Battery pack

Abstract

The utility model discloses a battery pack. The battery pack comprises a box body, the supporting frame is connected to the box body; the BMS assembly comprises a mounting frame and a BMS arranged on the mounting frame, and connecting lugs are arranged on the mounting frame; the transfer frame is arranged between the connecting lug and the supporting frame, and a first connecting hole connected with the supporting frame and a second connecting hole connected with the connecting lug are formed in the transfer frame. According to the battery pack disclosed by the utility model, the size and the structure of the box body and the support frame do not need to be adjusted through the arrangement of the transfer frame, so that the production efficiency of a production line is ensured, and later management is facilitated due to the fact that the structures of the box body and the support frame are kept unchanged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery pack. BACKGROUND

[0002] The BMS (BATTERY MANAGEMENT SYSTEM, battery management system) in the battery pack needs to replace the BMS fixing support on the box body synchronously when replacing the model because the sizes of the BMS of different brands or different string numbers are inconsistent. When the size of the BMS is large and the space in the battery pack is limited, the locking space between the BMS fixing support and the battery pack is blocked, and the tightening wrench cannot enter the installation. Therefore, the welding position of the support frame in the battery pack needs to be adjusted. As a result, the battery box needs to adjust the production tooling during production. Because of the back and forth switching of the production tooling, the production efficiency is reduced, and the management cost is increased due to the multi-type box structure. SUMMARY

[0003] To solve at least one problem existing in the prior art, according to one aspect of the utility model, a battery pack is provided, comprising:

[0004] a box body;

[0005] a support frame connected to the box body;

[0006] a BMS assembly comprising a mounting frame and a BMS arranged on the mounting frame, the mounting frame being provided with a connecting lug;

[0007] an adapter frame arranged between the connecting lug and the support frame, the adapter frame being provided with a first connecting hole connected with the support frame and a second connecting hole connected with the connecting lug.

[0008] In some embodiments, the adapter frame comprises:

[0009] a connecting plate arranged on the top of the support frame, the connecting plate being provided with the first connecting hole and the second connecting hole;

[0010] a limiting plate arranged on the side of the support frame away from the box body and being arranged at an angle with the connecting plate.

[0011] In some embodiments, the battery pack comprises two support frames, and the mounting frame has two connecting lugs;

[0012] In the first direction of the box body, each end of the connecting plate is provided with the first connecting hole and the second connecting hole, the first connecting hole of each end is connected with one support frame, and the second connecting hole of each end is connected with one connecting lug.

[0013] In some embodiments, one end of the connecting plate is provided with an extension part extending away from the box body and provided with the second connecting hole.

[0014] In some embodiments, a projection of the extension part on a plane perpendicular to the second direction in the second direction of the box body is located between the two first connecting holes, wherein the second direction is perpendicular to the first direction.

[0015] In some embodiments, an end of the extension part away from the box body and a side away from the limiting plate are provided with chamfers.

[0016] In some embodiments, the limiting plate is formed by bending.

[0017] In some embodiments, an included angle between the connecting plate and the limiting plate is 90°.

[0018] In some embodiments, a nut is riveted on the adapter frame, the nut is provided corresponding to the second connecting hole and is located on a side away from the BMS for connecting with the connecting lug.

[0019] In some embodiments, the adapter frame is provided with a weight-reducing hole.

[0020] In summary, the cooling system, the battery pack and the automobile provided by the utility model have the following technical effects:

[0021] By setting the adapter frame, when the BMS and the mounting frame of different sizes are needed, the first connecting hole of the adapter frame is connected with the supporting frame, and the position of the second connecting hole corresponding to the position of the connecting lug of the mounting frame is set, that is, the mounting of the box body and the BMS of different sizes can be realized, the size and structure of the box body and the supporting frame do not need to be adjusted, the production efficiency of the production line is ensured, and since the structure of the box body and the supporting frame remains unchanged, the management in the later period is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a decomposition schematic view of the battery pack of the utility model embodiment;

[0023] Figure 2 It is a decomposition schematic view of the battery pack of the utility model embodiment; Figure 1 It is a schematic view of one angle of the adapter frame in the utility model embodiment;

[0024] Figure 3 It is a schematic view of another angle of the adapter frame in the utility model embodiment. Figure 1 It is a schematic view of another angle of the adapter frame in the utility model embodiment.

[0025] The accompanying drawings: 100-battery pack, 10-box, 20-support frame, 21-third connecting hole, 30-BMS assembly, 31-mounting frame, 311-connection ear, 312-fourth connecting hole, 32-BMS, 40-adapter frame, 41-first connecting hole, 42-second connecting hole, 43-connection plate, 44-limiting plate, 45-extension, 50-nut. DETAILED DESCRIPTION

[0026] In order to better understand and implement, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0027] In the description of the utility model, it should be explained that the directions or position relations indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0029] The utility model will be further described in detail below in combination with the drawings.

[0030] In the prior art, due to the replacement of different BMS models, as the size of the BMS 32 becomes larger, the mounting frame 31 is also replaced synchronously, and when the BMS 32 and the mounting frame 31 are assembled into an assembly and installed on the support frame 20 of the box 10, the third connecting hole 21 on the support frame 20 is blocked by the BMS 32, and the wrench cannot be inserted to connect the support frame 20, therefore, in one way, the support frame 20 needs to be moved away from the BMS 32, and then further connected with the mounting frame 31, but this improved way will cause the adjustment of the box 10 production tooling, thereby affecting the production capacity; and with the production of different types of boxes 10, the storage cost and management cost of the box 10 are increased.

[0031] Therefore, in order to facilitate the installation of the same type of box 10 and different sizes of BMS 32 and mounting frame 31, please refer to Figures 1 to 3 The utility model embodiment provides a battery pack 100, which comprises a box 10, a support frame 20, a BMS assembly 30 and an adapter frame 40.

[0032] The box 10 is used as a mounting base for accommodating the battery; the support frame 20 is connected to the box 10; the BMS assembly 30 comprises a mounting frame 31 and a BMS 32 arranged on the mounting frame 31, and the mounting frame 31 is provided with a connecting lug 311; the adapter frame 40 is arranged between the connecting lug 311 and the support frame 20, and the adapter frame 40 is provided with a first connecting hole 41 connected to the support frame 20 and a second connecting hole 42 connected to the connecting lug 311.

[0033] The battery pack 100 is provided with the adapter frame 40, when the BMS 32 and the mounting frame 31 of different sizes are needed, the first connecting hole 41 of the adapter frame 40 is connected to the support frame 20, and the position of the second connecting hole 42 corresponding to the position of the connecting lug 311 of the mounting frame 31 is set, that is, the box 10 and the BMS 32 of different sizes can be mounted, and the size and structure of the box 10 and the support frame 20 do not need to be adjusted, the production efficiency of the production line is ensured, and since the structure of the box 10 and the support frame 20 remains unchanged, the management in the later period is facilitated.

[0034] In the mounting of the battery pack 100 of the embodiment, the third connecting hole 21 of the adapter frame 40 and the support frame 20 is connected first to limit the mounting position of the adapter frame 40, and then the fourth connecting hole 312 of the connecting lug 311 of the mounting frame 31 is connected to the second connecting hole 42 after the BMS 32 and the mounting frame 31 are assembled into the BMS assembly 30, since the position of the second connecting hole 42 can be set corresponding to the size of the BMS 32 and the mounting frame 31, the adapter frame 40 is used as a connecting medium, the production tooling of the box 10 does not need to be changed, the production efficiency is ensured, and the same type of box 10 is convenient for management in the later period.

[0035] In the mounting of the battery pack 100 of the embodiment, the third connecting hole 21 of the adapter frame 40 and the support frame 20 is connected first to limit the mounting position of the adapter frame 40, and then the fourth connecting hole 312 of the connecting lug 311 of the mounting frame 31 is connected to the second connecting hole 42 after the BMS 32 and the mounting frame 31 are assembled into the BMS assembly 30, since the position of the second connecting hole 42 can be set corresponding to the size of the BMS 32 and the mounting frame 31, the adapter frame 40 is used as a connecting medium, the production tooling of the box 10 does not need to be changed, the production efficiency is ensured, and the same type of box 10 is convenient for management in the later period. Figure 2 Figure 3 The adapter frame 40 of the embodiment comprises a connecting plate 43 and a limiting plate 44, the connecting plate 43 is arranged on the top of the support frame 20, and the connecting plate 43 is provided with the first connecting hole 41 and the second connecting hole 42; the limiting plate 44 is arranged at an angle with the connecting plate 43 and is arranged on the side of the support frame 20 away from the box 10, in this way, the connecting plate 43 and the limiting plate 44 arranged at an angle can help limit the mounting of the entire adapter frame 40 and the support frame 20.

[0036] For example, the angle between the two can be set to 90°, so that the connecting plate 43 is supported by the top of the support frame 20, the limiting plate 44 abuts against the side wall of the support frame 20, and the structure of the entire adapter frame 40 corresponds to the structure of the support frame 20. When the entire adapter frame 40 is placed on the support frame 20, the limiting plate 44 touches the side of the support frame 20, which indicates that it is placed in place.

[0037] ​It can be understood that in order to ensure the stability of the installation, the battery pack 100 includes two support frames 20, and the mounting frame 31 has two connecting ears 311; along the first direction a of the box body 10, each end of the connecting plate 43 is provided with a first connecting hole 41 and a second connecting hole 42, the first connecting hole 41 of each end is connected with one of the support frames 20, and the second connecting hole 42 of each end is connected with the connecting ear 311; in this way, after the BMS is connected through the arrangement mode of the two support frames 20 and the two connecting ears 311, the gravity pressure of the BMS 32 is dispersed to the box body 10, the stability of the installation is ensured, and the stability of the BMS 32 during long-term use is ensured.

[0038] Further, in order to facilitate the molding of the entire adapter frame 40, the limiting plate 44 is molded by bending, that is, in the original state, a plate body is cut to generate a cutting line and has a to-be-bent part to be cut, and the limiting plate 44 can be molded by applying an external force to the to-be-bent part; in this way, the bending molding mode facilitates the rapid molding of the entire adapter frame 40 and can also ensure the structural strength of the entire adapter frame 40.

[0039] Among them, in order to correspond to the mounting position of one of the connecting ears 311, when one of the second connecting holes 42 is arranged on the connecting plate 43, one end of the connecting plate 43 is provided with an extension part 45 extending away from the box body 10; in this way, through the arrangement of the extension part 45, the length of the connecting ear 311 can be adapted, that is, when different sizes of BMS 32 need to be installed, the length of the connecting ear 311 is extended, and the extension part 45 is correspondingly extended by a length, so that the size of the extension part 45 is adapted to the size of the connecting ear 311, so that the connection of the two can be realized, and the box body 10 and the support frame 20 can be in the original state, avoiding the change of the box body 10 line affecting the production capacity.

[0040] Among them, when the extension part 45 is arranged, the projection of the extension part 45 on the plane perpendicular to the second direction b along the second direction b of the box body 10 is located between the two first connecting holes 41; in this way, compared with the mode of arranging the extension part 45 on the outside of the first connecting hole 41, the length of the adapter frame 40 along the first direction a of the box body 10 is avoided to be increased, and the extension part 45 is arranged on the inside of the first connecting hole 41, thereby reducing the occupied space.

[0041] In one embodiment, the first direction a can be the length direction of the box body 10, and the second direction b can be the width direction of the box body 10; or in another embodiment, the first direction a can be the width direction of the box body 10, and the second direction b can be the length direction of the box body 10.

[0042] Further, the end of the extension 45 away from the box body 10 and away from the side of the limiting plate 44 is provided with a chamfer, so that the chamfer can not only reduce the weight of the whole adapter frame 40, but also avoid the risk of scratching other components by sharp corners.

[0043] Wherein, the side of the support frame 20 away from the BMS 32 is provided with a riveted nut, so as to be connected with the connecting plate 43 conveniently. Figure 3 In order to quickly realize the connection with the connecting lug 311, the adapter frame 40 is further provided with a nut 50 riveted thereon, and the nut 50 is arranged corresponding to the second connecting hole 42, and the nut 50 is arranged on the side of the connecting plate 43 away from the BMS 32, and is used for connecting with the connecting lug 311, so that when the mounting frame 31 and the connecting plate 43 are connected by bolts, the locking can be realized conveniently.

[0044] It can be understood that, in order to reduce the weight of the whole adapter frame 40, the weight-reducing holes can be arranged on the connecting plate 43 and / or the limiting plate 44, so that part of the material is removed through the arrangement of the weight-reducing holes, so as to reduce the weight of the whole adapter frame 40, that is, the weight of the whole battery pack 100 is reduced.

[0045] The above battery pack 100, by arranging the adapter frame 40 to include the connecting plate 43 and the limiting plate 44, can facilitate the quick positioning of the placement position of the adapter frame 40 when connected with the support frame 20; by arranging the extension 45 on the connecting plate 43, the position of the connecting lug 311 of the mounting frame 31 can be corresponded, and compared with the mode that the extension 45 is arranged on the outer side of the first connecting hole 41, the occupied space in the first direction of the box body 10 along the connecting plate 43 can be reduced; and by riveting the nut 50 at the position of the second connecting hole 42, the subsequent quick connection with the connecting lug 311 can be facilitated.

[0046] The technical means disclosed by the utility model scheme is not limited to the technical means disclosed by the above-mentioned embodiments, and also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements are also regarded as the protection range of the utility model.

Claims

1. A battery pack (100) characterized by, The battery pack (100) comprises: a box (10); a support frame (20) connected to the box (10); a BMS assembly (30) comprising a mounting frame (31) and a BMS (32) arranged on the mounting frame (31), the mounting frame (31) being provided with a connecting lug (311); an adapter frame (40) arranged between the connecting lug (311) and the support frame (20), the adapter frame (40) being provided with a first connecting hole (41) connected to the support frame (20) and a second connecting hole (42) connected to the connecting lug (311).

2. The battery pack (100) according to claim 1, characterized in that, The adapter frame (40) comprises: a connecting plate (43) arranged on the top of the support frame (20), the connecting plate (43) being provided with the first connecting hole (41) and the second connecting hole (42); a limiting plate (44) arranged at an angle with the connecting plate (43) on the side of the support frame (20) away from the box (10).

3. The battery pack (100) according to claim 2, wherein the battery pack (100) comprises two support frames (20), and the mounting frame (31) has two connecting lugs (311); in the first direction of the box (10), each end of the connecting plate (43) is provided with the first connecting hole (41) and the second connecting hole (42), the first connecting hole (41) at each end is connected to one of the support frames (20), and the second connecting hole (42) at each end is connected to one of the connecting lugs (311).

4. The battery pack (100) according to claim 2 or 3, wherein one end of the connecting plate (43) is provided with an extension (45) extending away from the box (10) and provided with the second connecting hole (42).

5. The battery pack (100) according to claim 4, characterized in that The projection of the extension (45) in the second direction of the box (10) on a plane perpendicular to the second direction is located between the two first connecting holes (41), wherein the second direction is perpendicular to the first direction.

6. The battery pack (100) of claim 4, wherein, The end of the extension (45) away from the box (10) and the side away from the limiting plate (44) are chamfered.

7. The battery pack (100) according to claim 2 or 3, characterized in that, The limiting plate (44) is formed by bending.

8. The battery pack (100) according to claim 2 or 3, characterized in that, The angle between the connecting plate (43) and the limiting plate (44) is 90°.

9. The battery pack (100) according to any one of claims 1-3, characterized in that, The adapter frame (40) is further riveted with a nut (50), the nut (50) is arranged corresponding to the second connecting hole (42) on the side away from the BMS (32) and is used to connect to the connecting lug (311).

10. The battery pack (100) according to any one of claims 1-3, characterized in that, The adapter frame (40) is provided with a weight-reducing hole.

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