Side plate replacement tool and battery pack

Abstract

The utility model relates to the technical field of batteries, and provides a side plate replacement tool and a battery pack. The side plate replacement tool is used for a battery pack, the battery pack comprises a tray, two end plates and a battery cell, the tray contains the end plates and the battery cell, and the two end plates are located on the two opposite sides of the battery cell respectively; the side plate replacement tool comprises a body and a mounting seat, and a pre-tightening space for accommodating the battery cell is defined by the body and the end plate; the number of the installation seats is two, and the installation seats are arranged at the two ends of the body respectively and detachably connected with the end plates. According to the side plate replacement tool disclosed by the utility model, the pre-tightening space for accommodating the battery cell is defined by the body and the end plates of the side plate replacement tool and is used for applying pressure to the battery cell, and the mounting seats positioned at the two ends of the body are detachably connected with the end plates, so that the battery cell can be tightly pressed when the battery cell is put into a tray, and the side plate replacement tool is detached after the battery cell is put into the tray. Therefore, a side plate can be omitted in the battery pack, and the overall weight of the battery pack is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a side plate replacement tooling and a battery pack. Background Technology

[0002] Battery packs in related technologies typically use end plates and side plates as preload generators, and these end plates and side plates are usually made of metal. However, this results in a significant weight for the end plates and side plates, contributing to the overall weight of the battery pack. Therefore, reducing the overall weight of the battery pack has become a pressing issue. Utility Model Content

[0003] This invention provides a side plate replacement tooling and a battery pack to solve the problem of the large overall weight of the battery pack in related technologies.

[0004] This utility model is implemented as follows: it provides a side plate replacement tooling and a battery pack. The side plate replacement tooling is used in a battery pack, which includes a tray, end plates, and battery cells. The tray houses the end plates and the battery cells. There are two end plates, located on opposite sides of the battery cells. The side plate replacement tooling includes a body and mounting bases. The body and the end plates form a pre-tightening space for housing the battery cells. There are two mounting bases, located at both ends of the body and detachably connected to the end plates.

[0005] Furthermore, the side plate replacement tooling also includes a connecting part and a supporting part, wherein the connecting part connects the supporting part to the body, and the supporting part abuts against the top surface of the end plate.

[0006] Furthermore, the support portion has a first opening, the end plate has a second opening, and the side plate replacement tooling includes a fastener that passes through the first opening and the second opening.

[0007] Furthermore, the first opening and the second opening are threaded holes, and the fastener includes a bolt.

[0008] Furthermore, the mounting base includes a pre-tightening portion that intersects the extension direction of the body and abuts against two adjacent sides of the battery cell.

[0009] Furthermore, the area of ​​the pre-tightening portion is 1800 mm². 2 Up to 2700mm 2 .

[0010] Furthermore, the height difference between the body and the battery cell is 0 to 5 mm.

[0011] Furthermore, the thickness of the body is 5mm to 10mm.

[0012] Furthermore, the side plate replacement tooling includes metal, alloy, or synthetic polymer material.

[0013] This utility model embodiment also provides a battery pack, including a tray, end plates, and battery cells. The tray houses the end plates and the battery cells. There are two end plates, which are located on opposite sides of the battery cells. A gap is formed between the battery cells and the side frame of the tray. The gap corresponds to the side plate replacement tooling described above.

[0014] The side plate replacement fixture of this utility model has a pre-tightening space formed by the body and end plate of the fixture to accommodate the battery cell, which applies pressure to the battery cell. Furthermore, the mounting seats at both ends of the body are detachably connected to the end plate. Therefore, the battery cell can be pressed firmly when placed into the tray, and the side plate replacement fixture can be removed after the battery cell is placed into the tray. This eliminates the need for a side plate in the battery pack, thereby reducing the overall weight of the battery pack. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a side plate replacement tooling provided in one embodiment of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of a side plate replacement tooling provided in one embodiment of the present invention from another angle;

[0018] Figure 3 This is a schematic diagram of the structure of a battery pack provided in one embodiment of the present invention;

[0019] Figure 4 yes Figure 3 The schematic diagram of the battery pack with a side plate as a replacement tooling is described in the figure.

[0020] Figure 5 yes Figure 3 A schematic diagram of the end plate structure in the battery pack described above;

[0021] Figure 6 yes Figure 3 A schematic diagram of the structure of the insulating sheet in the battery pack described herein.

[0022] Explanation of main component symbols: 100, battery pack; 10, side plate replacement tooling; 20, tray; 30, end plate; 40, battery cell; 50, insulating sheet; 60, gap; 11, body; 12, mounting base; 31, second opening; 51, insulating body; 52, protrusion; 121, connecting part; 122, support part; 123, first opening; 124, fastener; 125, pre-tightening part. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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 according to the specific circumstances.

[0027] 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.

[0028] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0029] Please see Figures 1 to 5 The side plate replacement tooling 10 in this embodiment of the present invention can be applied to a battery pack 100. The battery pack 100 includes a tray 20, end plates 30, and battery cells 40. The tray 20 houses the end plates 30 and battery cells 40. There are two end plates 30, located on opposite sides of the battery cells 40. The side plate replacement tooling 10 includes a body 11 and mounting bases 12. The body 11 and the end plates 30 form a pre-tightening space for housing the battery cells 40, pre-tightening the battery cells 40 to resist their expansion force. There are two mounting bases 12, located at both ends of the body 11, and detachably connected to the end plates 30.

[0030] Thus, since the body 11 of the side plate replacement tooling 10 and the end plate 30 form a pre-tightening space for accommodating the battery cell 40, and the mounting seats 12 located at both ends of the body 11 are detachably connected to the end plate 30, the battery cell 40 can be pressed when placed into the tray 20, and the side plate replacement tooling 10 can be removed after the battery cell 40 is placed into the tray 20. In this way, the side plate can be eliminated from the battery pack 100, thereby reducing the overall weight of the battery pack 100.

[0031] Specifically, during the manufacturing process of the battery pack 100, the battery cells 40 expand. Therefore, to ensure that the length of each battery cell 40 in the battery pack 100 remains consistent, a side plate replacement fixture 10 and an end plate 30 form a pre-tightening space to accommodate the battery cells 40, thereby pre-tightening and pressurizing the battery cells 40 to resist their expansion force. For each pre-tightening space, the number of side plate replacement fixtures 10 and end plates 30 can be set to two. The extending direction of the side plate replacement fixture 10 intersects the extending direction of the end plate 30. Specifically, the extending direction of the side plate replacement fixture 10 corresponds to one opposite side of the battery cell 40, and the extending direction of the end plate 30 corresponds to the other opposite side of the battery cell 40. Preferably, the extending directions of the side plate replacement fixture 10 and the end plate 30 can be set to be perpendicular to each other.

[0032] Please see Figure 1 and Figure 2 The side plate replacement tooling 10 is generally elongated. The main body 11 of the side plate replacement tooling 10 is its core, and mounting seats 12 are provided at both ends of the main body 11. The extending direction of the mounting seats 12 intersects the extending direction of the main body 11. Preferably, the extending direction of the mounting seats 12 can be set perpendicular to the extending direction of the main body 11. The side plate replacement tooling 10 has a U-shaped structure. Thus, the mounting seats 12 at both ends of the main body 11 extend in a direction perpendicular to the main body 11, facilitating docking with the end plate 30 and improving the stability of the pre-tightening space.

[0033] The mounting base 12 is specifically stacked on the end plate 30. The mounting base 12 abuts against the top surface of the end plate 30, which can support the side plate replacement tooling 10. At the same time, the side plate replacement tooling 10 can also be detachably connected to the end plate 30 through the mounting base 12.

[0034] Alternatively, the body 11 and the mounting base 12 can be integrally formed. In this way, the side plate, instead of the tooling 10, has better overall rigidity and a simpler structure, thus avoiding loosening problems caused by unnecessary connecting links.

[0035] Optionally, the body 11 and the mounting base 12 can be separated. In this way, the mounting base 12 can be flexibly replaced or the installation position adjusted for different sized battery cells 40, making the side plate replacement tooling 10 more adaptable.

[0036] Furthermore, in one possible implementation, the side plate replacement tooling 10 comprises a metal, alloy, or synthetic polymer material. Specifically, the side plate replacement tooling 10 can be made of any one or more of metals, alloys, or synthetic polymers, which can fully utilize the advantages of different materials to meet the needs of different application scenarios.

[0037] The metal side plate replacement fixture 10 has a strong load-bearing capacity and can effectively resist the expansion force of the battery cell 40, maintaining the stability of the side plate replacement fixture 10. For example, the side plate replacement fixture 10 can be made of copper or silver.

[0038] Alloy-material side plate replacement tooling 10 offers better overall performance, typically combining the strength of metal with the advantages of other materials (such as corrosion resistance and wear resistance). For example, side plate replacement tooling 10 can be made of aluminum alloy and magnesium alloy or steel.

[0039] The low density of synthetic polymer materials allows for the weight reduction of the side plate replacement tooling 10, thus achieving a lighter design. For example, the side plate replacement tooling 10 can be made of polycarbonate, polyamide, or glass fiber reinforced plastic.

[0040] Please see Figures 1 to 5 Furthermore, in one possible embodiment, the mounting base 12 further includes a connecting portion 121 and a supporting portion 122, the connecting portion 121 connecting the supporting portion 122 to the body 11, and the supporting portion 122 abutting against the top surface of the end plate 30; the mounting base 12 includes a connecting portion 121 and a supporting portion 122, the connecting portion 121 connecting the supporting portion 122 to the body 11, and the supporting portion 122 abutting against the top surface of the end plate 30.

[0041] Thus, the mounting base 12 can be connected to the body 11 via the connecting part 121 to form an overall structure of the side plate replacement tooling 10. The support part 122 directly contacts the top surface of the end plate 30, providing overall support for the side plate replacement tooling 10. At the same time, the direct contact between the support part 122 and the end plate 30 can effectively disperse the expansion force of the battery cell 40, avoiding deformation of the end plate 30 caused by excessive local stress.

[0042] Optionally, the support portion 122 can be configured to fully contact the top surface of the end plate 30. This allows the support portion 122 to be subjected to uniform force, providing comprehensive support for the side plate replacement tooling 10.

[0043] Optionally, multiple protrusions (not shown) can be provided on the bottom surface of the support portion 122 to form multi-point contact with the end plate 30. The protrusions of the support portion 122 support the end plate 30 to distribute the force to multiple contact points, effectively avoiding the problem of local stress concentration, thereby reducing the risk of deformation or damage to the end plate 30.

[0044] Please see Figures 1 to 5Furthermore, in one possible embodiment, the support portion 122 has a first opening 123, the end plate 30 has a second opening 31, and the side plate replacement fixture 10 includes a fixing member 124, which passes through the first opening 123 and the second opening 31. Thus, the support portion 122 and the end plate 30 are respectively provided with openings, and the first opening 123 and the second opening 31 are connected by the fixing member 124, thereby enhancing the stability of the side plate replacement fixture 10 and the ease of installation and disassembly. Simultaneously, the docking of the first opening 123 and the second opening 31 ensures precise positioning of the support portion 122 and the end plate 30, avoiding misalignment or unstable connections.

[0045] Specifically, a first opening 123 is provided on the support portion 122, allowing the support portion 122 to mate with the second opening 31 of the end plate 30 through the first opening 123, forming a reliable connection. At the same time, a second opening 31 is also provided on the end plate 30, corresponding to the first opening 123 of the support portion 122, for receiving the fixing member 124, so that the support portion 122 can be fixed on the end plate 30.

[0046] Specifically, in the extending direction of the body 11, the distance between the first openings 123 of the two end plates 30 is the same as the distance between the second openings 31 of the two mounting seats 12. In this way, the support 122 can be precisely connected to the end plates 30, avoiding assembly difficulties or unstable connections caused by dimensional deviations.

[0047] Furthermore, in one possible implementation, the first opening 123 and the second opening 31 are threaded holes, and the fastener 124 includes a bolt. This allows the support 122 to be securely connected to the end plate 30, ensuring that the side plate replacement fixture 10 provides stable support throughout the battery pack 100 for effective pre-tightening of the battery cell 40. Simultaneously, the threaded holes can tightly engage with the bolts, guaranteeing a stable connection between the end plate 30 and the side plate replacement fixture 10.

[0048] Furthermore, in one possible embodiment, the mounting base 12 includes a pre-tightening portion 125, which intersects the extending direction of the body 11 and abuts against two adjacent sides of the battery cell 40. Thus, the pre-tightening portion 125 can also apply a certain pressure to the battery cell 40, thereby providing a pre-tightening force and further increasing the pre-tightening pressure on the battery cell 40 to resist the expansion force of the battery cell 40. Simultaneously, the intersecting extension direction of the pre-tightening portion 125 and the body 11 allows the pre-tightening portion 125 and the body 11 to pre-tighten and pressurize the battery cell 40 from different directions, further improving the pre-tightening and pressing effect on the battery cell 40. Specifically, both the connecting portion 121 and the pre-tightening portion 125 are connected to the support portion 122. Both the connecting portion 121 and the pre-tightening portion 125 are integrally formed with the support portion 122.

[0049] Furthermore, in one possible implementation, the area of ​​the preload 125 is 1800 mm². 2 Up to 2700mm 2 Thus, the pre-tensioning portion 125 has an appropriate area, capable of providing sufficient pressure to the battery cell 40 without excessive space occupation or cost waste. If the area of ​​the pre-tensioning portion 125 is too small, it will not be able to provide sufficient pressure to the battery cell 40. If the area of ​​the pre-tensioning portion 125 is too large, it will result in excessive space occupation and cost waste. For example, the area of ​​the pre-tensioning portion 125 can be set to 1800 mm². 2 2250mm 2 2397mm 2 2700mm 2 .

[0050] Preferably, the area of ​​the pre-tightening portion 125 can be set to 2397 mm². 2 Up to 2700mm 2 In this way, the preload section 125 can maximize the pressure on the battery cell 40 while avoiding excessive space occupation or cost waste.

[0051] Furthermore, in one possible implementation, the height difference between the body 11 and the battery cell 40 is 0 to 5 mm. This allows the body 11 and the battery cell 40 to be substantially flush in height, resulting in a more compact overall structure of the battery pack 100. Simultaneously, the battery cell 40 can be maximally fixed and supported within a limited space, thereby improving the structural stability of the battery pack 100. Preferably, the height difference between the body 11 and the battery cell 40 can be set to 0, meaning the upper surface of the body 11 and the upper surface of the battery cell 40 are on the same horizontal plane.

[0052] Furthermore, in one possible implementation, the thickness of the body 11 is 5mm to 10mm. This provides sufficient rigidity to ensure that the body 11 can effectively withstand the expansion force of the battery cell 40 and external pressure within the battery pack 100, without excessively occupying space or wasting cost. If the body 11 is too thin, it will be unable to effectively withstand the expansion force of the battery cell 40 and external pressure; if the body 11 is too thick, it will result in wasted cost and excessive space occupation.

[0053] Preferably, the thickness of the body 11 can be set to 8mm to 10mm. This avoids excessive space occupation or cost waste while maximizing the ability to withstand the expansion force of the battery cell 40 and external pressure. For example, the thickness of the body 11 can be set to 8mm, 9mm or 10mm.

[0054] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6This utility model embodiment also provides a battery pack 100, which includes a tray 20, an end plate 30, a battery cell 40, and an insulating sheet 50. The tray 20 houses the end plate 30 and the insulating sheet 50, which together form an accommodating space for the battery cell 40. A gap 60 is formed between the insulating sheet 50 and the side frame of the tray 20, and the gap 60 corresponds to the aforementioned side plate replacement fixture 10.

[0055] In this way, after the battery cell 40 is pre-tightened, the side plate can be removed to replace the tooling 10, thus eliminating the need for the side plate in the battery pack 100 and reducing the overall weight of the battery pack 100.

[0056] It should be noted that "a gap 60 is formed between the insulating sheet 50 and the side frame of the tray 20, and the gap 60 corresponds to the aforementioned side plate replacement fixture 10." This means that the gap 60 between the insulating sheet 50 and the side frame of the tray 20 is sufficient to accommodate the side plate replacement fixture 10, that is, the volume of the gap 60 is greater than or equal to the volume of the side plate replacement fixture 10.

[0057] Specifically, the battery pack 100 includes an insulating sheet 50, which is positioned between the gap 60 and the battery cell 40. The insulating sheet 50 insulates the battery cell 40, providing lateral insulation protection for the battery cell 40. Simultaneously, the insulating sheet 50 can be glued to the top surface of the battery cell 40 to secure its position.

[0058] Furthermore, there are two insulating sheets 50. The cross-section of the insulating sheet 50 can be L-shaped. The insulating sheet 50 includes an insulating body 51 and a protrusion 52. The insulating body 51 abuts against the side of the battery cell 40. The insulating body 51 completely covers the side of the battery cell 40 to achieve insulation. Alternatively, the insulating body 51 can be a flat sheet, directly bonded to the side of the battery cell 40 by adhesive.

[0059] The protrusion 52 is disposed on the insulating body 51 and abuts against the top of the battery cell 40. The protrusion 52 can ensure the positioning of the battery cell 40 by contacting the top of the battery cell 40 and effectively prevent the battery cell 40 from shifting.

[0060] Regarding the specific usage of the battery pack 100: When the battery cell 40 is placed into the tray 20, the battery cell 40 is pre-tightened and pressurized using the side plate replacement fixture 10 in conjunction with the end plate 30, and the insulating sheet 50 is bonded between the side plate replacement fixture 10 and the battery cell 40. After the battery cell 40 is placed into the tray 20, the side plate replacement fixture 10 can be disassembled and removed, leaving only the insulating sheet 50 inside the tray 20. This achieves the effect of reducing the overall weight of the battery pack 100. The side plate replacement fixture 10 can be reused.

[0061] In the description of this specification, the references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Furthermore, the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A side plate replacement tooling, characterized in that, It is used in a battery pack, which includes a tray, end plates, and battery cells. The tray houses the end plates and the battery cells. There are two end plates, which are located on opposite sides of the battery cells. The side plate replacement tooling includes a body and a mounting base. The body and the end plate form a pre-tightening space for accommodating the battery cell. There are two mounting bases, which are respectively located at both ends of the body and are detachably connected to the end plate.

2. The side plate replacement tooling according to claim 1, characterized in that, The side plate replacement tooling also includes a connecting part and a supporting part, wherein the connecting part connects the supporting part to the body, and the supporting part abuts against the top surface of the end plate.

3. The side plate replacement tooling according to claim 2, characterized in that, The support portion has a first opening, the end plate has a second opening, and the side plate replacement fixture includes a fastener that passes through the first opening and the second opening.

4. The side plate replacement tooling according to claim 3, characterized in that, The first opening and the second opening are threaded holes, and the fastener includes a bolt.

5. The side plate replacement tooling according to claim 1, characterized in that, The mounting base includes a pre-tightening portion that intersects the extension direction of the body and abuts against two adjacent sides of the battery cell.

6. The side plate replacement tooling according to claim 5, characterized in that, The area of ​​the pre-tightening part is 1800 mm². 2 Up to 2700mm 2 .

7. The side plate replacement tooling according to claim 1, characterized in that, The height difference between the body and the battery cell is 0-5mm.

8. The side plate replacement tooling according to claim 1, characterized in that, The thickness of the body is 5mm to 10mm.

9. The side plate replacement tooling according to claim 1, characterized in that, The side plate replacement tooling includes metal, alloy, or synthetic polymer materials.

10. A battery pack, characterized in that, The battery pack includes a tray, an end plate, a battery cell, and an insulating sheet; the tray houses the end plate and the insulating sheet, which together form an accommodating space for housing the battery cell, and a gap is formed between the insulating sheet and the side frame of the tray, the gap corresponding to the side plate replacement tooling as described in any one of claims 1 to 9.

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