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CN-224217683-U - Battery pack

CN224217683UCN 224217683 UCN224217683 UCN 224217683UCN-224217683-U

Abstract

The embodiment of the utility model provides a battery pack, and relates to the technical field of batteries. The battery pack comprises a box body and a battery pack, wherein the box body is provided with a containing cavity, the battery pack is arranged in the containing cavity, the battery pack comprises a plurality of battery monomers which are arranged along a first direction, two conducting bars are connected to the battery pack and are arranged along a second direction, one side of each conducting bar, which deviates from the battery pack, is provided with an insulating part, the edge of each insulating part exceeds the edge of each conducting bar, the ratio of the size of each insulating part to the size of each conducting bar is greater than or equal to 1 and less than or equal to 1.1 along the second direction. According to the battery pack provided by the embodiment of the utility model, when the insulating piece is assembled with the conducting bar, the insulating piece is not easy to wrinkle, and the assembly yield can be improved.

Inventors

  • BAI DONGYANG
  • GU LIANGJIE

Assignees

  • 中创新航科技集团股份有限公司

Dates

Publication Date
20260508
Application Date
20250604

Claims (12)

  1. 1. A battery pack, comprising: a case (10), the case (10) having a receiving chamber; a battery pack (20), the battery pack (20) being disposed in the accommodation chamber, the battery pack (20) including a plurality of battery cells (21) arranged along a first direction; The battery pack (20) is connected with two conducting bars (40), the two conducting bars (40) are arranged along a second direction, one side, away from the battery pack (20), of each conducting bar (40) is provided with an insulating piece (50), and the edge of each insulating piece (50) exceeds the edge of each conducting bar (40); Along the second direction, the insulating piece (50) has a size L1, the conductive bar (40) has a size L2, and the ratio of L1 to L2 is greater than or equal to 1 and less than or equal to 1.1, wherein the units of L1 and L2 are both mm.
  2. 2. The battery pack according to claim 1, wherein each of the conductive bars (40) includes a plurality of aluminum bars (41) distributed along the first direction, the aluminum bars (41) connecting electrode outputs (211) of two adjacent battery cells (21), and the insulating member (50) extends along the first direction.
  3. 3. The battery pack according to claim 2, wherein the insulating member (50) has a size L3, the conductive row (40) has a size L4, and a ratio of L3 to L4 is 1.02 or more and 1.15 or less in the first direction; Wherein the units of L3 and L4 are both mm.
  4. 4. The battery pack according to claim 2, wherein a distance between an edge of the insulating member (50) and an edge of the conductive row (40) in the second direction is L5, the L5 being 5mm or more and 10mm or less.
  5. 5. The battery pack according to claim 2, wherein a spacing between an edge of the insulating member (50) and an edge of the conductive row (40) in the first direction is L6, the L6 being 10mm or more and 20mm or less.
  6. 6. The battery pack according to claim 2, wherein the distance by which the edge of the insulating member (50) exceeds the end face of the battery pack (20) in the first direction is L7, the L7 being 0mm or more and 15mm or less.
  7. 7. The battery pack according to claim 2, wherein the thickness of the insulating member (50) in a direction perpendicular to the first direction and the second direction is L8, the L8 being 0.3mm or more and 1mm or less.
  8. 8. A battery pack according to claim 3, wherein the side of the insulating member (50) facing away from the conductive strip (40) is provided with foam (60), the foam (60) being glued between the insulating member (50) and the casing (10).
  9. 9. The battery pack according to claim 8, wherein the foam (60) has a size L9 in the first direction, and a ratio of L9 to L4 is 0.6 or more and 1 or less; wherein the units of L9 and L4 are both mm.
  10. 10. The battery pack according to any one of claims 1-9, wherein the side of the insulating member (50) facing away from the conductive strip (40) has a separation layer (51).
  11. 11. The battery pack according to any one of claims 1-9, further comprising a flexible circuit member extending along the first direction, a leg of the flexible circuit member being electrically connected to the conductive strip (40), and a distance of overlap of the insulating member (50) with the flexible circuit member along the second direction being greater than 0mm.
  12. 12. Battery pack according to any one of claims 1-9, wherein an intermediate beam (13) is arranged in the box (10), and the insulating member (50) is provided with a notch (501) at a position corresponding to the intermediate beam (13).

Description

Battery pack Technical Field The utility model relates to the technical field of batteries, in particular to a battery pack. Background The battery pack generally includes a case, a harness plate assembly, and a battery pack disposed in the case. The wire harness board assembly comprises a conductive bar and a flexible circuit member (Flexible Printed Circuit, FPC), wherein the conductive bar is electrically connected with the battery pack, and the flexible circuit member is electrically connected with the conductive bar, so that the voltage and the temperature of the battery pack can be collected. In the related art, the battery pack further includes an insulating film adhered to each of the conductive bars on the battery pack. However, when the insulating film is assembled, wrinkles are likely to occur, resulting in a decrease in the assembly yield. Disclosure of utility model The embodiment of the utility model provides a battery pack, which aims to solve the problem that when an insulating film is assembled, wrinkles are easy to occur, so that the assembly yield is reduced. An embodiment of the present utility model provides a battery pack including: The box body is provided with a containing cavity; The battery pack is arranged in the accommodating cavity and comprises a plurality of battery cells arranged along a first direction; The battery pack is connected with two conducting bars, the two conducting bars are arranged along a second direction, an insulating piece is arranged on one side, away from the battery pack, of each conducting bar, and the edge of each insulating piece exceeds the edge of each conducting bar; Along the second direction, the size of the insulating piece is L1, the size of the conducting bar is L2, and the ratio of L1 to L2 is more than or equal to 1 and less than or equal to 1.1, wherein the units of L1 and L2 are both mm. According to the battery pack provided by the embodiment of the utility model, the insulating piece is arranged on one side, away from the battery pack, of each conductive bar, so that the two conductive bars are correspondingly arranged on the two insulating pieces in a split mode, the area of the insulating piece is reduced, wrinkles are not easy to occur when the insulating piece is assembled with the conductive bars, and the assembly yield can be improved. If the ratio of L1 to L2 is less than 1, the insulation element will be undersized in the second direction, resulting in bare edges of the conductive bars and risk of insulation failure. If the ratio of L1 to L2 is greater than 1.1, the insulation member will be oversized along the second direction, so that the portion of the conductive bar exceeding the conductive bar is easy to tilt, and the portion of the conductive bar exceeding the conductive bar is easy to attach foreign matters. Through the ratio of restriction L1 to L2, can be so that along the second direction, the edge of conducting bar does not leak naked, reduces insulation failure's risk, can also follow the second direction, the insulating part surpasses the part of conducting bar and is difficult for perk, and difficult adhesion foreign matter. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. Fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present utility model; FIG. 2 is an internal schematic view of the lower shell of FIG. 1; Fig. 3 is a schematic diagram of assembled battery, conductive bars and insulators according to an embodiment of the present utility model; FIG. 4 is an enlarged schematic view at A in FIG. 3; FIG. 5 is a schematic cross-sectional view of a assembled battery, a conductive strip, an insulating member, and foam in a plane in the Y-direction and the Z-direction according to an embodiment of the present utility model; FIG. 6 is an enlarged schematic view at B in FIG. 5; FIG. 7 is a schematic view of the battery pack of FIG. 1 with the upper cover, foam and insulation removed; FIG. 8 is an enlarged schematic view at C in FIG. 7; Fig. 9 is a schematic view of the battery pack of fig. 1 with the upper cover removed; FIG. 10 is an enlarged schematic view at D in FIG. 9; fig. 11 is a schematic structural diagram of an insulating member according to an embodiment of the present utility model. Reference numerals illustrate: 10-box body, 11-upper cover, 12-lower shell, 121-side plate, 122-end plate, 123-bottom plate, 13-middle beam, 20-battery pack, 21-battery unit, 211-electrode output end, 30-conductive piece, 40-conductive row, 41-aluminum b