Reinforcement assembly and battery module

Abstract

The present application provides a reinforcement assembly and a battery module. The reinforcement assembly comprises: a first support member and a second support member; the first support member comprises a support body and a reinforcement portion; and the reinforcement portion protrudes from the support body and extends towards the second support member to support the second support member. The reinforcement portion is connected to the second support member and supports the second support member, so as to provide lateral compression resistance.

Description

Strengthen components and battery modules

[0001] This application claims priority to the Chinese patent application with application number 202322924974.6 filed with the Chinese Patent Office on October 30, 2023. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of batteries, and in particular to a reinforcement component and a battery module. Background Art

[0003] Steel crossbeams or reinforcement beams are usually formed in battery modules through module stamping. However, module stamping has limitations. The crossbeams or reinforcement beams usually formed have closed cross-sections. It is impossible to stamp the internal ribs of the profile to provide lateral anti-extrusion capabilities, and it cannot be applied to tall, long and narrow beam sections. SUMMARY OF THE INVENTION

[0004] The present application provides a reinforcement component and a battery module to solve the above technical problems.

[0005] In a first aspect, the present application provides a reinforcement assembly, comprising:

[0006] A first support member and a second support member, wherein the first support member includes a support body and a reinforcement portion, the reinforcement portion protrudes from the support body and extends toward the second support member to connect with the second support member.

[0007] In an optional embodiment of the present application, the support body includes a first sub-support member and a second sub-support member, and the first sub-support member and the second sub-support member are located on the same side of the second support member, wherein one of the first sub-support member and the second sub-support member is connected to one end of the reinforcement member away from the second support member, and the other is connected to the other end of the reinforcement member away from the second support member.

[0008] In an optional embodiment of the present application, the reinforcement portion includes a first reinforcement member and a second reinforcement member, one end of the first reinforcement member is connected to the second support member, and the other end is connected to one of the first sub-support member and the second sub-support member;

[0009] One end of the second reinforcement is connected to the second support member, and the other end of the second reinforcement is connected to the other of the first sub-support member and the second sub-support member.

[0010] In an optional embodiment of the present application, the reinforcement portion further includes a third reinforcement member, both ends of the third reinforcement member are respectively connected to the first reinforcement member and the second reinforcement member to form the reinforcement portion, wherein the third reinforcement member is connected to the second support member.

[0011] In an optional embodiment of the present application, the reinforcement assembly further includes a third support member, and two ends of the third support member are respectively connected to the first support member and the second support member.

[0012] In an optional embodiment of the present application, a fixing member is further provided at one end of the first support member and the second support member away from the third support member, the fixing member of the first support member extends toward a side away from the first support member, and the fixing member of the second support member extends toward a side away from the second support member.

[0013] In an optional embodiment of the present application, the first sub-support member and the second sub-support member are respectively provided with an overlapping portion at one end close to the reinforcement portion.

[0014] In an optional embodiment of the present application, the overlapping portion protrudes from the supporting body and extends toward the second supporting member, wherein there is a height difference between a surface of the overlapping portion away from the second supporting member and a surface of the first sub-support member and the second sub-support member away from the second supporting member.

[0015] In an optional embodiment of the present application, the reinforcement assembly further includes a reinforcing member, and both ends of the reinforcing member are respectively located on the overlapping portions of the first sub-support member and the second sub-support member.

[0016] In an optional embodiment of the present application, the length of the second support member is 118mm-134mm; and / or the length of the third support member is 15mm-25mm; and / or the height difference between the first reinforcement member and the second reinforcement member is 37mm-47mm; and / or the length of the reinforcement member is 53mm-64mm; and / or the length of the fixing member is 18mm-23mm.

[0017] In an optional embodiment of the present application, the third support member has corners at both ends connected to the first support member and the second support member; and / or the third reinforcement member has corners at both ends connected to the first reinforcement member and the second reinforcement member; and / or the first reinforcement member and the second reinforcement member have corners at one end connected to the first sub-support member and the second sub-support member respectively; and / or the first support member and the second support member have corners at one end connected to the fixing member respectively.

[0018] In an optional embodiment of the present application, each of the corners is rounded, and the radius of the rounded corner is 1.2 mm-3.2 mm.

[0019] In an optional embodiment of the present application, the reinforcement components are integrally formed and connected.

[0020] In a second aspect, in an optional embodiment of the present application, the present application further provides a battery module, comprising a core pack and a shell, wherein the core pack is located in the shell; the core pack comprises a plurality of battery cells, and the plurality of battery cells are arranged along a first direction; the battery module further comprises: a reinforcing assembly as described above, wherein the reinforcing assembly is located between the shell and the core pack, and the reinforcing assembly and the core pack are arranged in the first direction. Beneficial effects

[0021] The beneficial effects of this application are as follows: the reinforcement assembly includes a first support member and a second support member, the first support member includes a support body and a reinforcement portion, the reinforcement portion protrudes from the support body and extends toward the second support member to support the second support member, and the reinforcement portion increases the strength between the first and second support members. The battery module includes the reinforcement assembly, which is located between the battery cell and the housing to resist the force of battery expansion and protect the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of a reinforcement assembly provided in one embodiment of the present application.

[0023] FIG2 is another schematic structural diagram of a reinforcement assembly provided in an embodiment of the present application.

[0024] FIG3 is another structural schematic diagram of a reinforcement assembly provided in an embodiment of the present application.

[0025] FIG4 is a perspective view of a reinforcement assembly provided in one embodiment of the present application.

[0026] FIG5 is a schematic structural diagram of a battery module provided in one embodiment of the present application.

[0027] Description of reference numerals:

[0028] 100. Reinforcement assembly; 200. Battery module; 10. First support member; 11. Support body; 111. First sub-support member; 112. Second sub-support member; 12. Reinforcement portion; 121. First reinforcement member; 122. Second reinforcement member; 123. Third reinforcement member; 20. Second support member; 30. Third support member; 40. Fixing member; 50. Overlap portion; 60. Reinforcement member; 70. Shell; 80. Core package; 90. Fillet. Modes for Carrying Out the Invention

[0029] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0032] Referring to Figures 1 to 5 , the present application provides a reinforcement assembly 100, including:

[0033] The first support member 10 and the second support member 20 , the first support member 10 includes a support body 11 and a reinforcement portion 12 , the reinforcement portion 12 protrudes from the support body 11 and extends to the second support member 20 to connect the second support member 20 , thereby improving the strength of the reinforcement assembly 100 .

[0034] Specifically, the support body 11 can be relatively parallel to the second support member 20, or can be relatively inclined. In the embodiment of the present application, the connection angle between the support body 11 and the second support member 20 is not limited.

[0035] Furthermore, one end of the support body 11 can be connected to one end of the second support member 20, for example, or one end of the support body 11 can be not connected to one end of the second support member 20 and be at a certain distance. The specific connection method is not limited in the embodiments of the present application and is subject to actual application.

[0036] Specifically, when one end of the support body 11 and one end of the second support member 20 are connected to each other, the angle between the support body 11 and the second support member 20 is an acute angle, and the reinforcing portion 12 adaptively changes its shape according to the angle between the support body 11 and the second support member 20, and protrudes toward one side of the second support member 20 and supports the second support member 20; when one end of the support body 11 and one end of the second support member 20 are not connected and relatively parallel to each other, the reinforcing portion 12 adaptively changes its shape according to the angle between the support body 11 and the second support member 20, and protrudes toward one side of the second support member 20 and supports the second support member 20.

[0037] In an optional embodiment of the present application, the support body 11 includes a first sub-support member 111 and a second sub-support member 112, and the first sub-support member 111 and the second sub-support member 112 are located on the same side of the second support member 20, wherein one of the first sub-support member 111 and the second sub-support member 112 is connected to one end of the reinforcement portion 12 away from the second support member 20, and the other is connected to the other end of the reinforcement portion 12 away from the second support member 20.

[0038] Specifically, the first sub-support member 111 and the second sub-support member 112 are located on the same straight line and on the same side of the second support member 20, the first sub-support member 111 and the second sub-support member 112 are relatively parallel to the second support member 20, and the two ends of the reinforcing portion 12 are respectively connected to the first sub-support member 111 and the second sub-support member 112, and are located between the support body 11 and the second support member 20.

[0039] In an optional embodiment of the present application, the reinforcing portion 12 includes a first reinforcing member 121 and a second reinforcing member 122 , one end of the first reinforcing member 121 is connected to the second supporting member 20 , and the other end is connected to one of the first sub-support member 111 and the second sub-support member 112 ;

[0040] One end of the second reinforcement member 122 is connected to the second support member 20 , and the other end is connected to the other of the first sub-support member 111 and the second sub-support member 112 .

[0041] Specifically, the first reinforcement member 121 and the second reinforcement member 122 are relatively parallel and located between the first support member 10 and the second support member 20 , playing a supporting role and improving the strength of the reinforcement assembly.

[0042] Please refer to Figure 2. In an optional embodiment of the present application, the reinforcement portion 12 includes a third reinforcement member 123, and the two ends of the third reinforcement member 123 are respectively connected to the first reinforcement member 121 and the second reinforcement member 122 to form the reinforcement portion 12, wherein the third reinforcement member 123 is connected to the second support member 20.

[0043] Specifically, the reinforcing portion 12 is a rectangle with an opening on one side, and the opening passes through one side of the first support member 10, but is not limited to this. The shape of the reinforcing portion 12 can be adaptively changed according to the distance between the first support member 10 and the second support member 20 and the connection method. For example, when one end of the first support member 10 and the second support member 20 are connected, the reinforcing portion 12 can be adaptively changed into other polygons, which shall be subject to actual application.

[0044] Specifically, the two ends of the third reinforcement 123 are respectively vertically connected to one end of the first reinforcement 121 and the second reinforcement 122, and the ends of the first reinforcement 121 and the second reinforcement 122 away from the third reinforcement 123 are vertically connected to the first sub-support member 111 and the second sub-support member 112, but is not limited to this.

[0045] Specifically, the first reinforcement 121 and the second reinforcement 122 are relatively parallel, and the first reinforcement 121 and the second reinforcement 122 are respectively perpendicular to the first sub-support 111, the second sub-support 112 and the second support 20. The first reinforcement 121 and the second reinforcement 122 serve as internal ribs between the first support 10 and the second support 20 to provide lateral anti-extrusion capability.

[0046] In an optional embodiment of the present application, the reinforcement assembly further includes a third support member 30 , and two ends of the third support member 30 are respectively connected to the first support member 10 and the second support member 20 .

[0047] Specifically, the third support member 30 is relatively parallel to the first reinforcement member 121 and the second reinforcement member 122, and the two ends of the third support member 30 are vertically connected to the first support member 10 and the second support member 20. In the embodiment of the present application, the connection angle between the third support member 30 and the first support member 10 and the second support member 20 is not limited. The third support member 30 can also be connected to the first support member 10 and the second support member 20 at an acute angle, which shall be subject to actual application.

[0048] Specifically, a space for installing a rivet nut is provided on a side of the third support member 30 away from the fixing member 40 .

[0049] In an optional embodiment of the present application, a fixing member 40 is further provided at one end of the first support member 10 and the second support member 20 away from the third support member 30. The fixing member 40 of the first support member 10 extends toward a side away from the first support member 10, and the fixing member 40 of the second support member 20 extends toward a side away from the second support member 20.

[0050] Specifically, the fixing member 40 is vertically connected to the first support member 10 and the second support member 20 at one end away from the third support member 30. The length of the fixing member 40 is 18.8 mm and is used for resistance spot welding with the bottom of the shell 70 to reduce welding costs. The specific size is not limited to this.

[0051] Please refer to FIG. 3 . In an optional embodiment of the present application, a lap portion 50 is further provided on one end of the first sub-support member 111 and the second sub-support member 112 close to the reinforcing portion 12 .

[0052] Specifically, the overlap portion 50 is recessed toward one side of the second sub-support member 112 , and its recessed height is equal to the thickness of the reinforcing member 60 . However, the overlap portion 50 is not limited to being recessed toward one side of the second sub-support member 112 , and the specific configuration shall be subject to actual application.

[0053] In an optional embodiment of the present application, the overlapping portion 50 protrudes from the supporting body 11 and extends toward the second support member 20, wherein there is a height difference between a surface of the overlapping portion 50 away from the second support member 20 and a surface of the first sub-support member 111 and the second sub-support member 112 away from the second support member 20, and the height difference is, for example, 1 mm, and the thickness of the reinforcement 60 is 1 mm. When the reinforcement 60 overlaps with the overlapping portion 50, a surface of the reinforcement 60 away from the second support member 20 is flush with a surface of the first sub-support member 111 and the second sub-support member 112 away from the second support member 20.

[0054] In an optional embodiment of the present application, the reinforcement assembly further includes a reinforcing member 60 , and both ends of the reinforcing member 60 are respectively connected to the overlapping portions 50 of the first sub-support member 111 and the second sub-support member 112 .

[0055] Specifically, the reinforcing member 60 is used to seal the open side of the reinforcement portion 12, further enhancing the strength of the reinforcement assembly 100. The length of the reinforcing member 60 is greater than that of the third reinforcement member 123. For example, the length of the reinforcing member 60 is 58.91 mm, while the length of the third reinforcement member 123 is 42.9 mm. Alternatively, the length of the reinforcing member 60 can be equal to that of the third reinforcement member 123, as long as the reinforcing member 60 seals the open side of the reinforcement portion 12. The reinforcing member 60 is connected to the open side of the reinforcement portion 12, for example, by welding or riveting, forming a closed cross-section. This structure resists core pack expansion and enhances the strength of the reinforcement assembly.

[0056] In an optional embodiment of the present application, the length of the second support member 20 is 118mm-134mm; and / or the length of the third support member 30 is 15mm-25mm; and / or the height difference between the first reinforcement member 121 and the second reinforcement member 122 is 37mm-47mm; and / or the length of the reinforcement member 60 is 53mm-64mm; and / or the length of the fixing member 40 is 18mm-23mm, but is not limited thereto.

[0057] Exemplarily, the thickness of all components in the reinforcement assembly 100 is 1 mm, the length of the third support member 30 can be, for example, 20 mm, and the length of the second support member 20 can be, for example, 123.9 mm, wherein the height of the third support member 30 from the first reinforcement member 121 can be 36 mm, and the height of the first reinforcement member 121 from the second reinforcement member 122 can be, for example, 42 mm, wherein the corners at both ends of the third support member 30 connecting with the first support member 10 and the second support member 20, the corners at both ends of the third reinforcement member 123 connecting with the first reinforcement member 121 and the second reinforcement member 122, the corners at which the first reinforcement member 121 and the second reinforcement member 122 connect with the first sub-support member 111 and the second sub-support member 112, and the corners at which the first support member 10 and the second support member 20 connect with the fixing member 40 are all provided with rounded corners 90.

[0058] In an optional embodiment of the present application, the radius of the fillet 90 can also be 1.2 mm-3.2 mm. The specific size can be adaptively changed according to actual application.

[0059] Specifically, in the above-mentioned embodiment, the length of the third support member 30 can be, for example, 20 mm, and the length of the second support member 20 can be, for example, 123.9 mm, wherein the height of the third support member 30 from the first reinforcement member 121 can be 36 mm, and the height of the first reinforcement member 121 from the second reinforcement member 122 can be, for example, 42 mm, each fillet 90 can be, for example, 2.2 mm, which shall be subject to actual application.

[0060] In an optional embodiment of the present application, the reinforcement component 100 is integrally formed and connected using a roll-pressing process.

[0061] Specifically, the material of the reinforcement component 100 is steel. Compared with aluminum, the use of steel not only reduces material costs but also improves the strength of the reinforcement component 100, but is not limited thereto.

[0062] Please refer to Figure 5. On the second aspect, in another optional embodiment of the present application, a battery module 200 is further provided, including a core pack 80 and a shell 70, wherein the core pack 80 is located in the shell 70; the core pack 80 includes a plurality of battery cells, and the plurality of battery cells are arranged along a first direction; the battery module also includes: the above-mentioned reinforcement component 100, wherein the reinforcement component 100 is located between the shell 70 and the core pack 80, and the reinforcement component 100 and the core pack 80 are arranged in the first direction.

[0063] Specifically, the reinforcement assembly 100 is arranged on both sides of the core package 80 in the first direction, and an expansion space is reserved between the side of the second support member 20 away from the first support member 10 and the core package 80 to prevent the core package 80 from damaging the anti-corrosion protective layer on the shell 70 after expanding along the first direction, wherein the expansion space can be, for example, 3 mm, but is not limited thereto.

[0064] Specifically, an insulating plate is further provided on a side of the core package 80 adjacent to the second support member 20. The fixing member 40 of the reinforcement assembly 100 can be, for example, resistance spot welded to the bottom of the housing 70 to reduce the welding area and minimize damage to the anti-corrosion protective layer, thereby protecting the anti-corrosion protective layer of the box. The anti-corrosion protective layer can be, for example, a galvanized anti-corrosion layer, but is not limited thereto.

[0065] The reinforcement assembly and battery module provided in this application include at least the following working processes or principles: the reinforcement assembly 100 includes a first support member 10 and a second support member 20. The first support member 10 includes a support body 11 and a reinforcement portion 12. The reinforcement portion 12 protrudes from the support body 11 and extends toward the second support member 20 to support the second support member 20. The reinforcement portion is connected to the second support member and supports the second support member, thereby improving the strength of the reinforcement assembly 100 and providing lateral pressure resistance. The reinforcement assembly 100 is provided on both sides of the core pack 80 along the first direction. The bottom of the reinforcement assembly 100 is resistance spot welded to the bottom of the shell 70, reducing welding costs, protecting the anti-corrosion protective layer of the shell 70, and providing lateral pressure resistance to the expansion of the core pack 80.

Claims

1. A reinforcement assembly comprising: A first support member (10) and a second support member (20), wherein the first support member (10) comprises a support body (11) and a reinforcement portion (12), wherein the reinforcement portion (12) protrudes from the support body (11) and extends toward the second support member (20) to connect the second support member (20).

2. The reinforcement assembly according to claim 1, wherein: The support body (11) comprises a first sub-support member (111) and a second sub-support member (112), wherein the first sub-support member (111) and the second sub-support member (112) are located on the same side of the second support member (20), wherein one of the first sub-support member (111) and the second sub-support member (112) is connected to one end of the reinforcing portion (12) away from the second support member (20), and the other is connected to the other end of the reinforcing portion (12) away from the second support member (20).

3. The reinforcement assembly according to claim 2, wherein: The reinforcing portion (12) comprises a first reinforcing member (121) and a second reinforcing member (122); one end of the first reinforcing member (121) is connected to the second supporting member (20), and the other end is connected to one of the first sub-support member (111) and the second sub-support member (112); One end of the second reinforcement member (122) is connected to the second support member (20), and the other end is connected to the other of the first sub-support member (111) and the second sub-support member (112).

4. The reinforcement assembly according to claim 3, wherein: The reinforcement portion (12) further comprises a third reinforcement member (123), two ends of the third reinforcement member (123) respectively connecting the first reinforcement member (121) and the second reinforcement member (122) to form the reinforcement portion (12), wherein the third reinforcement member (123) is connected to the second support member (20).

5. The reinforcement assembly according to claim 4, wherein: The reinforcement assembly further comprises a third support member (30), and two ends of the third support member (30) are respectively connected to the first support member (10) and the second support member (20).

6. The reinforcement assembly according to claim 5, wherein: A fixing member (40) is further provided at one end of the first support member (10) and the second support member (20) away from the third support member (30); the fixing member (40) of the first support member (10) extends towards a side away from the first support member (10), and the fixing member (40) of the second support member (20) extends towards a side away from the second support member (20).

7. The reinforcement assembly of claim 6, wherein: The first sub-support member (111) and the second sub-support member (112) are respectively provided with an overlap portion (50) at one end close to the reinforcement portion (12).

8. The reinforcement assembly of claim 7, wherein: The overlapping portion (50) protrudes from the supporting body (11) and extends toward the second supporting member (20), wherein a height difference exists between a surface of the overlapping portion (50) away from the second supporting member (20) and a surface of the first sub-support member (111) and the second sub-support member (112) away from the second supporting member (20).

9. The reinforcement assembly of claim 8, wherein: The reinforcement assembly further comprises a reinforcing piece (60), wherein two ends of the reinforcing piece (60) are respectively located on the overlapping portions (50) of the first sub-support piece (111) and the second sub-support piece (112).

10. The reinforcement assembly of claim 9, wherein: The length of the second support member (20) is 118 mm-134 mm; and / or the length of the third support member (30) is 15 mm-25 mm; and / or the height difference between the first reinforcement member (121) and the second reinforcement member (122) is 37 mm-47 mm; and / or the length of the reinforcing member (60) is 53 mm-64 mm; and / or the length of the fixing member (40) is 18 mm-23 mm.

11. The reinforcement assembly of claim 9, wherein: The third support member (30) has corners at both ends where it is connected to the first support member (10) and the second support member (20); and / or the third reinforcement member (123) has corners at both ends where it is connected to the first reinforcement member (121) and the second reinforcement member (122); and / or the first reinforcement member (121) and the second reinforcement member (122) have corners at one end where they are respectively connected to the first sub-support member (111) and the second sub-support member (112); and / or the first support member (10) and the second support member (20) have corners at one end where they are respectively connected to the fixing member (40).

12. The reinforcement assembly of claim 11, wherein: Each of the corners is provided with a rounded corner (90), and the radius of the rounded corner (90) is 1.2 mm-3.2 mm.

13. The reinforcement assembly according to any one of claims 1 to 8, wherein: The reinforcement components (100) are integrally formed and connected.

14. A battery module, comprising a core pack (80) and a shell (70), wherein the core pack (80) is located in the shell (70); the core pack (80) comprises a plurality of battery cells, and the plurality of battery cells are arranged along a first direction; wherein: The battery module further comprises: a reinforcing assembly according to any one of claims 1 to 13, the reinforcing assembly being located between the shell (70) and the core pack (80), the reinforcing assembly and the core pack (80) being arranged in the first direction.

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