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CN-122000598-A - Battery frame assembly structure and battery pack including the same

CN122000598ACN 122000598 ACN122000598 ACN 122000598ACN-122000598-A

Abstract

An assembly structure of a battery frame and a battery pack including the assembly structure are disclosed. In an assembly structure of a battery frame, the assembly structure includes a first protrusion 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 an extending direction of the side edge, a second protrusion portion arranged to correspond to the first protrusion 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 configured to be fixed when the first frame is assembled to the second frame.

Inventors

  • JIN GUIXIU

Assignees

  • 三星SDI株式会社

Dates

Publication Date
20260508
Application Date
20250915
Priority Date
20241107

Claims (20)

  1. 1. An assembled structure of a battery frame, the assembled structure comprising: A first protruding portion protruding from a side edge of the first frame in which the battery cell is mounted, and having an insertion hole portion formed in a direction in which the side edge extends; a second convex portion arranged to correspond to the first convex portion on a second frame on which the first frame is placed 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 configured to be fixed when the first frame is assembled to the second frame.
  2. 2. The assembled structure of claim 1 wherein The second convex portion includes: a first fixing body contacting and supporting the first protrusion portion and having 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 cutting section is formed between the first and second fixing bodies, the cutting section exposing a portion of the shaft portion to the outside.
  3. 3. The assembled structure of claim 2, wherein The first convex portion includes: a first support body disposed in the cutting section, having a first insertion hole portion, and contacting the first fixing body, and A second support body disposed in the cutting section, having a second insertion hole portion, and contacting the second fixing body.
  4. 4. The assembled structure of claim 3 wherein The distance between the first support body and the second support body is 1 to 2 times the diameter of the shaft portion.
  5. 5. The assembled structure of claim 2, wherein An outer side surface of the second fixing body is inclined downward, and the end portion of the shaft portion is fixed to the outer side surface of the second fixing body.
  6. 6. The assembled structure of claim 5 wherein The angle between the outer side surface and the surface of the second frame on which the first frame is disposed is 45 degrees or more.
  7. 7. The assembled structure of claim 1 wherein The height of the first protruding portion is 2 to 3 times the diameter of the shaft portion.
  8. 8. The assembled structure of claim 1 wherein The protruding length of the first protruding portion is 2 to 3 times the diameter of the shaft portion.
  9. 9. The assembled structure of claim 1 wherein The second convex portion includes: A first fixing body contacting and supporting one side surface of the first protruding portion; A second fixing body contacting and supporting the other side surface of the first convex portion, and A third fixed body spaced apart from the second fixed body in an axial direction of the shaft portion, Wherein a cutting section is formed between the second and third fixing bodies, the cutting section exposing a portion of the shaft portion to the outside.
  10. 10. The assembled structure of claim 9 wherein The distance between the second fixing body and the third fixing body is set to 1 to 2 times the diameter of the shaft portion.
  11. 11. A battery pack, comprising: At least one battery cell; A first frame in which the at least one battery cell is mounted and including a first protruding portion protruding from a side edge of the first frame, the first protruding portion having an insertion hole portion formed in a direction in which the side edge extends, and A second frame on which the first frame is disposed, and which includes a second convex portion corresponding to the first convex portion, the second convex 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 pack of claim 11, wherein The second convex portion includes: a first fixing body contacting and supporting the first protrusion portion and having 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 cutting section is formed between the first and second fixing bodies, the cutting section exposing a portion of the shaft portion to the outside.
  13. 13. The battery pack of claim 12, wherein The first convex portion includes: a first support body disposed in the cutting section, having a first insertion hole portion, and contacting the first fixing body, and A second support body disposed in the cutting section, having a second insertion hole portion, and contacting the second fixing body.
  14. 14. The battery pack of claim 13, wherein The distance between the first support body and the second support body is 1 to 2 times the diameter of the shaft portion.
  15. 15. The battery pack of claim 12, wherein An outer side surface of the second fixing body is inclined downward, and the end portion of the shaft portion is fixed to the outer side surface of the second fixing body.
  16. 16. The battery pack of claim 15, wherein The angle between the outer side surface and the surface of the second frame on which the first frame is disposed is 45 degrees or more.
  17. 17. The battery pack of claim 11, wherein The height of the first protruding portion is 2 to 3 times the diameter of the shaft portion.
  18. 18. The battery pack of claim 11, wherein The protruding length of the first protruding portion is 2 to 3 times the diameter of the shaft portion.
  19. 19. The battery pack of claim 11, wherein The second convex portion includes: A first fixing body contacting and supporting one side surface of the first protruding portion; A second fixing body contacting and supporting the other side surface of the first convex portion, and A third fixing body spaced apart from the second fixing body in an axial direction of the shaft portion, wherein a cutting section is formed between the second fixing body and the third fixing body, the cutting section exposing a portion of the shaft portion to the outside.
  20. 20. The battery pack of claim 19, wherein The distance between the second fixing body and the third fixing body is 1-2 times the diameter of the shaft portion.

Description

Battery frame assembly structure and battery pack including the same Technical Field Aspects of some embodiments of the present disclosure relate to an assembly structure of a battery frame and a battery pack including the assembly structure. Background Unlike a primary battery that cannot be recharged, a secondary battery refers to a battery that can be repeatedly charged and discharged without damaging the secondary battery, and may be used in the field of electronic devices including mobile phones, PDAs, laptop computers, tablet computers, and the like. In the case of mounting secondary batteries in electronic devices such as laptop computers, these secondary batteries are generally fixed inside a cover frame of the electronic device in a state in which a plurality of battery cells are mounted in the battery frame. In this regard, the battery frame may be fixed and assembled by 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 relatively lighter and thinner, battery cells also become lighter and thinner at the same capacity, causing a trend of thickness reduction. However, in an application in which the battery frame is assembled with the cover frame and fixed to the cover frame by using the fastening bolts, it may be necessary to form the fastening portion having a sufficient thickness for fastening the fastening bolts. Therefore, since it is difficult to reduce the thickness of the fastening portion to above the reference value, it is difficult to accommodate the trend of thinner batteries. To improve this, in an application using a double-sided tape instead of the fastening bolts, damage to the battery cells may occur when the battery frame is separated from the cover frame due to the structure in which the double-sided tape is hidden between the battery frame and the cover frame after assembly. In applications using an adhesive such as a double-sided tape, the thickness between the battery frame and the cover frame increases with the thickness of the adhesive, and attachment changes due to dimensional changes, resulting in 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 form the prior art. Disclosure of Invention Aspects of some embodiments of the present disclosure relate to an assembly structure of a battery frame and a battery pack including the same, for example, to an assembly structure of a battery frame that can be easily and precisely assembled between frames and a battery pack including the same. Aspects of some embodiments include an assembly structure of a battery frame that can be assembled relatively easily and accurately between frames even in the case where the thickness of the frames is reduced in response to thinning of battery cells, and a battery pack including the assembly structure. Aspects of embodiments according to the present disclosure are not limited to the above-described features, and other non-mentioned features of embodiments according to the present disclosure may be understood by the following description, and will be more clearly understood by the disclosed embodiments of the present disclosure. Furthermore, it will be appreciated that features according to embodiments of the present disclosure may be implemented in the manner indicated in the claims and combinations thereof. According to some embodiments of the present disclosure, an assembly structure of a battery frame includes a first protrusion portion protruding from a side edge of the first frame in which a battery cell is mounted and having an insertion hole portion formed in a direction in which the side edge extends, a second protrusion portion arranged to correspond to the first protrusion 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 configured to be fixed when the first frame is assembled to the second frame. According to some embodiments, the second protruding portion may include a first fixing body closely contacting and supporting the first protruding portion and having 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 cutting section may be between the first fixing body and the second fixing body, the cutting section exposing a portion of the shaft portion to the outside. According to some embodiments, the first protruding portion may include a first support body disposed in the cutting section having a first insertion hole