US-12623526-B2 - Battery assembly mounting structure for a vehicle

US12623526B2US 12623526 B2US12623526 B2US 12623526B2US-12623526-B2

Abstract

Disclosed is a battery assembly mounting structure for a vehicle. The battery assembly mounting structure includes: a battery assembly provided with an opening a constant shape in cross section from the bottom toward the top; a fastening bolt fastened passing through the opening from the lower side to the upper side; and a swappable assembly including an outer side to be mounted to and demounted from the opening through the lower side of the opening, and an inner side to and from which the fastening bolt is mounted and demounted, and providing elastic support between the outer side and the inner side.

Inventors

Gyung Hoon Shin

Assignees

HYUNDAI MOTOR COMPANY
KIA CORPORATION

Dates

Publication Date: 20260512
Application Date: 20221206
Priority Date: 20220726

Claims (15)

1 . A battery assembly mounting structure for a vehicle, comprising: a battery assembly provided with an opening having a constant shape in cross section from a lower side toward an upper side of the opening; a fastening bolt configured to pass through the opening from the lower side to the upper side; and a swappable assembly comprising an outer side and an inner side and configured to provide elastic support between the outer side and the inner side, wherein the outer side is configured to be mounted to and demounted from the opening through the lower side of the opening, and the fastening bolt is mounted to and demounted from the inner side, wherein the swappable assembly comprises: a first fixing guide rectilinearly moving upwards toward the opening and coupled to an inside of the opening; a sleeve elastically supporting the fastening bolt to be mounted and dismounted inside the first fixing guide; a second fixing guide disposed between the first fixing guide and the sleeve; and a guide spring elastically supporting the sleeve with respect to the second fixing guide.
2 . The battery assembly mounting structure of claim 1 , wherein the first fixing guide is integrally provided with: a fixing protrusion elastically coupled to a fixing groove formed inside the opening; and a tool insertion hole through which a tool is inserted to pull the first fixing guide downwards from the opening so that the fixing protrusion is separated from the fixing groove.
3 . The battery assembly mounting structure of claim 2 , wherein the first fixing guide is integrally provided with: an upper restricting portion for restricting an upper end of the second fixing guide; and a lower restricting portion for elastically restricting a lower end of the second fixing guide.
4 . The battery assembly mounting structure of claim 3 , wherein: the lower end of the second fixing guide is formed with a tool insertion groove communicating with the tool insertion hole of the first fixing guide; and the lower restricting portion of the first fixing guide is formed to block the lower end of the tool insertion groove.
5 . The battery assembly mounting structure of claim 3 , wherein the sleeve comprises: a cylindrical unit guiding the fastening bolt to rectilinearly move up and down while surrounding an outer circumference of the fastening bolt; a plurality of elastic supporters protruding downward from the cylindrical unit; and a holding protrusion having a shape that becomes narrower toward an inside of the cylindrical unit and wider again upward from a lower end of the elastic supporter.
6 . The battery assembly mounting structure of claim 5 , wherein the sleeve comprises a plurality of cut-out grooves cut in up and down directions of the cylindrical unit to separate the elastic supporter and the cylindrical unit.
7 . The battery assembly mounting structure of claim 3 , wherein the guide spring comprises a plurality of leaf springs connecting the second fixing guide and the sleeve; and a surface of the plurality of leaf springs is disposed in parallel to a lengthwise direction of the sleeve.
8 . The battery assembly mounting structure of claim 7 , wherein the plurality of leaf springs is disposed between the second fixing guide and the sleeve to form a vertex shape centered upon the sleeve.
9 . The battery assembly mounting structure of claim 7 , wherein: the guide spring comprises an end portion bent to have a U-shape to be fixed to the second fixing guide; and the U-shaped end portion of the guide spring is fitted to a spring mounting groove formed in the second fixing guide while surrounding both wall sides of the second fixing guide.
10 . The battery assembly mounting structure of claim 9 , wherein: the spring mounting groove of the second fixing guide is opened upwards; and the upper restricting portion of the first fixing guide is formed to restrict the upper end of the spring mounting groove in which the guide spring is inserted.
11 . The battery assembly mounting structure of claim 2 , wherein the opening is formed in a mounting bush coupled to a side member of the battery assembly.
12 . The battery assembly mounting structure of claim 11 , wherein: the side member comprises a lower end supporter to support the lower end of the mounting bush; and the lower end supporter is formed with an assembly through hole via which the swappable assembly passes to be inserted in or separated from the mounting bush.
13 . The battery assembly mounting structure of claim 12 , wherein the side member comprises a cross-sectional structure where the lower end supporter and a surrounding supporter disposed above the lower end supporter and surrounding and supporting the mounting bush are spaced apart up and down from each other.
14 . The battery assembly mounting structure of claim 13 , wherein the side member comprises a cross-sectional structure where a head cover formed with a head through hole, through which a head of the fastening bolt passes, is disposed being separated from the lower side of the lower end supporter.
15 . The battery assembly mounting structure of claim 2 , wherein the opening is formed in a through pipe installed passing through an inside of the battery assembly.

Description

CROSS REFERENCE TO RELATED APPLICATION The present application claims priority to Korean Patent Application No. 10-2022-0092617, filed Jul. 26, 2022, the entire contents of which are incorporated herein by reference. BACKGROUND Field of the Present Disclosure The disclosure relates to a structure for mounting a battery assembly to a lower side of a vehicle. Description of the Related Art An electric vehicle, a hybrid vehicle or the like is mounted with a high voltage battery (hereinafter referred to as a “battery assembly”), and the battery assembly is likely to be mounted to a lower side of a vehicle body. In particular, the electric vehicle has a disadvantage in that charging time is relatively longer than refueling time of a general internal combustion engine vehicle. To solve this disadvantage, a method of attaching and detaching a replaceable battery assembly to and from a vehicle body has been sought. Matters described as the related art are provided merely for promoting understanding for the background of the disclosure, and should not be taken as the prior art already known to a person having ordinary knowledge in the art. SUMMARY OF THE PRESENT DISCLOSURE An aspect of the disclosure is to provide a battery assembly mounting structure for a vehicle, in which a fastening bolt for mounting a battery assembly to a lower side of a vehicle body maintains an assembled state with the battery assembly even when the battery assembly is separated from the vehicle body, so that the fastening bolt can be reusable without the need of handling the fastening bolt separately from the battery assembly when the battery assembly is repetitively detached from and attached to the vehicle body. Another aspect of the disclosure is to provide a battery assembly mounting structure for a vehicle, in which an assembly tolerance is easily covered when the battery assembly is mounted to the vehicle body, and a fastening angle of a fastening bolt is appropriately guided to prevent erroneous fastening, thereby securing assembling and disassembling workability, and providing easy replaceability of the fastening bolt when the fastening bolt is damaged. Still another aspect of the disclosure is to provide a battery assembly mounting structure for a vehicle, which can be easily replaced even while the battery assembly is mounted to the vehicle body when the battery assembly mounting structure itself needs to be replaced as it is damaged or deformed. According to an embodiment of the disclosure, a battery assembly mounting structure for the vehicle includes: a battery assembly equipped with an opening having a constant shape in cross section from a lower side toward an upper side; a fastening bolt fastened passing through the opening from the lower side to the upper side; and a swappable assembly including an outer side and an inner side and configured to provide elastic support between the outer side and the inner side. The outer side is configured to be mounted to and demounted from the opening through the lower side of the opening, and the fastening bolt is mounted to and demounted from the inner side of the opening. The swappable assembly may include: a first fixing guide rectilinearly moving upwards toward the opening and coupled to the inside of the opening; a sleeve elastically supporting the fastening bolt to be mounted and dismounted inside the first fixing guide; a second fixing guide disposed between the first fixing guide and the sleeve; and a guide spring elastically supporting the sleeve with respect to the second fixing guide. The first fixing guide may be integrally provided with: a fixing protrusion elastically coupled to a fixing groove formed inside the opening; and a tool insertion hole through which a tool for pulling the first fixing guide downwards from the opening so that the fixing protrusion can be separated from the fixing groove. The first fixing guide may be integrally provided with: an upper restricting portion for restricting an upper end of the second fixing guide; and a lower restricting portion for elastically restricting a lower end of the second fixing guide. The lower end of the second fixing guide may be formed with a tool insertion groove communicating with the tool insertion hole of the first fixing guide; and the lower restricting portion of the first fixing guide may be formed to block the lower end of the tool insertion groove.the sleeve may include:a cylindrical unit guiding the fastening bolt to rectilinearly move up and down while surrounding the outer circumference of the fastening bolt;a plurality of elastic supporters protruding downward from the cylindrical unit;a holding protrusion having a shape that becomes narrower toward the inside of the cylindrical unit and wider again upward from a lower end of the elastic supporter. The sleeve may include a plurality of cut-out grooves cut in up and down directions of the cylindrical unit to separate the elastic supporter and the cylindrical u