KR20230095021A - Battery pack and energy storage system comprising the battery pack - Google Patents

Abstract

According to an embodiment of the present invention, a battery pack comprises: a battery module including one or more battery cells; a pack case that accommodates the battery module; and a venting gas guide unit formed between the pack case and the battery module and configured to guide a venting gas from at least one battery cell to a specific direction of the battery pack.

Description

Battery pack and energy storage device including the same {BATTERY PACK AND ENERGY STORAGE SYSTEM COMPRISING THE BATTERY PACK}

The present invention relates to a battery pack and an energy storage device including the same.

Currently commercially available secondary batteries include nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and lithium secondary batteries. It is in the limelight because of its very low self-discharge rate and high energy density.

These lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with such a positive electrode active material and a negative electrode active material are disposed with a separator therebetween, and an exterior material that seals and houses the electrode assembly together with an electrolyte, that is, a battery case.

In general, lithium secondary batteries can be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of an exterior material.

These secondary batteries are widely used not only in small devices such as portable electronic devices, but also in medium and large devices such as electric vehicles and energy storage systems (ESSs), and their use is rapidly increasing. In addition, as issues such as power shortage or eco-friendly energy have recently emerged, an energy storage system (ESS) for storing generated power has received a lot of attention. Typically, when such an energy storage device is used, it is easy to construct a power management system such as a smart grid system, so that power supply and demand can be easily controlled in a specific region or city. In addition, as the commercialization of electric vehicles is in full swing, such an energy storage device can be applied to an electric charging station capable of charging electric vehicles.

Moreover, in recent years, in order to store and supply electric power for use in buildings such as houses or buildings, residential energy storage devices have been widely used. In addition, a core component of such a residential energy storage device may be referred to as a battery pack.

A plurality of battery cells (secondary batteries) are included in various battery packs, including those used in such residential ESSs, to increase capacity and/or output. In particular, in order to increase the energy density of a battery pack, a plurality of battery cells are often arranged in a dense state in a very narrow space.

In the case of a conventional battery pack provided for home use or industrial use, it is generally fixedly mounted on a wall through a mounting bracket. Here, the conventional battery pack may be mounted at a predetermined distance from the wall to which it is fixed. In the case of a conventional battery pack, when a venting gas is generated in a battery cell, the venting gas is generally discharged to the side where the wall is provided. can reach or even rise above.

Since this excessive wall temperature rise is highly likely to lead to problems such as serious danger or accidents, especially in the case of domestic battery packs, it is important to guide the venting gas generated from the battery pack in an appropriate direction to prevent this temperature rise. need.

Therefore, there is a demand for a method for providing a battery pack capable of inducing venting gas inside the battery pack in a specific direction and an energy storage device including the battery pack.

Accordingly, an object of the present invention is to provide a battery pack capable of inducing venting gas inside the battery pack in a specific direction and an energy storage device including the same.

Another object of the present invention is to provide a battery pack and an energy storage device including the battery pack capable of preventing an excessive increase in the temperature of a wall close to the battery pack mounting vicinity.

However, the technical problem to be solved by the present invention is not limited to the above problem, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below.

In order to solve the above object, the present invention, as a battery pack, a battery module including one or more battery cells; a pack case accommodating the battery module; and a venting gas guide unit formed between the pack case and the battery module and configured to guide vented gas from at least one battery cell to a specific direction of the battery pack.

Also, preferably, the battery pack is mounted to face a wall at the rear of the pack case, and the venting gas guide unit may guide the venting gas toward the front side of the pack case.

Also, preferably, the venting gas guide unit may include: a first guide passage for guiding the venting gas discharged from the battery cells of the battery module to one side of the pack case; and a second guide passage communicating with the first guide passage and guiding the venting gas toward the front side of the pack case.

Also, preferably, the first guide passage may be provided between the battery module and the pack case within the pack case.

Also, preferably, the second guide passage may be provided on the bottom of one side of the pack case.

Also, preferably, the pack case may include a module compartment provided between the battery module and one side surface of the pack case.

Also, preferably, the second guide passage may be provided between one side of the pack case and the module compartment.

Also, preferably, the venting gas guide unit may include a first guide rib provided in the first guide passage and guiding the venting gas toward the second guide passage.

Also, preferably, the first guide rib may be inclined at a predetermined angle.

Also, preferably, the venting gas guide unit may include a second guide rib provided in the second guide passage and guiding the venting gas toward the front of the pack case.

Also, preferably, the second guide rib may be inclined at a predetermined angle.

Also, preferably, the module compartment may be provided with a passage through-hole through which the first guide passage and the second guide passage communicate.

Also, preferably, the venting gas guide unit is provided on an upper side of the passage communication hole and may include an induction guide for guiding the venting gas toward the front of the pack case.

Also, preferably, the induction guider may be formed inclined at a predetermined angle.

And, the present invention, as an energy storage device, provides an energy storage device characterized in that it includes a battery pack according to the above-described embodiments.

According to various embodiments as described above, a battery pack capable of inducing venting gas inside the battery pack in a specific direction and an energy storage device including the battery pack may be provided.

Further, according to various embodiments as described above, it is possible to provide a battery pack and an energy storage device including the battery pack capable of preventing an excessive increase in the temperature of a wall close to an area where the battery pack is mounted.

In particular, by guiding the venting gas generated from the battery cells of the battery module inside the battery pack in a specific direction, it is possible to effectively prevent a temperature rise near the wall where the battery pack is mounted.

In addition, several other additional effects can be achieved by various embodiments of the present invention. The various effects of the present invention will be described in detail in each embodiment, or descriptions of effects that can be easily understood by those skilled in the art will be omitted.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is the details described in such drawings should not be construed as limited to
1 is a diagram for explaining a battery pack according to an embodiment of the present invention.
FIG. 2 is a side view of the battery pack of FIG. 1 .
3 is a cross-sectional side view of a main part of the battery pack of FIG. 1;
FIG. 4 is a partial cutaway view for explaining a main part of the battery pack of FIG. 3 .
FIG. 5 is a schematic partial cutaway view for explaining the flow of venting gas through the venting gas guide unit of the battery pack of FIG. 1 .
FIG. 6 is a schematic cross-sectional view illustrating a flow of venting gas through a venting gas guide unit of the battery pack of FIG. 5 .
7 is a view for explaining a venting gas guide unit according to another embodiment of the present invention.
8 is a view for explaining a venting gas guide unit according to another embodiment of the present invention.
9 is a diagram for explaining a battery pack according to another embodiment of the present invention.
10 is a view for explaining a venting gas guide unit according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors appropriately use the concept of terms in order to best explain their invention. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.

Meanwhile, in the present specification, terms indicating directions such as up, down, left, right, front, and back may be used, but these terms are only for convenience of description, depending on the location of the target object or the location of the observer. It is obvious to those skilled in the art that it may vary.

Terms such as first, second, and the like used in the following description may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the corresponding component is not limited by the term.

1 is a view for explaining a battery pack according to an embodiment of the present invention, FIG. 2 is a side view of the battery pack of FIG. 1, FIG. 3 is a side cross-sectional view of a main part of the battery pack of FIG. 1, and FIG. It is a partial cutaway view for explaining a main part of the battery pack of FIG. 3 .

Referring to FIGS. 1 to 4 , the battery pack 10 may include a battery module 100 , a pack case 200 and a venting gas guide unit 300 .

The battery module 100 may include one or more battery cells 110 . Here, each battery cell 110 may mean a secondary battery. A secondary battery may include an electrode assembly, an electrolyte, and a battery case. Furthermore, the battery cell 110 included in the battery module 100 may be a pouch type secondary battery. However, other types of secondary batteries, such as cylindrical batteries or prismatic batteries, may also be employed in the battery module 100 of the present invention.

The pack case 200 may accommodate the battery module 100 . To this end, an accommodation space capable of accommodating the battery module 100 may be provided in the pack case 200 . The pack case 200 is fixed to a structure such as a wall (W) through a mounting bracket (B) and may be spaced apart from a structure such as the wall (W) by a predetermined distance. The mounting bracket (B) may be provided at the rear of the pack case 200 . For example, the mounting bracket (B) may be provided on at least one of the rear upper and lower surfaces of the pack case 200 . Hereinafter, in the present embodiment, the mounting bracket (B) will be described as being provided on both the upper and lower surfaces of the rear of the pack case 200.

The venting gas guide unit 300 is formed between the pack case 200 and the battery module 100 and directs the venting gas G from at least one battery cell 110 to the battery pack 10. It can be configured to induce in a specific direction of.

In this embodiment, it is possible to induce a specific direction of the venting gas (G, see FIG. 5 ), that is, directional venting, through the venting gas guide unit 300 , which is generated inside the battery pack 10 . It is possible to guide the venting gas (G, see FIG. 5) in an optimal direction that can easily discharge and prevent the temperature rise of a specific part.

Hereinafter, the venting gas guide unit 300 will be described in more detail.

The battery pack 10 may be mounted facing the wall W at the rear of the pack case 200 as the wall W is fixed through the mounting bracket B. Here, the venting gas guide unit 300 may guide the venting gas (G, see FIG. 5 ) toward the front side of the pack case 100 .

In the battery pack 10, a venting gas (G, see FIG. 5) may be generated from the battery cells 110 of the battery module 100 therein. When all or a significant portion of the venting gas (G, see FIG. 5) escapes to the rear of the battery pack 10, the rear of the pack case 100 facing the wall (W), the wall (W) temperature may rise. Here, when the venting gas (G, see FIG. 5 ) is generated, the temperature of the wall (W) may generally rise as the temperature of the battery pack 10 itself rises.

If the venting gas (G, see FIG. 5) continuously escapes toward the rear side of the pack case 200, the temperature of the wall (W) may rise more than necessary. For example, the temperature of the wall W may rise to 100 degrees or more. This can lead to a big problem, especially when the battery pack 10 is provided for home use, and it is necessary to prevent a temperature rise of the wall W above what is necessary. Here, the temperature of the wall (W) is preferably maintained at a temperature of approximately 97 degrees or less.

The venting gas guide unit 300 of this embodiment guides the venting gas (G, see FIG. 5) to the front of the pack case 100, so that the venting gas (G, see FIG. 5) An increase in the temperature of the wall (W) can be effectively prevented.

FIG. 5 is a schematic partial cut-away view for explaining the flow of venting gas through the venting gas guide unit of the battery pack of FIG. 1 , and FIG. 6 illustrates the flow of venting gas through the venting gas guide unit of the battery pack of FIG. 5 . It is a schematic cross-section for explanation.

Referring to FIGS. 5 and 6 , the venting gas guide unit 300 may include a first guide passage 310 and a second guide passage 330 .

The first guide passage 310 may guide the venting gas G discharged from the battery cell 110 of the battery module 100 to one side of the pack case 100 . The second guide passage 330 communicates with the first guide passage 310 and may guide the venting gas G toward the front side of the pack case 200 .

Here, the venting gas G may flow from the first guide passage 310 to the second guide passage 330 through an unsealed portion inside the pack case 200 .

Through the first guide passage 310 and the second guide passage 330, the venting gas (G) is not the back of the pack case 200 facing the wall (W), but the pack case ( 200), it is possible to effectively prevent the temperature rise of the wall (W).

The first guide passage 310 may be provided between the battery module 100 and the pack case 200 within the pack case 200 . Specifically, the first guide passage 310 may be provided in an upper space of the battery module 100 and a lower space of an upper surface of the pack case 200 .

The second guide passage 330 is provided on the bottom of one side of the pack case 100 and may communicate with the first guide passage 310 . Specifically, the second guide passage 330 is provided on the bottom of the upper surface of the pack case 100 and may be provided on the upper side of the first guide passage 310 .

Meanwhile, the pack case 200 may include a module compartment 250 provided between the battery module 100 and one side surface of the pack case 200 . The module compartment 250 may guide a disposition position of the battery module 100 within the pack case 200 .

In addition, the module partitioning part 250 may partition the first guide passage 310 and the second guide passage 330 . The module compartment 250 may be provided on one surface of the pack case 200 so that the first guide passage 310 and the second guide passage 330 can communicate with each other.

The first guide passage 310 may be provided at the bottom of the module compartment 250 , and the second guide passage 330 may be provided at the top of the module compartment 250 .

More specifically, the first guide passage 330 is provided between the battery module 100 and the module compartment 250, and the second guide passage 330 is a part of the pack case 200. One side, in the case of this embodiment, may be provided between the upper surface of the pack case 200 and the module compartment 250.

As such, in the battery pack 10 according to the present embodiment, the battery module ( Venting gas (G) from the battery cell 110 of 100 is guided to the front side of the pack case 200 to effectively prevent the temperature rise of the wall (W) disposed at the rear of the battery pack 10. there is.

Meanwhile, the battery pack 10 may further include a control module for managing the battery module 100 . The control module may be electrically connected to the battery module 100 . The control module performs a control operation for overall management of the battery module 100 by sensing charging and discharging of the battery module 100, voltage and temperature of the battery cells 110 of the battery module 100, and the like. can do. The control module may function as a battery management system (BMS).

In addition, the battery pack 10 may further include a cooling unit for cooling the battery module 100 . The cooling unit is provided on one side of the battery module 100 and may include a cooling passage for cooling the battery module 100 . A cooling fluid for cooling the battery module 100 may flow through the cooling passage. The cooling fluid may be a liquid such as cooling water or a gas such as air.

7 is a view for explaining a venting gas guide unit according to another embodiment of the present invention.

Since the venting gas guide unit 400 according to this embodiment is similar to the venting gas guide unit 300 of the previous embodiment, redundant descriptions of components substantially the same as or similar to those of the previous embodiment will be omitted. , The differences from the previous embodiment will be mainly examined.

Referring to FIG. 7 , the venting gas guide unit 400 may include a first guide passage 410 and a second guide passage 430 .

Since the first guide passage 410 and the second guide passage 430 are similar to the first guide passage 310 and the second guide passage 330 of the previous embodiment, duplicate descriptions will be omitted below. .

The venting gas guide unit 400 may include a first guide rib 450 .

The first guide rib 450 has a predetermined length and may be provided in the first guide passage 410 . The first guide rib 450 may guide the venting gas G toward the second guide passage 430 .

The first guide rib 450 may more quickly and efficiently guide the venting gas G in the first guide passage 410 toward the second guide passage 430 .

The first guide rib 450 may be inclined at a predetermined angle. Specifically, the first guide rib 450 may be inclined downward at a predetermined angle from the inner rear surface of the pack case 200 .

In addition, the first guide rib 450 may be inclined at a predetermined angle from the inner rear surface of the pack case 200 to the front of the pack case 200 .

The inclined structure of the first guide rib 450 may more quickly guide the venting gas G in the first guide passage 410 toward the second guide passage 430.

In this embodiment, through the venting gas guide unit 400 having the first guide rib 450, the venting gas G in the first guide passage 410 is more efficiently discharged into the first guide rib 450. 2 can flow to the guide passage 430 side.

8 is a view for explaining a venting gas guide unit according to another embodiment of the present invention.

Since the venting gas guide unit 500 according to the present embodiment is similar to the venting gas guide unit 400 of the previous embodiment, redundant descriptions of components substantially the same as or similar to those of the previous embodiment will be omitted. , The differences from the previous embodiment will be mainly examined.

Referring to FIG. 8 , the venting gas guide unit 500 may include a first guide passage 510 , a second guide passage 530 and a first guide rib 550 .

The first guide passage 510, the second guide passage 530, and the first guide rib 550 are the first guide passage 410, the second guide passage 430 and the first guide passage 430 of the previous embodiment. Since it is similar to the first guide rib 450, a redundant description thereof will be omitted.

The venting gas guide unit 500 may include a second guide rib 570 .

The second guide rib 570 has a predetermined length and may be provided in the second guide passage 530 . The second guide rib 570 may guide the venting gas G toward the front of the pack case 200 .

The second guide rib 570 may more quickly and efficiently guide the venting gas G in the second guide passage 530 toward the front side of the pack case 200 .

The second guide rib 570 may be inclined at a predetermined angle. Specifically, the second guide rib 570 may be inclined upward at a predetermined angle from the inner rear surface of the pack case 200 .

In addition, the second guide rib 570 may be inclined at a predetermined angle from the inner rear surface of the pack case 200 toward the upper surface of the pack case 200 .

The inclined structure of the second guide rib 570 allows the venting gas (G) guided from the first guide passage 510 to the second guide passage 530 to be more rapidly than the pack case ( 200) can be guided to the front side.

In this embodiment, through the venting gas guide unit 500 having the second guide rib 570, the venting gas G in the second guide passage 530 is more efficiently discharged from the pack. It can flow to the front side of the case 200 .

9 is a diagram for explaining a battery pack according to another embodiment of the present invention.

Since the battery pack 20 according to this embodiment is similar to the battery pack 10 of the previous embodiment, redundant description of components substantially the same as or similar to those of the previous embodiment will be omitted, and hereinafter, the previous embodiment will be described. Let's take a look at the differences between

Referring to FIG. 9 , the battery pack 20 may include a battery module 100, a pack case 200, and a venting gas guide unit 300.

Since the battery module 100 is similar to the previous embodiment, a redundant description thereof will be omitted.

The venting gas guide unit 300 may include a first guide passage 310 and a second guide passage 330 . Since the first guide passage 310 and the second guide passage 330 are similar to those of the previous embodiment, a redundant description thereof will be omitted.

The pack case 200 may include a module compartment 270 .

A passage communication hole 275 may be provided in the module compartment 270 . The passage communication hole 275 may communicate the first guide passage 310 and the second guide passage 330 .

In this embodiment, as the module compartment 270 has the passage communication hole 275, the venting gas (G) flowing from the first guide passage 310 toward the second guide passage 330 ) can be made more smooth.

10 is a view for explaining a venting gas guide unit according to another embodiment of the present invention.

Since the venting gas guide unit 700 according to the present embodiment is similar to the venting gas guide unit 300 of the previous embodiment, redundant description of components substantially the same as or similar to those of the previous embodiment will be omitted. , The differences from the previous embodiment will be mainly examined.

Referring to FIG. 10 , the venting gas guide unit 600 may include a first guide passage 610 and a second guide passage 630 .

Since the first guide passage 610 and the second guide passage 630 are similar to the first guide passage 310 and the second guide passage 330 of the battery pack 20 of the previous embodiment, hereinafter , omitting redundant explanations.

The venting gas guide unit 600 may include a passage guider 650 .

The flow path guider 650 is provided on the upper side of the flow path communication hole 275 of the pack case 200, and can guide the venting gas G toward the front of the pack case 200.

The passage guider 650 moves the venting gas G, which has moved from the first guide passage 310 to the second guide passage 330, to the front side of the pack case 200 more quickly and efficiently can guide you

The passage guider 650 has a predetermined length and may be inclined at a predetermined angle. Specifically, the flow guider 650 may be inclined downward at a predetermined angle from the inner upper surface of the pack case 200 .

In addition, the flow guider 650 may be inclined at a predetermined angle from the inner upper surface of the pack case 200 toward the rear of the pack case 200 .

The inclined structure of the passage guider 650 allows the venting gas G guided from the first guide passage 610 to the second guide passage 630 through the passage passage hole 275 to be more It can be quickly guided to the front side of the pack case 200 quickly.

In this embodiment, through the venting gas guide unit 600 having the flow guider 650, the venting gas G in the second guide flow path 630 is more efficiently directed to the pack case ( 200) can flow to the front side.

An energy storage device according to an embodiment of the present invention includes one or more battery packs 10 and 20 according to the above-described embodiment of the present invention. In addition, the energy storage device according to an embodiment of the present invention may further include general components included in the energy storage device in addition to the battery packs 10 and 20 . In particular, the energy storage device according to an embodiment of the present invention may be a residential (building) energy storage device used to store energy in a house or building.

In addition, the energy storage device may include a plurality of battery packs 10 and 20 electrically connected to each other in order to have a large energy capacity. In addition, the energy storage device according to an embodiment of the present invention may further include various other components of the energy storage device known at the time of filing the present invention. Moreover, the energy storage device may be used in various places or devices such as a smart grid system or an electric charging station.

In addition, a vehicle according to an embodiment of the present invention may include one or more battery packs 10 and 20 according to the present invention. In addition, a vehicle according to an embodiment of the present invention may further include various other components included in the vehicle in addition to the battery packs 10 and 20 . For example, a vehicle according to an embodiment of the present invention further includes a vehicle body, a motor, and a control device such as an electronic control unit (ECU), in addition to the battery packs 10 and 20 according to an embodiment of the present invention. can do.

According to various embodiments as described above, it is possible to provide the battery packs 10 and 20 capable of inducing the venting gas G inside the battery packs 10 and 20 in a specific direction and an energy storage device including the battery packs 10 and 20. there is.

In addition, according to various embodiments as described above, the battery packs 10 and 20 capable of preventing an excessive increase in the temperature of the wall W near the mounting vicinity of the battery packs 10 and 20 and energy storage including the battery packs 10 and 20 device can be provided.

In particular, the venting gas G generated in the battery cell 110 of the battery module 100 inside the battery pack 10 or 20 is induced in a specific direction, near the wall W on which the battery packs 10 or 20 are mounted. temperature rise can be effectively prevented.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and is common in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible by those with knowledge of, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

10, 20: battery pack
W: wall
B: Mounting bracket
100: battery module
110: battery cell
200: pack case
250, 270: module compartment
275: Euro communication hole
300: venting gas guide unit
310: first guide passage, 330: second guide passage
400: venting gas guide unit
410: first guide passage, 430: second guide passage, 450: first guide rib
500: venting gas guide unit
510: first guide passage, 530: second guide passage
550: first guide rib, 570: second guide rib
600: venting gas guide unit
610: first guide passage, 630: second guide passage, 650: passage guider

Claims (15)

In the battery pack,
a battery module including one or more battery cells;
a pack case accommodating the battery module; and
A venting gas guide unit formed between the pack case and the battery module and configured to guide venting gas from at least one battery cell to a specific direction of the battery pack.
A battery pack comprising a. According to claim 1,
The battery pack,
Mounted facing the wall at the rear of the pack case,
The venting gas guide unit,
The battery pack, characterized in that for guiding the venting gas to the front side of the pack case. According to claim 2,
The venting gas guide unit,
a first guide passage for guiding the venting gas discharged from the battery cells of the battery module to one side of the pack case; and
A second guide passage that communicates with the first guide passage and guides the venting gas toward the front side of the pack case.
A battery pack comprising a. According to claim 3,
The first guide passage,
A battery pack, characterized in that provided between the battery module and the pack case in the pack case. According to claim 3,
The second guide passage,
A battery pack, characterized in that provided on the bottom of one side of the pack case. According to claim 5,
In the pack case,
A battery pack, characterized in that a module compartment provided between the battery module and one side of the pack case is provided. According to claim 6,
The second guide passage,
A battery pack, characterized in that provided between one side of the pack case and the module compartment. According to claim 3,
The venting gas guide unit,
and a first guide rib provided in the first guide passage and guiding the venting gas toward the second guide passage. According to claim 8,
The first guide rib,
A battery pack characterized in that it is formed inclined at a predetermined angle. According to claim 3,
The venting gas guide unit,
and a second guide rib provided in the second guide passage and guiding the venting gas forward of the pack case. According to claim 10,
The second guide rib,
A battery pack characterized in that it is formed inclined at a predetermined angle. According to claim 6,
In the module compartment,
The battery pack, characterized in that the first guide passage and the second guide passage is provided with a passage through hole communicating. According to claim 12,
The venting gas guide unit,
and an induction guide provided above the passage communication hole and guiding the venting gas toward the front of the pack case. According to claim 13,
The induction guider,
A battery pack characterized in that it is formed inclined at a predetermined angle. An energy storage device comprising the battery pack according to any one of claims 1 to 14.

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