Battery pack

Abstract

A rechargeable battery pack is provided. The rechargeable battery pack includes a holder having an accommodation space therein, a plurality of unit battery cells in the accommodation space, a connection tab electrically connecting the plurality of unit battery cells at an upper portion of the holder, a bus bar including a connector electrically connected to the connection tab and extending to the upper portion of the holder, a BMS circuit electrically connected to the connector; and a support between the connector and the BMS circuit and supporting the BMS circuit on an upper surface of the holder. Accordingly, the present disclosure provides a rechargeable battery pack capable of stably supporting and electrically connecting a BMS circuit even if a connection portion between a bus bar and the BMS circuit is not horizontal.

Description

Technical Field

[0001] This disclosure relates to a rechargeable battery pack. Background Technology

[0002] Rechargeable batteries, which can be charged and discharged, are already widely used as power sources for wireless mobile devices. In addition, rechargeable batteries have attracted considerable attention as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs), which have been developed to address problems such as air pollution caused by existing gasoline and diesel vehicles that use fossil fuels.

[0003] If such batteries are alternately charged and discharged, then battery management typically involves controlling the charging and discharging of the battery to maintain proper operating conditions and performance.

[0004] For this purpose, a battery management system (BMS) is used to manage the state and performance of the battery. The BMS manages the battery by measuring its current, voltage, or temperature and recording it in its memory.

[0005] The BMS connects to the batteries in the rechargeable battery pack via busbars and manages the battery status and performance.

[0006] However, if the connection between the busbar and the BMS cannot be kept horizontal, a reliable electrical connection is difficult to achieve, which reduces durability. Utility Model Content

[0007] The purpose of this invention is to provide a rechargeable battery pack that can stably support and electrically connect to the BMS circuit even if the connection between the busbar and the BMS circuit is not horizontal.

[0008] The embodiment includes a rechargeable battery pack comprising a retainer having a receiving space therein, a plurality of individual battery cells in the receiving space, a connecting tab electrically connecting the plurality of individual battery cells at the upper part of the retainer, a busbar including a connector electrically connected to the connecting tab and extending to the upper part of the retainer, a BMS circuit electrically connected to the connector, and a support between the connector and the BMS circuit and supporting the BMS circuit on the upper surface of the retainer.

[0009] The retainer may include: a first retainer including a plurality of receiving spaces for accommodating portions of a single battery cell and a first connecting tab at the lower part of the retainer; and a second retainer including a plurality of receiving spaces for accommodating other portions of a plurality of single battery cells and a second connecting tab at the upper part of the retainer.

[0010] The busbar may include: a busbar plate extending from the side surface of the second retainer along a first direction and secured by a fastening member; a connecting protrusion protruding from the edge of the busbar plate, extending toward the upper part of the second retainer and electrically connected to the first connecting piece; and a connector protruding from the edge of the busbar plate, extending toward the upper part of the second retainer and electrically connected to the BMS circuit.

[0011] The support may include a circular slider on the lower surface that supports the BMS circuitry.

[0012] The slider may have a smooth surface supported by the upper side of the connector on its first side surface, and a flat surface supported by the lower surface of the BMS circuit on a second side surface facing the first side surface or opposite to the first side surface.

[0013] The support protrusions supporting the connector can protrude from the upper surface of the retainer.

[0014] The smooth support for the connector can be located on the upper part of the support protrusion.

[0015] The smooth support may include: a smooth portion located on the upper part of the support protrusion and having a smooth surface thereon; and a pair of fasteners bent in the transverse direction of the connector on opposite sides of the smooth portion.

[0016] A pair of fasteners can be located inside the side surface of the smooth portion.

[0017] The support may also include a fixing portion mounted on the connector of the busbar, a portion of which is fixed to the BMS circuit.

[0018] The fixing part may include a support plate on the surface of the connector of the busbar, and an insertion protrusion that protrudes from the edge of the support plate and inserts into and fixes to the BMS circuit.

[0019] The fastening member can pass through the fastening hole in the circular slider, the first through hole through which the fastening member passes can be on the connector, and the second through hole through which the fastening member passes can be on the support plate.

[0020] The groove can be on the upper surface of the smooth support, and the end of the fastening member can be inserted into the groove.

[0021] The tapered surface can contact the smooth portion of the support protrusion at the edge of the through hole. Attached Figure Description

[0022] Features will become apparent to those skilled in the art from a detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0023] Figure 1This is an exploded perspective view schematically illustrating the main parts of a rechargeable battery pack according to one or more embodiments of the present disclosure;

[0024] Figure 2 This is a perspective view schematically showing the main portions of the support protrusion and smooth support member of the connector that protrudes from the upper side of the retainer to support the busbar according to one or more embodiments of the present disclosure;

[0025] Figure 3 This is a perspective view schematically showing the main portion of a support member mounted on the connector upper side of a busbar according to one or more embodiments of the present disclosure;

[0026] Figure 4 This schematically illustrates an installation according to one or more embodiments of the present disclosure. Figure 3 Side view of the support on the upper side of the connector of the busbar;

[0027] Figure 5 This is a schematic cross-sectional view of the connector and main parts of the BMS circuit of the busbar electrically connected by a support member according to one or more embodiments of the present disclosure;

[0028] Figure 6 This is a schematic diagram illustrating the main portion of an insertion protrusion of a support member inserted into and secured to a BMS circuit according to one or more embodiments of the present disclosure; and

[0029] Figure 7 This is a schematic cross-sectional view of the main portion of a support member mounted on the upper side of a connector of a busbar according to one or more embodiments of the present disclosure. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully below with reference to the accompanying drawings; however, they may be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey exemplary implementation to those skilled in the art to which this disclosure pertains.

[0031] In the accompanying drawings, the dimensions of layers and regions may be exaggerated for clarity. It will be understood that if a layer or element is referred to as "on" another layer or substrate, it may be directly on said other layer or substrate, or there may be intervening layers. Furthermore, it will be understood that if a layer is referred to as "below" another layer, it may be directly below said other layer, or there may be one or more intervening layers. Additionally, it will be understood that if a layer is referred to as "between two layers," it may be the only layer between said two layers, or there may be one or more intervening layers.

[0032] As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the scope of this disclosure. The drawings and description are to be considered illustrative in nature and not restrictive, and the same reference numerals denote the same elements throughout the specification.

[0033] Figure 1 This is an exploded perspective view schematically illustrating a rechargeable battery pack according to one or more embodiments of the present disclosure.

[0034] like Figure 1 As shown, a rechargeable battery pack 100 according to one or more embodiments of the present disclosure may include: a retainer 10 having a plurality of receiving spaces 11a, 13a; a plurality of individual battery cells 12 in the plurality of receiving spaces 11a, 13a; a connecting tab 20 electrically connecting the plurality of individual battery cells 12 at the upper portion of the retainer 10; a busbar 30 including a connector 35 electrically connected to the connecting tab 20 and extending to the upper portion of the retainer 10 (e.g., a second retainer 13); a BMS circuit 60 also on the upper portion of the retainer 10 and electrically connected to the connector 35; and a support 50 compensating for the slope between the lower surface of the BMS circuit 60 and the upper surface of the connector 35 to provide horizontal support relative to the upper surface of the retainer 10 (e.g., ...). Figure 1 (x / y plane) BMS circuit 60.

[0035] The retainer 10 may have multiple receiving spaces 11a, 13a therein, so that multiple cell battery cells 12 can be received therein.

[0036] The receiving spaces 11a and 13a are multiple inside the holder 10 and can be arranged in multiple rows and columns relative to the entire area of ​​the holder 10, so that multiple cell battery cells 12 can be inserted into the holder 10 in multiple rows and columns.

[0037] The retainer 10 may include a first retainer 11 and a second retainer 13 that accommodate a plurality of individual battery cells 12.

[0038] The first retainer 11 may have a plurality of first receiving spaces 11a therein, in which a portion of a plurality of individual battery cells 12 are received.

[0039] The first holder 11 may have multiple rows and columns of first receiving space 11a, so that a portion of a plurality of cell 12 can be received therein.

[0040] The second holder 13 may be located on the upper part of the first holder 11, and multiple second receiving spaces 13a for accommodating multiple cell battery units 12 together with the first holder 11 may be located in the second holder 13.

[0041] In the second holder 13, the second receiving space 13a can be arranged in multiple rows and columns, so that a portion of a plurality of cell battery cells 12 can be accommodated therein.

[0042] The connecting piece 20 can be installed on the first retainer 11 and the second retainer 13.

[0043] The connecting tab 20 may include a plurality of first connecting tabs 21 electrically connecting the lower parts of a plurality of individual battery cells 12 at the lower part of the retainer 10, and a plurality of second connecting tabs 23 electrically connecting the upper parts of a plurality of individual battery cells 12 at the upper part of the retainer 10.

[0044] Multiple first connecting tabs 21 may include a first tab plate 21a on the lower part of the first retainer 11, and multiple first tab protrusions 21b protruding from the edge of the first tab plate 21a to be electrically connected to multiple cell battery cells 12.

[0045] The first terminal plate 21a may be a plurality of first terminal plates spaced apart from each other and fixed to the lower part of the first retainer 11, and may be electrically connected to a portion of a plurality of cell battery cells 12 at the lower part of the first retainer 11. A plurality of first terminal protrusions 21b may protrude from the edge of the first terminal plate 21a.

[0046] Multiple first terminal protrusions 21b can protrude along the edge of the first terminal plate 21a and be electrically connected to multiple cell battery cells 12.

[0047] Multiple first terminal protrusions 21b can protrude from opposite sides of the first terminal plate 21a, or from any edge position, depending on the arrangement position of the first terminal plate 21a.

[0048] The second connecting piece 23 can be mounted on the upper part of the second retainer 13 to electrically connect multiple cell battery units 12.

[0049] The second connecting tab 23 may include a plurality of second tab plates 23a on the upper part of the second retainer 13, and a plurality of second tab protrusions 23b protruding from the edge of the second tab plate 23a to be electrically connected to a plurality of cell battery cells 12.

[0050] Multiple second terminal plates 23a may be spaced apart from each other and fixed to the upper part of the second retainer 13, and may be electrically connected to a portion of the multiple cell battery cells 12 at the lower part of the second retainer 13. Multiple second terminal protrusions 23b may protrude from the edges of the second terminal plates 23a.

[0051] The second terminal plate 23a may be a plurality of terminal plates spaced apart from each other and fixed to the upper part of the second retainer 13, and may be electrically connected to a portion of a plurality of individual battery cells 12 on the upper part of the second retainer 13. A plurality of second terminal protrusions 23b may protrude from the edge of the second terminal plate 23a.

[0052] Multiple second terminal protrusions 23b may protrude along the edge of the second terminal plate 23a and be electrically connected to the cell 12.

[0053] Multiple second terminal protrusions 23b can protrude on opposite sides of the second terminal plate 23a, or at the edge of either side, depending on the arrangement position of the second terminal plate 23a.

[0054] The first connecting piece 21 and the second connecting piece 23 can be respectively mounted on the first retainer 11 and the second retainer 13 to electrically connect the multiple battery cells 12 to each other.

[0055] It may include a busbar 30 containing a connector 35, which is electrically connected to the connecting lug 20 and extends to the upper part of the retainer 10.

[0056] Busbar 30 can be mounted on the first retainer 11 and the second retainer 13 respectively, thereby electrically connecting the BMS circuit 60 and the multiple unit connection pieces 12.

[0057] For example, the busbar 30 may include a busbar plate 31 and a connector 35. The busbar plate 31 extends from the side surface of the retainer along a first direction and is secured by a fastening member. The connector 35 protrudes from the edge of the busbar plate 31, extends toward the upper part of the retainer 10, and is electrically connected to the BMS circuit 60.

[0058] Busbar 31 can be along a first direction (e.g., Figure 1 It is mounted on the side of the retainer 10, which includes the first retainer 11 or the second retainer 13, extending in the x-axis direction.

[0059] The connecting protrusion 33 of the busbar 31, which protrudes from the edge of the side surface of the retainer 10 along the first direction, can be electrically connected to the connecting lug 20.

[0060] The connecting protrusion 33 can extend from the edge of the busbar 31 to the location of the connecting piece 20, and can be electrically connected to the connecting piece 20 by a fastening member 15 (such as a bolt).

[0061] In order to stably fix the busbar 31 to the side surface of the retainer 10 and stably connect it to the connecting piece 20, a plurality of connecting protrusions 33 may protrude.

[0062] Connector 35 can be connected to BMS circuit 60 and can protrude from busbar 31.

[0063] One side of connector 35 can be connected to the edge of busbar 31, and the other side of connector 35 can extend upward in the retainer 10 to be electrically connected to BMS circuit 60.

[0064] Connector 35 can be fastened via fastening member 15 (see example) Figure 3 It is electrically connected to the BMS circuit 60 and inserted between the BMS circuit 60 and the upper part of the holder 10.

[0065] The lower part of connector 35 can be supported on the support protrusion 42 on the upper side of retainer 10.

[0066] Figure 2 This is a perspective view schematically showing the main portion of a support protrusion and a smooth support member of a connector that protrudes from the upper side of the retainer to support the busbar, according to one or more embodiments of the present disclosure.

[0067] like Figure 2 As shown, the support protrusion 42 can be a columnar protrusion on the upper side of the second retainer 13, so that the connector 35 can be supported while being spaced apart from the upper surface of the second retainer 13. The support protrusion 42 is not limited to a cylindrical shape, and can instead be a polygonal prism shape, etc.

[0068] The smooth support 40 can be inserted into the upper part of the support protrusion 42.

[0069] The smooth support 40 supports the flat lower surface of the connector 35 of the busbar 30 and can be inserted into the support protrusion 42, thereby providing stable support in response to the mounting slope of the connector 35.

[0070] For example, the smooth support 40 may include a smooth portion 41 on the upper part of the support protrusion 42 and having a smooth surface on the upper part, and on opposite sides of the smooth portion 41 in the lateral direction of the connector 35 (e.g., Figure 1 A pair of fasteners 43 are bent along the y-axis and inserted into the side surface of the support protrusion 42.

[0071] The smooth portion 41 can protrude from the upper part of the support protrusion 42, and the smooth surface can be on the upper surface.

[0072] The smooth portion 41 may have a smooth surface on the lower surface of the connector 35 supporting the busbar 30, and the upper surface may have a smooth shape with a certain curvature, thereby allowing stable support corresponding to the mounting slope of the connector 35. The groove 41a into which the end of the fastening member 15 is inserted may be in the smooth portion 41.

[0073] Each of the pair of fasteners 43 can be bent on opposite sides of the smooth portion 41.

[0074] The pair of fasteners 43 can also be bent in the lateral direction of the support protrusion 42 on opposite sides of the smooth portion 41, and can be pressed and fixed while being inserted into opposite sides of the support protrusion 42 during the process of fixing the smooth support 40 to the upper part of the support protrusion 42.

[0075] A pair of fasteners 43 can also be inserted into the interior of the side surface of the support protrusion 42. That is, the insertion grooves (not shown) into which the fasteners 43 can be inserted can be on opposite sides of the support protrusion 42.

[0076] Therefore, a pair of fasteners 43 can be fitted with insertion grooves that insert into the interior of the side surface of the support protrusion 42, which prevents the fasteners 43 from interfering with adjacent components and allows for stable installation.

[0077] The connector 35 can be tilted to be inserted between the BMS circuit 60 and the retainer 10. For a stable connection between the connector 35 and the BMS circuit 60, a support 50 can be installed between the BMS circuit 60 and the retainer 10. A first through-hole 35a for securing the fastening member 15 can be located in the connector 35.

[0078] The support 50 can be inserted between the connector 35 and the BMS circuit 60 so that if the connector 35 and the BMS circuit 60 have different mounting tilts, the BMS circuit 60 can be stably supported in the upper position of the retainer 10, while allowing a reliable electrical connection between the busbar 30 and the BMS circuit 60.

[0079] Figure 3 This is a perspective view schematically showing the main portion of a support member mounted on the connector side of a busbar according to one or more embodiments of the present disclosure. Figure 4 This schematically illustrates an installation according to one or more embodiments of the present disclosure. Figure 3 Side view of the support on the upper side of the connector of the busbar. Figure 5The diagram schematically illustrates a cross-sectional view of the connector of a busbar electrically connected via a support member and the main portions of the BMS circuit according to one or more embodiments of the present disclosure. Figure 6 This is a schematic diagram illustrating the main portion of an insertion protrusion of a support member inserted into and secured to a BMS circuit according to one or more embodiments of the present disclosure.

[0080] refer to Figures 3 to 6 To describe the support 50 more specifically, the support 50 may include a fixing portion 51 disposed on the connector 35 of the busbar 30, a portion of which is fixed to the BMS circuit, and a circular slider 53 disposed on the fixing portion 51 and supporting the lower surface of the BMS circuit 60.

[0081] The fixing part 51 can be located on the upper surface of the connector 35 of the busbar 30 and at least partially fixed in the BMS circuit 60.

[0082] The fixing portion 51 may include a support plate 51a on the surface of the connector 35 of the busbar 30, and an insertion protrusion 51b that protrudes from the edge of the support plate 51a and is inserted into and fixed to the BMS circuit 60.

[0083] The support plate 51a may include a flat surface on its lower surface that contacts the upper surface of the connector 35. A second through hole 51c may be provided in the support plate 51a for the fastening member 15 to pass through.

[0084] The support plate 51a may have a generally rectangular or square planar shape, and the insertion protrusion 51b may protrude from the edge.

[0085] Multiple insertion protrusions 51b may protrude from the edge of the support plate 51a and may be inserted into the BMS circuit 60. The insertion protrusions 51b may protrude in the shape of pins at each of the four corners of the square planar shape of the support plate 51a and may be inserted into and secured to the BMS circuit 60.

[0086] The circular slider 53 can be placed on the upper part of the support plate 51a.

[0087] Although the inclination of the connector 35 of the busbar 30 changes, the circular slider 53 can be in a horizontal state when it is on the upper part of the support plate 51a (e.g., in...). Figure 3 The BMS circuit 60 is stably supported in the x / y plane.

[0088] For example, the circular slider 53 may have a smooth surface 53a on a first side surface supported on the surface of the support plate 51a, and a second side surface opposite to the first side surface may be supported on the lower surface of the BMS circuit 60.

[0089] In other words, the first side surface of the circular slider 53 may have a smooth surface 53a that contacts the support plate 51a, and the second side surface facing the first side surface or opposite to the first side surface may have a flat surface 53b that contacts the surface of the BMS circuit 60.

[0090] The circular slider 53 can be positioned between the BMS circuit 60 and the support plate 51a, but the portion of the smooth surface 53a that contacts the support plate 51a can be adjusted according to the slope of the installed connector 35, thereby stably supporting the BMS circuit 60 in a horizontal state.

[0091] The fastening member 15 can pass through the fastening hole 53c it is connected to in the circular slider 53.

[0092] Therefore, the fastening member 15 can be engaged with the fastening hole 53c of the circular slider 53, such that a portion of the fastening member 15 passes through the first through hole 35a of the connector 35 and the second through hole 51c of the support plate 51a, thereby fixing the circular slider 53 to the upper side of the connector 35. The end of the fastening member 15 can be inserted into the groove 41a in the smooth portion 41.

[0093] Therefore, the fastening member 15 can stably connect the connector 35 of the busbar 30 located between the retainer 10 and the BMS circuit 60 by passing through the fastening hole 53c, the first through hole 35a and the second through hole 51c, and stably support the BMS circuit 60 in a horizontal state.

[0094] As described above, the rechargeable battery pack 100 of this embodiment may have a busbar 30 in an inclined state, which electrically connects the connecting tab 20 mounted on the holder 10 and the BMS circuit 60 via a support member 50, thereby stably supporting the BMS circuit 60 on the upper side of the holder 10 in a horizontal state. Therefore, the BMS circuit 60 and the busbar 30 can be stably electrically connected via the support member 50, thereby improving durability.

[0095] Figure 7 This is a schematic cross-sectional view showing the main portion of a support 50 mounted on the upper side of a connector of a busbar according to one or more embodiments of the present disclosure. Figures 1 to 6 In the accompanying drawings, the same reference numerals indicate the same or similar components having the same or similar functions. Detailed descriptions of the same reference numerals will be omitted below.

[0096] like Figure 7 As shown, according to one or more embodiments of this disclosure, the tapered surface 35b may be located at the edge of the first through-hole 35a at the connector 35 of the busbar 30.

[0097] If the connector 35 is positioned on the smooth portion 41 at the upper part of the support protrusion 42, the tapered surface 35b can increase the area of ​​the first through hole 35a of the connector 35 in contact with the smooth portion 41.

[0098] Therefore, the connector 35 is positioned on the rounded portion 41 with a larger contact area, thus enabling more stable placement.

[0099] This disclosure provides a rechargeable battery pack that can stably support and electrically connect to the BMS circuit even when the connection between the busbar and the BMS circuit is not horizontal. The busbar, which is electrically connected to the BMS circuit in an inclined state, can be stably supported at the top of the holder by a support member, thereby allowing the BMS circuit to be supported horizontally at the top of the holder. Therefore, the BMS circuit and the busbar can be stably electrically connected in a horizontal state via the support member, thereby improving durability.

[0100] While this disclosure has been described in conjunction with what is now considered to be actual embodiments, it will be understood that the disclosure is not limited to the disclosed embodiments, but rather is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

[0101] Example embodiments have been disclosed herein, and although specific terminology has been used, it is used and will be interpreted in its ordinary and descriptive sense only, and not for limiting purposes. In some instances, as will be apparent to those skilled in the art upon filing this application, unless specifically instructed otherwise, features, characteristics, and / or elements described in connection with particular embodiments may be used alone or in combination with features, characteristics, and / or elements described in connection with other embodiments. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

[0102] <Description of reference numerals in the attached figures>

[0103] 10: Holder

[0104] 11: First Holder

[0105] 11a: First containment space

[0106] 12: Single cell

[0107] 13: Second Holder

[0108] 13a: Second containment space

[0109] 20: Connect the connector

[0110] 21: First connecting piece

[0111] 21a: First terminal block

[0112] 21b: First connector protrusion

[0113] 23: Second connecting piece

[0114] 23a: Second terminal block

[0115] 23b: Second connector protrusion

[0116] 30: Busbar

[0117] 31: Busbar

[0118] 33: Connecting protrusion

[0119] 35: Connector

[0120] 35a: First through hole

[0121] 35b: Conical surface

[0122] 40: Smooth support component

[0123] 41: Smooth Part

[0124] 42: Support protrusion

[0125] 43: Fasteners

[0126] 50: Support component

[0127] 51: Fixed part

[0128] 51a: Support plate

[0129] 51b: Insertion protrusion

[0130] 51c: Second through hole

[0131] 53: Circular slider

[0132] 53a: Smooth surface

[0133] 53b: Flat surface

[0134] 60: BMS circuit.

Claims

1. A rechargeable battery pack, characterized in that, The rechargeable battery pack includes: A retainer having a receiving space; Multiple individual battery cells are inserted into the receiving space; Connect the connecting tabs to electrically connect the multiple individual battery cells at the upper part of the retainer; Busbar, including a connector electrically connected to the connecting lugs and extending to the upper portion of the retainer; BMS circuitry, electrically connected to the connector; and A support is provided between the connector and the BMS circuit, and the BMS circuit is supported on the upper surface of the retainer.

2. The rechargeable battery pack according to claim 1, characterized in that, The retainer includes: The first retainer includes multiple receiving spaces for accommodating the plurality of individual battery cells and a first connecting tab at the lower part of the first retainer; and The second retainer includes multiple receiving spaces for accommodating other parts of the cell and a second connecting tab at the upper part of the second retainer.

3. The rechargeable battery pack according to claim 2, characterized in that, The busbar includes: A busbar extends from the side surface of the second retainer along a first direction and is secured by a fastening member; A connecting protrusion extends from the edge of the busbar plate toward the upper part of the second retainer and is electrically connected to the first connecting piece; and The connector protrudes from the edge of the busbar, extends toward the upper part of the second retainer, and is electrically connected to the BMS circuit.

4. The rechargeable battery pack according to claim 1, characterized in that, The support includes a circular slider that supports the lower surface of the BMS circuit.

5. The rechargeable battery pack according to claim 4, characterized in that, The circular slider has a smooth surface supported by the upper side of the connector on a first side surface of the circular slider, and a flat surface supported by the lower surface of the BMS circuit on a second side surface facing the first side surface.

6. The rechargeable battery pack according to claim 4, characterized in that, A support protrusion supporting the connector protrudes from the upper surface of the retainer.

7. The rechargeable battery pack according to claim 6, characterized in that, A smooth support member supporting the connector is located on the upper part of the support protrusion.

8. The rechargeable battery pack according to claim 7, characterized in that, The smooth support component includes: A smooth portion is located on the upper part of the supporting protrusion, and the upper part of the smooth portion has a smooth surface; and A pair of fasteners, bent in the lateral direction of the connector on opposite sides of the smooth portion.

9. The rechargeable battery pack according to claim 8, characterized in that, The pair of fasteners are located inside the side surface of the smooth portion.

10. The rechargeable battery pack according to claim 8, characterized in that, The support also includes a fixing portion mounted on the connector of the busbar, a portion of which is fixed to the BMS circuit.

11. The rechargeable battery pack according to claim 10, characterized in that, The fixed portion includes: A support plate on the surface of the connector of the busbar; and An insertion protrusion protrudes from the edge of the support plate and is inserted into and secured to the BMS circuit.

12. The rechargeable battery pack according to claim 11, characterized in that, A fastening hole is provided in the circular slider, a fastening member passes through the fastening hole and engages, a first through hole through which the fastening member passes on the connector, and a second through hole through which the fastening member passes on the support plate.

13. The rechargeable battery pack according to claim 12, characterized in that, The groove is located on the upper surface of the smooth support member, and the end of the fastening member is inserted into the groove.

14. The rechargeable battery pack according to claim 12, characterized in that, The tapered surface contacts the smooth portion of the support protrusion at the edge of the through hole.

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