Battery case with high voltage battery

Abstract

The present invention introduces a battery case equipped with a high-voltage battery, wherein a load path is formed around the high-voltage connector upon the occurrence of a collision to avoid damage to the high-voltage connector, and overall collision rigidity is secured including the area around the high-voltage connector, thereby ensuring stability against collision.

Description

Technology Field

[0001] The present invention relates to a battery case equipped with a high-voltage battery, and more specifically, to a battery case equipped with a high-voltage battery that prevents damage to the high-voltage connector in the event of a collision. Background Technology

[0003] Recently, interest in eco-friendly vehicles has been rising due to factors such as environmental issues and high oil prices, and various driving modules utilizing electric energy are being developed.

[0004] For example, in the automotive sector, pure electric vehicles (battery-powered EVs), fuel cell electric vehicles (fuel cell EVs) that use fuel cells as electric motors, and hybrid electric vehicles (hybrid EVs) that use both electric motors and engines are being developed.

[0005] In particular, electric vehicles are equipped with battery modules for storing electrical energy, and these modules accommodate multiple battery cell units within a battery housing. Such battery modules must prevent damage to the battery cell units from external impacts.

[0006] Accordingly, the battery case housing the battery module is configured to protect the battery module in the event of a collision. In particular, a high-voltage connector for the electrical connection of the battery module is exposed within the battery case; since the high-voltage connector protrudes from the battery case, there is a risk of fire caused by the connector being damaged if other components, such as the suspension, strike it during a collision.

[0008] The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. Prior art literature

[0010] JP 2017-193289 A (2017.10.26) The problem to be solved

[0011] The present invention is proposed to solve these problems and aims to provide a battery case equipped with a high-voltage battery that ensures the stability of the high-voltage battery by preventing damage to the high-voltage connector in the event of a collision. means of solving the problem

[0013] A battery case equipped with a high-voltage battery according to the present invention for achieving the above objective comprises: a battery floor comprising a side sill that is arranged on each side and extends in the front-rear direction, and a front sill that extends laterally and connects the side sills, and is provided with an electrical component including a battery, and has a connector connected to the electrical component in front of the front sill; an extension floor comprising a side member that is coupled to the front end of the battery floor and is coupled to the side sill to form a load path, and a front member that is extended laterally to connect the side member and has an opening formed in a portion facing the connector; and a reinforcing structure disposed in the opening inside the extension floor, formed to surround the connector, and disposed to support the front sill and the front member to form a load path.

[0014] The extension floor is characterized by having both side members extend forward from the side sill with an inward slope, and a front member connected to the end of each side member.

[0015] The extension floor is characterized by having a space formed by opening the lower end of the opening in the vertical direction below the opening.

[0016] The space is characterized by being extended longer than the widthwise length of the connector and being open from the front member to the connector.

[0017] The lower part of the extension floor is characterized by having a cover portion that is detachably mounted to the space portion to close the space portion.

[0018] The battery floor is characterized by having a plurality of reinforcing members that are spaced apart along the longitudinal direction of the front sill and extend forward from the front sill to form a load path by connecting to a side member or a front member.

[0019] The reinforcing structure is characterized by comprising: a reinforcing member that is provided in plurality along the longitudinal direction of the front seal and is positioned on both sides of the connector with the connector as the center and coupled to the front seal; and a reinforcing bracket that is formed to surround the connector and is coupled to the reinforcing member and the front member to form a load path.

[0020] The reinforcing member is composed of a first part coupled to a reinforcing bracket and a second part coupled to a front sill, and is characterized in that the first part is formed to be longer upward than the second part.

[0021] The first part is characterized by having a lower front end formed to slope backward, and an upper rear end extended to slope backward and connected to the second part.

[0022] The reinforcing bracket is characterized by being composed of a side wall portion that is connected to the front member and is spaced apart from the opening and arranged to face each other in a pair, and a connecting portion that connects the pair of side wall portions, is connected to the reinforcing portion, and has a through hole formed through which a connector passes.

[0023] The side wall and reinforcing portion of the reinforcing bracket are characterized by being arranged in a straight line in the front-rear direction. Effects of the invention

[0025] A battery case equipped with a high-voltage battery having the structure described above forms a load path around the high-voltage connector upon collision, thereby avoiding damage to the high-voltage connector, and ensures stability against collision by securing overall collision rigidity including the area around the high-voltage connector. Brief explanation of the drawing

[0027] FIGS. 1 to 3 are drawings showing a battery case equipped with a high-voltage battery according to the present invention. FIG. 4 is a drawing for explaining the load path of a battery case in which the high-voltage battery shown in FIG. 1 is mounted. FIGS. 5 and 6 are drawings for explaining the reinforcing structure of a battery case in which a high-voltage battery shown in FIG. 1 is mounted. Specific details for implementing the invention

[0028] Hereinafter, a battery case equipped with a high-voltage battery according to a preferred embodiment of the present invention will be examined with reference to the attached drawings.

[0030] FIGS. 1 to 3 are drawings showing a battery case equipped with a high-voltage battery according to the present invention, FIG. 4 is a drawing for explaining the load path of the battery case equipped with a high-voltage battery shown in FIG. 1, and FIGS. 5 to 6 are drawings for explaining the reinforcing structure of the battery case equipped with a high-voltage battery shown in FIG. 1.

[0032] As shown in FIGS. 1 to 6, a battery case equipped with a high-voltage battery according to the present invention comprises a battery floor (100) having side sills (110) arranged on each side and extending in the front-rear direction, and a front sill (120) extending laterally to connect the side sills (110), and having an electrical component including a battery provided therein, and a connector (130) connected to the electrical component in front of the front sill (120); and an extension floor (200) comprising a side member (210) coupled to the front end of the battery floor (100) and coupled to the side sill (110) to form a load path, and a front member (220) extending laterally to connect the side member (210) and having an opening (221) formed in a portion facing the connector (130) that is open. and includes a reinforcing structure (300) positioned in an opening (221) inside an extension floor (200), formed to surround a connector (130), and positioned to support a front seal (120) and a front member (220) to form a load path.

[0033] Thus, the present invention comprises a battery floor (100), an extension floor (200), and a reinforcing structure (300). Here, the battery floor (100) is provided with side sills (110) on both sides, and a front sill (120) is provided in front of the side sills (110) to connect the two side sills (110). In this battery floor (100), an end sill (150) may be provided at the rear of the side sills (110), and a plurality of cross members (160) may be provided between the front sill (120) and the side sills (110), and a center chamber (170) connecting the cross members (160) may be provided. Through this, an electrical component including a battery can be mounted on the battery floor (100).

[0034] An extension floor (200) is coupled to the front end of the battery floor (100). If the connector (130) is provided on the end seal (150) side, the extension floor (200) may be provided at the rear end of the battery floor (100).

[0035] In the case of the extension floor (200), it consists of a side member (210) that is coupled to the side sill (110) and a front member (220) that connects the side member (210). Thus, the extension floor (200) is formed such that the side member (210) is coupled to the side sill (110) of the battery floor (100), thereby forming a load path in which the load caused by a collision is distributed to the front member (220), side member (210), front sill (120), and side sill (110). Additionally, an opening (221) is formed in the front member (220) of the extension floor (200) in the part facing the connector (130), so that the connector (130) is exposed forward through the opening (221). Thus, an opening (221) is formed in the front member (220) in front of the connector (130), making it easy to connect an external electrical line to the connector (130) and to perform operations of the connector (130) through the opening (221).

[0036] Meanwhile, a reinforcing structure (300) is provided inside the extension floor (200) to reinforce the rigidity around the opening (221) where the connector (130) is provided. This reinforcing structure (300) is positioned at the opening (221) inside the extension floor (200) and is formed to surround the connector (130), thereby protecting the connector (130) from being struck by other parts that move due to a collision. In addition, the reinforcing structure (300) is positioned to be supported by the front sill (120) and the front member (220) to form a load path, so that collision rigidity is secured by the load path, in which the load caused by the collision is distributed to the front member (220), the reinforcing structure (300), and the front sill (120) when a front collision occurs. As a result, even if a collision occurs in front of the connector (130), the impact from other parts is avoided, and the collision load is distributed by the load path between the extension floor (200), the reinforcing structure (300), and the battery floor (100), thereby safely protecting the electrical components including the battery.

[0038] To explain the invention described above in detail, as can be seen in FIGS. 2 and FIGS. 4, the extension floor (200) has two side members (210) that extend forward from the side sill (110) with an inward slope, and a front member (220) is connected to the end of each side member (210).

[0039] That is, the side members (210) forming the extended floor (200) are extended diagonally at an acute angle with respect to the front sill (120), and the front members (220) are connected to the ends of both side members (210), so that the load generated during a collision can be smoothly distributed to the front sill (120) and the side sill (110) of the battery floor (100). In addition, as the side members (210) are extended with an inward slope, collision rigidity against a frontal collision is secured, and collision rigidity against a frontal collision is also improved.

[0040] Here, the extension floor (200) may have its lower end open in the vertical direction below the opening (221) to form a space (230). As can be seen in FIG. 3, as the space (230) is formed below the opening (221) in the extension floor (200), the connector (130) is exposed from the lower side of the extension floor (200) through the space (230). Thus, as the space (230) is formed downward along with the opening (221) in the front-to-back direction in the extension floor and the connector (130) is exposed, it is easy to connect other components, such as electrical lines connected to the connector (130). This space (230) is extended longer than the width-direction length of the connector (130) and is open from the front member (220) to the connector (130), so that the connector (130) can be exposed forward and downward. That is, if the space portion (230) is formed to be shorter than the width direction length of the connector (130), the space for working on the connector (130) becomes narrow. Therefore, it is extended to be longer than the width direction length of the connector (130), and the connection from the front member (220) to the connector (130) is made so that it is easy for the work tool and the worker's hand to reach the connector (130).

[0041] That is, typically, the battery case is mounted on the underside of the vehicle, and as the vehicle is lifted during work on the battery case, the worker must perform the work on the underside of the battery case. Accordingly, a space (230) is formed on the lower side of the opening (221) in the extension floor (200) so that the worker can easily perform work on the connector (130) by inserting a hand or a work tool into the opening (221) and the space (230). As a result, when the worker performs work on the connector (130), work convenience is ensured as the worker can perform work on the connector (130) through the opening (221) and the space (230).

[0042] Here, a cover portion (240) may be provided at the bottom of the extension floor (200) to be detachably mounted in the space portion (230) and to close the space portion (230). In this way, by mounting the cover portion (240) in the space portion (230) of the extension floor (200), the connector (130) is protected from contamination and impact caused by foreign substances generated from the lower side of the extension floor (200). Additionally, as the cover portion (240) closes and fills the space portion (230), the reduction in rigidity caused by the empty space formed by the space portion (230) is reinforced, thereby improving the overall rigidity of the extension floor (200). Furthermore, since the cover portion (240) can be detachably mounted at the bottom of the extension floor (200) by bolting or riveting (B), the cover portion (240) can be detached depending on whether the connector (130) is in operation.

[0044] Meanwhile, as can be seen in FIGS. 4 and 5, the battery floor (100) may further be provided with a plurality of reinforcing members (140) that are spaced apart along the longitudinal direction of the front sill (120) and extend forward from the front sill (120) to form a load path by connecting to a side member (210) or a front member (220).

[0045] In this way, the front seal (120) and the side member (210) or the front seal (120) and the front member (220) are connected through the reinforcing member (140), thereby allowing the connection structure of each member to maintain a more robust and stable connection state. Additionally, the front member (220) and the front seal (120) or the side member (210) and the front seal (120) form a load path through the reinforcing member (140), thereby dispersing the load resulting from a collision and improving collision performance. This reinforcing member (140) extends across the extension floor (200) in the front-rear direction and can be positioned spaced apart from various electrical components and reinforcing brackets (320).

[0047] Meanwhile, as can be seen in FIGS. 5 and 6, the reinforcing structure (300) may include a plurality of reinforcing members (310) arranged along the longitudinal direction of the front seal (120) and positioned on both sides of the connector (130) with the connector (130) as the center and coupled to the front seal (120); and a reinforcing bracket (320) formed to surround the connector (130) and coupled to the reinforcing members (310) and the front member (220) to form a load path.

[0048] The reinforcing structure (300) is intended to protect the connector (130) in the event of a collision and is composed of a reinforcing member (310) and a reinforcing bracket (320) to prevent impact that may be applied to the connector (130). Specifically, the reinforcing bracket (320) is coupled to the front member (220) to disperse the collision load generated from the front, and since it is made of a rigid body, it protects the connector (130) from direct impact. The reinforcing member (310) is positioned on both sides of the connector (130) and is coupled to the reinforcing bracket (320) and the front seal (120) to form a load path. As a result, the load resulting from the collision is distributed to the front member (220), the reinforcing bracket (320), the reinforcing member (310), and the front seal (120), thereby preventing damage to the connector (130) caused by the collision.

[0049] In particular, the reinforcing member (310) is composed of a first part (311) coupled to a reinforcing bracket (320) and a second part (312) coupled to a front sill (120), and the first part (311) may be formed to be longer upward than the second part (312). The first part (311) and the second part (312) are formed to form a closed cross-section, and each may be configured to have a plurality of flanges (313) extending across the internal space. The first part (311) and the second part (312) may be formed integrally, and the first part (311) may be formed to be longer upward than the second part (312) so that when a collision occurs, the first part (311) may be deformed from the second part (312). That is, when a frontal collision occurs, the first part (311) of the reinforcing member (310) is formed to extend further upward than the second part (312), so that the first part (311) is deformed to bend at the second part (312). As a result, the front member (220) is deformed and the reinforcing bracket (320) is moved backward, so that the load from the frontal collision can be efficiently offset.

[0050] Here, the first part (311) is formed such that the front end of the lower portion slopes backward, and the rear end of the upper portion extends backward and can be connected to the second part (312). That is, as shown in FIG. 6, the lower portion of the first part (311) is formed such that the front end slopes backward, thereby inducing the upper portion of the first part (311) to bend when a frontal collision occurs, and the upper portion of the first part (311) is extended backward and the rear end extends backward, thereby securing a supporting force against the frontal collision load so that the collision load is efficiently offset. In this way, the reinforcing portion (310) can be formed in a '』' shape through the first part (311) and the second part (312), and can support the frontal collision load while simultaneously efficiently offsetting the collision load through deformation, thereby avoiding damage to the connector (130).

[0052] Meanwhile, as can be seen in FIG. 5, the reinforcing bracket (320) may be formed with a pair of side wall portions (321) that are positioned facing each other but spaced apart from the opening (221) and connected to the front member (220), and a connecting portion (322) that connects the pair of side wall portions (321), is connected to the reinforcing portion (310), and has a through hole (323) through which the connector (130) passes. That is, the reinforcing bracket (320) is formed with a pair of side wall portions (321) and a connecting portion (322) that connects them, so that one side is open and the open portion can be installed to match the opening (221) of the extension floor (200). Here, the side wall portion (321) can be spaced apart and connected to the front member (220) with a width greater than that of the opening (221), and a through hole (323) is formed in the connecting portion (322) connecting the side wall portion (321) so that the connector (130) can be exposed forward through the through hole (323). The through hole (323) can be formed to match the connector (130) so that the connector (130) is firmly fixed, or it can be formed larger than the connector (130) so that the gap caused by deformation of the reinforcing portion (310) described above is absorbed.

[0053] In addition, the side wall portion (321) and the reinforcement portion (310) of the reinforcement bracket (320) are arranged in a straight line in the front-rear direction so that the side wall portion (321) and the reinforcement portion (310) form a load path, allowing the load caused by the collision to be transmitted smoothly.

[0055] A battery case equipped with a high-voltage battery having a structure as described above forms a load path around the high-voltage connector (130) in the event of a collision, thereby avoiding damage to the high-voltage connector (130), and ensures overall collision rigidity including the area around the high-voltage connector (130), thereby ensuring stability against collision.

[0057] Although the present invention has been illustrated and described in relation to specific embodiments, it will be obvious to those skilled in the art that the present invention can be modified and changed in various ways without departing from the technical spirit of the invention as provided by the following claims. Explanation of the symbols

[0059] 100: Battery Floor 110: Side Sill 120: Front room 130: Connector 140: Reinforcement Members 200: Extension Floor 210: Side Member 220: Front Member 221: Open section 230: Spatial section 240: Cover section 300: Reinforcement structure 310: Reinforcement section 311: Part 1 312: Part 2 313: Flange 320: Reinforcement bracket 321: Side wall 322: Connection part 323: Through hole

Claims

Claim 1 A battery case equipped with a high-voltage battery comprising: a battery floor comprising side sills arranged on each side and extending in the front-rear direction, and a front sill extending to cross laterally and connecting the side sills, wherein electrical components including a battery are provided, and a connector connected to the electrical components is provided in front of the front sill; an extension floor comprising a side member coupled to the front end of the battery floor and coupled with the side sills to form a load path, and a front member extending laterally to connect the side members and having an opening formed in a portion facing the connector; and a reinforcing structure disposed in the opening inside the extension floor, formed to surround the connector, and disposed to support the front sills and front members, forming a load path together with the front members and front sills. Claim 2 A battery case equipped with a high-voltage battery according to claim 1, wherein the extension floor is characterized in that both side members extend forward from the side sill with an inward slope, and a front member is coupled to the end of each side member. Claim 3 A battery case for mounting a high-voltage battery according to claim 1, characterized in that the extension floor has a lower end that is open in the vertical direction below the opening to form a space. Claim 4 A battery case for mounting a high-voltage battery according to claim 3, characterized in that the space portion extends longer than the widthwise length of the connector and is open from the front member to the connector. Claim 5 A battery case for mounting a high-voltage battery according to claim 3, characterized in that the lower part of the extension floor is provided with a cover portion that is detachably mounted to the space portion and closes the space portion. Claim 6 A battery case for mounting a high-voltage battery according to claim 1, characterized in that the battery floor further comprises a plurality of reinforcing members spaced apart along the longitudinal direction of the front seal and extending forward from the front seal to form a load path by connecting to a side member or a front member. Claim 7 A battery case for mounting a high-voltage battery according to claim 1, wherein the reinforcing structure comprises: a plurality of reinforcing members arranged along the longitudinal direction of the front seal and coupled to the front seal by being positioned on both sides of the connector with the connector as the center; and a reinforcing bracket formed to surround the connector and coupled to the reinforcing members and the front member to form a load path. Claim 8 A battery case for mounting a high-voltage battery according to claim 7, wherein the reinforcing part is composed of a first part coupled to a reinforcing bracket and a second part coupled to a front seal, and the first part is formed to be longer upward than the second part. Claim 9 A battery case equipped with a high-voltage battery according to claim 8, characterized in that the first part has a lower front end formed to be inclined toward the rear, and an upper rear end extended to be inclined toward the rear and connected to the second part. Claim 10 A battery case for mounting a high-voltage battery according to claim 7, characterized in that the reinforcing bracket is arranged to face each other in pairs, spaced apart longer than the opening, and comprises a side wall portion coupled to the front member, and a connecting portion that connects the pair of side wall portions, is coupled to the reinforcing portion, and has a through hole formed through which a connector passes. Claim 11 A battery case for mounting a high-voltage battery according to claim 10, characterized in that the side wall portion and the reinforcing portion of the reinforcing bracket are arranged in a straight line in the front-rear direction.

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