Battery pack shell and manufacturing method of battery pack

Abstract

The invention relates to a battery pack shell and a manufacturing method of a battery pack. A battery pack case includes: a substrate; the side component and the base plate jointly form a containing space and are connected with the base plate; and a crossing member extending in a direction crossing the side member. The side member includes: an inner side wall facing the accommodation space; and a guide bracket protruding from the inner side wall toward the accommodation space and forming a guide opening into which the crossing member is inserted.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0155654, filed with the Korean Intellectual Property Office on November 5, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to a battery pack housing and a method for manufacturing a battery pack. Background Technology

[0004] In recent years, against the backdrop of growing global concerns about environmental degradation and the depletion of oil resources, electric vehicles (EVs) have gained widespread recognition for their environmental friendliness, and research and development of EVs have received significant attention. This heightened urgency has driven progress across various categories related to EVs, including plug-in hybrid electric vehicles (PHEVs), battery electric vehicles (BEVs), and fuel cell electric vehicles (FCEVs). The transition to EV technology promises to reduce greenhouse gas emissions and may also meet the urgent need to move away from fossil fuel dependence and seek sustainable alternatives.

[0005] In the design of electric vehicles, there is a battery pack housing that provides structural support for individual battery cells, which serve as the primary energy source for the vehicle's propulsion system. In conjunction with this fundamental component, ongoing research focuses on increasing the capacity and energy density of these battery cells within the housing to improve the overall performance, range, and efficiency of electric vehicles.

[0006] To increase battery cell capacity, a CTP (cell-to-pack) structure can be utilized (battery cells are directly integrated into the battery pack housing as a single stack of cells, rather than organized as individual modules). This approach enables increased energy density and improved thermal management, resulting in more efficient electrical performance. Furthermore, integrating the battery cell stack into the battery pack housing may require the introduction of additional structural elements (such as cross-sections) that play a crucial role in distributing surface pressures applied to the battery cell stack during operation. This structural support is essential for maintaining the integrity and lifespan of the battery system under various conditions.

[0007] Given the above, there is a significant demand for improved and simplified structural designs that facilitate the assembly of cross-components while ensuring their stability and effectiveness in supporting battery cell stacks. Such simplified designs can reduce manufacturing costs and improve battery system reliability. Furthermore, innovative technologies aimed at optimizing the integration of cross-components within the battery pack housing can improve overall performance, thereby driving advancements in battery technology. These improved and simplified structural designs should utilize efficient materials and designs that meet both structural requirements and consistent standards in modern battery manufacturing. Summary of the Invention

[0008] This application is filed to address the problems mentioned above.

[0009] In its implementation, this application provides a battery pack housing that enables easy assembly and stable support of the cross-section component.

[0010] The technical problems to be solved by this application are not limited to those mentioned above, and any other technical problems not mentioned herein will be clearly understood by those skilled in the art through the following description.

[0011] In one embodiment, this application provides a battery pack housing comprising: a substrate; a side member that forms a receiving space with and is connected to the substrate; and a transverse member extending in a direction intersecting the side member. The side member includes: an inner sidewall facing the receiving space; and a guide bracket protruding from the inner sidewall toward the receiving space and forming a guide opening for insertion of the transverse member.

[0012] In one embodiment, the guide bracket includes a pair of bracket walls that protrude from an inner wall toward a receiving space, and the guide opening may be located between the pair of bracket walls.

[0013] Each of the pair of support walls may extend in a direction perpendicular to the substrate, and the guide opening may extend along the pair of support walls in that direction.

[0014] The transverse component can be inserted into the guide opening along the one direction.

[0015] In one embodiment, the guide bracket includes: a connecting wall that connects a pair of bracket walls and contacts an inner wall, the connecting wall including an inner connecting surface facing the guide opening; and an interference member that contacts the inner connecting surface and interferes with the transverse member.

[0016] The interference component can interfere with the cross component, allowing the cross component to be inserted into the guide opening in one direction, and preventing the cross component from disengaging from the guide opening in another direction opposite to said one direction.

[0017] In one embodiment, the interference component includes: a support region that contacts the inner connecting surface; and an interference protrusion region that protrudes from the support region toward the guide opening and interferes with the cross component.

[0018] In one embodiment, the interference component includes: a protruding region that is connected to and protrudes from the support region; and a component contact region that extends from the protruding region and is spaced apart from the support region.

[0019] The protruding area may have an inclined shape to form a specific angle with one of the directions of the insertion guide opening across the component and the direction toward the component.

[0020] In one embodiment, the transverse component includes: a guide surface disposed parallel to the support region and in contact with the interference protrusion region; and an interference surface protruding from the guide surface toward the support region and interfering with one end of the interference protrusion region.

[0021] In one embodiment, each of the pair of support walls includes: an inner support surface facing the guide opening; and an inlet support surface extending from the inner support surface at a specific angle relative to another direction opposite to the first direction, the inlet support surface being formed such that the cross-sectional area of ​​the guide opening in a plane perpendicular to the first direction increases along the other direction.

[0022] In one embodiment, the guide bracket includes a connecting wall that connects a pair of bracket walls and contacts an inner wall, and in another embodiment, the connecting wall includes: an inner connecting surface facing the guide opening; and an inlet connecting surface extending from the inner connecting surface at a specific angle relative to another direction opposite to the first direction, the inlet connecting surface being formed such that the cross-sectional area of ​​the guide opening in a plane perpendicular to the first direction increases along the other direction.

[0023] In one embodiment, this application provides a method for manufacturing a battery pack, the method comprising: preparing a substrate and side members that together form a receiving space; mounting a battery cell stack in the receiving space; and, after a cell mounting step, inserting a cross member between the battery cell stacks. The side member includes: an inner sidewall facing the receiving space; a guide bracket projecting from the inner sidewall toward the receiving space to form a guide opening; and inserting the cross member between the battery cell stacks comprises: inserting the cross member into the guide opening.

[0024] The guide opening may extend in a direction perpendicular to the substrate, and inserting the cross member between the battery cell stacks includes inserting the cross member into the guide opening in the direction.

[0025] In one embodiment, the guide bracket includes an interference member disposed in the guide opening and interfering with the cross member, and in another embodiment, inserting the cross member between the battery cell stacks includes: inserting the cross member into the guide opening until the cross member interferes with the interference member within the guide opening. Attached Figure Description

[0026] The above and other objects, features and advantages of this application will become more apparent from the following detailed description taken in conjunction with the accompanying drawings:

[0027] Figure 1 This is an exploded perspective view of a battery pack according to an embodiment of this application;

[0028] Figure 2 This is an enlarged view of the battery pack housing according to an embodiment of this application;

[0029] Figure 3 This is an enlarged view of the inner wall and guide bracket according to the embodiment of this application;

[0030] Figure 4 This is an enlarged view showing the transverse component of an insertion guide bracket according to an embodiment of this application;

[0031] Figure 5 This is a vertical cross-sectional view showing the transverse component of the insertion guide bracket according to an embodiment of this application;

[0032] Figure 6 yes Figure 5 An enlarged view of part A shown in the image;

[0033] Figure 7 This is a flowchart illustrating a method for manufacturing a battery pack according to an embodiment of this application;

[0034] Figure 8 This is a perspective view of the battery pack housing during the preparation steps of the embodiment of this application;

[0035] Figure 9 This is a perspective view of the battery pack housing and the battery cell stack in the cell installation steps according to the embodiment of this application;

[0036] Figure 10 yes Figure 9 Enlarged view of the guide bracket and battery cell stack shown in the figure;

[0037] Figure 11This is a perspective view of the battery pack housing and battery cell stack in the cross-component installation steps according to the embodiment of this application;

[0038] Figure 12 yes Figure 11 An enlarged view of the transverse component of the insertion guide bracket is shown in the figure. Detailed Implementation

[0039] In the following description, some embodiments of this application will be described in detail with reference to the exemplary drawings. When adding reference numerals to components in each drawing, it should be noted that even if the same or equivalent components are shown in other drawings, the same or equivalent components are represented by the same reference numerals. Furthermore, in describing embodiments of this application, detailed descriptions of known features or functions will be omitted to avoid unnecessarily obscuring the main points of this application.

[0040] In describing components according to embodiments of this application, terms such as first, second, "A", "B", (a), and (b) may be used. These terms are intended only to distinguish one component from another, and the terms do not limit the nature, order, or sequence of the components. Unless otherwise defined, all terms used herein, including technical or scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Such terms as defined in commonly used dictionaries shall be interpreted as having the same meaning as in the context of the relevant technical field, and shall not be interpreted as having an imaginary or overly formal meaning unless expressly defined in this application.

[0041] In the following text, the implementation scheme of this application will refer to Figures 1 to 12 Provide a detailed description.

[0042] Figure 1 This is an exploded perspective view of a battery pack according to an embodiment of this application. Figure 2 This is an enlarged view of the battery pack housing according to the embodiment of this application. Figure 3 This is an enlarged view of the inner wall and guide bracket according to the embodiment of this application. Figure 4 This is an enlarged view showing the transverse component of an insertion guide bracket according to an embodiment of this application. Figure 5 This is a vertical cross-sectional view of the transverse component of an insertion guide bracket according to an embodiment of this application. Figure 6 yes Figure 5 An enlarged view of part A shown in the image.

[0043] Reference Figures 1 to 6 The battery pack 100 may include a battery cell stack 200, a battery pack cover 300, an electronic module 400, and a battery pack housing 500.

[0044] The battery cell stack 200 may include battery cells for supplying power to an electric vehicle. The battery cells may be arranged along a first direction (X direction or the opposite direction to the X direction) and may extend along a second direction perpendicular to the first direction (Y direction or the opposite direction to the Y direction).

[0045] Multiple battery cell stacks 200 can be provided and can be housed in the battery pack housing 500. The battery cell stacks 200 can be installed in the battery pack housing 500 in the form of multiple battery cells stacked together, rather than in the form of modules equipped with module housings.

[0046] The battery pack cover 300 can cover the area of ​​the battery cell stack 200 facing a third direction (facing the Z direction). The third direction can be perpendicular to the first and second directions. The battery pack cover 300 can engage with the battery pack housing 500 and can cover the battery cell stack 200.

[0047] The battery cell stack 200 can be connected to the electronic module 400. The electronic module 400 may include busbars or wires connected to each of the plurality of battery cell stacks 200.

[0048] The electronic module 400 can transmit power generated from the battery cell stack 200 to other components of the electric vehicle via a bus or wire. Furthermore, the electronic module 400 can sense the temperature or voltage of the battery cell stack 200 and can control the battery cells based on their state.

[0049] The battery pack housing 500 may include a substrate 510, a front member 520, a rear member 530, and a side member 540. The front member 520, the rear member 530, and the side member 540 may extend around the substrate 510.

[0050] The front member 520, the rear member 530 and the side member 540 together with the substrate 510 can form a receiving space 501 for accommodating the battery cell stack 200.

[0051] The front member 520 may cover the area of ​​the receiving space 501 facing the first direction (facing the X direction). The front member 520 may be connected to the substrate 510 and may be bonded to the substrate 510.

[0052] The rear member 530 can cover the area of ​​the receiving space 501 facing the opposite side of the first direction (facing the direction opposite to the X direction). The rear member 530 can be connected to the substrate 510 and can be bonded to the substrate 510.

[0053] Side members 540 may be configured as a pair and may cover the areas of the receiving space 501 facing opposite sides of the second direction (facing the Y direction or the direction opposite to the Y direction). Side members 540 may extend along the first direction and may be connected to the front member 520 and the rear member 530.

[0054] Side members 540 can be connected to and engaged with substrate 510. Each of side members 540 may include a flange 541 and a side part 542.

[0055] Side member 542 can be connected to front member 520 and rear member 530, and can cover receiving space 501. Flange 541, as a component for securing battery pack 100 to electric vehicle, can protrude from side member 542 in a direction away from receiving space 501.

[0056] Meanwhile, the substrate 510, the front member 520, the rear member 530 and the side member 540 can be configured as separate components, or they can be implemented as a single component.

[0057] The battery pack housing 500 may include an intermediate component 600 and a cross component 700 housed in a receiving space 501. The intermediate component 600 may extend in a first direction between the front component 520 and the rear component 530. Multiple intermediate components 600 may be provided. Each of the multiple intermediate components 600 may be disposed between a pair of adjacent cross components 700.

[0058] The intermediate component 600 can be disposed between a pair of battery cell stacks 200 spaced apart from each other along a second direction. The intermediate component 600 can support or cover the wires or busbars of the electronic module 400.

[0059] The transverse member 700 may extend between a pair of side members 540 in a direction intersecting the side members 540. The transverse member 700 may extend in a direction intersecting the intermediate member 600. Multiple transverse members 700 may be provided. Multiple transverse members 700 may be spaced apart from each other in a first direction and may extend in a second direction.

[0060] Each of the plurality of transverse members 700 may be disposed between a pair of battery cell stacks 200 spaced apart from each other along a first direction. The transverse members 700 may be located at opposite ends of the battery cell stacks 200 in the first direction and may prevent the battery cells from expanding along the first direction.

[0061] The intermediate component 600 and the transverse component 700 can be joined to the substrate 510, and the positions of the intermediate component 600 and the transverse component 700 can be fixed accordingly. The opposite ends of each of the transverse components 700 in the second direction can respectively face a pair of side members 540. The transverse component 700 can be supported by the pair of side members 540.

[0062] More specifically, each of the side members 540 may include an inner sidewall 550 facing the receiving space 501 and a guide bracket 560 protruding from the inner sidewall 550 toward the receiving space 501.

[0063] Multiple guide brackets 560 may be provided. Multiple guide brackets 560 may be spaced apart from each other along a first direction. The number of guide brackets 560 for each of a pair of side members 540 may correspond to the number of transverse members 700.

[0064] The guide bracket 560 may be formed on the inner sidewall 550 of the side member 540 and may open toward the receiving space 501. The guide bracket 560 may extend in a third direction (Z direction or the direction opposite to Z direction).

[0065] The guide bracket 560 can support the cross member 700. The guide bracket 560 may include a guide opening 563 for the cross member 700 to be inserted into. The cross member 700 can be inserted into the guide opening 563.

[0066] The transverse member 700 of the insertion guide opening 563 can be supported by the transverse support member 580. The transverse support member 580 can be disposed on the substrate 510 facing a third direction (facing the Z direction). Compared with the guide bracket 560, the transverse support member 580 can be disposed on the other side facing a third direction (facing a direction opposite to the Z direction).

[0067] The guide bracket 560 may include a connecting wall 561 and a pair of bracket walls 562. The pair of bracket walls 562 may protrude from the inner wall 550 toward the receiving space 501, and a guide opening 563 may be disposed between the pair of bracket walls 562.

[0068] The connecting wall 561 can connect to a pair of support walls 562 and can contact the inner wall 550. The connecting wall 561 and the pair of support walls 562 can together form the three sides of the guide opening 563.

[0069] Both the connecting wall 561 and the pair of support walls 562 can extend in a third direction, and correspondingly, the guide opening 563 can extend in a third direction along the connecting wall 561 and the pair of support walls 562.

[0070] The connecting wall 561 may include an inner connecting surface 561a facing the guide opening 563. The connecting wall 561 may include an inlet connecting surface 561b connected to the inner connecting surface 561a.

[0071] The inner connecting surface 561a may extend in a third direction. The inlet connecting surface 561b may have an inclined shape to form a specific angle with the inner sidewall 550 from the side of the inner connecting surface 561a toward the third direction.

[0072] Each of the support wall 562 may include an inner support surface 562a facing the guide opening 563. The support wall 562 may include an inlet support surface 562b connected to the inner support surface 562a.

[0073] The inner support surface 562a may extend in a third direction. The inlet support surface 562b may have an inclined shape to form a specific angle with the guide opening 563 on the outer side in the first direction from the inner support surface 562a toward the third direction.

[0074] When the transverse component 700 is inserted into the guide opening 563 toward the substrate 510, the inlet connection surface 561b and the inlet support surface 562b can guide the insertion of the transverse component 700.

[0075] The inlet connection surface 561b can extend from the inner connection surface 561a to have a specific angle relative to the third direction, and can be formed such that the cross-sectional area of ​​the guide opening 563 on the plane perpendicular to the third direction increases toward the third direction.

[0076] Similarly, the inlet support surface 562b can extend from the inner support surface 562a to have a specific angle relative to the third direction, and can be formed such that the cross-sectional area of ​​the guide opening 563 in the plane perpendicular to the third direction increases toward the third direction.

[0077] Due to the structure described above, when the transverse component 700 is inserted into the guide opening 563 in the third direction, the transverse component 700 can contact the inlet connection surface 561b or the inlet support surface 562b and can slide into the guide opening 563.

[0078] In other words, the process of inserting the transverse component 700 into the guide opening 563 can be guided as the transverse component 700 moves toward the other side in a third direction, thus facilitating the manufacturing process of the battery pack 100 including the transverse component 700.

[0079] Furthermore, the guide bracket 560 may include an interference member 570 that contacts the inner connecting surface 561a and interferes with the transverse member 700. The interference member 570 may be located in the guide opening 563.

[0080] While interfering with the transverse component 700, the interfering component 570 allows the transverse component 700 to be inserted into the guide opening 563 on the other side in the third direction, but prevents the transverse component 700 from disengaging from the guide opening 563 on the side in the third direction.

[0081] Even without a separate fixing component for fixing the transverse component 700, the interference component 570 can serve as a component for fixing the position of the transverse component 700 in the guide opening 563.

[0082] The interference component 570 may include a support region 571 and an interference protrusion region 572, the support region 571 contacting the inner connecting surface 561a, and the interference protrusion region 572 protruding from the support region 571 toward the guide opening 563. The interference protrusion region 572 may be a component that interferes with the component 700.

[0083] The interference protrusion area 572 may include a protrusion area 573 and a transverse component contact area 574, wherein the protrusion area 573 is connected to and protrudes from the support area 571, and the transverse component contact area 574 extends from the protrusion area 573 and is spaced apart from the support area 571.

[0084] The protruding region 573 can protrude from the support region 571 toward the transverse member 700. The protruding region 573 may have an inclined shape to form specific angles with the other side in the third direction and toward the transverse member 700, respectively.

[0085] The cross-component contact area 574 can extend from the protruding area 573 to the other side in a third direction. The cross-component contact area 574 can contact the cross-component 700 and can prevent the cross-component 700 from disengaging to the third side.

[0086] More specifically, the transverse component 700 may include a guide surface 710 and an interference surface 720. The guide surface 710 is disposed parallel to the support region 571 and contacts the interference protrusion region 572. The interference surface 720 protrudes from the guide surface 710 toward the support region 571 and interferes with one end of the interference protrusion region 572. One end of the interference protrusion region 572 may be one end of the transverse component contact region 574.

[0087] The interference surface 720 can protrude horizontally from the guide surface 710. The interference surface 720 can be formed to be blocked by one end of the component contact area 574. In this case, one end of the component contact area 574 can be located on the opposite side of the other end of the component contact area 574 connected to the protruding area 573.

[0088] One end of the interference protrusion region 572 may be a free end. When the transverse component 700 is inserted into the guide opening 563, one end of the interference protrusion region 572 may interfere with the transverse component 700 and may deform.

[0089] As the transverse component 700 continues to be inserted, the position of one end of the interference protrusion region 572 can be restored. This is because the other end of the interference protrusion region 572, which is connected to the support region 571, is a fixed end. Thereafter, one end of the interference protrusion region 572 can be placed on the interference surface 720.

[0090] Through the process described above, the transverse component 700 can be allowed to be inserted into the guide opening 563 toward the third-party side, but the transverse component 700 is prevented from disengaging from the guide opening 563 toward the third-party side.

[0091] In other words, the positions of the two opposite ends of the transverse component 700 in the second direction can be fixed by fixing the transverse component 700 and the substrate 510 without separate connecting components, thereby improving the structural stability and durability of the battery pack 100.

[0092] Furthermore, since the position of the transverse component 700 is fixed by the guide bracket 560, the battery cell stack 200 can be prevented from expanding to the opposite sides in the first direction.

[0093] Figure 7 This is a flowchart illustrating a method for manufacturing a battery pack according to an embodiment of this application. Figure 8 This is a perspective view of the battery pack housing during the preparation steps of the implementation scheme of this application. Figure 9 This is a perspective view of the battery pack housing and the battery cell stack in the cell installation steps according to the embodiment of this application. Figure 10 yes Figure 9 The image shows an enlarged view of the guide bracket and the battery cell stack. Figure 11 This is a perspective view of the battery pack housing and battery cell stack in the cross-component installation steps according to the embodiment of this application. Figure 12 yes Figure 11 An enlarged view of the transverse component of the insertion guide bracket is shown in the figure.

[0094] Reference Figures 7 to 12Battery pack 100 (reference) Figure 1 The manufacturing method may include a preparation step S10, a cell installation step S20, a cross component installation step S30, and a battery pack cover joining step S40.

[0095] Preparation step S10 can be a step that involves preparing a substrate 510 and a side member 540 that together form the receiving space 501, such as... Figure 8 As shown.

[0096] Preparation step S10 can be a step in which the substrate 510, front member 520, rear member 530 and side member 540 of the battery pack housing 500 are joined together to prepare the receiving space 501 to be open to a third-party side.

[0097] Cell installation step S20 can be the following steps: installing the battery cell stack 200 in the receiving space 501, such as... Figure 9 and Figure 10 As shown. The battery cells of the battery cell stack 200 can be arranged in a first direction and extend along a second direction, but are not limited thereto.

[0098] In cell installation step S20, the battery cell stack 200 can be installed in the receiving space 501 from the third-direction side region. At this time, the battery cell stack 200 can be placed in the receiving space 501 while avoiding the guide bracket 560.

[0099] In the cell installation step S20, the position of the battery cell stack 200 can be guided by the guide bracket 560, and correspondingly, the manufacturing process of the battery pack 100 can be relatively simplified. Therefore, the production efficiency of the battery pack 100 can be improved.

[0100] The guide opening 563 of the guide bracket 560 can be formed to open towards one third direction and can extend towards the other third direction. The guide bracket 560 can be positioned in a location that does not interfere with the battery cell stack 200, so that the position of the guide opening 563 can be identified even when the guide bracket 560 is viewed from the third direction after the cell installation step S20.

[0101] After cell installation step S20, the cross-component installation step S30 can be the following step: inserting the cross-component 700 between the battery cell stacks 200, such as... Figure 11 and Figure 12 As shown. The cross-component installation step S30 may include: inserting the cross-component 700 into the guide opening 563.

[0102] Each of the transverse components 700 can be inserted into a receiving space 501 between a pair of battery cell stacks 200 spaced apart from each other along a first direction. That is, the transverse component 700 can also be moved from one side of the receiving space 501 facing a third direction to the other side of the third direction.

[0103] In the transverse component installation step S30, the transverse component 700 can be inserted into the guide opening 563 on the other side in the third direction. At this time, as Figure 3 As shown, the process of inserting the cross component 700 into the guide opening 563 can be guided by the inlet connection surface 561b and the inlet support surface 562b.

[0104] The cross component installation step S30 may include the following steps: inserting the cross component 700 into the guide opening 563 until the cross component 700 interferes with the interference component 570 within the guide opening 563.

[0105] Subsequently, the transverse component 700 can be fixed by joining the transverse component 700, the transverse support component 580 and the substrate 510.

[0106] In the cross-component installation step S30, since the position of the cross-component 700 is guided by the guide opening 563, the manufacturing process of the battery pack 100 can be relatively simplified, thereby improving the production efficiency of the battery pack 100.

[0107] Furthermore, since the position of the cross component 700 can be fixed by the interference component 570 even without a separate joining component in the cross component installation step S30, the joining process of the joining component can be omitted, thereby improving the production efficiency of the battery pack 100.

[0108] Subsequently, electronic module 400 (refer to) Figure 1 The electronic module 400 and intermediate component 600 can also be installed in the receiving space 501. The assembly order of the electronic module 400, intermediate component 600 and cross component 700 is not limited to this, and the cross component 700 can be installed in the receiving space 501 after the electronic module 400 and intermediate component 600 are installed in the receiving space 501.

[0109] The battery pack cover bonding step S40 can be performed after the battery cell stack 200, intermediate part 600 and transverse part 700 are bonded to the substrate 510 as described above.

[0110] The battery pack cover joining step S40 can be the following step: the battery pack cover 300 (refer to) is disposed on a third-direction side of the battery cell stack 200. Figure 1 It is engaged with the front member 220, the rear member 230 and the side member 240.

[0111] After performing the preparation step S10, the cell installation step S20, the cross component installation step S30, and the battery pack cover joining step S40 as described above, the manufacturing of the battery pack 100 can be completed.

[0112] As mentioned above, the position of the component inserted into the receiving space can be guided by a guide opening, which facilitates the manufacturing of the battery pack.

[0113] Furthermore, the cross-section component can interfere with the interference component, thus preventing the cross-section component from detaching from the battery cell stack.

[0114] In addition, the cross-section component can be stably supported between the battery cell stacks through the guide openings, thereby maintaining the pressure of the battery cell stacks.

[0115] In addition, the cross-bracing component can be fixed between the battery cell stacks without separate bonding components, which facilitates the manufacturing of the battery pack.

[0116] Furthermore, this application can provide various effects, either directly or indirectly.

[0117] In the foregoing, although this application has been described with reference to exemplary embodiments and the accompanying drawings, this application is not limited thereto, and various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of this application as defined in the claims herein.

[0118] Therefore, the exemplary embodiments provided in this application are intended to explain the spirit and scope of this application, and not to limit it; thus, the spirit and scope of this application are not limited by these embodiments. The scope of this application should be interpreted based on the appended claims, and all technical concepts within the scope of the claims should be included within the scope of this application.

Claims

1. A battery pack housing, comprising: substrate; Side members, configured to form a receiving space together with the substrate and connected to the substrate; as well as A transverse component, configured to extend in a direction intersecting with the side members; The side member includes: The inner sidewalls are configured to face the receiving space; and A guide bracket is configured to protrude from the inner sidewall toward the receiving space and form a guide opening for insertion across the component.

2. The battery pack housing according to claim 1, wherein, The guide bracket includes a pair of bracket walls configured to project from the inner wall toward the receiving space, and the guide opening is located between the pair of bracket walls.

3. The battery pack housing according to claim 2, wherein, Each of the pair of support walls extends in a direction perpendicular to the substrate, and the guide opening extends along the pair of support walls in that direction.

4. The battery pack housing according to claim 3, wherein, The transverse component is inserted into the guide opening along the one direction.

5. The battery pack housing according to claim 2, wherein, The guide bracket further includes: A connecting wall configured to connect a pair of support walls and contact an inner wall, the connecting wall including an inner connecting surface configured to face a guide opening; and An interference component that contacts the inner connecting surface and is configured to interfere with the component across it.

6. The battery pack housing according to claim 5, wherein, The interfering component interferes with the traversing component, allowing the traversing component to be inserted into the guide opening in one direction, and preventing the traversing component from disengaging from the guide opening in the opposite direction.

7. The battery pack housing according to claim 5, wherein, The interference component includes: Support area, which contacts the inner connecting surface; and The interference protrusion area is configured to protrude from the support area toward the guide opening and interfere with the cross component.

8. The battery pack housing according to claim 7, wherein, The interference protrusion area includes: A protruding area, which is connected to the supporting area and configured to protrude from the supporting area; and It spans the component contact area and is configured to extend from the protruding area and be spaced apart from the support area.

9. The battery pack housing according to claim 8, wherein, The protruding area has an inclined shape to form specific angles with one direction of the insertion guide opening across the component and the direction toward the component.

10. The battery pack housing according to claim 7, wherein, The transverse component includes: A guiding surface, which is arranged parallel to the supporting area and contacts the interference protrusion area; and An interference surface is configured to protrude from the guide surface toward the support region and interfere with one end of the interference protrusion region.

11. The battery pack housing according to claim 3, wherein, Each of the pair of support walls includes: The surface of the inner support is configured to face the guide opening; and An inlet support surface, configured to extend from the inner support surface at a specific angle relative to a direction opposite to the first direction, the inlet support surface being formed such that the cross-sectional area of ​​the guide opening in a plane perpendicular to the first direction increases along the second direction.

12. The battery pack housing according to claim 3, wherein, The guide bracket further includes a connecting wall configured to connect a pair of bracket walls and contact an inner wall. The connecting wall includes: The inner connecting surface is configured to face the guide opening; An inlet connection surface is configured to extend from an inner connection surface at a specific angle relative to a direction opposite to the first direction, the inlet connection surface being formed such that the cross-sectional area of ​​the guide opening in a plane perpendicular to the first direction increases along the second direction.

13. A method for manufacturing a battery pack, the method comprising: The substrate and side members are prepared to be configured together to form the receiving space; A stack of battery cells is installed in the accommodating space; After the cell installation step, the cross-shaped component is inserted between the battery cell stacks; The side member includes: The inner wall is configured to face the accommodating space; A guide bracket configured to protrude from the inner sidewall toward the receiving space to form a guide opening; Inserting the transverse component between the battery cell stacks includes inserting the transverse component into a guide opening.

14. The method according to claim 13, wherein, The guide opening extends in a direction perpendicular to the substrate, and inserting the transverse component between the battery cell stacks further includes inserting the transverse component into the guide opening in the said direction.

15. The method according to claim 13, wherein, The guide bracket includes an interference member disposed in the guide opening and configured to interfere with the cross member, and inserting the cross member between the battery cell stacks further includes: inserting the cross member into the guide opening until the cross member interferes with the interference member within the guide opening.

Images