How to remove the battery pack and battery module

Abstract

A battery pack (10) comprises an accommodation body (200) and a battery module (100) that is accommodated in the accommodation body (200). The battery module (100) has defined therein a left tapped hole (132) and a right tapped hole (134) that overlap at least a portion of the accommodation body (200).

Description

Technical Field

[0001] The present invention relates to a method for removing a battery pack and a battery module.

Background Art

[0002] In recent years, various battery packs including a plurality of battery modules have been developed. For example, in the battery module described in Patent Document 1, the battery module is fixed to a housing. In this battery module, a heat conductive member is provided between the battery module and the housing. The heat conductive member is formed by coating.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, in the battery pack described in Patent Document 1, the battery module may be removed from the housing. However, simply lifting the battery module from the housing may be difficult to improve the workability of removing the battery module from the housing. For example, the battery module itself may be relatively heavy. In this case, it may be difficult to lift the battery module. Further, when the battery module and the housing are joined via a heat conductive member, it may be difficult to peel off the battery module from the housing.

[0005] An example of the object of the present invention is to improve the workability of removing the battery module from the housing. Other objects of the present invention will become apparent from the description herein.

Means for Solving the Problems

[0006] One aspect of the present invention is as follows: [1] Containment and, The battery module housed in the aforementioned housing, Equipped with, A battery pack in which the battery module defines tapped holes that overlap with at least a portion of the housing. [2] The battery pack according to [1], wherein the tapped hole is located in at least one of the substantially central portion of the battery module in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module, and in a portion of the battery module offset from the substantially central portion toward the side where the tapped hole is located, from the side where at least a portion of the housing is located. [3] The battery pack according to [1], wherein the tapped hole is located in the approximate central part of the battery module in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module. [4] The battery pack according to any one of [1] to [3], wherein at least two of the tapped holes are located in areas of the battery module that are opposite to each other. [5] The battery pack according to any one of [1] to [4], wherein at least a portion of the housing is at least a portion of a frame surrounding at least a portion of the battery module. [6] The process involves screwing a through member into the tapped hole of the battery module housed in the housing, The process of further screwing the through member into the tapped hole while at least a portion of the through member and at least a portion of the housing that overlaps with the tapped hole are in contact with each other, A method for removing the battery module, which includes the following features. [7] The method for removing a battery module according to [6], wherein the tapped hole is located in at least one of the following: the approximate central portion of the battery module in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module, and the portion of the battery module offset from the approximate central portion toward the side where the tapped hole is located, from the side where at least one part of the housing is located. [8] The method for removing a battery module according to [6], wherein the tapped hole is located in the approximate central part of the battery module in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module. [9] A method for removing a battery module according to any one of [6] to [8], wherein at least two of the tapped holes are provided in areas of the battery module that are opposite to each other.

[10] A method for removing a battery module according to any one of [6] to [9], wherein the housing comprises at least a portion of a frame surrounding at least a portion of the battery module.

[11] A method for removing a battery module according to any one of [6] to

[10] , further comprising the step of pulling up the through member while the through member is screwed into the tapped hole, thereby pulling up the battery module. [Effects of the Invention]

[0007] According to the above embodiment of the present invention, the ease of removing the battery module from the housing can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of the battery pack according to the embodiment. [Figure 2] This is a plan view of the battery pack according to the embodiment with the upper case removed. [Figure 3] This is a plan view of a battery module according to an embodiment. [Figure 4]It is a sectional view taken along line A-A of FIG. 3. [Figure 5] It is a diagram for explaining an example of a method for removing a battery module from a lower case. [Figure 6] It is a diagram for explaining an example of a method for removing a battery module from a lower case.

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, similar components are denoted by similar reference numerals, and the description thereof will be omitted as appropriate.

[0010] FIG. 1 is a perspective view of a battery pack 10 according to an embodiment. FIG. 2 is a plan view of a state in which an upper case 220 is removed from the battery pack 10 according to the embodiment.

[0011] In the embodiment, the battery pack 10 is mounted on an automobile. Specifically, the battery pack 10 is mounted between the front and rear wheels of the automobile. Hereinafter, unless otherwise specified, the battery pack 10 is described as being mounted on an automobile. However, the battery pack 10 is also applicable to uses other than automobiles.

[0012] In each figure, for the sake of explanation, the X direction, the Y direction, and the Z direction are shown. The X direction indicates the front-rear direction of the battery pack 10. The Y direction is orthogonal to the X direction. The Y direction indicates the left-right direction of the battery pack 10. The Z direction is orthogonal to both the X direction and the Y direction. The Z direction indicates the up-down direction of the battery pack 10. The arrow indicating the X direction, the arrow arrow indicating the Y direction, and the arrow indicating the Z direction respectively indicate the front direction, the left direction, and the up direction of the battery pack 10. In FIG. 2, the white circle with a black dot indicating the Z direction indicates that the arrow indicating the Z direction extends from the back of the paper toward the front. However, the relationship between the X direction, the Y direction, and the Z direction and the front-rear direction, the left-right direction, and the up-down direction of the battery pack 10 is not limited to this example.

[0013] In this embodiment, the front-to-back, left-to-right, and up-to-down directions of the battery pack 10 are determined by the vehicle in which the battery pack 10 is mounted. The X, Y, and Z directions represent the front-to-back, left-to-right, and up-to-down directions of the vehicle, respectively. The arrows pointing to the X, Y, and Z directions represent the front, left, and up directions of the vehicle, respectively. However, the relationship between the front-to-back, left-to-right, and up-to-down directions of the battery pack 10 and the front-to-back, left-to-right, and up-to-down directions of the vehicle is not limited to this example.

[0014] Hereafter, where necessary, the direction perpendicular to the Z direction will be referred to as the horizontal direction.

[0015] The battery pack 10 comprises four battery modules 100 and a housing 200. The four battery modules 100 include a left-side pair of battery modules 100 aligned in the X direction and a right-side pair of battery modules 100 aligned in the X direction. The housing 200 has a lower case 210 and an upper case 220. The lower case 210 may generally be referred to as, for example, a tray or main body. The lower case 210 includes a lower plate 212 and a side frame 214. The upper case 220 may generally be referred to as, for example, a cover or lid. As will be described later, each battery module 100 has a plurality of battery cells 102.

[0016] A pair of terminals 104 are provided at the front of the side frame 214. The pair of terminals 104 are arranged approximately parallel to each other in the Y direction. The front end of each terminal 104 protrudes forward from the front surface of the side frame 214. In the electrical path, the four battery modules 100 are connected in series between the pair of terminals 104.

[0017] The lower case 210 and the upper case 220 are attached to each other via a sealing material 230. The lower case 210, the upper case 220, and the sealing material 230 form a housing space 250. Four battery modules 100 are housed in the housing space 250.

[0018] The lower plate 212 defines the bottom of the storage space 250. The side frame 214 defines the lateral portion of the storage space 250. Specifically, viewed from the Z direction, the side frame 214 is provided along the outermost periphery of the lower plate 212. The upper case 220 defines the top of the storage space 250.

[0019] The sealing material 230 is, for example, an elastic material such as rubber. Viewed from the Z direction, the sealing material 230 is provided around the entire circumference of the side frame 214. As a result, viewed from the Z direction, the sealing material 230 surrounds the housing space 250. Therefore, the housing space 250 can be sealed from the space outside the housing 200 by the sealing material 230.

[0020] The number and arrangement of the battery modules 100 are not limited to the examples according to this embodiment. For example, the number of battery modules 100 may be only two, only three, or five or more.

[0021] Figure 3 is a plan view of the battery module 100 according to the embodiment. Figure 4 is a cross-sectional view of AA in Figure 3. In Figure 4, the white circle with an X indicating the X direction indicates that the arrow pointing in the X direction extends from the front to the back of the page.

[0022] As shown in Figure 4, the battery module 100 has a cell stack 102G and a housing case 110.

[0023] The cell stack 102G contains multiple battery cells 102. In the example shown in Figure 4, the multiple battery cells 102 are stacked substantially parallel to each other in the Y direction. For example, in the cell stack 102G, multiple groups of battery cells, each containing multiple battery cells 102 connected in parallel, are connected in series. Alternatively, multiple single battery cells 102 may be connected in series.

[0024] The housing case 110 houses the cell laminate 102G. The housing case 110 includes a left cover 112, a right cover 114, a lower cover 116, an upper cover 118, a front cover (not shown), and a rear cover (not shown). The left cover 112 covers the left side of the cell laminate 102G. The right cover 114 covers the right side of the cell laminate 102G. The lower cover 116 covers the bottom surface of the cell laminate 102G via a thermally conductive adhesive 116a. The upper cover 118 covers the top surface of the cell laminate 102G. The front cover (not shown) covers the front surface of the cell laminate 102G. The rear cover (not shown) covers the rear surface of the cell laminate 102G.

[0025] The lower plate 212 includes an upper cooling plate 212a and a lower cooling plate 212b. The upper cooling plate 212a and the lower cooling plate 212b overlap in the Z direction. Coolant 212c flows in the region between the lower surface of the upper cooling plate 212a and the upper surface of the lower cooling plate 212b. Coolant 212c is a liquid, such as water.

[0026] The lower case 210 includes a support frame 216. Viewed from the Z direction, the support frame 216 is a surrounding body that encloses at least a portion of the cell stack 102G. The support frame 216 is provided on the upper surface of the upper cooling plate 212a. Hereinafter, the portion of the support frame 216 located to the left of the cell stack 102G will be referred to as the left support portion 216a, as needed. Hereinafter, the portion of the support frame 216 located to the right of the cell stack 102G will be referred to as the right support portion 216b, as needed.

[0027] A left projection 122 is provided on the left outer surface of the left cover 112. The left projection 122 protrudes to the left of the left cover 112. The left projection 122 is located on the upper surface of the left support portion 216a. The left projection 122 and the left support portion 216a are fastened to each other by a plurality of left bolts 162. As shown in Figure 3, the plurality of left bolts 162 are arranged substantially parallel to each other in the X direction. However, the number and arrangement of the left bolts 162 are not limited to the example shown in Figure 3. For example, the left projection 122 and the left support portion 216a may be fastened to each other by only a single left bolt 162.

[0028] A light projection 124 is provided on the right outer surface of the light cover 114. The light projection 124 protrudes to the right of the light cover 114. The light projection 124 is located on the upper surface of the light support portion 216b. The light projection 124 and the light support portion 216b are fastened to each other by a plurality of light bolts 164. As shown in Figure 3, the plurality of light bolts 164 are arranged substantially parallel to each other in the X direction. However, the number and arrangement of the light bolts 164 are not limited to the example shown in Figure 3. For example, the light projection 124 and the light support portion 216b may be fastened to each other by only a single light bolt 164.

[0029] The battery module 100 is mounted on the lower plate 212 via a filler 150. The filler 150 is positioned between the lower surface of the lower cover 116 and the upper surface of the upper cooling plate 212a. The filler 150 is compressed in the Z direction by the lower surface of the lower cover 116 and the upper surface of the upper cooling plate 212a.

[0030] In this embodiment, the filler 150 is a thermally conductive adhesive. Therefore, the lower surface of the lower cover 116 and the upper surface of the upper cooling plate 212a are physically joined via the filler 150. As a result, the lower cover 116 and the upper cooling plate 212a are less likely to shift relative to each other compared to the case where the filler 150 is not provided. Furthermore, the lower surface of the lower cover 116 and the upper surface of the upper cooling plate 212a are thermally bonded via the filler 150. As a result, compared to the case where the filler 150 is not provided, the heat generated in the battery module 100 can more easily escape to the lower case 210 via the thermally conductive adhesive 116a, the lower cover 116, and the filler 150.

[0031] Figures 5 and 6 illustrate an example of how to remove the battery module 100 from the lower case 210. Hereinafter, the method of removing the battery module 100 from the lower case 210 will be referred to as the "battery module 100 removal method" as needed. An example of the battery module 100 removal method will be explained with reference to Figures 5 and 3.

[0032] As shown in Figure 5, the left projection 122 defines the left tap hole 132. The left tap hole 132 penetrates the left projection 122 substantially parallel to the Z direction. The left tap hole 132 overlaps with the left support portion 216a in the Z direction. The left projection 122 and the left tap hole 132 are located in the approximate center of the battery module 100 in a direction substantially parallel to the Z direction. The right projection 124 defines the right tap hole 134. The right tap hole 134 penetrates the right projection 124 substantially parallel to the Z direction. The right tap hole 134 overlaps with the right support portion 216b in the Z direction. The left tap hole 132 and the right tap hole 134 are located in the approximate center of the battery module 100 in a direction substantially parallel to the Z direction.

[0033] The approximate central portion of the battery module 100 in a direction substantially parallel to the Z direction is the portion of the battery module 100 located at approximately equal distances from the lower surface of the lower cover 116 and the upper surface of the upper cover 118 in a direction substantially parallel to the Z direction. The approximate central portion of the battery module 100 in a direction substantially parallel to the Z direction includes not only the exact central portion of the battery module 100 in a direction substantially parallel to the Z direction, but also the portion shifted by a predetermined distance in the Z direction from the exact central portion of the battery module 100 in a direction substantially parallel to the Z direction. This predetermined distance is within a range that a person skilled in the art would understand to achieve the intended purpose by the central portion of the battery module 100 in a direction substantially parallel to the Z direction. For example, the approximate central portion of the battery module 100 in a direction substantially parallel to the Z direction may be shifted in the Z direction by a distance of 10% or less, 7.5% or less, or 5.0% or less of the Z-direction dimension of the battery module 100 from the exact central portion of the battery module 100 in a direction substantially parallel to the Z direction.

[0034] A left eyebolt 172 can be inserted through the left tapped hole 132. Specifically, the left eyebolt 172 can be screwed into the left tapped hole 132. As described above, the left projection 122 and the left tapped hole 132 are located approximately in the center of the battery module 100 in a direction approximately parallel to the Z direction. Therefore, compared to the case where the left projection 122 and the left tapped hole 132 are offset downward from the approximately center of the battery module 100 in a direction approximately parallel to the Z direction, the accessibility of the left eyebolt 172 to the left tapped hole 132 from above the left projection 122 can be improved, and the workability of removing the battery module 100 can be improved. In addition, compared to the case where the left projection 122 and the left tap hole 132 are offset upward from the approximate center of the battery module 100 in a direction substantially parallel to the Z direction, it is easier to secure space for routing busbars, harnesses, and other wiring above the left projection 122. Therefore, when the left projection 122 and the left tap hole 132 are located in the approximate center of the battery module 100 in a direction substantially parallel to the Z direction, it is easier to achieve both ease of removal of the battery module 100 and ease of securing space for routing wiring.

[0035] A light eyebolt 174 can be inserted through the light tap hole 134. Specifically, the light eyebolt 174 can be screwed into the light tap hole 134. As described above, the light projection 124 and the light tap hole 134 are located approximately in the center of the battery module 100 in a direction approximately parallel to the Z direction. Therefore, compared to the case where the light projection 124 and the light tap hole 134 are located below the approximately center of the battery module 100 in a direction approximately parallel to the Z direction, the accessibility of the light eyebolt 174 to the light tap hole 134 from above the light projection 124 can be improved, and the workability of removing the battery module 100 can be improved. In addition, compared to the case where the light projection 124 and the light tap hole 134 are offset upward from the approximately center of the battery module 100 in a direction approximately parallel to the Z direction, it is easier to secure space for routing wiring such as busbars and harnesses above the light projection 124. Therefore, when the light projection 124 and the light tap hole 134 are located approximately in the center of the battery module 100 in a direction substantially parallel to the Z direction, it is possible to achieve both ease of removal of the battery module 100 and ease of securing space for wiring.

[0036] In the example shown in Figure 5, with the left bolt 162 already removed from the left projection 122 and the left support portion 216a, the left eyebolt 172 is screwed into the left tapped hole 132 from above the left projection 122, so that the lower end of the left eyebolt 172 passes through the left tapped hole 132 and contacts the upper surface of the left support portion 216a. Similarly, with the right bolt 164 already removed from the right projection 124 and the right support portion 216b, the right eyebolt 174 is screwed into the right tapped hole 134 from above the right projection 124, so that the lower end of the right eyebolt 174 passes through the right tapped hole 134 and contacts the upper surface of the right support portion 216b.

[0037] Next, in the example shown in Figure 5, with the lower end of the left eyebolt 172 in contact with the upper surface of the left support portion 216a, the left eyebolt 172 is further screwed into the left tapped hole 132. By further tightening (i.e., screwing in) the left eyebolt 172 with its lower end in contact with the upper surface of the left support portion 216a, the left projection 122 is lifted upward relative to the left support portion 216a. In other words, the left tapped hole 132 and the left eyebolt 172 constitute at least part of a screw jack that lifts the left projection 122 upward relative to the left support portion 216a. 、 In the example shown in Figure 5, with the lower end of the light eyebolt 174 in contact with the upper surface of the light support portion 216b, the light eyebolt 174 is further screwed into the light tap hole 134. By further tightening (i.e., screwing in) the light eyebolt 174 with its lower end in contact with the upper surface of the light support portion 216b, the light projection 124 is lifted upward relative to the light support portion 216b. In other words, the light tap hole 134 and the light eyebolt 174 constitute at least part of a screw jack that lifts the light projection 124 upward relative to the light support portion 216b. This allows the lower surface of the lower cover 116 to be peeled upward from the filler 150.

[0038] In this embodiment, the ease of removing the battery module 100 from the lower case 210 can be improved compared to simply lifting the battery module 100 from the lower case 210. Specifically, in this embodiment, the battery module 100 can be lifted away from the lower case 210 by the left eyebolt 172 and the right eyebolt 174. Therefore, it is easier to lift the battery module 100 away from the lower case 210 compared to simply lifting the battery module 100 away from the lower case 210. In particular, in this embodiment, even if the battery module 100 itself is relatively heavy, it is easier to lift the battery module 100 away from the lower case 210 compared to simply lifting the battery module 100 away from the lower case 210. Furthermore, in this embodiment, even if the lower surface of the lower cover 116 and the upper surface of the upper cooling plate 212a are joined to each other via the filler 150, the lower surface of the lower cover 116 can be easily peeled upward from the filler 150 using the left eyebolt 172 and the right eyebolt 174.

[0039] In this embodiment, the left eyebolt 172 and the right eyebolt 174 penetrate the left projection 122 and the right projection 124 in the Z direction, respectively, through the left tapped hole 132 and the right tapped hole 134. Therefore, by improving the rigidity of the left projection 122 and the right projection 124, the load on the battery cells 102 and the housing case 110 when the battery module 100 is lifted by the left eyebolt 172 and the right eyebolt 174 and removed from the filler 150 can be reduced. Thus, in this embodiment, reinforcement to reduce the load on the battery cells 102 and the housing case 110 when the battery module 100 is lifted and removed from the filler 150 can be eliminated.

[0040] In this embodiment, when the battery module 100 is lifted by the left eyebolt 172 and the right eyebolt 174, the lower ends of the left eyebolt 172 and the right eyebolt 174 are in contact with the upper surface of the left support portion 216a and the right support portion 216b, respectively. If the lower plate 212 is not provided with the left support portion 216a and the right support portion 216b, and the lower ends of the left eyebolt 172 and the right eyebolt 174 are in contact with the upper surface of the lower plate 212 to lift the battery module 100, then if the thickness of the lower plate 212 in the Z direction is relatively thin, the lower plate 212 may deform due to the force received from the lower ends of the left eyebolt 172 and the right eyebolt 174. Alternatively, if reinforcing members such as ribs are provided on the upper surface of the lower plate 212 at the points where they contact the lower ends of the left eyebolt 172 and the right eyebolt 174 to prevent deformation of the lower plate 212, the cost of the lower plate 212 may increase. In contrast, in this embodiment, even if the thickness of the lower plate 212 in the Z direction is relatively thin, deformation of the lower plate 212 can be suppressed by the force received from the lower ends of the left eyebolt 172 and the right eyebolt 174 when lifting the battery module 100, eliminating the need to provide the aforementioned reinforcing members on the upper surface of the lower plate 212.

[0041] As shown in Figure 3, the left projection 122 is provided with two left tap holes 132. The right projection 124 is provided with two right tap holes 134. That is, the two left tap holes 132 and the two right tap holes 134 are located in opposite regions of the battery module 100 in the Y direction. In addition, the left tap holes 132 and the right tap holes 134 are located at approximately the same height in the Z direction. In this case, compared to cases where tap holes are provided in only one region of the battery module 100 in the Y direction, or where the left tap holes 132 and the right tap holes 134 are located at different heights in the Z direction, the battery module 100 can be easily removed from the lower case 210. However, the tap holes may be provided in only one region of the battery module 100 in the Y direction. Also, the left tap holes 132 and the right tap holes 134 may be located at different heights in the Z direction.

[0042] The two left tap holes 132 are positioned opposite each other in the X direction with respect to the X-direction center of the left projection 122. Therefore, compared to the case where only one left tap hole 132 is provided in the left tap hole 132, it is possible to lift the left projection 122 away from the left support portion 216a. Similarly, the two right tap holes 134 are positioned opposite each other in the X direction with respect to the X-direction center of the right projection 124. Therefore, compared to the case where only one right tap hole 134 is provided in the right tap hole 134, it is possible to lift the right projection 124 away from the right support portion 216b. However, the left projection 122 may be provided with only one left tap hole 132. Similarly, the right projection 124 may be provided with only one right tap hole 134.

[0043] In this embodiment, left eyebolt 172 and right eyebolt 174 are used as through members that are screwed into the left tapped hole 132 and the right tapped hole 134 to lift the battery module 100 away from the lower case 210. Therefore, compared to the case in which ordinary bolts are used, as shown in Figure 6, it is possible to easily hook a lifting member 180 such as a wire onto the rings on the heads of each of the left eyebolt 172 and the right eyebolt 174. As shown in Figure 6, the battery module 100 can be lifted by lifting the left eyebolt 172 and the right eyebolt 174 with the lifting member 180 while they are screwed into the left tapped hole 132 and the right tapped hole 134, respectively. Furthermore, in this embodiment, as described above, the left projection 122, the right projection 124, the left tapped hole 132, and the right tapped hole 134 are located approximately in the center of the battery module 100 in a direction substantially parallel to the Z direction. Therefore, compared to the case where the left projection 122, right projection 124, left tapped hole 132, and right tapped hole 134 are offset in the Z direction from the approximate center of the battery module 100 in a direction substantially parallel to the Z direction, the lifting member 180 can be hooked onto or near the center of gravity of the battery module 100 in the Z direction, and the battery module 100 can be stably lifted by the lifting member 180. However, the through member that is screwed into the left tapped hole 132 and right tapped hole 134 to lift the battery module 100 away from the lower case 210 is not limited to an eye bolt, but may be, for example, a regular bolt. Also, the method of attaching the lifting member 180 to the left eye bolt 172 and right eye bolt 174 is not limited to hooking. Also, the method of lifting the left eye bolt 172 and right eye bolt 174 is not limited to the method using the lifting member 180. For example, the left eye bolt 172 and right eye bolt 174 may be lifted by the worker's hand.

[0044] The left projection 122, the right projection 124, the left tapped hole 132, and the right tapped hole 134 may be located not in the approximate center of the battery module 100 in a direction substantially parallel to the Z direction, but in a portion shifted upward from the approximate center of the battery module 100. When the left projection 122 and the left tapped hole 132 are located in a portion shifted upward from the approximate center of the battery module 100, access to the left tapped hole 132 of the left eyebolt 172 from above the left projection 122 can be improved compared to when the left projection 122 and the left tapped hole 132 are located in a portion shifted downward from the approximate center of the battery module 100, thereby improving the workability of removing the battery module 100. When the light projection 124 and the light tap hole 134 are located in a position shifted upward from the approximate center of the battery module 100, access to the light tap hole 134 of the light eye bolt 174 from above the light projection 124 can be improved compared to when the light projection 124 and the light tap hole 134 are located in a position shifted downward from the approximate center of the battery module 100, thereby improving the ease of removing the battery module 100.

[0045] The embodiments of the present invention have been described above with reference to the drawings, but these are merely examples of the present invention, and various other configurations can also be adopted.

[0046] This application claims priority based on Japanese Patent Application No. 2022-178020, filed on 7 November 2022, and incorporates all of its disclosures herein. [Explanation of Symbols]

[0047] 10 Battery pack, 100 Battery module, 102 Battery cell, 102G cell stack, 104 Terminal, 110 Housing case, 112 Left cover, 114 Right cover, 116 Lower cover, 116a Thermal conductive adhesive, 118 Upper cover, 122 Left projection, 124 Right projection, 132 Left tapped hole, 134 Right tapped hole, 150 Filler, 162 Left bolt, 164 Right bolt, 172 Left eyebolt, 174 Right eyebolt, 180 Lifting member, 200 Housing, 210 Lower case, 212 Lower plate, 212a Upper cooling plate, 212b Lower cooling plate, 212c Refrigerant, 214 Side frame, 216 Support frame, 216a Left support section, 216b Right support section, 220 Upper case, 230 sealing material, 250 storage space

Claims

1. A battery module and A housing for the aforementioned battery module, Equipped with, The battery module comprises a plurality of battery cells and a housing case that houses the plurality of battery cells. The housing case includes a first cover that covers the lower surface of the plurality of battery cells, a second cover that covers the upper surface of the plurality of battery cells, a third cover that covers the sides of the plurality of battery cells, and a projection provided on the third cover. The aforementioned projection defines the tapped hole, The housing comprises a lower plate, a side frame, an upper case, and a support portion positioned above the lower plate. The tapped hole is located above the support portion of the battery pack.

2. The battery pack according to claim 1, wherein the tapped hole is located in at least one of the following: the approximate central portion of the battery module in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module, and the portion of the battery module offset from the approximate central portion toward the side where the support portion of the housing is located toward the side where the tapped hole is located.

3. The battery pack according to claim 1, wherein the tapped hole is located in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module, in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module.

4. The battery pack according to claim 1, wherein the tapped hole is located in the central portion of the battery module in the vertical direction of the battery module, or is located above or below the central portion of the battery module by a distance of 10% or less of the vertical dimension of the battery module.

5. The battery pack according to any one of claims 1 to 4, wherein at least two of the tapped holes are provided in areas of the battery module that are opposite to each other.

6. A method for removing a battery module comprising a plurality of battery cells and a housing case for housing the plurality of battery cells, wherein the housing case includes a first cover covering the lower surface of the plurality of battery cells, a second cover covering the upper surface of the plurality of battery cells, a third cover covering the sides of the plurality of battery cells, and a projection provided on the third cover for defining tapped holes, A step of screwing a through member into the tapped hole located above the support portion of the battery module housed in a housing having a lower plate, a side frame, and a support portion positioned above the lower plate, The process of further screwing the through member into the tapped hole while at least a portion of the through member and at least a portion of the support portion of the housing are in contact with each other, A method for removing the battery module, which includes the following features.

7. The method for removing a battery module according to claim 6, wherein the tapped hole is located in at least one of the following: the approximate central portion of the battery module in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module, and the portion of the battery module offset from the approximate central portion toward the side where the support portion of the housing is located toward the side where the tapped hole is located.

8. The method for removing a battery module according to claim 6, wherein the tapped hole is located in a direction substantially parallel to the direction in which the tapped hole penetrates the battery module, in a portion substantially in the center of the battery module.

9. The method for removing a battery module according to claim 6, wherein the tapped hole is located in the central part of the battery module in the vertical direction of the battery module, or is located above or below the central part of the battery module by a distance of 10% or less of the vertical dimension of the battery module.

10. A method for removing a battery module according to any one of claims 6 to 9, wherein at least two of the tapped holes are provided in areas of the battery module that are opposite to each other.

11. A method for removing a battery module according to any one of claims 6 to 9, further comprising the step of pulling up the through member while the through member is screwed into the tapped hole, thereby pulling up the battery module.

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