Battery pack having excellent impact resistance

Abstract

The present invention relates to a battery pack having excellent impact resistance, and more particularly, to a battery pack comprising: a quadrilateral outer frame configured to define an accommodation space; the supporting frame is located on the inner side of the edge of one side of the outer frame in the length direction; a battery cell accommodated in the accommodating space; a BMU, one surface of which faces the upper surface of the support frame, the BMU being electrically connected to the battery cells; and a BMU cover including a cover plate on the other surface of the BMU, in which the support frame includes a first seating portion and a second seating portion thicker than the first seating portion.

Description

Technical Field

[0001] This application claims the benefit of priority to Korean Patent Application No. 2023-0018619, filed on February 13, 2023, the disclosure of which is incorporated herein by reference in its entirety.

[0002] The present invention relates to a battery pack having excellent impact resistance, and more particularly, to a battery pack having excellent impact resistance, the battery pack being configured such that the battery pack is prevented from being bent by an external force, thereby minimizing damage to a BMU. Background Art

[0003] With the development of alternative energy sources due to air pollution and energy depletion caused by the use of fossil fuels, the demand for secondary batteries that can store generated electrical energy has increased. Secondary batteries that can be charged and discharged are closely used in daily life. For example, secondary batteries are used in mobile devices, electric vehicles, and hybrid electric vehicles.

[0004] Due to the increase in the use of mobile devices, the increase in the complexity of mobile devices, and the development of electric vehicles, the required capacity of lithium secondary batteries used as energy sources for various electronic devices, which are inevitably used in modern society, has increased. In order to meet the needs of users, a plurality of battery cells are set in small devices, and a battery module including a plurality of battery cells electrically connected to each other or a battery pack including a plurality of battery modules is used in vehicles, etc.

[0005] Meanwhile, if the device is a tablet computer, a movable ultra-thin TV, or a portable notebook computer, although it is important to reduce the weight of the device, the device must have high impact resistance.

[0006] Figure 1 is an exploded perspective view of a conventional battery pack. Figure 1 As shown, the battery pack includes a battery cell 20, a protection circuit module 30 electrically connected to an electrode terminal tab extending from the battery cell, a protection circuit module cover 50 and a first pressing rib 40, which protrudes from a frame 10, in which a battery cell accommodating portion configured to accommodate the battery cell in a direction opposite to a battery receiving portion is formed, and the first pressing rib is configured to press the electrode terminal tab and the protection circuit module in a direction in which the electrode terminal tab and the protection circuit module face each other.

[0007] However, the conventional battery pack has a rectangular structure in which a plurality of battery cells are arranged side by side, and thus the battery pack may be easily bent by external force in a length direction.

[0008] (Prior art literature)

[0009] (Patent Document 1) Korean Patent Application Publication No. 2019-0048069 (May 9, 2019) Summary of the invention

[0010] Technical issues

[0011] The present invention has been made in view of the above problems, and an object of the present invention is to provide a battery pack having excellent impact resistance capable of preventing damage to a battery management unit that may occur due to bending of the battery pack caused by an external force (eg, external impact).

[0012] Another object of the present invention is to provide a battery pack that is easy to assemble while improving welding quality.

[0013] Technical Solution

[0014] In order to achieve the above-mentioned object, a battery pack according to the present invention comprises: a frame unit (100), comprising a quadrilateral outer frame (110) configured to define a receiving space (S); and a support frame (120) located on the inner side of an edge of one side of the outer frame (110) in the length direction; a battery cell (200), the battery cell being received in the receiving space (S); a BMU, one surface of the BMU facing an upper surface of the support frame (120), the BMU being electrically connected to the battery cell (200); and a BMU cover (400), the BMU cover comprising a cover plate (410) located on another surface of the BMU, wherein the frame unit further comprises: at least one first rib (140), the at least one first rib extending in the width direction, one side of the first rib being connected to the outer frame (110); and a second rib (150), the second rib being located along the edge of the support frame (120) in the length direction, the second rib being connected to the other side of the first rib (140), the second rib having a double rib structure.

[0015] Furthermore, in the battery pack according to the present invention, the support frame (120) may include: a first seating portion (121); and a second seating portion (122) which is thicker than the first seating portion (121).

[0016] Furthermore, in the battery pack according to the present invention, the first seating portion (121) may have a first opening (121a), and the terminal of the battery cell (200) may be seated on the first seating portion.

[0017] Furthermore, in the battery pack according to the present invention, the printed circuit board (310) of the BMU (300) may be seated on the second seating portion (122).

[0018] In addition, in the battery pack according to the present invention, a plurality of accommodating portions (130) may be formed on the upper surface of the support frame (120) along the length direction and / or the width direction, and the cover plate (410) may have a plurality of insertion portions configured to be inserted into the accommodating portions.

[0019] In addition, in the battery pack according to the present invention, the plurality of accommodating portions (130) may be first accommodating portions (131), the first accommodating portions comprising: a first accommodating plate (131a) arranged at an edge of one side of the supporting frame (120) in the width direction, the first accommodating plate being located at a position spaced a predetermined distance from an inner surface of an outer frame (110) having a certain height and having a first fastening hole (131a'); and a first connecting portion (131b) configured to connect the first accommodating plate (131a) and the outer frame (110) to each other, and the plurality of inserting portions (430) may be first inserting portions (431), the first inserting portions comprising: a first inserting plate (431a) extending in a vertical direction from an edge of one side of the cover plate (410) in the width direction; and a first hook (431b) formed on an inner surface of the first inserting plate (431a) and fastened to the first fastening hole (131a').

[0020] In addition, in the battery pack according to the present invention, one of the multiple accommodating portions (130) may be a second accommodating portion (132), which includes: a second accommodating plate (132a) arranged at an edge of one side of the supporting frame (120) in the length direction, the second accommodating plate being located at a position spaced a predetermined distance from an inner surface of an outer frame (110) having a certain height and having a second fastening hole (132a'); and a pair of second connecting portions (132b) configured to connect the second accommodating plate (132a) and the outer frame (110) to each other, and one of the multiple inserting portions (430) may be a second inserting portion (432), which includes: a second inserting plate (432a) extending from an edge of the cover plate (410) in the vertical direction; and a second hook (432b) formed on the inner surface of the second inserting plate (432a) and fastened to the second fastening hole (132a').

[0021] In addition, in the battery pack according to the present invention, one of the plurality of accommodating portions (130) may be a third accommodating portion (133), the third accommodating portion comprising: a third accommodating plate (133a) arranged at an edge of the other side of the supporting frame (120) in the width direction, the third accommodating plate being located at a position spaced a predetermined distance from an inner surface of an outer frame (110) having a certain height and having a third fastening hole (133a'); and a third connecting portion (133b) configured to connect the third accommodating plate (133a) and the outer frame (110) to each other, and one of the plurality of inserting portions (430) may be a third inserting portion (433), the third inserting portion comprising: a third inserting plate (433a) extending in a vertical direction from an edge of the other side of the cover plate (410) in the width direction; and a third hook (433b) formed on an inner surface of the third inserting plate (433a) and fastened to the third fastening hole (133a').

[0022] Furthermore, in the battery pack according to the present invention, the second rib (150) may have a mesh structure.

[0023] Furthermore, in the battery pack according to the present invention, the cap plate (410) may have third ribs (420) formed to intersect in the width direction and / or the length direction at its inner surface facing the other surface of the BMU (300).

[0024] Furthermore, in the battery pack according to the present invention, the cover plate (410) may have at least one second opening (411).

[0025] Beneficial Effects

[0026] As is apparent from the above description, the battery pack having excellent impact resistance according to the present invention has an advantage that the support frame where the electrode terminals, BMU and BMU cover are located has thickness variation, thereby preventing the thickness of the battery pack from increasing while minimizing bending in the length direction or width direction.

[0027] In addition, the battery pack with excellent impact resistance according to the present invention has the advantage that the support frame is provided with a plurality of accommodating portions formed in a length direction or a width direction, and the BMU cover is provided with insertion portions each inserted into a corresponding one of the accommodating portions, thereby protecting the BMU from external impact or bending phenomena.

[0028] In addition, the battery pack having excellent impact resistance according to the present invention has the advantage that the second ribs having a grid structure are positioned to be spaced a predetermined distance apart from each receiving portion to face the receiving portion, thereby minimizing the bending phenomenon at the interface between battery cells that are prone to length bending deformation.

[0029] In addition, the battery pack having excellent impact resistance according to the present invention has an advantage that the BMU cover is provided with a plurality of second openings, thereby improving the heat dissipation effect without interfering with devices mounted on the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an exploded perspective view of a conventional battery pack.

[0031] Figure 2 is a perspective view of a battery pack according to a preferred embodiment of the present invention when viewed from one direction.

[0032] Figure 3 yes Figure 2 An exploded perspective view of a battery pack is shown in FIG.

[0033] Figure 4 is a perspective view of a battery cell included in a battery pack according to the present invention.

[0034] Figure 5 is a perspective view of a frame unit included in a battery pack according to the present invention when viewed in one direction.

[0035] Figure 6 When looking in the other direction Figure 5 A perspective view of a frame unit is shown in FIG.

[0036] Figure 7 yes Figure 5 An enlarged perspective view of portion A of FIG.

[0037] Figure 8 yes Figure 5 An enlarged perspective view of portion B of FIG.

[0038] Fig. 9 yes Figure 5 An enlarged perspective view of portion C of FIG.

[0039] Fig.10 is a perspective view of a BMU cover included in a battery pack according to the present invention when viewed from above.

[0040] Fig.11 yes Fig.10 An inverted perspective view of the BMU cover is shown in FIG.

[0041] Fig.12 yes Fig.10 A front view of the BMU cover is shown in FIG.

[0042] Fig.13 yes Fig.11 An enlarged perspective view of portion A of FIG.

[0043] Fig.14 yes Fig.11An enlarged perspective view of portion B of FIG.

[0044] Fig.15 yes Fig.11 An enlarged perspective view of portion C of FIG. DETAILED DESCRIPTION

[0045] Now, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the preferred embodiments of the present invention. However, when describing the working principle of the preferred embodiments of the present invention in detail, when the known functions and configurations incorporated herein may obscure the subject matter of the present invention, the detailed description thereof will be omitted.

[0046] In addition, in all drawings, the same reference numerals will be used to represent parts that perform similar functions or operations. Throughout the specification, when a part is referred to as being connected to another part, not only can a part be directly connected to another part, but the part can also be indirectly connected to another part via other parts. In addition, unless otherwise specified, the inclusion of a specific element does not mean the exclusion of other elements, but means that these elements may also be included.

[0047] Furthermore, in the drawings, the X-axis direction is defined as a length direction, the Y-axis direction is defined as a width direction, and the Z-axis direction is defined as a height direction.

[0048] In addition, one surface and the other surface mean surfaces facing each other in the Z-axis direction, and one side surface and the other side surface mean side surfaces facing each other in the X-axis direction or the Y-axis direction.

[0049] Hereinafter, a battery pack having excellent impact resistance according to the present invention will be described with reference to the accompanying drawings.

[0050] The battery pack according to the present invention may be installed in a tablet computer, a notebook computer, or an ultra-thin TV, preferably in a tablet computer, but the present invention is not limited thereto.

[0051] Figure 2 is a perspective view of a battery pack according to a preferred embodiment of the present invention when viewed from one direction, Figure 3 yes Figure 2 An exploded perspective view of a battery pack is shown in FIG. Figure 4 is a perspective view of a battery cell included in a battery pack according to the present invention.

[0052] like Figures 2 to 4As shown, the battery pack according to the present invention may include a frame unit 100, a plurality of battery cells 200 accommodated in the frame unit 100, a BMU 300 electrically connected to the battery cells 200, a BMU cover 400 configured to protect the BMU 300, a first packaging member 500 located on one surface of the frame unit 100, and a second packaging member 600 located on another surface of the frame unit 100.

[0053] The frame unit 100 is configured to accommodate and fix the battery cells 200 , the BMU 300 , and the BMU cover 400 , and protect them from external impacts, and has a generally quadrilateral shape, which will be described below.

[0054] The individual battery cells 200 housed in the frame unit 100 are preferably soft-pack type battery cells, and the soft-pack type battery cells may include a battery cell shell 210, an electrode assembly (not shown) housed in the battery cell shell 210, and a pair of electrode terminals 220, one side of each electrode terminal 220 being connected to a tab bundle of the electrode assembly and the other side protruding outward from the battery cell shell 210.

[0055] Here, the battery cell case 210 may be composed of a first case and a second case, wherein a notch-shaped receiving portion configured to receive an electrode assembly (not shown) is formed in at least one of the first case and the second case. The battery cell case 210 is made of a laminate sheet including an outer resin layer, a metal layer, and an inner resin layer to form a receiving portion therein.

[0056] The outer resin layer located at the outermost side of the battery cell housing 210 may be made of a heat-resistant polymer exhibiting excellent tensile strength, moisture permeation resistance, and air permeation resistance to ensure heat resistance and chemical resistance while protecting the battery cell assembly. As an example, the outer resin layer may be made of nylon or polyethylene terephthalate, however, the present invention is not limited thereto.

[0057] The metal layer adjacent to the outer resin layer corresponds to a barrier layer configured to prevent external moisture or various gases from penetrating into the battery. An aluminum thin film that is lightweight and easily formable can be used as a preferred material for the metal layer.

[0058] The inner resin layer is arranged to be in direct contact with the electrode assembly, so the inner resin layer must exhibit high insulation performance and high electrolytic resistance. In addition, the inner resin layer must exhibit high sealing properties to tightly seal the battery cell housing with the outside, that is, the thermal bonding seal between the inner resin layers must exhibit excellent thermal bonding strength. The inner resin layer can be made of a material selected from polyolefin-based resins such as polypropylene, polyethylene, polyethylene acrylate or polybutylene, polyurethane resin and polyimide resin that exhibits excellent chemical resistance and high sealing properties. However, the present invention is not limited thereto, and polypropylene exhibiting excellent mechanical properties such as tensile strength, stiffness, surface hardness and impact resistance and excellent chemical resistance is most preferably used.

[0059] The electrode assembly (not shown) has a structure in which negative electrodes and positive electrodes are alternately stacked multiple times, and a separator is inserted between each negative electrode and a corresponding positive electrode, and the negative terminal and the positive terminal constituting a pair of electrode terminals 220 are electrically connected to the negative electrode tab and the positive electrode tab, respectively, and exposed to the outside of the battery cell housing 210.

[0060] More specifically, the electrode assembly may be: a jelly-roll type electrode assembly, configured to have a long sheet-shaped positive electrode and a long sheet-shaped negative electrode wound with a separator interposed between the long sheet-shaped positive electrode and the long sheet-shaped negative electrode; a stacked type electrode assembly, including unit battery cells each configured to have a structure in which a rectangular positive electrode and a rectangular negative electrode are stacked with a separator interposed between the rectangular positive electrode and the rectangular negative electrode; a stacked folding type electrode assembly, configured to have a structure in which a unit battery cell is wound using a long separator; or a stacked stacked type electrode assembly, configured to have a structure in which unit battery cells are stacked with a separator interposed therebetween and then attached to each other, however, the present invention is not limited thereto.

[0061] although Figure 2 and Figure 3 4 shows that three unit battery cells 200 are mounted in the frame unit 100, but the present invention is not limited thereto, and two unit battery cells or four or more unit battery cells 200 may be mounted in the frame unit.

[0062] A battery management unit (BMU) 300 configured to control the operation of the battery cell 200 includes a printed circuit board 310, a BMU cable 320, and a BMU connector 330. Specifically, the positive terminal and the negative terminal of the battery cell 200 are electrically / mechanically connected to the printed circuit board 310 that controls the power supplied to the device (not shown) through the cable 320 and the connector 330. The BMU is used to identify overcharge, overdischarge, or overcurrent and to prevent overheating or explosion caused thereby. Of course, it is obvious that an element (not shown) configured to maintain the charge and discharge voltage and / or current and prevent an overcharge state and / or an overdischarge state may be provided. The BMU 300 is a device known in the art, and therefore, a detailed description thereof will be omitted.

[0063] Next, the BMU cover 400 is configured to prevent damage to the BMU 300, and is disposed on one surface of the BMU 300, that is, on the upper surface of the BMU 300 when viewed in the figure. When the frame unit 100 is bent in the length direction (X-axis direction) or the width direction (Y-axis direction) due to various factors such as external force, the BMU 300 may also be bent, resulting in damage or failure of components constituting the BMU 300, and thus it is desirable to provide the BMU cover 400 to protect the BMU 300 from the external force.

[0064] The BMU cover 400 configured to perform the above functions is preferably wide enough to completely cover the BMU 300, and more preferably, is made of an insulating material to prevent short circuits. The BMU cover 400 will be described in detail later.

[0065] based on Figure 3 , the first packaging member 500 is installed to cover one surface of the frame unit 100, that is, the upper surface of the frame unit 100. The first packaging member is preferably made of a sheet large enough to cover the entire upper surface of the frame unit 100, and more preferably provided with a plurality of fixing portions 510 along its edge, the plurality of fixing portions 510 being formed as a part extending to the other surface of the frame unit 100, so that the first packaging member is not easy to fall off after being attached to the frame unit 100. In this case, the entire inner surface of the first packaging member 500 or the inner surface of each fixing portion 510 may be provided with an adhesive layer.

[0066] The second packaging member 600 is mounted on another surface of the frame unit 100 , ie, the lower surface of the frame unit 100 , and is made of a thin sheet having a size sufficient to cover the entire lower surface of the frame unit 100 . The second packaging member 600 may be the same material as the first packaging member 500 .

[0067] Preferably, the adhesive layer is formed on the inner surface of the second packaging member 600 , that is, the surface of the second packaging member adjacent to the lower surface of the frame unit 100 .

[0068] As described above, the first packaging member 500 and the second packaging member 600 are respectively located on the upper surface and the lower surface of the frame unit 100 to fix the frame unit 100, the battery cell 200, the BMU 300 and the BMU cover 400 to prevent them from moving and protect them from external impact. Of course, the penetration of foreign substances or moisture can also be prevented.

[0069] Figure 5 is a perspective view of a frame unit included in a battery pack according to the present invention when viewed in one direction, and Figure 6 When looking in the other direction Figure 5 A perspective view of a frame unit is shown in FIG.

[0070] The frame unit 100 according to the present invention includes an outer frame 110 , a support frame 120 , a plurality of accommodation parts 130 , a first rib 140 , and a second rib 150 .

[0071] The outer frame 110 is open in the middle to form a battery cell receiving space S and form the overall shape of the battery pack. The support frame 120 located inside one side edge of the outer frame 110 is a space where electrode terminals, BMU and BMU cover are placed, while preventing bending deformation in the length and width directions.

[0072] Here, the support frame 120 is preferably composed of a first seating portion 121 and a second seating portion 122 thicker than the first seating portion 121. More preferably, the electrode terminals of the battery cells 200 are seated on the first seating portion 121, and the printed circuit board 310 is seated on the second seating portion 122. More preferably, a first opening 121a is formed in the first seating portion 121.

[0073] The thicker the support frame 120 is, the less the support frame bends in the length direction or the width direction. However, in this case, the battery pack is also inevitably thickened, making it difficult to minimize the battery pack. On the contrary, in the present invention, the portion where the electrode terminal is not disposed is designed to be thicker, while the portion where the electrode terminal is disposed is designed to be relatively thin, which is very effective in preventing bending deformation while preventing the thickness of the battery pack from increasing.

[0074] In addition, since the terminals are individually placed on the concave first placement portion 121 while being spaced a predetermined distance from each other, it is possible to prevent the movement of the electrode terminals while helping to prevent short circuits between the terminals. In addition, since the electrode terminals are exposed to the outside through the first openings 121a of the first placement portion 121, it is convenient to weld with the printed circuit board 310, and it is easy to dissipate the heat generated during operation, which also helps to ensure safety.

[0075] certainly, Figure 5and Figure 6 The number and positions of the first seating portions 121 shown in FIG. 1 are not limited and may be changed based on the number and positions of the battery cells accommodated in the outer frame 110 .

[0076] A plurality of receiving portions 130 are provided on an upper surface of the support frame 120 in a length direction and / or a width direction, and may help increase the rigidity of the battery pack while fixing the BMU cover.

[0077] One side of the first rib 140 is connected to the outer frame 110, and the other side of the first rib 140 is connected to the support frame 120, more specifically, to the second rib 150. The first rib prevents bending deformation in the width direction while partitioning the battery cell receiving space S. The second rib 150 is configured to minimize bending in the length direction, which will be described in detail below.

[0078] Meanwhile, the BMU cable 320 and the BMU connector 330 need to protrude outside the outer frame 110 to be connected with a device (not shown), so a predetermined area, more specifically, the outer frame 110 is provided with a cutout portion 111 corresponding to a passage thereof.

[0079] Figure 7 yes Figure 5 An enlarged perspective view of part A of Figure 8 yes Figure 5 an enlarged perspective view of portion B of Fig. 9 yes Figure 5 An enlarged perspective view of portion C of FIG.

[0080] Will refer to Figures 5 to 9 The accommodation portion is described in detail.

[0081] The receiving portion 130 located on the upper surface of the supporting frame 120 may be composed of a total of four receiving portions, for example, one first receiving portion 131 , two second receiving portions 132 , and one third receiving portion 133 .

[0082] First, the first receiving portion 131 is provided at an edge of one side in the width direction of the supporting frame 120. The first receiving portion may include a first receiving plate 131a spaced a predetermined distance from the inner surface of the outer frame 110 having a predetermined height and having a first fastening hole 131a', and a first connecting portion 131b configured to connect the first receiving plate 131a and the outer frame 110 to each other (see Figure 7 ).

[0083] The two second receiving parts 132 are arranged to be spaced apart from each other at the edge of one side of the support frame 120 in the length direction, and the configurations of the second receiving parts 132 are identical to each other. Each second receiving part includes a second receiving plate 132a spaced apart from the inner surface of the outer frame 110 having a predetermined height by a predetermined distance and having a second fastening hole 132a', and a pair of second connecting parts 132b configured to connect the second receiving plate 132a and the outer frame 110 to each other. (See Figure 8 ).

[0084] In particular, the second accommodating portions 132 are located facing each other and are spaced apart from the second ribs 150 by a predetermined distance, and the second ribs 150 have a double rib structure. More preferably, in addition to the double rib structure, they also have a grid structure of multiple partition walls configured to connect the second accommodating portions to each other, thereby minimizing the bending deformation in the length direction that is prone to occur at the interface between the battery cells (i.e., near the first ribs 140).

[0085] The third receiving portion 133 is positioned to face the edge of the other side of the supporting frame 120 in the width direction, that is, the first receiving portion 131 .

[0086] The third receiving portion includes a third receiving plate 133a positioned a predetermined distance apart from the inner surface of the outer frame 110 having a predetermined height and having a third fastening hole 133a', and a third connection portion 133b configured to connect the third receiving plate 133a and the outer frame 110 to each other.

[0087] Fig.10 is a perspective view of a BMU cover included in a battery pack according to the present invention when viewed from above, Fig.11 yes Fig.10 An inverted perspective view of the BMU cover is shown in FIG. Fig.12 yes Fig.10 A front view of the BMU cover is shown in FIG. Fig.13 yes Fig.11 An enlarged perspective view of part A of Fig.14 yes Fig.11 an enlarged perspective view of portion B of Fig.15 yes Fig.11 An enlarged perspective view of portion C of FIG.

[0088] Will refer to Figures 10 to 15 The BMU cover 400 having a plurality of inserts is described in detail.

[0089] The BMU cover 400 is located above the support frame 120 , and the BMU cover 400 is substantially rectangular in shape and includes a cover plate 410 , a third rib 420 , and four insertion portions 430 .

[0090] First, the cover plate 410 is provided with at least one second opening 411 in a predetermined area thereof, and the second opening 411 is configured to improve the heat dissipation effect while preventing direct interference with components (not shown) mounted on the printed circuit board 310 even if the components protrude to a certain height. Therefore, the position and size of the second opening 411 can be changed based on the size and arrangement of the components on the printed circuit board 310.

[0091] The third rib 420 is provided on the inner surface of the cover plate 410, that is, the surface of the cover plate facing the other surface of the BMU 300, and is arranged to intersect in the width direction and / or the length direction to minimize the bending deformation in the width direction and the length direction. Of course, the third rib 420 can also perform the function of pressing the printed circuit board 310 to prevent it from moving.

[0092] The four insertion parts 430 may be composed of one first insertion part 431 , two second insertion parts 432 , and one third insertion part 433 .

[0093] First, the first insertion portion 431 is inserted into the first receiving portion 131 of the support frame 120. Specifically, the first insertion portion includes a first insertion plate 431a extending in a vertical direction from an edge of one side of the cover plate 410 in a width direction and a first hook 431b formed on an inner surface of the first insertion plate 431a and fastened to the first fastening hole 131a'.

[0094] Each second insertion portion 432 is inserted into a corresponding one of the second receiving portions 132 of the support frame 120, and includes a second insertion plate 432a extending in a vertical direction from an edge of the cover plate 410 and a second hook 432b formed on an inner surface of the second insertion plate 432a and fastened to the second fastening hole 132a'. Of course, the configurations of the two second insertion portions 432 are identical to each other.

[0095] The third insertion portion 433 is inserted into the third accommodating portion 133 of the supporting frame 120, and may include a third insertion plate 433a extending in a vertical direction from an edge of the other side of the cover plate 410 in the width direction, and a third hook 433b formed on an inner surface of the third insertion plate 433a and fastened to a third fastening hole 133a'.

[0096] Meanwhile, the first insertion plate 431a, the second insertion plate 432a, and the third insertion plate 433a constituting the respective insertion parts may be connected or provided to the third rib 420 provided along the edge of the cover plate 410 to prevent bending deformation in the length direction and the width direction.

[0097] Those skilled in the art to which the present invention pertains will appreciate that, based on the above description, various applications and modifications are possible within the scope of the present invention.

[0098] (Explanation of Reference Numerals)

[0099] 100: frame unit

[0100] 110: Outer frame 111: Cutout

[0101] 120: Support frame

[0102] 121: first placement portion 121a: first opening

[0103] 122: Second Resettlement Department

[0104] 130: Accommodation

[0105] 131: First accommodation portion

[0106] 131a: first receiving plate 131a': first fastening hole

[0107] 131b: First connection part

[0108] 132: Second accommodating portion

[0109] 132a: second receiving plate 132a': second fastening hole

[0110] 132b: Second connection portion

[0111] 133: Third accommodating portion

[0112] 133a: third receiving plate 133a': third fastening hole

[0113] 133b: Third connection part

[0114] 140: First rib

[0115] 150: Second rib

[0116] 200: Battery cells

[0117] 210: Battery cell housing 220: Electrode terminal

[0118] 300: BMU

[0119] 310: Printed circuit board 320: BMU cable

[0120] 330: BMU connector

[0121] 400: BMU cover

[0122] 410: Cover plate 411: Second opening

[0123] 420: Third rib

[0124] 430: Insertion

[0125] 431: First insertion part

[0126] 431a: first insertion plate 431b: first hook

[0127] 432: Second insertion part

[0128] 432a: second insertion plate 432b: second hook

[0129] 433: Third insertion part

[0130] 433a: third insertion plate 433b: second hook

[0131] 500: first packaging component

[0132] 510: Fixed part

[0133] 600: Second packaging component

[0134] S: Accommodation space

Claims

1. A battery pack comprising: A frame unit including a quadrilateral outer frame configured to define a receiving space; and a supporting frame located on the inner side of an edge of one side of the outer frame in the length direction; a battery cell, the battery cell being accommodated in the accommodation space; A BMU, one surface of the BMU faces the upper surface of the support frame, and the BMU is electrically connected to the battery cell; as well as A BMU cover, the BMU cover comprising a cover plate located on another surface of the BMU, wherein: The framework unit also includes: at least one first rib extending in a width direction, one side of the first rib being connected to the outer frame; and The second rib is located along an edge of the supporting frame in the length direction, the second rib is connected to the other side of the first rib, and the second rib has a double rib structure.

2. The battery pack according to claim 1, wherein: The support frame comprises: First Placement Department; and The second seating portion is thicker than the first seating portion.

3. The battery pack according to claim 2, wherein: The first seating portion has a first opening, and The terminal of the battery cell is seated on the first seating portion.

4. The battery pack according to claim 3, wherein: The printed circuit board of the BMU is mounted on the second mounting portion.

5. The battery pack according to claim 1, wherein: A plurality of receiving portions are formed on the upper surface of the support frame along the length direction and / or the width direction, and The cover plate has a plurality of insertion portions configured to be inserted into the accommodation portions.

6. The battery pack according to claim 5, wherein: One of the plurality of accommodating portions is a first accommodating portion, the first accommodating portion comprising: a first accommodating plate provided at an edge of one side of the supporting frame in the width direction, the first accommodating plate being located at a position spaced a predetermined distance from an inner surface of the outer frame having a certain height and having a first fastening hole; and a first connecting portion configured to connect the first accommodating plate and the outer frame to each other, and One of the multiple insertion parts is a first insertion part, which includes: a first insertion plate extending in a vertical direction from an edge of the cover plate on one side in the width direction; and a first hook formed on an inner surface of the first insertion plate and fastened to the first fastening hole.

7. The battery pack according to claim 6, wherein: One of the plurality of accommodating portions is a second accommodating portion, the second accommodating portion comprising: a second accommodating plate provided at an edge of one side in the length direction of the supporting frame, the second accommodating plate being located at a position spaced a predetermined distance from the inner surface of the outer frame having a certain height and having a second fastening hole; and a pair of second connecting portions configured to connect the second accommodating plate and the outer frame to each other, and One of the plurality of insertion portions is a second insertion portion, and the second insertion portion includes: a second insertion plate extending from the edge of the cover plate in a vertical direction; and a second hook formed on an inner surface of the second insertion plate and fastened to the second fastening hole.

8. The battery pack according to claim 6, wherein: One of the plurality of accommodating portions is a third accommodating portion, the third accommodating portion comprising: a third accommodating plate provided at an edge of the other side in the width direction of the supporting frame, the third accommodating plate being located at a position spaced a predetermined distance from the inner surface of the outer frame having a certain height and having a third fastening hole; and a third connecting portion configured to connect the third accommodating plate and the outer frame to each other, and One of the multiple insertion parts is a third insertion part, which includes: a third insertion plate extending in a vertical direction from an edge of the cover plate on the other side of the width direction; and a third hook formed on the inner surface of the third insertion plate and fastened to the third fastening hole.

9. The battery pack according to claim 1, wherein: The second rib has a grid structure.

10. The battery pack according to claim 1, wherein: The cover plate has, on an inner surface thereof facing the other surface of the BMU, third ribs formed to intersect in the width direction and / or the length direction.

11. The battery pack according to claim 10, wherein: The cover plate has at least one second opening.

Images