Interconnection bus bar, battery pack case including same, battery pack including same, and method of manufacturing same

Abstract

The present invention relates to an interconnection bus bar, a battery pack case including the same, a battery pack including the same, and a method of manufacturing the same, the interconnection bus bar comprising: a conductive member electrically connected to a module terminal provided at a battery module; an insulating unit surrounding a region remaining after excluding a region where the conductive member is in contact with the module terminal; and a housing into which the insulating unit is inserted.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2024-0033066, filed on March 8, 2024, the disclosure of which is incorporated herein by reference in its entirety.

[0002] The present invention relates to an interconnecting busbar, a battery housing including the interconnecting busbar, a battery pack including the battery housing, and a method for manufacturing the same, and more specifically, to an interconnecting busbar that can be connected to a battery housing, a battery housing including the interconnecting busbar, a battery pack including the battery housing, and a method for manufacturing the same. Background Technology

[0003] With the technological advancements in mobile devices and the increasing demand for them, rechargeable and dischargeable batteries have been adopted as an energy source for various mobile devices. Rechargeable batteries have also attracted attention as an energy source for electric vehicles and hybrid electric vehicles, which are emerging as alternatives to existing gasoline and diesel vehicles that use fossil fuels.

[0004] Based on the shape of the battery casing, secondary batteries are classified into cylindrical batteries with electrode assemblies installed in cylindrical metal cans, square batteries with electrode assemblies installed in square metal cans, and pouch batteries with electrode assemblies installed in pouch-shaped casings made of aluminum laminates.

[0005] Lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries are currently the most widely used rechargeable batteries. The operating voltage of a single rechargeable battery cell (i.e., a single battery cell) is approximately 2.0V to 5.0V. Therefore, when an output voltage higher than the above operating voltage is required, multiple battery cells can be connected in series to form a cell module assembly. Furthermore, cell module assemblies can be connected in series or parallel to form a battery module according to the required output voltage or charge and discharge capacity, and battery packs are typically manufactured using at least one battery module with the addition of additional components.

[0006] However, lithium-ion batteries are at risk of explosion due to overheating, making ensuring their safety a major challenge. Overheating can occur for various reasons, one of which is overcurrent flowing within the lithium-ion battery. Overcurrent causes the internal temperature of the battery to rise rapidly due to heat generation, and this rapid temperature rise leads to thermal runaway, which can result in an explosion.

[0007] Figure 1 This is a schematic diagram of a battery pack with conventional busbars applied to it. (Example) Figure 1As shown, the battery pack can be configured such that a battery module M comprising multiple battery cells 1 is connected to the external terminal 3 of another adjacent battery module M via an interconnecting busbar 4.

[0008] In this case, there is a problem that the remaining portion of the interconnecting bus 4 (excluding the area of ​​the interconnecting bus that contacts the external terminal 3) is exposed to emissions generated during thermal runaway, which increases the probability of internal short circuits occurring.

[0009] (Existing technical literature)

[0010] (Patent Document 1) Korean Patent Application Publication No. 10-2015-0028073 Summary of the Invention

[0011] Technical issues

[0012] In view of the above problems, the present invention has been made, and the object of the present invention is to provide an interconnecting busbar, a battery pack housing including the interconnecting busbar, a battery pack including the battery pack housing, and a method of manufacturing the same, wherein the interconnecting busbar is configured such that the remaining area of ​​the interconnecting busbar, except for the area where the interconnecting busbar contacts the external terminals of the battery module, is not exposed to emissions, thereby reducing the possibility of internal short circuits.

[0013] Technical solution

[0014] As a technical means to achieve the above-mentioned objectives, the interconnecting busbar according to an embodiment of the present invention includes: a conductive member (110) electrically connected to a module terminal (310) disposed at a battery module (300); an insulating portion (120) configured to surround the remaining area of ​​the conductive member (110) excluding the area where the conductive member contacts the module terminal (310); and a housing (130) configured to allow the insulating portion (120) to be inserted into the housing.

[0015] Furthermore, in the interconnecting busbar according to an embodiment of the present invention, the conductive member (110) may be formed in the shape of a straight rod.

[0016] Furthermore, in the interconnect busbar according to an embodiment of the present invention, the housing (130) may be provided with a through hole (131) which is formed to allow the conductive member (110) and the insulating portion (120) to pass through the through hole.

[0017] Furthermore, in the interconnect busbar according to an embodiment of the present invention, the conductive member (110) may be made of a conductive material including a metallic material.

[0018] Furthermore, in the interconnecting busbar according to an embodiment of the present invention, insulating material (111) may be coated onto the remaining area of ​​the outer surface of the conductive member (110).

[0019] Furthermore, in the interconnecting busbar according to an embodiment of the present invention, the insulating portion (120) may be made of an electrically insulating material.

[0020] Furthermore, according to an embodiment of the present invention, a battery pack housing including the interconnecting busbar includes: an outer frame (210); a grid-like partition wall (220) disposed in the outer frame (210), the grid-like partition wall being configured to form a plurality of receiving recesses (230), each receiving recess being configured to receive a battery module (300); and an interconnecting busbar (100) disposed on the partition wall (220).

[0021] Furthermore, in the battery pack housing according to an embodiment of the present invention, the partition wall (220) may include: a first partition wall (221) disposed in a first direction parallel to the axial direction, wherein the module terminal (310) of the battery module (300) is disposed in the axial direction; and a second partition wall (222) disposed in a second direction perpendicular to the first direction.

[0022] Furthermore, in the battery pack housing according to an embodiment of the present invention, the first partition wall (221) may be provided with a first mounting recess (221a), which is configured to allow interconnecting busbars (100) to be mounted therein, and the first mounting recess (221a) may be formed in the first partition wall (221) in a second direction.

[0023] Furthermore, in the battery pack housing according to an embodiment of the present invention, the second partition wall (222) may be provided with a second mounting recess (222a), the second mounting recess (222a) being configured to allow interconnecting busbars (100) to be mounted therein, and the second mounting recess (222a) may be formed in the second partition wall (222) in a first direction.

[0024] Furthermore, according to an embodiment of the present invention, a battery pack including a battery pack housing includes: a battery pack housing (200), the battery pack housing (200) including interconnecting busbars (100), an outer frame (210) and a partition wall (220) and a plurality of battery modules (300), each of the battery modules having a module terminal (310).

[0025] Furthermore, in the battery pack according to an embodiment of the present invention, an interconnecting busbar (100) may be disposed in a first mounting recess (221a) so as to electrically connect the module terminals (310) of adjacent battery modules (300) in a second direction.

[0026] Furthermore, in the battery pack according to an embodiment of the present invention, an interconnecting busbar (100) may be disposed in a second mounting recess (222a) so as to electrically connect the module terminals (310) of adjacent battery modules (300) in a first direction.

[0027] Furthermore, the method for manufacturing a battery pack according to an embodiment of the present invention includes the following steps: (S1) housing a plurality of battery modules (300) in a plurality of housing recesses (230); (S2) placing a plurality of interconnecting busbars (100) in a first housing recess (221a) and / or a second housing recess (222a) to connect module terminals (310) disposed at adjacent battery modules (300); and (S3) making the module terminals (310) electrically contacting a conductive member (110).

[0028] Furthermore, the method for manufacturing a battery pack according to an embodiment of the present invention may also include adding an insulating material to the upper surface of the conductive member (110) after step (S3).

[0029] Beneficial effects

[0030] As is evident from the above description, in the interconnecting busbar according to the invention, the battery pack housing including the interconnecting busbar, the battery pack including the battery pack housing, and the method of manufacturing the same, the interconnecting busbar (excluding the portion of the interconnecting busbar electrically connected to the module terminals disposed at the battery module) is wound with an insulating member, thereby preventing internal short circuits even if emissions generated during thermal runaway of the battery cell are scattered and accumulate on the interconnecting busbar.

[0031] Furthermore, in the interconnecting busbar, the battery pack housing including the interconnecting busbar, the battery pack including the battery pack housing, and the manufacturing method thereof according to the present invention, the recesses therein where the interconnecting busbar is disposed are formed in the partition wall of the battery pack housing, thereby simplifying the method of manufacturing the battery pack. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a battery pack with conventional busbars applied to it.

[0033] Figure 2 This is a perspective view of an interconnecting busbar according to an embodiment of the present invention.

[0034] Figure 3 This is an exploded perspective view of an interconnecting busbar according to an embodiment of the present invention.

[0035] Figure 4 This is a conceptual diagram of a battery pack including a battery pack housing according to an embodiment of the present invention.

[0036] Figure 5 This is a view showing an interconnecting busbar according to an embodiment of the present invention seated on the first partition wall of the battery pack.

[0037] Figure 6 This is a view showing the state in which the interconnecting busbar according to an embodiment of the present invention is seated on the first partition wall of the battery pack.

[0038] Figure 7 This is a view showing an interconnecting busbar according to an embodiment of the present invention sitting on the second partition wall of the battery pack.

[0039] Figure 8 This is a view showing the state in which the interconnecting busbar according to an embodiment of the present invention is seated on the second partition wall of the battery pack. Detailed Implementation

[0040] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that these preferred embodiments can be readily implemented by those skilled in the art. However, in describing the operating principles of the preferred embodiments of the present invention, detailed descriptions of known functions and configurations incorporated herein may obscure the subject matter of the invention, and such detailed descriptions will be omitted.

[0041] Furthermore, the same reference numerals will be used throughout the accompanying drawings to refer to parts that perform similar functions or operations. Throughout the specification, where a part is referred to as being connected to another part, this means not only that one part can be directly connected to another part, but also that one part can be indirectly connected to another part via other parts. Moreover, including a predetermined element does not imply the exclusion of other elements, but rather means that such elements may be further included, unless otherwise specified.

[0042] The interconnecting busbar according to the present invention will be described below.

[0043] Figure 2 This is a perspective view of an interconnecting busbar according to an embodiment of the present invention. Figure 3 This is an exploded perspective view of an interconnecting busbar according to an embodiment of the present invention, and Figure 4 This is a conceptual diagram of a battery pack including a battery pack housing according to an embodiment of the present invention.

[0044] Reference Figures 2 to 4 The interconnecting busbar 100 includes a conductive member 110, an insulating part 120, and a housing 130.

[0045] First, the conductive member 110 can be configured to be electrically connected to the module terminal 310 disposed at the battery module 300. For example, both ends of the conductive member 110 can contact the module terminal 310, thereby allowing the conductive member 110 to be electrically connected to the module terminal 310.

[0046] The conductive member 110 may be made of a conductive material including metallic materials. For example, the conductive member 110 may be made of a metal plate. More specifically, the conductive member 110 may be made of copper, aluminum, nickel, gold, silver, or a combination thereof.

[0047] Additionally, insulating material 111 can be applied to the remaining area of ​​the outer surface of the conductive member 110, excluding the two ends, which are the areas that contact the module terminals 310.

[0048] The insulating material 111 can be an external insulating material that forms a component of the interconnecting busbars and can prevent electrification during subsequent battery pack manufacturing. For example, the insulating material 111 can be at least one of polybutylene terephthalate (PBT), plastic, inorganic oxide, or non-conductive metal.

[0049] The conductive member 110 can be formed in the shape of a straight strip. Therefore, the interconnecting busbar 100 can electrically connect the module terminals 310 of adjacent battery modules 300.

[0050] The insulating portion 120 can be configured to surround the remaining area of ​​the conductive member 110, excluding the area that contacts the module terminal 310. That is, the insulating portion 120 can be configured to surround the area of ​​the conductive member 110 coated with insulating material 111.

[0051] The insulating part 120 may be made of an electrically insulating material. For example, the insulating part may be made of at least one of plastic, inorganic oxide, and non-conductive metal.

[0052] Additionally, the insulating portion 120 may have an insertion hole 121 in which a conductive member 110 is inserted and formed, and the conductive member 110 may be inserted into the insertion hole 121 to minimize the area exposed to emissions.

[0053] The insulating portion 120 can be configured to surround the outer surface of the conductive member 110, excluding the two ends of the conductive member 110, thereby reducing the probability of the conductive member 110 coming into contact with spark particles compared to the prior art.

[0054] The housing 130 can be configured to allow the insulating portion 120 to be inserted therein. The housing 130 may be provided with a through hole 131 through which the conductive member 110 and the insulating portion 120 are inserted, such that the conductive member 110 inserted into the insertion hole 121 of the insulating portion 120 can be inserted through the through hole 131 and connected to the housing 130.

[0055] For example, the through hole 131 can be formed such that the conductive member 110 and the insulating portion 120 extend through the center of the side surface of the housing 130.

[0056] Alternatively, the housing 130 may be made of the same material as the partition wall 220 described later, or of an injection-molded material represented by heat-resistant plastic.

[0057] The following will describe a battery pack housing and a battery pack including interconnecting busbars according to the present invention.

[0058] Figure 5 This is a view showing an interconnecting busbar according to an embodiment of the present invention seated on a first partition wall of a battery pack, and Figure 6 This is a view showing the state in which the interconnecting busbar according to an embodiment of the present invention is positioned on the first partition wall of the battery pack. Furthermore, Figure 7 This is a view showing an interconnecting busbar according to an embodiment of the present invention seated on a second partition wall of a battery pack, and Figure 8 This is a view showing the state in which the interconnecting busbar according to an embodiment of the present invention is positioned on the second partition wall of the battery pack.

[0059] Reference Figures 2 to 8 The battery pack housing 200 includes an outer frame 210, a partition wall 220, and interconnecting busbars 100. Furthermore, the battery pack housing 200 may include an upper housing (not shown) and a lower housing (not shown).

[0060] First, the outer frame 210 may have a hollow space formed therein, and multiple battery modules 300 and partition walls 220 may be housed in the hollow space. For example, when connected to an upper housing (not shown) and a lower housing (not shown), the outer frame 210 may be constructed in the form of a box.

[0061] The partition wall 220 may include a first partition wall 221 and a second partition wall 222. The partition wall 220 may be disposed in the outer frame 210 and may be arranged in a grid pattern to form a plurality of storage recesses 230 configured to house the battery module 300.

[0062] The first partition wall 221 can be set parallel to the axial direction ( Figure 4In the first direction (from 12 o'clock to 6 o'clock), the module terminal 310 of the battery module 300 is disposed in this axial direction. Furthermore, the second partition wall 222 may be disposed in a second direction perpendicular to the first direction.

[0063] For example, the second partition wall 222 may be disposed in the middle of the outer frame 210 in the first direction, and the first partition wall 221 may be configured to be spaced apart from the outer frame 210 so as to correspond to the total width of the battery module 300.

[0064] The distance between the outer frame 210 and the second partition wall 222 corresponds to the total length of the battery module 300, and the distance between the outer frame 210 and the first partition wall 221 or between the first partition wall 221 and the second partition wall 222 can correspond to the total width of the battery module 300.

[0065] When the first partition wall 221 and the second partition wall 222 are configured as described above, the outer frame 210 and the partition wall 220 can form a plurality of receiving recesses 230 configured to receive the battery module 300. The size of each of the plurality of receiving recesses 230 can correspond to the size of the battery module 300.

[0066] Meanwhile, the interconnecting busbar 100 can be mounted on the partition wall 220.

[0067] First refer to Figure 5 and Figure 6 The first mounting recess 221a may be formed in the first partition wall 221, and the interconnecting busbar 100 may be mounted in the first mounting recess 221a.

[0068] More specifically, the first mounting recess 221a may be formed in the first partition wall 221 in a shape that cuts off a portion of the first partition wall along a second direction from the middle of the first partition wall through which the second partition wall 222 traverses. Of course, the first mounting recess 221a may not be formed by actually cutting off a portion of the first partition wall 221, but rather by shaping the first partition wall 221 in a shape in which the first mounting recess 221a is formed during the manufacture of the first partition wall.

[0069] The first mounting recess 221a can be formed at a position corresponding to the position where the module terminals 310 of the battery module 300 housed in the plurality of storage recesses 230 are disposed.

[0070] The interconnecting busbar 100 may have a shape corresponding to the shape of the first mounting recess 221a, and the first mounting recess 221a of the first partition wall 221 and the housing 130 of the interconnecting busbar 100 may match each other.

[0071] Furthermore, for example, the interconnecting busbar 100 may have a protrusion (not shown) projecting downward from its lower surface for connection to the partition wall 220, and the first mounting recess 221a may have a connection recess (not shown) configured to connect to the protrusion (not shown).

[0072] In addition, refer to Figure 7 and Figure 8 The second mounting recess 222a may be formed in the second partition wall 222, and the interconnecting busbar 100 may be mounted in the second mounting recess 222a.

[0073] More specifically, the second mounting recess 222a may be formed on the side of the second partition wall 222 that contacts the outer frame 210 or on the other side of the second partition wall, in a shape in which a portion of the second partition wall is cut off along the first direction. Of course, the second mounting recess 222a may not be formed by actually cutting off a portion of the second partition wall 222, but rather by shaping the second partition wall 222 in the shape in which the second mounting recess 222a is formed during the manufacture of the second partition wall.

[0074] The second mounting recess 222a can be formed at a position corresponding to the position where the module terminals 310 of the battery module 300 housed in the plurality of housing recesses 230 are located.

[0075] The interconnecting busbar 100 may have a shape corresponding to the shape of the second mounting recess 222a, and the second mounting recess 222a of the second partition wall 222 and the housing 130 of the interconnecting busbar 100 may match each other.

[0076] Furthermore, for example, the interconnecting busbar 100 may have a protrusion (not shown) on its lower surface, and the second mounting recess 222a may have a connecting recess (not shown) configured to connect to the protrusion (not shown).

[0077] Reference Figures 4 to 8 The first partition wall 221 and the second partition wall 222 can be inserted between the battery modules 300 and can be configured in shape and material to block or reduce the transfer of heat and / or flame between the battery modules 300. For example, each of the first partition wall 221 and the second partition wall 222 can be made of a material including aluminum.

[0078] Furthermore, the housing 130 of the interconnecting busbar 100 disposed on the first partition wall 221 and the second partition wall 222 may also be configured in a shape and material capable of blocking or reducing the transfer of heat and / or flame between the battery modules 300.

[0079] The interconnecting busbar 100 can be mounted on the first partition wall 221 or the second partition wall 222 to prevent heat transfer between different battery modules 300 while electrically connecting adjacent battery modules 300 to each other.

[0080] At the same time, refer to Figures 2 to 8 According to an embodiment of the present invention, the battery pack includes a battery pack housing 200 and a battery module 300.

[0081] As described above, the battery pack housing 200 includes interconnecting busbars 100, an outer frame 210, and partition walls 220. The battery pack housing 200 including the interconnecting busbars 100 is the same as described above, so a more detailed description thereof will be omitted.

[0082] The battery module 300 may include a cell assembly (not shown), a module housing (not shown), and module terminals 310.

[0083] First, the cell assembly (not shown) may include multiple battery cells. Each battery cell may be a pouch-type secondary battery, comprising an electrode assembly, electrode leads, and a battery casing.

[0084] The electrode assembly can be a wound electrode assembly, configured to have a structure in which an elongated negative electrode and an elongated positive electrode are wound with a separator inserted therebetween; a stacked electrode assembly, comprising unit cells, each unit cell being configured to have a structure in which a rectangular positive electrode and a rectangular negative electrode are stacked with a separator inserted therebetween; a stacked and folded electrode assembly, configured to have a structure in which a unit cell is wound with a long separation membrane; or a laminated and stacked electrode assembly, configured to have a structure in which unit cells are stacked with a separator inserted therebetween and then attached to each other; however, the invention is not limited thereto.

[0085] The positive electrode comprises a positive current collector and a positive active material coated on the upper and lower surfaces of the positive current collector. The positive active material may be mixed with conductive agents and binders, and fillers may be further added as needed.

[0086] The negative electrode includes a negative electrode current collector and a negative electrode active material coated on each of the upper and lower surfaces of the negative electrode current collector. The negative electrode active material may be further mixed with a conductive agent and a binder, and the negative electrode current collector may be coated with the mixture.

[0087] The diaphragm prevents short circuits between the negative and positive electrodes and allows only lithium ion migration. Preferably, the diaphragm is made of any one selected from polyethylene, polypropylene, double-layer polyethylene / polypropylene, triple-layer polyethylene / polypropylene / polyethylene, triple-layer polypropylene / polypropylene / polypropylene, and organic fiber filter paper; however, the invention is not limited thereto.

[0088] The battery housing for housing the electrode assembly is made of a laminate comprising an outer cover layer, a metal layer and an inner cover layer, and has a housing portion formed therein.

[0089] The inner cover layer is in direct contact with the electrode assembly, therefore it must exhibit high insulation performance and high electrolytic resistance. Furthermore, the inner cover layer must exhibit high sealing performance to hermetically isolate the battery casing from the outside; that is, the thermally bonded seals between the inner layers must exhibit excellent thermal bonding strength.

[0090] The inner cover can be made of a material selected from polyolefin-based resins (such as polypropylene, polyethylene, polyethylene acrylic or polybutene), polyurethane resins and polyimide resins, which exhibit excellent chemical resistance and high sealing performance; however, the invention is not limited thereto, and polypropylene, which exhibits excellent mechanical properties (such as tensile strength, stiffness, surface hardness and impact resistance) and excellent chemical resistance, is the most preferred material.

[0091] The metal layer adjacent to the inner cover layer corresponds to a barrier layer configured to prevent moisture or various gases from penetrating into the battery from the outside. Lightweight and easily formed aluminum films are preferred materials for the metal layer.

[0092] An outer cover layer is disposed on the other surface of the metal layer, and the outer cover layer can be made of a heat-resistant polymer exhibiting excellent tensile strength, resistance to moisture penetration, and resistance to air permeability, so that the outer cover layer exhibits high heat resistance and chemical resistance while protecting the electrode assembly. As an example, the outer cover layer can be made of nylon or polyethylene terephthalate; however, the invention is not limited thereto.

[0093] In addition, the module housing (not shown) can house the battery cell assembly (not shown) within its internal space.

[0094] The battery module 300 according to the present invention is not particularly limited in shape or configuration, and various battery modules 300 can be provided.

[0095] The battery module 300 includes module terminals 310 and can be configured as multiple battery modules 300. The multiple battery modules 300 can be respectively housed in multiple receiving recesses 230 of the battery pack housing 200.

[0096] At this time, the multiple battery modules 300 can be configured such that the module terminals 310 face the second partition wall 222.

[0097] Reference Figure 5 and Figure 6 In the second direction, the module terminals 310 of the battery modules 300 that are adjacent to each other can be placed in the first placement recess 221a of the interconnecting bus bar 100 so as to be electrically connected to each other.

[0098] In addition, refer to Figure 7 and Figure 8 In the first direction, the module terminals 310 of the battery modules 300 that are adjacent to each other can be placed in the second placement recess 222a of the interconnecting bus bar 100 so as to be electrically connected to each other.

[0099] Next, we will refer to Figures 2 to 8 A method for manufacturing a battery pack according to an embodiment of the present invention is described.

[0100] The method for manufacturing a battery pack according to the present invention includes the following steps: (S1) receiving a plurality of battery modules 300 in a plurality of receiving recesses 230; (S2) placing a plurality of interconnecting busbars 100 in a first receiving recess 221a and / or a second receiving recess 222a to connect module terminals 310 disposed at adjacent battery modules 300; and (S3) making the module terminals 310 electrically contacting a conductive member 110.

[0101] In step (S2), the interconnecting busbar 100 may be disposed in the first mounting recess 221a to electrically connect the module terminals 310 of adjacent battery modules 300 in the second direction. Furthermore, in step (S2), the interconnecting busbar 100 may be disposed in the second mounting recess 222a to electrically connect the module terminals 310 of adjacent battery modules 300 in the first direction.

[0102] In step (S3), the conductive member 110 can make electrical contact with the module terminals 310 disposed at adjacent battery modules 300, thereby allowing the adjacent battery modules 300 to be electrically connected to each other.

[0103] Furthermore, the method for manufacturing a battery pack according to the present invention may include the following step: after step (S3), adding an insulating material to the upper surface of the conductive member 110. Here, the insulating material may be heat-resistant silicone or insulating tape.

[0104] For example, insulating material can be added to the surface of the conductive member 110 opposite to the surface that is in electrical contact with the module terminal 310 to ensure contact between the conductive member 110 and the module terminal 310. Furthermore, insulating material can be added to the surface of the conductive member 110 opposite to the surface that is in electrical contact with the module terminal 310 to prevent the remainder of the conductive member 110, except for the surface in contact with the module terminal 310, from being exposed to emissions.

[0105] In the method of manufacturing a battery pack according to the present invention, the interconnecting busbar 100 is disposed in a first placement recess 221a or a second placement recess 222a, such that the conductive member 110 is electrically connected to the module terminal 310 disposed at adjacent battery modules 300, thereby enabling a simpler process than the conventional method of fastening the interconnecting busbar to the module terminal using bolts.

[0106] Although the specific details of the invention have been described in detail, those skilled in the art will understand that the detailed description only discloses preferred embodiments of the invention and therefore does not limit the scope of the invention. Therefore, those skilled in the art will understand that various changes and modifications are possible without departing from the scope and concept of the invention, and it will be apparent that such changes and modifications fall within the scope of the appended claims.

[0107] (Description of reference numerals in the attached diagram)

[0108] 100: Interconnect busbar

[0109] 110: Conductive component; 111: Insulating material

[0110] 120: Insulation part; 121: Insertion hole

[0111] 130: Housing 131: Through hole

[0112] 200: Battery pack casing

[0113] 210: Outer frame

[0114] 220: Partition wall

[0115] 221: First partition wall 221a: First placement recess

[0116] 222: Second partition wall 222a: Second placement recess

[0117] 230: Storage recess

[0118] 300: Battery Module

[0119] 310: Module terminal

Claims

1. An interconnect bus, the interconnect bus comprising: A conductive component, wherein the conductive component is electrically connected to a module terminal disposed at the battery module; An insulating portion, the insulating portion being configured to surround the remaining area of ​​the conductive member other than the area where the conductive member contacts the module terminal; as well as A housing, the housing being configured to allow the insulating portion to be inserted into the housing.

2. The interconnecting busbar according to claim 1, wherein, The conductive component is formed in the shape of a straight rod.

3. The interconnecting busbar according to claim 1, wherein, The housing is provided with a through hole, which is formed to allow the conductive member and the insulating part to pass through the through hole.

4. The interconnecting bus bar according to claim 1, wherein, The conductive component is made of a conductive material including metallic materials.

5. The interconnecting busbar according to claim 4, wherein, Insulating material is coated onto the remaining area of ​​the outer surface of the conductive member.

6. The interconnecting bus bar according to claim 1, wherein, The insulating part is made of an electrically insulating material.

7. A battery pack housing, the battery pack housing comprising an interconnecting busbar according to any one of claims 1 to 6, the battery pack housing comprising: outer frame; A grid-like partition wall is disposed in the outer frame and is configured to form a plurality of storage recesses, each of which is configured to store the battery module. as well as Interconnecting busbars are mounted on the partition wall.

8. The battery pack housing according to claim 7, wherein, The partition wall includes: A first partition wall is disposed in a first direction parallel to the axial direction of the module terminals on which the battery module is disposed; and The second partition wall is disposed in a second direction perpendicular to the first direction.

9. The battery pack housing according to claim 8, wherein, The first partition wall is provided with a first mounting recess, which is configured to allow the interconnecting busbar to be mounted in the first mounting recess, and The first placement recess is formed in the first partition wall in the second direction.

10. The battery pack housing according to claim 8, wherein, The second partition wall is provided with a second mounting recess, which is configured to allow the interconnecting busbar to be mounted in the second mounting recess, and The second placement recess is formed in the second partition wall in the first direction.

11. A battery pack, the battery pack comprising a battery pack housing according to any one of claims 7 to 10, wherein... The battery pack housing includes the interconnecting busbars, the outer frame, and the partition wall; and Multiple battery modules, each of which has the module terminals.

12. The battery pack according to claim 11, wherein, The interconnecting busbar is disposed in the first placement recess so as to electrically connect the module terminals of adjacent battery modules in a second direction.

13. The battery pack according to claim 11, wherein, The interconnecting busbar is disposed in the second mounting recess to electrically connect the module terminals of adjacent battery modules in a first direction.

14. A method for manufacturing a battery pack according to any one of claims 11 to 13, the method comprising the following steps: (S1) The plurality of battery modules are housed in the plurality of housing recesses; (S2) A plurality of interconnecting busbars are disposed in the first and / or the second placement recess to connect the module terminals located at adjacent battery modules; as well as (S3) Make the module terminals electrically contact the conductive component.

15. The method of claim 14, further comprising adding an insulating material to the upper surface of the conductive member after step (S3).

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