Integrated cover plate and battery module

Abstract

The utility model relates to an integrated cover plate and a battery module, the integrated cover plate comprises a cover plate body, an output pole piece, a copper bar and a bolt, the cover plate body is provided with a mounting seat, and the mounting seat is provided with a nut; one end of the output pole piece and one end of the copper bar sequentially cover the mounting seat, and the bolt sequentially penetrates through the copper bar and the output pole piece to be in threaded connection with the nut. According to the integrated cover plate provided by the utility model, the cover plate body is directly provided with the mounting seats for mounting the output pole pieces and the copper bars, so that the types of parts are reduced and the cost is reduced; meanwhile, the movable base with the nut is arranged and is separated from the mounting seat, so that the manufacturing process is simple, the production efficiency is high, and the base is movably arranged and has a certain movement amount, so that the mounting of parts is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to an integrated cover plate and a battery module. Background Art

[0002] As a core component of an electric vehicle, the structural stability and reliability of a lithium-ion power battery module directly affect the performance and service life of the entire battery system. The integrated cover plate of the battery module forms a circuit by connecting multiple sub-polar plates in series with multiple battery cells, and finally performs series-parallel connection with an external copper bar through an output pole piece. To ensure the stability of overcurrent, the output pole piece and the copper bar need to be fixed together through bolts and a base with nuts. One end of the output pole piece is fixed on the integrated cover plate, and the other end is fixed on the base with nuts together with the copper bar. There are many types of parts. Moreover, when fixing the output pole piece and the copper bar, the hole positions of the output pole piece need to be basically completely aligned with the hole positions of the base with nuts. If there is a certain misalignment of the hole positions, it is easy to generate large stress, and in severe cases, the bolts cannot be installed smoothly, and the allowable manufacturing error of the parts is small. And currently, this base with nuts generally uses a separate injection-molded base, and the injection-molded base is integrally injection-molded with a nut as an insert and a plastic part, with complex manufacturing processes, low production efficiency, and high costs. Summary of the Utility Model

[0003] Based on this, in view of the technical problems that the current integrated cover plate needs to be connected with a separate injection-molded base to realize the connection between the copper bar and the output pole piece, there are many types of parts, and the allowable manufacturing error of the parts is small, the utility model provides an integrated cover plate and a battery module.

[0004] An integrated cover plate provided by the utility model includes a cover plate body, an output pole piece, a copper bar, and a bolt. An installation seat is arranged on the cover plate body, and a nut is arranged on the installation seat; one ends of the output pole piece and the copper bar are sequentially covered on the installation seat, and the bolt sequentially passes through the copper bar, the output pole piece and is threadedly connected with the nut.

[0005] The utility model directly arranges an installation seat for installing the output pole piece and the copper bar on the cover plate body, reduces the types of parts, and reduces costs; at the same time, a movable base with a nut is arranged, which is separately arranged from the installation seat, making the manufacturing process simple, the production efficiency high, and the base is movably arranged with a certain amount of movement, which is beneficial to the installation of parts.

[0006] As a further improvement of the above solution of the utility model, the output pole piece includes a pole piece body and a connecting portion perpendicular to the pole piece body; an installation groove is penetrated and opened at one end of the installation seat close to the cover plate body, and the connecting portion passes through the installation groove from below the installation seat and then covers on the base, one end of the copper bar covers on the connecting portion, and the bolt sequentially passes through the copper bar, the connecting portion and is threadedly connected with the nut on the base.

[0007] As a further improvement of the above solution of the present utility model, a stepped groove is formed through the mounting base, the base is movably arranged in the stepped groove and the bottom edge of the base is in contact with the stepped surface of the stepped groove, and the top surface of the base is in the same horizontal plane as the top surface of the mounting base.

[0008] As a further improvement of the above solution of the present utility model, the base is made of a steel structure, the nut is welded to the bottom of the base and an assembly hole I coaxial with the nut is formed in the base; an assembly hole II coaxial with the assembly hole I is formed in the connecting portion, an assembly hole III coaxial with the assembly hole II is formed in the copper row, and the bolt sequentially passes through the assembly hole III, the assembly hole II, the assembly hole I and is threadedly connected with the nut.

[0009] As a further improvement of the above solution of the present utility model, the mounting base and the cover plate body are integrally formed, and a limiting plate for limiting the connecting portion is integrally connected to one end of the top of the mounting base away from the cover plate body.

[0010] As a further improvement of the above solution of the present utility model, the width of the pole piece body is greater than the width of the connecting portion, a notch is provided at one end of the connection between the pole piece body and the connecting portion, and a limiting boss for limiting the pole piece body is integrally formed on one side of the bottom of the mounting base close to the notch.

[0011] As a further improvement of the above solution of the present utility model, a limiting buckle for clamping with the pole piece body is integrally formed on the cover plate body at one end of the pole piece body away from the connecting portion.

[0012] As a further improvement of the above solution of the present utility model, it further includes a plurality of sub-pole pieces arranged side by side, and pre-fixed buckles for clamping with the sub-pole pieces are provided on both the upper and lower sides of each sub-pole piece on the cover plate body.

[0013] As a further improvement of the above solution of the present utility model, the pole piece body and the connecting portion are integrally connected.

[0014] A battery module proposed by the present utility model includes the integrated cover plate as described above.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] 1. The present utility model directly provides a mounting base for mounting the output pole piece and the copper row on the cover plate body, reducing the types of parts and the cost; at the same time, a movable base with a nut is provided, which is separately arranged from the mounting base, making the manufacturing process simple, the production efficiency high, and the base is movably arranged with a certain amount of movement, which is beneficial to the installation of parts.

[0017] 2. The present utility model is provided with pre-fixed buckles on the integrated cover plate, which is convenient for the pre-installation of the sub-pole pieces and improves the assembly efficiency. Description of the Drawings

[0018] Figure 1 Structural schematic diagram of an integrated cover plate proposed in an embodiment of the present utility model;

[0019] Figure 2 Partial exploded view of an integrated cover plate proposed in an embodiment of the present utility model;

[0020] Figure 3 Structural schematic diagram of the cover plate body in an integrated cover plate proposed in an embodiment of the present utility model;

[0021] Figure 4 Pre - installation schematic diagram of the output pole piece, base and mounting seat in an integrated cover plate proposed in an embodiment of the present utility model;

[0022] Figure 5 Pre - installation schematic diagram of the output pole piece, base and mounting seat in an integrated cover plate proposed in an embodiment of the present utility model;

[0023] Figure 6 Pre - installation schematic diagram of the output pole piece, base and mounting seat in an integrated cover plate proposed in an embodiment of the present utility model.

[0024] Reference numerals: 1, cover plate body; 11, mounting seat; 12, mounting groove; 13, step groove; 14, limiting plate; 15, limiting boss; 16, limiting buckle; 17, pre - fixing buckle; 2, output pole piece; 21, pole piece body; 22, connecting part; 3, copper row; 4, base; 5, nut; 6, bolt; 7, sub - pole piece. Detailed implementation manners

[0025] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below in combination with specific embodiments. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0027] At present, one end of the output pole piece of the dust collection cover plate is fixed on the integrated cover plate assembly, and the other end is fixed on an independent injection molding base with a nut. There are many types of parts. Moreover, when fixing the output pole piece and the copper row, the hole positions of the output pole piece need to be basically completely aligned with the hole positions of the injection molding base. If there is a certain misalignment of the installation holes, it is easy to generate relatively large stress, and in severe cases, it will even cause the fixing bolts to be unable to be installed smoothly, and the allowable manufacturing error of the parts is small. At present, the injection molding base is integrally injection molded with a copper nut and the base. When producing the injection molding base, the copper nut needs to be fixed in the mold first and then injection molded, with a complex manufacturing process, low production efficiency, and high cost. For this reason, this embodiment provides an integrated cover plate.

[0028] Referring to Figure 1 、 Figure 2 , the integrated cover plate proposed in this embodiment includes a cover plate body 1, an output pole piece 2, a copper row 3, and a base 4, and may further include a plurality of sub-pole pieces 7.

[0029] Combined with Figure 3 、 Figure 4 , for the convenience of connecting with the copper row 3, an installation seat 11 is provided on the cover plate body 1. One end of the installation seat 11 close to the cover plate body 1 is provided with an installation groove 12 in a penetrating manner. One end of the installation seat 11 far from the cover plate body 1 is integrally formed with a limiting plate 14 extending upward. One side of the bottom of the installation seat 11 located in the installation groove 12 is integrally formed with a limiting boss 15. The installation seat 11 is also provided with a stepped groove 13 in a penetrating manner. In this embodiment, the number of installation seats 11 is two, and the two installation seats 11 are respectively arranged at both ends of the cover plate body 1. Two limiting buckles 16 are provided at the positions below each installation seat 11 on the cover plate body 1. A plurality of buckle groups are arranged side by side at the position between the two installation seats 11 on the cover plate body 1, and each buckle group includes two pre-fixed buckles 17 arranged up and down. In this embodiment, the cover plate body 1 adopts an integral structure, and the installation seat 11, the limiting buckle 16, and the pre-fixed buckle 17 are all integrally injection molded with the cover plate body 1. This embodiment designs the original integrated cover plate and the plastic base of the output pole piece 2 to be integrally injection molded, reducing the types of plastic parts and the number of molds, and reducing the cost.

[0030] In this embodiment, the number of bases 4 is two. The two bases 4 are respectively arranged in one-to-one correspondence with the two mounting seats 11. The base 4 is adapted to the step groove 13 of the corresponding mounting seat 11. The base 4 is movably arranged in the corresponding step groove 13, and the bottom edge of its bottom surface is attached to the step surface of the corresponding step groove 13, and its top surface is in the same horizontal plane as the top surface of the corresponding mounting seat 11. Each base 4 is made of steel structure. Two steel nuts 5 are welded to the bottom of the base 4, and two first assembly holes are penetrated through the base 4. The two first assembly holes are coaxially communicated with the two nuts 5 respectively. In this embodiment, a separate base 4 is provided, and the existing insert copper nuts are changed to a base 4 composed of a movable steel sheet and a steel nut welded together. It is separately produced from the mounting seat 11, and the manufacturing process is simple and the production efficiency is high; and the movable base 4 has a certain amount of movement, allowing a larger welding deviation of the copper busbar 3, which is beneficial to the installation of parts.

[0031] In this embodiment, the number of output electrode plates 2 is two. Each output electrode plate 2 includes a plate body 21 and a connecting portion 22 integrally connected. The connecting portion 22 is perpendicular to the plate body 21. The width of the plate body 21 is greater than the width of the connecting portion 22. A notch is provided at one end of the connection between the plate body 21 and the connecting portion 22 at a position corresponding to the limiting boss 15. The two output electrode plates 2 are respectively arranged in one-to-one correspondence with the two mounting seats 11. The connecting portion 22 of the output electrode plate 2 is adapted to the mounting groove 12 of the corresponding mounting seat 11. The connecting portion 22 passes through the mounting groove 12 from below the corresponding mounting seat 11 and covers above the corresponding mounting seat 11, and one end of the connecting portion 22 away from the plate body 21 contacts the limiting plate 14. The plate body 21 is located below the corresponding mounting seat 11. The limiting boss 15 extends into the notch position of the corresponding plate body 21 to limit the plate body 21, and the two limiting buckles 16 are clamped with the bottom of the plate body 21. Two second assembly holes are penetrated through the connecting portion 22, and the two second assembly holes are coaxially communicated with the two first assembly holes respectively.

[0032] In this embodiment, the number of copper busbars 3 is two. The two copper busbars 3 are respectively arranged in one-to-one correspondence with the two output electrode plates 2. One end of the copper busbar 3 covers above the connecting portion 22 of the corresponding output electrode plate 2. Two third assembly holes are opened on the copper busbar 3, and the two third assembly holes are coaxially communicated with the two second assembly holes of the corresponding connecting portion 22 respectively. Bolts 6 are arranged in both of the two third assembly holes. The bolts 6 sequentially pass through the corresponding second assembly holes and the first assembly holes and are threadedly connected with the corresponding nuts 5.

[0033] A plurality of sub-electrode plates 7 are arranged side by side along the length direction of the cover plate body 1, and the plurality of sub-electrode plates 7 are respectively arranged in one-to-one correspondence with a plurality of buckle groups. The two pre-fixed buckles 17 of the buckle group are respectively clamped with the upper and lower ends of the corresponding sub-electrode plate 7. The setting of the pre-fixed buckle 17 is convenient for pre-installing the electrode plate and improves the assembly efficiency.

[0034] With the above structural arrangement, when connecting the copper bar 3 and the output pole piece 2 in this embodiment, as Figure 4 shown, first place the base 4 in the step groove 13 of the corresponding mounting seat 11 and set the nut 5 downward; then as Figure 5 shown, pass the connecting portion 22 of the output pole piece 2 through the mounting groove 12 of the corresponding mounting seat 11 and then cover it on the mounting seat 11. The bottom of the pole piece body 21 is clamped with the limit buckle 16. At this time, the entire output pole piece 2 is fixed under the action of the limit plate 14, the limit protrusion, and the limit buckle 16. At this time, as Figure 6 shown, the two assembly holes II of the connecting portion 22 are respectively coaxially communicated with the two assembly holes I of the base 4; then the two assembly holes III of the copper bar 3 are respectively coaxially communicated with the two assembly holes II; then connect the copper bar 3, the output pole piece 2 and the nut 5 of the base 4 through the bolt 6, and that's it.

[0035] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0038] The above-described embodiments only represent several implementation manners of this utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of this utility model, several deformations and improvements can still be made, and these all belong to the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be subject to the appended claims.

Claims

1. An integrated cover plate, which comprises a cover plate body (1), an output pole piece (2), a copper row (3) and a bolt (6), and is characterized in that, A mounting seat (11) is provided on the cover plate body (1), and a nut (5) is provided on the mounting seat (11); one end of the output pole piece (2) and the copper bar (3) sequentially covers the mounting seat (11), and the bolt (6) sequentially passes through the copper bar (3), the output pole piece (2) and is threadedly connected to the nut (5).

2. The integrated cover plate according to claim 1, characterized in that, A stepped groove (13) is formed through the mounting seat (11), and a base (4) is movably arranged in the stepped groove (13). The bottom edge of the base (4) fits against the stepped surface of the stepped groove (13), and the top surface of the base (4) is in the same horizontal plane as the top surface of the mounting seat (11). A nut (5) is provided at the bottom of the base (4).

3. The integrated cover plate according to claim 2, wherein The output pole piece (2) includes a pole piece body (21) and a connecting portion (22) perpendicular to the pole piece body (21); an installation groove (12) is formed through one end of the mounting seat (11) close to the cover plate body (1). The connecting portion (22) passes through the installation groove (12) from below the mounting seat (11) and then covers the base (4). One end of the copper bar (3) covers the connecting portion (22), and the bolt (6) sequentially passes through the copper bar (3), the connecting portion (22) and is threadedly connected to the nut (5) on the base (4).

4. The integrated cover plate according to claim 3, wherein The base (4) is made of a steel structure. The nut (5) is welded to the bottom of the base (4), and an assembly hole one coaxial with the nut (5) is formed in the base (4); an assembly hole two coaxial with the assembly hole one is formed in the connecting portion (22), and an assembly hole three coaxial with the assembly hole two is formed in the copper bar (3). The bolt (6) sequentially passes through the assembly hole three, the assembly hole two, the assembly hole one and is threadedly connected to the nut (5).

5. The integrated cover plate according to claim 3, characterized in that The mounting seat (11) and the cover plate body (1) are integrally formed, and a limiting plate (14) for limiting the connecting portion (22) is integrally connected to one end of the top of the mounting seat (11) far from the cover plate body (1).

6. The integrated cover plate according to claim 3, wherein The width of the pole piece body (21) is greater than the width of the connecting portion (22). A notch is provided at one end of the connection between the pole piece body (21) and the connecting portion (22), and a limiting boss (15) for limiting the pole piece body (21) is provided on one side of the bottom of the mounting seat (11) close to the notch.

7. The integrated cover plate according to claim 3, characterized in that, A limiting buckle (16) that is snap-connected to the pole piece body (21) is integrally formed on the cover plate body (1) at one end of the pole piece body (21) far from the connecting portion (22).

8. The integrated cover plate according to claim 1, wherein, It further includes a plurality of sub-pole pieces (7) arranged side by side. Limiting pre-fastening buckles (17) that are snap-connected to the sub-pole pieces (7) are integrally formed on both the upper and lower sides of the cover plate body (1) where each sub-pole piece (7) is located.

9. The integrated cover plate according to claim 3, characterized in that The pole piece body (21) and the connecting portion (22) are integrally connected.

10. A battery module, characterized in that, It includes the integrated cover plate as described in any one of claims 1-9.

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