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US-20260128444-A1 - ASSEMBLY STRUCTURE OF BATTERY FRAME AND BATTERY PACKAGE INCLUDING THE SAME

US20260128444A1US 20260128444 A1US20260128444 A1US 20260128444A1US-20260128444-A1

Abstract

Provided are an assembly structure of a battery frame and a battery package including the same, in which assembly between frames may be easily and accurately performed. To this end, provided are an assembly structure of a battery frame and a battery package including the same, the assembly structure including a first boss portion that protrudes from a side edge of a first frame having a battery cell mounted therein and has an insertion hole portion in a direction of the side edge, a second boss portion that is arranged to correspond to the first boss portion on a second frame on which the first frame is seated, and that has 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, an end portion of the shaft portion being fixed.

Inventors

  • Kyoungsoo Kim

Assignees

  • SAMSUNG SDI CO., LTD.

Dates

Publication Date
20260507
Application Date
20250507
Priority Date
20241107

Claims (20)

  1. 1 . An assembly structure of a battery frame, the assembly structure comprising: 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.
  2. 2 . The assembly structure of claim 1 , wherein the second boss portion comprises: 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 is formed between the first fixing body and the second fixing body, the cut section exposing a portion of the shaft portion to an outside.
  3. 3 . The assembly structure of claim 2 , wherein the first boss portion comprises: a first support body that is arranged in the cut section, has a first insertion hole portion, and is in close contact with the first fixing body; and a second support body that is arranged in the cut section, has a second insertion hole portion, and is in close contact with the second fixing body.
  4. 4 . The assembly structure of claim 3 , wherein a distance between the first support body and the second support body is set to a size of 1 to 2 times a diameter of the shaft portion.
  5. 5 . The assembly structure of claim 1 , wherein an outer side surface of the second fixing body is inclined downward, an end portion of the shaft portion being fixed to the outer side surface of the second fixing body.
  6. 6 . The assembly structure of claim 5 , wherein an angle between the outer side surface and a surface of the second frame on which the first frame is seated is set to 45 degrees or more.
  7. 7 . The assembly structure of claim 1 , wherein a height of the first boss portion is set to a size of 2 to 3 times a diameter of the shaft portion.
  8. 8 . The assembly structure of claim 1 , wherein a protrusion length of the first boss portion is set to a size of 2 to 3 times a diameter of the shaft portion.
  9. 9 . The assembly structure of claim 1 , wherein the second boss portion comprises: a first fixing body that is in close contact with and supports one side surface of the first boss portion; a second fixing body that is in close contact with and supports another side surface of the first boss portion; and a third fixing body spaced apart from the second fixing body in an axial direction of the shaft portion, wherein a cut section is formed between the second fixing body and the third fixing body, the cut section exposing a portion of the shaft portion to an outside.
  10. 10 . The assembly structure of claim 9 , wherein a distance between the second fixing body and the third fixing body is set to 2 times or less a diameter of the shaft portion.
  11. 11 . A battery package comprising: at least one battery cell; a first frame having the at least one battery cell mounted therein and comprising a first boss portion protruding from a side edge thereof, the first boss portion having an insertion hole portion formed in a direction of the side edge; and a second frame on which the first frame is seated and which comprises a second boss portion corresponding to the first boss portion, the second boss portion having a coupling hole portion formed to correspond to the insertion hole portion, wherein a shaft portion of a fastening member passes through the insertion hole portion and the coupling hole portion and an end portion of the shaft portion is fixed, to assemble the first frame to the second frame.
  12. 12 . The battery package of claim 11 , wherein the second boss portion comprises: 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 is formed between the first fixing body and the second fixing body, the cut section exposing a portion of the shaft portion to an outside.
  13. 13 . The battery package of claim 12 , wherein the first boss portion comprises: a first support body that is arranged in the cut section, has a first insertion hole portion, and is in close contact with the first fixing body; and a second support body that is arranged in the cut section, has a second insertion hole portion, and is in close contact with the second fixing body.
  14. 14 . The battery package of claim 13 , wherein a distance between the first support body and the second support body is set to a size of 1 to 2 times a diameter of the shaft portion.
  15. 15 . The battery package of claim 11 , wherein an outer side surface of the second fixing body is inclined downward, an end portion of the shaft portion being fixed to the outer side surface of the second fixing body.
  16. 16 . The battery package of claim 15 , wherein an angle between the outer side surface and a surface of the second frame on which the first frame is seated is set to 45 degrees or more.
  17. 17 . The battery package of claim 11 , wherein a height of the first boss portion is set to a size of 2 to 3 times a diameter of the shaft portion.
  18. 18 . The battery package of claim 11 , wherein a protrusion length of the first boss portion is set to a size of 2 to 3 times a diameter of the shaft portion.
  19. 19 . The battery package of claim 11 , wherein the second boss portion comprises: a first fixing body that is in close contact with and supports one side surface of the first boss portion; a second fixing body that is in close contact with and supports another side surface of the first boss portion; and a third fixing body spaced apart from the second fixing body in an axial direction of the shaft portion, wherein a cut section is formed between the second fixing body and the third fixing body, the cut section exposing a portion of the shaft portion to an outside.
  20. 20 . The battery package of claim 19 , wherein a distance between the second fixing body and the third fixing body is set to 2 times or less a diameter of the shaft portion.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application claims priority to Korean Patent Application No. 10-2024-0157079, filed on Nov. 7, 2024, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. BACKGROUND 1. Field One or more embodiments relate to an assembly structure of a battery frame and a battery package including the same, and more particularly, to an assembly structure of a battery frame that enables easy and accurate assembly between frames, 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 charging and discharging, and are widely used in the field of electronic devices, including mobile phones, PDAs, laptop computers, tablet PCs, and the like. In case that 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 is 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 become lighter and slimmer, battery cells are also becoming lighter and slimmer for the same capacity, resulting in a trend toward decreasing thickness. However, in case that the battery frame is assembled with and fixed to the cover frame by using fastening bolts, it is necessary 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 case that 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 occurs when the battery frame is separated from the cover frame. In case that 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. SUMMARY One or more embodiments include an assembly structure of a battery frame and a battery package including the same, the assembly structure enabling easy and accurate assembly between frames even in case that the thickness of a frame decreases in response to the slimming of battery cells. Problems to be solved by the disclosure are not limited to the above-described problems, and other unmentioned problems and advantages of the disclosure can be understood by the following description and will be more clearly understood by embodiments of the disclosure. Also, it will be appreciated that the problems and advantages to be solved by the disclosure can be realized by the means and combinations thereof indicated in the claims. According to one or more embodiments, 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. In an embodiment, 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. In an embodiment, the first boss portion may include a first support body that is arranged in the cut section, has a first insertion hole portion, and is in close contact with the first fixing body, and a second support body that is arranged in the cut section, has a second insertion hole portion, and is in close contact with the second fixing body. In an embodiment, a distance between the first support body and the second support body may be set to a size of 1 to 2 times a diameter of the shaft portion. In an embodiment, an outer side surface of the second fixing body may be inclined downward, an end portion of the shaft portion being fixed to the outer side surface of