CN-224217539-U - Battery module

CN224217539UCN 224217539 UCN224217539 UCN 224217539UCN-224217539-U

Abstract

The utility model relates to the technical field of batteries, and discloses a battery module which is provided with a first direction, a second direction and a third direction which are intersected in pairs, wherein the battery module comprises a heat dissipation shell, a heat insulation module, a plurality of groups of battery units, a plurality of heat dissipation modules and a heat dissipation material layer, the heat insulation module is arranged in the heat dissipation shell, the heat insulation module is provided with a plurality of accommodating cavities, the accommodating cavities are respectively arranged at intervals in the second direction and the third direction, the battery units are correspondingly inserted into the accommodating cavities one by one, the two ends of the battery units in the first direction are connected with the heat dissipation modules, and the heat dissipation material layer is arranged between the heat dissipation modules and the inner wall of the heat dissipation shell. The heat insulation structure has the beneficial effects that the heat insulation structure is arranged, so that the mutual influence of the heat of the battery units is avoided, meanwhile, the whole heat dissipation of the battery module is uniform, the temperature difference inside the battery module is reduced, and the whole service life of the battery pack is prolonged.

Inventors

LU GUOKU
XIE YUANJIANG
YU XIAOTIAN

Assignees

浙江欣动能源科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250508

Claims (10)

1. The battery module is provided with a first direction, a second direction and a third direction which are intersected in pairs, and is characterized by comprising a heat dissipation shell, a heat insulation module, a plurality of groups of battery units, a plurality of heat dissipation modules and a heat dissipation material layer, wherein the heat insulation module, the plurality of groups of battery units and the plurality of heat dissipation modules are arranged in the heat dissipation shell; the battery unit extends in the first direction, a plurality of holding cavities are formed in the heat insulation module, heat dissipation openings are formed in the two ends of the holding cavities along the first direction respectively, the holding cavities are arranged at intervals in the second direction and the third direction respectively, the battery unit is inserted in the holding cavities in a one-to-one correspondence mode, the two ends of the battery unit in the first direction are connected with the heat dissipation module, and the heat dissipation module and the heat dissipation shell are provided with the heat dissipation material layer between the inner walls of the heat dissipation shells.
2. The battery module of claim 1, wherein the heat dissipation module comprises a first busbar, a first thermal conductive adhesive layer, and a first thermal conductive plate sequentially disposed away from the battery cells in the first direction; The heat insulation module comprises a heat insulation module, a first busbar, a heat dissipation material layer, a first heat conduction glue layer and a heat dissipation shell, wherein one side of the first busbar, which faces the heat insulation module, is contacted with one end of the battery unit, one side of the first busbar, which faces away from the battery unit, is coated with the first heat conduction glue layer, one side of the first heat conduction glue layer, which faces away from the first busbar, is provided with the first heat conduction plate in a laminating way, and the heat dissipation material layer is filled between the first heat conduction plate and the heat dissipation shell.
3. The battery module of claim 2, wherein a sealant layer is arranged at the bottom of the heat dissipation shell, the bottom of the first heat conduction plate is in contact with the sealant layer, two sealing plates are arranged on one side surface of the first heat conduction plate, which faces the heat dissipation shell, and two sealing plates are arranged at intervals at two ends of the side surface extending along the second direction; The first heat conducting plate, the sealing plate, the sealant layer and the side wall of the heat dissipation shell are matched to form a gap for filling the heat dissipation material layer.
4. The battery module according to claim 1, wherein the heat insulating module is a heat insulating plate, and the heat insulating plate is provided with the accommodation cavities penetrating through both sides thereof in the second direction and the third direction.
5. The battery module according to claim 1, wherein the heat insulating module comprises a plurality of ceramic tubes arranged in parallel in the second direction and the third direction, the ceramic tubes being provided with the accommodation cavities.
6. The battery module of claim 1, wherein the receiving cavity extends a length in the first direction that is less than a length of the battery cell extending in the first direction.
7. The battery module of claim 1, wherein the outer wall of the heat dissipation case is provided with heat dissipation teeth.
8. The battery module according to claim 1, wherein the battery cell includes a plurality of battery cells arranged at intervals in the first direction; The heat insulation module corresponding to the battery cells is arranged in the first direction, a heat conduction component is arranged between the adjacent battery cells, and the heat conduction component is used for transferring heat between the battery cells and the heat dissipation shell.
9. The battery module of claim 8, wherein the thermally conductive assembly comprises a second thermally conductive plate, a second thermally conductive adhesive layer, and a second bus bar; The second heat conduction plate is provided with the second heat conduction glue layers on two side surfaces of the first direction, the second bus bars are attached to the other side surfaces of the second heat conduction glue layers, and the other side surfaces of the second bus bars are in contact with one end of the battery unit in the first direction.
10. The battery module of claim 1, wherein the heat dissipation case comprises a case body and an end cover, the heat insulation module and the plurality of battery cells are all arranged in the case body, an opening is arranged at one end of the case body in the third direction, and the end cover is arranged at the opening for sealing the case body.

Description

Battery module Technical Field The utility model relates to the technical field of batteries, in particular to a battery module. Background The battery pack formed by the battery modules is used as a core component of new energy, is widely applied to electric automobiles, hybrid electric automobiles, energy storage systems and other applications requiring large capacity and high voltage, and has the advantages of high energy density, high voltage platform, long cycle life, good safety performance and the like. In order to improve the stability of the charging and discharging process of the battery pack, the heat dissipation design is carried out on the battery module, and if the heat conduction pouring sealant scheme is adopted for heat dissipation, the heat among the battery units is mutually influenced, a large heat affected area is generated, so that the heat is concentrated on the periphery of part of the battery units, and the heat is not easy to dissipate. Meanwhile, as the distribution positions of the battery units in the heat dissipation shell are different, the temperature distribution of each part in the battery module is uneven, the temperature difference inside the battery module is large, and the overall service life of the battery pack is reduced. Disclosure of utility model The utility model aims to provide the battery module, which is provided with the heat insulation structure, so that the mutual influence of heat of battery units is avoided, meanwhile, the whole heat dissipation of the battery module is uniform, the temperature difference inside the battery module is reduced, and the whole service life of the battery pack is prolonged. In order to achieve the above object, the present utility model provides a battery module having a first direction, a second direction and a third direction intersecting each other in pairs, including a heat dissipation case, and a heat insulation module, a plurality of groups of battery cells and a plurality of heat dissipation modules, and a heat dissipation material layer disposed in the heat dissipation case; the battery unit extends in the first direction, a plurality of holding cavities are formed in the heat insulation module, heat dissipation openings are formed in the two ends of the holding cavities along the first direction respectively, the holding cavities are arranged at intervals in the second direction and the third direction respectively, the battery unit is inserted in the holding cavities in a one-to-one correspondence mode, the two ends of the battery unit in the first direction are connected with the heat dissipation module, and the heat dissipation module and the heat dissipation shell are provided with the heat dissipation material layer between the inner walls of the heat dissipation shells. Further, the heat dissipation module comprises a first busbar, a first heat conduction glue layer and a first heat conduction plate which are sequentially arranged away from the battery unit in the first direction; The heat insulation module comprises a heat insulation module, a first busbar, a heat dissipation material layer, a first heat conduction glue layer and a heat dissipation shell, wherein one side of the first busbar, which faces the heat insulation module, is contacted with one end of the battery unit, one side of the first busbar, which faces away from the battery unit, is coated with the first heat conduction glue layer, one side of the first heat conduction glue layer, which faces away from the first busbar, is provided with the first heat conduction plate in a laminating way, and the heat dissipation material layer is filled between the first heat conduction plate and the heat dissipation shell. Further, a sealant layer is arranged at the bottom of the heat dissipation shell, the bottom of the first heat conduction plate is in contact with the sealant layer, two sealing plates are arranged on one side surface of the first heat conduction plate, which faces the heat dissipation shell, and the two sealing plates are arranged at intervals at two ends of the side surface extending along the second direction; The first heat conducting plate, the sealing plate, the sealant layer and the side wall of the heat dissipation shell are matched to form a gap for filling the heat dissipation material layer. Furthermore, the heat insulation module is a heat insulation plate, and the heat insulation plate is provided with accommodating cavities penetrating through two side surfaces of the heat insulation plate in the second direction and the third direction. Still further, the heat insulation module includes a plurality of ceramic pipes, a plurality of the ceramic pipes are disposed in parallel in the second direction and the third direction, and the ceramic pipes are provided with the receiving chambers. Still further, the receiving chamber extends in the first direction by a length less than a length of the battery cell extending in the first di