CN-121983725-A - Battery pack and vehicle

CN121983725ACN 121983725 ACN121983725 ACN 121983725ACN-121983725-A

Abstract

The application provides a battery pack and a vehicle, wherein the battery pack comprises a battery core module, a box body and a buffer limiting plate, the battery core module comprises a plurality of battery cores which are stacked along a first direction, a containing cavity for containing the battery core module is formed in the box body, a plurality of groups of battery core modules are arranged in the containing cavity along a second direction, the buffer limiting plate comprises a buffer layer and a limiting layer which are stacked along the first direction, the buffer limiting plate is arranged along the second direction, the hardness of the limiting layer is larger than that of the buffer layer, the buffer limiting plate is positioned in a gap between two adjacent battery cores of at least two groups of battery core modules, and the buffer limiting plate is connected with the battery cores arranged on two sides of the buffer limiting plate. The battery pack is characterized in that the battery pack is provided with a buffer limiting plate, the buffer limiting plate is arranged on the buffer limiting plate, and the buffer limiting plate is arranged on the buffer limiting plate.

Inventors

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Assignees

晶核能源(嘉兴)有限公司

Dates

Publication Date: 20260505
Application Date: 20251215

Claims (10)

1. A battery pack, comprising: The battery cell module comprises a plurality of battery cells which are stacked along a first direction; The box body forms a containing cavity for containing the battery cell modules, and a plurality of groups of battery cell modules are arranged in the containing cavity along a second direction; the buffer limiting plate comprises a buffer layer and a limiting layer which are stacked along the first direction, and the buffer limiting plate is arranged along the second direction; The hardness of the limiting layer is greater than that of the buffer layer, the buffer limiting plates are located in gaps between two adjacent cells of at least two groups of cell modules, and the buffer limiting plates are connected with the cells arranged on two sides of the buffer limiting plates.
2. The battery pack according to claim 1, further comprising a buffer plate disposed in the second direction and disposed in a gap between adjacent two of the cells, and the buffer limiting plate and the buffer plate are disposed in the first direction in a circulation in the gap between adjacent cells.
3. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells, The buffer limiting plate is arranged in the gap between the adjacent two cells of all the cell modules and/or, The buffer plate is arranged in the gap between every two adjacent cells of the cell module.
4. The battery pack according to claim 2, wherein the buffer stopper plate includes at least two stopper layers, the at least two stopper layers being located on both sides of the buffer layer in the first direction, respectively.
5. The battery pack of claim 4, wherein the buffer layer comprises: an elastic frame portion disposed along the second direction, the elastic frame portion forming a plurality of mounting cavities; the buffer parts are provided with a plurality of buffer parts and are respectively arranged in the mounting cavities; and the packaging part is packaged on the periphery side of the elastic frame part so as to fix the buffer part.
6. The battery pack of claim 2, further comprising a limiting plate disposed along the first direction, the limiting plate disposed in a gap between adjacent ones of the cell modules, and the limiting plate being connected to the cells on both sides of the limiting plate.
7. The battery pack of claim 6, wherein the limit plate is connected or integrally formed with the buffer limit plate and/or the limit plate is connected or integrally formed with the buffer plate.
8. The battery pack according to claim 2, wherein the buffer stop plate is provided with a stop projection projecting in the first direction, and the stop projection extends into a gap between adjacent cell modules.
9. The battery pack according to claim 1, wherein the buffer limiting plate comprises a buffer layer and a limiting layer arranged on one side of the buffer layer in the first direction, and the buffer limiting plate is arranged between any two adjacent electric cores of the electric core module.
10. A vehicle comprising a battery pack according to any one of claims 1-9.

Description

Battery pack and vehicle Technical Field The application relates to the technical field of vehicles, in particular to a battery pack and a vehicle. Background The development of new energy vehicles places higher demands on the battery packs of the new energy vehicles. The battery package of vehicle among the prior art generally includes the box and sets up in crossbeam and the longeron of box, and electric mandrel group sets up between crossbeam and longeron, and crossbeam and longeron can promote the structural strength of battery package. However, the provision of the cross members and the side members within the battery pack occupies the space of the battery cells, resulting in a reduction in the energy density of the battery pack. Disclosure of Invention In view of the above, the present application provides a battery pack to solve the problem of low energy density of the battery pack while ensuring structural strength of the battery pack. The application further provides a vehicle comprising the battery pack. In order to achieve the above purpose, the present application provides the following technical solutions: A battery pack, comprising: The battery cell module comprises a plurality of battery cells which are stacked along a first direction; The box body forms a containing cavity for containing the battery cell modules, and a plurality of groups of battery cell modules are arranged in the containing cavity along a second direction; the buffer limiting plate comprises a buffer layer and a limiting layer which are stacked along the first direction, and the buffer limiting plate is arranged along the second direction; The hardness of the limiting layer is greater than that of the buffer layer, the buffer limiting plates are located in gaps between two adjacent cells of at least two groups of cell modules, and the buffer limiting plates are connected with the cells arranged on two sides of the buffer limiting plates. Optionally, the battery cell assembly further comprises a buffer plate arranged along the second direction and arranged in a gap between two adjacent battery cells, and the buffer limiting plate and the buffer plate are circularly arranged in the gap between the adjacent battery cells in the first direction. Alternatively to this, the method may comprise, The buffer limiting plate is arranged in the gap between the adjacent two cells of all the cell modules and/or, The buffer plate is arranged in the gap between every two adjacent cells of the cell module. Optionally, the buffer limiting plate includes at least two limiting layers, and the at least two limiting layers are respectively located at two sides of the buffer layer in the first direction. Optionally, the buffer layer includes: an elastic frame portion disposed along the second direction, the elastic frame portion forming a plurality of mounting cavities; the buffer parts are provided with a plurality of buffer parts and are respectively arranged in the mounting cavities; and the packaging part is packaged on the periphery side of the elastic frame part so as to fix the buffer part. Optionally, the battery cell assembly further comprises a limiting plate arranged along the first direction, wherein the limiting plate is arranged in a gap between adjacent battery cell modules, and the limiting plate is connected with the battery cells positioned on two sides of the limiting plate. Optionally, the limiting plate is connected with or integrally formed with the buffering limiting plate, and/or the limiting plate is connected with or integrally formed with the buffering plate. Optionally, the buffer limiting plate is provided with a limiting protrusion protruding towards the first direction, and the limiting protrusion extends into a gap between adjacent cell modules. Optionally, the buffer limiting plate includes the buffer layer and set up in the buffer layer is in the spacing layer of first direction one side, any adjacent two of electric core module all set up between the electric core the buffer limiting plate. A vehicle comprising the battery pack of any one of the above. The battery pack comprises battery cell modules, a box body and a buffer limiting plate, wherein the buffer limiting plate comprises a buffer layer and a limiting layer which are stacked along a first direction, the buffer limiting plate is arranged along a second direction and is positioned in a gap between two adjacent battery cells of at least two groups of battery cell modules, and the buffer limiting plate is connected with the battery cells arranged on two sides of the buffer limiting plate. That is, the buffer limiting plate is arranged in a gap between two adjacent cells of at least two groups of cell modules, and the limiting buffer plate is connected with the cells positioned on two sides of the limiting buffer plate. On the other hand, the limiting layer of the limiting buffer plate is connected with the electric cores of the electric core modules, and