Battery pack with improved energy density through improved busbar sensing wire bonding

Abstract

The present invention relates to a battery pack in which an ICB (Inter Connected Board) is integrated with a BMS (Battery management system), and in which, when sensing wire bonding of the ICB connected to bus bars of a plurality of battery cells is performed, the energy density of the battery pack is improved by improving sensing wire bonding of the bus bar within the space of the battery pack combined with the ICB-integrated BMS.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0122810, filed September 27, 2022, and all contents disclosed in the Korean Patent Application are incorporated herein by reference.

[0002] The present invention relates to a battery pack having improved energy density by improving a sensing wire bonding structure of a bus bar, and more particularly to a battery pack in which an ICB (Inter Connected Board) is integrated with a BMS (Battery Management System), and in which, when sensing wire bonding of the ICB connected to bus bars of a plurality of battery cells, the energy density is improved by improving the sensing wire bonding of the bus bar within the space of the battery pack combined with the ICB-integrated BMS. [Background technology]

[0003] Recently, the demand for secondary batteries that can store electrical energy produced by the development of alternative energy sources due to air pollution caused by the use of fossil fuels and energy depletion has increased. Rechargeable secondary batteries are widely used in everyday life, such as in mobile devices, electric vehicles, and hybrid electric vehicles.

[0004] Secondary batteries are used as energy sources for various electronic devices that are essential in modern society, and the required capacity is increasing due to the increasing use and complexity of mobile devices and the development of electric vehicles, etc. To meet user demands, small devices are equipped with multiple battery cells, while automobiles and the like use battery modules in which multiple battery cells are electrically connected, or battery packs equipped with multiple such battery modules.

[0005] As the types of devices that use lithium secondary batteries as an energy source are expanding, the application of lithium secondary batteries is expanding to devices that require high capacity and high output.

[0006] In response to this trend, there has been an increase in the manufacture and use of battery modules in which a number of battery cells are electrically connected, and battery packs in which the battery modules are connected in series and / or parallel.

[0007] Generally, in a secondary battery module, a slave-type BMS is applied to the module side to provide data on the voltage / temperature of each individual cell. For example, in the case of a secondary battery pack for an automobile, a master-type BMS is provided to a higher level such as a PCS or BMM to manage the overall functions of the secondary battery pack.

[0008] In addition, in the case of a secondary battery module for an energy storage system (ESS), a master type BMS is configured between individual modules to balance the individual modules for serial / parallel expandability between modules, and the data of each slave BMS is transmitted to the master BMS at the highest level using a daisy chain.

[0009] According to the conventional technology, there are various types of secondary battery modules, and the cartridges constituting the modules and the bus bars for sensing have different structures and positions, which makes it difficult to perform efficient connection work. In addition, the welding quality of the sensing structure is reduced, and unnecessary space in the secondary battery module must be reserved for work such as welding, which ultimately results in a reduced energy density of the secondary battery module.

[0010] Meanwhile, bus bars are widely used as an electrical connection means for the battery modules, and are useful as a large current carrying means because they can stably carry a large current even with a relatively small diameter compared to cables.

[0011] Generally, the bus bar is provided in the form of a metal bar made of copper or aluminum, which has good electrical conductivity, and for safety reasons, the remaining portion of the metal bar, except for both ends connected to the terminals, is covered with a tube or extrusion.

[0012] A sensing wire is connected to one end of the bus bar to sense information about the battery module through the bus bar, and an ICB (Inter Connected Board) is used to transmit the sensing information of the bus bar to the BMS.

[0013] Generally, the ICB is coupled to a BMS via a connector, and status information of the battery cells is provided via the bus bar.

[0014] Recently, the focus of technological development for secondary battery modules used in energy storage devices or power storage devices has been on maximizing the compactness of battery packs in order to increase energy efficiency or density.

[0015] In this regard, FIG. 1 is a diagram showing a connection between an ICB assembly and a bus bar, in which a conventional ICB is separately applied and fastened to a BMS via a data connector.

[0016] 1 and 11, the BMS is a separate structure from the battery pack accommodating the battery cells, and is connected to the ICB via the data connector 510. The electrical connection between the bus bars of the battery cells and the ICB is generally made via sensing wires. The connection between the ICB and the bus bars is made by wire bonding between metal pads for connection to the bus bars of the ICB. Here, the shape of the ICB assembly 500 connected to the bus bars can be formed relatively freely because it is restricted only by the battery pack.

[0017] That is, a battery pack using wire bonding is generally configured such that the sensing lines of each battery cell bank are connected to the ICB by wire bonding, and then the ICB data connector is fastened to the BMS. When a separate ICB board is used, there is some leeway in selecting the board width for the line wiring for sensing. However, due to the separate BMS configuration, the energy density of the battery pack is essentially lowered.

[0018] Therefore, if a BMS is configured with an integrated ICB, it can be combined into a battery pack to form a compact battery pack, but there is a problem in that the ICB and bus bar must be connected within the size of the battery pack.

[0019] In this regard, Patent Document 1 discloses a battery pack including a number of battery cells and a rigid PCB that extends across the number of battery cells and is electrically connected to each of the battery cells, and that includes a bus area for electrically connecting the number of battery cells to each other and a BMS area for controlling the charge / discharge operations of the battery cells.

[0020] Patent Document 1 is a technology related to a battery pack that can simplify the assembly process, and is similar to the present invention in that the bus area and the BMS area are located on the same common plane. However, it does not disclose the sensing wire of the ICB that connects the BMS and the bus bar, and the bus bar area tab and the BMS tab are not aligned in a straight line.

[0021] Patent Document 2 discloses a cartridge assembly in which at least two or more cartridges that house secondary battery cells are stacked and connected together, and a sensing housing that can be connected to or detached from the side of the cartridge assembly, and that has two or more bus bars that are arranged in a predetermined pattern and are electrically connected to the electrodes of the corresponding cells, and a BMS circuit board that can be connected to each bus bar, and that is integrally provided, and the BMS circuit board has a number of receptacle terminals that are provided to be inserted into each bus bar in a receptacle type.

[0022] Patent Document 2 is a technology related to a compact secondary battery module, and is similar to the present invention in that it includes an integrated BMS circuit board that can be connected to each bus bar, that the BMS circuit bus bars are electrically connected in a receptacle format, and that it discloses the position and structure of the receptacle terminals. However, it differs from the present invention in that it does not disclose the sensing wire of the ICB that connects the BMS and bus bar, and does not disclose the position of the electrode tabs of the bus bar.

[0023] Therefore, there is a need for a technology that combines an ICB and a bus bar, which can improve battery control by a BMS, and that increases the energy density of a battery pack by combining an ICB and a bus bar that are integrally combined with the BMS. [Prior art documents] [Patent documents]

[0024] [Patent Document 1] Korean Patent Publication No. 10-2020-0029918 [Patent Document 2] Korean Patent Registration No. 10-2115481 Summary of the Invention [Problem to be solved by the invention]

[0025] The present invention has been made to solve the above problems, and aims to provide a battery pack in which an ICB (Inter Connected Board) is integrated with a BMS (Battery Management System), and in which, when bonding sensing wires of the ICB connected to bus bars of a plurality of battery cells, the energy density is improved by improving the bonding of the sensing wires of the bus bars within the space of the battery pack combined with the ICB-integrated BMS. [Means for solving the problem]

[0026] To achieve this object, a battery pack according to the present invention may include a plurality of battery cells (100), a cell frame (200) that houses the battery cells, a cell frame cover (210) coupled to a first surface of the cell frame, a BMS (Battery management system) assembly (400) coupled to a second surface of the cell frame, a bus bar support (220) formed in a concave-convex shape on a first side of the cell frame cover, and a metal pad support (440) formed in a concave-convex shape on a first side of the BMS assembly, wherein the bus bar support and the metal pad support are alternately fitted together on the same surface.

[0027] In addition, the bus bar 300 located at the bus bar support portion and the metal pad 450 located at the metal pad support portion may be connected via a sensing wire 460 .

[0028] In addition, the busbar may be positioned on the busbar protrusion (221) of the busbar support part, the metal pad may be positioned on the metal pad protrusion (441) of the metal pad support part, the busbar may be fitted into the metal pad recess (442) of the metal pad support part, and the metal pad may be fitted into the busbar recess (222) of the busbar support part.

[0029] In addition, the BMS assembly may be formed by integrating an ICB (Interconnected Board) including metal pads with the BMS (420).

[0030] In addition, the bus bar may be coupled to the terminal of the battery cell on the first surface of the cell frame cover.

[0031] In addition, an end of the bus bar connected to the terminal of the battery cell may be positioned on the bus bar support portion.

[0032] The battery pack may also include a BMS cover (410) that covers the BMS assembly.

[0033] In addition, the BMS cover may expose the bus bar support portion and the metal pad support portion to the outside and may be coupled to the BMS assembly.

[0034] Also, one or more sensing wires may be formed.

[0035] The battery cells may be at least one of a cylindrical type, a prismatic type, and a pouch type.

[0036] In addition, guide bars 211 for coupling with the cell frame may be formed on both ends of the bus bar support portion.

[0037] Also, the length of the second side of the cell frame may be determined by the length of the second side of the BMS assembly.

[0038] Furthermore, the present invention can also be provided in the form of various combinations of means for solving the above problems. [Effects of the Invention]

[0039] As described above, the battery pack according to the present invention can be made compact by fitting the metal pad support portion of the ICB-integrated BMS assembly with the bus bar support portion formed on the cell frame cover of the battery pack.

[0040] According to another aspect of the present invention, an ICB is integrally formed on a BMS circuit board, eliminating the need for a separate data connector and facilitating the connection between the bus bar and the sensing unit.

[0041] In addition, since the BMS assembly can be fixed integrally to the battery pack, the voltage of the secondary battery cell can be sensed stably. [Brief explanation of the drawings]

[0042] [Figure 1] 1 is a perspective view of a connection portion between an ICB assembly and a bus bar of a battery pack in which a BMS is fastened by a conventional separate ICB. [Figure 2] FIG. 2 is a perspective view of a cell frame before battery cells are housed in it according to an embodiment of the present invention. [Figure 3] FIG. 2 is a perspective view of a cell frame after battery cells are housed in it according to an embodiment of the present invention. [Figure 4] 1 is a perspective view of a cell frame cover including a bus bar and a bus bar support according to an embodiment of the present invention; [Figure 5] 1 is a perspective view of a BMS assembly in which an ICB and a BMS are integrally formed according to one embodiment of the present invention. FIG. [Figure 6] 1 is a perspective view of a BMS cover that covers a BMS assembly according to an embodiment of the present invention and is coupled to a battery pack. FIG. [Figure 7] 3A and 3B are a plan view and a cross-sectional view showing a cell frame cover coupled to a cell frame in which a battery cell is accommodated and a bus bar in contact with the battery cell according to an embodiment of the present invention; [Figure 8]1 is a top plan view of a cell frame showing a BMS assembly coupled with a BMS cover on top of the cell frame according to one embodiment of the present invention. FIG. [Figure 9] 10 is a cross-sectional view showing a sensing wire formed by welding between a bus bar of a bus bar support portion of a cell frame cover and a metal pad of a metal pad support portion of a BMS assembly according to an embodiment of the present invention. FIG. [Figure 10] 1 is a perspective view of a battery pack in which a battery cell, a cell frame, a cell frame cover, a BMS assembly, and a BMS cover are combined according to an embodiment of the present invention. [Figure 11] 1 is a perspective view showing a conventional connection between a bus bar and a sensing wire of a metal pad; DETAILED DESCRIPTION OF THE INVENTION

[0043] Hereinafter, with reference to the accompanying drawings, a detailed description will be given of an embodiment of the present invention that will enable a person of ordinary skill in the art to easily carry out the present invention. However, in describing the operation principle of the preferred embodiment of the present invention in detail, detailed description of related well-known functions or configurations will be omitted if it is determined that such detailed description may unnecessarily obscure the gist of the present invention.

[0044] Furthermore, the same reference numerals are used throughout the drawings for parts having similar functions and actions. Throughout the specification, when a part is said to be connected to another part, this includes not only a direct connection but also an indirect connection via another element therebetween. Furthermore, unless otherwise specified, "including a certain element" does not mean that other elements are excluded, but that other elements may also be included.

[0045] Furthermore, descriptions that specify or add elements are applicable to all inventions unless otherwise specified, and are not limited to a particular invention.

[0046] Furthermore, throughout the description of the present invention and the claims, the singular includes the plural unless otherwise stated.

[0047] Furthermore, throughout the description of the present invention and the claims, unless otherwise specified, "or" includes "and." Therefore, "including A or B" means three cases: including A, including B, or including both A and B.

[0048] The invention will now be explained with reference to the drawings and in conjunction with detailed embodiments.

[0049] FIG. 2 is a perspective view of a cell frame according to an embodiment of the present invention before battery cells are housed therein.

[0050] The cell frame of the battery pack accommodating the battery cells of the present invention is a cell frame designed based on the concept of a soft battery pack without battery modules, and thus a plurality of battery cells, preferably cylindrical battery cells, are accommodated in the cell frame in a stacked, parallel arrangement.

[0051] In addition, an ICB-integrated BMS may be formed on a side surface of the cell frame in the receiving portion that receives the battery cell, and the side surface of the cell frame on which the ICB-integrated BMS is formed may be a first side surface.

[0052] FIG. 3 is a perspective view of a cell frame after battery cells are housed in it according to one embodiment of the present invention.

[0053] A compact soft battery pack according to a preferred embodiment of the present invention may include a battery cell receiving portion that can receive each battery cell and stacks the battery cells in parallel, a cell frame cover that is connected to a side of the battery cell receiving portion by, for example, a one-touch method, a snap-fit ​​method, a hook, or a screw method, a plurality of bus bars provided on the cell frame cover, and a side structure for being connected to an ICB-integrated BMS assembly.

[0054] The cell frame cover and the BMS assembly may be formed on a continuous side surface of the cell frame, and the cell frame cover and one side of the BMS assembly may be coupled to each other in a fitting manner.

[0055] The battery pack includes a BMS cover formed on one side of the cell frame to protect the BMS assembly.

[0056] The cell frame is injection molded from plastic, and has a receiving portion capable of receiving a battery cell, and the battery cells can be stacked in the receiving portion.

[0057] The cell frames may be connected to each other by snap fits or hooks. Each cell frame may have a number of frame hooks and frame slots on its side to connect to an adjacent cell frame. For example, a frame hook may protrude from the lower part of the outer periphery of each frame, and a frame slot may be formed at the upper part of the outer periphery of the frame into which the frame hook of an adjacent frame can be inserted.

[0058] A member for covering the battery cell receiving portion may be formed at one end of the cell frame, for example, a cell frame cover that is hook-fitted, snap-fitted, or screw-fitted.

[0059] The cell frame cover may be injection molded to have a similar shape to the cell frame.

[0060] The cell frame cover may be coupled to the cell frame slot so that the bus bar can be contact-coupled to the terminal portion of the battery cell accommodated in the cell frame located immediately below.

[0061] The battery pack may include a cell frame hook that can be coupled to the cell frame slot. The cell frame cover may be coupled to cover an open receiving portion of the cell frame. The battery cells may be received in the receiving portion of the cell frame with terminals of the battery cells positioned toward the opening of the cell frame.

[0062] The terminals of the battery cells may be in terminal contact with bus bars formed on the cell frame cover by combining the cell frame cover and the cell frame.

[0063] It will be well understood by those skilled in the art that the cell frame cover has a function and structure to protect the housed battery cells and to complete and surround the outer shape of the soft battery pack.

[0064] FIG. 4 is a perspective view of a cell frame cover including a bus bar and a bus bar support according to an embodiment of the present invention.

[0065] A soft battery pack according to one aspect of the present invention may be configured as an integrated unit including a battery cell holder that houses at least one stacked and coupled battery cell that houses secondary battery cells, and a BMS circuit board that has one or more bus bars arranged in a predetermined pattern and can be connected to each bus bar, the bus bars being electrically connected to the electrodes of the corresponding cells.

[0066] The terminals of the battery cells and the bus bars are connected to and in contact with the cell frame cover, and at least one of the ends of the bus bars may be connected to an ICB sensing unit for transmitting battery cell information to the BMS.

[0067] The cell frame cover may be coupled to or separated from one side of the cell frame, and the ICB-integrated BMS circuit board, preferably a BMS assembly, may include a bus bar support portion where an end of each bus bar is located and a plurality of sensing terminals configured to be fitted with the metal pad support portion.

[0068] The soft battery pack of the present invention may include a plurality of battery cells, a cell frame that houses the battery cells, a cell frame cover coupled to a first surface of the cell frame, a BMS (Battery management system) assembly coupled to a second surface of the cell frame, bus bar supports formed in a concave-convex shape on a first side of the cell frame cover, and metal pad supports formed in a concave-convex shape on a first side of the BMS assembly, wherein the bus bar supports and the metal pad supports are alternately fitted together on the same surface.

[0069] The shape of the projections and recesses of the bus bar support portion is not limited as long as it can be fitted into the metal pad support portion.

[0070] The shape of the protrusions and recesses may be one or more of a triangle, a square, a rectangle, a rhombus, and a hemisphere, and is not limited thereto as long as the recesses and protrusions can be formed in an amorphous shape.

[0071] FIG. 5 is a perspective view of a BMS assembly in which an ICB and a BMS are integrally formed according to one embodiment of the present invention.

[0072] The metal pad supporting portion on which the metal pad is formed may be formed in a rectangular concave-convex shape. Preferably, the metal pad supporting portion may be formed in a convex portion of the concave-convex shape. More preferably, the metal pad supporting portion may be formed in the convex portion of the metal pad.

[0073] The bus bar support portion formed on the first side of the cell frame cover may be positioned in a recess of the concave portion and may be fitted with the metal pad support portion. Preferably, the bus bar support portion may be positioned in the recess of the metal pad.

[0074] Since the BMS is formed at a predetermined position in the ICB-integrated BMS assembly, a separate data cable for data transmission to an existing ICB is not required. Therefore, when the metal pad and the bus bar are connected via a sensing wire, physical data of the battery cell can be directly transmitted to the BMS via the bus bar. The ICB-integrated BMS assembly can be formed in the form of a PCB.

[0075] The bus bar located at the bus bar support portion and the metal pad located at the metal pad support portion may be connected by a sensing wire.

[0076] Furthermore, the busbar is positioned on the busbar convex portion of the busbar support portion, and the metal pad is positioned on the metal pad convex portion of the metal pad support portion, so that the busbar can be fitted into the metal pad concave portion of the metal pad support portion, and the metal pad can be fitted into the busbar concave portion of the busbar support portion.

[0077] In addition, the BMS assembly may be formed integrally with an ICB (Inter Connected Board) including metal pads.

[0078] In addition, the bus bar may be coupled to the terminal of the battery cell on the first surface of the cell frame cover.

[0079] FIG. 6 is a perspective view of a BMS cover that covers a BMS assembly according to an embodiment of the present invention and is coupled to a battery pack.

[0080] The bus bars formed on the cell frame cover are arranged in multiple rows on the cell frame cover such that connection portions face the outer periphery of a side of a BMS assembly circuit board, and the BMS assembly may be electrically connected by fitting receptacle terminals in the form of metal pads into the connection portions of the bus bars.

[0081] Here, soldering for connecting the bus bar and the sensing wire may be formed on the metal pad. The width of the metal pad for sensing the battery cell may be equal to or less than the width of the bus bar. The width of the metal pad may be variable as long as it is easy to form the sensing wire on the bus bar.

[0082] The BMS assembly, preferably the ICB-integrated BMS circuit board, can be fixed by the BMS cover as described above. The BMS assembly can be further fixed to the cell frame via the fixing hooks on the BMS cover.

[0083] FIG. 7 is a plan view and a cross-sectional view showing a cell frame cover coupled to a cell frame in which a battery cell is accommodated and a bus bar in contact with the battery cell according to an embodiment of the present invention.

[0084] In addition, an end of the bus bar connected to the terminal of the battery cell may be positioned on the bus bar support portion.

[0085] The BMS assembly may also include a BMS cover that covers the BMS assembly.

[0086] FIG. 8 is a top plan view of a cell frame showing a BMS assembly coupled with a BMS cover on top of the cell frame according to one embodiment of the present invention.

[0087] In addition, the BMS cover may expose the bus bar support portion and the metal pad support portion to the outside and may be coupled to the BMS assembly.

[0088] Also, one or more sensing wires may be formed.

[0089] At least one of the ends of the busbar may form a connection portion for sensing connection. The connection portion may have a simple bending structure in which one end of the busbar is bent, or a hemming structure in which the bent portion is folded 180 degrees at least once. In the hemming structure, the thickness of the connection portion is at least twice the thickness of the busbar.

[0090] Therefore, when using a relatively thin busbar, it is preferable to manufacture the busbar so that the connection portion of the busbar has a hemmed structure. In other words, by making the connection portion thicker in this way, it is possible to prevent play from occurring when the connection portion and the metal pad are mated.

[0091] 9A and 9B are plan and cross-sectional views showing a sensing wire formed by welding between a bus bar of a bus bar support portion of a cell frame cover and a metal pad of a metal pad support portion of a BMS assembly according to an embodiment of the present invention.

[0092] FIG. 10 is a perspective view of a battery pack in which a battery cell, a cell frame, a cell frame cover, a BMS assembly, and a BMS cover are combined according to an embodiment of the present invention.

[0093] The battery cell may be one or more of a cylindrical type, a prismatic type, and a pouch type.

[0094] In addition, guide bars for coupling with the cell frame may be formed on both ends of the bus bar support portion.

[0095] Also, the length of the second side of the cell frame can be determined by the length of the second side of the BMS assembly.

[0096] The battery cells may preferably be cylindrical battery cells. Such battery cells have a generally known structure, and therefore, a detailed description thereof will be omitted.

[0097] The battery cells may have positive and negative terminals formed in one direction and accommodated in the opening direction of the cell frame receiving portion, thereby electrically contacting a plurality of bus bars formed on the cell frame cover coupled to cover the cell frame receiving portion.

[0098] The receiving portion of the cell frame may be configured to allow the battery cell to be fixed in the receiving portion. A cushion member, a cooling plate, etc. may be further provided between the battery cells. The cell frame cover may be configured so that at least a portion of the electrode terminals of the battery cells protrude outward, and welding may be formed to electrically connect the negative and positive electrodes of the battery cells to the bus bars. The compact battery pack according to the present invention may be used in a form in which a plurality of the battery cells are stacked horizontally or vertically for capacity or output.

[0099] Those skilled in the art will be able to make various applications and modifications within the scope of the present invention based on the above content. [Explanation of symbols]

[0100] 100 battery cells 200 cell frames 210 Cell Frame Cover 211 Guide bar 220 Busbar support 221 Busbar convex part 222 Busbar recess 300 Busbar 400 BMS Assembly 410 BMS cover 420 BMS 440 Metal pad support 441 Metal pad convex part 442 Metal pad recess 450 Metal Pad 460 Sensing Wire 500 ICB Assembly 510 ICB Data Connector

Claims

1. A plurality of battery cells; a cell frame that houses the battery cells; a cell frame cover coupled to a first surface of the cell frame; a battery management system (BMS) assembly coupled to a second surface of the cell frame; a bus bar support portion formed on a first side surface of the cell frame cover and having a plurality of openings for exposing the bus bars; a metal pad support portion that is a plurality of protrusions along the second surface of the cell frame formed in the BMS assembly; The bus bar support portion and the metal pad support portion are arranged to overlap each other so that the metal pad support portion, which is a plurality of convex portions, is alternately aligned in a straight line with the plurality of openings in the bus bar support portion.

2. The battery pack of claim 1 , wherein the bus bar located at the bus bar support portion and the metal pad located at the metal pad support portion on a surface along the second surface of the cell frame are connected to each other via a sensing wire.

3. the bus bar is positioned in the opening of the bus bar support portion; the bus bar is located between the plurality of metal pad support portions that are the plurality of protrusions, The battery pack according to claim 2 , wherein the metal pads are located between the plurality of openings in the bus bar support portion.

4. The battery pack according to claim 1 , wherein the BMS assembly is an integrated structure of an ICB (Inter Connected Board) including a metal pad and a BMS.

5. The battery pack according to claim 2 or 3, wherein the bus bar is coupled to a terminal of the battery cell on the first surface of the cell frame cover.

6. The battery pack according to claim 2 or 3, wherein the end of the bus bar connected to the terminal of the battery cell is located on the bus bar support portion.

7. The battery pack according to claim 1 , further comprising a BMS cover that covers the BMS assembly.

8. The battery pack of claim 7 , wherein the BMS cover exposes the bus bar support portion and the metal pad support portion to the outside and is coupled to the BMS assembly.

9. The battery pack according to claim 2 or 3, wherein the sensing wire is formed as one or more wires.

10. The battery pack according to any one of claims 1 to 4, wherein the battery cells are at least one of cylindrical, prismatic, and pouch-shaped.

11. The battery pack according to any one of claims 1 to 4, wherein guide bars for coupling with the cell frame are formed on both side ends of the bus bar support portion.

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