Battery pack and vehicle comprising same

Abstract

A battery pack according to the present invention comprises: at least one battery cell array having an electronic board unit on at least one side thereof; and a pack case for accommodating the at least one battery cell array, wherein the electronic board unit has a waterproof structure for preventing a cooling medium from flowing thereinto.

Description

Battery pack and automobile including the same

[0001] The present invention relates to a battery pack and an automobile including the same, and more specifically, to a battery pack with improved waterproof performance and an automobile including the same.

[0002] This application is a priority application for Korean Patent Application No. 10-2024-0193192 filed on December 20, 2024 and Korean Patent Application No. 10-2025-0069918 filed on May 28, 2025, and all contents disclosed in the specifications of said applications are incorporated into this application by reference.

[0003] Secondary batteries, which possess electrical characteristics such as high energy density and high applicability across product groups, are widely applied not only to portable devices but also to electric vehicles (EVs) or hybrid electric vehicles (HEVs) powered by electric sources. These secondary batteries are attracting attention as a new energy source for enhancing eco-friendliness and energy efficiency, not only for the primary advantage of drastically reducing the use of fossil fuels but also because they generate no by-products from energy use.

[0004] Currently, widely used types of secondary batteries include lithium-ion batteries, lithium-polymer batteries, nickel-cadmium batteries, nickel-hydrogen batteries, and nickel-zinc batteries. The operating voltage of these unit secondary battery cells, or unit battery cells, is approximately 2.5V to 4.5V. Therefore, if a higher output voltage is required, multiple battery cells are connected in series to form a battery pack. Additionally, depending on the charge / discharge capacity required for the battery pack, multiple battery cells are connected in parallel to form a battery pack. Accordingly, the number of battery cells included in the battery pack can be varied depending on the required output voltage or charge / discharge capacity.

[0005] Meanwhile, when configuring a battery pack by connecting multiple battery cells in series or parallel, it is common practice to first configure a battery cell array comprising at least one battery cell, and then use this at least one battery cell array to add other components to configure the battery pack or battery rack.

[0006] In conventional battery cell arrays, an electrical board unit for electrical control and the like is mounted on one side. Since such conventional electrical board units are not provided with a separate waterproof structure, if a cooling medium leaks from inside the pack case, the unit may become submerged by the leaked medium, posing a significant risk of battery pack failure or short circuits.

[0007] Therefore, there is a need to explore ways to provide a battery pack with enhanced waterproof performance and an automobile containing the same, so as to effectively prevent the submersion of the electrical board unit.

[0008] The present invention was created in consideration of the technical background described above, and has one objective of providing a battery pack with improved waterproof performance and an automobile including the same.

[0009] In addition, another objective is to provide a battery pack capable of effectively preventing failures or short circuits, and a vehicle including the same.

[0010] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems will be clearly understood by those skilled in the art from the description of the invention below.

[0011] A battery pack according to the present invention comprises at least one battery cell array having an electrical board unit on at least one side; and a pack case accommodating the at least one battery cell array, wherein the electrical board unit is provided with a waterproof structure that prevents the inflow of a cooling medium into the interior.

[0012] The above waterproof structure may be provided on the lower side of the above electrical board unit.

[0013] The above-described electrical board unit includes a board housing mounted on one side of the battery cell array; and an electrical board provided within the board housing for controlling the battery cell array, and the waterproof structure may be configured to prevent the cooling medium from flowing into the electrical board.

[0014] The bottom part of the board housing above is provided in a basket shape to implement the waterproof structure.

[0015] The above-mentioned electrical board can be slid and inserted into the board housing.

[0016] The above sliding direction may be a direction from the upper side to the lower side of the board housing.

[0017] The above board housing may be provided with at least one board mounting guide for guiding the sliding insertion mounting of the above-mentioned electrical board.

[0018] The above-described electrical board unit may include a top cover coupled to the board housing so as to cover the electrical board together with the board housing.

[0019] The above top cover can be bolted together with the board housing.

[0020] The lower part of the above-mentioned electrical board can be fixed to the board housing through an adhesive member.

[0021] The above adhesive member may include an epoxy-based or acrylic-based adhesive glue.

[0022] Potting resin can be filled inside the above board housing.

[0023] The above potting resin may include silicone resin.

[0024] The interior of the above board housing can be filled with foam.

[0025] The above foam may include a polyurethane-based resin.

[0026] The automobile according to the present invention includes at least one battery pack according to the present invention.

[0027] According to the present invention, a battery pack with improved waterproof performance and an automobile including the same can be provided.

[0028] In addition, according to one aspect of the present invention, a battery pack capable of effectively preventing flooding of an electrical board unit due to a cooling medium and an automobile including the same can be provided.

[0029] In addition, according to one aspect of the present invention, a battery pack capable of effectively preventing failures or short circuits, and a vehicle including the same can be provided.

[0030] In addition, according to one aspect of the present invention, a battery pack with improved fixability of an electrical board unit and an automobile including the same can be provided.

[0031] In addition, according to one aspect of the present invention, a battery pack with improved assemblability and an automobile including the same can be provided.

[0032] In addition, according to one aspect of the present invention, a battery pack with improved structural stability and an automobile including the same can be provided.

[0033] In addition, according to one aspect of the present invention, a battery pack capable of minimizing an external impact and an automobile including the same can be provided.

[0034] The effects of the present invention are not limited to the effects described above, and unmentioned effects will be clearly understood by those skilled in the art from this specification and the attached drawings.

[0035] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings.

[0036] FIG. 1 is a drawing for explaining a battery pack according to one embodiment of the present invention.

[0037] FIG. 2 is a drawing for explaining the main parts of a battery pack according to one embodiment of the present invention.

[0038] FIG. 3 is an exploded perspective view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0039] FIG. 4 is a perspective view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0040] FIG. 5 is a rear perspective view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0041] FIG. 6 is a front view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0042] FIG. 7 is a plan view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0043] FIG. 8 is a bottom view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0044] FIG. 9 is a side view of an electrical board unit of a battery cell array of a battery pack according to one embodiment of the present invention.

[0045] FIG. 10 is a drawing illustrating the mounting of an electrical board unit to the board housing side of an electrical board according to one embodiment of the present invention.

[0046] FIG. 11 is a drawing for explaining a board mounting guide of a board housing of an electrical board unit according to one embodiment of the present invention.

[0047] FIGS. 12 and FIGS. 13 are drawings for explaining the mounting structure of an electrical board unit according to an embodiment of the present invention.

[0048] FIG. 14 is a drawing for explaining an electrical board unit of a battery pack according to another embodiment of the present invention.

[0049] FIG. 15 is a drawing illustrating a state in which a cooling medium is accumulated inside a battery pack, for explaining the waterproof structure of an electrical board unit according to one embodiment of the present invention.

[0050] FIG. 16 is a drawing for explaining an automobile according to one embodiment of the present invention.

[0051] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0052] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all aspects of the technical concept of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0053] Meanwhile, although terms indicating directions such as up, down, left, right, front, and back may be used in this specification, these terms are used merely for convenience of explanation and may vary depending on the location of the object or the position of the observer, as is obvious to those skilled in the art of this invention.

[0054]

[0055] FIG. 1 is a drawing for explaining a battery pack according to an embodiment of the present invention, and FIG. 2 is a drawing for explaining a main part of a battery pack according to an embodiment of the present invention.

[0056] Referring to FIGS. 1 and FIGS. 2, the battery pack (1) may include at least one battery cell array (10) and a pack case (50) for accommodating the at least one battery cell array (10). (For reference, region A of FIG. 1 is shown in enlarged form in FIG. 2.)

[0057] The above at least one battery cell array (10) may include a plurality of battery cells, a cooling unit for cooling the plurality of battery cells, and a side frame that accommodates and supports the plurality of battery cells and the cooling unit.

[0058] The plurality of battery cells mentioned above may be provided as secondary batteries, such as cylindrical secondary batteries, pouch-type secondary batteries, or prismatic secondary batteries. Hereinafter, in this embodiment, the description is limited to the case where the plurality of battery cells are provided as secondary batteries, such as cylindrical secondary batteries.

[0059] The cooling unit may be provided between the battery cells or at the bottom of the battery cells. When the cooling unit is placed between the battery cells, the battery pack may be implemented as a side cooling structure, and when the cooling unit is provided at the bottom of the battery cells, the battery pack may be implemented as a bottom cooling structure.

[0060] A cooling channel may be provided inside the above-mentioned cooling unit. A cooling medium may flow through the cooling channel. Such cooling channel and cooling medium may be provided to enhance the cooling performance of the battery cells.

[0061] The above battery cell array (10) may include an electric board unit (100).

[0062] The above-mentioned electrical board unit (100) is for controlling the battery cell array (10), etc., and may be provided on at least one side of the battery cell array (10). For example, the above-mentioned electrical board unit (100) may be mounted on one side of the side frame. For example, the above-mentioned electrical board unit (100) may be positioned on the front or -Y direction side of the battery cell array (10). For example, although not shown in the drawing, the above-mentioned electrical board unit (100) may also be positioned on the rear or +Y direction side of the battery cell array (10).

[0063] The above-mentioned electrical board unit (100) may be provided with a waterproof structure. The waterproof structure may be configured to prevent the cooling medium from flowing into the interior of the above-mentioned electrical board unit (100). That is, the provision of a waterproof structure in the above-mentioned electrical board unit (100) means that the above-mentioned electrical board unit (100) is configured to prevent the cooling medium from flowing in.

[0064] Thus, in one embodiment of the present invention, since the electrical board unit (100) has the waterproof structure, the inflow of the cooling medium into the electrical board unit (100) can be effectively blocked. Specifically, even when the cooling medium leaks out from the cooling unit to the outside of the cooling unit, the inflow of the cooling medium into the electrical board unit (100) can be effectively blocked by the waterproof structure.

[0065] Accordingly, in one embodiment of the present invention, when the cooling medium leaks out within the pack case (50), the flooding of the electrical board unit (100) caused by the leaked cooling medium can be effectively prevented.

[0066] Therefore, in the present invention, even if the cooling medium leaks out within the pack case (50), the failure or short circuit of the electrical board unit (100) caused by the leaked cooling medium can be prevented more effectively.

[0067]

[0068] Below, we will examine the above-mentioned electrical board unit (100) having the above-mentioned waterproof structure in more detail.

[0069] FIG. 3 is an exploded perspective view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention, FIG. 4 is a perspective view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention, FIG. 5 is a rear perspective view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention, FIG. 6 is a front view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention, FIG. 7 is a top view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention, FIG. 8 is a bottom view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention, and FIG. 9 is a side view of an electrical board unit of a battery cell array of a battery pack according to an embodiment of the present invention.

[0070] Referring to FIGS. 3 to 9, the waterproof structure may be provided on the lower side (-Z direction side) of the electric board unit (100).

[0071] When the above waterproof structure is configured in this manner, the waterproof performance of the above electrical board unit (100) can be further improved. Specifically, the cooling medium leaked from inside the battery pack (1) may accumulate on the lower side or bottom inside the battery pack (1) due to gravity, which may result in a relatively high risk of flooding in the lower part of the above electrical board unit (100). However, when the above waterproof structure is provided on the lower side of the above electrical board unit (100) in this manner, the airtightness can be further increased in the lower side of the above electrical board unit (100), where the risk of flooding is relatively high, thereby further improving the waterproof performance of the above electrical board unit (100).

[0072]

[0073] Referring to FIGS. 3 to 9, the electric board unit (100) may include a board housing (110) and an electric board (130).

[0074] The board housing (110) may be mounted on one side of the battery cell array (10, see FIG. 1 and FIG. 2). For example, the board housing (110) may be mounted on one side of the front of the side frame. For example, the board housing (110) may be positioned at the front and / or rear of the battery cell array (10).

[0075] The above-mentioned electrical board (130) is provided within the board housing (110) and may be provided as a board or the like for controlling the battery cell array (10). The above-mentioned electrical board (130) may include electrical components for sensing the voltage, temperature, etc. of the battery cell array (10). For example, the above-mentioned electrical components may include at least one CMC, FPCB, ICB, etc.

[0076] The above waterproof structure can be configured to prevent the cooling medium from flowing into the electrical board (130), thereby preventing failure or short circuit of the electrical board (130).

[0077]

[0078] The bottom portion of the board housing (110) may be provided in a basket shape. Specifically, an insertion space (S) may be formed inside the board housing (110). The insertion space (S) may have a shape in which the bottom side is closed and the top side is open. Additionally, the sides of the insertion space (S) may be closed. For example, both sides of the insertion space (S) in the X-axis direction may be closed. An electrical board (130) may be inserted and mounted in the insertion space (S).

[0079] Through this basket shape, the electrical board (130) can be wrapped at the bottom of the board housing (110). The bottom of the board housing (110) with this basket shape can block external cooling media, etc., thereby more effectively preventing the penetration of the cooling media into the electrical board (130). The waterproof structure may be the bottom structure of the board housing (110) provided with the basket shape.

[0080] The bottom portion of the board housing (100) may be provided with an integrated basket structure having a cross-sectional structure that is approximately U-shaped. Specifically, the YZ plane cross-section or XZ plane cross-section of the bottom portion of the board housing (100) may have an approximately U-shaped cross-section. The upper portion of the basket-shaped structure of the bottom portion of the board housing (110) may be formed to extend to a predetermined height from the bottom portion of the board housing (110). That is, the upper portion of the board housing (110) may form a barrier structure of a predetermined height.

[0081]

[0082] Meanwhile, the board housing (100) may further include a cell array fastening portion (170). The cell array fastening portion (170) is a part for connecting the board housing and the battery cell array (10) to each other, and may be configured in the form of a hole into which a bolt member is inserted for, for example, bolting fastening.

[0083] The cell array fastening portion (170) may be provided at both ends of the board housing (100) that do not correspond to the insertion space (S). For example, the cell array fastening portion (170) may be provided at each end of the board housing (100) in the X direction.

[0084] When the cell array fastening part (170) is configured in this manner, the cell array fastening part (170) does not pass through the electrical board (130), so the waterproof performance of the electrical board unit (100) can be reliably guaranteed, and at the same time, the electrical board unit (100) can be effectively coupled to the battery cell array (10), which is an advantage.

[0085]

[0086] Referring to FIGS. 3 through 9, the electric board unit (100) may include a top cover (150).

[0087] The top cover (150) can be coupled to the board housing (110) so as to cover the electrical board (130) together with the board housing (110). The top cover (150) can be coupled to the upper part of the board housing (110). The top cover (150) can cover at least a portion of the open upper part of the insertion space (S) of the board housing (110). Additionally, the top cover (150) can cover at least a portion of the upper end of the electrical board (130).

[0088] In addition, when the top cover (150) is combined with the electrical board (130), movement such as rotation of the electrical board (130) that may occur on the upper side of the electrical board (130) can be effectively prevented, thereby enabling stable fixation of the electrical board (130), and as a result, the fixation of the battery pack (1) can be improved.

[0089]

[0090] The top cover (150) can be bolted to the board housing (110) for more stable fixation of the electrical board (130). That is, the top cover (150) and the electrical board (130) can be bolted to each other by a bolt member (B). The bolt member (B) can penetrate the top cover (150) and the electrical board (130) to allow the top cover (150) and the board housing (110) to be bolted to each other. Through this bolting connection by the bolt member (B), movement such as rotation of the electrical board (130) that may occur on the upper side of the electrical board (130) can be further prevented, thereby enabling more stable fixation of the electrical board (130), and as a result, the fixation of the battery pack (1) can be further improved.

[0091]

[0092] FIG. 10 is a drawing for explaining the mounting of an electrical board unit to the board housing side of an electrical board according to one embodiment of the present invention, and FIG. 11 is a drawing for explaining the board mounting guide of the board housing of an electrical board unit according to one embodiment of the present invention.

[0093] In FIG. 10, a front portion of the board housing (110) is shown cut open, and in FIG. 11, a portion of the board housing (110) is shown through the board housing (110) with the front board (130) inserted into it.

[0094] Referring to FIGS. 10 and FIGS. 11, the electric board (130) can be slidably inserted and mounted into the board housing (110).

[0095] The above sliding direction may be a direction from the upper side to the lower side of the board housing (110). Specifically, through the open upper part of the board housing (110), the electrical board (130) may be slid and inserted into the insertion space (S) of the board housing (110) from the upper side to the lower side.

[0096] The above sliding mounting may be a press-fit sliding mounting. That is, the electrical board (130) may be slidingly mounted by being fitted into the board housing (110) in close contact.

[0097] In this way, when the electrical board (130) is slidably inserted and mounted into the board housing (110), the electrical board (130) can be stably mounted into the board housing (110). Additionally, since the electrical board (130) can be easily mounted into the board housing (110), the assembly of the battery pack (1) can be improved.

[0098]

[0099] The board housing (110) may be provided with at least one board mounting guide (115) for guiding the sliding insertion mounting of the electrical board (130). The board mounting guide (115) may be provided in multiple numbers and may be spaced apart from each other at a predetermined distance within the board housing (110). For example, the board mounting guide (115) may be placed at each of the two edges of the insertion space (S) and between the two edges. For example, as shown in FIG. 10, five board mounting guides (115) may be provided in the board housing (110) spaced apart from each other along the X-axis direction.

[0100] In this way, when the board housing (110) is provided with at least one board mounting guide (115), the press-fit sliding mounting of the electrical board (130) into the board housing (110) can be effectively implemented. Additionally, when a plurality of the board mounting guides (115) are spaced apart from each other, the electrical board (130) can be positioned more stably in the board housing (110).

[0101]

[0102] FIGS. 12 and FIGS. 13 are drawings for explaining the mounting structure of an electrical board unit according to an embodiment of the present invention.

[0103] FIG. 12 is a front view of the battle board unit (100), and FIG. 13 is a rear view of the battle board unit (100).

[0104] Referring to FIGS. 12 and 13, the bolting connection structure formed by the bolt member (B) may be provided at least two locations at the board bolting points (BP) for more secure fastening. Here, the bolting points (BP) can be understood as the point where the bolting connection is formed or the surrounding area.

[0105] In addition, a separate sealing member may be configured to be fitted between the top cover (150) and the board housing (110). The sealing member may be provided as a component such as a sealant or an O-ring. Accordingly, sealing can be secured at the boundary surface (H) between the top cover (150) and the board housing (110), thereby providing a waterproof structure on the upper side of the electrical board unit (10). Furthermore, the sealing member may be configured to be fitted between the top cover (150) and the electrical board (130) or between the board housing (110) and the electrical board (130).

[0106] The board housing (110) may be provided with at least three fitting slide points (FS) for a more secure fixation when the electrical board (130) slides. The fitting slide points (FS) can be understood as parts where the electrical board (130) is press-fitted and slide-mounted, and can be understood as points or surrounding parts where the electrical board (130) comes into close contact with the aforementioned board mounting guide (115).

[0107]

[0108] FIG. 14 is a drawing for explaining an electrical board unit of a battery pack according to another embodiment of the present invention.

[0109] Figure 14 shows a front portion of the battle board unit (100) cut open.

[0110] Hereinafter, with reference to FIG. 14, a battery pack (1) according to another embodiment of the present invention will be described in detail. In the electrical board unit (100) of the battery pack (1) according to another embodiment of the present invention, the lower portion of the electrical board (130) can be fixed to the board housing (110) through an adhesive member (G). Specifically, the lower bottom portion of the insertion space (S) of the board housing (110) and the lower portion of the electrical board (130) can be fixedly joined by being bonded to each other through the adhesive member (G).

[0111] Here, the adhesive member (G) may include an epoxy-based or acrylic-based adhesive glue.

[0112] When the above-described electrical board unit (100) is configured in this way, the above-described electrical board (130) can be fixed to the board housing (110) more strongly and effectively, and additional waterproofing effect of the above-described electrical board unit (100) can be expected.

[0113]

[0114] A filling member (R) may be filled inside the board housing (110). The filling member (R) may include at least one of potting resin and foam. Here, the potting resin may include a silicone-based resin, and the foam may include a polyurethane-based resin.

[0115] When the above-described electrical board unit (110) is configured in this manner, the space between the electrical board (130) and the board housing (110) can be filled without gaps by a filling member (R), thereby maximizing the waterproofing effect of the above-described electrical board unit (100). Furthermore, since the above-described electrical board (130) can be fixed in close contact with the board housing (110), the fixability of the above-described electrical board (130) can be improved.

[0116] Meanwhile, the board housing (110) may be provided with a compression pad. The compression pad may be configured to wrap around at least a portion of the electrical board (130). This compression pad can minimize the amount of impact that may be applied to the electrical board (130) by preferentially absorbing and cushioning external shocks.

[0117] Thus, in a battery pack according to another embodiment of the present invention, the electrical board unit (100) may be provided with at least one of the aforementioned adhesive member (G), filling member (R), and compression pad, thereby further enhancing the waterproofing and fixing effect of the electrical board (130). As a result, the structural stability of the battery pack may be improved. Furthermore, a battery pack capable of minimizing the amount of impact applied from the outside may be provided, even if an impact is applied from the outside.

[0118]

[0119] FIG. 15 is a drawing illustrating a state in which a cooling medium is accumulated inside a battery pack, for explaining the waterproof structure of an electrical board unit according to one embodiment of the present invention.

[0120] Referring to FIG. 15, a cooling medium (C, Coolant) may leak out inside the pack case (50) of the battery pack (1). The cooling medium (C) may leak out from the cooling unit provided in the aforementioned battery cell array (10), and in particular, when the battery pack (1) is tilted to one side, it may accumulate more severely on one side.

[0121] As previously described, in the battery pack according to the present invention, since the electrical board unit (100) has a waterproof structure, the cooling medium (C) can be effectively prevented from flowing into the electrical board unit (100).

[0122] In particular, as previously described, the above-mentioned electrical board unit (100) may be provided with a waterproof structure on the lower side and may also have a basket-shaped waterproof structure, so that even if the cooling medium leaks out, the inflow of the leaked cooling medium into the electrical board unit (100) can be prevented more reliably.

[0123]

[0124] Meanwhile, referring again to FIG. 1, a plurality of battery cell arrays (10) may be arranged inside the battery pack (1) according to the present invention. The plurality of battery cell arrays (10) may have a structure in which they are stacked in a multilayer structure in the vertical direction or the Z-axis direction. The plurality of battery cell arrays (10) may have a structure in which they form rows in the horizontal direction or the X-axis direction or the Y-axis direction.

[0125] The pack case (50) of the battery pack (1) according to the present invention can accommodate at least one battery cell array (10) or a plurality of battery cell arrays (10). The pack case (50) may have a bottom portion forming a bottom, a side wall portion forming a side wall, and a pack lid covering the battery cell array (10).

[0126]

[0127] FIG. 16 is a drawing for explaining an automobile according to one embodiment of the present invention.

[0128] Referring to FIG. 16, a vehicle (V) according to one embodiment of the present invention may include at least one battery pack (1) according to the present invention. In addition, the vehicle (V) according to one embodiment of the present invention may include various other components included in the vehicle in addition to the battery pack (1). For example, the vehicle (V) according to one embodiment of the present invention may include, in addition to the battery pack (1) according to one embodiment of the present invention, a vehicle body, a motor, an ECU (electronic control unit), or a control device.

[0129] In addition, it is obvious that the battery pack (1) according to one embodiment of the present invention may also be provided in other devices, mechanisms, and facilities, such as an energy storage system using a secondary battery, in addition to the vehicle (V).

[0130] According to the various embodiments described above, a battery pack (1) with improved waterproof performance and a vehicle (V) including the same can be provided.

[0131]

[0132] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention.

[0133] [Explanation of the symbol]

[0134] 1: Battery pack

[0135] 10: Battery cell array

[0136] 50: Pack case

[0137] 100: Battlefield Board Unit

[0138] 110: Board housing

[0139] 115: Board Mounting Guide

[0140] 130: Battlefield Board

[0141] 150: Top cover

[0142] 170 : Cell array connection part

[0143] B: Bolt member

[0144] S : Insertion space

[0145] BP: Vaulting Point

[0146] H: Boundary surface

[0147] FS: Fitting slide point

[0148] G : Adhesive member

[0149] R : Filling member

[0150] V: Car

Claims

1. At least one battery cell array having an electrical board unit on at least one side; and It includes a pack case that accommodates at least one battery cell array, The above-mentioned battlefield board unit includes, A battery pack characterized by having a waterproof structure that prevents the inflow of a cooling medium into the interior.

2. In Paragraph 1, The above waterproof structure is, A battery pack characterized by being provided on the lower side of the above-mentioned electrical board unit.

3. In Paragraph 1, The above-mentioned battlefield board unit is, A board housing mounted on one side of the battery cell array; and It is provided within the above board housing and includes an electrical board for controlling the battery cell array, The above waterproof structure is, A battery pack characterized by being configured to prevent the inflow of the cooling medium to the aforementioned electrical board.

4. In Paragraph 3, The bottom of the above board housing is, A battery pack characterized by being provided in a basket shape to implement the above-mentioned waterproof structure.

5. In Paragraph 3, The above electrical board is, A battery pack characterized by being slidably inserted and mounted into the above-mentioned board housing.

6. In Paragraph 5, The above sliding direction is, A battery pack characterized by a direction from the upper side to the lower side of the board housing.

7. In Paragraph 5, In the above board housing, A battery pack characterized by having at least one board mounting guide for guiding the sliding insertion mounting of the above-mentioned electrical board.

8. In Paragraph 3, The above-mentioned battlefield board unit is, A battery pack characterized by including a top cover coupled to the board housing so as to cover the electrical board together with the board housing.

9. In Paragraph 8, The above top cover is, A battery pack characterized by being bolted together with the above-mentioned board housing.

10. In Paragraph 3, The lower part of the above-mentioned electrical board is, A battery pack characterized by being fixed to the board housing through an adhesive member.

11. In Paragraph 10, The above adhesive member is, A battery pack characterized by including an epoxy-based or acrylic-based adhesive glue.

12. In Paragraph 3, Inside the above board housing, A battery pack characterized by being filled with potting resin.

13. In Paragraph 12, The above potting resin is, A battery pack characterized by including silicone resin.

14. In Paragraph 3, Inside the above board housing, A battery pack characterized by being filled with foam.

15. In Paragraph 14, The above foam is, A battery pack characterized by including a polyurethane-based resin.

16. An automobile characterized by including at least one battery pack according to any one of claims 1 to 15.

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