Upper cover and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses an upper cover and a battery pack, and the upper cover is suitable for being connected with an end plate group and comprises a cover plate and a sliding plate. The cover plate is suitable for being connected with the open end of the end plate set, a first through groove is formed in the top face of the cover plate, and a through hole is formed in the groove bottom of the first through groove. The sliding plate is arranged in the first through groove and can slide between a first position and a second position in the length direction of the first through groove, the sliding plate closes the through hole in the state of the first position, and the through hole is opened in the state of the second position. According to the invention, visibility and operability of positive and negative electrode installation on the battery pack can be realized.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to an upper cover and a battery pack. Background Art

[0002] As a core component of electric vehicles and energy storage systems, the technological progress of power battery packs is directly related to the performance and cost - effectiveness of the entire system. The structural design of power battery packs, especially their upper cover parts, not only needs to meet basic electrical insulation and protection requirements but also maintain high stability and reliability in complex usage and transportation environments.

[0003] In related technologies, the upper covers of power battery packs are mostly fixed in the form of PC (polycarbonate) sheets with adhesive backing. The problem of reverse connection of the positive and negative electrodes during the battery pack assembly process is a hidden danger that cannot be ignored. Once the positive and negative electrodes are connected reversely, it will not only cause the battery pack to malfunction but also may lead to serious safety accidents. Therefore, how to increase the visibility and operability of the positive and negative electrode installation in the battery pack design has become an urgent problem to be solved. Summary of the Utility Model

[0004] In view of this, this application provides an upper cover and a battery pack to solve the problem of inability to achieve the visibility and operability of the positive and negative electrode installation.

[0005] In a first aspect, this application provides an upper cover adapted to be connected to an end - plate group, including a cover plate and a sliding plate.

[0006] The cover plate is adapted to be connected to the open end of the end - plate group. A first through - groove is provided on the top surface of the cover plate, and a through - hole is provided at the bottom of the first through - groove.

[0007] The sliding plate is arranged in the first through - groove and can slide between a first position and a second position along the length direction of the first through - groove. In the state of the first position, the sliding plate closes the through - hole, and in the state of the second position, the through - hole is opened.

[0008] Advantageous Effects: The design of the upper cover realizes the visualization of the positive and negative electrode installation process of the battery pack by introducing a slidable sliding plate, effectively avoiding potential safety hazards caused by installation errors. At the same time, the sliding plate closes the through - hole in the first position, enhancing the insulation and protection performance of the battery pack; in the second position, the through - hole is opened, facilitating the connection of the positive and negative electrodes of the battery pack and improving the operation convenience.

[0009] In an optional embodiment, a second through - groove is provided on one of the inner side walls of the first through - groove, and the length direction of the second through - groove is the same as the length direction of the first through - groove. A first slider is provided on one edge of the sliding plate, and the first slider is in sliding fit with the second through - groove.

[0010] And / or, another opposite inner sidewall of the first through groove is provided with a third through groove, and the length direction of the third through groove is the same as that of the first through groove. Another opposite edge of the sliding plate is provided with a second slider, and the second slider is slidably engaged with the third through groove.

[0011] Advantageous effects: By providing the second through groove and / or the third through groove on the inner sidewall of the first through groove and slidably engaging with the first slider and / or the second slider of the sliding plate, the stability and smoothness of the sliding plate during the sliding process are ensured. This design not only improves the service life of the sliding plate but also enhances the sealing performance and improves the overall performance of the upper cover.

[0012] In an optional embodiment, there is one sliding plate, the width of the sliding plate is the same as the width of the first through groove, and the length of the sliding plate is the same as the length of the first through groove; in the state of the first position, the sliding plate completely covers the first through groove, and in the state of the second position, the sliding plate is disengaged from the first through groove.

[0013] Advantageous effects: Only providing one sliding plate can avoid the generation of splicing gaps between multiple sliding plates and ensure the sealing effect.

[0014] In an optional embodiment, there are multiple sliding plates, the widths of the multiple sliding plates are all the same as the width of the first through groove, and the sum of the lengths of the sliding plates is the same as the length of the first through groove; in the state of the first position, the multiple sliding plates are abutted against each other in sequence along the length direction of the first through groove, and in the state of the second position, the multiple sliding plates are disengaged from the first through groove.

[0015] Advantageous effects: The design of using multiple sliding plates can mutually abut and close the through hole in the first position to enhance the sealing effect; in the second position, it is disengaged from the first through groove, which is convenient for connecting the positive and negative electrodes of the battery pack. This design improves the flexibility and adaptability of the upper cover and can meet the access requirements of the positive and negative electrodes of battery packs with different specifications and quantities.

[0016] In an optional embodiment, there are two sliding plates, and the two sliding plates have the same length.

[0017] Advantageous effects: Setting two sliding plates can achieve rapid closing and rapid opening of the first through groove.

[0018] In an optional embodiment, the end plate group of the cover plate is fixedly connected by fasteners.

[0019] Beneficial effects: A plurality of fixing holes are arranged at intervals on the edge of the top surface of the cover plate and are connected to the end plate group through fasteners, realizing the firm connection between the upper cover and the end plate group. This design not only improves the overall structural strength of the battery pack, but also avoids the risk of detachment caused by the decline of adhesive performance, ensuring the stability and reliability of the battery pack during long-term use.

[0020] In an alternative embodiment, a plurality of the first through grooves are provided, and the plurality of the first through grooves are arranged at intervals along the width direction of the cover plate.

[0021] Beneficial effects: By arranging a plurality of the first through grooves at intervals, it is possible to adapt to the positive and negative electrode access requirements of different layouts and quantities, improving the versatility and flexibility of the upper cover. At the same time, this design also helps to optimize the space utilization and heat dissipation performance inside the battery pack.

[0022] In a second aspect, the present application also provides a battery pack, including an upper cover, an end plate group, a bottom plate and a steel belt.

[0023] The end plate group is connected to the cover plate of the upper cover.

[0024] The bottom plate is connected to the end plate group.

[0025] The steel belt is sleeved on the outer peripheral surface of the end plate group, and the steel belt is attached to the outer peripheral surface of the end plate group.

[0026] Beneficial effects: The battery pack is composed of components such as an upper cover, an end plate group, a bottom plate and a steel belt, realizing comprehensive protection for the battery cell group.

[0027] In an alternative embodiment, the projected area of the cover plate along the normal direction of the cover plate is larger than the projected area of the steel belt along the normal direction of the cover plate.

[0028] Beneficial effects: The projected area of the cover plate along its normal direction is larger than the projected area of the steel belt along the same direction, which can limit the steel belt and prevent the steel belt from falling off.

[0029] In an alternative embodiment, it further includes a battery cell group, and a positive electrode post and a negative electrode post are arranged on the battery cell group, and the positive electrode post and the negative electrode post correspond to the positions of the first through grooves of the cover plate.

[0030] Beneficial effects: The design that the positive electrode post and the negative electrode post on the battery cell group correspond to the positions of the first through grooves of the upper cover ensures that the positive and negative electrodes of the battery pack can be accurately and conveniently connected to the battery pack. This corresponding relationship not only improves the assembly efficiency, but also reduces the failure rate caused by incorrect connection or reverse connection, enhancing the safety and reliability of the battery pack. Description of the Drawings

[0031] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 Structural schematic diagram of an upper cover according to an embodiment of the present application;

[0033] Figure 2 Top view of the cover plate in an embodiment of the present application;

[0034] Figure 3 Side view of the cover plate in an embodiment of the present application;

[0035] Figure 4 Structural schematic diagram of a battery pack according to an embodiment of the present application.

[0036] Explanation of reference numerals:

[0037] 1. End plate group; 2. Cover plate; 3. First through groove; 4. Slide plate; 5. First slider; 6. Second slider; 7. Fixed hole; 8. Steel strip. Specific embodiments

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0039] The following combines Figures 1 to 4 , to describe the embodiments of the present application.

[0040] According to an embodiment of the present application, on the one hand, an upper cover is provided, which is suitable for connecting to the end plate group 1 and includes a cover plate 2 and a slide plate 4.

[0041] The cover plate 2 is suitable for connecting to the open end of the end plate group 1 and can seal the end plate group 1. A first through groove 3 is provided on the top surface of the cover plate 2, and a through hole is provided at the bottom of the first through groove 3. The slide plate 4 is arranged in the first through groove 3 and can slide between a first position and a second position along the length direction of the first through groove 3. In the state of the first position, the slide plate 4 closes the through hole, and in the state of the second position, the through hole is opened.

[0042] Optionally, the slide plate 4 can slide bidirectionally along the length direction of the first through groove 3.

[0043] In this embodiment, the design of the upper cover realizes the visualization of the installation process of the positive and negative electrodes of the battery pack by introducing a slidable skateboard 4, effectively avoiding potential safety hazards caused by incorrect installation. At the same time, the skateboard 4 closes the through hole at the first position, enhancing the insulation protection performance of the battery pack; and opens the through hole at the second position, facilitating the visual access of the positive and negative electrodes of the battery pack and improving the operation convenience.

[0044] It can be understood that the size of the through hole is less than or equal to the size of the first through groove 3.

[0045] It should be noted that for the structure of the through hole, it can be designed according to actual usage needs, that is, the through hole can expose the positive and negative electrodes of the battery pack for easy installation. For example, the through hole can be set as a rectangular structure, a circular structure, an oval structure, etc., and the present application does not make specific limitations. Further, for example, when the through hole is set as a rectangular structure, its length is less than or equal to the length of the first through groove 3, and its width is less than or equal to the width of the first through groove 3; when the through hole is set as a circular structure, its diameter is less than or equal to the width of the first through groove 3; when the through hole is set as an oval structure, its major axis is less than or equal to the length of the first through groove 3, and its minor axis is less than or equal to the width of the first through groove 3.

[0046] In some embodiments, a second through groove is provided on one inner side wall of the first through groove 3, and the length direction of the second through groove is the same as the length direction of the first through groove 3. A first slider 5 is provided on one edge of the skateboard 4, and the first slider 5 is slidably engaged with the second through groove;

[0047] Optionally, a third through groove may also be provided on the other opposite inner side wall of the first through groove 3, and the length direction of the third through groove is the same as the length direction of the first through groove 3. A second slider 6 is provided on the other opposite edge of the skateboard 4, and the second slider 6 is slidably engaged with the third through groove.

[0048] Optionally, the second through groove and the third through groove may be on the same horizontal plane.

[0049] In this embodiment, by providing a second through groove and / or a third through groove on the two inner side walls of the first through groove 3 extending along the length direction and slidably engaging with the first slider 5 and / or the second slider 6 of the skateboard 4, the stability and smoothness of the skateboard 4 during the sliding process are ensured. This design not only improves the service life of the skateboard 4 but also improves the sealing performance and enhances the overall performance of the upper cover.

[0050] In some embodiments, one skateboard 4 is provided (not illustrated in the drawings). The width of the skateboard 4 is the same as the width of the first through groove 3, and the length of the skateboard 4 is the same as the length of the first through groove 3; in the state of the first position, the skateboard 4 completely covers the first through groove 3, and in the state of the second position, the skateboard 4 is disengaged from the first through groove 3.

[0051] In this embodiment, only one sliding plate 4 is provided, which can avoid the generation of splicing gaps between multiple sliding plates 4 and ensure the sealing effect.

[0052] In some embodiments, multiple sliding plates 4 are provided. The widths of the multiple sliding plates 4 are the same as the width of the first through groove 3, and the sum of the lengths of the sliding plates 4 is the same as the length of the first through groove 3; in the state of the first position, the multiple sliding plates 4 are abutted against each other in sequence along the length direction of the first through groove 3, and in the state of the second position, the multiple sliding plates 4 are separated from the first through groove 3.

[0053] Optionally, two sliding plates 4 can be provided (as Figure 1 shown), and the two sliding plates 4 can slide out or into the first through groove 3 from both ends respectively. It can achieve the rapid closing and opening of the first through groove 3.

[0054] Optionally, the lengths of the two sliding plates 4 are the same, both being half of the length of the first through groove 3.

[0055] In this embodiment, the design of using multiple sliding plates 4 can make them abut against each other to close the through hole in the first position, enhancing the sealing effect; and in the second position, they are separated from the first through groove 3, facilitating the visual access to the positive and negative electrodes of the battery pack. This design improves the flexibility and adaptability of the upper cover.

[0056] In some embodiments, the cover plate 2 and the end plate group 1 are fixedly connected by fasteners.

[0057] In some embodiments, a plurality of fixing holes 7 are spaced apart on the top surface edge of the cover plate 2, and corresponding connecting holes are spaced apart on the top surface edge of the end plate group 1. The fasteners can be inserted into the fixing holes 7 and the connecting holes.

[0058] In this embodiment, a plurality of fixing holes 7 are spaced apart on the top surface edge of the cover plate 2, and corresponding connecting holes are spaced apart on the top surface edge of the end plate group 1. By inserting the fasteners into the fixing holes 7 and the connecting holes, the connection and fixation between the cover plate 2 and the end plate group 1 are realized, achieving the stable connection between the upper cover and the end plate group 1. This design not only improves the overall structural strength of the battery pack but also avoids the risk of detachment caused by the decline of adhesive performance, ensuring the stability and reliability of the battery pack during long-term use.

[0059] In some embodiments, the fasteners can be bolts or screws.

[0060] In this embodiment, the fasteners are specifically selected as bolts, and the fastening characteristics of the bolts are used to ensure the tight connection between the upper cover and the end plate group 1. Bolt connection is not only stable and reliable but also convenient for disassembly and repair, reducing the maintenance cost and time.

[0061] In some embodiments, a plurality of first through slots 3 are provided, and the plurality of first through slots 3 are spaced along the width direction of the cover plate 2.

[0062] Optionally, the plurality of first through slots 3 may be arranged in parallel at equal intervals along the width direction of the cover plate 2.

[0063] In this embodiment, by providing a plurality of first through slots 3 spaced along the width direction of the cover plate 2, the visualization access requirements of the positive and negative electrodes of battery packs with different layouts and quantities can be met, improving the versatility and flexibility of the upper cover. At the same time, this design also helps to optimize the space utilization and heat dissipation performance inside the battery pack.

[0064] According to an embodiment of the present application, on the other hand, a battery pack is further provided, which includes an upper cover, an end plate group 1, a bottom plate, and a steel strip 8.

[0065] The end plate group 1 is connected to the cover plate 2 of the upper cover.

[0066] The bottom plate is connected to the end plate group 1.

[0067] The steel strip 8 is sleeved on the outer peripheral surface of the end plate group 1, and the steel strip 8 is in contact with the outer peripheral surface of the end plate group 1.

[0068] In this embodiment, the battery pack is composed of components such as an upper cover, an end plate group 1, a bottom plate, and a steel strip 8, achieving comprehensive protection of the battery pack.

[0069] In some embodiments, the projected area of the cover plate 2 along the normal direction of the cover plate 2 is larger than the projected area of the steel strip 8 along the normal direction of the cover plate 2.

[0070] In this embodiment, the projected area of the cover plate 2 along its normal direction is larger than the projected area of the steel strip 8 along the same direction, that is, the outer peripheral dimension of the cover plate 2 is larger than the outer peripheral dimension of the steel strip 8. This design can make the cover plate 2 improve the safety and reliability of the positive and negative electrode installation while achieving the limiting effect on the steel strip 8, avoiding the steel strip 8 from falling off, and enhancing the overall structural strength of the battery pack.

[0071] In some embodiments, the end plate group 1 includes a plurality of end plates, and the plurality of end plates are connected to the bottom plate to form a surrounding frame for the battery cell group. The battery cell group is placed in the above-mentioned surrounding frame, and the cover plate 2 is covered on the open end of the end plate group 1 to seal the battery cell group. This connection method simplifies the structural design of the battery pack, improves the assembly efficiency, and ensures the alignment and stability of the cover plate 2 and the end plate group 1 during the connection process.

[0072] In some embodiments, a battery cell group is further included, and a positive electrode post and a negative electrode post are provided on the battery cell group, and the positive electrode post and the negative electrode post correspond to the positions of the first through slots 3 of the cover plate 2.

[0073] In this embodiment, the design of the positive electrode post and the negative electrode post on the battery cell group corresponding to the position of the first through groove 3 of the upper cover not only facilitates the visual access of the positive and negative electrodes of the battery pack, improves the operation convenience, but also enhances the safety and reliability of the battery pack.

[0074] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An upper cover, characterized in that, Suitable for connection with the end plate group (1), including: A cover plate (2), suitable for connection with the open end of the end plate group (1). A first through groove (3) is provided on the top surface of the cover plate (2), and a through hole is provided at the bottom of the first through groove (3). A sliding plate (4), arranged in the first through groove (3) and capable of sliding between a first position and a second position along the length direction of the first through groove (3). In the state of the first position, the sliding plate (4) closes the through hole, and in the state of the second position, the through hole is opened.

2. The upper cover according to claim 1, wherein: A second through groove is provided on one inner side wall of the first through groove (3), and the length direction of the second through groove is the same as the length direction of the first through groove (3). A first slider (5) is provided on one edge of the sliding plate (4), and the first slider (5) is in sliding fit with the second through groove; And / or, a third through groove is provided on the other opposite inner side wall of the first through groove (3), and the length direction of the third through groove is the same as the length direction of the first through groove (3). A second slider (6) is provided on the other opposite edge of the sliding plate (4), and the second slider (6) is in sliding fit with the third through groove.

3. The upper cover according to claim 1 or 2, wherein: There is one sliding plate (4), the width of the sliding plate (4) is the same as the width of the first through groove (3), and the length of the sliding plate (4) is the same as the length of the first through groove (3); in the state of the first position, the sliding plate (4) completely covers the first through groove (3), and in the state of the second position, the sliding plate (4) is separated from the first through groove (3).

4. The upper cover according to claim 1 or 2, wherein: There are multiple sliding plates (4), the widths of the multiple sliding plates (4) are all the same as the width of the first through groove (3), and the sum of the lengths of the sliding plates (4) is the same as the length of the first through groove (3); in the state of the first position, the multiple sliding plates (4) are abutted against each other in sequence along the length direction of the first through groove (3), and in the state of the second position, the multiple sliding plates (4) are separated from the first through groove (3).

5. The upper cover according to claim 4, wherein: There are two sliding plates (4), and the lengths of the two sliding plates (4) are the same.

6. The upper cover according to claim 1, wherein: The cover plate (2) and the end plate group (1) are fixedly connected by fasteners.

7. The upper cover according to claim 1, wherein: There are multiple first through grooves (3), and the multiple first through grooves (3) are arranged at intervals along the width direction of the cover plate (2).

8. A battery pack, characterized in that, Including: The upper cover according to any one of claims 1 to 7; An end plate group (1), connected to the cover plate (2) of the upper cover; A bottom plate, connected to the end plate group (1); A steel strip (8), sleeved on the outer peripheral surface of the end plate group (1), and the steel strip (8) is in fit with the outer peripheral surface of the end plate group (1).

9. The battery pack according to claim 8, characterized in that: The projected area of the cover plate (2) in the normal direction of the cover plate (2) is larger than the projected area of the steel strip (8) in the normal direction of the cover plate (2).

10. The battery pack according to claim 8, characterized in that, It further includes: A battery cell group, on which a positive electrode post and a negative electrode post are provided, and the positive electrode post and the negative electrode post correspond to the position of the first through groove (3) of the cover plate (2).

Images