Patent Description:
Currently commercialized secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, the lithium secondary battery is in the spotlight since it has advantages such as free charging and discharging due to little memory effect compared to nickel-based secondary batteries, a very low self-discharge rate and a high energy density.

The lithium secondary battery mainly uses lithium-based oxide and carbon material as a positive electrode active material and a negative electrode active material, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate respectively coated with a positive electrode active material and a negative electrode active material are disposed with a separator being interposed therebetween, and a cylindrical battery can that seals the electrode assembly together with an electrolyte.

In recent years, secondary batteries are widely used not only in small devices such as portable electronic devices, but also in medium and large devices such as vehicles and power storage devices. When used in such a medium or large device, a large number of secondary batteries are electrically connected to increase capacity and output.

Meanwhile, as the need for a large-capacity structure increases along with use as an energy storage source in recent years, the demand for a battery pack including a number of secondary batteries electrically connected in series and/or in parallel, a module case containing the secondary batteries therein and battery management system (BMS) is increasing.

Also, the battery pack generally further includes an external housing having a metal material or reinforced plastic to protect or store a plurality of secondary batteries from external shocks, separate from the module case.

In addition, in some cases, a handle is provided to the external housing so that a user may move while picking up the battery pack. <CIT>, <CIT> and <CIT> disclose a battery with a handle.

However, in the conventional art, the handle provided to the exterior of the external housing is shaped to protrude outward. Thus, when the battery pack is accommodated, the handle may limit the accommodation space for the battery pack, and the handle is highly likely to interfere or collide with an external object, which may damage the handle.

Moreover, the conventional handle generally uses a hook structure made of metal or the like at a connection portion between the handle and the pack housing in order to simply restrain an end of the handle not to move more than a predetermined distance. However, when the user moves while picking up a heavy battery pack, the force caused by the weight of the battery pack is concentrated on the hook structure, so the coupling structure between the handle and the pack housing is easily destroyed. Accordingly, the durability of the battery pack is greatly deteriorated.

<CIT> discloses a battery power conversion system.

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 that is convenient in use and has improved durability.

In one aspect of the present disclosure, there is provided a battery pack, comprising:.

Also, the accommodation portion includes:.

Moreover, the handle bar is configured to be loaded on the stopper,.

In addition, the strap has a loop form connected integrally, and
a part of the strap is positioned inside the handle bar.

Also, the accommodation portion may have a slit in which the portions of the first extension and the second extension coupled to each other to overlap is inserted and fixed.

Moreover, the handle may further include:
an auxiliary support hinged to the handle bar such that the other end thereof is moved away from the handle bar by pivotal movement based on the hinged portion when the handle bar is drawn out of the accommodation portion by a user, and the other end of the auxiliary support moved by pivotal movement based on the hinged portion is supported on the stopper.

In addition, the stopper may include a holding protrusion shaped corresponding to the other end of the auxiliary support and protruding upward to restrain the pivotal movement of the other end of the auxiliary support based on the hinged portion.

Also, the accommodation portion may include:
an elastic member configured to elastically press a part of the strap upward or downward.

Further, when the handle is drawn out of the accommodation portion, the elastic member may be contracted by a predetermined distance to block the center portion between the extensions of the strap respectively extending from both ends of the handle bar not to move.

Moreover, in another aspect of the present disclosure, there is also provided an electronic device, comprising at least one battery pack.

Also, in another aspect of the present disclosure, there is also provided a vehicle, comprising at least one battery pack.

According to an embodiment of the present disclosure, since the pack housing is configured such that the handle bar is loaded therein and includes the accommodation portion configured such that the strap is embedded therein to be bent at least once when the handle bar is loaded, the strap of the handle accommodated in the pack housing may be accommodated in a bent shape, thereby minimizing the volume occupied by the strap, compared to the conventional case where a connection portion (a leg portion) of the handle is made of hard material. Accordingly, the battery pack of the same size may have a greater inner space, thereby effectively increasing the energy density of the battery pack.

Also, according to an embodiment of the present disclosure, since the accommodation portion includes the stopper that blocks the center portion between the extensions of the strap respectively extending from both ends of the handle bar not to move upward, compared with the conventional handle (not shown), when the handle bar is drawn out, the accommodation portion may effectively restrain the handle bar by the stopper not to move upward. At this time, since the bendable strap may maximize the area in close contact with the stopper, it is possible to effectively prevent the internal structure of the pack housing from being damaged or broken during the use of the handle.

In addition, according to an embodiment of the present disclosure, since the receiving space including the first magnetic body therein is provided below the stopper and the handle bar includes the second magnetic body configured to apply an attractive force to the first magnetic body by a magnetic force, the handle bar may be easily mounted in the accommodation portion. That is, the handle bar may be automatically fixed in position in the accommodation portion by means of the magnetic force of the first magnetic body and the second magnetic body. Accordingly, the convenience of use of the battery pack of the present disclosure may be greatly improved.

<FIG> is a perspective view schematically showing a battery pack according to an embodiment of the present disclosure. Also, <FIG> is an exploded perspective view schematically showing some components of the battery pack according to an embodiment of the present disclosure.

Referring to <FIG> and <FIG>, a battery pack <NUM> of the present disclosure includes a battery module <NUM> and a pack housing <NUM>.

The battery module <NUM> includes a plurality of secondary batteries <NUM>, and may include a module case <NUM>, and a bus bar <NUM>.

Here, the plurality of secondary batteries <NUM> may be can-type secondary batteries <NUM>. Here, the secondary battery <NUM> may include an electrode assembly (not shown) therein.

The electrode assembly may have a structure in which a positive electrode plate and a negative electrode plate are wound with a separator being interposed therebetween. Also, a positive electrode tab may be attached to the positive electrode plate to be connected to a cap assembly, and a negative electrode tab may be attached to the negative electrode plate to be connected to a bottom of a battery can.

The battery can may have an empty space formed therein to accommodate the electrode assembly. In particular, the battery can may be configured in a cylindrical or rectangular shape, with an open top. In addition, the battery can may be made of a metal material such as steel or aluminum to secure rigidity. Also, the negative electrode tab may be attached to the bottom of that the battery can so that not only the bottom of the battery can but also the entire battery can functions as a negative electrode terminal.

The configuration of the secondary battery <NUM> is widely known to those skilled in the art at the time of filing this application, and thus will not be described in detail in this specification. In addition, although an example of the secondary battery <NUM> is shown in <FIG>, the battery module <NUM> according to the present disclosure is not limited to a configuration of a secondary battery <NUM> of a specific type. That is, various secondary batteries <NUM> known at the time of filing this application may be employed in the battery module <NUM> according to the present disclosure.

Moreover, the secondary battery <NUM> of <FIG> is depicted as a cylindrical secondary battery <NUM>, but a rectangular secondary battery may also be applied to the battery module <NUM> according to the present disclosure.

Referring to <FIG> again, the plurality of secondary batteries <NUM> may be arranged in a left and right direction (an X-axis direction) and an upper and lower direction (a Z-axis direction). For example, as shown in <FIG>, the plurality of secondary batteries <NUM> may be arranged in an upper and lower direction and a left and right direction. Moreover, the plurality of secondary batteries <NUM> may be arranged such that portions formed in a tubular shape in the cylindrical battery may face each other.

In particular, in the battery module <NUM> according to the present disclosure, the plurality of secondary batteries <NUM> may be configured to be laid down in a horizontal direction (a Y-axis direction). Here, the horizontal direction refers to a direction parallel to the ground. That is, as shown in <FIG>, each of <NUM> secondary batteries <NUM> may be configured to be elongated in the front and rear direction. At this time, electrode terminals <NUM> may be provided at both ends of the entire secondary battery <NUM> in the front and rear direction (the Y-axis direction). For example, a positive electrode terminal 111a and a negative electrode terminal 111b may be positioned at front and rear sides of the secondary battery <NUM>, respectively.

Meanwhile, terms representing 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 explanation, the directions such as front, rear, left, right, upper and lower are distinguishably expressed by setting the negative and positive directions in the Y-axis direction of <FIG> as front and rear directions, setting the negative and positive directions in the X-axis direction as left and right directions, and setting the positive and negative directions in the Z-axis direction as upper and lower directions.

Referring to <FIG>, the module case <NUM> may include a first case <NUM> and a second case <NUM>. The first case <NUM> may be configured such that a second case <NUM> is stacked at the rear thereof. For example, as shown in <FIG>, when viewed from the Y-axis direction, the battery module <NUM> may include a first case <NUM> and a second case <NUM> located at the rear of the first case <NUM>. Each of the first case <NUM> and the second case <NUM> may have a hollow H1 formed therein so that a part of the secondary battery <NUM> is inserted therein.

In addition, the module case <NUM> may include an outer wall configured to form an inner space therein to accommodate the plurality of secondary batteries <NUM>. Thus, since the module case <NUM> of the present disclosure includes the outer wall, the plurality of secondary batteries <NUM> accommodated therein may be effectively protected from external impact.

In addition, at least two or more secondary batteries <NUM> may be accommodated in the inner space of the module case <NUM> to be laid down in the horizontal direction (the Y-axis direction). The stacking direction is not limited to one direction, and the stacking direction may be an upper and lower direction (the Z-axis direction) depending on the direction in which the secondary batteries <NUM> are laid down.

Therefore, according to this configuration of the present disclosure, since the module case <NUM> blocks the side of the secondary batteries <NUM> not to be exposed, the insulation of the secondary battery <NUM> is improved, and the secondary batteries <NUM> may be protected from external physical and chemical factors.

Meanwhile, referring again to <FIG> along with <FIG>, the bus bar <NUM> may electrically connect between the plurality of secondary batteries <NUM>, for example between all of the secondary batteries <NUM> or between some of the secondary batteries <NUM>. To this end, at least a part of the bus bar <NUM> may be made of an electrically conductive material. For example, the bus bar <NUM> may be made of a metal material such as copper, aluminum, nickel, or the like. Moreover, the bus bar <NUM> may have a structure in which two plates using different main materials are joined. For example, the bus bar <NUM> may have a form in which a bus bar plate made of nickel and a bus bar plate made of copper main material are joined.

In particular, in the present disclosure, as shown in <FIG>, the bus bar <NUM> may include a body portion <NUM> and a connection portion <NUM>.

The body portion <NUM> of the bus bar <NUM> may have a plate shape. Moreover, the bus bar <NUM> may be configured in the form of a metal plate to ensure rigidity and electrical conductivity. In particular, the body portion <NUM> may be configured to be erected in the upper and lower direction (the Z-axis direction in the drawing) along the electrode terminals <NUM> of the plurality of secondary batteries <NUM>.

That is, in the present disclosure, if the plurality of secondary batteries <NUM> are arranged in the left and right direction (the X-axis direction in the drawing) and/or the upper and lower direction (the Z-axis direction in the drawing) in a laid-down form elongated in the front and rear direction (the Y-axis direction in the drawing), the electrode terminals <NUM> of several secondary batteries <NUM> may be arranged in parallel in the front and rear direction (the Y-axis direction) and the upper and lower direction. In this case, the body portion <NUM> may be formed to extend flatly in the left and right direction and the upper and lower direction in a plate shape according to the arrangement direction of the electrode terminals <NUM> of the plurality of secondary batteries <NUM> and may be erected with respect to the ground.

Further, external terminals <NUM> may be provided at left and right sides of the body portion <NUM> of the bus bar to sense a voltage by a sensing member (not shown) or transmit power to the outside.

In addition, the bus bar <NUM> may contact the plurality of secondary batteries <NUM> of the same polarity to electrically connect them in parallel. Alternatively, the bus bar <NUM> may contact electrode terminals <NUM> of some secondary batteries <NUM> among all secondary batteries <NUM> to electrically connect them in parallel and in series.

Further, an insulation sheet <NUM> with electrical insulation may be provided to an outer surface of the bus bar <NUM>. For example, as shown in <FIG>, two insulation sheets <NUM> may be provided to a front surface of the bus bar <NUM> located at the front side and a rear surface of the bus bar <NUM> located at the front side, respectively.

Meanwhile, referring to <FIG> and <FIG> again, the pack housing <NUM> may have a rectangular box shape as a whole. The pack housing <NUM> may include a front housing <NUM> and a rear housing <NUM>. Specifically, a rear end of the front housing <NUM> may be coupled with a front end of the rear housing <NUM>. At this time, the front housing <NUM> and the rear housing <NUM> may be coupled to each other by, for example, bolting.

<FIG> is a partial perspective view schematically showing some components of the battery pack according to an embodiment of the present disclosure. In <FIG>, the rear housing <NUM> and the handle <NUM> are depicted.

Referring to <FIG> along with <FIG>, the pack housing <NUM> includes an outer wall <NUM> and may include an inner wall <NUM> configured to form an inner space for accommodating the battery module <NUM>. For example, the pack housing <NUM> may include an inner upper wall 313a for covering an upper portion of the module case <NUM> accommodated therein and left and right outer walls <NUM> for covering left and right sides of the module case <NUM>.

According to the invention, the pack housing <NUM> includes a handle <NUM>. The handle <NUM> may be provided at an upper portion of the pack housing <NUM>. The handle <NUM> includes a handle bar <NUM> and a strap <NUM>. The handle bar <NUM> may have any shape that may be easily gripped by a human hand. For example, the handle bar <NUM> may be in the form of a bar elongated in one direction (the left and right direction). The strap <NUM> is configured in the form of a bendable band. The strap <NUM> is shaped to extend from each of both ends of the handle bar <NUM>. For example, the strap <NUM> may have a flexible and tough material. For example, the strap <NUM> may be made of nylon.

In addition, the pack housing <NUM> has an accommodation portion <NUM> for accommodating the handle <NUM>. Specifically, the accommodation portion <NUM> may have a plane 316a configured so that the handle bar <NUM> is loaded thereon. For example, the plane 316a may be a part of a top surface of the pack housing <NUM>, which is indented inward further to the other part of the top surface of the pack housing <NUM> and is flattened in a horizontal direction.

Moreover, the accommodation portion <NUM> has an accommodation space <NUM> configured so that the strap <NUM> is embedded therein in a state of being bent at least once when the handle bar <NUM> is loaded therein. In other words, since the strap <NUM> has a bendable strap shape, the strap <NUM> connected to the lower portion of the handle bar <NUM> may be inserted into the accommodation space <NUM> in the lower direction and embedded therein, when the handle bar <NUM> is loaded in the accommodation portion <NUM> in the lower direction. In this case, the strap <NUM> may be bent at least once and embedded in the accommodation space <NUM>.

Therefore, according to this configuration of the present disclosure, since the pack housing <NUM> is configured such that the handle bar <NUM> is loaded therein and includes the accommodation portion <NUM> configured such that the strap <NUM> is embedded therein to be bent at least once when the handle bar <NUM> is loaded, the strap <NUM> of the handle <NUM> accommodated in the pack housing <NUM> may be accommodated in a bent shape, thereby minimizing the volume occupied by the strap <NUM>, compared to the conventional case where a connection portion (a leg portion) of the handle <NUM> is made of hard material. Accordingly, the battery pack <NUM> of the same size may have a greater inner space, thereby effectively increasing the energy density of the battery pack <NUM>.

<FIG> is a perspective view schematically showing a handle, employed at the battery pack according to an embodiment of the present disclosure. <FIG> is a partial perspective view schematically showing only some components of the battery pack according to an embodiment of the present disclosure. Also, <FIG> is a partial perspective view schematically showing that the handle of a battery pack according to another embodiment of the present disclosure is drawn out.

Referring to <FIG>, the accommodation portion <NUM> is configured such that, when the handle bar <NUM> is drawn out, a center portion P1 between extensions of the strap <NUM> respectively extending from both ends of the handle bar <NUM> and moving upward is caught in the accommodation portion <NUM>. Specifically, the accommodation portion <NUM> includes a stopper <NUM> for blocking the center portion P1 between the extensions of the strap <NUM> respectively extending from both ends of the handle bar <NUM> not to move upward. That is, both ends and the central portion of the stopper <NUM> may be configured such that the center portion P1 between the extensions of the strap <NUM> respectively extending from both ends of the handle bar <NUM> are caught. In other words, the center portion P1 of the strap <NUM> may be configured not to be moved upward by the stopper <NUM>.

Therefore, according to this configuration of the present disclosure, since the accommodation portion <NUM> includes the stopper <NUM> that blocks the center portion P1 between the extensions of the strap <NUM> respectively extending from both ends of the handle bar <NUM> not to move upward, compared with the conventional handle (not shown), when the handle bar <NUM> is drawn out, the accommodation portion <NUM> may effectively restrain the handle bar <NUM> by the stopper <NUM> not to move upward. At this time, since the bendable strap <NUM> may maximize the area in close contact with the stopper <NUM>, it is possible to effectively prevent the internal structure of the pack housing <NUM> from being damaged or broken during the use of the handle <NUM>.

Meanwhile, referring to <FIG> and <FIG>, a receiving space <NUM> be provided below the stopper <NUM> such that a first magnetic body 330a is embedded therein. In addition, the handle bar <NUM> include a second magnetic body 330b configured to apply an attractive force to the first magnetic body 330a by a magnetic force. In this case, the first magnetic body 330a and the second magnetic body 330b may be provided at positions corresponding to each other.

That is, when the handle bar <NUM> is mounted on the stopper <NUM>, the first magnetic body 330a embedded in the receiving space <NUM> and the second magnetic body 330b provided to the handle bar <NUM> may be located close to each other such that the handle bar <NUM> is fixed onto the stopper <NUM>. That is, as shown in the <FIG>, the receiving space <NUM> for accommodating the first magnetic body 330a may be located at the center of the stopper <NUM>. In addition, as shown in <FIG>, the second magnetic body 330b may be located at the inner center of the handle bar <NUM>.

Therefore, according to this configuration of the present disclosure, since the receiving space <NUM> including the first magnetic body 330a therein is provided below the stopper <NUM> and the handle bar <NUM> includes the second magnetic body 330b configured to apply an attractive force to the first magnetic body 330a by a magnetic force, the handle bar <NUM> may be easily mounted in the accommodation portion <NUM>. That is, the handle bar <NUM> may be automatically fixed in position in the accommodation portion <NUM> by means of the magnetic force of the first magnetic body 330a and the second magnetic body 330b. Accordingly, the convenience of use of the battery pack <NUM> of the present disclosure may be greatly improved.

Referring to <FIG> and <FIG> again, the strap <NUM> has a loop form connected integrally. Both ends of the strap <NUM> may be coupled to each other in a state of overlapping with each other. At this time, both ends of the strap <NUM> may be coupled to each other by bolting.

For example, as shown in <FIG> and <FIG>, the strap <NUM> may include a first extension 324a extending from one longitudinal end of the handle bar <NUM> and a second extension 324b extending from the other longitudinal end of the handle bar <NUM> and having one end coupled to one end of the first extension 324a to overlap with the end. Also, remaining portion (or, an upper portion) 324c of the strap <NUM> may be positioned inside the handle bar <NUM>. The upper portion 324c of the strap <NUM> may be positioned inside the handle bar <NUM>. In addition, at least a part of the upper portion 324c of the strap <NUM> may be fixed inside the handle bar <NUM>.

Therefore, according to this configuration of the present disclosure, since the strap <NUM> has an integrally connected loop form and a part of the strap <NUM> is positioned inside the handle bar <NUM>, the strap <NUM> may be provided in an integral form. The integrated strap <NUM> may be much more durable, compared to a strap in a separated form.

Referring to <FIG> and <FIG> again, the accommodation portion <NUM> may have a slit L1 in which the ends of the first extension 324a and the second extension 324b of the strap <NUM> coupled to each other to overlap with each other is inserted and fixed. The slit L1 may be located below the center of the stopper <NUM>. The slit L1 may be a space separated apart between a rib-shaped partition wall formed in the accommodation space <NUM> and the stopper <NUM>. In addition, the space formed by the slit L1 may have a height corresponding to or somewhat smaller than the vertical thickness of the overlapped portions of the first extension 324a and the second extension 324b.

Therefore, according to this configuration of the present disclosure, since the accommodation portion <NUM> has the slit L1 in which the overlapped and coupled portions of the first extension 324a and the second extension 324b are inserted and fixed, the strap <NUM> may be easily fixed to the accommodation portion <NUM>. Therefore, it is possible to increase the manufacturing efficiency of the battery pack <NUM>.

In addition, referring to <FIG>, a strap 324A according to another embodiment may further include a fixing protrusion 316p provided to each of the first extension 324a and the second extension 324b. The fixing protrusion 316p may be configured to prevent the first extension 324a and the second extension 324b of the strap <NUM> from moving in the left and right direction. The fixing protrusion 316p may be configured to be caught by the outer surface of the slit L1 not to move. For example, as shown in <FIG>, the fixing protrusion 316p may be provided at each of a distal end of the first extension 324a and a distal end of the second extension 324b.

Therefore, according to this configuration of the present disclosure, since the strap <NUM> includes the fixing protrusion 316p provided to each of the first extension 324a and the second extension 324b, the lower portion of the strap <NUM> may be more completely fixed to the accommodation portion <NUM>. Accordingly, it is possible to prevent a part of the strap <NUM> from being moved or separated from the slit L1, thereby increasing the convenience of use of the battery pack <NUM> and reducing a failure of the handle.

<FIG> is a partial perspective view schematically showing some components of the battery pack according to another embodiment of the present disclosure. Also, <FIG> is a partial front view schematically showing some components of the battery pack of <FIG> shows a state where an auxiliary support <NUM> is pivoted, for convenience of explanation.

Referring to <FIG>, a battery pack 300A of <FIG> may further include an auxiliary support <NUM>, compared to the battery pack <NUM> of <FIG>. That is, the battery pack 300A of <FIG> has the same configurations as the battery pack <NUM> of <FIG> except for the auxiliary support <NUM>.

Specifically, the auxiliary support <NUM> may be configured such that, when the handle bar <NUM> is drawn out of the accommodation portion <NUM> by a user, the other end of the auxiliary support <NUM> is moved away from the handle bar <NUM> by pivotal movement based on a hinged portion. The auxiliary support <NUM> may have a structure hinged to the handle bar <NUM>.

For example, as shown in <FIG>, two auxiliary supports <NUM> may be provided to the handle <NUM>. The two auxiliary supports <NUM> may be embedded in the handle bar <NUM> when the handle bar <NUM> is accommodated in the accommodation portion <NUM>. Conversely, if the handle bar <NUM> is drawn out from the accommodation portion <NUM>, the two auxiliary supports <NUM> may be configured to be pivoted outward in left and right directions with respect to a center between the two auxiliary supports <NUM>.

In addition, the auxiliary support <NUM> may be configured such that the other end pivotally moved is supported upward on the stopper <NUM> by the upper surface of the stopper <NUM>. Accordingly, the auxiliary support <NUM> may serve to support the handle bar <NUM> upward. Moreover, if two auxiliary supports <NUM> are provided, it is possible to prevent the handle bar <NUM> from moving in the left and right direction. That is, for example, as shown in <FIG>, the auxiliary support <NUM> located at the left side may prevent the handle bar <NUM> from moving to the right, and the auxiliary support <NUM> located at the right side may prevent the handle bar <NUM> from moving to the left.

Therefore, according to this configuration of the present disclosure, since the auxiliary support <NUM> is further provided to be hinged to the handle bar <NUM> such that, if the handle bar <NUM> is drawn out of the accommodation portion <NUM> by the user, the other end of the auxiliary support <NUM> is moved away from the handle bar <NUM> by pivotal movement based on the hinged portion and the other end of the auxiliary support <NUM> moved by pivotal movement based on the hinged portion is supported on the stopper <NUM>, when the strap <NUM> is configured to be bendable or is made of a flexible material, it is possible to prevent the handle bar <NUM> from seriously moving while the battery pack is carried. Accordingly, it is possible to effectively reduce shaking of the battery pack 300A that may be caused while the user is holding the handle <NUM> and carrying the battery pack 300A.

In addition, the stopper <NUM> may include a holding protrusion <NUM> to restrain the pivotal movement of the other end of the auxiliary support <NUM> based on the hinged portion. The holding protrusion <NUM> may be shaped corresponding to the other end of the auxiliary support <NUM>. For example, the holding protrusion <NUM> may be configured to surround a part of the other end of the auxiliary support <NUM>. For example, as shown in <FIG>, the holding protrusion <NUM> may have a plate shape in the form of '⊂'. That is, the holding protrusion <NUM> may include a portion extending in the front and rear direction and portions extending in the left and right direction from both front and rear ends of the portion extending in the front and rear direction.

An insert groove (not shown) formed by recessing a portion of the handle bar <NUM> may be provided at a lower portion of the handle bar <NUM> so that at least a part of the holding protrusion <NUM> is inserted therein. The insert groove may be configured such that when the handle bar <NUM> is loaded on the stopper <NUM>, at least a part of the holding protrusion <NUM> is inserted therein. The handle bar <NUM> may be loaded in place on the stopper <NUM> by the insert groove.

Therefore, according to this configuration of the present disclosure, since the stopper <NUM> includes the holding protrusion <NUM> protruding upward with a shape corresponding to the other end of the auxiliary support <NUM> to restrain the pivotal movement of the other end of the auxiliary support <NUM> based on the hinged portion, the other end of the auxiliary support <NUM> may be stably fixed on the stopper <NUM>. Moreover, if the holding protrusion <NUM> is inserted into the insert groove provided to the handle bar <NUM>, it is possible to guide the handle bar <NUM> to be loaded in place on the stopper <NUM>. Therefore, the convenience of use of the battery pack 300A of the present disclosure may be greatly improved.

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

Referring to <FIG>, when compared with the battery pack <NUM> of <FIG>, a battery pack 300B of <FIG> may further include an elastic member <NUM> in the accommodation portion <NUM>. The elastic member <NUM> may be configured to elastically press a part of the strap <NUM> upward or downward. When the strap <NUM> is embedded in the accommodation space <NUM>, the elastic member <NUM> may press a part of the strap <NUM> so that the strap <NUM> is bent automatically. For example, as shown in <FIG>, two elastic members <NUM> may be provided in the accommodation portion <NUM>. Each of the two elastic members <NUM> may be configured to press a part of the strap <NUM> downward.

Therefore, according to this configuration of the present disclosure, since the accommodation portion <NUM> includes the elastic member <NUM> configured to elastically press a part of the strap <NUM> upward or downward, when the handle <NUM> is accommodated in the accommodation portion <NUM> of the pack housing <NUM>, the strap <NUM> may be embedded in the accommodation space <NUM> in a state of being automatically bent at least once. Accordingly, it is possible to reduce the inconvenience caused when the strap <NUM> is not easily bent and thus not easily embedded in the accommodation space <NUM>.

Moreover, the elastic member <NUM> may include a spring 350a that is contracted by a predetermined distance by the strap <NUM> when the handle <NUM> is drawn out of the accommodation portion <NUM>. In addition, the elastic member <NUM> may have a pressing plate 350b to prevent the center portion P1 (<FIG>) between the extensions of the strap <NUM> extending respectively from both ends of the handle bar <NUM> from moving upward, in a contracted state.

For example, as shown in <FIG>, the accommodation portion <NUM> may include two elastic members <NUM> respectively provided to both left and right sides of the accommodation space <NUM>. When the handle bar <NUM> is drawn out of the stopper <NUM>, the spring 350a of each of the two elastic members <NUM> may be pressed and compressed upward by the strap <NUM>. The two elastic members <NUM> compressed by pressure may prevent the center portion of the strap <NUM> from moving upward by the pressing plate 350b.

Therefore, according to this configuration of the present disclosure, since the elastic member <NUM> is configured to be contracted by a predetermined distance to block the movement of the center portion between the extensions of the strap <NUM> respectively extending from both ends of the handle bar <NUM> when the handle <NUM> is drawn out of the accommodation portion <NUM>, in the present disclosure, the strap <NUM> may be in close contact with the elastic member <NUM> together with the stopper <NUM>, so the strap <NUM> may stably restrict the upward movement of the accommodation portion <NUM>.

In addition, since the strap <NUM> is in close contact with the elastic member <NUM> to increase the contact area in close contact with the accommodation portion <NUM>, the weight force of the battery pack 300B caused by drawing out the handle <NUM> is not concentrated on any part of the accommodation portion <NUM>, thereby reducing the damage of the accommodation portion <NUM> that may occur during the use of the handle <NUM>.

Meanwhile, the battery pack <NUM> according to an embodiment of the present disclosure may include at least one battery module <NUM>. In addition, the battery pack <NUM> may further include various devices (not shown) for controlling charging and discharging of the battery module <NUM>, for example a battery management system (BMS), a current sensor, a fuse, and the like.

Meanwhile, an electronic device (not shown) according to an embodiment of the present disclosure includes at least one battery pack <NUM> described above. The electronic device may further include a device housing (not shown) having an accommodation space for accommodating the battery module <NUM>, and a display unit through which a user may check the state of charge (SOC) of the battery module <NUM>.

In addition, the battery pack <NUM> according to an embodiment of the present disclosure may be included in a vehicle such as an electric vehicle or a hybrid electric vehicle. That is, at least one battery pack <NUM> according to an embodiment of the present disclosure described above may be loaded in a vehicle body of the vehicle according to an embodiment of the present disclosure.

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:
a battery module (<NUM>) having a plurality of secondary batteries (<NUM>); and
a pack housing (<NUM>) including
an outer wall (<NUM>) configured to form an inner space for accommodating the battery module (<NUM>),
a handle (<NUM>) having a handle bar (<NUM>) configured to elongate in one direction and
a strap (<NUM>) configured in the form of a bendable strap (<NUM>) to respectively extend from both ends of the handle bar (<NUM>), and
an accommodation portion (<NUM>) configured so that the handle bar (<NUM>) is loaded therein, the accommodation portion (<NUM>) being configured such that the strap (<NUM>) is embedded therein in a state of being bent at least once when the handle bar (<NUM>) is loaded therein, the accommodation portion (<NUM>) being configured such that a center portion (P1) between extensions of the strap (<NUM>) respectively extending from both ends of the handle bar (<NUM>) is caught therein when the handle bar (<NUM>) is drawn out,
wherein the strap (<NUM>) has a loop form connected integrally, and a part of the strap (<NUM>) is positioned inside the handle bar (<NUM>),
wherein the accommodation portion (<NUM>) includes:
a stopper (<NUM>) configured to block the center portion (P1) between the extensions of the strap (<NUM>) respectively extending from both ends of the handle bar (<NUM>) not to move upward; and
an accommodation space (<NUM>) in which the strap (<NUM>) is embedded in a state of being bent at least once, and
wherein
the handle bar (<NUM>) is configured to be loaded on the stopper (<NUM>),
a receiving space (<NUM>) containing a first magnetic body (330a) is provided to a lower portion of the stopper (<NUM>), and
the handle bar (<NUM>) includes a second magnetic body (330b) configured to apply an attractive force to the first magnetic body (330a) by a magnetic force.