and battery pack, and aims at solving the problems of high replacement cost and inconvenient operation and maintenance when the existing energy storage battery pack integrated heat dissipation structure is damaged. Therefore, the battery box of the utility model comprises a box body and a heat dissipation plate, the size of the heat dissipation plate is smaller than the size of the box body along a first direction, and the box body is provided with two insertion slots at intervals along the first direction, the insertion slots extend along a second direction, the first direction is perpendicular to the second direction, and the heat dissipation plate can be inserted into the insertion slot along the second direction. Through the split design of the heat dissipation plate and the box body, the heat dissipation plate can be easily inserted into or pulled out of the box body through the insertion slot, so that the installation, disassembly and replacement of the heat dissipation plate are facilitated, and the operation and maintenance efficiency and convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, specifically providing a battery box and battery pack. Background Technology

[0002] With the rapid development of energy storage technology, the performance and reliability of energy storage battery packs, as core energy storage units, are of paramount importance. Among these, the design of the heat dissipation system directly affects the battery's lifespan, safety, and overall performance.

[0003] Currently, most energy storage battery packs use an integrated structure for their heat sinks and casings, typically connected by welding or riveting. This integrated structure offered certain advantages in initial applications, such as compactness and relatively high overall strength. However, its drawbacks have become increasingly apparent in practical use.

[0004] Because the heat sink operates in a complex environment, it may leak or be damaged due to various factors. Once the heat sink malfunctions, since it's an integral part of the battery pack enclosure, maintenance personnel cannot simply replace the heat sink alone; they must replace the entire enclosure. This not only causes significant inconvenience for maintenance personnel, increasing their workload and operational difficulty, but also incurs high costs for replacing the entire enclosure, including the cost of the enclosure itself and potential labor and transportation expenses.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems of high replacement cost and inconvenient operation and maintenance when the integrated heat dissipation structure of the existing energy storage battery pack is damaged.

[0007] In a first aspect, the present invention provides a battery box, the battery box including a box body and a heat sink, the size of the heat sink being smaller than the size of the box body along a first direction, and two slots being spaced apart on the box body along the first direction, the slots extending along a second direction, the first direction being perpendicular to the second direction, the heat sink being able to be inserted into the slots along the second direction.

[0008] In the preferred embodiment of the battery box described above, the box body includes an upper cover and a lower box body, the upper cover is disposed on the lower box body, and the slot is disposed on the lower box body.

[0009] In the preferred embodiment of the above-mentioned battery box, the lower box body includes a rectangular frame and multiple crossbeams. The multiple crossbeams are disposed in the rectangular frame and connected to the rectangular frame. The slot is disposed on the rectangular frame. The heat sink is provided with multiple first connection holes. The crossbeams are provided with second connection holes corresponding one-to-one with the multiple first connection holes. The connector can pass through the first connection holes and the second connection holes in sequence to connect the crossbeams to the heat sink.

[0010] In the preferred embodiment of the battery box described above, a plurality of the crossbeams are spaced apart along the first direction within the rectangular frame, or

[0011] Multiple beams are spaced apart in the rectangular frame along the second direction, or

[0012] Multiple beams are staggered along the first and second directions in the rectangular frame to form a grid.

[0013] In the preferred embodiment of the above-mentioned battery box, the connecting member is a bolt, and both the first connecting hole and the second connecting hole are threaded holes that can be threadedly connected to the bolt. After the bolt passes through the two threaded holes in sequence, the end of the bolt is lower than the upper surface of the crossbeam.

[0014] In the preferred embodiment of the above-mentioned battery box, the heat dissipation plate includes a first plate segment and a second plate segment, the first plate segment and the second plate segment are arranged in an L-shape, the first plate segment is connected to the box body, the second plate segment is located outside the box body, and a positioning block is provided at the end of the first plate segment, and a positioning groove that cooperates with the positioning block is provided at a corresponding position inside the box body.

[0015] In the preferred embodiment of the battery box described above, a handle is provided on the second plate segment.

[0016] In the preferred embodiment of the battery box described above, along the first direction, guide rails extending along the second direction are respectively provided on both sides of the heat sink, and the two guide rails are slidably engaged with the two slots respectively.

[0017] In the preferred embodiment of the battery box described above, the inner wall of the slot is provided with a friction-reducing layer.

[0018] In a second aspect, the present invention also provides a battery pack, the battery pack including a battery module and a battery box as described in any of the above claims, wherein the battery module is installed in the battery box.

[0019] Those skilled in the art will understand that the present invention provides a battery box, comprising a box body and a heat dissipation plate. Along a first direction, the size of the heat dissipation plate is smaller than the size of the box body. Along the first direction, two slots are spaced apart on the box body, extending along a second direction perpendicular to the first direction. The heat dissipation plate can be inserted into the slots along the second direction. By adopting the above technical solution, the present invention can reduce the replacement cost when the integrated heat dissipation structure of existing energy storage battery packs is damaged and facilitate transportation and maintenance. Specifically, since the heat dissipation plate and the box body are separate designs, when the heat dissipation plate is damaged, it is only necessary to pull the damaged heat dissipation plate out of the slot and insert a new heat exchange plate into the slot, without replacing the entire battery box or energy storage battery pack, greatly reducing replacement costs. Furthermore, the heat dissipation plate can be easily inserted into or removed from the box body through the slots, allowing maintenance personnel to easily install, disassemble, and replace the heat dissipation plate. This improves the efficiency and convenience of maintenance.

[0020] Furthermore, the housing of this utility model includes an upper cover and a lower housing. The upper cover is located on the lower housing, and the slot is located on the lower housing. With this arrangement, if the heat sink needs to be replaced, the operation can be performed directly on the lower housing without disassembling the entire battery box, thus reducing the difficulty of maintenance.

[0021] Furthermore, the lower housing of this utility model includes a rectangular frame and multiple crossbeams. The crossbeams are disposed within and connected to the rectangular frame. Slots are disposed on the rectangular frame. The heat dissipation plate has multiple first connecting holes, and the crossbeams have second connecting holes corresponding to the first connecting holes one by one. Connectors can pass through the first and second connecting holes in sequence to connect the crossbeams to the heat dissipation plate. This design not only enhances the structural stability between the heat dissipation plate and the lower housing but also helps to improve the heat dissipation effect.

[0022] Furthermore, the heat dissipation plate of this utility model includes a first plate segment and a second plate segment, which are arranged in an L-shape. The first plate segment is connected to the housing, and the second plate segment is located on the outside of the housing. A positioning block is provided at the end of the first plate segment, and a positioning groove that cooperates with the positioning block is provided at a corresponding position inside the housing. This arrangement can further improve maintenance efficiency and heat dissipation effect.

[0023] Furthermore, along the first direction, guide rails extending along the second direction are respectively provided on both sides of the heat sink, and the two guide rails slide into two slots respectively. This arrangement further improves the efficiency of heat sink installation and removal. Attached Figure Description

[0024] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0025] Figure 1This is an exploded view of the battery box of this utility model;

[0026] Figure 2 This is a schematic diagram of the assembly of the lower housing and the heat sink of this utility model. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the assembly of the lower housing and the heat sink of this utility model. Figure 2 ;

[0028] Figure 4 yes Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 5 This is a schematic diagram of the heat sink of this utility model.

[0030] List of reference numerals in the attached diagram:

[0031] 1. Housing; 11. Top cover; 12. Lower housing; 121. Slot; 122. Rectangular frame; 123. Crossbeam; 1231. Second connecting hole; 13. Positioning slot;

[0032] 2. Heat sink; 21. First connecting hole; 22. First plate segment; 23. Second plate segment; 24. Positioning block; 25. Guide rail;

[0033] 3. Connectors;

[0034] 4. Battery module. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the following embodiments are described in conjunction with a battery box, the battery box provided by the present invention is also applicable to other applications requiring solutions to the problems of high replacement costs and inconvenient maintenance when an integrated heat dissipation structure is damaged.

[0036] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Based on the background art, existing integrated heat dissipation structures for energy storage battery packs suffer from high replacement costs and inconvenient maintenance when damaged. This invention provides a battery box and battery pack, aiming to effectively solve the problems of high replacement costs and inconvenient maintenance associated with the integrated heat dissipation structures of existing energy storage battery packs by using slots on the battery box body to allow the heat dissipation plate to be detachably connected to the battery box via these slots.

[0038] like Figures 1 to 3 As shown, this utility model provides a battery box, which includes a box body 1 and a heat sink 2. Along the first direction, the size of the heat sink 2 is smaller than the size of the box body 1. Along the first direction, two slots 121 are spaced apart on the box body 1. The slots 121 extend along the second direction. The first direction is perpendicular to the second direction. The heat sink 2 can be inserted into the slots 121 along the second direction.

[0039] The battery box of this utility model mainly consists of two parts: a box body 1 and a heat dissipation plate 2. Along a first direction, the size of the heat dissipation plate 2 is smaller than the size of the box body 1, thus ensuring that the heat dissipation plate 2 does not extend beyond the boundary of the box body 1 in the first direction. For example, the first direction in this utility model is along the width direction of the battery box.

[0040] On the housing 1, two slots 121 are spaced apart along a first direction. The slots 121 are for inserting a heat sink 2. The slots 121 extend along a second direction, thereby allowing the heat sink 2 to be inserted into or removed from the housing 1 along the second direction. Exemplarily, the second direction in this invention is along the length of the battery box.

[0041] The battery box provided by this utility model has a separate design for the heat dissipation plate 2 and the box body 1. When the heat dissipation plate 2 is damaged, it is only necessary to pull the damaged heat dissipation plate 2 out of the slot 121 and insert the new heat exchange plate into the slot 121. There is no need to replace the entire battery box or energy storage battery pack, which greatly reduces the replacement cost.

[0042] Furthermore, the heat sink 2 can be easily inserted into or removed from the enclosure 1 via slot 121, allowing maintenance personnel to conveniently install, disassemble, and replace the heat sink 2. This improves the efficiency and convenience of maintenance.

[0043] Preferably, the inner wall of the slot 121 is provided with a friction-reducing layer (not shown in the figure).

[0044] The anti-friction layer reduces the friction experienced by the heat sink 2 when it is inserted into the slot 121, thereby reducing resistance during installation. This allows operators to install the heat sink 2 onto the housing 1 more easily and effortlessly.

[0045] The anti-friction layer reduces direct contact and friction between the heat sink 2 and the inner wall of the slot 121, thereby reducing the risk of wear and damage caused by friction. This helps extend the service life of the heat sink 2 and the slot 121 and reduces maintenance costs.

[0046] It should be noted that the friction-reducing layer is a material or coating that can reduce the coefficient of friction, such as polytetrafluoroethylene coating, silicone coating, etc. This utility model does not limit the specific material of the friction-reducing layer.

[0047] Preferably, such as Figure 1 As shown, the box 1 includes an upper cover 11 and a lower box 12. The upper cover 11 is placed on the lower box 12, and the slot 121 is provided on the lower box 12.

[0048] The housing 1 of this utility model consists of two parts: an upper cover 11 and a lower housing 12. The upper cover 11 is placed on the lower housing 12, forming a closed or semi-closed space for accommodating the battery module 4 and other related components.

[0049] Since the upper cover 11 and the lower housing 12 are separate, the upper cover 11 can be easily opened for maintenance or repair of the components inside the battery box. Furthermore, if the heat sink 2 needs to be replaced, this can be done directly on the lower housing 12 without disassembling the entire battery box.

[0050] Furthermore, the slot 121 is directly formed on the lower housing 12, allowing the heat sink 2 to make closer contact with the lower housing 12, thereby improving heat dissipation. At the same time, this design also facilitates heat exchange between the heat sink 2 and the internal components of the battery box, further enhancing heat dissipation performance.

[0051] Preferably, such as Figures 2 to 5 As shown, the lower housing 12 includes a rectangular frame 122 and multiple crossbeams 123. The multiple crossbeams 123 are disposed in the rectangular frame 122 and connected to the rectangular frame 122. The slot 121 is disposed on the rectangular frame 122. The heat sink 2 is provided with multiple first connection holes 21. The crossbeams 123 are provided with second connection holes 1231 corresponding to the multiple first connection holes 21. The connector 3 can pass through the first connection holes 21 and the second connection holes 1231 in sequence to connect the crossbeams 123 to the heat sink 2.

[0052] The lower housing 12 consists of a rectangular frame 122 and multiple crossbeams 123. The rectangular frame 122 forms the basic outline of the lower housing 12, while the multiple crossbeams 123 are set inside the rectangular frame 122 and connected to the rectangular frame 122, which enhances the structural strength and stability of the entire lower housing 12 and can effectively protect the components inside the battery box from the effects of external impacts and vibrations.

[0053] The heat sink 2 has multiple first connecting holes 21, while the crossbeam 123 has second connecting holes 1231 corresponding to these first connecting holes 21. By using connectors 3 (such as bolts or screws) to pass through the first connecting holes 21 and the second connecting holes 1231 in sequence, the crossbeam 123 and the heat sink 2 can be securely connected together. This connection method not only enhances the structural stability between the heat sink 2 and the lower housing 12, but also helps improve heat dissipation, because the connectors 3 ensure close contact between the heat sink 2 and the crossbeam 123 (and other parts of the lower housing 12).

[0054] Preferably, multiple crossbeams 123 are spaced apart in the rectangular frame 122 along a first direction, or multiple crossbeams 123 are spaced apart in the rectangular frame 122 along a second direction, or multiple crossbeams 123 are staggered in the rectangular frame 122 along the first and second directions to form a grid.

[0055] It should be noted that regardless of whether the crossbeams 123 are arranged in a single direction or staggered, they can significantly enhance the structural strength and stability of the lower housing 12, protecting the internal components of the battery box from external impacts and vibrations.

[0056] Furthermore, this versatile 123 beam layout design allows the battery box to adapt to different usage needs and heat dissipation requirements. Designers can choose the most suitable 123 beam layout according to the actual situation to achieve optimal structural strength and heat dissipation.

[0057] Preferably, the connector 3 is a bolt, and the first connecting hole 21 and the second connecting hole 1231 are both threaded holes that can be threadedly connected to the bolt. After the bolt passes through the two threaded holes in sequence, the end of the bolt is lower than the upper surface of the crossbeam 123.

[0058] The use of bolts and threaded holes ensures a secure and reliable connection between the heat sink 2 and the crossbeam 123, preventing loosening or detachment. Furthermore, the design of the bolt end being lower than the upper surface of the crossbeam 123 after installation is likely to prevent the bolt from protruding beyond the surface of the crossbeam 123, thus avoiding interference or collision between the bolt and other components and improving the safety and reliability of the battery box.

[0059] In addition, the bolted connection is detachable, so when it is necessary to replace the heat sink 2 or perform other maintenance operations, the bolts can be easily unscrewed, the heat sink 2 can be removed, and then a new heat sink 2 can be reinstalled or other operations can be performed.

[0060] Preferably, such as Figure 2 and Figure 5As shown, the heat sink 2 includes a first plate segment 22 and a second plate segment 23. The first plate segment 22 and the second plate segment 23 are arranged in an L-shape. The first plate segment 22 is connected to the housing 1, and the second plate segment 23 is located outside the housing 1. A positioning block 24 is provided at the end of the first plate segment 22, and a positioning groove 13 that cooperates with the positioning block 24 is provided at the corresponding position inside the housing 1.

[0061] The heat sink 2 consists of a first section 22 and a second section 23, which are arranged in an L-shape. This design allows the heat sink 2 to cover both the inside and outside of the housing 1, thereby increasing the heat dissipation area, improving heat dissipation efficiency, and helping to maintain a stable temperature inside the battery box.

[0062] The use of positioning block 24 and positioning groove 13 together ensures the accuracy of heat sink 2 during installation, reducing the problem of heat sink 2 being damaged or having poor heat dissipation effect due to improper installation.

[0063] Furthermore, since the second plate segment 23 is located outside the housing 1, the operator can grasp the second plate segment 23 from outside the housing 1 to insert the first plate segment 22 into the slot 121 or pull it out of the slot 121, thereby facilitating the disassembly and reinstallation of the heat sink 2 and improving the efficiency and convenience of maintenance.

[0064] Preferably, a handle (not shown in the figure) is provided on the second plate segment 23.

[0065] The handle design makes it easier for operators to grip and move the heat sink 2 when installing or removing it, thus improving operational convenience and efficiency. By using the handle, operators can more stably control the heat sink 2, reducing safety hazards such as slippage or collisions caused by improper operation.

[0066] Preferably, such as Figure 5 As shown, along the first direction, guide rails 25 extending along the second direction are respectively provided on both sides of the heat sink 2, and the two guide rails 25 are slidably engaged with the two slots 121 respectively.

[0067] By sliding the guide rail 25 into the slot 121, the heat sink 2 can be easily installed onto or removed from the housing 1 without the need for complicated tools or cumbersome operations, thus improving the efficiency and convenience of installation and removal.

[0068] In addition, the cooperation between the guide rail 25 and the slot 121 also plays a positioning role, ensuring that the heat sink 2 can be accurately positioned in the predetermined position during installation, avoiding problems such as the heat sink 2 shifting or being damaged due to improper installation.

[0069] like Figure 1As shown, this utility model also provides a battery pack, which includes a battery module 4 and the aforementioned battery box, with the battery module 4 installed in the battery box.

[0070] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A battery box characterized by, The battery box includes a box body (1) and a heat sink (2). Along a first direction, the size of the heat sink (2) is smaller than the size of the box body (1). Along the first direction, the box body (1) is provided with two slots (121) spaced apart. The slots (121) extend along a second direction. The first direction is perpendicular to the second direction. The heat sink (2) can be inserted into the slots (121) along the second direction.

2. The battery pack of claim 1, wherein, The box (1) includes an upper cover (11) and a lower box (12), the upper cover (11) is placed on the lower box (12), and the slot (121) is located on the lower box (12).

3. The battery pack of claim 2, wherein, The lower housing (12)(1) includes a rectangular frame (122) and multiple crossbeams (123). The multiple crossbeams (123) are disposed in the rectangular frame (122) and connected to the rectangular frame (122). The slot (121) is disposed on the rectangular frame (122). The heat sink (2) is provided with multiple first connection holes (21). The crossbeams (123) are provided with second connection holes (1231) corresponding to the multiple first connection holes (21). The connector (3) can pass through the first connection holes (21) and the second connection holes (1231) in sequence to connect the crossbeams (123) to the heat sink (2).

4. The battery pack of claim 3, wherein, The plurality of beams (123) are spaced apart in the rectangular frame (122) along the first direction, or Multiple beams (123) are spaced apart in the rectangular frame (122) along the second direction, or Multiple beams (123) are staggered in the rectangular frame (122) along the first direction and the second direction to form a grid.

5. The battery pack of claim 3, wherein, The connector (3) is a bolt. The first connecting hole (21) and the second connecting hole (1231) are threaded holes that can be threadedly connected to the bolt. After the bolt passes through the two threaded holes in sequence, the end of the bolt is lower than the upper surface of the crossbeam (123).

6. The battery pack of claim 1, wherein, The heat sink (2) includes a first plate segment (22) and a second plate segment (23). The first plate segment (22) and the second plate segment (23) are arranged in an L-shape. The first plate segment (22) is connected to the housing (1). The second plate segment (23) is located outside the housing (1). A positioning block (24) is provided at the end of the first plate segment (22). A positioning groove (13) that cooperates with the positioning block (24) is provided at a corresponding position inside the housing (1).

7. The battery pack of claim 6, wherein, The second plate segment (23) is provided with a handle.

8. The battery box according to any one of claims 1 to 7, characterized in that, Along the first direction, the heat sink (2) is provided with guide rails (25) extending along the second direction on both sides, and the two guide rails (25) are slidably engaged with the two slots (121).

9. The battery box according to any one of claims 1 to 7, characterized by The inner wall of the slot (121) is provided with a friction-reducing layer.

10. A battery pack, characterized by, It includes a battery module (4) and a battery box according to any one of claims 1 to 9, wherein the battery module (4) is installed in the battery box.

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