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EP-4742394-A1 - ASSEMBLY STRUCTURE OF BATTERY FRAME AND BATTERY PACKAGE INCLUDING THE SAME

EP4742394A1EP 4742394 A1EP4742394 A1EP 4742394A1EP-4742394-A1

Abstract

In an assembly structure of a battery frame, the assembly structure includes: a first boss portion protruding from a side edge of a first frame in which a battery cell is mounted and having an insertion hole portion formed in a direction of the side edge; a second boss portion arranged to correspond to the first boss portion on a second frame on which the first frame is seated, and having a coupling hole portion corresponding to the insertion hole portion; and a fastening member having a shaft portion passing through the insertion hole portion and the coupling hole portion, wherein an end portion of the shaft portion is fixed.

Inventors

  • KYOUNGSOO, Kim

Assignees

  • SAMSUNG SDI CO., LTD.

Dates

Publication Date
20260513
Application Date
20251017

Claims (15)

  1. An assembly structure of a battery frame, the assembly structure comprising: a first boss portion (110) protruding from a side edge (101) of a first frame (100) in which a battery cell is mounted and having an insertion hole portion (111a, 112a) formed in a direction of the side edge (101); a second boss portion (210) arranged to correspond to the first boss portion (110) on a second frame (200) on which the first frame (100) is seated, and having a coupling hole portion (211a, 212a) corresponding to the insertion hole portion (111a, 112a); and a fastening member (310) having a shaft portion (312) passing through the insertion hole portion (111a, 112a) and the coupling hole portion (211a, 212a), wherein an end portion of the shaft portion (312) is fixed.
  2. The assembly structure as claimed in claim 1, wherein the second boss portion (210) comprises: a first fixing body (211) contacting and supporting the first boss portion (110) and having a first coupling hole portion (211a); and a second fixing body (212) spaced apart from the first fixing body (211) in an axial direction of the shaft portion (312) and having a second coupling hole portion (212a), wherein a cut section, CS, is between the first fixing body (211) and the second fixing body (212), the cut section exposing a portion of the shaft portion (312) to an outside.
  3. The assembly structure as claimed in claim 2, wherein the first boss portion (110) comprises: a first support body (111) in the cut section, having a first insertion hole portion (111a), and contacting the first fixing body (211); and a second support body (112) in the cut section, having a second insertion hole (112a) portion, and contacting the second fixing body (212), particularly wherein a distance between the first support body (111) and the second support body (112) is 1 to 2 times a diameter of the shaft portion (312).
  4. The assembly structure as claimed in claim 2 or 3, wherein an outer side surface (212b) of the second fixing body (212) is inclined downward, an end portion (313) of the shaft portion (312) being fixed to the outer side surface (212b) of the second fixing body (212), particularly wherein an angle between the outer side surface (212b) and a surface of the second frame (200) on which the first frame (100) is seated 45 degrees or more.
  5. The assembly structure as claimed in any of claims 1-4, wherein a height of the first boss portion (110) is 2 to 3 times a diameter of the shaft portion (312).
  6. The assembly structure as claimed in any of claims 1-5, wherein a protrusion length (L) of the first boss portion (110) is 2 to 3 times a diameter of the shaft portion (312).
  7. The assembly structure as claimed in claim 1, wherein the second boss portion (210') comprises: a first fixing body (211') contacting and supporting one side surface of the first boss portion (110'); a second fixing body (212') contacting and supporting another side surface of the first boss portion (110'); and a third fixing body (213') spaced apart from the second fixing body (212') in an axial direction of the shaft portion (312), wherein a cut section is between the second fixing body (212') and the third fixing body (213'), the cut section exposing a portion of the shaft portion (312) to an outside.
  8. The assembly structure as claimed in claim 7, wherein a distance between the second fixing body (212') and the third fixing body (213') is set to 2 times or less a diameter of the shaft portion (312).
  9. A battery package comprising: at least one battery cell (150); a first frame (100) having the at least one battery cell (150) mounted therein and comprising a first boss portion (110) protruding from a side edge (101) thereof, the first boss portion (110) having an insertion hole portion (111a, 112a) formed in a direction of the side edge (101); and a second frame (200) on which the first frame (100) is seated and which comprises a second boss portion (210) corresponding to the first boss portion (110), the second boss portion (210) having a coupling hole portion (211a, 212a) formed to correspond to the insertion hole portion (111a, 112a), wherein a shaft portion (312) of a fastening member (310) passes through the insertion hole portion (111a, 112a) and the coupling hole portion (211a, 212a) and an end portion of the shaft portion (312) is fixed, to assemble the first frame (100) to the second frame (200).
  10. The battery package as claimed in claim 9, wherein the second boss portion (210) comprises: a first fixing body (211) contacting and supporting the first boss portion (110) and having a first coupling hole portion (211a); and a second fixing body (212) spaced apart from the first fixing body (211) in an axial direction of the shaft portion (312) and having a second coupling hole portion (212a), wherein a cut section, CS, is between the first fixing body (211) and the second fixing body (212), the cut section exposing a portion of the shaft portion (312) to an outside.
  11. The battery package as claimed in claim 10, wherein the first boss portion (110) comprises: a first support body (111) in the cut section, having a first insertion hole portion (111a), and contacting the first fixing body; and a second support body (112) in the cut section, having a second insertion hole (112a) portion, and contacting the second fixing body (212), particularly wherein a distance between the first support body (111) and the second support body (112) is set to a size of 1 to 2 times a diameter of the shaft portion.
  12. The battery package as claimed in claim 10 or 11, wherein an outer side surface (212b) of the second fixing body (212) is inclined downward, an end portion (313) of the shaft portion (312) being fixed to the outer side surface (212b) of the second fixing body (212), particularly wherein an angle between the outer side surface (212b) and a surface of the second frame (200) on which the first frame (100) is seated 45 degrees or more.
  13. The battery package as claimed in any of claims 9-12, wherein a height of the first boss portion (110) is 2 to 3 times a diameter of the shaft portion (312).
  14. The battery package as claimed in any of claims 9-13, wherein a protrusion length (L) of the first boss portion (110) is 2 to 3 times a diameter of the shaft portion (312).
  15. The battery package as claimed in claim 9, wherein the second boss portion (210') comprises: a first fixing body (211') contacting and supporting one side surface of the first boss portion (110'); a second fixing body (212') contacting and supporting another side surface of the first boss portion (110'); and a third fixing body (213') spaced apart from the second fixing body (212') in an axial direction of the shaft portion (312), wherein a cut section is between the second fixing body (212') and the third fixing body (213'), the cut section exposing a portion of the shaft portion (312) to an outside, particularly wherein a distance between the second fixing body (212') and the third fixing body (213') is set to 2 times or less a diameter of the shaft portion (312).

Description

BACKGROUND 1. Field Aspects of some embodiments of the present disclosure relate to an assembly structure of a battery frame and a battery package including the same. 2. Description of the Related Art Unlike primary batteries that cannot be recharged, secondary batteries refer to batteries capable of being repeatedly charged and discharged without damaging the secondary batteries, and may be used in the field of electronic devices, including mobile phones, PDAs, laptop computers, tablet PCs, and the like. In cases in which secondary batteries are installed in electronic devices such as laptop computers, these secondary batteries are generally fixed inside a cover frame of an electronic device in a state where a plurality of battery cells are mounted in a battery frame. In this regard, the battery frame may be fixed and assembled through a separate fixing member such as a fastening bolt while being seated in the cover frame of the electronic device. Recently, as electronic devices have become relatively lighter and slimmer, battery cells are also becoming lighter and slimmer for the same capacity, resulting in a trend toward decreasing thickness. However, in applications in which the battery frame is assembled with and fixed to the cover frame by using fastening bolts, it may be desirable to form a fastening portion with sufficient thickness for the fastening bolts to be fastened. Thus, there has been a difficulty in accommodating the trend toward slimmer batteries because it is difficult to reduce the thickness of the fastening portion above a reference value. To improve this, in applications in which a double-sided tape is used instead of fastening bolts, due to a structure where the double-sided tape is hidden between a battery frame and a cover frame after assembly, damage to battery cells may occur when the battery frame is separated from the cover frame. In applications in which an adhesive such as a double-sided tape is used, the thickness between the battery frame and the cover frame increases with the thickness of the adhesive, and attachment variation occurs from the change in size, leading to increased quality risks. The above information disclosed in this Background section is only for enhancement of understanding of the background and therefore the information discussed in this Background section does not necessarily constitute prior art. SUMMARY According to the present invention, an assembly structure of a battery frame and a battery package as claimed in claims 1 and 9, respectively, are provided. Further embodiments of the invention are described in the dependent claims. Aspects of some embodiments of the present disclosure relate to an assembly structure of a battery frame and a battery package including the same, and for example, to an assembly structure of a battery frame that enables easy and accurate assembly between frames, and a battery package including the same. Aspects of some embodiments include an assembly structure of a battery frame and a battery package including the same, the assembly structure enabling relatively easy and accurate assembly between frames even in case that the thickness of a frame decreases in response to the slimming of battery cells. Aspects of embodiments according to the present disclosure are not limited to the above-described characteristics, and other unmentioned characteristics of embodiments according to the present disclosure can be understood by the following description and will be more clearly understood by the disclosed embodiments of the present disclosure. Also, it will be appreciated that the characteristics of embodiments according to the present disclosure can be realized by the means and combinations thereof indicated in the claims. According to some embodiments of the present disclosure, an assembly structure of a battery frame includes a first boss portion protruding from a side edge of a first frame in which a battery cell is mounted and having an insertion hole portion formed in a direction of the side edge, a second boss portion arranged to correspond to the first boss portion on a second frame on which the first frame is seated, and having a coupling hole portion corresponding to the insertion hole portion, and a fastening member having a shaft portion passing through the insertion hole portion and the coupling hole portion, wherein an end portion of the shaft portion is fixed. According to some embodiments, the second boss portion may include a first fixing body that is in close contact with and supports the first boss portion and has a first coupling hole portion, and a second fixing body spaced apart from the first fixing body in an axial direction of the shaft portion and having a second coupling hole portion, wherein a cut section may be formed between the first fixing body and the second fixing body, the cut section exposing a portion of the shaft portion to an outside. According to some embodiments, the first boss portion may