Insulating bolt and battery pack comprising same, and vehicle comprising same battery pack

Abstract

Disclosed are an insulating bolt, a battery pack comprising same, and a vehicle comprising the battery pack. An insulating bolt according to an embodiment of the present invention is used in a battery pack and comprises: a fastening member having a first coupling portion to which a first tool is coupled, and being fastened to an object; and a protection member formed of an insulating material, configured to surround a portion of the fastening member, and having a second coupling portion to which a second tool may be coupled.

Description

Insulating bolts and a battery pack including the same and a vehicle including the battery pack

[0001] This application is a priority application for Korean Patent Application No. 10-2025-0032008 filed on March 12, 2025, and all contents disclosed in the specification and drawings of said application are incorporated into this application by reference.

[0002] The present invention relates to an insulating bolt, a battery pack including the same, and an automobile including the battery pack. More specifically, the invention relates to an insulating bolt that provides electrical insulation and facilitates easy release of the fastening, a battery pack including the same, and an automobile including the battery pack.

[0003] Generally, a secondary battery refers to a battery capable of repeated charging and discharging, such as lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. The battery cells corresponding to the most basic secondary batteries can provide an output voltage of approximately 2.5V to 4.2V.

[0004] Recently, as these battery cells are applied to devices requiring high output voltage and large charging capacity, such as electric vehicles or Energy Storage Systems (ESS), battery modules configured by connecting multiple battery cells in series, parallel, or a combination of series and parallel, and battery packs configured by connecting these battery modules again in series, parallel, or a combination of series and parallel are widely used.

[0005] Lithium secondary batteries are currently in the spotlight due to their advantages, such as high operating voltage and significantly higher energy density, but because they use organic electrolytes, if the lithium secondary battery is overcharged, it causes overcurrent and overheating, which in severe cases can lead to explosions or fires caused by ignition.

[0006] Furthermore, due to the increasing number of fire accidents involving secondary batteries, the need for electrical insulation of components is rising, and consequently, conductive components are being replaced with non-conductive components that possess electrical insulation properties.

[0007] For example, bolts that fasten components at various locations on a battery pack can also utilize non-conductive materials, such as plastic, which possess insulating properties. However, bolts made of non-conductive materials like plastic have the problem of easily breaking during the fastening or unfastening process.

[0008] Furthermore, for example, when bolts need to be loosened to repair or replace components inside a battery pack, if the bolt heads or other parts of the bolts securing the components are damaged, it becomes difficult to loosen the bolts, which presents a problem in that repairing or replacing the components is not easy or even impossible.

[0009] Accordingly, the technical problem that the present invention aims to solve is to provide an insulating bolt capable of electrical insulation while allowing easy release of the fastened bolt, a battery pack including the same, and an automobile including the battery pack.

[0010] In addition, the invention provides an insulating bolt that facilitates the repair or replacement of internal components of a battery pack upon the release of the fastened bolt, a battery pack including the same, and a vehicle including the battery pack.

[0011] In addition, the invention provides an insulating bolt capable of preventing flame generation through electrical insulation of the bolt, a battery pack including the same, and a vehicle including the battery pack.

[0012] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by those skilled in the art from the description of the invention below.

[0013] According to one aspect of the present invention, an insulating bolt used in a battery pack may be provided, comprising: a fastening member formed with a first coupling portion to which a first tool is coupled and fastened to an object; and a protective member formed of an insulating material and configured to surround a part of the fastening member, and having a second coupling portion formed to which a second tool can be coupled.

[0014] In one embodiment, the fastening member may be formed of a metal material.

[0015] In one embodiment, the fastening member may include a head portion having a first coupling portion formed therein to which the first tool is coupled; and a leg portion extending from the head portion and having screw threads formed therein.

[0016] In one embodiment, the first coupling portion formed in the head portion may be formed as a polygonal groove.

[0017] In one embodiment, the first coupling portion formed in the head portion may be formed as a hexagonal groove.

[0018] In one embodiment, the protective member may include a fastening member protection portion into which a part of the fastening member is inserted; and a tooling portion located on the opposite side of the fastening member protection portion and having a second coupling portion formed therein to which the second tool can be coupled.

[0019] In one embodiment, a portion of the fastening member is formed as a polygon, and the fastening member protection portion may also be formed as a polygon.

[0020] In one embodiment, a portion of the fastening member is formed in a hexagon, and the fastening member protection portion may also be formed in a hexagon.

[0021] In one embodiment, the second coupling portion may be formed as a polygonal groove having a larger size than the first coupling portion.

[0022] In one embodiment, the second coupling portion may be formed as a hexagonal groove having a larger size than the first coupling portion.

[0023] In one embodiment, the tooling part includes a first surface at a preset position; a second surface formed by being inserted into the lower side of the first surface; and a third surface extending from the second surface and formed parallel to the first surface, wherein a through hole having a size and shape corresponding to the first coupling part may be formed in the third surface.

[0024] In one embodiment, the second coupling portion is formed on the second surface, and the second tool can contact the second surface.

[0025] In one embodiment, the second surface may be formed as a polygon.

[0026] In one embodiment, the second surface may be formed as a hexagon.

[0027] In one embodiment, the outer surface connected to the first surface may be formed in a shape corresponding to the shape of the third tool so that the third tool is coupled to the outer surface connected to the first surface.

[0028] In one embodiment, the outer surface connected to the first surface may be formed as a polygon.

[0029] In one embodiment, the outer surface connected to the first surface may be formed in a hexagon.

[0030] In one embodiment, an insulating cover member coupled to the second surface may be included.

[0031] In one embodiment, the insulating cover member may include a main body portion formed in a shape corresponding to the second surface and coupled to the second surface; and an insertion portion formed in a shape corresponding to the through hole and inserted into the through hole.

[0032] In one embodiment, the insertion part may be inserted up to the first coupling part.

[0033] Meanwhile, according to another aspect of the present invention, a battery pack including the aforementioned insulating bolt may be provided, and a vehicle including the aforementioned battery pack may also be provided.

[0034] The embodiments of the present invention have the effect of enabling electrical insulation while also facilitating the release of fastened bolts.

[0035] In addition, the release of the fastened bolts facilitates the repair or replacement of internal components of the battery pack.

[0036] In addition, the electrical insulation of the bolt has the effect of preventing flame generation.

[0037] However, the effects obtainable through the present invention are not limited to those described above, and other unmentioned technical effects will be clearly understood by those skilled in the art from the description of the invention below.

[0038] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings.

[0039] FIG. 1 is a schematic perspective view of an insulating bolt assembly according to a first embodiment of the present invention.

[0040] FIG. 2 is a schematic exploded perspective view of an insulating bolt according to a first embodiment of the present invention.

[0041] FIG. 3 is a cross-sectional view of an insulating bolt according to a first embodiment of the present invention.

[0042] FIG. 4 is a perspective view showing the lower side of the protective member in an insulating bolt according to the first embodiment of the present invention.

[0043] FIG. 5 is a drawing showing the first tool separated from the first joint in an insulating bolt according to the first embodiment of the present invention.

[0044] FIG. 6 is a drawing showing the first tool coupled to the first coupling part in an insulating bolt according to the first embodiment of the present invention.

[0045] FIG. 7 is a drawing showing the second tool separated from the second connecting part in an insulating bolt according to the first embodiment of the present invention.

[0046] FIG. 8 is a drawing showing the second tool coupled to the second coupling part in an insulating bolt according to the first embodiment of the present invention.

[0047] FIG. 9 is a drawing showing the third tool separated from the outer surface connected to the first surface of the tooling part in an insulating bolt according to the first embodiment of the present invention.

[0048] FIG. 10 is a drawing showing the third tool in an insulating bolt according to the first embodiment of the present invention coupled to an outer surface connected to the first surface of the tooling part.

[0049] FIG. 11 is a schematic perspective view of an insulating bolt assembly according to a second embodiment of the present invention.

[0050] FIG. 12 is a schematic exploded perspective view of an insulating bolt according to a second embodiment of the present invention.

[0051] FIG. 13 is a cross-sectional view of an insulating bolt according to a second embodiment of the present invention.

[0052] FIG. 14 is a perspective view of an insulating cover member according to a second embodiment of the present invention.

[0053] FIG. 15 is a drawing of a battery pack including insulating bolts according to each embodiment of the present invention.

[0054] FIG. 16 is a drawing illustrating a car including the battery pack of FIG. 15.

[0055] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0056] In the drawings, the size of each component or specific part constituting the component is exaggerated, omitted, or schematically depicted for convenience and clarity of explanation. Accordingly, the size of each component does not entirely reflect its actual size. If it is determined that a detailed description of related known functions or configurations could unnecessarily obscure the essence of the invention, such description shall be omitted.

[0057] As used in this specification, the terms "combination" or "connection" include not only cases where one member and another member are directly joined or directly connected, but also cases where one member is indirectly joined or indirectly connected to another member through a connecting member.

[0058] Meanwhile, contents common to parts described in any one embodiment of the present invention may also be applied to other embodiments. For example, contents common to parts described in the first embodiment of the second embodiment may be replaced by the description of the first embodiment described above, and such common contents may also be applied to the second embodiment. Furthermore, contents described in the second embodiment that are applicable to the first embodiment may also be applied to the first embodiment. The same applies to other embodiments.

[0059] In this specification, "release" means the release of a fastened bolt, that is, loosening a tightened bolt.

[0060] FIG. 1 is a schematic assembled perspective view of an insulating bolt according to a first embodiment of the present invention, FIG. 2 is a schematic exploded perspective view of an insulating bolt according to a first embodiment of the present invention, FIG. 3 is a cross-sectional view of an insulating bolt according to a first embodiment of the present invention, FIG. 4 is a perspective view showing the lower side of a protective member in an insulating bolt according to a first embodiment of the present invention, FIG. 5 is a drawing showing a first tool separated from a first coupling part in an insulating bolt according to a first embodiment of the present invention, FIG. 6 is a drawing showing a first tool coupled to a first coupling part in an insulating bolt according to a first embodiment of the present invention, FIG. 7 is a drawing showing a second tool separated from a second coupling part in an insulating bolt according to a first embodiment of the present invention, FIG. 8 is a drawing showing a second tool coupled to a second coupling part in an insulating bolt according to a first embodiment of the present invention, FIG. 9 is a drawing showing a third tool separated from an outer surface connected to a first surface of a tooling part in an insulating bolt according to a first embodiment of the present invention, FIG. 10 is a first embodiment of the present invention This is a drawing illustrating the appearance of a third tool connected to an outer surface connected to the first surface of a tooling part in an insulating bolt.

[0061] An insulating bolt (10) according to one embodiment of the present invention is used in a battery pack. For example, it is used to fasten various electrical components included inside the battery pack. Since electrical components inside the battery pack can be electrically connected and thus pose a fire hazard, it is advantageous to use an insulating bolt (10) for connecting the electrical components inside the battery pack. Accordingly, an insulating bolt (10) according to one embodiment of the present invention is configured to have insulating properties to fasten the electrical components inside the battery pack.

[0062] Referring to FIGS. 1 to 4, an insulating bolt (10) according to one embodiment of the present invention includes a fastening member (100) and a protective member (200).

[0063] Referring to FIGS. 1 and 2, a first coupling portion (111) is formed in the fastening member (100) to which a first tool (21, see FIG. 5) is coupled. Then, the fastening member (100) is coupled to an object (not shown).

[0064] The object includes various items fastened by an insulating bolt (10), and may include, for example, various electrical components such as a busbar or battery cell provided inside a battery pack. That is, the insulating bolt (10) according to one embodiment of the present invention fastens and fixes an electrically connected busbar or battery cell. However, the object is not limited to a busbar or battery cell.

[0065] Here, the first tool (21) may include various tools (20) capable of connecting the fastening member (100) to an object. The first coupling part (111) formed on the head part (110) may be formed as a polygonal groove including a hexagonal groove. For example, the first coupling part (111) may include polygonal grooves such as a triangular groove, a square groove, a pentagonal groove, or a hexagonal groove. When the first coupling part (111) is formed as a hexagonal groove, the first tool (21) may be a hexagonal wrench having a size corresponding to the hexagonal groove of the first coupling part (111). However, the first tool (21) is not limited to a hexagonal wrench, and when the first coupling part (111) is formed as a polygonal groove, the first tool (21) may have a shape corresponding to the polygonal groove of the first coupling part (111).

[0066] The fastening member (100) may be formed of a metal material with consideration for rigidity. However, the material of the fastening member (100) is not limited to metal, and the fastening member (100) may be made of other materials as long as it has sufficient rigidity.

[0067] The fastening member (100) also has the function of releasing the fastening of the fastening member (100) when the protective member (200) is damaged. A detailed explanation of this will be provided later.

[0068] Referring to FIGS. 2 and FIGS. 3, the fastening member (100) may be configured to include a head portion (110) and a leg portion (120).

[0069] A first coupling portion (111) to which a first tool (21) is coupled may be formed in the head portion (110). Here, the first coupling portion (111) of the head portion (110) may be formed in various ways, for example, as shown in FIG. 2, it may be formed as a hexagonal groove. And, as shown in FIG. 5, the first tool (21) may be composed of a hexagonal wrench that can be coupled to the first coupling portion (111).

[0070] Here, the first coupling part (111) may be formed as a polygon other than a hexagon, and in this case, the first tool (21) may have a shape corresponding to the polygon of the first coupling part (111) so that it can be coupled to the first coupling part (111). That is, the first coupling part (111) formed in the head part (110) may be formed as a polygonal groove such as a triangular groove, a square groove, a pentagonal groove, a hexagonal groove, etc. (in addition, heptagonal grooves, octagonal grooves, and more polygonal grooves).

[0071] However, for the convenience of explanation, the following description focuses on the case where the first connecting part (111) is a hexagonal groove and the first tool (21) is a hexagonal wrench that can be inserted into the hexagonal groove of the first connecting part (111) to fasten or unfasten the fastening member (100).

[0072] The head portion (110) can be made of various types of metal, but is not limited thereto, and as mentioned above, it can be made of a material other than metal as long as it has sufficient rigidity.

[0073] As shown in FIG. 6, the first tool (21), which is a hexagonal wrench, is coupled to the first coupling part (111), which is a hexagonal groove. Here, when the operator rotates the hexagonal wrench in a first direction (e.g., clockwise), the fastening member (100) is fastened to the object, and when the operator rotates it in a second direction (e.g., counterclockwise), which is opposite to the first direction, the fastening member (100) is released from the object.

[0074] The leg portion (120) extends from the head portion (110). Additionally, screw threads may be formed on the leg portion (120). That is, when the first tool (21) is coupled to the first coupling portion (111) of the head portion (110) and rotates, the leg portion (120) can be coupled to an object in a screw coupling manner.

[0075] The leg portion (120) can be made of various types of metal, just like the head portion (110), but is not limited thereto.

[0076] Referring to FIGS. 1 to 3, the protective member (200) is formed of an electrically insulating material and is configured to surround a part of the fastening member (100). Since the fastening member (100) is made of a metal material and has electrical conductivity, the protective member (200) formed of an electrically insulating material is configured to surround the fastening member (100) to block the electrical conductivity of the fastening member (100).

[0077] The protective member (200) can be made of various materials having electrical insulation properties, and, for example, can be composed of various plastics, but the material is not limited thereto.

[0078] Additionally, the protective member (200) can be manufactured to surround the fastening member (100) by injection molding of plastic, but the manufacturing method is not limited to injection molding.

[0079] The protective member (200) protects the fastening member (100) and is also composed of an electrically insulating material to block the electrical conductivity of the fastening member (100), and has a tooling function formed by a second coupling part (225) to which a second tool (22) can be coupled.

[0080] The insulating bolt (10) according to the first embodiment of the present invention can basically be fastened to an object through a protective member (200). Then, if the protective member (200) is damaged (for example, if the protective member (200) is made of plastic material, it may be damaged during the fastening or unfastening process) and cannot be used, the insulating bolt (10) fastened to the object can be released through a fastening member (100). This is explained in detail below.

[0081] Referring to FIGS. 1 to 3, the protective member (200) may include a fastening member protection part (210) and a tooling part (220).

[0082] Referring to FIG. 3, a part of the fastening member (100) is inserted into the fastening member protection part (210). A part of the fastening member (100) may be formed in a polygon, and the fastening member protection part (210) may also be formed in a polygon. For example, as in FIG. 2, when a part of the fastening member (100), for example, the head part (110) of the fastening member (100), is formed in a hexagon, the fastening member protection part (210) is also formed in a hexagon, as in FIG. 4. However, the shape of the head part (110) of the fastening member (100) and the shape of the fastening member protection part (210) are not limited to a hexagon, and may be more diverse, such as a triangle, square, pentagon, heptagon, octagon, etc.

[0083] Referring to FIGS. 1 and 2, the tooling portion (220) is located on the opposite side of the fastening member protection portion (210). Additionally, a second coupling portion (225) is formed in the tooling portion (220) to which a second tool (22, see FIG. 7) can be coupled.

[0084] Here, the second coupling part (225) formed in the tooling part (220) can be formed in various ways, for example, as shown in FIG. 2, it can be formed as a hexagonal groove. And, the second tool (22) can be composed of a hexagonal wrench that can be coupled to the second coupling part (225) as shown in FIG. 7.

[0085] However, the second coupling part (225) may be formed as a polygon other than a hexagon, and in this case, the second tool (22) may have a shape corresponding to the polygon of the second coupling part (225) so that it can be coupled to the second coupling part (225). However, for convenience of explanation, the following description will focus on the case where the second coupling part (225) is a hexagonal groove and the second tool (22) is a hexagonal wrench that can be inserted into the hexagonal groove of the second coupling part (225) to fasten or unfasten the fastening member (100).

[0086] As shown in FIG. 8, a second tool (22), which is a hexagonal wrench, is coupled to a second coupling part (225), which is a hexagonal groove. Here, when the worker rotates the hexagonal wrench in a first direction (e.g., clockwise), the fastening member (100) is fastened to the object, and when the worker rotates it in a second direction opposite to the first direction (e.g., counterclockwise), the fastening member (100) is released from the object.

[0087] The second connecting part (225) may be formed as a polygonal groove having a larger size than the first connecting part (111). For example, referring to FIGS. 1 and 2, the second connecting part (225) may be formed as a hexagonal groove having a larger size than the first connecting part (111). Accordingly, the second tool (22) may be a hexagonal wrench having a larger size than the first tool (21). However, the shape of the second connecting part (225) is not limited to a hexagonal groove, and the second tool (22) is not limited to a hexagonal wrench.

[0088] The tooling part (220) may be configured to include a first surface (221), a second surface (222), and a third surface (223).

[0089] The first surface (221) is formed at a preset position. For example, in FIG. 1, the upper side of the tooling part (220) is the first surface (221). Then, the second surface (222) is formed by being inserted into the lower side of the first surface (221). Then, the third surface (223) extends from the second surface (222) and is formed parallel to the first surface (221).

[0090] Here, the second surface (222) and the third surface (223) can each be formed as polygons. For example, the second surface (222) and the third surface (223) can be formed as hexagons, in which case the second connecting part (225) is formed on the second surface (222), and the second tool (22) contacts the second surface (222). Of course, the second tool (22) may also contact the third surface (223).

[0091] Here, referring to FIG. 3, a through hole (226) having a size and shape corresponding to the first coupling part (111) is formed in the third surface (223), and the first tool (21) passes through the through hole (226) of the third surface (223) and is coupled to the first coupling part (111) of the head part (110).

[0092] Referring to FIGS. 9 and 10, the third tool (23) can be coupled to an outer surface (224) connected to a first surface (221) of the tooling part (220). To this end, the outer surface (224) connected to the first surface (221) can be formed in a shape corresponding to the shape of the third tool (23).

[0093] The outer surface (224) connected to the first surface (221) can be formed as a polygon. For example, if the third tool (23) is formed as a hexagon, the outer surface (224) connected to the first surface (221) can also be formed as a hexagon.

[0094] The third tool (23) may be formed differently from the first tool (21) and the second tool (22). That is, the first tool is inserted into the hexagonal groove which is the first coupling part (111), and the second tool (22) is also inserted into the hexagonal groove which is the second coupling part (225), but the third tool (23) has a hexagonal groove formed in the third tool (23) itself, and the tooling part (220) of the protective member (200) is inserted into the hexagonal groove of the third tool (23). However, the third tool (23) is not limited to this.

[0095] The insulating bolt (10) according to the first embodiment of the present invention can use all three types of tools (20), for example, the first tool (21), the second tool (22), and the third tool (23).

[0096] Of course, the insulating bolt (10) can be fastened to the object using the first tool (21), but typically the insulating bolt (10) is fastened to the object using the second tool (22) or the insulating bolt (10) is fastened to the object using the third tool (23).

[0097] However, there are cases where the insulating bolt (10) attached to the object must be released in order to replace or repair the object after the insulating bolt (10) has been attached to the object. In this case, typically, the worker uses a second tool (22) or a third tool (23) to release the insulating bolt (10) attached to the object from the object, thereby allowing the replacement or repair of the object to proceed.

[0098] However, if the protective member (200) of the insulating bolt (10) is formed of an insulating material with low rigidity, such as plastic, for example, it may be damaged by various causes. For example, if the protective member (200) is damaged while the insulating bolt (10) is firmly fastened to an object, and the first coupling part (111) is not formed on the head part (110) of the fastening member (100), it may be very difficult or impossible to release the fastening member (100) from the object.

[0099] In preparation for such a case, a first coupling portion (111) to which a first tool (21) can be coupled is formed in the head portion (110) of the fastening member (100), and as described above, when the protective member (200) is damaged, the worker can remove the fastening member (100) from the object by coupling the first tool (21) to the first coupling portion (111) of the head portion (110) of the fastening member (100).

[0100] The insulating bolt (10) according to the first embodiment of the present invention is capable of electrical insulation and is also easy to release (in particular, even when the protective member (200) is damaged, the fastening member (100) is easy to release), and the components inside the battery pack can be easily repaired or replaced by releasing the fastening bolt, and the electrical insulation of the bolt can prevent the occurrence of flame.

[0101] That is, the insulating bolt (10) according to the first embodiment of the present invention has the advantage that, in addition to the advantage that the insulating bolt (10) can be fastened to an object using all three types of tools (20), the insulating bolt (10) can be easily removed from an object even if the protective member (200) of the insulating bolt (10) is damaged.

[0102] FIG. 11 is a schematic assembled perspective view of an insulating bolt according to a second embodiment of the present invention, FIG. 12 is a schematic exploded perspective view of an insulating bolt according to a second embodiment of the present invention, FIG. 13 is a cross-sectional view of an insulating bolt according to a second embodiment of the present invention, and FIG. 14 is a perspective view of an insulating cover member according to a second embodiment of the present invention.

[0103] The second embodiment has a structural difference from the first embodiment in that an insulating cover member (300) is coupled to a protective member (200) to completely electrically insulate the fastening member (100). However, depending on the need, an insulating bolt (10) of the first embodiment may be used, or an insulating bolt (10) of the second embodiment may be used.

[0104] Referring to FIGS. 11 to 13, the insulating cover member (300) can be coupled to the second surface (222) of the tooling portion (220) of the protective member (200). The insulating cover member (300) is composed of various types of insulating materials and, for example, may be made of silicone, but is not limited thereto.

[0105] And, referring to FIG. 14, the insulating cover member (300) may include a main body part (310) and an insertion part (320). The main body part (310) is formed in a shape corresponding to the second surface (222) and is coupled to the second surface (222). And, the insertion part (320) is formed in a shape corresponding to the through hole (226) formed on the third surface (223) and is inserted into the through hole (226).

[0106] Here, referring to FIG. 13, the insertion portion (320) can be inserted up to the first coupling portion (111) formed in the head portion (110) of the fastening member (100).

[0107] In this way, the insulating cover member (300) completely covers the fastening member (100) on the upper side of the fastening member (100) to electrically insulate it.

[0108] And, when the insulating cover member (300) is coupled to the protective member (200) (see FIG. 11), the second tool (22) can rotate in contact with the second surface (222), thereby fastening or releasing the fastening member (100). That is, even when the insulating cover member (300) is coupled to the protective member (200), the operator can fasten the insulating bolt (10) to the object or release the insulating bolt (10) fastened to the object.

[0109] FIG. 15 is a drawing of a battery pack including insulating bolts according to each embodiment of the present invention.

[0110] Referring to FIG. 15, a battery pack (40) according to one embodiment of the present invention may include one or more insulating bolts (10) according to each embodiment of the present invention described above.

[0111] Additionally, the battery pack (40) may include various types of battery cells, for example, pouch-type battery cells, cylindrical battery cells, or prismatic battery cells.

[0112] In addition, the battery pack (40) may further include a pack case (41) and various devices for controlling the charging and discharging of battery cells, such as a BMS, a current sensor, a fuse, etc.

[0113] Here, when the battery pack (40) includes a pouch-type battery cell (30), the pouch-type battery cell (30) may be stored directly in the pack case (41), as in FIG. 15. Alternatively, although not shown in the drawings, the pouch-type battery cell may be stored in the module case of a battery module, and the battery module in which the pouch-type battery cell is stored may be stored in the pack case (41).

[0114] FIG. 16 is a drawing illustrating a car including the battery pack of FIG. 15.

[0115] Referring to FIG. 16, a vehicle (50) according to one embodiment of the present invention may include one or more battery packs (40) according to each embodiment of the present invention described above. Here, the battery pack (40) may include one or more insulating bolts (10) according to each embodiment of the present invention described above.

[0116] Here, the above-mentioned automobile (50) includes various automobiles configured to use electricity, such as electric vehicles or hybrid vehicles, for example.

[0117] In this specification, where terms indicating directions such as up, down, left, and right are used, these terms are used merely for convenience of explanation, and it is obvious to those skilled in the art that they may vary depending on the location of the object or the position of the observer.

[0118] Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims set forth below by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed above should be considered in an illustrative rather than a restrictive sense. That is, the scope of the true technical spirit of the present invention is indicated in the claims, and all variations within the equivalent scope thereof should be interpreted as being included in the present invention.

[0119] The present invention relates to an insulating bolt, a battery pack including the same, and an automobile including the battery pack, and is particularly applicable to industries related to secondary batteries.

Claims

1. As an insulating bolt used in a battery pack, A first coupling portion is formed to which a first tool is coupled, and a fastening member is fastened to an object; and An insulating bolt comprising a protective member formed of an insulating material and configured to surround a part of the fastening member, and having a second coupling portion formed therein to which a second tool can be coupled.

2. In Paragraph 1, An insulating bolt characterized in that the above-mentioned fastening member is formed of a metal material.

3. In Paragraph 2, The above fastening member is, A head portion having a first coupling portion formed to which the first tool is coupled; and An insulating bolt characterized by including a leg portion that extends from the head portion and has screw threads formed thereon.

4. In Paragraph 3, An insulating bolt characterized in that the first coupling portion formed in the head portion is formed as a polygonal groove.

5. In Paragraph 1, The above protective member is, A fastening member protection part into which a part of the above-mentioned fastening member is inserted; and An insulating bolt characterized by including a tooling portion located on the opposite side of the above-mentioned fastening member protection portion and having a second coupling portion formed therein to which the second tool can be coupled.

6. In Paragraph 5, A part of the above-mentioned fastening member is formed in a polygon, and An insulating bolt characterized in that the above-mentioned fastening member protection part is also formed in a polygonal shape.

7. In Paragraph 4, An insulating bolt characterized in that the second joint is formed as a polygonal groove having a larger size than the first joint.

8. In Paragraph 5, The above tooling part is, First surface of a preset position; A second surface formed by being inserted into the lower side of the first surface; and It includes a third surface extending from the second surface and formed parallel to the first surface, An insulating bolt characterized by having a through hole formed on the third surface having a size and shape corresponding to the first joint.

9. In Paragraph 8, An insulating bolt characterized in that the second coupling portion is formed on the second surface and the second tool contacts the second surface.

10. In Paragraph 8, An insulating bolt characterized in that the second surface is formed as a polygon.

11. In Paragraph 8, An insulating bolt characterized in that the outer surface connected to the first surface is formed in a shape corresponding to the shape of the third tool so that the third tool is coupled to the outer surface connected to the first surface.

12. In Paragraph 8, An insulating bolt characterized in that the outer surface connected to the first surface is formed in a polygon.

13. In Paragraph 8, An insulating bolt characterized by including an insulating cover member coupled to the second surface.

14. In Paragraph 13, The above insulating cover member is, A main body portion formed in a shape corresponding to the second surface and coupled to the second surface; and An insulating bolt characterized by including an insertion part formed in a shape corresponding to the through hole and inserted into the through hole.

15. In Paragraph 14, An insulating bolt characterized in that the above-mentioned insertion part is inserted up to the above-mentioned first coupling part.

16. A battery pack comprising an insulating bolt according to any one of claims 1 to 15.

17. An automobile comprising a battery pack pursuant to paragraph 16.

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