Battery module with compact structure and battery pack

Abstract

The utility model relates to a battery module with a compact structure and a battery pack, the battery pack comprises a box body and a battery module, the battery module comprises a battery module composed of a plurality of battery cells arranged side by side, the top surface of the battery module is provided with a sampling wire harness, and two sides of the battery module are provided with end plates; each end plate comprises a side plate and an inward folding top plate, reinforcing ribs are arranged between the inward folding top plates and the side plates, and side face reinforcing parts attached to the side plates are arranged at the two ends of the side plates; an upper supporting plate is erected on the top of the inner folding top plate. According to the utility model, the end plate adopts the inner folding top plate facing the battery module, and the end plate is connected with the upper support plate, so that the overall volume of the battery module is reduced, and an extra space can be provided for the inner wall of the module on the premise of not increasing the length size of the battery module; reinforcing ribs are arranged between the inwards-folded top plate and the side plates of the end plates and provide support for the inwards-folded top plate, and the end plates are provided with side face reinforcing parts, so that the structural strength of the side plates is improved, and the stability and reliability of the end plates are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile battery field especially is a kind of compact structure battery module and battery pack. BACKGROUND

[0002] Battery module is combined by several battery monomers by parallel and series connection mode.Each battery monomer is the most basic energy storage unit in battery system, usually provides 3V to 4V voltage.Battery module integrates the voltage and capacity of multiple monomers by internal connection mode to meet the demand of higher voltage and larger capacity.

[0003] In the related prior art, patent CN202122534319-battery module and battery pack, the technical scheme disclosed in the document is provided with an end plate with a bending portion outside the module composed of stacked battery cells, and a plurality of hole positions are arranged at the bending portion, which can be used to cooperate with other workpieces. However, the bending direction of the end plate is outwardly away from the battery cells, which increases the volume of the battery pack as a whole and occupies more space, which is not conducive to improving the volume energy density of the battery pack. At the same time, the outward bending of the end plate has no supporting structure, which is not conducive to the reliability and stability of the bracket. SUMMARY

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A compact structure battery module, comprising a battery module, a sampling harness, an end plate and an upper main plate; the battery module comprises a plurality of battery cells arranged side by side, the sampling harness is arranged on the top surface of the battery module; the end plate is arranged on both sides of the battery module, the end plate comprises a side plate and an inwardly folded top plate facing the battery module, a reinforcing rib is arranged between the inwardly folded top plate and the side plate, the end plate further comprises a side reinforcing portion, and the side reinforcing portion is attached to the side plate; the upper support plate is arranged on the top of the inwardly folded top plate.

[0006] Further, the battery module further comprises a harness mounting bracket, the sampling harness is fixed on the harness mounting bracket by rolling, the harness mounting bracket and the upper support plate are respectively provided with a plurality of rolling holes for rolling.

[0007] Further, the inner side of the side plate is provided with a bracket mounting plate for connecting the harness mounting bracket, and the top surface of the end plate is provided with an avoiding gap for avoiding the harness mounting bracket.

[0008] Further, the bracket mounting plate and the harness mounting bracket are connected by a first bolt, the bracket mounting plate is provided with a first assembly hole for assembling the first bolt, and the harness mounting bracket is provided with a second assembly hole for assembling the first bolt.

[0009] Further, the edge of the upper support plate is provided with a bending flange towards the upper side.

[0010] Further, the upper support plate and the end plate are connected by a second bolt, the inner folding top plate of the end plate is provided with a first perforation for assembling the second bolt, and the upper support plate is provided with a second perforation for assembling the second bolt.

[0011] A battery pack comprising a box body and the battery module.

[0012] Compared with the prior art, the battery pack has the advantages that:

[0013] 1. The end plate of the battery module is provided with an inner folding top plate facing the battery module, and the end plate and the upper support plate are connected, so that the overall size of the battery module is reduced, and additional space is provided for the inner wall of the module without increasing the length of the battery module; the inner folding top plate and the side plate of the end plate are provided with a reinforcing rib for supporting the inner folding top plate, and the end plate is provided with a side surface reinforcing part attached to the side plate to increase the structural strength of the side plate, thereby improving the stability and reliability of the end plate.

[0014] 2. The battery module is provided with a wire harness mounting plate, and the sampling wire harness is fixed on the wire harness mounting plate by rolling, thereby improving the reliability of sampling and reducing the potential threat of the battery module in operation.

[0015] 3. The upper support plate is erected on the inner folding top plate, and the edge of the upper support plate is provided with a bending flange towards the upper side, thereby reducing the additional size in the overall height and width directions and improving the space utilization. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the battery pack of the utility model.

[0017] Figure 2 It is a structural schematic view of the battery pack of the utility model.

[0018] Figure 3 It is an exploded view of the structure of the battery pack of the utility model.

[0019] Figure 4 It is a structural schematic view of the battery module without the upper support plate and the sampling wire harness.

[0020] Figure 5 It is Figure 4 another perspective view.

[0021] Figure 6 It is an exploded view of the structure of the battery module without the upper support plate and the sampling wire harness.

[0022] In the figure, the reference signs are:

[0023] box 10, end plate 20, side reinforcement 21, inner folding top plate 22, first bolt hole 221, avoiding notch 23, reinforcing rib 24, bracket mounting plate 25, first assembly hole 251, side plate 26, upper support plate 30, bending flange 31, second hole 32, sampling harness 40, harness mounting bracket 50, bracket connecting part 51, second assembly hole 52, battery cell 60, rolling hole 70. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0025] In the description of the present application, it should be noted that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "outer", "top" and the like appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application. The device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear, they are also only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] Referring to Figure 1 and Figure 2 A compact battery module and a battery pack, the battery pack is composed of a box 10 and a battery module, and the battery module is installed in the box 10. The battery module includes a battery module composed of a plurality of battery cells 60 arranged side by side, and the top surface of the battery module is provided with a sampling harness 40, and the two ends of the battery module are provided with end plates 20, and the top of the inner folding top plate 22 of the two end plates 20 is provided with an upper support plate 30. The wire harness mounting bracket 50 is also provided between the end plates 20 for fixing the sampling harness 40, improving the reliability of sampling and reducing the potential threat of the battery module operation. Specifically, in the present embodiment, the rolling belt (not marked in the figure) is used to fix the sampling harness 40, and the wire harness mounting bracket 50 is provided with a plurality of rolling holes 70 for the rolling belt to pass through.

[0027] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 6The end plate 20 comprises a side plate 26 and an inner folded top plate 22 facing the battery module, which reduces the space occupied by the battery module in the length direction. A reinforcing rib 24 is arranged between the side plate 26 and the inner folded top plate 22 to increase the structural rigidity, improve the stability and reliability of the end plate 20. The end plate 20 is further provided with a side reinforcing part 21 arranged on both sides of the side plate 26 and adhered to the side plate 26 to strengthen the strength of the side plate 26. The inner side of the side plate 26 is provided with a bracket mounting plate 25, the two ends of the wire harness mounting bracket 50 are connected with the bracket mounting plate 25 through first bolts (not shown in the figure), the bracket mounting plate 25 is provided with a first assembly hole 251, the two ends of the wire harness mounting bracket 50 are provided with a bracket connecting part 51, the bracket connecting part 51 is provided with a second assembly hole 52, specifically, the shank of the first bolt passes through the first assembly hole 251 and the second assembly hole 52 in sequence, and then is screwed with a corresponding first nut (not marked in the figure) for fixed connection. The top surface of the end plate 20 is provided with a avoiding gap 23 for avoiding the wire harness mounting bracket 50, after the end plate 20 is assembled to both sides of the battery module, the wire harness mounting bracket 50 can pass through the avoiding gap 23, be arranged on the bracket mounting plate 25, and then be fixed to the wire harness mounting bracket 50 by using a strap.

[0028] Referring to Figure 1 , Figure 2 and Figure 3 , the upper supporting plate 30 is connected with the inner folded top plate 22 of the end plate 20 through a plurality of second bolts (not shown in the figure), the inner folded top plate 22 is provided with a first through hole 221 for the shank of the second bolt to pass through, and the upper supporting plate 30 is provided with a plurality of second through holes 32 for the shank of the second bolt to pass through, specifically, the second bolt passes through the first through hole 221 and the second through hole 32 in sequence, and is screwed with a corresponding second nut (not marked in the figure) below the inner folded top plate 22 for fixed connection. The edge of the upper supporting plate 30 is provided with a bent flange 31, the bent flange 31 is upward, which reduces the additional size in the overall height and width directions and improves the space utilization. The upper supporting plate 30 and the bent flange 31 are provided with a plurality of strap holes 70 for assisting the fixing of the sampling wire harness 40. In addition, the top surface of the upper supporting plate 30 is provided with a plurality of nut columns (not shown in the figure), which can be used for subsequent installation of a protection plate.

[0029] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-substantial change made by using the concept should be regarded as an infringement of the protection scope of the present application.

Claims

1. A compact battery module, characterized by: The battery module, the sampling harness, the end plate and the upper support plate are included. The battery module includes a plurality of parallelly arranged battery cells. The sampling harness is arranged on the top surface of the battery module. The end plate is arranged on both sides of the battery module, and includes a side plate and an inwardly folded top plate facing the battery module. The end plate is further provided with a side reinforcement part which is attached to the side plate. The upper support plate is arranged on the top of the inwardly folded top plate.

2. The compact battery module of claim 1, wherein: The battery module further includes a harness mounting bracket, and the sampling harness is fixed to the harness mounting bracket by rolling.

3. The compact battery module of claim 2, wherein: The side plate is provided with a bracket mounting plate for connecting the harness mounting bracket.

4. The compact battery module of claim 3, wherein: The top surface of the end plate is provided with a gap for avoiding the harness mounting bracket.

5. The compact battery module of claim 1, wherein: The bracket mounting plate and the harness mounting bracket are connected by a first bolt.

6. The compact battery module of claim 1, wherein: The edge of the upper support plate is provided with a bending flange facing upward.

7. A battery pack, characterized by: The upper support plate and the end plate are connected by a second bolt. The battery module is fixed in a box.

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