Mounting structure for power storage device

By designing a battery pack fixing structure including multiple brackets and fixing parts, the problem of insufficient tolerance absorption of the electric vehicle battery pack in the vertical direction is solved, and the stable and flexible installation of the battery pack at the bottom of the electric vehicle is achieved.

JP2025055656APending Publication Date: 2025-04-08TOYOTA JIDOSHA KK +2
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Patent Information

Application Number
JP2023165021
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-27
Publication Date
2025-04-08

AI Technical Summary

Technical Problem

The tolerance absorption capacity of the fixed structure of the existing electric vehicle battery pack in the vertical direction is insufficient, resulting in a high mismatch problem during installation.

Method used

A battery pack fixing structure including a first and a second bracket, a first to fourth fixing member is designed. The first bracket has a side fixing part and a lifting part. The side fixing part is fixed to the side of the battery pack by a first fixing member. The lifting part can be adjusted in a vertical direction. The second bracket is connected to the first bracket and the battery pack by a third and fourth fixing members to form an adjustable fixing structure.

Benefits of technology

Through this structure, the installation of the battery pack on the bottom of the electric vehicle can be fine-tuned in the vertical direction, solving the problem of insufficient tolerance absorption and improving the stability and flexibility of installation.

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Abstract

To provide a mounting structure for a power storage device capable of absorbing tolerance in a vertical direction.SOLUTION: A mounting structure 1 for a power storage device includes a power storage device 10, a first bracket 100, a second bracket 200, a first fastening member B1, a second fastening member B2, a third fastening member B3, and a fourth fastening member B4. The first bracket 100 has a first plate portion 110 having a side fixing portion 112 and an extension portion 114, and a second plate portion 120. The second bracket 200 has an upper fixing portion 210 and a movable fixing portion 220. A first elongated hole h1 is formed in the side fixing portion 112, and a second elongated hole h2 is formed in at least one of the extension portion 114 and the movable fixing portion 220.SELECTED DRAWING: Figure 2
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Description

[Technical field]

[0001] The present disclosure relates to a mounting structure for an electricity storage device. [Background technology]

[0002] For example, Japanese Patent No. 6024895 discloses a structure for mounting a battery pack to the bottom of an electric vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6024895 Summary of the Invention [Problem to be solved by the invention]

[0004] In the battery pack mounting structure described in Japanese Patent No. 6024895, when the battery pack is mounted to the electric vehicle using bolts or the like, tolerances, particularly in the vertical direction (height direction), may not be able to be accommodated.

[0005] An object of the present disclosure is to provide a mounting structure for an electricity storage device that is capable of accommodating tolerances in the vertical direction. [Means for solving the problem]

[0006] A mounting structure for an energy storage device according to one aspect of the present disclosure includes an energy storage device, a first bracket for connecting the energy storage device to a bottom of a vehicle body, a second bracket for connecting the energy storage device to the first bracket, a first fastening member for fixing the first bracket to the energy storage device, a second fastening member for fixing the first bracket to the bottom of the vehicle body, a third fastening member for fixing the second bracket to the energy storage device, and a fourth fastening member for fixing the second bracket to the first bracket, wherein the first bracket has a side fixing portion fixed to a side of the energy storage device by the first fastening member, and an extension portion extending upward from the side fixing portion. The second bracket has a first plate portion and a second plate portion extending laterally from the upper end of the extension portion and fixed to the bottom portion of the vehicle body by the second fastening member, the second bracket has an upper fixed portion fixed to the upper part of the storage device by the third fastening member, and a movable fixed portion extending upward from the upper fixed portion and fixed to the extension portion by the fourth fastening member so as to be movable in the vertical direction relative to the extension portion, and a first long hole is formed in the side fixed portion whose vertical length is greater than the diameter of the first fastening member, and at least one of the extension portion and the movable fixed portion is formed with a second long hole whose vertical length is greater than the diameter of the fourth fastening member. Effect of the Invention

[0007] According to the present disclosure, it is possible to provide a mounting structure for an electricity storage device that is capable of accommodating tolerances in the vertical direction. [Brief description of the drawings]

[0008] [Figure 1] 1 is a bottom view showing a schematic view of a mounting structure for an electricity storage device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] 13 is a cross-sectional view that illustrates a schematic modification of the mounting structure for the electricity storage device. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present disclosure will now be described with reference to the accompanying drawings, in which the same or corresponding components are designated by the same reference numerals.

[0010] Fig. 2 is a bottom view showing a schematic view of the mounting structure for an electricity storage device according to an embodiment of the present disclosure. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. This mounting structure for an electricity storage device 1 is preferably applied to a vehicle, for example, and is particularly preferably applied to the front or rear of an electricity storage device 10 in the front-rear direction of the vehicle.

[0011] 1 and 2, the mounting structure 1 for an electricity storage device includes an electricity storage device 10, a first bracket 100, a second bracket 200, a first fastening member B1, a second fastening member B2, a third fastening member B3, and a fourth fastening member B4. In this embodiment, bolts are used as the fastening members B1 to B4.

[0012] The power storage device 10 includes a plurality of power storage cells (not shown). Each power storage cell may be, for example, a lithium ion battery.

[0013] The first bracket 100 is a bracket for connecting the electricity storage device 10 and the bottom 20 of the vehicle body. The first bracket 100 is formed in a substantially L-shape. The first bracket 100 is fixed to the electricity storage device 10 by a first fastening member B1, and is fixed to the bottom 20 by a second fastening member B2. The first bracket 100 has a first plate portion 110 and a second plate portion 120.

[0014] The first plate portion 110 is a portion that is fixed to a side portion of the energy storage device 10. The first plate portion 110 is formed in a flat plate shape. The first plate portion 110 has a side fixing portion 112 and an extending portion 114.

[0015] The side fixing portion 112 is fixed to a side of the energy storage device 10 by a first fastening member B1. The side fixing portion 112 is formed with a first elongated hole h1 whose length in the up-down direction is greater than the diameter of the first fastening member B1.

[0016] The extending portion 114 extends upward from the side fixing portion 112. The extending portion 114 is formed with a second elongated hole h2 whose length in the up-down direction is greater than the diameter of the second fastening member B2.

[0017] The second plate portion 120 extends laterally from the upper end of the extension portion 114. The second plate portion 120 is formed in a flat plate shape. The second plate portion 120 is substantially perpendicular to the first plate portion 110. The second plate portion 120 is fixed to the bottom portion 20 of the vehicle body by a second fastening member B2.

[0018] The second bracket 200 is a bracket for connecting the energy storage device 10 and the first bracket 100. The second bracket 200 is formed in a substantially L-shape. The second bracket 200 is fixed to the energy storage device 10 by a third fastening member B3, and is fixed to the first bracket 100 by a fourth fastening member B4. The second bracket 200 has an upper fixing portion 210 and a movable fixing portion 220.

[0019] The upper fixing part 210 is fixed to the upper part of the electricity storage device 10 by a third fastening member B3. The upper fixing part 210 is formed in a flat plate shape.

[0020] The moving fixed part 220 extends upward from the upper fixed part 210. The moving fixed part 220 is formed in a flat plate shape. The moving fixed part 220 is substantially perpendicular to the upper fixed part 210. The moving fixed part 220 is fixed to the extending part 114 by a fourth fastening member B4 so as to be movable in the up and down direction relative to the extending part 114. The moving fixed part 220 is in contact with the extending part 114. The position of the upper end of the moving fixed part 220 is set lower than the position of the upper end of the extending part 114.

[0021] As described above, in the mounting structure 1 for the storage battery device of this embodiment, the first long hole h1 is formed in the side fixing portion 112 and the second long hole h2 is formed in the extension portion 114, making it possible to adjust the vertical position of the storage battery device 10 relative to the vehicle body.

[0022] As shown in FIG. 3, the second slot h2 may be formed in the moving fixed portion 220.

[0023] It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the following aspects.

[0024] [Aspect 1] A power storage device; a first bracket for connecting the power storage device to a bottom of a vehicle body; a second bracket for connecting the power storage device and the first bracket; a first fastening member that fixes the first bracket to the power storage device; a second fastening member that fastens the first bracket to the bottom portion of the vehicle body; a third fastening member that fixes the second bracket to the power storage device; and a fourth fastening member that fastens the second bracket to the first bracket, The first bracket is a first plate portion including a side fixing portion fixed to a side portion of the power storage device by the first fastening member and an extension portion extending upward from the side fixing portion; a second plate portion extending laterally from an upper end of the extension portion and fixed to the bottom portion of the vehicle body by the second fastening member; The second bracket is an upper fixing portion fixed to an upper portion of the power storage device by the third fastening member; a movable fixing portion extending upward from the upper fixing portion and fixed to the extension portion by the fourth fastening member so as to be movable in the vertical direction relative to the extension portion; The side fixing portion is formed with a first elongated hole having a length in a vertical direction larger than a diameter of the first fastening member, A mounting structure for an electricity storage device, wherein a second elongated hole having a vertical length greater than a diameter of the fourth fastening member is formed in at least one of the extension portion and the movable fixed portion.

[0025] In this mounting structure for the storage battery device, a first long hole is formed in the side fixing portion, and a second long hole is formed in at least one of the extension portion and the movable fixing portion, making it possible to adjust the vertical position of the storage battery device relative to the vehicle body.

[0026] It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present disclosure is indicated by the claims, not by the description of the above embodiments, and further includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0027] 1 Mounting structure for energy storage device, 10 Energy storage device, 20 Bottom, 100 First bracket, 110 First plate portion, 112 Side fixing portion, 114 Extension portion, 120 Second plate portion, 200 Second bracket, 210 Upper fixing portion, 220 Movable fixing portion, B1 First fastening member, B2 Second fastening member, B3 Third fastening member, B4 Fourth fastening member, h1 First long hole, h2 Second long hole.

Claims

[Claim 1] A power storage device; a first bracket for connecting the power storage device to a bottom of a vehicle body; a second bracket for connecting the power storage device and the first bracket; a first fastening member that fixes the first bracket to the power storage device; a second fastening member that fastens the first bracket to the bottom portion of the vehicle body; a third fastening member that fixes the second bracket to the power storage device; and a fourth fastening member that fastens the second bracket to the first bracket, The first bracket is a first plate portion including a side fixing portion fixed to a side portion of the power storage device by the first fastening member and an extension portion extending upward from the side fixing portion; a second plate portion extending laterally from an upper end of the extension portion and fixed to the bottom portion of the vehicle body by the second fastening member; The second bracket is an upper fixing portion fixed to an upper portion of the power storage device by the third fastening member; a movable fixing portion extending upward from the upper fixing portion and fixed to the extension portion by the fourth fastening member so as to be movable in the up and down direction relative to the extension portion, A first elongated hole having a length in a vertical direction larger than a diameter of the first fastening member is formed in the side fixing portion, A mounting structure for an electricity storage device, wherein a second elongated hole having a vertical length greater than a diameter of the fourth fastening member is formed in at least one of the extension portion and the movable fixed portion.

Citation Information

Patent Citations

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