Battery pack

Abstract

The present disclosure relates to providing a battery pack that is easy to assemble and can reduce an interference area with an external substrate. To this end, the present disclosure provides a battery pack comprising: a battery cell; a platform extending from the battery cells; a first substrate disposed on the platform and connected to the battery cells; a connector mounted on the first substrate; and a second substrate detachably coupled to the connector and extending to the outside of the battery cell. According to the present disclosure, since the connector is directly mounted on the first substrate, and the second substrate is detachably coupled to the connector, position changes between the battery cells and the external substrate can be flexibly responded, and the cost for manufacturing the battery pack can be reduced.

Description

Technical Field

[0001] Aspects of embodiments of the present disclosure relate to a battery pack. Background Art

[0002] Generally, as the demand for portable electronic products such as laptop computers, camcorders, and mobile phones grows rapidly, and the commercialization of robots, electric vehicles, etc. begins in earnest, research on high-performance secondary batteries that can be repeatedly charged and discharged is being actively conducted. Specifically, lithium secondary batteries are widely used as energy sources for various electronic products due to their high energy density and high operating voltage as well as excellent storage and state of health (SOH) characteristics.

[0003] Among lithium secondary batteries, after a flexible printed circuit board (FPCB) is connected to a printed circuit board (PCB), a battery pack using a pouch-type battery cell is assembled to an external substrate through a connector mounted on the FPCB. However, when the assembly positions of the external substrate and the FPCB are relatively far apart, the material cost increases due to the increased length of the FPCB, and the component mounting area of ​​the external substrate loses as much area as the increased length of the FPCB.

[0004] The above information disclosed in the art forming the background of the present disclosure is only intended to enhance understanding of the background of the present disclosure and therefore may contain information that does not constitute the prior art. Summary of the invention

[0005] Aspects of the present disclosure are directed to a battery pack that is easy to assemble and can reduce an interference area with an external substrate.

[0006] These and other aspects and features of the present disclosure will be described in or will be apparent from the following description of some embodiments of the present disclosure.

[0007] According to aspects of the present disclosure, a battery pack includes: a battery cell; a platform extending from the battery cell; a first substrate disposed on the platform and connected to the battery cell; a connector mounted on the first substrate; and a second substrate detachably coupled to the connector and extending to the outside of the battery cell.

[0008] The first substrate may include: a first surface disposed to face the platform and on which the electronic device is mounted; and a second surface disposed at an opposite side of the first surface and on which the connector may be mounted.

[0009] The connector may be disposed in a central portion of the first substrate.

[0010] The battery pack may further include a pair of connection tabs configured to extend from the platform and electrically connect the battery cell and the first substrate, and the connector may be disposed between the pair of connection tabs.

[0011] The second substrate may be flexible.

[0012] The second substrate may include a first region disposed to face the battery cell; and a second region configured to extend from the first region and protrude to the outside of the battery cell, and a length of the first region may be greater than a length of the second region.

[0013] The battery pack may further include a support member configured to prevent deformation of the first substrate.

[0014] The support member may include: a first support member disposed between the platform and the first substrate; and a second support member configured to extend from the first support member and to contact a floor surface on which the battery cells are mounted.

[0015] The first support member and the second support member may be elastically deformable.

[0016] The support member may include: a first support member disposed between the platform and the first substrate; and a second support member spaced apart from the first support member and disposed between the platform and a floor surface on which the battery cells are mounted.

[0017] The support member may include a first support member fixed to the battery cell and configured to support the first substrate relative to the platform; and a second support member spaced apart from the first support member and disposed between the platform and a floor surface on which the battery cell is mounted.

[0018] The first supporting member may include: a supporting case; an inserting portion provided in the supporting case and into which the first substrate is inserted; and an opening formed through the supporting case and configured to expose the connector to the outside.

[0019] The first supporting member may further include a separation preventing member configured to protrude from the supporting case toward the insertion portion and to be elastically deformable.

[0020] The first support member may further include a reinforcement rib coupled to the support case and configured to reinforce rigidity of the support case.

[0021] The battery pack may further include: a protective film disposed to surround the first substrate and having a slit through which the connector is exposed to the outside; and a marking line disposed on the first substrate to be spaced apart from the connector and selectively exposed to the outside according to an area of ​​the slit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings attached to this specification illustrate some embodiments of the present disclosure, and together with the detailed description of the present disclosure, further describe aspects and features of the present disclosure. However, the present disclosure should not be interpreted as being limited to the accompanying drawings.

[0023] Figure 1 is a view schematically showing a mounted state of the battery pack according to the first embodiment of the present disclosure.

[0024] Figure 2 is a perspective view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure.

[0025] Figure 3 is an exploded perspective view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure.

[0026] Figure 4 is an enlarged view schematically showing the configuration of a battery pack according to the first embodiment of the present disclosure.

[0027] Figure 5 is a cross-sectional view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure.

[0028] Figure 6 is an enlarged view schematically showing the configuration of a protective film and a marking line according to the first embodiment of the present disclosure.

[0029] Figure 7 is a perspective view schematically showing the configuration of a battery pack according to a second embodiment of the present disclosure.

[0030] Figure 8 is a front view schematically showing the configuration of a battery pack according to a second embodiment of the present disclosure.

[0031] Fig. 9 is a perspective view schematically showing the configuration of a battery pack according to a third embodiment of the present disclosure.

[0032] Fig.10 It is from Fig. 9 Perspective views showing the configuration of a battery pack according to a third embodiment of the present disclosure from different angles.

[0033] Fig.11 is a cross-sectional view schematically showing the configuration of a battery pack according to a third embodiment of the present disclosure.

[0034] Fig.12 is a perspective view schematically showing the configuration of a battery pack according to a fourth embodiment of the present disclosure.

[0035] Fig.13 is a cross-sectional view schematically showing the configuration of a battery pack according to a fourth embodiment of the present disclosure.

[0036] Fig.14 is a perspective view schematically showing the configuration of a battery pack according to a fifth embodiment of the present disclosure.

[0037] Fig.15 is a cross-sectional view schematically showing the configuration of a battery pack according to a fifth embodiment of the present disclosure.

[0038] Fig.16 is a perspective view schematically showing a configuration of a first supporting member according to a fifth embodiment of the present disclosure.

[0039] Fig.17 It is from Fig.16 Perspective views showing the configuration of a first supporting member according to a fifth embodiment of the present disclosure from different angles. DETAILED DESCRIPTION

[0040] Here, some embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The terms or words used in this specification and claims should not be interpreted as limited to the ordinary meaning or dictionary meaning, but should be interpreted as meanings and concepts consistent with the technical idea of ​​the present disclosure based on the principle that the inventor can act as his or her own lexicon compiler to appropriately define the concept of the term.

[0041] The embodiments described in this specification and the configurations shown in the accompanying drawings are provided as some exemplary embodiments of the present disclosure, and do not represent all technical ideas, aspects and features of the present disclosure. Therefore, it will be understood that when filing this application, there may be various equivalents and modifications that can replace or modify the embodiments described herein.

[0042] It will be understood that when an element or layer is referred to as being "on," "connected to," or "bound to" another element or layer, the element or layer may be directly on, directly connected to, or directly bound to the other element or layer, or one or more intervening elements or layers may also be present. When an element or layer is referred to as being "directly on," "directly connected to," or "directly bound to" another element or layer, there are no intervening elements or layers. For example, when a first element is described as being "bound to" or "connected to" a second element, the first element may be directly bound to or directly connected to the second element, or the first element may be indirectly bound to or indirectly connected to the second element via one or more intervening elements.

[0043] In the accompanying drawings, the sizes of various elements, layers, etc. may be exaggerated for clarity of description. The same reference numerals represent the same or similar elements. As used herein, the term "and / or" includes any combination and all combinations of one or more of the relevant listed items. In addition, when describing embodiments of the present disclosure, the use of "may (may)" relates to "one or more embodiments of the present disclosure". Expressions such as "at least one (kind / person) of ... " and "any one (kind / person) of ... " modify the entire column of elements when following a column of elements without modifying the individual elements in the column. When a phrase such as "at least one of A, B, and C," "at least one of A, B or C," "at least one selected from the group of A, B, and C," or "at least one selected from among A, B, and C" is used to refer to a list of elements A, B, and C, the phrase may refer to any suitable combination (or subset) of A, B, and C and all suitable combinations (or subsets), such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the term "using" and variations thereof may be considered synonymous with the term "utilizing" and variations thereof, respectively. As used herein, the terms "substantially," "approximately," and similar terms are used as terms of approximation rather than terms of degree, and are intended to account for the inherent deviations in measurements or calculations that one of ordinary skill in the art would recognize.

[0044] It will be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the exemplary embodiments, the first element, first component, first region, first layer or first part discussed below may be referred to as a second element, second component, second region, second layer or second part.

[0045] For ease of description, spatially relative terms such as "under", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature to another element or features as shown in the accompanying drawings. It will be understood that in addition to the orientation depicted in the accompanying drawings, the spatially relative terms are intended to cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is turned over, the elements described as "under" or "below" other elements or features will then be oriented as "above" the other elements or features. Therefore, the term "under" can cover both above and below orientations. The device can be oriented otherwise (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0046] The terms used herein are for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular forms "one" and "a (kind / person)" are also intended to include plural forms. It will also be understood that when the terms "include", "comprise" and / or variations thereof are used in this specification, the stated features, wholes, steps, operations, elements and / or components are indicated, but the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their groups is not excluded.

[0047] In addition, any numerical range disclosed and / or described herein is intended to include all sub-ranges of the same numerical precision contained in the described range. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the described minimum value 1.0 and the described maximum value 10.0 (and including the described minimum value 1.0 and the described maximum value 10.0), that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit described herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit described in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification (including claims) to explicitly describe any sub-ranges contained in the range explicitly described here.

[0048] Referring to two compared elements, features, etc. as "the same" may mean that they are "substantially the same." Thus, the phrase "substantially the same" may include situations with what is considered in the art to be low deviations (e.g., 5% or less deviation). Additionally, when a parameter is referred to as being uniform in a given area, this may mean that it is uniform in terms of average value.

[0049] Throughout the specification, unless otherwise specified, each element may be in the singular or in the plural.

[0050] When any element is referred to as being arranged (or located or positioned) “on (or below)” or “on (or below)” a component, this may mean that the arbitrary element is in contact with the upper (or lower) surface of the component, and may also mean that another component may be placed between the component and the arbitrary element arranged (or located or positioned) on (or below) the component.

[0051] In addition, it will be understood that when an element is referred to as being "coupled," "linked," or "connected" to another element, the elements may be directly "coupled," "linked," or "connected" to each other, or one or more intervening elements may be present therebetween, through which the element is "coupled," "linked," or "connected" to the other element. In addition, when a component is referred to as being "electrically coupled" to another component, the component may be directly electrically connected to the other component, or one or more intervening components may be present therebetween, such that the component and the other component are indirectly electrically connected to each other.

[0052] Throughout the specification, unless otherwise stated, when "A and / or B" is stated, it means A, B, or A and B. That is, "and / or" includes any combination or all combinations of the listed multiple items. Unless otherwise stated, when "C to D" is stated, it means C or greater and D or less.

[0053] The terms used in this specification are for describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0054] Figure 1 is a view schematically showing a mounted state of a battery pack according to a first embodiment of the present disclosure, Figure 2 is a perspective view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure, Figure 3 is an exploded perspective view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure, Figure 4 is an enlarged view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure, Figure 5 is a cross-sectional view schematically showing the configuration of a battery pack according to a first embodiment of the present disclosure.

[0055] Reference Figures 1 to 5 , the battery pack according to the present embodiment includes a battery cell 100 , a platform 200 , a first substrate 300 , a connector 400 , and a second substrate 500 .

[0056] The battery cell 100 is a unit structure that stores and supplies power and may be a lithium secondary battery capable of charging and discharging a predetermined amount of power. The battery cell 100 according to the present embodiment may be a pouch type battery cell including an electrode assembly 101 and an exterior material 102 surrounding the electrode assembly 101 .

[0057] Although not shown in the drawings, the electrode assembly 101 may be formed into a winding type in which the first electrode plate and the second electrode plate and the separator disposed between the first electrode plate and the second electrode plate are wound in the form of a reel, or may be formed into a stacked type in which the first electrode plate and the second electrode plate and the separator are stacked on each other.

[0058] The battery cell 100 may have a lower surface disposed on a floor surface F of a housing of various electronic devices such as a laptop computer, a camcorder, or a mobile phone. In the housing, the battery cell 100 may be disposed adjacent to an external substrate S for controlling power supply, operation, etc. of the electronic device.

[0059] The platform 200 extends from the battery cell 100 and supports a first substrate 300 to be described below with respect to the battery cell 100. The platform 200 according to the present embodiment may be formed to have a direction parallel to the length direction of the battery cell 100 (based on Figure 1 The platform 200 may be in the shape of a plate extending horizontally from the end surface of the battery cell 100 in the Y-axis direction of the battery cell 100. The platform 200 may be formed integrally with the battery cell 100, or may be manufactured separately from the battery cell 100 and then coupled to the battery cell 100. The lower surface of the platform 200 may be disposed to be spaced apart from the floor surface F by a predetermined distance.

[0060] The first substrate 300 is disposed on the platform 200 and is electrically connected to the battery cell 100. The first substrate 300 according to the present embodiment may be a printed circuit board (PCB) configured in a flat plate form including a first surface 301 and a second surface 302 opposite to each other. The first substrate 300 may be a double-sided mounting substrate on which components may be mounted on both the first surface 301 and the second surface 302. The first substrate 300 may have a width direction (based on the width of the battery cell 100) of Figure 1 The longitudinal direction is arranged parallel to the X-axis direction).

[0061] The first surface 301 of the first substrate 300 may be disposed to face downward and to face the upper surface of the platform 200. The second surface 302 of the first substrate 300 may be disposed to face upward and to face the upper space of the battery cell 100. Various types of electronic devices 303 for forming a path for a charge / discharge current of the battery cell 100 or for performing a protection operation to prevent overheating or explosion due to overheating, overcharging, overdischarging, etc. of the battery cell 100 may be mounted on both the first surface 301 and the second surface 302 of the first substrate 300. However, the electronic device 303 is not limited thereto and may also be mounted on the first surface 301 or the second surface 302.

[0062] A fixing tape 304 for fixing the first substrate 300 relative to the platform 200 may be installed between the first substrate 300 and the platform 200. The fixing tape 304 according to the present embodiment may be a tape in the form of a sheet having an adhesive material applied on its surface. The fixing tape 304 may have a shape bent into a substantially L-shape, and the inner surface of the fixing tape 304 may be placed on the end surface of the battery cell 100 and the upper surface of the platform 200. When the electronic device 303 mounted on the first surface 301 adheres to the outer surface of the fixing tape 304, the first substrate 300 may be stably fixed on the platform 200.

[0063] The first substrate 300 may be electrically connected to the battery cell 100 via a connection tab 305 extending from the platform 200. The connection tab 305 may be formed of a conductive material such as nickel and aluminum. The connection tab 305 may be formed as a pair of connection tabs 305. One end of one of the pair of connection tabs 305 and one end of the other of the pair of connection tabs 305 may be respectively connected to the first electrode plate and the second electrode plate of the battery cell 100 having different polarities. The other end of each of the pair of connection tabs 305 may be connected to the first surface 301 of the first substrate 300. The other ends of the pair of connection tabs 305 may be arranged to be spaced apart from each other on the first substrate 300 in the width direction of the battery cell 100. The pair of connection tabs 305 may be arranged to be symmetrical about the center line C of the first substrate 300.

[0064] The connector 400 is mounted on the first substrate 300 and serves as a component that provides electrical connection between the first substrate 300 and the second substrate 500. The connector 400 according to the present embodiment may be any of various types of connection devices that use a concave-convex bonding method and are electrically connected to the first substrate 300. The connector 400 may be mounted on the second surface 302 of the first substrate 300. Therefore, since the connector 400 may be exposed at the upper space of the battery cell 100, it may be easier to perform fastening the connector 400 to the second substrate 500 to be described below. The connector 400 may be provided at one end of the first substrate 300 in its length direction.

[0065] The second substrate 500 has one side detachably coupled to the connector 400 and extending to the outside of the battery cell 100. Since the other side of the second substrate 500 is connected to the external substrate S, the second substrate 500 can electrically connect the battery cell 100 and the external substrate S.

[0066] The second substrate 500 according to the present embodiment may be formed to have flexibility. For example, the second substrate 500 may be a flexible printed circuit board (FPCB) that is bendable by laminating a flexible copper clad laminate (FCCL) made of a flexible insulating layer (such as a polyimide film) and a copper foil.

[0067] A pair of intermediate connectors 501 may be respectively formed at both ends of the second substrate 500. The pair of intermediate connectors 501 may be detachably coupled to the connector 400 mounted on the first substrate 300 and the external connector A mounted on the external substrate S, respectively. Therefore, since a worker can replace only the second substrate 500 with a second substrate 500 having a different length while the battery cell 100, the first substrate 300, etc. remain the same, it is possible to flexibly respond to a position change between the battery cell 100 and the external substrate S, and reduce the cost for manufacturing the battery pack.

[0068] The second substrate 500 may include a first region 510 and a second region 520 .

[0069] The first region 510 may refer to a region disposed to face the battery cell 100 among the entire length of the second substrate 500. The first region 510 according to the present embodiment may have an end disposed to face the connector 400 and extending in the length direction of the battery cell 100. One intermediate connector 501 may be disposed at the end of the first region 510.

[0070] The second region 520 is a region other than the first region 510 among the entire length of the second substrate 500, and may refer to a region extending from the first region 510 and protruding to the outside of the battery cell 100. The second region 520 according to the present embodiment may extend from the first region 510 in the width direction of the battery cell 100. An end of the second region 520 may protrude to the outside of the battery cell 100 and may be disposed to face the external connector A on the external substrate S. Another intermediate connector 501 may be disposed at an end of the second region 520.

[0071] The length of the first region 510 may be formed to be greater than that of the second region 520. Therefore, by relatively reducing the size of a region where the second substrate 500 interferes with the external substrate S, a wider space for mounting components on the external substrate S may be secured.

[0072] Figure 6 is an enlarged view schematically showing the configuration of a protective film and a marking line according to the first embodiment of the present disclosure.

[0073] Reference Figures 1 to 6 , the battery pack according to the present embodiment may further include a protection film 600 and a marking line 700 .

[0074] The protective film 600 may be formed in the shape of a film having a small thickness, and may be disposed to surround the first substrate 300 on the outside of the battery cell 100. The protective film 600 may perform a function of protecting the first substrate 300 from external foreign matter, etc. In addition, the protective film 600 may be formed of a flame retardant material such as polyethylene (PE), and may perform a function of preventing the first substrate 300 from being directly exposed to flames in the event of a fire. The protective film 600 may have an edge fixed to the surface of the external material 102 of the battery cell 100 by an adhesive, etc.

[0075] A slit 601 for exposing the connector 400 mounted on the first substrate 300 to the external space may be formed in the protective film 600. The slit 601 according to the present embodiment may be formed to have a shape of a hole formed to pass through the protective film 600. The area of ​​the slit 601 may be formed to be larger than the area of ​​the connector 400. When the protective film 600 is installed to surround the first substrate 300, the connector 400 may be exposed to the upper space of the battery cell 100 through the slit 601. Therefore, the slit 601 may prevent the connection path between the connector 400 and the second substrate 500 from being blocked by the protective film 600. The protective film 600 may be provided to surround the lower surface of the platform 200.

[0076] The marking line 700 is disposed on the first substrate 300, and visually provides information about the area of ​​the slit 601. More specifically, the marking line 700 may serve as a component that visually provides information to a worker about whether the area of ​​the slit 601 is formed to be larger or smaller than a predetermined area that does not excessively reduce the flame retardant performance of the protective film 600. Therefore, the marking line 700 may reduce the time taken for the process of installing the protective film 600.

[0077] The marking line 700 according to the present embodiment may be formed in the shape of a line marked on the second surface 302 of the first substrate 300. The marking line 700 may be formed to have a color that can distinguish the marking line 700 from the first substrate 300. The marking line 700 may be formed as a pair of marking lines 700. A pair of marking lines 700 may have a length direction arranged in parallel with the length direction of the battery cell 100. A pair of marking lines 700 may be arranged to be spaced apart from each other in the length direction of the first substrate 300. A pair of marking lines 700 may be respectively arranged at both sides of the connector 400 and the connector 400 is arranged between the pair of marking lines 70. Each marking line 700 may be spaced 1.5 mm or less from the connector 400. When the area of ​​the slit 601 is within the range of the predetermined area, the interval between the pair of marking lines 700 may be greater than the width of the slit 601 parallel to the length direction of the first substrate 300, and the marking line 700 may be covered by the protective film 600 and may not be exposed to the outside. Meanwhile, when the area of ​​the slit 601 exceeds the range of the predetermined area, the marking line 700 may be exposed to the outside space through the slit 601 , and the worker may recognize that the area of ​​the slit 601 has deviated from the range of the predetermined area by the marking line 700 being exposed to the outside through the slit 601 .

[0078] Hereinafter, a battery pack according to a second embodiment of the present disclosure will be described.

[0079] Figure 7 is a perspective view schematically showing a configuration of a battery pack according to a second embodiment of the present disclosure, Figure 8 is a front view schematically showing the configuration of a battery pack according to a second embodiment of the present disclosure.

[0080] Reference Figure 7 and Figure 8 , the battery pack according to the second embodiment of the present disclosure may be configured the same as the battery pack according to the first embodiment of the present disclosure except for the arrangement structure of the connector 400 .

[0081] Therefore, when describing the configuration of the battery pack according to the second embodiment of the present disclosure, only the arrangement structure of the connector 400 that is different from the battery pack according to the first embodiment of the present disclosure will be described.

[0082] The description of the battery pack according to the first embodiment of the present disclosure may be applied as is to the remaining configuration of the battery pack according to the second embodiment of the present disclosure.

[0083] The connector 400 according to the present embodiment may be disposed in the central portion of the first substrate 300. More specifically, the connector 400 may be disposed between a pair of connection tabs 305 spaced apart from each other in the length direction of the first substrate 300, that is, disposed on the center line C of the first substrate 300. In this case, the connector 400 may disperse a certain amount of pressing force generated in the process of fastening the second substrate 500 to the connector 400 to the pair of connection tabs 305 supporting the first substrate 300 on both sides of the connector 400. Therefore, compared with the case where the connector 400 is disposed at the end of the first substrate 300, the battery pack according to the present embodiment may relatively reduce the amount of deformation of the first substrate 300 caused by the pressing force generated in the process of fastening the second substrate 500 to the connector 400.

[0084] Hereinafter, a battery pack according to a third embodiment of the present disclosure will be described.

[0085] Fig. 9 is a perspective view schematically showing a configuration of a battery pack according to a third embodiment of the present disclosure, Fig.10 It is from Fig. 9 perspective views showing the configuration of a battery pack according to a third embodiment of the present disclosure from different angles, Fig.11 is a cross-sectional view schematically showing the configuration of a battery pack according to a third embodiment of the present disclosure.

[0086] Reference Figures 9 to 11 , the battery pack according to the third embodiment of the present disclosure may be configured the same as the battery pack according to the first or second embodiment of the present disclosure, except that a support member 800 is further included.

[0087] Therefore, when describing the configuration of the battery pack according to the third embodiment of the present disclosure, only the support member 800 that is not described in the description of the battery pack according to the first or second embodiment of the present disclosure will be described. The description of the battery pack according to the first or second embodiment of the present disclosure may be applied as is to the remaining configuration of the battery pack according to the third embodiment of the present disclosure.

[0088] At the same time, for the sake of convenience, although in Figures 9 to 11 2 shows an example in which the support member 800 is applied to the battery pack according to the first embodiment of the present disclosure, but the support member 800 is not limited thereto and may also be applied to the battery pack according to the second embodiment of the present disclosure.

[0089] The support member 800 prevents the first substrate 300 from being deformed and sagging due to a pressing force generated in the process of fastening the second substrate 500 to the connector 400. Therefore, the support member 800 can prevent damage to the components due to deformation and sagging of the first substrate 300 and prevent the second substrate 500 from being not fastened to the connector 400.

[0090] The supporting member 800 according to the present embodiment may include a first supporting member 810 and a second supporting member 820 .

[0091] The first support member 810 is disposed between the platform 200 and the first substrate 300. The first support member 810 may be formed to have a flat plate shape. The first support member 810 may be inserted into an empty space formed between the platform 200 (more specifically, the fixing belt 304 disposed on the upper surface of the platform 200) and the first substrate 300. The upper surface of the first support member 810 may contact the lower surface (i.e., the first surface 301) of the first substrate 300. A portion of the lower surface of the first support member 810 may contact the upper surface of the fixing belt 304, and the remaining portion of the lower surface of the first support member 810 may protrude to the outside of the platform 200.

[0092] The first supporting member 810 may be disposed at a position facing the connector 400 with the first substrate 300 disposed between the first supporting member 810 and the connector 400. In this case, the area of ​​the first supporting member 810 may be formed to be larger than the area of ​​the connector 400. Therefore, the first supporting member 810 may uniformly absorb the pressing force generated in the entire area of ​​the connector 400.

[0093] The second support member 820 extends from the first support member 810 and contacts the floor surface F of the housing of the electronic device on which the battery cell 100 is mounted. That is, the second support member 820 may serve as a component that disperses the pressing force transferred to the first support member 810 through the first substrate 300 to the floor surface F. Therefore, the second support member 820 may prevent the first substrate 300 from sagging due to deformation of the platform 200 that occurs when the pressing force transferred to the first support member 810 through the first substrate 300 is concentrated on the platform 200.

[0094] The second support member 820 according to the present embodiment may be formed in a column shape vertically extending from an end of the first support member 810 protruding to the outside of the platform 200 toward the floor surface F. The lower surface of the second support member 820 may directly contact the floor surface F of the housing of the electronic device on which the battery cell 100 is mounted.

[0095] The first support member 810 and the second support member 820 may be formed of a flexible material such as rubber and silicone to be elastically deformable. Therefore, the first support member 810 and the second support member 820 may offset the pressing force generated in the process of fastening the second substrate 500 to the connector 400 by their elastic restoring force.

[0096] Hereinafter, a battery pack according to a fourth embodiment of the present disclosure will be described.

[0097] Fig.12 is a perspective view schematically showing a configuration of a battery pack according to a fourth embodiment of the present disclosure, Fig.13 is a cross-sectional view schematically showing the configuration of a battery pack according to a fourth embodiment of the present disclosure.

[0098] Reference Fig.12 and Fig.13 , the battery pack according to the fourth embodiment of the present disclosure may be configured the same as the battery pack according to the third embodiment of the present disclosure except for a specific configuration of the supporting member 800 .

[0099] Therefore, when describing the configuration of the battery pack according to the fourth embodiment of the present disclosure, only the specific configuration of the support member 800 that is different from the battery pack according to the third embodiment of the present disclosure will be described. The description of the battery pack according to the third embodiment of the present disclosure can be applied as is to the remaining configuration of the battery pack according to the fourth embodiment of the present disclosure.

[0100] The supporting member 800 according to the present embodiment may include a first supporting member 830 and a second supporting member 840 .

[0101] The first supporting member 830 is disposed between the platform 200 and the first substrate 300. The first supporting member 830 may be formed to have a flat plate shape. The first supporting member 830 may be inserted into an empty space formed between the platform 200 (more specifically, the fixing belt 304 disposed on the upper surface of the platform 200) and the first substrate 300. The upper surface of the first supporting member 830 may contact the lower surface (i.e., the first surface 301) of the first substrate 300. A portion of the lower surface of the first supporting member 830 may contact the upper surface of the fixing belt 304.

[0102] The first supporting member 830 may be disposed at a position facing the connector 400 with the first substrate 300 disposed between the first supporting member 830 and the connector 400. In this case, the area of ​​the first supporting member 830 may be formed to be larger than the area of ​​the connector 400. Therefore, the first supporting member 830 may uniformly absorb the pressing force generated in the entire area of ​​the connector 400.

[0103] The second support member 840 is spaced apart from the first support member 830 and disposed between the platform 200 and a floor surface F on which the battery cells 100 are mounted. That is, the second support member 840 may serve as a component that directly supports the platform 200 with respect to the floor surface F. Therefore, the second support member 840 may prevent the first substrate 300 from sagging due to deformation of the platform 200.

[0104] The second support member 840 according to the present embodiment may be formed to have a flat plate shape. The second support member 840 may be inserted into an empty space formed between the lower surface of the platform 200 and the floor surface F. The upper surface of the second support member 840 may contact the lower surface of the platform 200, or contact the protective film 600 when the protective film 600 is disposed around the lower surface of the platform 200. The lower surface of the second support member 840 may contact the floor surface F.

[0105] The first support member 830 and the second support member 840 may be formed of a flexible material such as rubber and silicone to be elastically deformable. Therefore, the first support member 830 and the second support member 840 may offset the pressing force generated in the process of fastening the second substrate 500 to the connector 400 by their elastic restoring force.

[0106] Hereinafter, a battery pack according to a fifth embodiment of the present disclosure will be described.

[0107] Fig.14 is a perspective view schematically showing a configuration of a battery pack according to a fifth embodiment of the present disclosure, Fig.15 is a cross-sectional view schematically showing the configuration of a battery pack according to a fifth embodiment of the present disclosure.

[0108] The battery pack according to the fifth embodiment of the present disclosure may be configured the same as the battery pack according to the third embodiment of the present disclosure except for a specific configuration of the supporting member 800 .

[0109] Therefore, when describing the configuration of the battery pack according to the fifth embodiment of the present disclosure, only the specific configuration of the support member 800 that is different from the battery pack according to the third embodiment of the present disclosure will be described. The description of the battery pack according to the third embodiment of the present disclosure can be applied as is to the remaining configuration of the battery pack according to the fifth embodiment of the present disclosure.

[0110] The supporting member 800 according to the present embodiment may include a first supporting member 850 and a second supporting member 860 .

[0111] The first support member 850 is fixed to the battery cell 100 and supports the first substrate 300 relative to the platform 200. The first support member 850 may be formed of a material having higher rigidity than that of the first substrate 300. Therefore, due to the rigidity of the first support member 850, the first support member 850 may prevent the first substrate 300 from being deformed by absorbing a pressing force generated in a process of fastening the connector 400 and the second substrate 500.

[0112] Fig.16 is a perspective view schematically showing a configuration of a first supporting member according to a fifth embodiment of the present disclosure, Fig.17 It is from Fig.16 Perspective views showing the configuration of a first supporting member according to a fifth embodiment of the present disclosure from different angles.

[0113] Reference Figures 15 to 17 , the first supporting member 850 according to the present embodiment may include a supporting housing 851 , an inserting portion 852 , and an opening 853 .

[0114] The support housing 851 forms the entire exterior of the first support member 850 and is fixed to the battery cell 100. The support housing 851 according to the present embodiment may be formed in a substantially box shape and disposed on the platform 200. One surface of the support housing 851 may be in contact with an end surface of the battery cell 100 from which the platform 200 extends, and the other surface of the support housing 851 may be in contact with an upper surface of the platform 200. The support housing 851 may be fixed to at least one of the end surface of the battery cell 100 and the upper surface of the platform 200 by various bonding methods such as welding and adhesion.

[0115] The insertion portion 852 is provided in the support housing 851, and the first substrate 300 is inserted into the insertion portion 852. The insertion portion 852 according to the present embodiment may be formed in a shape having a groove formed to be recessed from the outer peripheral surface of the support housing 851 in a direction parallel to the first substrate 300. The height of the insertion portion 852 may be formed to be greater than the distance between the first surface 301 and the second surface 302 of the first substrate 300. A portion of the outer peripheral surface of the insertion portion 852 may be communicated with the external space of the support housing 851, and the remaining portion of the insertion portion 852 may be provided to face the inner surface of the support housing 851.

[0116] The first substrate 300 may be inserted into the insertion portion 852 through a portion of the outer peripheral surface of the insertion portion 852 that communicates with the external space of the support housing 851. When the first substrate 300 is inserted into the insertion portion 852, the support housing 851 may be disposed to surround the first substrate 300. For example, Fig.15As shown in , the support housing 851 may be provided to surround the end of the first substrate 300. In this case, the support housing 851 may block the end of the first substrate 300 from being directly exposed to the outside, thereby further simplifying the shape of the protective film 600 at the end of the first substrate 300.

[0117] The opening 853 is formed to pass through the support shell 851 and expose the connector 400 to the outside. The opening 853 according to the present embodiment may be formed in the shape of a hole having a second surface 302 of the first substrate 300 and passing vertically through the upper surface of the support shell 851. The opening 853 may be vertically connected to the slit 601. Therefore, the connector 400 may be exposed to the upper space of the battery cell 100 through the opening 853 and the slit 601 in sequence. The width of the opening 853 parallel to the length direction of the first substrate 300 may be greater than the interval between the pair of marking lines 700. Therefore, the opening 853 may enable the pair of marking lines 700 to be identified from the outside.

[0118] The pressing force generated in the process of fastening the second substrate 500 to the connector 400 exposed to the outside through the opening 853 may be transferred to the support case 851 through the first surface 301 of the first substrate 300. Due to the rigidity of the support case 851, the support case 851 may prevent the first substrate 300 from being deformed by dispersing the pressing force received by the first substrate 300.

[0119] The first supporting member 850 according to the present embodiment may further include an anti-separation member 854 .

[0120] The anti-separation member 854 is used as a component to prevent the first substrate 300 from being separated from the insertion portion 852. The anti-separation member 854 according to the present embodiment may protrude from the inner surface of the support shell 851 toward the insertion portion 852, and may be configured to block the insertion path of the first substrate 300 into the insertion portion 852. The anti-separation member 854 may be elastically deformable. Therefore, when the first substrate 300 is inserted into the insertion portion 852, the anti-separation member 854 may be elastically deformed due to contact with the first substrate 300, and the insertion path of the first substrate 300 may be opened. The anti-separation member 854 may be formed in a shape having a hook so as to hook on and bond to the outer surface of the first substrate 300 when the first substrate 300 is fully inserted into the insertion portion 852. Therefore, when the first substrate 300 is fully inserted into the insertion portion 852, the anti-separation member 854 may block the insertion path of the first substrate 300 to prevent the first substrate 300 from being separated from the insertion portion 852. Although in Fig.17 An example of forming a single anti-separation member 854 is shown in FIG. 8 , but the number of anti-separation members 854 is not limited thereto, and a plurality of anti-separation members 854 may also be formed.

[0121] The first supporting member 850 according to the present embodiment may further include a reinforcing rib 855 .

[0122] The reinforcing rib 855 is coupled to the support shell 851 and reinforces the rigidity of the support shell 851. The reinforcing rib 855 according to the present embodiment may be formed to have a strip shape protruding from the floor surface of the support shell 851 toward the insertion portion 852. The reinforcing rib 855 may be formed as a plurality of reinforcing ribs 855. The reinforcing rib 855 may be arranged to form a grid shape in the insertion portion 852. The reinforcing rib 855 may be formed of the same material as the support shell 851, or may be formed of a material having a higher rigidity than that of the support shell 851. When the first substrate 300 is inserted into the insertion portion 852, the reinforcing rib 855 may be in direct contact with the first surface 301 of the first substrate 300.

[0123] The second support member 860 is spaced apart from the first support member 850 and disposed between the platform 200 and a floor surface F on which the battery cells 100 are mounted. That is, the second support member 860 may serve as a component that directly supports the platform 200 with respect to the floor surface F. Therefore, the second support member 860 may prevent the first substrate 300 from sagging due to deformation of the platform 200.

[0124] The second support member 860 according to the present embodiment may be formed to have a flat plate shape. The second support member 860 may be inserted into an empty space formed between the lower surface of the platform 200 and the floor surface F. The upper surface of the second support member 860 may contact the lower surface of the platform 200, or contact the protective film 600 when the protective film 600 is disposed around the lower surface of the platform 200. The lower surface of the second support member 860 may contact the floor surface F.

[0125] The second support member 860 may be formed of a flexible material such as rubber and silicone to be elastically deformable. Therefore, the second support member 860 may offset the pressing force generated in the process of fastening the second substrate 500 to the connector 400 due to its elastic restoring force.

[0126] According to the present disclosure, in a battery pack, since a connector is directly mounted on a first substrate and a second substrate is detachably coupled to the connector, it is possible to flexibly respond to positional changes between a battery cell and an external substrate and reduce costs for manufacturing the battery pack.

[0127] According to the present disclosure, in a battery pack, since the length of the first area of ​​the second substrate is formed to be greater than the length of its second area, the size of the area where the second substrate interferes with the external substrate can be relatively reduced, and a wider space can be ensured for mounting components on the external substrate.

[0128] According to the present disclosure, by the supporting member, it is possible to prevent the first substrate from being deformed and drooped due to a pressing force generated in a process of fastening the second substrate to the connector.

[0129] According to the present disclosure, the first substrate can be protected from fire, foreign matter, etc. by the protective film, and the time taken for the process of installing the protective film can be reduced by the marking line.

[0130] However, effects obtainable through the present disclosure are not limited to the above-mentioned effects, and those skilled in the art will clearly understand other technical effects not mentioned through the description of the present disclosure.

[0131] Although the present disclosure has been described with reference to the embodiments shown in the drawings, these embodiments are merely exemplary, and it should be understood that those skilled in the art can derive various modifications and other equivalent embodiments based on these embodiments.

Claims

1. A battery pack, comprising: Battery cells; a platform extending from the battery cell; a first substrate disposed on the platform and connected to the battery cell; A connector mounted on the first substrate; as well as The second substrate is detachably coupled to the connector and extends to the outside of the battery cell.

2. The battery pack according to claim 1, wherein: The first substrate comprises: A first surface disposed to face the platform; and a second surface disposed at an opposite side of the first surface, Wherein, the connector is mounted on the second surface.

3. The battery pack according to claim 2, wherein: The connector is disposed in a central portion of the first substrate.

4. The battery pack according to claim 2, further comprising a pair of connection tabs configured to extend from the platform and electrically connect the battery cell and the first substrate, in, The connector is disposed between the pair of connection tabs.

5. The battery pack according to claim 1, wherein: The second substrate is flexible.

6. The battery pack according to claim 5, wherein: The second substrate comprises: A first region, arranged to face the battery cell; and a second region configured to extend from the first region and protrude to the outside of the battery cell, The length of the first region is greater than the length of the second region. 7 . The battery pack according to claim 1 , further comprising a supporting member configured to prevent deformation of the first substrate.

8. The battery pack according to claim 7, wherein: The supporting member comprises: a first supporting member disposed between the platform and the first substrate; and The second support member is configured to extend from the first support member and to contact a floor surface on which the battery cells are mounted.

9. The battery pack according to claim 8, wherein: The first support member and the second support member are elastically deformable.

10. The battery pack according to claim 7, wherein: The supporting member comprises: a first supporting member disposed between the platform and the first substrate; and A second support member is spaced apart from the first support member and is disposed between the platform and a floor surface on which the battery cells are mounted.

11. The battery pack according to claim 7, wherein: The supporting member comprises: a first supporting member fixed to the battery cell and configured to support the first substrate relative to the platform; and A second support member is spaced apart from the first support member and is disposed between the platform and a floor surface on which the battery cells are disposed.

12. The battery pack according to claim 11, wherein: The first supporting member comprises: Supporting shell; an insertion portion provided in the support housing and into which the first substrate is inserted; and An opening is formed through the support housing and is configured to expose the connector to the outside.

13. The battery pack according to claim 12, wherein: The first supporting member further includes a separation preventing member configured to protrude from the supporting housing toward the insertion portion and to be elastically deformable.

14. The battery pack according to claim 12, wherein: The first support member further includes a reinforcement rib coupled to the support case and configured to reinforce rigidity of the support case.

15. The battery pack according to claim 1, further comprising: a protective film disposed to surround the first substrate and having a slit through which the connector is exposed to the outside; as well as A marking line is provided on the first substrate to be spaced apart from the connector and is selectively exposed to the outside according to an area of ​​the slit.

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