The present disclosure relates to the technical field of batteries, in particular to a battery module outer frame, a battery module, and a battery pack.
With the development of power battery systems and the increase in energy density, the battery systems are integrated in the form of large modules and cell to pack (CTP) to improve the overall vehicle range and reduce costs. An outer frame of the battery module is generally formed by enclosing the left and right side plates and the front and rear end plates together. When manufacturing the side plate, it is usually necessary to punch out the side plate body and the hanger by using the side plate body stamping die and the hanger stamping die, respectively, and then the hanger is welded to the side plate body. The manufacturing process of the side plate is complicated, and the deformation between the side plate body and the hanger is easy to occur.
With the development of technology, in order to facilitate the processing of the side plate, the side plate body is usually bent to form the hanger, but this processing method cannot meet the processing of complex hanger structures, and also reduces the structural strength of the side plate.
Therefore, there is an urgent need for a battery module outer frame, a battery module, and a battery pack to solve the above problems.
The present disclosure provides a battery module outer frame, a battery module, and a battery pack to solve the above technical problems.
In a first aspect, the present disclosure provides a battery module outer frame, including:
In a second aspect, the present disclosure provides a battery module including a module body and the battery module outer frame as described above, and the module body is fixed in the battery module outer frame.
In a third aspect, the present disclosure provides a battery pack including a box and the battery module as described above, and the battery module is disposed in the box.
The beneficial effects of the present disclosure are as follows:
A battery module outer frame provided by the present disclosure includes a side plate and an end plate. The side plate extends along a first direction. The side plate includes a side plate body and a hanger. The side plate body and the hanger are integrally roll formed. The end plate extends along a second direction. The end plate and the side plate body are connected by laser welding. The first direction is perpendicular to the second direction. Since the side plate body and the hanger are integrally roll formed, the processing of the complex hanger is satisfied, and the structural strength of the whole side plate is improved. The processing is convenient, and the manufacturing cost of the side plate is reduced. The end plate and the side plate body can be connected by laser welding without laser filling welding, so that the welding process between the end plate and the side plate body is simple, and the manufacturing cost of the whole battery module outer frame is reduced.
In the battery module provided by the present disclosure, by applying the battery module outer frame, the processing process of the battery module is simplified and the manufacturing cost of the battery module is reduced.
In the battery pack provided by the present disclosure, by applying the battery module, the processing process of the battery pack is simplified and the manufacturing cost of the battery pack is reduced.
100, battery module; 200, liquid cooling plate; 300, box; 310, cross beam; 10, battery module outer frame; 1, side plate; 11 side plate body; 12, hanger; 2, end plate; 3, hot-pressed insulating film; 4, middle plate; 5, upper cover; 20, module body; 30, thermally conductive structural adhesive; 40, limiting member; 50, connecting structural adhesive.
As shown in
In order to ensure the normal operation of the battery module 100, the battery pack disclosed in the embodiments further includes a liquid cooling plate 200. The liquid cooling plate 200 is disposed at a bottom of the box 300. A bottom of the battery module 100 is disposed on the liquid cooling plate 200. The liquid cooling plate 200 dissipates and cools the battery module 100 by liquid cooling to ensure the normal operation of the battery module 100.
As shown in
Specifically, as shown in
In the related art, when manufacturing the side plate, it is usually necessary to punch out the side plate body and the hanger by using the side plate body stamping die and the hanger stamping die, respectively, and then the hanger is welded to the side plate body. The manufacturing process of the side plate is complicated, and the deformation between the side plate body and the hanger is easy to occur. In order to facilitate the processing of the side plate, the side plate body is usually bent to form hanger, but this processing method cannot meet the processing of complex hanger structures, and also reduces the structural strength of the side plate.
In order to solve the above problems, as shown in
It should be noted that, in the embodiments, the side plate 1 is made of a 5-series aluminum alloy material, and the end plate 2 is made of a 6-series aluminum alloy material, thereby ensuring that the side plate body 11 and the end plate 2 can be connected only by laser welding. In addition, the 5-series aluminum alloy has the advantage of being lightweight.
Further, as shown in
In addition, as shown in
Further, in the embodiments, the battery module outer frame 10 further includes an upper cover 5. The upper cover 5 is buckled on the mounting frame and located on a top of the module body 20, so as to better realize the protection of the module body 20.
As shown in
Preferably, as shown in
In the embodiments, as shown in
Specifically, the limiting member 40 is a foam. The foam is bonded to the bottom of the side plate 1, and the bottom of the foam is in contact with the liquid cooling plate 200, so that the thickness of the thermally conductive structural adhesive 30 is limited by the thickness of the foam. In addition, the foam also plays a cushioning and protective role for the side plate 1.
Number | Date | Country | Kind |
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202321659485.6 | Jun 2023 | CN | national |
PCT/CN2024/077714 | Feb 2024 | WO | international |
This application is a continuation of International Application No. PCT/CN2024/077714, filed on Feb. 20, 2024, which claims priority to Chinese Patent Application No. 202321659485.6 filed on Jun. 28, 2023. The entire disclosures of the aforementioned applications are incorporated herein by reference in their entirety.
Number | Date | Country | |
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Parent | PCT/CN2024/077714 | Feb 2024 | WO |
Child | 18964263 | US |