Busbar cover and battery pack including the busbar cover

Abstract

According to an exemplary embodiment of the present invention, a manifold cover can be provided. The manifold cover includes: a lower cover for receiving a manifold; an upper cover connected to the lower cover and covering the manifold; and a fire-resistant coating layer on the inner surface of the lower cover, wherein the manifold is disposed on a mounting surface of the lower cover, the mounting surface including a first hole that exposes at least a portion of the contact portion of the manifold.

Description

Technical Field

[0001] This disclosure relates to a busbar cover and a battery pack including the busbar cover.

[0002] This application claims the benefit of Korean Patent Application No. 10-2024-0178396, filed on December 4, 2024, the disclosure of which is incorporated herein by reference. Background Technology

[0003] Battery packs used in electric vehicles and other applications have a structure in which multiple battery cell assemblies are connected in series or in parallel to obtain high output power, and each battery cell assembly includes multiple secondary batteries.

[0004] A secondary battery includes a positive current collector and a negative current collector, a separator, active materials, an electrolyte solution, etc., and can be repeatedly charged and discharged through electrochemical reactions between these components.

[0005] Busbars are used for electrical connection of battery cell assemblies. Busbars are used to electrically connect the terminals of adjacent battery cell assemblies or to connect battery cell assemblies to external electrical devices. Summary of the Invention

[0006] Technical issues

[0007] The technical problem to be solved by the present invention is to provide a manifold cover with improved performance and reliability.

[0008] The technical problem to be solved by the present invention is to provide a battery pack with improved safety.

[0009] The technical problem to be solved by the present invention is to provide a battery pack with improved performance and reliability.

[0010] Technical solution

[0011] According to an exemplary embodiment of the present disclosure for solving the above-mentioned problems, a manifold cover can be provided. The manifold cover includes: a lower cover that accommodates a manifold; an upper cover that is coupled to the lower cover and covers the manifold; and a fire-resistant coating layer on the inner surface of the lower cover, wherein the manifold is disposed on a mounting surface of the lower cover, and the mounting surface may include a first hole that exposes at least a portion of the contact portion of the manifold.

[0012] In some implementations, the refractory coating may include ceramic materials.

[0013] In some embodiments, the manifold cover may also include a fire-resistant coating on the inner surface of the cover.

[0014] In some embodiments, the lower cover includes a support portion that protrudes in the opposite direction to that toward the upper cover, and the support portion may overlap with the main body of the busbar.

[0015] In some embodiments, the support includes a bottom portion that is at the maximum distance from the top cover, and the bottom portion may include a second hole.

[0016] In some implementations, the first hole may extend to at least a portion of the support.

[0017] In some embodiments, the support includes a bottom portion that is at the maximum distance from the top cover, and the first hole may extend to the bottom portion of the support.

[0018] According to an exemplary embodiment of the present disclosure for solving the above-described problems, a battery pack can be provided. The battery pack includes: a battery pack housing including a crossbeam; a first battery cell assembly and a second battery cell assembly housed within the battery pack housing and spaced apart from each other in a first direction with the crossbeam inserted between the first and second battery cell assemblies; a busbar electrically connected to the first and second battery cell assemblies and extending along the first direction; and a busbar cover covering the busbar, wherein each of the first and second battery cell assemblies includes a terminal portion coupled to the busbar, the busbar cover including: a lower cover housing the busbar; and an upper cover coupled to the lower cover and covering the busbar, wherein the lower cover may include a first hole exposing at least a portion of the terminal portion.

[0019] In some implementations, the first hole can be penetrated by a fastening member that connects the busbar to the terminal portion.

[0020] In some embodiments, each of the first battery cell assembly and the second battery cell assembly further includes a lifting portion, and the lower cover may include a first support portion and a second support portion, the first support portion and the second support portion protruding to reach the lifting portions of the first battery cell assembly and the second battery cell assembly, respectively.

[0021] In some embodiments, the first support and the second support may be spaced apart from each other, and the crossbeam is inserted between the first support and the second support.

[0022] In some embodiments, the first support includes a bottom portion that contacts the lifting portion, and the bottom portion of the first support may include a second hole that exposes at least a portion of the lifting portion.

[0023] In some embodiments, the first support includes a bottom portion that contacts the lifting portion, and the first hole may extend to the bottom portion of the support.

[0024] In some embodiments, the battery pack may also include a refractory coating on the inner surface of each of the lower and upper covers, wherein the refractory coating may include a ceramic inorganic material.

[0025] Beneficial effects

[0026] According to an exemplary embodiment of this disclosure, the busbar cover may include a lower cover and an upper cover coated with a refractory material. The lower cover includes a support portion and may include an opening that exposes at least a portion of the contact portion of the busbar. This allows the busbar to be protected and supported.

[0027] According to exemplary embodiments of this disclosure, a manifold cover with improved performance and reliability can be provided.

[0028] According to an exemplary embodiment of this disclosure, the battery pack may include a busbar cover that covers the busbar. This allows the busbar to be protected from heat that may be generated inside the battery pack and provides support for the busbar.

[0029] According to exemplary embodiments of this disclosure, a battery pack with improved safety can be provided.

[0030] According to exemplary embodiments of this disclosure, battery packs with improved performance and reliability can be provided.

[0031] The effects obtainable from the exemplary embodiments of this disclosure are not limited to those mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of this disclosure pertain. In other words, unintended effects of practicing the exemplary embodiments of this disclosure can also be derived by those skilled in the art from the exemplary embodiments of this disclosure. Attached Figure Description

[0032] Figure 1 This is a perspective view of a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0033] Figure 2 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0034] Figure 3 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0035] Figure 4This is a diagram illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0036] Figure 5 This is a perspective view illustrating the manifold of the manifold cover according to an embodiment based on the technical concept of this disclosure.

[0037] Figure 6 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0038] Figure 7 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0039] Figure 8 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0040] Figure 9 This is a perspective view of a manifold cover according to an embodiment based on the technical concept of this disclosure.

[0041] Figure 10 This is a diagram illustrating a battery pack according to an embodiment based on the technical concept of this disclosure.

[0042] Figure 11 This is a diagram illustrating a battery pack according to an embodiment based on the technical concept of this disclosure.

[0043] Figure 12 This is a diagram illustrating a battery pack according to an embodiment based on the technical concept of this disclosure. Detailed Implementation

[0044] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that the terms and words used in this specification and claims should not be construed as having their ordinary or dictionary meanings, but rather as having meanings and concepts consistent with the technical idea of ​​the present disclosure, based on the principle that the inventor can define the terms in the manner he considers best suited to describe his disclosure.

[0045] Therefore, it should be understood that the embodiments described herein and the configurations shown in the accompanying drawings are merely the most preferred embodiments of this disclosure and are not an exhaustive list of the technical ideas of this disclosure, and various equivalents and modifications that can replace them may exist at the time of submission.

[0046] Furthermore, in describing this disclosure, detailed descriptions of relevant known configurations or features have been omitted where such descriptions would obscure the essence of this disclosure.

[0047] Because the embodiments of this disclosure are intended to explain the disclosure more fully to those skilled in the art, the shapes and dimensions of the components in the drawings may be exaggerated, omitted, or shown schematically for clarity. Therefore, the dimensions or proportions of each component do not necessarily indicate its actual size or proportion.

[0048] (First Implementation)

[0049] Figure 1 This is a perspective view of a manifold cover 140 according to an embodiment based on the technical concept of this disclosure.

[0050] Figure 2 This is a perspective view illustrating a manifold cover 140 according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 2 This is a diagram showing a busbar 130 housed in a lower cover 140B of a busbar cover 140 according to an embodiment based on the technical concept of this disclosure.

[0051] Figure 3 This is a perspective view illustrating a manifold cover 140 according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 3 This is a diagram showing the lower cover 140B of the manifold cover 140 according to an embodiment based on the technical concept of this disclosure.

[0052] Figure 4 This is a diagram illustrating the busbar cover 140 according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 4 This is a top view of the lower cover 140B of the manifold cover 140 according to an embodiment based on the technical concept of this disclosure.

[0053] Figure 5 This is a perspective view illustrating the busbar 130 of the busbar cover 140 according to an embodiment based on the technical concept of this disclosure.

[0054] Reference Figures 1 to 5 A busbar cover 140 can be provided to cover the busbar 130. The busbar cover 140 may include a lower cover 140B and an upper cover 140T.

[0055] In one embodiment, the lower cover 140B can accommodate the busbar 130. Specifically, the lower cover 140B can include a mounting surface 140B_S on which the busbar 130 is disposed. The mounting surface 140B_S can contact the busbar 130. The mounting surface 140B_S can be located below the busbar 130. The mounting surface 140B_S can include portions extending along a first direction D1 and a second direction D2. The mounting surface 140B_S can overlap with the busbar 130 in a third direction D3. The first direction D1, the second direction D2, and the third direction D3 can intersect each other.

[0056] In one embodiment, the upper cover 140T may be coupled to the lower cover 140B. The upper cover 140T may cover the busbar 130 housed in the lower cover 140B. The upper cover 140T may extend along a first direction D1 and a second direction D2. The upper cover 140T may overlap with the lower cover 140B and the busbar 130 in a third direction D3. The upper cover 140T may be spaced apart from the busbar 130 and have a predetermined distance between them. The upper cover 140T may not be in direct contact with the busbar 130.

[0057] In one embodiment, the busbar 130 may have a shape extending along a first direction D1. The busbar 130 may include a main body 131 and contact portions 132 at both ends. The contact portions 132 at both ends may be spaced apart from each other in the first direction D1 with the main body 131 inserted between them. Each contact portion 132 may include a fastening hole 133 for connection with different electrical connections. The busbar 130 may include a metallic conductor, such as high-purity copper (e.g., C1100) or aluminum.

[0058] In one embodiment, the lower cover 140B may include a refractory coating 140_C on its inner surface. The refractory coating 140_C may be disposed on the inner surface of the lower cover 140B, including the mounting surface 140B_S. Specifically, the refractory coating 140_C may include a refractory material. For example, the refractory coating 140_C may include a ceramic material. For example, the refractory coating 140_C may include an inorganic ceramic material.

[0059] For example, the refractory coating 140_C can be ceramized at high temperatures to acquire refractory properties. For example, refractory materials can refer to materials that are ceramized at temperatures of 500°C or higher and therefore do not easily deform their structure at high temperatures. For example, refractory materials can refer to materials capable of maintaining their structure at temperatures of 500°C or higher. Therefore, even in the presence of heat or flame generated outside the busbar 130, the structure will not deform and the busbar 130 can be protected from the effects of such heat or flame.

[0060] In one embodiment, the upper cover 140T may include a refractory coating (not shown) on its inner surface. The refractory coating may be disposed on the surface of the upper cover 140T facing the lower cover 140B. Specifically, the refractory coating may include a refractory material. For example, the refractory coating may include a ceramic material. For example, the refractory coating may include a ceramic inorganic material. Therefore, even in the presence of heat or flame generated outside the busbar 130, the structure will not deform and can protect the busbar 130 from the effects of such heat or flame.

[0061] In an embodiment, the lower cover 140B may include one or more support portions 140S protruding in a direction opposite to that toward the upper cover 140T. Specifically, the lower cover 140B may include a first support portion 141 and a second support portion 142 spaced apart from each other in a first direction D1.

[0062] Specifically, the mounting surface 140B_S of the lower cover 140B may include a curved portion. A portion of the mounting surface 140B_S of the lower cover 140B may be bent to protrude in a direction opposite to that toward the upper cover 140T, thereby forming a first support portion 141 and a second support portion 142. For example, the first support portion 141 and the second support portion 142 may be integrally formed with the remainder of the lower cover 140B.

[0063] In this embodiment, each of the first support portion 141 and the second support portion 142 may include bottom portions 141_B and 142_B that have the greatest distance from the upper cover 140T. For example, the bottom portion 141_B of the first support portion 141 may refer to the portion of the first support portion 141 that has the greatest distance from the upper cover 140T in the third direction D3. The bottom portion 141_B of the first support portion 141 may refer to the portion of the first support portion 141 that has the lowest height in the third direction D3. For example, the bottom portion 142_B of the second support portion 142 may refer to the portion of the second support portion 142 that has the greatest distance from the upper cover 140T in the third direction D3. The bottom portion 142_B of the second support portion 142 may refer to the portion of the second support portion 142 that has the lowest height in the third direction D3. For example, the bottom portions 141_B of the first support portion 141 and the bottom portions 142_B of the second support portion 142 may be parallel to the upper cover 140T.

[0064] In this embodiment, the first support portion 141 and the second support portion 142 may not overlap with the contact portion 132 of the busbar 130. Specifically, the first support portion 141 and the second support portion 142 may not overlap with the contact portion 132 of the busbar 130 in the third direction D3. Specifically, the first support portion 141 and the second support portion 142 may overlap with the main body portion 131 of the busbar 130. For example, the first support portion 141 and the second support portion 142 may overlap with the main body portion 131 of the busbar 130 in the third direction D3.

[0065] In one embodiment, the mounting surface 140B_S of the lower cover 140B may include a hole 140H. Specifically, the hole 140H may expose at least a portion of the contact portion 132 of the busbar 130. For example, the hole 140H may expose the fastening hole 133 of the busbar 130. The hole 140H may expose at least a portion of the contact portion 132 and extend along the first direction D1 to further expose a portion of the body portion 131.

[0066] The hole 140H may extend to at least a portion of the support portion 140S. For example, the hole 140H may extend along the mounting surface 140B_S constituting the first support portion 141. As described above, the mounting surface 140B_S may include a curved portion constituting the first support portion 141, and the hole 140H may extend along this curved portion. For example, the hole 140H may extend along the curved portion to the bottom portion 141_B of the first support portion 141. In other words, the hole 140H may integrally include a portion exposing at least a portion of the contact portion 132 and a portion disposed at the bottom portion 141_B of the first support portion 141.

[0067] Similarly, the hole 140H may extend along the mounting surface 140B_S constituting the second support portion 142. For example, the hole 140H may extend along a curved portion of the mounting surface 140B_S constituting the second support portion 142 to the bottom portion 142_B of the second support portion 142. The hole 140H may integrally include a portion that exposes at least a portion of the contact portion 132 and a portion disposed at the bottom portion 142_B of the second support portion 142.

[0068] In one embodiment, the hole 140H can be used to connect the busbar 130 to an external terminal portion. For example, the fastening hole 133 of the busbar 130 is exposed through the hole 140H, and a fastening member can pass through the fastening hole 133 and the hole 140H in sequence.

[0069] In one embodiment, the hole 140H can be used to secure the manifold cover 140 to an external component. For example, the hole 140H provided in the support portion 140S can be penetrated by a fixing member.

[0070] Reference Figures 1 to 5 The described busbar cover 140 may include a refractory material on its inner surface. Therefore, the busbar 130 can be protected from heat that may be generated outside the busbar 130.

[0071] Reference Figures 1 to 5 The described busbar cover 140 may include a support portion 140S projecting from the lower cover 140B. The support portion 140S may be mounted on an external component to support the busbar 130 and the busbar cover 140.

[0072] Reference Figures 1 to 5 The described busbar cover 140 may also include a hole 140H provided in the lower cover 140B. The hole 140H not only exposes the fastening hole 133, allowing the busbar 130 to be connected to an external terminal, but also secures the support portion 140S to an external component. Therefore, even in the presence of vibrations that may occur during a thermal runaway event, the busbar 130 will not shift. Furthermore, the hole 140H can also be used to dissipate heat generated from the busbar 130.

[0073] According to embodiments based on the technical concept of this disclosure, a manifold cover 140 with improved performance and reliability can be provided.

[0074] (Second Implementation)

[0075] Figure 6 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 6 This is a figure showing the lower cover 140B1 of the manifold cover according to an embodiment based on the technical concept of this disclosure. The lower cover 140B1 is referenced... Figures 1 to 4 Another embodiment of the lower cover 140B is described below, and the differences will be mainly described below.

[0076] Refer to together Figure 1 , Figure 2 and Figure 6 The lower cover 140B1 may include one or more support portions 140S protruding in a direction opposite to that toward the upper cover 140T. Specifically, the lower cover 140B1 may include a first support portion 141 and a second support portion 142 spaced apart from each other in a first direction D1. The first support portion 141 may include a bottom portion 141_B. The second support portion 142 may include a bottom portion 142_B.

[0077] In one embodiment, the lower cover 140B1 may include a first hole 140H1 and a second hole 140H2 that are separate from each other. The first hole 140H1 and the second hole 140H2 may have different heights in the third direction D3.

[0078] The first hole 140H1 can expose the contact portion 132 of the busbar 130 (see...). Figure 5 At least a portion thereof. For example, the first hole 140H1 may expose the fastening hole 133 of the manifold 130 (see Figure 5 Specifically, the first hole 140H1 can be used to connect the busbar 130 to an external terminal portion. For example, the fastening hole 133 of the busbar 130 is exposed through the first hole 140H1, and the fastening member can pass through the fastening hole 133 and the first hole 140H1 in sequence.

[0079] The second hole 140H2 can be provided at the bottom portion of the support portion 140S. For example, the bottom portion 141_B of the first support portion 141 may include the second hole 140H2. The bottom portion 142_B of the second support portion 142 may include the second hole 140H2. Specifically, the second hole 140H2 can be used to fix the lower cover 140B1 to another component. For example, the second hole 140H2 provided in the support portion 140S can be penetrated by a fixing member.

[0080] Although not shown, the lower cover 140B1 may include a refractory coating (not shown) on its inner surface. For example, the refractory coating may include a ceramic material. For example, the refractory coating may include a ceramic inorganic material.

[0081] According to embodiments based on the technical concept of this disclosure, a manifold cover with improved performance and reliability can be provided.

[0082] (Third implementation method)

[0083] Figure 7 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 7 This is a figure showing the lower cover 140B2 of the manifold cover according to an embodiment based on the technical concept of this disclosure. The lower cover 140B2 is referenced... Figures 1 to 4 Another embodiment of the lower cover 140B is described below, and the differences will be mainly described below.

[0084] Refer to together Figure 1 , Figure 2 and Figure 7 The lower cover 140B2 may include a first hole 140H1. The first hole 140H1 may expose the contact portion 132 of the busbar 130 (see...). Figure 5 At least a portion thereof. For example, the first hole 140H1 may expose the fastening hole 133 of the manifold 130 (see Figure 5Specifically, the first hole 140H1 can be used to connect the busbar 130 to an external terminal portion. For example, the fastening hole 133 of the busbar 130 is exposed through the first hole 140H1, and the fastening member can pass through the fastening hole 133 and the first hole 140H1 in sequence.

[0085] Although not shown, the lower cover 140B2 may include a refractory coating on its inner surface. For example, the refractory coating may include a ceramic material. For example, the refractory coating may include a ceramic inorganic material.

[0086] According to embodiments based on the technical concept of this disclosure, a manifold cover with improved performance and reliability can be provided.

[0087] (Fourth Implementation)

[0088] Figure 8 This is a perspective view illustrating a manifold cover according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 8 This is a figure showing the lower cover 140B3 of the manifold cover according to an embodiment based on the technical concept of this disclosure. The lower cover 140B3 is referenced... Figures 1 to 4 Another embodiment of the lower cover 140B is described below, and the differences will be mainly described below.

[0089] Refer to together Figure 1 , Figure 2 and Figure 8 The lower cover 140B3 may include a third hole 140H3. The third hole 140H3 may expose the contact portion 132 of the busbar 130 (see...). Figure 5 At least a portion thereof. For example, the third hole 140H3 may expose the fastening hole 133 of the manifold 130 (see Figure 5 The third hole 140H3 exposes at least a portion of the contact portion 132 of the busbar 130 and extends along the first direction D1 to further expose a portion of the body portion 131. Specifically, the third hole 140H3 can be used to connect the busbar 130 to an external terminal portion. For example, the fastening hole 133 of the busbar 130 is exposed through the third hole 140H3, and a fastening member can pass through the fastening hole 133 and the third hole 140H3 in sequence. The third hole 140H3 can also be used to release heat generated from the busbar 130.

[0090] Although not shown, the lower cover 140B3 may include a refractory coating on its inner surface. For example, the refractory coating may include a ceramic material. For example, the refractory coating may include a ceramic inorganic material.

[0091] According to embodiments based on the technical concept of this disclosure, a manifold cover with improved performance and reliability can be provided.

[0092] (Fifth Implementation)

[0093] Figure 9 This is a perspective view of a busbar cover 140' according to an embodiment based on the technical concept of this disclosure. The busbar cover 140' is referenced... Figures 1 to 5 Another embodiment of the manifold cover 140 is described below, and the differences will be mainly described below.

[0094] Refer to together Figure 2 , Figure 3 , Figure 5 and Figure 9 The busbar cover 140' may include a lower cover 140B' and an upper cover 140T'. The lower cover 140B' accommodates the busbar 130, and the upper cover 140T' may be connected to the lower cover 140B' to cover the busbar 130.

[0095] In this embodiment, each of the lower cover 140B' and the upper cover 140T' may include a curved portion. Specifically, the lower cover 140B' may include a curved portion 140B'_R. The upper cover 140T' may include a curved portion 140T'_R. The curved portions 140B'_R of the lower cover 140B' and 140T'_R of the upper cover 140T' may overlap on a third direction D3. When the upper cover 140T' is connected to the lower cover 140B', the curved portion 140T'_R of the upper cover 140T' may be connected to the curved portion 140B'_R of the lower cover 140B'.

[0096] In an embodiment, the lower cover 140B' may include one or more support portions 140S protruding in a direction opposite to that toward the upper cover 140T'. Specifically, the lower cover 140B' may include a first support portion 141 and a second support portion 142 spaced apart from each other in a first direction D1.

[0097] The curved portion 140B'_R of the lower cover 140B' can overlap with the support portion 140S in the third direction D3. The curved portion 140B'_R of the lower cover 140B' can overlap with the first support portion 141 and the second support portion 142 in the third direction D3.

[0098] The curved portion 140T'_R of the upper cover 140T' can overlap with the support portion 140S in the third direction D3. The curved portion 140T'_R of the upper cover 140T' can overlap with the first support portion 141 and the second support portion 142 in the third direction D3.

[0099] According to embodiments based on the technical concept of this disclosure, a manifold cover 140' with improved performance and reliability can be provided.

[0100] (Sixth Implementation Method)

[0101] Figure 10 This is a diagram illustrating a battery pack 100 according to an embodiment based on the technical concept of this disclosure.

[0102] Figure 11 This is a diagram illustrating a battery pack 100 according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 11 This is a diagram showing the connection between the busbar 130, covered by the busbar cover 140, and the battery cell assembly 120 of the battery pack 100 when each component is separated.

[0103] Figure 12 This is a diagram illustrating a battery pack 100 according to an embodiment based on the technical concept of this disclosure. Specifically, Figure 12 This is a diagram showing the state in which the busbar 130, covered by the busbar cover 140, is connected to the battery cell assembly 120 of the battery pack 100.

[0104] Reference Figures 10 to 12 The battery pack 100 may include a battery pack housing 110, a plurality of battery cell assemblies 120, and a crossbeam 117. The battery pack 100 may be an end product installed in applications such as vehicles.

[0105] The battery pack housing 110 provides space for mounting the battery cell assembly 120. The battery pack housing 110 may include a base plate 111, side walls 112, 113, 114, 115 and a central beam 116.

[0106] Here, the first direction D1 and the second direction D2 can be substantially parallel to the mounting surface of the base plate 111 (i.e., the surface facing the battery cell assembly 120), and the third direction D3 can be substantially perpendicular to the mounting surface of the base plate 111.

[0107] Side walls 112, 113, 114, and 115 may be substantially perpendicular to the base plate 111. The central beam 116 may extend along the first direction D1. The central beam 116 may be inserted between side walls 112 and 113.

[0108] The base plate 111 may include multiple cooling channels. The multiple cooling channels can provide pathways for the movement of a coolant (e.g., water).

[0109] Multiple battery cell assemblies 120 can be mounted on the base plate 111 of the battery pack housing 110. The base plate 111 can support the multiple battery cell assemblies 120. Side walls 112, 113, 114, and 115 can horizontally surround the multiple battery cell assemblies 120. The side walls 112, 113, 114, and 115 can protect the multiple battery cell assemblies 120.

[0110] Figure 10 The arrangement of multiple battery cell assemblies 120 in the structure can be referred to as 3 2. Arrangement. Figure 10 The arrangement of the multiple battery cell assemblies 120 disclosed herein is a non-limiting example and does not limit the technical concept of this disclosure in any way. Based on the content described herein, those skilled in the art will be able to readily obtain the M Multiple battery cell assemblies 120 arranged in N (where M and N are each integers of 2 or greater).

[0111] The battery pack 100 may also include a cover that is coupled to the sidewalls 112, 113, 114, 115 of the battery pack housing 110. The cover may cover components installed inside the battery pack 100, such as multiple battery cell assemblies 120 and electrical components. The cover may be secured to the battery pack housing 110 by a mechanical coupling device (e.g., bolt connection).

[0112] The battery pack 100 may also include a battery management system (BMS). The BMS can be configured to perform monitoring, balancing, and control of the battery pack 100. Monitoring of the battery pack 100 may include measuring the voltage and current at specific nodes within the multiple battery cell assemblies 120, and measuring the temperature at designated locations within the battery pack 100. The battery pack 100 may include measuring instruments for measuring the aforementioned voltage, current, and temperature.

[0113] Balancing the battery pack 100 is an operation to reduce deviations among the multiple battery cell assemblies 120. Controlling the battery pack 100 includes preventing overcharging, over-discharging, and overcurrent. Through monitoring, balancing, and control, the battery pack 100 can operate under optimal conditions, thereby preventing a shortened lifespan for each of the multiple battery cell assemblies 120.

[0114] The battery pack 100 may also include additional electrical components, such as a cooling device, a power relay assembly (PRA), and a safety plug. The cooling device may include a cooling fan. The cooling fan can prevent each of the multiple battery cell assemblies 120 from overheating by circulating air within the battery pack 100. The PRA can be configured to supply or disconnect power from the high-voltage battery to an external load (e.g., a vehicle's motor). In the event of an abnormal voltage, such as a voltage surge, the PRA can protect the multiple battery cell assemblies 120 and the external load (e.g., the vehicle's motor) by disconnecting the power supply to the external load. Additional electrical components may be inserted between the multiple battery cell assemblies 120 and the sidewall 115. The space between the battery cell assemblies 120 and the sidewall 115 may also be referred to as an electrical component mounting area.

[0115] exist Figure 11 and Figure 12In this disclosure, each of the plurality of battery cell assemblies 120 in the battery pack 100 is exemplified as a battery module, but the technical concept of this disclosure is not limited thereto. For example, each of the plurality of battery cell assemblies 120 may be a battery module having a module-less module housing configured such that at least one surface is open, or a cell block having all its upper, lower, left, and right surfaces open. In this way, according to the technical concept of this disclosure, a so-called cell-to-battery pack structure of the battery pack 100 composed of cell blocks or battery modules can be configured, wherein all or part of the module housing is omitted.

[0116] The battery cell assembly 120 may include a module housing and a plurality of battery cells (not shown) therein. The plurality of battery cells are connected to each other in series and / or parallel circuits to charge and discharge at specified voltages and currents. A pair of terminal portions 122, serving as input / output terminals for the plurality of battery cells as electrical connections, are disposed on the exterior of the battery cell assembly 120. This pair of terminal portions 122 may include a positive terminal and a negative terminal.

[0117] A pair of lifting sections 123 may be disposed between the paired terminal sections 122. Since the battery cell assembly 120 carrying multiple battery cells has considerable weight, a lifting device is used to perform the operation of storing or removing the battery cell assembly 120 relative to the battery pack 100. The lifting sections 123 are disposed on the module housing for handling such battery cell assemblies 120, and a pair of lifting sections 123 are disposed on each of the front and rear surfaces of the module housing for balance.

[0118] The battery pack 100 may also include a busbar 130 electrically connecting multiple battery cell assemblies 120. Specifically, the busbar 130 may be connected to the terminal portion 122 of each of the multiple battery cell assemblies 120.

[0119] like Figure 11 and Figure 12 As shown, the busbar 130 can electrically connect to multiple battery cell assemblies 120 within the battery pack 100. Specifically, the busbar 130 can be electrically connected to the terminal portions 122 of two adjacent battery cell assemblies 120. For example, the busbar 130 can be electrically connected to the terminal portions 122 of two battery cell assemblies 120 that are spaced apart from each other, and a crossbeam 117 is inserted between the two battery cell assemblies 120. The busbar 130 is covered by a busbar cover 140 and can be connected to the battery pack 100.

[0120] In this specification, the manifold cover 140 is shown by way of example, including reference numerals. Figures 1 to 5The description refers to the case of the lower cover 140B, but it goes without saying that references may also be included. Figures 6 to 8 The lower cover is described as 140B1, 140B2, and 140B3. Additionally, refer to... Figure 9 The described busbar cover 140' can also cover busbar 130.

[0121] Specifically, refer to together Figures 1 to 5 The fastening member 150 is fastened to the fastening hole 133 of the busbar 130 to connect the busbar 130 to the terminal portion 122 of the battery cell assembly 120. The fastening member 150 can pass sequentially through the fastening hole 133 of the busbar 130 and the hole 140H provided in the lower cover 140B to connect the busbar 130 to the terminal portion 122 of the battery cell assembly 120. The upper cover 140T can be connected to the lower cover 140B to cover the busbar 130. With the busbar 130 and the busbar cover 140 connected to the battery cell assembly 120, the hole 140H can expose at least a portion of the terminal portion 122.

[0122] The busbar cover 140 may include a first support portion 141 and a second support portion 142. The first support portion 141 and the second support portion 142 may protrude from the lower cover 140B. The first support portion 141 and the second support portion 142 may protrude from the lower cover 140B to reach the lifting portions 123 of two battery cell assemblies 120, which are spaced apart from each other, and a crossbeam 117 is inserted between the two battery cell assemblies 120. The first support portion 141 and the second support portion 142 may be spaced apart from each other in a first direction D1, and the crossbeam 117 is inserted between them. The first support portion 141 and the second support portion 142 may contact the lifting portion 123. For example, the bottom portions 141_B and 142_B of each of the first support portion 141 and the second support portion 142 may contact the lifting portion 123.

[0123] When the hole 140H provided in the lower cover 140B extends to at least a portion of the first support portion 141 and the second support portion 142, as shown in reference Figures 1 to 5 As described, the hole 140H can further expose at least a portion of the lifting portion 123. For example, the bottom portions 141_B, 142_B of each of the first support portion 141 and the second support portion 142 may include portions that expose at least a portion of the lifting portion 123. The manifold cover 140 can be secured to the lifting portion 123 through the hole 140H. For example, the hole 140H can be used to pass through a fixing member that secures the manifold cover 140 to the lifting portion 123.

[0124] In other embodiments, when the busbar cover 140 includes a reference Figure 6When describing the lower cover 140B1, the first hole 140H1 of the lower cover 140B1 can expose at least a portion of the terminal portion 122, and the second hole 140H2 can expose at least a portion of the lifting portion 123. For example, the second hole 140H2 can be provided at the bottom portions 141_B, 142_B of each of the first support portion 141 and the second support portion 142.

[0125] In other embodiments, when the busbar cover 140 includes a reference Figure 7 When describing the lower cover 140B2, the first hole 140H1 of the lower cover 140B1 can expose at least a portion of the terminal portion 122, but can not expose the lifting portion 123.

[0126] In other embodiments, when the busbar cover 140 includes a reference Figure 8 When describing the lower cover 140B3, the third hole 140H3 of the lower cover 140B3 can expose at least a portion of the terminal portion 122, and can further expose at least a portion of the lifting portion 123. At this time, the third hole 140H3 can be spaced apart from the lifting portion 123 in the third direction D3.

[0127] Reference Figures 10 to 12 The described battery pack 100 may include a busbar cover 140 that covers the busbar 130 and includes a fire-resistant material on its inner surface. Therefore, even if a fire occurs within the battery pack 100 or heat is generated due to charging and discharging, the busbar cover 140 will not deform and can protect the busbar 130.

[0128] Furthermore, the busbar cover 140 includes a support portion 140S, which supports the busbar 130. The support portion 140S is fixed to the lifting portion 123, ensuring that the busbar 130 will not shift or separate even in the event of a fire or other incident within the battery pack 100. Additionally, a hole 140H provided in the lower cover 140B of the busbar cover 140 allows heat generated from the busbar 130 to be released. This improves the performance and reliability of the battery pack 100 and enhances safety.

[0129] According to embodiments based on the technical concept of this disclosure, a battery pack 100 with improved performance and reliability can be provided.

[0130] According to embodiments based on the technical concept of this disclosure, a battery pack 100 with improved safety can be provided.

[0131] The present disclosure has been described in more detail above with reference to the accompanying drawings and embodiments. However, it should be understood that the configurations shown in the drawings or the embodiments described herein are merely one embodiment of the present disclosure and do not represent all the technical ideas of the present disclosure, and various equivalents and modifications may exist at the time of filing this application.

Claims

1. A manifold cover, the manifold cover comprising: Lower cover, which accommodates the busbar; The upper cover is connected to the lower cover and covers the manifold; as well as A fire-resistant coating layer is provided on the inner surface of the lower cover, wherein... The manifold is disposed on the mounting surface of the lower cover, and The mounting surface includes a first hole that exposes at least a portion of the contact portion of the busbar.

2. The manifold cover according to claim 1, wherein, The refractory coating includes ceramic materials.

3. The manifold cover according to claim 1, wherein the manifold cover further comprises: A fire-resistant coating layer on the inner surface of the top cover.

4. The manifold cover according to claim 1, wherein, The lower cover includes a support portion that protrudes in a direction opposite to that toward the upper cover, and The support portion overlaps with the main body portion of the busbar.

5. The manifold cover according to claim 4, wherein, The support includes a bottom portion that has the greatest distance from the upper cover, and The bottom portion includes a second hole.

6. The manifold cover according to claim 4, wherein, The first hole extends to at least a portion of the support.

7. The manifold cover according to claim 6, wherein, The support includes a bottom portion that has the greatest distance from the upper cover, and The first hole extends to the bottom portion of the support.

8. A battery pack, the battery pack comprising: A battery pack housing, the battery pack housing including a crossbeam; A first battery cell assembly and a second battery cell assembly are housed in the battery pack housing and spaced apart from each other in a first direction with the crossbeam inserted between the first battery cell assembly and the second battery cell assembly. A busbar, which electrically connects the first battery cell assembly and the second battery cell assembly and extends along the first direction; as well as A manifold cover, the manifold cover covering the manifold, wherein, Each of the first battery cell assembly and the second battery cell assembly includes a terminal portion connected to the busbar. The manifold cover includes: a lower cover that accommodates the manifold; and an upper cover that is connected to the lower cover and covers the manifold, wherein... The lower cover includes a first hole that exposes at least a portion of the terminal portion.

9. The battery pack according to claim 8, wherein, The first hole is penetrated by a fastening member that connects the busbar to the terminal portion.

10. The battery pack according to claim 8, wherein, Each of the first battery cell assembly and the second battery cell assembly further includes a lifting section, and The lower cover includes a first support portion and a second support portion, which protrude to reach the lifting portions of the first battery cell assembly and the second battery cell assembly, respectively.

11. The battery pack according to claim 10, wherein, The first support portion and the second support portion are spaced apart from each other, and the crossbeam is inserted between the first support portion and the second support portion.

12. The battery pack according to claim 10, wherein, The first support portion includes a bottom portion that contacts the lifting portion, and The bottom portion of the first support includes a second hole that exposes at least a portion of the lifting portion.

13. The battery pack according to claim 10, wherein, The first support portion includes a bottom portion that contacts the lifting portion, and The first hole extends to the bottom portion of the support.

14. The battery pack according to claim 8, further comprising: A fire-resistant coating layer, wherein the fire-resistant coating layer is on the inner surface of each of the lower cover and the upper cover, wherein, The refractory coating layer comprises ceramic inorganic materials.

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