CN-224232788-U - Battery box and battery pack

Abstract

The application provides a battery box body and a battery pack, and particularly relates to the technical field of batteries. The battery box body comprises a box body frame, a plurality of lifting lugs and a plurality of patches. Wherein, a plurality of lug are connected in box frame respectively. Each patch corresponds to the lifting lug, one surface of the patch is connected with the box body frame, and the other surface of the patch is connected with the lifting lug. Like this, set up the paster with between box frame and the lug of battery box, pass through the paster and transition between box frame and lug, effectively reduce local welding stress concentration, promoted the structural strength of battery box by a wide margin.

Inventors

• Ci Zhaoxin
• QIU MENG
• XUE YULI
• LIN SHUO

Assignees

• 合肥国轩高科动力能源有限公司

Dates

Publication Date

20260512

Application Date

20250401

Claims (10)

1. 1. A battery box, comprising: A box frame; the lifting lugs are respectively connected to the box body frame; The plurality of patches, every the patch with the lug corresponds, the one side of patch with the box frame links to each other, the another side of patch with the lug links to each other.
2. 2. The battery box of claim 1, wherein an orthographic projection of the patch toward the tab covers the tab.
3. 3. The battery box according to claim 2, wherein the lifting lug includes a main body portion that is provided protruding from the box frame; The main body part is provided with a hollow cavity, and the hollow cavity is communicated with the outside.
4. 4. A battery box according to claim 3, wherein the main body portion is provided with a mounting hole for hanging the battery box.
5. 5. The battery box of claim 3 wherein the lifting lug further comprises an extension, the extension is provided on the periphery of the end of the lifting lug facing the box frame, and the extension is used for fixedly connecting with the patch.
6. 6. The battery box of any of claims 1-5, wherein the box frame has a thickness dimension in the range of 0-1mm.
7. 7. The battery compartment of any one of claims 1-5, wherein the patch has a thickness dimension in the range of 1-1.5mm.
8. 8. The battery box of any one of claims 1-5, wherein the thickness dimension of the lifting lug is greater than or equal to 2mm.
9. 9. The battery compartment of any one of claims 1-5, wherein the patch and the compartment frame are connected by laser welding.
10. 10. A battery pack, comprising: A battery module and a battery case according to any one of the preceding claims 1 to 9; the battery module is positioned in the battery box body.

Description

Battery box and battery pack Technical Field The application relates to the technical field of batteries, in particular to a battery box and a battery pack. Background With the progress of technology and the increase in demand for renewable energy sources, power batteries are widely used in various fields such as electric automobiles, renewable energy storage, consumer electronics, industrial equipment, and the like. The power battery of the new energy automobile meets the electric quantity requirement of the whole automobile through a plurality of modules connected in series or in parallel. The battery box body is used as a core part of a power battery system and is a main mode for integrating the power battery at present. In the use of battery box, usually need with battery box's lug and whole car assembly department looks adaptation. The lifting lug is strict in position and flatness, and certain strength is required. However, in the existing battery box, the battery box is usually welded by gas shielded welding so that the rectangular pipe lifting lug is connected with the box frame, and the problem of stress concentration is easily caused, so that the strength of the lifting lug is affected, and the phenomenon of lifting lug cracking frequently occurs in the vibration process. In addition, because the lifting lug is concentrated in stress, and the lifting lug is more in welding, welding deformation is easy to generate, deformation caused by welding is large, and the mounting position degree, the flatness and the like of the lifting lug are difficult to control. Disclosure of utility model The embodiment of the application provides a battery box and a battery pack. Set up the paster between box frame and the lug with the battery box, pass through the paster and carry out the transition between box frame and lug, effectively reduce local welding stress concentration, promoted the structural strength of battery box by a wide margin. A first aspect of the present application provides a battery case, comprising: A box frame; The lifting lugs are respectively connected to the box body frame; And each patch corresponds to the lifting lug, one surface of the patch is connected with the box body frame, and the other surface of the patch is connected with the lifting lug. The battery box provided by the first aspect of the embodiment of the application comprises a box frame, a plurality of lifting lugs and a plurality of patches. Wherein, a plurality of lug are connected in box frame respectively. Each patch corresponds to the lifting lug, one surface of the patch is connected with the box body frame, and the other surface of the patch is connected with the lifting lug. Like this, set up the paster with between box frame and the lug of battery box, pass through the paster and transition between box frame and lug, effectively reduce local welding stress concentration, promoted the structural strength of battery box by a wide margin. In one possible embodiment, the orthographic projection of the patch toward the lifting lug covers the lifting lug. In one possible embodiment, the lifting lug comprises a main body part, and the main body part is arranged on the box body frame in a protruding mode; the main body part has the cavity, and cavity and external world are linked together. In one possible embodiment, the main body portion is provided with a mounting hole for hanging the battery box. In one possible embodiment, the lifting lug further comprises an extension part, wherein the periphery of one end of the lifting lug, facing the box frame, is provided with the extension part, and the extension part is used for being fixedly connected with the patch. In one possible embodiment, the thickness dimension of the tank frame is in the range of 0-1mm. In one possible embodiment, the thickness dimension of the patch is in the range of 1-1.5mm. In one possible embodiment, the thickness dimension of the lifting lug is greater than or equal to 2mm. In one possible embodiment, the patch and the case frame are connected by laser welding. A second aspect of the present application provides a battery pack comprising: A battery module and the battery box; the battery module is located in the battery box. It should be understood that, the second aspect of the present application corresponds to the technical solution of the first aspect of the present application, and the advantages obtained by each aspect and the corresponding possible embodiments are similar, and are not repeated. In addition to the technical problems, features constituting the technical solutions, and advantageous effects caused by the technical features of the technical solutions described above, other technical problems that the battery case and the battery pack can solve, other technical features included in the technical solutions, and advantageous effects caused by the technical features provided by the present application will be described in further det