Battery module

Abstract

The utility model provides a battery module which can well protect a battery unit and enable a shell of the battery unit to be light in weight. The battery module includes: a case including a case body and a cover body, the cover body being provided at a top of the case body, the case body including a bottom plate and a wall portion, the wall portion being raised at a periphery of the bottom plate; the battery unit is arranged in the shell; the upper frame is arranged on the wall portion, the wall portion is provided with a protruding portion and a non-protruding portion, the protruding portion is higher than the non-protruding portion, and the upper frame is connected to the protruding portion.

Description

Technical Field

[0001] The utility model relates to an electronic device, and in particular to a battery module. Background Art

[0002] In recent years, in order to ensure access to affordable, reliable, sustainable and advanced energy for more people, research and development related to secondary batteries that contribute to energy efficiency is being carried out. However, in the research and development of battery modules related to secondary batteries, in order to reduce the weight of the outer shell of the battery module, the depth of the shell made of die-cast material and having a larger weight in the outer shell is generally reduced, and the depth of the cover body made of press-formed sheet material and having a smaller weight in the outer shell is correspondingly increased. However, this reduces the overall rigidity of the outer shell and cannot well protect the battery cells therein. Therefore, it is necessary to improve the battery module to overcome the above problems. Utility Model Content

[0003] The utility model provides a battery module, which can well protect the battery unit and make its shell light.

[0004] The utility model provides a battery module, comprising: an outer shell, comprising a shell and a cover, the cover is arranged on the top of the shell, the shell comprises a bottom plate and a wall portion, the wall portion stands up at the periphery of the bottom plate; a battery unit is arranged in the outer shell; and an upper frame is arranged on the wall portion, the wall portion has a protruding portion and a non-protruding portion, the protruding portion is higher than the non-protruding portion, and the upper frame is connected to the protruding portion.

[0005] In an embodiment of the present invention, the protrusion has a curved shape, and the curved shape extends along a direction from one end of the wall portion to the other end of the wall portion.

[0006] In an embodiment of the present invention, the wall portion includes two side walls opposite to each other in the front-rear direction of the battery module, the protrusions are located on the two side walls, and the upper frame is connected to the shell along the front-rear direction.

[0007] In an embodiment of the present invention, the battery module further includes a cross beam, the cross beam is connected to the wall portion in a width direction of the battery module, and the cross beam is connected to the upper frame.

[0008] In an embodiment of the present invention, the battery module further includes an auxiliary component, and the auxiliary component is disposed on the top of the upper frame.

[0009] In an embodiment of the present invention, the upper frame has a reinforcing rib, and the reinforcing rib extends along the length direction of the upper frame at the center of the upper frame.

[0010] Based on the above, in the battery module of the utility model, the upper frame is arranged on the protruding portion of the wall of the shell and is located at a higher position, so that the external load acting on the shell can be well received, so that the battery cells in the shell are protected from the external load. In addition, the wall of the shell has a non-protruding portion lower than the protruding portion, which can reduce the volume of the shell and thus reduce the weight of the shell. Therefore, the battery module of the utility model can well protect the battery cells and make its shell lightweight.

[0011] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of a battery module according to an embodiment of the present invention, showing axial directions X, Y, and Z.

[0013] Figure 2 yes Figure 1 A three-dimensional view of some components of a battery module.

[0014] Figure 3 yes Figure 2 Front view of the housing.

[0015] Figure 4 yes Figure 2 Rear view of the housing.

[0016] Figure 5 yes Figure 2 Top view of the battery module.

[0017] Figure 6 Show Figure 2 Auxiliary components are set on the upper frame.

[0018] Description of reference numerals:

[0019] 100: battery module;

[0020] 110: housing;

[0021] 112: housing;

[0022] 1121: bottom plate;

[0023] 1122: wall;

[0024] 1122a, 1122b, 1122c, 1122d: side walls;

[0025] 114: cover;

[0026] 120: battery unit;

[0027] 130: upper frame;

[0028] 132: Reinforcement;

[0029] 140: beam;

[0030] 150: auxiliary components;

[0031] C1: convex part;

[0032] C2: non-convex part;

[0033] X, Y, Z: axial directions. DETAILED DESCRIPTION

[0034] Figure 1 It is a cross-sectional view of a battery module according to an embodiment of the present invention, showing axial directions X, Y, and Z. Figure 2 yes Figure 1 A three-dimensional diagram of some components of a battery module. Please refer to Figure 1 and Figure 2 The battery module 100 of this embodiment is, for example, a battery module for a vehicle. When the battery module 100 is installed in a vehicle, the axial direction X is, for example, the forward direction of the vehicle. The battery module 100 includes a shell 110, a battery cell 120 and an upper frame 130. The shell 110 includes a shell 112 and a cover 114, and the cover 114 is disposed on the top of the shell 110. The shell 112 includes a bottom plate 1121 and a wall portion 1122, and the wall portion 1122 stands up at the periphery of the bottom plate 1121. The battery cell 120 is disposed in the shell 110. The upper frame 130 is disposed on the wall portion 1122 and is covered by the cover 114. The upper frame 130 is connected to the wall portion 1122, for example, by means of screws.

[0035] Figure 3 yes Figure 2 Front view of the housing. Figure 4 yes Figure 2 Rear view of the housing. Figures 2 to 4 , the wall portion 1122 of the present embodiment has a protruding portion C1 and a non-protruding portion C2, the protruding portion C1 is higher than the non-protruding portion C2, and the upper frame 130 is connected to the protruding portion C1. As described above, the upper frame 130 is disposed on the protruding portion C1 of the wall portion 1122 of the shell 112 and is located at a higher position, and can well receive the external load acting on the shell 110, so that the battery cell 120 in the shell 110 is protected from the external load. In addition, as described above, the wall portion 1122 of the shell 112 has a non-protruding portion C2 lower than the protruding portion C1, which can reduce the volume of the shell 112 and thus reduce the weight of the shell 110. Therefore, the battery module 100 of the present embodiment can well protect the battery cell 120 and can make its shell 110 lightweight.

[0036] Specifically, in this embodiment, the housing 112 is made of a die-cast material and has a relatively large weight, and the cover 114 is made of a press-formed plate and has a relatively small weight. As described above, the wall 1122 of the housing 112 is formed as a non-protruding portion C2 with a relatively low height, and accordingly, the cover 114 has a relatively large depth at a position corresponding to the non-protruding portion C2 of the housing 112 and can be closely fitted to the non-protruding portion C2, so as to reduce the volume of the housing 112 and increase the volume of the cover 114, thereby reducing the overall weight of the housing 110.

[0037] like Figure 3 and Figure 4 As shown, the protrusion C1 of this embodiment has a curved shape, and the curved shape extends from one end of the wall portion 1122 to the other end of the wall portion 1122. Accordingly, the height of the protrusion C1 increases smoothly from the junction of the protrusion C1 and the non-protrusion C2 to the top of the protrusion C1, and the height of the junction of the protrusion C1 and the non-protrusion C2 does not change discontinuously. Therefore, the cover 114 can be smoothly joined to the protrusion C1 and the non-protrusion C2 to ensure a good seal between the cover 114 and the housing 112.

[0038] In detail, the wall portion 1122 of the present embodiment includes two side walls 1122a and 1122b opposite to each other in the front-to-back direction (axial direction X) of the battery module 100 and two side walls 1122c and 1122d opposite to each other in the width direction (axial direction Y) of the battery module 100. The side walls 1122a, 1122b, 1122c, and 1122d roughly form a rectangle, the side walls 1122a and 1122b are the short sides of the rectangle, and the side walls 1122c and 1122d are the long sides of the rectangle. The protrusion C1 is located on the side walls 1122a and 1122b, and the upper frame 130 is connected to the housing 112 along the front-to-back direction (axial direction X) of the battery module 100. Accordingly, the upper frame 130 extends along the front-to-back direction (axial direction X) of the battery module 100 and has a large length, thereby effectively increasing the rigidity of the housing 110.

[0039] Figure 5 yes Figure 2 Top view of the battery module. Figure 2 and Figure 5In the present embodiment, the battery module 100 further includes a crossbeam 140, which is connected to the side walls 1122c, 1122d of the wall portion 1122 in the width direction (axial direction Y) of the battery module 100, and the crossbeam 140 is interconnected with the upper frame 130. The crossbeam 140 and the upper frame 130 are interconnected, for example, by means of screws. By arranging the crossbeam 140 in the shell 112 and interconnecting the crossbeam 140 and the upper frame 130, the rigidity of the shell 110 can be further improved. In addition, in the present embodiment, the upper frame 130 has a reinforcing rib 132, which extends in the center of the upper frame 130 along the length direction (axial direction X) of the upper frame 130, so that the upper frame 130 has high rigidity.

[0040] Figure 6 Show Figure 2 The auxiliary components are set on the upper frame of the Figure 6 The battery module 100 of this embodiment may further include an auxiliary component 150, which is an electronic component in the battery module 100 and is disposed on the top of the upper frame 130. Accordingly, the auxiliary component 150 can be protected from external loads by the highly rigid upper frame 130. More specifically, the auxiliary component 150 is, for example, an auxiliary setting such as a control component or a switch component in the battery module 100, or other types of high-voltage components.

[0041] In summary, in the battery module of the present invention, the upper frame is disposed on the protruding portion of the wall of the shell and is located at a higher position, and can well receive the external load acting on the shell, so that the battery cells in the shell are protected from the external load. In addition, the wall of the shell has a non-protruding portion lower than the protruding portion, which can reduce the volume of the shell and thus reduce the weight of the shell. Therefore, the battery module of the present invention can well protect the battery cells and can make its shell lightweight.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A battery module, characterized in that: include: The housing comprises a shell and a cover, wherein the cover is arranged on the top of the shell, and the shell comprises a bottom plate and a wall portion, wherein the wall portion stands on the periphery of the bottom plate; A battery unit is disposed in the housing; as well as an upper frame, arranged on the wall portion, The wall portion has a protruding portion and a non-protruding portion, the protruding portion is higher than the non-protruding portion, and the upper frame is connected to the protruding portion.

2. The battery module according to claim 1, characterized in that: The protrusion has a curved shape extending in a direction from one end of the wall portion toward the other end of the wall portion.

3. The battery module according to claim 1, characterized in that: The wall portion includes two side walls that are opposite to each other in the front-rear direction of the battery module, and the protrusions are located on the two side walls. The upper frame is connected to the housing along the front-rear direction.

4. The battery module according to claim 3, characterized in that: Also included is a crossbeam connected to the wall portion in a width direction of the battery module, The cross beam and the upper frame are connected to each other.

5. The battery module according to claim 3, characterized in that: It also includes an auxiliary component, which is arranged on the top of the upper frame.

6. The battery module according to claim 3, characterized in that: The upper frame has a reinforcing rib extending in the center of the upper frame along the length direction of the upper frame.

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