Cell stack assembly

Abstract

The present invention relates to a cell stack assembly to which an insulating cover having a structure that allows each bus bar to be separated is applied. The cell stack assembly of the present invention includes: a cell stack including a plurality of cells from which electrode leads are led out; a bus bar frame assembly coupled to the cell stack, the bus bar frame including a plurality of bus bars electrically connected to the electrode leads of the cell stack, a bus bar frame supporting the bus bars, and ribs crossing between the bus bars; and an insulating cover coupled to the bus bar frame to cover the bus bar frame assembly, the insulating cover including partition members formed at positions corresponding to the ribs of the bus bar frame assembly.

Description

[Technical Field]

[0001] The present invention relates to a cell stack assembly having an insulating cover that can block or limit the space between a pair of adjacently arranged bus bars.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0088554, filed on July 7, 2023, and all contents disclosed in the documents of said Korean patent application are incorporated herein by reference. [Background technology]

[0003] When a battery pack is constructed by connecting a plurality of cells in series / parallel, a common method is to construct a cell stack assembly consisting of at least one cell, and then use this at least one cell stack assembly to add other components to construct the battery pack.

[0004] Such a cell stack assembly includes a cell stack in which a plurality of cells are stacked, and bus bar frames that cover the front and rear surfaces of the cell stack.

[0005] FIG. 1 is a diagram showing a conventional cell stack assembly 10. As shown in FIG.

[0006] 1, the cell stack 20 includes a plurality of cells 21 stacked in one direction. Each cell 21 has electrode leads 30 extending from both sides.

[0007] Therefore, in the conventional cell stack assembly 10, a plurality of electrode leads 30 are led out from the front and rear surfaces of the cell stack 20.

[0008] As shown in FIG. 1, a plurality of bus bars 50 are provided on the bus bar frame 40 to be electrically connected to the electrode leads 30 of the cell stack 20 .

[0009] As shown in FIG. 2, the conventional cell stack assembly 10 may be provided with an end plate 70 that covers the bus bar frame 40, and may also be provided with a module frame 60 that wraps around the cell stack 20.

[0010] Meanwhile, the separated bus bars 50 must be mounted on the bus bar frame 40 at predetermined intervals to avoid direct contact, but as the oxidation / reduction reaction continues, metal deposition may occur on the surface, forming a metal protrusion D. The metal protrusion D may continue to grow, which may cause problems in connecting two separated bus bars 50.

[0011] FIG. 3 shows busbars 50 on which metal deposition occurs on the surface due to an oxidation / reduction reaction while immersed in an electrolyte. Referring to FIG. 3, it can be seen that each separate busbar 50 is connected to each other by metal protrusions D formed by the deposition. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Korean Patent Publication No. 10-2022-0011430 Summary of the Invention [Problem to be solved by the invention]

[0013] Therefore, the present invention has been devised to solve the above-mentioned problems, and an object of the present invention is to provide a cell stack assembly having a structure that can suppress the occurrence of short circuits between bus bars.

[0014] Other objects and advantages of the present invention can be understood from the following description and become more apparent from the embodiments of the present invention. Also, it is easily understood that the objects and advantages of the present invention can be realized by the means and combinations thereof as set forth in the claims. [Means for solving the problem]

[0015] According to the present invention, a cell stack including a plurality of cells from which electrode leads are led out; The present invention provides a cell stack assembly comprising: a bus bar frame assembly coupled to the cell stack, the bus bar frame including a plurality of bus bars electrically connected to electrode leads of the cell stack, a bus bar frame supporting the bus bars, and ribs crossing between the bus bars; and an insulating cover coupled to the bus bar frame to cover the bus bar frame assembly, the insulating cover including partition members formed at positions corresponding to the ribs of the bus bar frame assembly.

[0016] The ribs may be arranged at predetermined intervals along the longitudinal direction of the bus bar frame and may extend along the width direction of the bus bar frame.

[0017] The partition member may be formed to extend along the longitudinal direction of the rib so as to limit a space between any pair of adjacent bus bars.

[0018] The partition members may be formed in one-to-one correspondence with the respective ribs.

[0019] The partition members may be formed to protrude by a distance from the ends of the ribs to the inside of the insulating cover.

[0020] The partition members may be spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

[0021] The partition members may be formed at positions coinciding with the ribs, and the partition members and the ribs may be joined to each other in contact with each other so as to separate the spaces between the bus bars.

[0022] The partition members may be formed to protrude beyond a distance from the end of the rib to the inside of the insulating cover.

[0023] The partition members may be spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

[0024] A pair of partition members may be formed corresponding to each of the ribs.

[0025] The pair of partition members may be spaced apart from each other by a predetermined distance greater than the thickness of the rib.

[0026] The pair of partition members may protrude from the ends of the ribs to the inside of the insulating cover by a distance therebetween.

[0027] The pair of partition members may be spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

[0028] The pair of partition members may be formed to protrude by a distance greater than a distance between the ends of the ribs and the inside of the insulating cover.

[0029] The pair of partition members may be spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs. [Effects of the Invention]

[0030] According to the present invention, it is possible to improve safety by suppressing the occurrence of short circuits at bus bar portions in a cell stack assembly. [Brief explanation of the drawings]

[0031] [Figure 1] 1 shows a conventional cell stack assembly. [Figure 2]1 shows a conventional cell stack assembly to which a module frame and end plates are applied. [Figure 3] 1 shows a busbar with metal projections formed thereon. [Figure 4] 1 is an exploded perspective view of a cell stack assembly according to the present invention. [Figure 5] 1 shows a bus bar frame assembly and corresponding insulating cover. [Figure 6] 1 shows a bus bar frame assembly included in a cell stack assembly according to a first embodiment and an insulating cover coupled thereto. [Figure 7] 7 shows the bus bar frame assembly and insulating cover of FIG. 6 cut away to show only a portion of the area where the ribs and partition members are located. [Figure 8] 8 shows an example in which metal protrusions are formed on the bus bars on the bus bar frame of FIG. 7. [Figure 9] 8 shows another example in which metal protrusions are formed on the bus bars on the bus bar frame of FIG. 7. [Figure 10] 10 shows a bus bar frame assembly included in a cell stack assembly according to a second embodiment and an insulating cover coupled thereto. [Figure 11] 11 shows the bus bar frame assembly and insulating cover of FIG. 10 cut away to show only a portion of the area where the ribs and partition members are located. [Figure 12] 10 shows a bus bar frame assembly included in a cell stack assembly according to a third embodiment and an insulating cover coupled thereto. [Figure 13] 13 shows the bus bar frame assembly and insulating cover of FIG. 12 cut away to show only a portion of the area where the ribs and partition members are located. [Figure 14] 10 shows a bus bar frame assembly included in a cell stack assembly according to a fourth embodiment and an insulating cover coupled thereto. [Figure 15]15 shows the bus bar frame assembly and insulating cover of FIG. 14 cut away to show only a portion of the area where the ribs and partition members are located. [Figure 16] 10 shows a bus bar frame assembly included in a cell stack assembly according to a fifth embodiment and an insulating cover coupled thereto. [Figure 17] 17 shows the bus bar frame assembly and insulating cover of FIG. 16 cut away to show only a portion of the area where the ribs and partition members are located. DETAILED DESCRIPTION OF THE INVENTION

[0032] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before that, it should be noted that the terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concepts of the terms in order to best describe his own invention.

[0033] Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and it can be understood that there may be various equivalents and modifications that can replace them at the time of this application.

[0034] Furthermore, in the description of the present invention, if it is determined that a detailed description of related publicly known structures or functions may obscure the gist of the present invention, the detailed description will be omitted.

[0035] The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and therefore the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown in a schematic manner for clearer explanation. Therefore, the sizes and proportions of each component do not completely reflect the actual sizes and proportions.

[0036] The present invention relates to a cell stack assembly having an insulating cover that can block or limit the space between a pair of adjacently arranged bus bars.

[0037] Figures 4 to 9 relate to a cell stack assembly according to a first embodiment of the present invention, Figures 10 to 11 relate to a cell stack assembly according to a second embodiment of the present invention, Figures 12 to 13 relate to a cell stack assembly according to a third embodiment of the present invention, Figures 14 to 15 relate to a cell stack assembly according to a fourth embodiment of the present invention, and Figures 16 to 17 relate to a cell stack assembly according to a fifth embodiment of the present invention.

[0038] The cell stack assembly of the present invention will be described below with reference to the drawings. For reference, the directions of front, back, up, down, left, and right used in the following description to specify relative positions are intended to aid in understanding the invention, and unless otherwise specified, are based on the directions shown in the drawings.

[0039] FIG. 4 shows an exploded perspective view of the cell stack assembly 100 of the present invention.

[0040] The cell stack assembly 100 of the present invention includes a cell stack 110 including a plurality of cells 111, a bus bar frame assembly 120 coupled to the cell stack 110, and an end plate 130 coupled to the bus bar frame 121.

[0041] Furthermore, the cell stack assembly 100 of the present invention may further include a module frame 150 coupled to wrap around the periphery of the cell stack 110, as shown in FIG.

[0042] The cell stack 110 includes a plurality of cells 111 stacked in one direction, with electrode leads 111a extending from both sides.

[0043] Specifically, the cells 111 are stacked along the X direction, and the electrode leads 111a of each cell 111 are led out to both sides of the cell 111 with the Y direction as the reference.

[0044] The bus bar frame assembly 120 includes a plurality of bus bars 122 electrically connected to the electrode leads 111a of the cell stack 110, a bus bar frame 121 supporting the bus bars 122, and ribs 123 crossing between the bus bars 122.

[0045] As shown in FIG. 4, the bus bar frame assembly 120 is coupled to the front and rear surfaces of the cell stack 110 from which the electrode leads 111a are led out.

[0046] The bus bar frame 121 has a front surface to which the bus bar 122 is coupled, and a rear surface to which the cell stack 110 is coupled.

[0047] The bus bar frame 121 includes opening holes through which the electrode leads 111a can pass, and the cell stack 110 is coupled to the rear surface of the bus bar frame 121 with the electrode leads 111a passing through the opening holes.

[0048] A plurality of bus bars 122 are coupled to the bus bar frame 121, and the bus bars 122 are spaced apart from each other at predetermined intervals.

[0049] The bus bar 122 may be donut-shaped with an opening in the center as shown in the present invention, but may be any shape that can be electrically connected to the electrode lead 111a passing through the opening hole.

[0050] The plurality of bus bars 122 are spaced apart at predetermined intervals along the longitudinal direction of the bus bar frame 121. That is, the bus bars 122 are spaced apart at intervals on the front surface of the bus bar frame 121 along the X direction.

[0051] The ribs 123 are formed to protrude from the front surface of the bus bar frame 121 between any pair of adjacent bus bars 122 so that the bus bars 122 can be separated.

[0052] The ribs 123 are formed to extend along the Z direction so that the ends of any pair of adjacent bus bars 122 do not face each other. That is, the ribs 123 are formed to extend from the lower end to the upper end of the bus bar frame 121.

[0053] The ribs 123 are formed to protrude between all the bus bars 122 arranged on the bus bar frame 121 .

[0054] The end plate 130 is coupled to cover the front surface of the bus bar frame 121 to protect the bus bars 122 formed on the front surface of the bus bar frame 121 and the electrode leads 111a electrically connected to the bus bars 122.

[0055] The module frame 150 is coupled to wrap around the cell stack 110 exposed to the outside without being covered by the end plate 130. That is, the module frame 150 wraps and protects both side surfaces exposed in the X direction and the top and bottom surfaces exposed in the Z direction of the cell stack 110.

[0056] The module frame 150 may be in a tubular shape as shown in FIG. 4, but is not limited thereto, and any shape that can effectively enclose and protect the cell stack 110 is applicable.

[0057] The cell stack assembly 100 of the present invention further includes an insulating cover 140 interposed between the bus bar frame assembly 120 and the end plate 130 to prevent electrical conduction due to direct contact between the bus bar frame assembly 120 and the end plate 130.

[0058] The insulating cover 140 is made of a material having electrical insulating properties and is coupled to the bus bar frame assembly 120 so as to enclose both the exposed bus bar 122 and the electrode lead 111a.

[0059] In particular, the present invention is characterized in that a partition member 141 is formed on the inner surface of the insulating cover 140 at a position corresponding to the rib 123 of the bus bar frame assembly 120 .

[0060] 5 shows a bus bar frame assembly 120 and a corresponding insulating cover 140. More specifically, FIG. 5 shows the bus bar frame assembly 120 coupled to the cell stack 110 and the insulating cover 140 including partition members 141 that correspond to the ribs 123 of the bus bar frame assembly 120.

[0061] As shown in FIG. 5, the cell stack 110 is surrounded and protected by a module frame 150 , and only the electrode lead 111 a passes through the bus bar frame 121 and is connected to the bus bar 122 .

[0062] As shown in FIG. 5, the partition members 141 are formed to extend along the longitudinal direction of the ribs 123 so as to limit the space between any pair of adjacent bus bars 122.

[0063] Therefore, the space between the bus bar frame assembly 120 and the insulating cover 140 can be divided into sections according to the number of bus bars 122 by the ribs 123 of the bus bar frame assembly 120 and the partition members 141 of the insulating cover 140 formed corresponding to the ribs 123. In one example, the cell stack assembly 100 of Fig. 5 includes four bus bars 122, and the space between the bus bar frame assembly 120 and the insulating cover 140 is divided into four sections by the ribs 123 and the partition members 141.

[0064] Hereinafter, various embodiments of the cell stack assembly 100 of the present invention in which the structures of the partition wall member 141 and the ribs 123 are modified will be described.

[0065] (First embodiment) FIG. 6 shows the bus bar frame assembly 120 included in the cell stack assembly 100 according to the first embodiment and the insulating cover 140 coupled thereto, with a portion of the insulating cover 140 cut away for ease of understanding.

[0066] FIG. 7 shows a cutaway view of only a portion of the bus bar frame assembly 120 and insulating cover 140 shown in FIG. 6, where the rib 123 and the partition member 141 are located.

[0067] 6 and 7, the partition wall members 141 are formed to protrude by a distance from the end of the rib 123 to the inside of the insulating cover 140. However, the partition wall members 141 are spaced apart from the rib 123 by a predetermined distance along the longitudinal direction of the bus bar frame 121, i.e., in the X direction, so as not to come into contact with the rib 123.

[0068] FIG. 8 shows a metal protrusion D grown on one of the bus bars 122 provided on the bus bar frame 121 of FIG.

[0069] As shown in Figure 8 above, metal protrusion D is formed on the bus bar 122 located on the left side of rib 123, running along the side of rib 123, but is blocked by partition member 141 and cannot grow to other bus bars 122.

[0070] FIG. 9 shows metal protrusions D that have grown on bus bars 122 that are located closer to partition member 141 among bus bars 122 provided on bus bar frame 121 of FIG.

[0071] As shown in Figure 9 above, metal protrusion D is formed on bus bar 122 located to the right of rib 123, running along the side of rib 123 and partition member 141, but is blocked by the end of partition member 141 and cannot pass through the narrow space between rib 123 and partition member 141.

[0072] Because the ribs 123 and the partition members 141 are not in complete contact with each other, the spaces between the bus bars 122 are not physically blocked. However, because the ribs 123 and the partition members 141 extend in symmetrical directions, a structural restriction on the movement of the metal protrusions D growing on the surfaces of the bus bars 122 can be imposed. That is, because the spaces between the ribs 123 and the partition members 141 are formed in a zigzag shape, the metal protrusions D cannot pass through smoothly.

[0073] (Second embodiment) FIG. 10 shows the bus bar frame assembly 120 included in the cell stack assembly 100 according to the second embodiment and the insulating cover 140 coupled thereto, with a portion of the insulating cover 140 cut away for ease of understanding.

[0074] FIG. 11 shows a cutaway view of only a portion of the bus bar frame assembly 120 and insulating cover 140 shown in FIG. 10 where the rib 123 and the partition member 141 are located.

[0075] 10 and 11, the partition wall members 141 are formed to protrude beyond a distance from the end of the rib 123 to the inside of the insulating cover 140. However, the partition wall members 141 are spaced apart from the rib 123 at a predetermined interval along the longitudinal direction of the bus bar frame 121, i.e., in the X direction, so as not to come into contact with the rib 123.

[0076] Because the ribs 123 and the partition members 141 are not in complete contact with each other, the spaces between the bus bars 122 are not physically blocked. However, because the ribs 123 and the partition members 141 extend in symmetrical directions, a structural restriction on the movement of the metal protrusions D growing on the surfaces of the bus bars 122 can be imposed. That is, because the spaces between the ribs 123 and the partition members 141 are formed in a zigzag shape, the metal protrusions D cannot pass through smoothly.

[0077] The partition wall member 141 included in the cell stack assembly 100 according to the second embodiment has a longer protruding length than that of the first embodiment. Therefore, the degree of bending of the space formed between the partition wall member 141 and the rib 123 is greater, which may improve the blocking effect of the metal protrusion D.

[0078] (Third embodiment) FIG. 12 shows the bus bar frame assembly 120 included in the cell stack assembly 100 according to the third embodiment and the insulating cover 140 coupled thereto, with a portion of the insulating cover 140 cut away for ease of understanding.

[0079] FIG. 13 shows a cutaway view of only a portion of the bus bar frame assembly 120 and insulating cover 140 shown in FIG. 12 where the rib 123 and the partition member 141 are located.

[0080] 12 and 13, the partition wall member 141 is formed to protrude beyond the distance from the end of the rib 123 to the inside of the insulating cover 140.

[0081] The partition wall members 141 are formed at positions that coincide with the ribs 123, and the partition wall members 141 and the ribs 123 are joined to each other in contact with each other so as to separate the spaces between the bus bars 122.

[0082] Since the ribs 123 and the partition members 141 are in complete contact with each other, the spaces between the bus bars 122 are physically separated as shown in FIG.

[0083] Therefore, the cell stack assembly 100 including the partition member 141 of the above-described form fundamentally prevents two or more bus bars 122 from being connected to each other by the metal protrusions D.

[0084] (Fourth embodiment) FIG. 14 shows the bus bar frame assembly 120 included in the cell stack assembly 100 according to the fourth embodiment and the insulating cover 140 coupled thereto, with a portion of the insulating cover 140 cut away for ease of understanding.

[0085] FIG. 15 shows a cutaway view of only a portion of the bus bar frame assembly 120 and insulating cover 140 shown in FIG. 14 where the rib 123 and the partition member 141 are located.

[0086] A pair of partition members 141 are formed corresponding to each of the ribs 123 included in the cell stack assembly 100 according to the fourth embodiment.

[0087] 14 and 15, the pair of partition members 141 are formed to protrude from the ends of the ribs 123 to the inside of the insulating cover 140 by a distance therebetween.

[0088] However, the partition members 141 are spaced apart from the ribs 123 at a predetermined interval along the longitudinal direction of the bus bar frame 121, that is, in the X direction, so as not to come into contact with the ribs 123.

[0089] That is, one of a pair of partition members 141 corresponding to any one of the ribs 123 is spaced to the left of the rib 123, and the other partition member 141 is spaced to the right of the rib 123. In this case, it is preferable that the pair of partition members 141 are spaced apart by a predetermined distance wider than the thickness of the ribs 123.

[0090] Because the ribs 123 and the partition members 141 are not in complete contact with each other, the spaces between the bus bars 122 are not physically blocked. However, because the ribs 123 and the partition members 141 extend in symmetrical directions, a structural restriction on the movement of the metal protrusions D growing on the surfaces of the bus bars 122 can be imposed. That is, because the spaces between the ribs 123 and the partition members 141 are formed in a zigzag shape, the metal protrusions D cannot pass through smoothly.

[0091] In particular, in the cell stack assembly 100 according to the fourth embodiment, the metal protrusion D formed on the surface of any one of the bus bars 122 must be redirected once more than in the cell stack assemblies 100 according to the first and second embodiments before it can pass between the rib 123 and a pair of partition members 141. In other words, in the cell stack assembly 100 according to the fourth embodiment, it is more difficult for the metal protrusion D to pass over the rib 123 and reach another adjacent bus bar 122.

[0092] (Fifth embodiment) FIG. 16 shows the bus bar frame assembly 120 included in the cell stack assembly 100 according to the fifth embodiment and the insulating cover 140 coupled thereto, with a portion of the insulating cover 140 cut open for ease of understanding.

[0093] FIG. 17 shows a cutaway view of only a portion of the bus bar frame assembly 120 and insulating cover 140 shown in FIG. 16 where the rib 123 and the partition member 141 are located.

[0094] A pair of partition members 141 are formed corresponding to each of the ribs 123 included in the cell stack assembly 100 according to the fifth embodiment.

[0095] 16 and 17, the pair of partition members 141 are formed to protrude beyond the distance from the end of the rib 123 to the inside of the insulating cover 140.

[0096] However, the partition members 141 are spaced apart from the ribs 123 at a predetermined interval along the longitudinal direction of the bus bar frame 121, that is, in the X direction, so as not to come into contact with the ribs 123.

[0097] That is, one of a pair of partition members 141 corresponding to any one of the ribs 123 is spaced to the left of the rib 123, and the other partition member 141 is spaced to the right of the rib 123. In this case, it is preferable that the pair of partition members 141 are spaced apart by a predetermined distance wider than the thickness of the ribs 123.

[0098] Because the ribs 123 and the partition members 141 are not in complete contact with each other, the spaces between the bus bars 122 are not physically blocked. However, because the ribs 123 and the partition members 141 extend in symmetrical directions, a structural restriction on the movement of the metal protrusions D growing on the surfaces of the bus bars 122 can be imposed. That is, because the spaces between the ribs 123 and the partition members 141 are formed in a zigzag shape, the metal protrusions D cannot pass through smoothly.

[0099] In particular, in the cell stack assembly 100 according to the fifth embodiment, the metal protrusion D formed on the surface of any one of the bus bars 122 must be redirected once more than in the cell stack assemblies 100 according to the first and second embodiments before it can pass between the rib 123 and a pair of partition members 141. In other words, in the cell stack assembly 100 according to the fifth embodiment, it is more difficult for the metal protrusion D to pass over the rib 123 and reach another adjacent bus bar 122.

[0100] The partition wall member 141 included in the cell stack assembly 100 according to the fifth embodiment has a longer protruding length than that of the fourth embodiment. Therefore, the degree of bending of the space formed between the partition wall member 141 and the rib 123 is greater, which may improve the blocking effect of the metal protrusion D.

[0101] The present invention has been described in more detail above with reference to the drawings and embodiments, etc. However, the configurations shown in the drawings or embodiments in this specification are merely one embodiment of the present invention and do not represent all of the technical ideas of the present invention, and therefore, at the time of filing this application, there may be various equivalents and modifications that can replace them. [Explanation of symbols]

[0102] 10: (Prior Art) Cell Stack Assembly 20: (Conventional technology) Cell stack 21: (Prior Art) Cell 30: (Prior Art) Electrode Lead 40: (Prior Art) Busbar Frame 50: (Conventional technology) Busbar 60: (Conventional technology) Module frame 70: (Prior Art) End Plate 100: Cell stack assembly 110: Cell stack 111: Cell 111a: Electrode lead 120: Bus bar frame assembly 121: Busbar frame 122: Busbar 123: Rib 130: End plate 140: Insulating cover 141: Partition wall member 150:Module frame D: Metal protrusion

Claims

1. a cell stack including a plurality of cells each having an electrode lead; a bus bar frame assembly coupled to the cell stack, the bus bar frame including a plurality of bus bars electrically connected to electrode leads of the cell stack, a bus bar frame supporting the bus bars, and ribs extending between the bus bars; an insulating cover coupled to the bus bar frame so as to cover the bus bar frame assembly, The insulating cover includes a partition member formed at a position corresponding to a rib of the bus bar frame assembly.

2. 2. The cell stack assembly according to claim 1, wherein the ribs are arranged at predetermined intervals along the longitudinal direction of the bus bar frame and are formed to extend along the width direction of the bus bar frame.

3. The cell stack assembly according to claim 1 , wherein the partition member is formed to extend along the longitudinal direction of the rib so as to limit the space between any pair of adjacent bus bars.

4. The cell stack assembly according to claim 1 , wherein the partition members are formed in one-to-one correspondence with the respective ribs.

5. The cell stack assembly of claim 4 , wherein the partition members protrude by a distance from the ends of the ribs to the inside of the insulating cover.

6. The cell stack assembly according to claim 5 , wherein the partition members are spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

7. The partition member is formed at a position that coincides with the rib, The cell stack assembly according to claim 5 , wherein the partition member and the rib are joined to each other in contact with each other so as to separate the spaces between the bus bars.

8. The cell stack assembly according to claim 4 , wherein the partition members are formed to protrude by a distance equal to or greater than a distance from an end of the rib to an inner side of the insulating cover.

9. The cell stack assembly according to claim 8 , wherein the partition members are spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

10. The cell stack assembly according to claim 1 , wherein each of the ribs is formed so as to correspond to a pair of partition members.

11. The cell stack assembly according to claim 10 , wherein the pair of partition members are spaced apart from each other by a predetermined distance greater than the thickness of the rib.

12. The cell stack assembly of claim 10 , wherein the pair of partition members protrude from ends of the ribs to an inner side of the insulating cover by a distance apart.

13. The cell stack assembly according to claim 12 , wherein the pair of partition members are spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

14. The cell stack assembly according to claim 10 , wherein the pair of partition members are formed to protrude beyond a distance from the ends of the ribs to an inner side of the insulating cover.

15. The cell stack assembly according to claim 14 , wherein the pair of partition members are spaced apart from the ribs at a predetermined interval along the longitudinal direction of the bus bar frame so as not to come into contact with the ribs.

Images