Patent Description:
The present application claims priority to <CIT> in the Republic of Korea,.

The secondary battery is highly applicable to various products and has electrical characteristics with high energy density. The secondary battery is applied not only to portable electronic devices but also to electric vehicles, hybrid electric vehicles, power storage devices, and the like, driven by an electric driving source.

The secondary battery is attracting attention as a new energy source for improving eco-friendliness and energy efficiency since the use of fossil fuels is significantly reduced and no by-product is generated during the use of energy.

Meanwhile, electronic devices such as notebooks, mini notebooks, netbooks, smart phones and portable multimedia players (PMPs) generally have a mobile power source. The electronic device uses a battery pack in which a plurality of secondary batteries are connected in series and/or in parallel. The battery pack includes a protective circuit module (PCM) for protecting the secondary batteries from overcharge, overdischarge or overcurrent, and the secondary battery and the protection circuit module are embedded together in a frame.

Also, recently, due to the miniaturization of the electronic device, the battery pack is required to have a minimized volume. The battery pack applied to the electronic device may be configured to fix and protect the secondary batteries and the protection circuit module inside the frame attach by attaching a label in the form of an adhesive sheet having an adhesive surface to the frame having a frame shape to reduce thickness.

In addition, as the thickness of the electronic device becomes thin, the electronic device may have increased flexibility, and the battery pack accommodated inside the electronic device may also be bent or deformed together with the electronic device.

Accordingly, even when a user merely presses a touch pad of the electronic device, the battery pack may be bent or deformed. Thus, the adhesion surface of the label may be repeatedly bonded to or separated from the secondary batteries or the frame. In this case, noise may be generated frequently, which may cause inconvenience to the user.

The present disclosure is designed to solve the problems of the related art, and therefore the present disclosure is directed to providing a battery pack including an effective anti-noise member and a lightweight battery frame.

According to the present invention, there is provided a battery pack as claimed in claim <NUM>, comprising:.

Also, the battery pack may further comprise a battery management unit configured to control charging and discharging of the at least one secondary battery.

Moreover, a control accommodation portion having a recessed space to accommodate the battery management unit may be formed at the battery frame.

In addition, the anti-noise member may be formed at a portion of the adhesive surface of the packaging member, which faces the battery management unit.

Also, the anti-noise member may have a ridged portion extending to be in close contact with an outer surface of the battery management unit.

Moreover, an uneven structure dented or protruding according to the shape of an outer surface of the battery management unit or the control accommodation portion may be formed at the ridged portion of the anti-noise member.

In addition, a thermally conductive material may be added between the anti-noise member and the battery management unit so that no gap is created therebetween.

At least one dented groove recessed inward and extending along an edge direction of the outermost edge is formed at a horizontal outer surface of the outermost edge of the battery frame.

The anti-noise member is formed at a portion of the adhesive surface of the packaging member, which faces the dented groove.

Moreover, a rib protruding outward and extending from one inner side of the dented groove to the other inner side thereof may be formed at the dented groove of the battery frame.

In addition, the battery pack may comprise two or more secondary batteries, and a barrier extending from one inner side of the outermost edge of the battery frame to the other inner side thereof may be formed in the battery accommodation portion of the battery frame so that the two or more secondary batteries are separately accommodated therein.

Further, a vertical height of the barrier may be lower than a height of an upper portion of the two or more secondary batteries accommodated in the battery accommodation portion.

Also, the battery pack may comprise two or more secondary batteries, and a barrier extending from one inner side of the outermost edge of the battery frame to the other inner side thereof may be formed in the battery accommodation portion of the battery frame so that the two or more secondary batteries are separately accommodated therein.

Moreover, the anti-noise member may be formed at a portion of the adhesive surface of the packaging member, which faces the barrier.

In addition, the fixing portion of the packaging member may be bent and extended inward so that the adhesive surface thereof is attached to a lower surface of the secondary battery.

Further, a support protrusively extending inward to support a lower portion of the secondary battery upward may be formed at an inner surface of an inner space of the battery accommodation portion.

In another aspect of the present disclosure, there is also provided an electronic device, comprising the battery pack.

In still another aspect of the present disclosure, there is also provided an electronic system, comprising the electronic device.

According to an embodiment of the present disclosure, since the battery pack includes an anti-noise member attached to at least one portion of the adhesive surface of the packaging member, it is possible to prevent that the adhesive surface of the packaging member attached to a portion of the outer surface of the battery frame, where the packaging member is easily detached, is separated therefrom to generate noise.

Further, according to an embodiment of the present disclosure, since the anti-noise member is formed on the adhesive surface of the packaging member at a portion corresponding to the control accommodation portion accommodating the noisy battery management unit, where noise is generated frequently, it is possible to significantly reduce the noise generated from the battery pack. Accordingly, the electronic device including the battery pack may be used conveniently.

In addition, according to an embodiment of the present disclosure, since a ridged portion configured to be in close contact with the battery management unit is formed on the anti-noise member, it is possible to reduce the gap that may be formed between the packaging member and the battery management unit as much as possible, thereby effectively reducing the noise generated from the battery pack.

Also, according to another embodiment of the present disclosure, since an uneven structure is formed at the ridged portion of the anti-noise member configured to closely contact the battery management unit, the gap that may be formed between the packaging member and the printed circuit board of the battery management unit may be reduced as much as possible. Accordingly, the noise generated from the battery pack may be further reduced.

Moreover, according to another embodiment of the present disclosure, when a thermally conductive material is added to be interposed between the anti-noise member and the battery management unit, the empty space that may be created between the anti-noise member and the battery management unit may be minimized, thereby preventing the noise generated due to the empty space in advance and reducing the amount of air occupied in the empty space. In addition, the thermal conductivity of the heat generated from the secondary battery may be significantly increased, thereby improving the cooling efficiency of the battery pack.

In addition, according to an embodiment of the present disclosure, since the dented groove formed at the battery frame of the present disclosure may reduce the weight of the battery frame, it is possible to reduce the weight of the battery pack.

Further, according to another embodiment of the present disclosure, since the anti-noise member of the present disclosure is formed on at least a portion of the adhesive surface of the packaging member that faces the barrier, it is possible to prevent the barrier from contacting the adhesive surface of the packaging member. Accordingly, since the adhesion of the barrier and the packaging member is prevented, it is possible to reduce the noise generated by the packaging member that is attached to and detached from the upper surface of the barrier.

<FIG> is a perspective view schematically showing a battery pack according to an embodiment of the present disclosure. <FIG> is an exploded perspective view schematically showing the battery pack according to an embodiment of the present disclosure. Also, <FIG> is a plan view schematically showing a secondary battery, employed at the battery pack according to an embodiment of the present disclosure.

Referring to <FIG>, a battery pack <NUM> includes at least one rechargeable secondary battery <NUM>, a battery frame <NUM>, a packaging member <NUM>, and an anti-noise member <NUM>.

First of all, referring to <FIG> again, the secondary battery <NUM> may be a pouch-type secondary battery <NUM>. In particular, here, the pouch-type secondary battery <NUM> may include an electrode assembly (not shown), an electrolyte (not shown) and a pouch exterior <NUM>.

Here, the electrode assembly (not shown) may be configured such that at least one positive electrode plate and at least one negative electrode plate are disposed with a separator being interposed therebetween. More specifically, the electrode assembly may be classified into a winding type in which one positive electrode plate and one negative electrode plate are wound together with a separator, a stacking type in which a plurality of positive electrode plates and a plurality of negative electrode plates are alternately stacked with a separator interposed therebetween, or the like.

Also, the pouch exterior <NUM> may include an outer insulating layer, a metal layer and an inner adhesive layer. Moreover, the pouch exterior <NUM> may contain a metal thin film, such as an aluminum thin film, to protect inner components such as the electrode assembly and the electrolyte and to improve the electrochemical properties of the electrode assembly and the electrolyte and enhance heat dissipation.

In addition, the aluminum thin film may be interposed between insulating layers made of an insulating material to ensure electrical insulation with components inside the secondary battery <NUM>, such as the electrode assembly and the electrolyte, or other components outside the secondary battery <NUM>.

Further, the pouch exterior <NUM> may have two pouches, at least one of which may have a concave interior space. In addition, the electrode assembly may be accommodated in the inner space of the pouch. Also, outer circumferential surfaces of the two pouches may be fused to each other so that the inner space accommodating the electrode assembly is sealed. For example, as shown in <FIG>, a sealed terrace portion <NUM> may be formed at the outer circumferential surface of the pouch exterior <NUM>.

Further, each pouch-type secondary battery <NUM> may include an electrode lead <NUM>, and the electrode lead <NUM> may include a positive electrode lead 111a and a negative electrode lead 111b. Here, each of the electrode leads 111a, 111b may have a plate shape so that two wide surfaces are located at upper and lower portions thereof.

In addition, the electrode lead <NUM> may be configured to protrude outward from the terrace portion <NUM> located at one outer circumference of the pouch exterior <NUM>. That is, the electrode lead <NUM> may be drawn out of the pouch exterior <NUM> through the terrace portion <NUM> of the pouch exterior <NUM>.

For example, as shown in <FIG>, one electrode lead 111a may be configured to protrude at one side of one edge of the terrace portion <NUM> of the secondary battery <NUM>, and the other electrode lead 111b may be spaced apart from one electrode lead 111a by a predetermined distance and configured to protrude at the other side of one edge of the terrace portion <NUM>.

The configuration of the pouch-type secondary battery <NUM> described above is obvious to those skilled in the art and thus is not described in detail here. In addition, various kinds of secondary batteries <NUM> known at the time of filing this application may be employed at the battery pack <NUM> according to the present disclosure.

Referring to <FIG> and <FIG> again, the secondary battery <NUM> may include a current blocking member <NUM> welded to the electrode lead 111b.

Specifically, the current blocking member <NUM> may include a current blocking element <NUM>, a first connection member <NUM> and a second connection member <NUM>. In addition, both sides of the current blocking element <NUM> are electrically connected to the first connection member <NUM> and the second connection member <NUM>, respectively. Further, the first connection member <NUM> may be coupled to be electrically connected to the electrode lead 111b of the secondary battery <NUM>.

In addition, the second connection member <NUM> may be electrically connected to another component of the battery pack <NUM>. For example, the second connection member <NUM> may be electrically connected to the battery management unit <NUM> of the battery pack <NUM>.

For example, as shown in <FIG>, the current blocking member <NUM> may be located on the terrace portion <NUM> of the secondary battery <NUM>. Further, one end of the first connection member <NUM> may be coupled to the current blocking element <NUM>, and a portion of the first connection member <NUM> may be coupled to the electrode lead 111b.

In addition, the battery frame <NUM> may include a battery accommodation portion <NUM> configured to accommodate the at least one secondary battery <NUM>. Further, an opening <NUM> having a size corresponding to a bottom surface of the secondary battery <NUM> may be formed in the battery accommodation portion <NUM>. In addition, the battery frame <NUM> may have a rectangular frame shape having a rectangular outermost edge <NUM>.

For example, as shown in <FIG>, the battery accommodation portion <NUM> accommodating four secondary batteries <NUM> is formed in the battery frame <NUM>. In addition, four openings <NUM> having sizes corresponding to the bottom surface of the secondary batteries <NUM> may be formed in the battery accommodation portion <NUM>.

Thus, according to this configuration of the present disclosure, since the opening <NUM> having a size corresponding to the lower surface of the secondary battery <NUM> is formed in the battery accommodation portion <NUM> formed in the battery frame <NUM>, the heat generated from the secondary battery <NUM> may be efficiently dissipated out of the battery frame <NUM>.

For example, the battery frame <NUM> may include at least one selected from polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyvinyl chloride (PVC). However, without being limited to these materials, any material having electrical insulation that may be applied to the battery frame <NUM> and capable of being lightweight is available.

<FIG> is a bottom schematically showing a packaging member, employed at the battery pack according to an embodiment of the present disclosure. Also, <FIG> is a plan view schematically showing some components of the battery pack according to an embodiment of the present disclosure.

Referring to <FIG> and <FIG> along with <FIG>, the packaging member <NUM> may be in the form of an adhesive sheet having an adhesive surface <NUM> formed on one surface thereof. Specifically, the sheet member of the packaging member <NUM> may include a material such as polyethylene terephthalate (PET). For example, an adhesive surface <NUM> formed by applying an adhesive material may be formed on one surface (inner surface) of the sheet member of the packaging member <NUM>. In addition, letters or various shapes may be printed on the other surface (outer surface) of the sheet member of the packaging member <NUM>.

More specifically, the packaging member <NUM> may include a body portion <NUM> and a fixing portion <NUM>. In addition, the body portion <NUM> may include a portion that is fixedly adhered to the upper portion of the secondary battery <NUM> accommodated in the battery frame <NUM>. Further, a part of the body portion <NUM> may be adhered to at least a portion of the upper surface of the battery frame <NUM>. For example, when viewed in the F direction, the body portion <NUM> may be configured to be adhered to the upper surfaces of the secondary battery <NUM> and the battery frame <NUM>.

Here, the terms indicating directions such as front, rear, left, right, upper and lower, used in this specification, may vary depending on the position of an observer or the shape of an object. However, in this specification, for convenience of description, the front, rear, left, right, upper and lower directions are distinguished based on the case where viewed in the F direction.

In addition, the fixing portion <NUM> may be bent and extended downward from the body portion <NUM> and serve as a portion where the adhesive surface <NUM> is fixedly adhered to a horizontal (x-y directional) outer surface of the outermost edge <NUM> (<FIG>) of the battery frame <NUM>.

For example, as shown in <FIG>, the packaging member <NUM> having a side portion to which the upper portion and the horizontal side of the battery frame <NUM> are adhered may include a body portion <NUM> and a fixing portion <NUM>. In addition, the body portion <NUM> may be a region that is fixedly adhered to the upper portion of the secondary battery <NUM> and the battery frame <NUM>, and the fixing portion <NUM> may be a region that is fixedly adhered to the outer surface of the outermost edge <NUM> of the battery frame <NUM>.

In addition, the battery pack <NUM> may further include a second packaging member <NUM>. Specifically, the second packaging member <NUM> may have a sheet shape to surround the lower surface of the battery frame <NUM>. Also, an adhesive may be applied to an upper surface of the second packaging member <NUM> to form the adhesive surface <NUM>. Thus, the second packaging member <NUM> may be formed to cover the lower surface of the secondary battery <NUM> mounted to the battery frame <NUM> and the lower surface of the battery frame <NUM>.

Referring to <FIG> along with <FIG>, the upper surface of the anti-noise member <NUM> may have in the form of a sheet or a block. In addition, the anti-noise member <NUM> may be configured to be adhered to at least one portion of the adhesive surface <NUM> of the packaging member <NUM>. For example, the anti-noise member <NUM> may be in the form of a flat sheet having at least one of polyethylene terephthalate, polypropylene, polyethylene, vinyl, and polystyrene. In addition, the anti-noise member <NUM> may be in the form of a block (not shown) having a fiber, rubber or silicone material.

Further, the anti-noise member <NUM> may have a size corresponding to a portion where a gap is formed in the vertical direction between the packaging member <NUM> and the battery frame <NUM>, and the anti-noise member <NUM> may be added at a position corresponding to the portion where the gap is formed. For example, as shown in <FIG>, the anti-noise member <NUM> may be added to be attached to a central portion of the adhesive surface <NUM> formed at the lower surface of the packaging member <NUM>.

Meanwhile, in the prior art, while a user uses an electronic device including the battery pack <NUM>, the battery frame <NUM> of the battery pack <NUM> may be easily distorted due to the force of the user. At this time, the electronic device is likely to generate noise frequently at a portion where a gap is formed between the adhesive surface <NUM> of the packaging member <NUM> and the battery frame <NUM>. That is, a large noise may be generated when the adhesive surface <NUM> of the packaging member <NUM> is detached from the battery frame <NUM>. For example, the electronic device may be a tablet PC or notebook.

However, according to this configuration of the present disclosure, since the battery pack <NUM> includes the anti-noise member <NUM> attached to at least one portion of the adhesive surface <NUM> of the packaging member <NUM>, it is possible to prevent that noise is generated as the adhesive surface <NUM> of the packaging member <NUM> attached to the outer surface of the battery frame <NUM> is detached therefrom.

Referring to <FIG> and <FIG> again, the battery pack <NUM> may further include a battery management unit <NUM> that controls charging and discharging of at least one secondary battery <NUM>. Specifically, the battery management unit <NUM> may be disposed between the two or more secondary batteries <NUM>. For example, as shown in <FIG>, four secondary batteries <NUM> may be accommodated in the battery frame <NUM> with the battery management unit <NUM> being disposed at the center thereof.

In addition, the battery management unit <NUM> may include a printed circuit board <NUM>. Also, the printed circuit board <NUM> may include a connection portion (not shown) to which the electrode lead <NUM> of the secondary battery <NUM> and the current blocking member <NUM> may be electrically and mechanically connected. Further, the battery management unit <NUM> may include an element (not shown) capable of controlling the charge/discharge voltage and/or current of the secondary battery <NUM> or an element (not shown) capable of protecting the secondary battery <NUM> from being overcharged and/or overdischarged. Moreover, an external power connector <NUM> may be coupled to one side of the printed circuit board <NUM> of the battery management unit <NUM> and extend outward, and the external power connector <NUM> may be electrically connected to an external device.

Further, a control accommodation portion <NUM> having a space recessed to accommodate the battery management unit <NUM> may be formed at the battery frame <NUM>. For example, the control accommodation portion <NUM> may be formed at one side of the battery accommodation portion <NUM> of the battery frame <NUM>. In addition, if a plurality of secondary batteries <NUM> are provided, the control accommodation portion <NUM> may be formed between the plurality of battery accommodation portions <NUM> of the battery frame <NUM>.

Further, the anti-noise member <NUM> may be formed at a portion of the adhesive member surface <NUM> of the packaging member <NUM>, which faces the battery management unit <NUM>. That is, in the control accommodation portion <NUM> in which the battery management unit <NUM> is accommodated, a region where a gap is generated between the body portion <NUM> of the packaging member <NUM> and the battery management unit <NUM> or the control accommodation portion <NUM> may be distributed most. Thus, the adhesive surface <NUM> of the packaging member <NUM> of the battery pack <NUM> is easily attached to or detached from the battery frame <NUM> in the control accommodation portion <NUM>.

For example, as shown in <FIG>, the anti-noise member <NUM> may be attached to a central portion of the adhesive surface <NUM> of the packaging member <NUM>, which faces the battery management unit <NUM>. In addition, the anti-noise member <NUM> may be shaped to cover an upper surface of the control accommodation portion <NUM>.

Thus, according to this configuration of the present disclosure, since the anti-noise member <NUM> is formed in a portion of the adhesive surface <NUM> of the packaging member <NUM>, which corresponds to the control accommodation portion <NUM> accommodating the battery management unit <NUM> where noise is frequently generated noise, it is possible to significantly reduce the noise generated by the battery pack <NUM>. Accordingly, the electronic device including the battery pack <NUM> may be used conveniently.

<FIG> is a partial sectioned view schematically showing a portion of the battery pack, taken along the line C-C' of <FIG>.

Referring to <FIG> together, the anti-noise member <NUM> may have a ridged portion 260b protruding downward from the fixed surface 260a adhered to the adhesive surface <NUM> of the packaging member <NUM>. In addition, the ridged portion 260b may protrusively extend to be in close contact with the outer surface of the battery management unit <NUM>. More specifically, the ridged portion 260b may be configured to contact the upper surface of the printed circuit board <NUM> included in the battery management unit <NUM> and the upper surface of the control accommodation portion <NUM> of the battery frame <NUM>. For example, the ridged portion 260b of the anti-noise member <NUM> may have a block form made of fiber, rubber or silicon material.

For example, as shown in <FIG>, the anti-noise member <NUM> may have the ridged portion 260b extending downward from the fixed surface 260a. In addition, the ridged portion 260b may be configured to be in close contact with the upper surface of the printed circuit board <NUM> located therebelow.

Thus, according to this configuration of the present disclosure, since the anti-noise member <NUM> has the ridged portion 260b formed to be in close contact with the battery management unit <NUM>, the gap that may be generated between the packaging member <NUM> and the battery management unit <NUM> may be reduced as much as possible. Accordingly, the noise generated from the battery pack <NUM> may be effectively reduced.

<FIG> is a partial sectioned view schematically showing a portion of the battery pack, taken along the line D-D' of <FIG>.

Referring to <FIG> along with <FIG>, an uneven structure <NUM> dented and protruding according to the shape of the outer surface of the battery management unit <NUM> may be formed at the ridged portion 260b of the anti-noise member 260B. In addition, the control accommodation portion <NUM> of the battery frame <NUM> may have a fixing protrusion 215P formed to protrude toward the printed circuit board <NUM> so as to prevent the printed circuit board <NUM> of the battery management unit <NUM> from being detached to the outside.

For example, as shown in <FIG>, the uneven structure <NUM> dented and protruding according to the shape of the outer surface of the fixing protrusion 215P may be formed at the ridged portion 260b of the anti-noise member 260B.

Thus, according to this configuration of the present disclosure, since the uneven structure <NUM> is formed in the ridged portion 260b of the anti-noise member 260B configured to closely contact the battery management unit <NUM>, it is possible to reduce the gap that may be formed between the packaging member <NUM> and the printed circuit board <NUM> of the battery management unit <NUM> as much as possible. Accordingly, the noise generated from the battery pack <NUM> may be further reduced.

<FIG> is a partial sectioned view schematically showing a portion of a battery pack according to another embodiment of the present disclosure.

Referring to <FIG>, a thermally conductive material <NUM> may be added between the anti-noise member 260c and the battery management unit <NUM> so that no gap is created therebetween.

Further, the thermally conductive material <NUM> may include a polymer resin or a silicone-based resin with high thermal conductivity, and a filler. For example, the polymer resin may be a polysiloxane resin, a polyamide resin, a urethane resin, or an epoxy resin. In addition, for example, the thermally conductive material <NUM> may include an electrically insulating material such as a urethane resin or a silicone resin. Further, the filler may be a metal component such as aluminum or copper with high thermal conductivity.

For example, as shown in <FIG>, the thermally conductive material <NUM> may be interposed between the anti-noise member 260c and the battery management unit <NUM> mounted to the battery frame <NUM> so that no gap is created therebetween. That is, the thermally conductive material <NUM> may be added to surround a portion of the outer surface of the printed circuit board <NUM> and the fixing protrusion 215P.

Thus, according to this configuration of the present disclosure, if the thermally conductive material <NUM> is added to be interposed between the anti-noise member 260c and the battery management unit <NUM>, an empty space that may be generated between the anti-noise member 260c and the battery management unit <NUM> may be minimized, thereby preventing the noise from being generated due to the empty space in advance and reducing the amount of air occupied in the empty space. In addition, since the thermal conductivity of the heat generated from the secondary battery <NUM> may be significantly increased, it is possible to improve the cooling efficiency of the battery pack <NUM>.

<FIG> is a partial perspective view schematically showing a battery frame, employed at the battery pack according to an embodiment of the present disclosure.

Referring to <FIG>, according to the invention, at least one dented groove <NUM> recessed onward is formed at the horizontal (x-y direction) outer surface 211c of the outermost edge <NUM> of the battery frame <NUM>. In addition, the dented groove <NUM> extends in an edge direction of the outermost edge <NUM>. Moreover, when viewed in the F direction (toward the front) of <FIG>, the dented groove <NUM> may have an ellipse shape.

Further, two or more dented grooves <NUM> may be formed at the horizontal (x-y direction) outer surface 211c of the outermost edge <NUM> of the battery frame <NUM>. In addition, the two or more dented grooves <NUM> may be formed to be spaced apart from each other by a predetermined distance.

For example, as shown in <FIG> along with <FIG>, four outer surfaces 211c may be formed at the outermost edge <NUM> of the battery frame <NUM>. In addition, a pair of dented grooves <NUM> spaced apart from each other by a predetermined distance may be formed at each of the four outer surfaces 211c.

Thus, according to this configuration of the present disclosure, the dented groove <NUM> formed at the battery frame <NUM> may reduce the weight of the battery frame <NUM>, thereby reducing the weight of the battery pack <NUM>.

<FIG> is a partial sectioned view schematically showing a portion of the battery pack, taken along the line A-A' of <FIG>.

Referring to <FIG> along with <FIG>, according to the invention the anti-noise member <NUM> is formed at a portion of the adhesive surface <NUM> of the packaging member <NUM>, which faces the dented groove <NUM>. Specifically, the anti-noise member <NUM> may have a size that may be at least partially inserted into the dented groove <NUM> or may have a larger size than the dented groove <NUM>.

For example, as shown in <FIG>, two dented grooves <NUM> may be spaced apart by a predetermined distance in the vertical direction at the horizontal outer surface of the outermost edge <NUM> of the battery frame <NUM>, and the two anti-noise members <NUM> may be formed to face the two dented grooves <NUM>.

In addition, the anti-noise member <NUM> may be made of a very light material allowing easy shape deformation and fill the inner space of the dented groove <NUM>. Moreover, the anti-noise member <NUM> may be in the form of a flat sheet covering the outer periphery of the dented groove <NUM>.

For example, as shown in <FIG>, two anti-noise members <NUM> in the form of a flat sheet may be formed to face the outer periphery of the two dented grooves <NUM>, respectively.

Thus, according to the invention since the anti-noise member <NUM> is added at a position corresponding to the dented groove <NUM>, it is possible to prevent that noise is generated as the outermost edge <NUM> of the battery frame <NUM> is distorted and thus the dented groove <NUM> and the packaging member <NUM> are attached and detached. Thus, the convenience in use of the product may be increased.

<FIG> is a partial perspective view schematically showing a battery frame, employed at a battery pack according to another embodiment of the present disclosure.

Referring to <FIG>, at least one rib 210r may be formed at the dented groove <NUM> of the battery frame 210B. Specifically, the rib 210r may protrude outward. Also, the rib 210r may extend from one inner side of the dented groove <NUM> to the other inner side thereof.

For example, as shown in <FIG>, when viewed in the F direction of <FIG>, the two dented grooves <NUM> formed at the battery frame 210B may have a plurality of ribs 210r protruding outward and extending from an upper side of the inside of the two dented grooves <NUM> to a lower side thereof.

Thus, according to this configuration of the present disclosure, the mechanical rigidity of the outermost edge <NUM> of the battery frame 210B that is thinned due to the dented groove <NUM> formed at the battery frame 210B may be compensated with the formed at least one rib 210r. Accordingly, the durability of the battery pack <NUM> may be improved.

Meanwhile, referring to <FIG> along with <FIG>, the battery frame <NUM> may include two or more secondary batteries <NUM>. In addition, a barrier <NUM> may be formed in the battery accommodation portion <NUM> of the battery frame <NUM> so that the two or more secondary batteries <NUM> are separately accommodated therein. Further, the barrier <NUM> may extend from one inner side 211c1 of the battery frame <NUM> to the other inner side 211c2 thereof. That is, the barrier <NUM> may extend from one inner side 211c1 of the outermost edge <NUM> to the other inner side 211c2 thereof to partition the internal space of the battery accommodation portion <NUM> included in the battery frame <NUM>.

In addition, the vertical height H1 of the barrier <NUM> may be lower than the height of the upper portion of the two or more secondary batteries <NUM> accommodated in the battery frame <NUM>. Also, the vertical height H1 of the barrier <NUM> may be lower than the height H3 of the upper side of the outermost edge <NUM> of the battery frame <NUM>.

For example, as shown in <FIG> and <FIG>, the battery frame <NUM> may have the battery accommodation portion <NUM> to accommodate four secondary batteries <NUM>. Also, the battery frame <NUM> may have the barrier <NUM> extending from one inner side 211c1 of the outermost edge <NUM> of the battery frame <NUM> to the other inner side 211c2 thereof so that the two secondary batteries <NUM> are accommodated in each partitioned area.

Further, the vertical height H1 of the barrier <NUM> may be lower than the height of the upper portion of the secondary battery <NUM> accommodated in the battery accommodation portion <NUM>. In addition, the vertical height H1 of the barrier <NUM> may be lower than the height H3 of the outermost edge <NUM> of the battery frame <NUM>.

Thus, according to this configuration of the present disclosure, since the vertical height H1 of the barrier <NUM> is lower than the height of the upper portion of the secondary battery <NUM> accommodated in the battery accommodation portion <NUM>, the packaging member <NUM> is located to be spaced apart from the barrier <NUM> in the upper direction, and it is possible to reduce the noise generated by attachment and detachment of the packaging member <NUM>.

That is, when viewed in the F direction (shown in <FIG>), the position of the barrier <NUM> formed at the center of the battery frame <NUM> in the front and rear direction (y direction) is a place where the battery frame <NUM> is deformed frequently due to distortion. Thus, by preventing the barrier <NUM> and the packaging member <NUM> from being adhered to each other in advance, it is possible to prevent noise from being generated due to attachment and detachment of the packaging member <NUM>.

<FIG> is a bottom schematically showing a packaging member, employed at the battery pack according to another embodiment of the present disclosure.

Referring to <FIG> along with <FIG> and <FIG>, a battery pack (not shown) according to another embodiment of the present disclosure may include another anti-noise member <NUM> in addition to the anti-noise member <NUM> formed at a position facing the battery management unit <NUM>.

Specifically, the anti-noise member <NUM> may be formed on at least a portion of the adhesive surface <NUM> of the packaging member <NUM>, which faces the barrier <NUM>. Specifically, the anti-noise member <NUM> is formed at a position facing the barrier <NUM> that extends from one inner side of the outermost edge <NUM> of the battery frame <NUM> to the other inner side thereof so that the two or more secondary batteries <NUM> are separately accommodated.

For example, as shown in <FIG>, the anti-noise member <NUM> may be formed at a position on the adhesive surface <NUM> of the packaging member <NUM>, which corresponds to each of the two barriers <NUM> formed in the battery accommodation portion <NUM> of the battery frame <NUM>. In addition, the anti-noise member <NUM> may have a strip shape extending in the left and right direction.

Thus, according to this configuration of the present disclosure, since the anti-noise member <NUM> is formed on at least a portion of the adhesive surface <NUM> of the packaging member <NUM>, which faces the barrier <NUM>, it is possible to prevent the barrier <NUM> from contacting the adhesive surface <NUM> of the packaging member <NUM> in advance. Accordingly, by preventing the barrier <NUM> from contacting the packaging member <NUM>, it is possible to reduce noise generated due to attachment and detachment of the packaging member <NUM> to/from the upper side of the barrier <NUM>.

Meanwhile, referring to <FIG>, <FIG> and <FIG> again, the fixing portion <NUM> of the packaging member <NUM> may be bent and extended downward from the body portion <NUM>. In addition, a terminal 254a of the fixing portion <NUM> may be bent and extended inward (I) so that the adhesive surface <NUM> (<FIG>) is attached to the lower surface of the secondary battery <NUM>.

In addition, a support <NUM> protrusively extending inward (I) may be formed on the inner surface 212a of the inner space of the battery accommodation portion <NUM>. Further, the support <NUM> may support the lower portion of the secondary battery <NUM> upward.

For example, as shown in <FIG>, the support <NUM> protrusively extending inward may be formed along the outermost edge <NUM> of the battery frame <NUM>. In this case, the support <NUM> may be formed at a position that supports the lower portion of the secondary battery <NUM> upward.

Here, the support <NUM> may generate a momentum for supporting the secondary battery <NUM> upward, and the fixing portion <NUM> of the packaging member <NUM> attached to the lower surface of the secondary battery <NUM> may generate a momentum for pressing the secondary battery <NUM> downward. In addition, since the two momentums are applied in opposite directions, the forces of the two momentums may be offset by each other. Accordingly, it is possible to prevent the outermost edge <NUM> of the battery frame <NUM> from being frequently deformed, thereby preventing noise generated by the deformation of the battery frame <NUM> and improving the durability of the battery frame <NUM>.

Thus, according to this configuration of the present disclosure, since the fixing portion <NUM> of the packaging member <NUM> is attached to the lower surface of the secondary battery <NUM> and the support <NUM> supports the secondary battery <NUM> upward, the vertical stress caused by the weight of the secondary battery <NUM> mounted to the battery frame <NUM> may be offset, thereby improving the durability of the battery frame <NUM>.

<FIG> is a partial sectioned view schematically showing a portion of a battery pack according to still another embodiment of the present disclosure.

Referring to <FIG>, the fixing portion 254B of the packaging member 250B may be formed to be attached to the inner surface of the support <NUM> formed on the inner surface 212a of the inner space of the battery accommodation portion <NUM>.

For example, as shown in <FIG>, the fixing portion 254B of the packaging member 250B may be bent and extended toward the inner side of the battery frame <NUM>, and the bent and extended end is bent outward again and attached to an inner surface 217a of the support <NUM>. In addition, an end of the fixing portion 254B of the packaging member 250B may be interposed between the lower surface of the secondary battery <NUM> accommodated in the battery frame <NUM> and the upper surface of the support <NUM>.

Thus, according to this configuration of the present disclosure, since the fixing portion 254B of the packaging member 250B is attached to the inner surface of the support <NUM> formed at the battery frame <NUM>, if the packaging member 250B of <FIG> is used, the fixing portion 254B may be adhered to the battery frame <NUM> with an enhanced fixing force, compared to the case where the fixing portion <NUM> of the packaging member <NUM> is adhered to the lower surface of the secondary battery <NUM> as shown in <FIG>.

In addition, since a part of the fixing portion 254B of the packaging member 250B is interposed between the lower surface of the secondary battery <NUM> accommodated in the battery frame <NUM> and the upper surface of the support <NUM>, it is possible to enhance the fixing force of the fixing portion 254B of the packaging member 250B further.

In particular, if the anti-noise member <NUM> is attached to the packaging member 250B in a wide range, the fixing force between the packaging member 250B and the battery frame <NUM> may be deteriorated. However, since a part of the fixing portion 254B of the packaging member 250B is interposed between the lower surface of the secondary battery <NUM> accommodated in the battery frame <NUM> and the upper surface of the support <NUM>, the fixing force may be supplemented.

Moreover, an electronic device (not shown) according to the present disclosure may include the battery pack <NUM>. Also, the battery pack <NUM> may be accommodated in an external case of the electronic device. In this case, the electronic device may be configured to operate by receiving a power from the battery pack <NUM>. For example, the electronic device may include a connection connector for connecting with an external input/output terminal or a data connector of the battery pack <NUM> so that the electronic device may operate by receiving a power.

In addition, an electronic system according to the present disclosure may include the electronic device. Further, the electronic system may be, for example, an acoustic system, and the electronic device may be a notebook or a tablet PC. Thus, the electronic device may be configured to control the acoustic system.

Meanwhile, even though the terms indicating directions such as upper, lower, left, right, front and rear directions are used in the specification, it is obvious to those skilled in the art that these merely represent relative locations for convenience in explanation and may vary based on a location of an observer or an object.

Claim 1:
A battery pack (<NUM>), comprising:
at least one rechargeable secondary battery (<NUM>);
a battery frame (<NUM>) having a battery accommodation portion (<NUM>) configured to accommodate the at least one secondary battery (<NUM>);
a packaging member (<NUM>) provided in the form of an adhesion sheet having an adhesive surface (<NUM>) formed at one surface thereof, the packaging member (<NUM>) including a body portion (<NUM>) fixedly adhered to an upper portion of the secondary battery (<NUM>) accommodated in the battery frame (<NUM>) and a fixing portion (<NUM>) bent and extended downward from the body portion (<NUM>) and having an adhesive surface fixedly adhered to an outer surface of an outermost edge (<NUM>) of the battery frame (<NUM>); and
an anti-noise member (<NUM>, <NUM>, <NUM>) attached to at least one portion of the adhesive surface (<NUM>) of the packaging member (<NUM>),
characterized in that
at least one dented groove (<NUM>) recessed inward and extending along an edge direction of the outermost edge (<NUM>) is formed at a horizontal (x-y direction) outer surface (<NUM>) of the outermost edge (<NUM>) of the battery frame (<NUM>), and
the anti-noise member (<NUM>) is formed at a portion of the adhesive surface (<NUM>) of the packaging member (<NUM>), which faces the dented groove (<NUM>).