Busbar frame assembly structure and battery module employing same, and battery pack and vehicle including battery module

Abstract

The present invention relates to an assembly structure of a busbar frame, the assembly structure being characterized by comprising: a busbar frame; a hinge coupling unit connected to a battery module case and formed in a vertical multi-stage structure; and a hinge pin coupled to an upper end portion of the busbar frame.

Description

Busbar frame assembly structure and a battery module employing the same, a battery pack including the battery module and an automobile

[0001] The present invention relates to a busbar frame assembly structure and a battery module employing the same, a battery pack including the battery module, and an automobile. Specifically, the invention relates to a busbar frame assembly structure capable of preventing damage to a battery cell by ensuring that interference between the battery cell and the busbar frame does not occur when assembling the busbar frame to a battery module case, a battery module employing the same, a battery pack including the battery module, and an automobile.

[0002]

[0003] Because secondary batteries offer high applicability across product categories and possess electrical characteristics such as high energy density, they are widely applied not only to portable devices but also to electric vehicles or hybrid vehicles powered by electric sources, and power storage devices.

[0004] These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency, not only for the primary advantage of being able to drastically reduce the use of fossil fuels, but also because they do not generate any by-products from the use of energy.

[0005] Battery packs applied to electric vehicles and the like have a structure in which multiple cell assemblies containing multiple unit cells are connected in series to obtain high output.

[0006] Such a unit cell is capable of repeated charging and discharging through electrochemical reactions between components, including positive and negative current collectors, a separator, an active material, and an electrolyte.

[0007] Meanwhile, with the recent increase in the need for large-capacity structures, including their utilization as energy storage sources, there is a growing demand for multi-module battery packs that aggregate multiple battery modules in which multiple secondary batteries are connected in series and / or parallel.

[0008] When configuring a battery pack by connecting multiple cells in series or parallel, it is common practice to first configure a battery module consisting of at least one cell, and then use this at least one battery module to add other components to form the battery pack.

[0009] The number of battery modules included in the battery pack, or the number of cells included in the battery modules, can be set differently depending on the required output voltage or charge / discharge capacity.

[0010] The battery module configured in this way comprises a plurality of mutually stacked cells and a busbar assembly that electrically connects the electrode leads of the plurality of cells.

[0011] FIG. 1 is a drawing showing the state in which a busbar frame of a battery module according to the prior art is rotated and assembled to a cell assembly, and FIG. 2 is a drawing schematically showing the state before and after the lower part of the busbar frame in FIG. 1 is assembled to the cell assembly.

[0012] A conventional battery module (M) has a busbar assembly having a structure in which a busbar (22) and a busbar frame (24) are combined, and the upper part (24a) of the busbar frame (24) is hinge-connected to an upper plate (30) that covers the upper surface of a cell assembly (10).

[0013] Specifically, electrode leads (12) are formed at both ends of each cell of the cell assembly (10), and a hinge pin (24b) is connected to the upper part (24a) of the busbar frame (24) of the busbar assembly.

[0014] Additionally, the lower portion (24c) of the busbar frame (24) is formed by being bent in the direction of the cell assembly (10).

[0015] The upper plate (30) includes a connecting portion (32) formed extending from both ends in the longitudinal direction and a hinge joint portion (34) connected to the connecting portion (32).

[0016]

[0017] FIG. 3 is a schematic diagram showing a hinge pin coupled to the upper part of a busbar frame in a battery module according to the prior art and a hinge coupling portion extended and formed on the upper plate of a battery module case, and FIG. 4 is a diagram showing an enlarged view of the lower part in FIG. 2.

[0018] The hinge joint (34) includes a first end (34a) and a second end (34b) that are separated at both ends from a connecting part (32) formed extending from the upper plate (30) and form a circular shape, wherein the first end (34a) and the second end (34b) are formed spaced apart from each other.

[0019] The first end (34a) and the second end (34b) of the hinge joint (34) form a circular shape, and a fitting space (34c) is formed inside in which a hinge pin (24b) connected to the upper part (24a) of the busbar frame (24) is fitted and received.

[0020] The unexplained symbols G1 represents the first guide surface, F1 represents the first fitting surface, G2 represents the second guide surface, and F2 represents the second fitting surface, which are surfaces that the hinge pin (24b) contacts while being fitted into the hinge joint (34).

[0021] In addition, the unexplained symbol 40 is a flexible printed circuit board, and 50 is a connector.

[0022] When examining the process of assembling the busbar frame (24) to the cell assembly (10) in the conventional battery module (M) configured in this manner, a hinge pin (24b) connected to the upper part (24a) of the busbar frame (24) is inserted between the first end (34a) and the second end (34b) of the hinge joint (34), and the lower part (24c) of the busbar frame (24) is rotated toward the cell assembly (10).

[0023] At this time, there is a problem that damage to the cell assembly (10) may occur due to interference between the lower part (24c) of the busbar frame (24) and the cell assembly (10).

[0024]

[0025] [Prior Art Literature]

[0026] (Patent Document 1) KR 10-2371373 B1

[0027]

[0028] The present invention has been devised to solve various conventional problems as described above, and aims to provide a busbar frame assembly structure capable of preventing damage to a battery cell by ensuring that interference between the battery cell and the busbar frame does not occur when assembling the busbar frame to a battery module case, a battery module employing the same, a battery pack including the battery module, and an automobile.

[0029]

[0030] To achieve the above objectives, the present invention provides a busbar frame assembly structure comprising: a busbar frame; a hinge joint connected to a battery module case and formed in an upper and lower multi-stage structure; and a hinge pin coupled to the upper end of the busbar frame, wherein the hinge pin is inserted into the hinge joint located at the lowest end of the hinge joints, and the busbar frame is rotated toward the battery module case, and the hinge pin is positioned at the hinge joint located at the upper end of the hinge joints to lift the rotated busbar frame upward, thereby finally assembling the busbar frame to the battery module case.

[0031] The battery module case above includes an upper plate, and the upper plate may include a connecting portion formed extending from both ends in the longitudinal direction and a hinge connecting portion connected to the connecting portion.

[0032] It is preferable that the above hinge joint be formed with an upper and lower two-stage structure.

[0033] The hinge joint may include a first hinge joint formed so that a hinge pin connected to the upper end of the busbar frame is inserted laterally, and a second hinge joint formed so that the hinge pin inserted into the first hinge joint is lifted upward and inserted.

[0034] The second hinge joint is separated from the connecting part into two ends and includes a 2-1 end and a 2-2 end that are each extended downward to form a circular shape, wherein the 2-1 end and the 2-2 end may be formed to be spaced apart from each other on the left and right sides.

[0035] A second fitting space may be formed in the circular interior formed by the 2-1 end and 2-2 end of the second hinge joint, into which the hinge pin is inserted and received.

[0036] The distance between the second-1 end and the second-2 end is formed to be smaller than the diameter of the hinge pin, and the second hinge joint may be formed of an elastic plastic so that during the process of forcibly fitting the hinge pin into the second fitting space, the second-1 end and the second-2 end spread apart to the left and right, and the hinge pin is elastically restored after being received in the second fitting space.

[0037] The above 2-1 end may include a 2-1 guide surface formed inclined inwardly upward and a 2-1 fitting surface formed vertically upward from the top of the 2-1 guide surface, and the above 2-2 end may include a 2-2 guide surface formed inclined inwardly upward and a 2-2 fitting surface formed vertically from the top of the 2-2 guide surface.

[0038] The first hinge joint includes a first-1 end formed integrally with the second-1 end of the second hinge joint, and a first-2 end extending downward from the second-2 end to form a circular shape, and the first-1 end and the first-2 end may be formed to be spaced apart from each other vertically.

[0039] The above 1-1 end may include a 1-1 fitting surface formed horizontally outward from the lower end of the 2-1 guide surface and a 1-1 guide surface formed obliquely outwardly upward from the outer end of the 1-1 fitting surface.

[0040] The above-mentioned first-2 end may include a first-2 guide surface formed inclined inwardly upward and a first-2 fitting surface formed horizontally inwardly from the top of the first-2 guide surface.

[0041] A first fitting space may be formed in the circular interior formed by the first and second ends of the first hinge joint extending downward, into which the hinge pin is inserted and received.

[0042] The distance between the first-1 end and the first-2 end is formed to be smaller than the diameter of the hinge pin, and the first hinge joint may be formed of an elastic plastic so that the first-1 end and the first-2 end spread apart vertically during the process of forcibly fitting the hinge pin into the first fitting space and elastically restore the hinge pin after it is received in the first fitting space.

[0043] Meanwhile, the present invention can provide a battery module employing the aforementioned busbar frame assembly structure.

[0044] In addition, the present invention may provide a battery pack comprising a battery module employing the aforementioned busbar frame assembly structure and a pack case in which a plurality of said battery modules are provided and stored.

[0045] In addition, the present invention can provide a vehicle comprising the aforementioned battery pack.

[0046]

[0047] According to the means for solving the aforementioned problem, the present invention has the following effects.

[0048] The present invention is configured such that a hinge joint is formed in a multi-stage structure, a hinge pin connected to the upper end of the busbar frame is inserted into the hinge joint located at the lowest end of the hinge joints, the busbar frame is rotated toward the battery module case, and a hinge pin is positioned at the hinge joint located at the uppermost end of the hinge joints to lift the rotated busbar frame upward, thereby finally assembling the busbar frame to the battery module case. This ensures that interference between the battery cell and the busbar frame does not occur when assembling the busbar frame to the battery module case, thereby preventing damage to the battery cell.

[0049] In addition, the present invention has the effect of being convenient for assembly by forming guide surfaces that are inclined at the first-1 and first-2 ends of the first hinge joint and the second-1 and second-2 ends of the second hinge joint, respectively, thereby allowing the hinge pin to be easily press-fitted.

[0050] In addition, the present invention has the effect of preventing the hinge pin from detaching from the first hinge joint and the second hinge joint by forming the first hinge joint and the second hinge joint with elastic plastic, so that when the hinge pin is fitted into the first hinge joint and the second hinge joint by press fitting and then received in the first fitting space and the second fitting space, the first hinge joint and the second hinge joint elastically restore.

[0051]

[0052] FIG. 1 is a drawing showing the state in which a busbar frame of a battery module according to the prior art is rotated and assembled into a cell assembly.

[0053] Figure 2 is a schematic diagram showing the state of the lower part of the busbar frame in Figure 1 before and after it is assembled to the cell assembly.

[0054] FIG. 3 is a schematic diagram showing a hinge pin coupled to the upper part of a busbar frame in a battery module according to the prior art and a hinge coupling portion extended and formed on the upper plate of a battery module case.

[0055] Figure 4 is a drawing showing an enlarged view of the lower part of Figure 2.

[0056] FIG. 5 is a drawing showing a multi-stage hinge joint and a hinge pin employed in a busbar frame assembly structure according to the present invention.

[0057] FIG. 6 is a drawing showing a state in which a busbar frame rotates by positioning a hinge pin at the lower first hinge joint in a hinge joint employed in a busbar frame assembly structure according to the present invention.

[0058] Figure 7 is a drawing showing an enlarged view of the lower part of Figure 6.

[0059] FIG. 8 is a drawing showing a state in which a hinge pin is positioned at the upper second hinge joint in a hinge joint employed in a busbar frame assembly structure according to the present invention, so that the busbar frame is lifted upward.

[0060] Figure 9 is a drawing showing an enlarged view of the lower part of Figure 8.

[0061] FIG. 10 is a schematic diagram showing the configuration of a battery pack according to the present invention.

[0062] FIG. 11 is a schematic diagram showing a car including the battery pack of FIG. 10.

[0063]

[0064] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid the present invention being interpreted ambiguously. Throughout the specification, like reference numerals refer to like components.

[0065] In drawings, thicknesses may be enlarged to clearly represent multiple layers and regions. Throughout the specification, the same reference numerals are used for similar parts. When a part such as a layer, film, region, or plate is described as being "above" another part, this includes not only cases where it is "immediately above" another part, but also cases where there is another part in between. Conversely, when a part is described as being "immediately above" another part, it means that there is no other part in between. Furthermore, when a part such as a layer, film, region, or plate is described as being "below" another part, this includes not only cases where it is "immediately below" another part, but also cases where there is another part in between. Conversely, when a part is described as being "immediately below" another part, it means that there is no other part in between.

[0066] FIG. 5 is a drawing showing a multi-stage hinge joint and a hinge pin employed in a busbar frame assembly structure according to the present invention.

[0067] For components other than the hinge joint, refer to FIGS. 6 to 9 described later.

[0068] A battery module according to the present invention comprises a cell assembly (100), a busbar frame (200) having a hinge pin (212) coupled to an upper portion (210) and a lower portion (220) bent into an L-shape in the direction of the cell assembly (100), and an upper plate (300) covering the upper surface of the cell assembly (100).

[0069] The battery module according to the present invention adopts a structure in which a busbar frame (200) is assembled to a hinge joint (320) formed in an upper and lower multi-stage structure connected to the upper plate (300) of the battery module case.

[0070] The busbar frame assembly structure is configured such that a hinge pin (212) connected to the upper part (210) of the busbar frame (200) is inserted into the hinge joint (first hinge joint (H1)) located at the lowest part of the hinge joint (320), and then the busbar frame (200) is rotated toward the battery module case, and then the hinge pin (212) is positioned at the hinge joint (second hinge joint (H2)) located at the upper part of the hinge joint (320) to lift the busbar frame (200) rotated in this way upward, thereby finally assembling the busbar frame (200) to the battery module case.

[0071] Here, the lower part (220) of the busbar frame (200), which is bent into an L shape, does not interfere with the cell assembly (100), so the battery cell is not damaged.

[0072] The upper plate (300) of the battery module case includes a connecting portion (310) formed extending from both ends in the longitudinal direction and a hinge connecting portion (320) connected to the connecting portion (310).

[0073] The hinge joint (320) can be formed in an upper and lower multi-stage structure, and in the present invention, an upper and lower two-stage structure is used as an example.

[0074] The hinge joint (320) includes a first hinge joint (H1) formed so that a hinge pin (212) connected to the upper part (210) of the busbar frame (200) is inserted laterally, and a second hinge joint (H2) formed so that the hinge pin (212) inserted into the first hinge joint (H1) is lifted upward and inserted.

[0075] The first hinge joint (H1) may include a first-1 end (H1-1) and a first-2 end (H1-2). The first-1 end (H1-1) is formed integrally with the second-1 end (H2-1) of the second hinge joint (H2) to be described later, and the first-2 end (H1-2) extends downward from the second-2 end (H2-2) of the second hinge joint (H2) to form a circular shape.

[0076] Here, the first-1 end (H1-1) and the first-2 end (H1-2) of the first hinge joint (H1) are formed to be spaced apart from each other vertically, so that the hinge pin (212) connected to the upper part (210) of the busbar frame (200) can be inserted laterally.

[0077] The first-1 end (H1-1) of the first hinge joint (H1) includes a first-1 fitting surface (F1-1) formed horizontally outward from the lower end of the second-1 guide surface (G2-1) of the second hinge joint (H2) described later, and a first-1 guide surface (G1-1) formed obliquely outwardly upward from the outer end of the first-1 fitting surface (F1-1).

[0078] Additionally, the first-2 end (H1-2) includes a first-2 guide surface (G1-2) formed inclined inwardly and upwardly, and a first-2 fitting surface (F1-2) formed horizontally inwardly from the top of the first-2 guide surface (G1-2).

[0079] In this way, by forming a first-1 guide surface (G1-1) and a first-2 guide surface (G1-2) that are formed at an angle on the first-1 end (H1-1) and the first-2 end (H1-2) of the first hinge joint (H1), respectively, the interference fitting assembly of the hinge pin (212) can be facilitated.

[0080] A first fitting space (H1-3) is formed in the circular interior formed by the first-second end (H1-2) of the first hinge joint (H1) extending downward, into which a hinge pin (212) is fitted and received.

[0081] The distance between the first-1 end (H1-1) and the first-2 end (H1-2) is formed to be smaller than the diameter of the hinge pin (212).

[0082] In the process of forcibly fitting the hinge pin (212) into the first fitting space (H1-3), the first-1 end (H1-1) and the first-2 end (H1-2) spread apart vertically, and the first hinge joint (H1) can be formed of an elastic plastic so that the hinge pin (212) is received into the first fitting space (H1-3) and then elastically restored.

[0083] In this way, when the hinge pin (212) is fitted into the first hinge joint (H1) by force fitting and then received into the first fitting space (H1-3), the first hinge joint (H1) elastically restores itself, thereby preventing the hinge pin (212) from detaching from the first hinge joint (H1).

[0084] The second hinge joint (H2) is separated into two ends from the connecting part (310) extending from the upper plate (300), and includes a second-1 end (H2-1) and a second-2 end (H2-2) that are each extended downward to form a circular shape.

[0085] These second-1 end (H2-1) and second-2 end (H2-2) are formed to be spaced apart from each other on the left and right sides, so that the hinge pin (212) connected to the upper part (210) of the busbar frame (200) can be lifted upward and fitted into the second hinge joint (H2) while being received in the first fitting space (H1-3).

[0086] A second fitting space (H2-3) is formed in the circular interior formed by the second-1 end (H2-1) and the second-2 end (H2-2) of the second hinge joint (H2) such as this, into which a hinge pin (212) is fitted and received.

[0087] The distance between the 2-1 end (H2-1) and the 2-2 end (H2-2) of the 2nd hinge joint (H2) is formed to be smaller than the diameter of the hinge pin (212).

[0088] In the process of forcibly fitting the hinge pin (212), which is accommodated in the first fitting space (H1-3), into the second fitting space (H2-3), the second-1 end (H2-1) and the second-2 end (H2-2) spread apart to the left and right, and the second hinge joint (H2) is formed of an elastic plastic so that the hinge pin (212) is elastically restored after being accommodated in the second fitting space (H2-3).

[0089] In this way, when the hinge pin (212) is fitted into the second hinge joint (H2) by force fitting and then received into the second fitting space (H2-3), the second hinge joint (H2) elastically restores itself, thereby preventing the hinge pin (212) from detaching from the second hinge joint (H2).

[0090] The second-1 end (H2-1) of the second hinge joint (H2) includes a second-1 guide surface (G2-1) formed inclined inwardly and upward, and a second-1 fitting surface (F2-1) formed vertically upward from the top of the second-1 guide surface (G2-1).

[0091] Additionally, the second-2 end (H2-2) includes a second-2 guide surface (G2-2) formed inclined inwardly and upward, and a second-2 fitting surface (F2-2) formed vertically from the top of the second-2 guide surface (G2-2).

[0092] By forming the second-1 guide surface (G2-1) and the second-2 guide surface (G2-2) at an angle on the second-1 end (H2-1) and the second-2 end (H2-2) of the second hinge joint (H2), respectively, the hinge pin (212) can be easily press-fitted, which has the advantage of being convenient for assembly.

[0093]

[0094] FIG. 6 is a drawing showing a state in which a busbar frame rotates by positioning a hinge pin at the lower first hinge joint in a hinge joint employed in a busbar frame assembly structure according to the present invention, and FIG. 7 is a drawing showing an enlarged view of the lower part in FIG. 6.

[0095] A hinge pin (212) connected to the upper part (210) of the busbar frame (200) is positioned between the first-1 end (H1-1) and the first-2 end (H1-2) of the first hinge joint (H1). Then, when the hinge pin (212) is pushed to the right in FIG. 6, the hinge pin (212) comes into contact with the first-1 guide surface (G1-1) and the first-2 guide surface (G1-2). When more force is applied to the right, the hinge pin (212) is guided by the first-1 guide surface (G1-1) and the first-2 guide surface (G1-2) and passes through the first-1 fitting surface (F1-1) and the first-2 fitting surface (F1-2). At this time, the first-1 end (H1-1) of the first hinge joint (H1), which is made of an elastic material, is pushed upward. As the first-2 end (H1-2) is pushed downward, the hinge pin (212) is received into the first fitting space (H1-3).

[0096] When the busbar frame (200) is rotated toward the cell assembly (100) while the hinge pin (212) is received in the first fitting space (H1-3), the lower part (220) of the busbar frame (200), which is bent into an L-shape, is positioned at the bottom of the cell assembly (100) without any interference with the cell assembly (100).

[0097]

[0098] FIG. 8 is a drawing showing a state in which a hinge pin is positioned at the upper second hinge joint of a hinge joint employed in a busbar frame assembly structure according to the present invention, and the busbar frame is lifted upward, and FIG. 9 is a drawing showing an enlarged view of the lower part in FIG. 8.

[0099] After positioning the hinge pin (212) received in the first fitting space (H1-3) between the 2-1 end (H2-1) and the 2-2 end (H2-2) of the second hinge joint (H2), when the hinge pin (212) is lifted upward in FIG. 8, the hinge pin (212) comes into contact with the 2-1 guide surface (G2-1) and the 2-2 guide surface (G2-2). When more force is applied upward, the hinge pin (212) is guided by the 2-1 guide surface (G2-1) and the 2-2 guide surface (G2-2) and passes through the 2-1 fitting surface (F2-1) and the 2-2 fitting surface (F2-2). At this time, the 2-1 end (H2-1) of the second hinge joint (H2), which is made of an elastic material, is pushed to the left and the 2-2 As the end (H2-2) is pushed to the right, the hinge pin (212) is received into the second fitting space (H2-3).

[0100] Accordingly, the lower part (220) of the busbar frame (200) is lifted upward and comes into close contact with the bottom of the cell assembly (100).

[0101]

[0102] FIG. 10 is a schematic diagram showing the configuration of a battery pack according to the present invention, and FIG. 11 is a schematic diagram showing a vehicle including the battery pack of FIG. 10.

[0103] The battery pack (P) includes the aforementioned battery module (M) and a pack case (C) in which a plurality of battery modules (M) are provided and stored.

[0104] This battery pack (P) can be provided in the vehicle (V) as a fuel source for the vehicle.

[0105] For example, the battery pack (P) can be provided in the vehicle (V) in an electric vehicle, a hybrid vehicle, and other ways in which the battery pack (P) can be used as a fuel source.

[0106] In addition, it goes without saying that the battery pack (P) can be equipped in other devices, mechanisms, and facilities, such as an energy storage system that uses a secondary battery, in addition to the vehicle (V).

[0107] Thus, since the device, mechanism, and facility equipped with the battery pack (P), such as the battery pack (P) and the automobile (V) according to the present invention, includes the aforementioned battery module (M), it is possible to realize a battery pack (P) having all the advantages of the aforementioned battery module (M) and a device, mechanism, and facility such as an automobile equipped with such a battery pack (P).

[0108]

[0109] [Explanation of the symbol]

[0110] 100 : Cell assembly

[0111] 200 : Busbar frame

[0112] 212 : Hinge pin

[0113] 300 : Upper plate

[0114] 310 : Connection part

[0115] 320 : Hinge joint

[0116] H1: First hinge joint

[0117] H2: Second hinge joint

Claims

1. As an assembly structure of a busbar frame, Busbar frame; A hinge joint connected to the battery module case and formed in an upper and lower multi-stage structure; and It includes a hinge pin coupled to the upper part of the above busbar frame, Insert the hinge pin into the hinge joint located at the lowest of the hinge joints, then rotate the busbar frame toward the battery module case, and In order to lift the aforementioned rotated busbar frame upward, the hinge pin is positioned at the uppermost hinge joint among the aforementioned hinge joints to finally assemble the busbar frame to the battery module case. Busbar frame assembly structure.

2. In Claim 1, The above battery module case includes an upper plate, and The upper plate comprises a connecting portion extending from both ends in the longitudinal direction and a hinge joint connected to the connecting portion. Busbar frame assembly structure.

3. In Claim 2, The above hinge joint is formed with an upper and lower two-stage structure, Busbar frame assembly structure.

4. In Claim 3, The above hinge joint is, A first hinge joint formed so that a hinge pin connected to the upper part of the busbar frame is inserted laterally, and A second hinge joint formed such that the hinge pin fitted into the first hinge joint is lifted upward and fitted therein, Busbar frame assembly structure.

5. In Claim 4, The second hinge joint comprises a 2-1 end and a 2-2 end that are separated from the connecting part at both ends and extend downward to form a circular shape, wherein the 2-1 end and the 2-2 end are formed to be spaced apart from each other from left to right. Busbar frame assembly structure.

6. In Claim 5, A second fitting space is formed in the circular interior formed by the 2-1 end and 2-2 end of the second hinge joint, into which the hinge pin is inserted and received. Busbar frame assembly structure.

7. In Claim 6, The distance between the above 2-1 end and the above 2-2 end is formed to be smaller than the diameter of the hinge pin, and In the process of forcibly fitting the hinge pin into the second fitting space, the second hinge joint is formed of an elastic plastic so that the second-1 end and the second-2 end spread apart laterally and the hinge pin is elastically restored after being received in the second fitting space. Busbar frame assembly structure.

8. In Claim 5, The above 2-1 end includes a 2-1 guide surface formed inclined inwardly and upward, and a 2-1 fitting surface formed vertically upward from the top of the 2-1 guide surface. The above-mentioned second-2 end comprises a second-2 guide surface formed inclined inwardly and upward, and a second-2 fitting surface formed vertically from the upper end of the second-2 guide surface. Busbar frame assembly structure.

9. In Claim 8, The first hinge joint above is, It includes a first-1 end formed integrally with the second-1 end of the second hinge joint, and a first-2 end extending downward from the second-2 end to form a circular shape. The above-mentioned first-1 end and first-2 end are formed to be spaced apart from each other vertically, Busbar frame assembly structure.

10. In Claim 9, The above 1-1 end is, A first-1 fitting surface formed horizontally outward from the bottom of the second-1 guide surface and a first-1 guide surface formed obliquely outwardly from the outer end of the first-1 fitting surface, Busbar frame assembly structure.

11. In Claim 9, The above 1-2 ends are, A first-second guide surface formed inclined inwardly upward and a first-second fitting surface formed horizontally inwardly from the top of the first-second guide surface. Busbar frame assembly structure.

12. In Claim 9, A first fitting space is formed in the circular interior formed by the downward extension of the first-second end of the first hinge joint, into which the hinge pin is inserted and received. Busbar frame assembly structure.

13. In Claim 12, The distance between the first-1 end and the first-2 end is formed to be smaller than the diameter of the hinge pin, and In the process of forcibly fitting the hinge pin into the first fitting space, the first-1 end and the first-2 end spread apart vertically, and the first hinge joint is formed of an elastic plastic so as to elastically restore after the hinge pin is received in the first fitting space. Busbar frame assembly structure.

14. A battery module employing a busbar frame assembly structure according to any one of claims 1 to 13.

15. A battery module according to claim 14 and a pack case in which a plurality of battery modules are provided and stored, Battery pack.

16. A battery pack comprising the battery pack according to claim 15, automobile.

Images