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CN-224217641-U - Battery pack and vehicle

CN224217641UCN 224217641 UCN224217641 UCN 224217641UCN-224217641-U

Abstract

The application discloses a battery pack and a vehicle, which belong to the technical field of power batteries, wherein a liquid cooling plate is used as a side plate in the battery pack to clamp and fix the battery pack, so that the side plate in the traditional battery pack is replaced, the liquid cooling plate is structurally provided with a first section and a second section which are distributed along a third direction, a runner is arranged in the first section to form heat exchange with the battery pack, so that battery monomers in the battery pack are kept at proper temperature, the second section is connected with the first section to form heat conduction with the first section, heat accumulated in the first section through heat exchange is conducted to the second section, the temperature of a part of the battery pack corresponding to the first section is close to or even close to the temperature of a part of the battery pack corresponding to the second section, the temperature equalizing effect of the battery pack is achieved, the space utilization rate in the battery pack is improved while the service life of the battery pack is prolonged, and the energy density of the whole battery pack is improved.

Inventors

  • WANG TIANFU
  • DU MENGFEI

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250506

Claims (14)

  1. 1. A battery pack having a first direction (X), a second direction (Y), and a third direction (Z) intersecting one another in pairs, the battery pack comprising: -a battery (10), said battery (10) having two sides (12) arranged opposite along said second direction (Y); The liquid cooling plate (20), the liquid cooling plate (20) extends along the first direction (X), the liquid cooling plate (20) is connected to the side face (12), the liquid cooling plate (20) comprises a first section (21) and a second section (22) which are arranged along the third direction (Z), and the first section (21) and the second section (22) both extend along the first direction (X) and are both in heat conduction connection with the side face (12); wherein a runner is arranged in the first section (21) to circulate a heat conducting medium, and the first section (21) is in heat conducting connection with the side face (12); The second section (22) is connected to the first section (21) to form a thermal conduction with the first section (21), and the second section (22) is thermally conductively connected to the side (12).
  2. 2. The battery pack according to claim 1, wherein the liquid cooling plate (20) further comprises a current collector (23), the current collector (23) is connected to the first section (21), and the current collector (23) and the second section (22) are arranged along the third direction (Z).
  3. 3. The battery pack according to claim 1, further comprising a first glue layer (30), said first section (21) being adhesively connected to the adjacent side (12) by means of said first glue layer (30); A gap exists between the second section (22) and the adjacent side surface (12), or the second section (22) and the adjacent side surface (12) are connected through the first adhesive layer (30) in an adhesive mode.
  4. 4. The battery pack according to claim 1, wherein the first section (21) and the second section (22) are integrally formed, a chamber (221) is provided in the second section (22), the chamber (221) extends along the first direction (X), the chamber (221) is isolated from the flow channel, or the first section (21) and the second section (22) are integrally formed, and the second section (22) is solid.
  5. 5. The battery pack according to claim 1, further comprising a case (60) and a cross member (80), the case (60) having a receiving chamber; The battery pack (10) and the cross beam (80) are both arranged in the accommodating cavity, the cross beam (80) is connected with the box body (60), the battery pack (10) comprises two end faces (13) which are oppositely arranged along the first direction (X), and at least one end face (13) is connected with the cross beam (80).
  6. 6. The battery pack of claim 5, further comprising a heat shield (40); Along the first direction (X), the battery pack (10) comprises a plurality of battery cells (11), and the heat insulation plate (40) is arranged between two adjacent battery cells (11); The heat shield (40) comprises a first surface (41) and a second surface (42) arranged opposite along the first direction (X); At least one of the first surface (41) and the second surface (42) is provided with a first groove (43), the first groove (43) is concavely extended from one of the first surface (41) and the second surface (42) to the other, the front projection of the battery cell (11) covers the front projection of the first groove (43) on the plane perpendicular to the first direction (X) along the first direction (X).
  7. 7. The battery pack according to claim 5, further comprising an insulating plate (50), wherein the insulating plate (50) is abutted between the cross beam (80) and the end face (13), a second groove (51) is provided in one face of the insulating plate (50) facing the battery pack (10) in the first direction (X), and the second groove (51) is provided opposite to the end face (13) along the first direction (X).
  8. 8. The battery pack according to claim 6, wherein the battery cell (11) includes a first side wall (111) and a second side wall (112) disposed opposite to each other in the first direction (X), a third side wall (113) and a fourth side wall (114) disposed opposite to each other in the second direction (Y), and a bottom wall (115) and a top wall (116) disposed opposite to each other in the third direction (Z), the first side wall (111), the third side wall (113), the second side wall (112), and the fourth side wall (114) enclosing a case having both ends open in the third direction (Z), the bottom wall (115) and the top wall (116) respectively covering both ends open in the third direction (Z) of the case; The first side wall (111) and the second side wall (112) are side walls with the largest surface area; In the first direction (X), the first surface (41) is connected to a first side wall (111) or the second side wall (112) adjacent to the battery cell (11), and the second surface (42) is connected to the second side wall (112) or the first side wall (111) adjacent to the battery cell (11); in the second direction (Y), the third side wall (113) and the fourth side wall (114) are respectively in heat conduction connection with the adjacent liquid cooling plates (20).
  9. 9. The battery pack according to claim 1, wherein the maximum dimension of the side face (12) is H 3 mm, the maximum dimension of the first section (21) is H 1 mm, and the maximum dimension of the second section (22) is H 2 mm in the third direction (Z), satisfying 0.1≤H 2 /H 3 ≤0.5,H 1 ＞H 2 .
  10. 10. The battery pack according to claim 1, wherein the maximum dimension of the first section (21) is greater than the maximum dimension of the battery pack (10) in the first direction (X), and/or wherein the maximum dimension of the first section (21) is greater than the maximum dimension of the second section (22) in the first direction (X).
  11. 11. A battery pack according to claim 1, wherein the largest dimension of the second section (22) is smaller than the largest dimension of the first section (21) in the two directions (Y).
  12. 12. The battery pack according to claim 5, wherein the liquid cooling plate (20) is disposed in the accommodating chamber, the first section (21) penetrates the cross beam (80) along the first direction (X), and the second section (22) is disposed on a side of the cross beam (80) close to the battery pack (10).
  13. 13. The battery pack according to claim 5, wherein the liquid cooling plate (20) is disposed in the receiving chamber, and the second section (22) is connected to the case (60) and/or the cross member (80).
  14. 14. A vehicle comprising a battery pack according to any one of claims 1 to 13.

Description

Battery pack and vehicle Technical Field The application relates to the technical field of power batteries, in particular to a battery pack and a vehicle. Background In the existing battery pack, according to the different shapes of used battery monomers, the structures of battery packs in the battery packs are different, and the battery packs in the traditional battery packs are generally provided with insulating plates, side plates and other parts to improve the overall strength of the battery packs, but due to the fact that the structural parts are more, the space utilization rate in the box body of the battery pack is reduced, and the energy density of the battery pack is affected. Disclosure of utility model The application aims to provide a battery pack and a vehicle, which are used for solving the problem that the space utilization rate in the box body of the battery pack is reduced at present. The first aspect of the embodiment of the application provides a battery pack, which is provided with a first direction, a second direction and a third direction which are intersected in pairs, wherein the battery pack comprises a battery pack, the battery pack is provided with two side faces which are oppositely arranged along the second direction, a liquid cooling plate extends along the first direction and is connected with the side faces, the liquid cooling plate comprises a first section and a second section which are distributed along the third direction, the first section and the second section both extend along the first direction and are in heat conduction connection with the side faces, a runner is arranged in the first section so as to enable a heat conduction medium to flow, the first section is in heat conduction connection with the side faces, the second section is connected with the first section so as to form heat conduction with the first section, and the second section is in heat conduction connection with the side faces. A second aspect of an embodiment of the application provides a vehicle comprising a battery pack as described above. In summary, the embodiment of the application provides a battery pack and a vehicle with the battery pack, the battery pack uses a liquid cooling plate as a side plate in the battery pack to clamp and fix the battery pack, thereby replacing the side plate in the traditional battery pack, the structure of the liquid cooling plate is arranged into a first section and a second section which are distributed along a third direction, a runner is arranged in the first section to form heat exchange with the battery pack, so that battery cells in the battery pack are kept at a proper temperature, the second section is connected with the first section to form heat conduction with the first section, so that the heat exchange area is increased by the second section, the heat of the battery pack is conducted to the first section by the second section, and the heat is dissipated through a heat conducting medium in the runner, so that the temperature of a part of the battery pack corresponding to the first section is close to or even close to the temperature of a part of the battery pack corresponding to the second section, the even temperature equalizing effect of the battery pack is achieved, the service life of the battery pack is prolonged, and meanwhile, the space waste generated between the battery pack and the liquid cooling plate is avoided, and therefore the space utilization rate in the battery pack can be improved. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic view of a battery pack according to an embodiment of the present application; Fig. 2 is a schematic view of a first angle structure of a combination of a liquid cooling plate and a battery pack in a battery pack according to an embodiment of the present application; FIG. 3 is a top view of FIG. 2; FIG. 4 is an exploded view of FIG. 2; Fig. 5 is a schematic view of a second angle structure of a combination of a liquid cooling plate and a battery pack in a battery pack according to an embodiment of the present application; FIG. 6 is an enlarged schematic view of the structure at A of FIG. 5; FIG. 7 is a B-B cross-sectional view of FIG. 1; FIG. 8 is an enlarged schematic view of the structure at C of FIG. 7; Fig. 9 is a schematic structural diagram of a first battery cell in a battery pack according to an embodiment of the present application; Fig. 10 is a schematic view of a separator in a battery pack according to an embodiment of the present application; FIG. 11 is a D-D sectional