Battery pack and vehicle including the same

Abstract

The present disclosure relates to a battery pack and a vehicle including the same, which are directed to providing a battery pack capable of improving energy efficiency compared to a battery pack of the same volume and weight. To this end, the present disclosure provides a battery pack comprising: a case; a plurality of battery cells each including a first surface and a second surface opposite to each other, and an exhaust port and a terminal formed on the first surface, and disposed within the case; a guide member disposed between the housing and the first surface and configured to guide a flow of emissions discharged from the exhaust port; and a buffer member disposed between the housing and the first surface and configured to absorb an impact applied to the terminal. According to one or more embodiments of the present disclosure, a volume ratio of battery cells may be increased and energy efficiency may be improved by integrating an exhaust path into a lower space of a battery pack, which is used for bollard performance evaluation by impact analysis.

Description

Technical Field

[0001] The present disclosure relates to a battery pack and a vehicle including the battery pack. Background Art

[0002] Unlike primary batteries that cannot be recharged, secondary batteries can be recharged and discharged. Low-capacity secondary batteries can be used in portable small electronic devices such as smartphones, feature phones, laptops, digital cameras, and camcorders, and high-capacity secondary batteries are widely used as power sources and storage batteries for drive motors in hybrid vehicles or electric vehicles. A secondary battery includes an electrode assembly including a positive electrode and a negative electrode, a case accommodating the electrode assembly, electrode terminals connected to the electrode assembly, and the like.

[0003] A secondary battery can be used as a battery pack formed of a plurality of unit battery cells connected in series and / or in parallel to provide a high energy density. The battery pack can be formed by interconnecting the electrode terminals of a plurality of unit cells to meet a desired electric power, for example, to implement a high-power secondary battery for an electric vehicle.

[0004] The above information disclosed in the technology forming the background art of the present disclosure is only intended to enhance the understanding of the background art of the present disclosure and may therefore include information that does not constitute related art. Summary of the Utility Model

[0005] Aspects of embodiments of the present disclosure relate to providing a battery pack that can improve energy efficiency compared to a battery pack of the same volume and weight, and a vehicle including the battery pack.

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

[0007] According to one or more embodiments, a battery pack includes: a case; a plurality of battery cells, each battery cell including a first surface and a second surface opposite to each other, an exhaust port and a terminal formed on the first surface, and disposed in the case; a guiding member disposed between the case and the first surface and configured to guide the flow of emissions discharged from the exhaust port; and a buffering member disposed between the case and the first surface and configured to absorb an impact applied to the terminal.

[0008] The case may include a case body, a first cover coupled to the case body and disposed to face the first surface, and a second cover coupled to the case body and disposed to face the second surface.

[0009] The case may further include a cooling channel disposed inside the second cover and through which a refrigerant flows.

[0010] The first surface can be set to face downward, and the first cover can be disposed below the housing body.

[0011] The guiding member may include: a bus bar holder disposed between the first cover and the first surface and including a bus bar connected to the terminal; a ventilation bracket disposed between the first cover and the bus bar holder; a plurality of transfer holes formed through the bus bar holder and the ventilation bracket; a first chamber disposed inside the ventilation bracket and connected to the transfer holes; and a second chamber disposed outside the ventilation bracket and configured to accommodate a buffer member.

[0012] A plurality of battery cells may be arranged in a first direction, and the first chamber and the second chamber may extend in the first direction.

[0013] The first chamber and the second chamber may be alternately disposed in a second direction intersecting the first direction.

[0014] The ventilation bracket may include: a bracket body configured to surround the first chamber, a first extension portion extending from the bracket body and contacting the first cover, and a second extension portion extending from the first extension portion and contacting the housing body.

[0015] The guiding member may further include a sealing member configured to seal the first chamber and the transfer holes.

[0016] The sealing member may include a first sealing member disposed between the first cover and the first extension portion, a second sealing member disposed between the bus bar holder and the bracket body, and a third sealing member disposed between the bus bar holder and the first surface.

[0017] The sealing member may further include a fourth sealing member disposed inside the second chamber.

[0018] The guiding member may further include a fixing member connected to the ventilation bracket and configured to prevent movement of the ventilation bracket.

[0019] The fixing member may include a first fixing body passing through the second extension portion and inserted into the housing body, a second fixing body disposed inside the housing body and coupled to the first fixing body, and a pressing flange extending from the first fixing body and configured to press the second extension portion toward the housing body.

[0020] The guiding member may further include a plurality of reinforcing members configured to strengthen the rigidity of the ventilation bracket.

[0021] A plurality of battery cells may be arranged in a first direction, and the transfer holes and the reinforcing members may be alternately disposed in the first direction.

[0022] The reinforcing member may protrude from the bracket body, and the reinforcing member may be arranged such that its longitudinal direction is parallel to a second direction intersecting the first direction.

[0023] The terminals may be provided as a pair, and the buffer member may include a first pad provided on one side of the ventilation bracket and facing one of the pair of terminals, and a second pad provided on the other side of the ventilation bracket and facing the other of the pair of terminals.

[0024] The first pad and the second pad may be provided to be elastically deformable.

[0025] According to one or more embodiments, a vehicle includes a body and a battery pack coupled to the body, wherein the battery pack includes: a housing; a plurality of battery cells, each battery cell including a first surface and a second surface opposite to each other, an exhaust port and a terminal formed on the first surface, and being disposed in the housing; a guiding member disposed between the housing and the first surface and configured to guide the flow of emissions discharged from the exhaust port; and a buffer member disposed between the housing and the first surface and configured to absorb an impact applied to the terminal.

[0026] The battery pack may be disposed below the body, and the first surface may be disposed facing downward.

[0027] According to one or more embodiments of the present disclosure, by integrating the exhaust path into the lower space of the battery pack (which is used for evaluating the performance of the bumper through impact analysis), the volume ratio of the battery cells can be increased and the energy efficiency can be improved.

[0028] However, the effects obtainable through the present disclosure are not limited to the above effects, and other technical effects not mentioned will be clearly understood by those skilled in the art from the following description of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings attached to this specification illustrate some embodiments of the present disclosure, and further describe aspects and features of the present disclosure together with the detailed description of the present disclosure. However, the present disclosure should not be construed as being limited to the drawings:

[0030] Figure 1 is a perspective view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure;

[0031] Figure 2 is a bottom perspective view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure;

[0032] Figure 3 is an exploded perspective view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure;

[0033] Figure 4is a cross-sectional view schematically showing a configuration of a battery pack according to an embodiment of the present disclosure;

[0034] Figure 5 is a perspective view schematically showing a configuration of a battery cell according to an embodiment of the present disclosure;

[0035] Figure 6 is a cross-sectional view schematically showing a configuration of a battery cell according to an embodiment of the present disclosure;

[0036] Figure 7 is an exploded perspective view schematically showing a configuration of a guiding member according to an embodiment of the present disclosure;

[0037] Figure 8 is a cross-sectional view schematically showing a configuration of a guiding member according to an embodiment of the present disclosure;

[0038] Figure 9 and Figure 10 is a cross-sectional perspective view schematically showing a configuration of a guiding member according to an embodiment of the present disclosure;

[0039] Figure 11 and Figure 12 is an enlarged view schematically showing a configuration of a buffer member according to an embodiment of the present disclosure;

[0040] Figure 13 is a view schematically showing a configuration of a fourth sealing member according to an embodiment of the present disclosure; and

[0041] Figure 14 is a view schematically showing a configuration of a vehicle according to an embodiment of the present disclosure. Detailed Description

[0042] Herein, some embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The terms or words used in this specification and the claims should not be construed as limited to the ordinary or dictionary meanings, and should be construed as having meanings and concepts consistent with the technical concept of the present disclosure based on the principle that the inventor can be his / her own lexicographer to appropriately define the terms.

[0043] The embodiments described in this specification and the configurations shown in the drawings are provided as some exemplary embodiments of the present disclosure, and do not represent all technical concepts, aspects, and features of the present disclosure. Therefore, it should be understood that various equivalents and modifications that can replace or modify the embodiments described herein may exist at the time of filing this application.

[0044] It should be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on, directly connected or coupled to the other element or layer, or there may be one or more intervening elements or layers. When an element or layer is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. For example, when a first element is described as being "coupled" or "connected" to a second element, the first element can be directly coupled or connected to the second element, or the first element can be indirectly coupled or connected to the second element via one or more intervening elements.

[0045] In the drawings, for clarity of illustration, the dimensions of various elements, layers, etc. may be exaggerated. The same reference numerals indicate the same or similar elements. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Additionally, when describing embodiments of the present disclosure, the use of "may" refers to "one or more embodiments of the present disclosure." Expressions such as "at least one of..." and "any one of..." modify the entire list of elements when preceding the list of elements, rather than individual elements in the list. When phrases such as "at least one of A, B, and C," "at least one of A, B, or C," "at least one selected from the group consisting of A, B, and C," or "at least one selected from A, B, and C" are used to specify a list of elements A, B, and C, the phrase can refer to any and all suitable combinations or subsets of A, B, and C, such as A, B, C, A and B, A and C, B and C, or A and B and C. As used herein, the terms "use," "using," and "used" may be considered to be synonymous with the terms "utilize," "utilizing," and "utilized," respectively. As used herein, the terms "substantially," "about," and similar terms are used as approximate terms and not as terms of degree, and are intended to account for the inherent variations in measured or calculated values that would be recognized by a person of ordinary skill in the art.

[0046] It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Thus, a first element, component, region, layer, or portion discussed below may be referred to as a second element, component, region, layer, or portion without departing from the teachings of the exemplary embodiments.

[0047] For ease of description, spatial relative terms such as "below", "beneath", "lower", "above", "upper", etc. may be used herein to describe the relationship of one element or feature to another or other elements or features as shown in the figures. It should be understood that, in addition to the orientation shown in the figures, spatial relative terms are intended to encompass different orientations of the device during use or operation. For example, if the device in the figures is flipped, an element described as "below" or "beneath" other elements or features will be oriented "above" or "over" the other elements or features. Thus, the term "below" can encompass both above and below orientations. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatial relative descriptors used herein should be interpreted accordingly.

[0048] The terminology used herein is for the purpose of describing embodiments of the present disclosure and is not intended to limit the present disclosure. As used herein, the singular forms "a" and "an" are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that when used in this specification, the terms "includes", "including", "comprises" and / or "comprising" specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0049] In addition, any numerical range disclosed and / or recited herein is intended to include all sub-ranges of the same numerical precision subsumed within the recited range. For example, a range of "1.0 to 10.0" is intended to include all sub-ranges between the recited minimum value of 1.0 and the recited maximum value of 10.0 (and including the endpoints), i.e., having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limitation recited herein is intended to include all lower numerical limitations subsumed therein, and any minimum numerical limitation recited in this specification is intended to include all higher numerical limitations subsumed therein. Accordingly, the applicant reserves the right to modify this specification (including the claims) to expressly recite any sub-ranges subsumed within the ranges expressly recited herein.

[0050] Referring to two compared elements, features, etc. as "the same" may mean that they are "substantially the same". Thus, the phrase "substantially the same" may include cases having a deviation considered low in the art, e.g., a deviation of 5% or less. Additionally, when a certain parameter is said to be uniform in a given region, it may mean that it is uniform in terms of the average value.

[0051] Throughout the specification, unless otherwise specified, each element may be singular or plural.

[0052] When any element is referred to as being disposed (or positioned or located) "above (or below)" or "on (or under)" a component, it may mean that the any element is placed in contact with the upper (or lower) surface of the component, and may also mean that another component may be interposed between the component and any element disposed (or positioned or located) "on (or under)" the component.

[0053] In addition, it should be understood that when an element is referred to as being "coupled", "linked", or "connected" to another element, these elements may be "coupled", "linked", or "connected" directly to each other, or there may be one or more intermediate elements therebetween through which the element may be "coupled", "linked", or "connected" to the other element. In addition, when a component is referred to as being "electrically coupled" to another component, the component may be directly electrically connected to the other component, or there may be one or more intermediate components therebetween such that the component and the other component are indirectly electrically connected to each other.

[0054] Throughout the specification, unless otherwise specified, when stating "A and / or B", it means A, B, or A and B. That is, "and / or" includes any or all combinations of the recited items. When stating "C to D", unless otherwise specified, it means C or greater and D or less.

[0055] The terms used in this specification are used to describe embodiments of the present disclosure and are not intended to limit the present disclosure.

[0056] Figure 1 is a perspective view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure,

[0057] Figure 2 is a bottom perspective view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure,

[0058] Figure 3 is an exploded perspective view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure, Figure 4 is a cross-sectional view schematically showing the configuration of a battery pack according to an embodiment of the present disclosure.

[0059] The first direction described below may be shown as being based on Figures 1 to 3 the direction parallel to the Y-axis, and the second direction may be shown as the direction parallel to the X-axis.

[0060] Referring to Figures 1 to 4, the battery pack 1 according to the present embodiment includes a housing 100, battery cells 200, a guiding member 300, and a buffering member 400.

[0061] The housing 100 forms the basic appearance of the battery pack 1 and can serve as a component that fully supports the battery cells 200, the guiding member 300, and the buffering member 400, which will be described below.

[0062] The housing 100 may include a housing body 110, a first cover 120, and a second cover 130.

[0063] The housing body 110 may include a body 111, a first partition wall 112, and a second partition wall 113.

[0064] The body 111 may be formed in the shape of a box with an empty interior and open upper and lower sides. The cross-sectional shape of the body 111 is not limited to Figure 3 the shape shown and may be designed to be changed into various shapes according to the number, arrangement form, etc. of the battery cells 200 to be described below.

[0065] The first partition wall 112 and the second partition wall 113 are provided inside the body 111 and may partition the interior space of the body 111. That is, the first partition wall 112 and the second partition wall 113 can serve as components that enhance the structural rigidity of the body 111 and divide the interior space of the body 111 in which the battery cells 200 are accommodated into multiple accommodation spaces. The first partition wall 112 and the second partition wall 113 may be arranged to cross each other. For example, the first partition wall 112 may be arranged such that its longitudinal direction is parallel to the first direction, and the second partition wall 113 may be arranged such that its longitudinal direction is parallel to the second direction.

[0066] One or more first partition walls 112 and one or more second partition walls 113 may be formed. In an example, as Figure 3 shown, the first partition wall 112 may be formed as a single partition wall, and the second partition wall 113 may be formed as multiple partition walls. The first partition wall 112 may be provided in the central portion of the body 111, and the multiple second partition walls 113 may be arranged at a predetermined interval in a direction parallel to the first direction. As an example, Figure 3 shows the case where the first partition wall 112 is formed as a single partition wall, but alternatively, multiple first partition walls 112 may also be formed. In this case, the multiple first partition walls 112 may be arranged at a predetermined interval in a direction parallel to the second direction. The number of the first partition wall 112 and the second partition wall 113 may be variously changed in design according to the size of the body 111, the number of the battery cells 200, etc., which will be described below.

[0067] The first cover 120 and the second cover 130 are coupled to the housing body 110 and can enclose the internal space of the housing body 110.

[0068] In the example, the first cover 120 may be formed in a shape of a substantially flat plate and is disposed to face the lower side surface of the housing body 110. The first cover 120 may be fixed to the housing body 110 by various types of coupling methods such as bolt connection, welding, and fitting.

[0069] The second cover 130 may be formed in a shape of a substantially flat plate and is disposed to face the upper side surface of the housing body 110. The second cover 130 may be fixed to the housing body 110 by various types of coupling methods such as bolt connection, welding, and fitting.

[0070] The housing 100 may further include a cooling channel 140.

[0071] The cooling channel 140 may be disposed inside the second cover 130 and may provide a flow path for a refrigerant supplied from the outside. The cooling channel 140 may serve as a component for cooling the battery cell 200 through a heat exchange action between the refrigerant flowing therethrough and the battery cell 200, which will be described below. The cooling channel 140 may extend to form a zigzag shape in the second cover 130 such that the refrigerant circulates in the entire area of the second cover 130. The refrigerant flowing through the cooling channel 140 may be designed to be changed into various types of heat exchange media such as water, insulating oil, etc.

[0072] The battery cell 200 may be used as a unit structure for storing and supplying electric power in the battery pack 1.

[0073] Figure 5 is a perspective view schematically showing a configuration of a battery cell according to an embodiment of the present disclosure, and Figure 6 is a cross-sectional view schematically showing a configuration of a battery cell according to an embodiment of the present disclosure.

[0074] Referring to Figure 5 and Figure 6 , the battery cell 200 may include at least one electrode assembly 10, a housing 20, and a cover assembly 30 coupled to an opening of the housing 20. In the electrode assembly 10, a separator 13 as an insulator is interposed between a positive electrode 11 and a negative electrode 12 and wound together, and the electrode assembly 10 is embedded in the housing 20.

[0075] Hereinafter, a case where the battery cell 200 is a lithium ion secondary battery and has a prismatic shape will be described as an example. However, the present disclosure is not limited thereto, and the battery cell 200 may be a lithium polymer battery or a cylindrical battery.

[0076] The positive electrode 11 and the negative electrode 12 may include coated portions and uncoated portions 11a and 12a. The coated portions are regions where active materials are applied on current collectors formed of thin metal foils, and the uncoated portions 11a and 12a are regions where no active materials are applied.

[0077] The positive electrode 11 and the negative electrode 12 may be wound after inserting a separator 13 as an insulator therebetween. However, the present disclosure is not limited thereto, and the electrode assembly 10 may have a structure in which the positive electrode and the negative electrode (each formed of a plurality of sheets) are alternately stacked while inserting the separator therebetween.

[0078] The housing 20 forms the overall appearance of the battery cell 200 and may be formed of a conductive metal such as aluminum, an aluminum alloy, or nickel-plated steel. In addition, the housing 20 may provide a space in which the electrode assembly 10 is accommodated.

[0079] The cover assembly 30 may include a cover plate 31 configured to cover the opening of the housing 20, and the housing 20 and the cover plate 31 may be made of a conductive material. Here, terminals 21 electrically connected to the positive electrode 11 or the negative electrode 12 may be installed to protrude to the outside through the cover plate 31.

[0080] In addition, the terminals 21 protruding to the outside of the cover plate 31 may be formed as a pair. The pair of terminals 21 may be respectively connected to the positive electrode 11 and the negative electrode 12 and may be respectively used as the positive electrode terminal and the negative electrode terminal of the battery cell 200. More specifically, the terminals 21 may be electrically connected to current collectors including a first current collector 40 and a second current collector 50 (hereinafter, referred to as the positive electrode current collector and the negative electrode current collector) that are respectively joined to the uncoated portion 11a of the positive electrode and the uncoated portion 12a of the negative electrode by welding. For example, the pair of terminals 21 may be respectively joined to the positive electrode current collector 40 and the negative electrode current collector 50 by welding. However, the present disclosure is not limited thereto, and the terminals 21 may be integrally joined to the positive electrode current collector 40 and the negative electrode current collector 50, respectively. The outer circumferential surface of the upper post of the terminals 21 may be threaded and may be fixed to the cover plate 31 with nuts.

[0081] However, the present disclosure is not limited thereto, and the terminals 21 may have a rivet structure and may be riveted to the cover plate 31 or welded to the cover plate 31.

[0082] In addition, the cover plate 31 may be made of a thin plate and joined to the opening of the housing 20. In the cover plate 31, an electrolyte injection hole 32 in which a sealing cap 33 may be installed may be formed, and an exhaust port 34 may be installed.

[0083] The exhaust port 34 can be opened and closed in conjunction with changes in the internal pressure of the housing 20. That is, the exhaust port 34 can seal the housing 20 by remaining closed during normal operation of the electrode assembly 10. The exhaust port 34 can be opened as the internal pressure of the housing 20 increases to a set size or greater due to overcharging, fire occurrence, etc., and can discharge emissions such as flames and gases from the inside of the housing 20 to the outside of the housing 20.

[0084] In addition, an insulating member can be installed between the electrode assembly 10 and the cover plate 31. Here, the insulating member can include a first lower insulating member 60 and a second lower insulating member 70, and each of the first lower insulating member 60 and the second lower insulating member 70 can be installed between the electrode assembly 10 and the cover plate 31.

[0085] Furthermore, according to the present embodiment, one end of a separation member that can be installed to face one side surface of the electrode assembly 10 can be installed between the insulating member and the terminal 21.

[0086] Here, the separation member can include a first separation member 80 and a second separation member 90.

[0087] Therefore, one end of the first separation member 80 and one end of the second separation member 90 can be respectively installed between the first lower insulating member 60 and the second lower insulating member 70 and a pair of terminals 21, and each of the first separation member 80 and the second separation member 90 can be installed to face one side surface of the electrode assembly 10.

[0088] As a result, the terminals 21 welded to the positive electrode current collector 40 and the negative electrode current collector 50 can be respectively coupled to the first lower insulating member 60 and the second lower insulating member 70 and one end of the first separation member 80 and one end of the second separation member 90.

[0089] The battery cell 200 can include a first surface 201 and a second surface 202 that face each other. Here, the first surface 201 can refer to the top surface of the cover plate 31, and the second surface 202 can refer to the bottom surface of the housing 20. Therefore, the terminals 21 and the exhaust port 34 can be formed on the first surface 201 of the battery cell 200.

[0090] The battery cell 200 can be disposed inside the housing 100. The first surface 201 of the battery cell 200 can be disposed to face the first cover 120 in the housing 100. That is, the first surface 201 can be disposed facing downward, and the terminals 21 and the exhaust port 34 formed on the first surface 201 can also be disposed facing downward.

[0091] The second surface 202 of the battery cell 200 may be configured to face the second cover 130. That is to say, the second surface 202 may be configured to face upward. The second surface 202 may be spaced apart from the second cover 130 by a predetermined distance.

[0092] A heat dissipation member 141 for improving the heat exchange efficiency between the battery cell 200 and the refrigerant flowing through the cooling channel 140 may be installed between the second surface 202 and the second cover 130. The heat dissipation member 141 may be formed of a material having high thermal conductivity, such as thermal glue. The heat dissipation member 141 may be applied to the second cover 130 or the second surface 202 in a liquid or gel state, and then cured and fixed between the second surface 202 and the second cover 130. The shape of the heat dissipation member 141 is not limited to Figure 3 and Figure 4 the shape shown, and may be variously changed in design according to the shape of the battery cell 200, the distance between the second surface 202 and the second cover 130, etc.

[0093] A plurality of battery cells 200 may be provided. The plurality of battery cells 200 may be disposed inside the housing 100. The plurality of battery cells 200 may be provided in a set number and form for each different accommodation space of the housing 100, which is separated by the main body 111, the first partition wall 112, and the second partition wall 113. The plurality of battery cells 200 may be arranged in the housing 100 along a first direction. The battery cells 200 arranged in the first direction may be arranged in multiple rows in a second direction. For example, 24 battery cells 200 may be arranged in each accommodation space of the housing 100 along the first direction, and the 24 battery cells 200 arranged in the first direction may be arranged in two rows in the second direction. However, the number and arrangement form of the plurality of battery cells 200 are not limited thereto, and may be changed to various numbers and arrangement forms in design.

[0094] A guiding member 300 may be disposed between the housing 100 and the first surface 201 of the battery cell 200. The guiding member 300 may serve as a component for guiding the flow of emissions in the housing 100, and the emissions are discharged from the exhaust port 34 in the case of explosion or thermal runaway of the battery cell 200. Here, the emissions may be various materials such as gas, flame, smoke, and other diffused materials discharged from the exhaust port 34 in the case of explosion or thermal runaway of the battery cell 200.

[0095] Figure 7 is an exploded perspective view schematically showing the configuration of a guiding member according to an embodiment of the present disclosure, Figure 8 is a cross-sectional view schematically showing the configuration of a guiding member according to an embodiment of the present disclosure, Figure 9 and Figure 10is a cross-sectional perspective view schematically showing a configuration of a guide member according to an embodiment of the present disclosure.

[0096] Referring Figures 1 to 10 , the guide member 300 may include a bus bar holder 310, a ventilation bracket 320, a transfer hole 330, a first chamber 340, and a second chamber 350.

[0097] The bus bar holder 310 may be disposed between the first cover 120 and the first surface 201 of the battery cell 200. The bus bar holder 310 is formed in a shape having a substantially plate, and may be disposed on the first surface 201 of the battery cell 200. The bus bar holder 310 may be formed of an electrically insulating material.

[0098] A plurality of bus bar holders 310 may be provided. The plurality of bus bar holders 310 may be separately disposed in the accommodation spaces of the housing 100 separated by the main body 111, the first partition wall 112, and the second partition wall 113. The area of the bus bar holder 310 may be smaller than the area of each accommodation space, and may be larger than the sum of the areas of the first surfaces 201 of each of the plurality of battery cells 200 disposed in each accommodation space.

[0099] The bus bar holder 310 may include a bus bar 311.

[0100] The bus bar 311 may be supported by the bus bar holder 310 and electrically connected to the terminals of the battery cell 200. The bus bar 311 may be exemplified by various types of connection members that may be electrically connected to the battery cell 200 to form a charging and discharging path of the battery cell 200. The bus bar 311 may be formed of a conductive material such as nickel, aluminum, copper, etc. One surface of the bus bar 311 may be fixed to the terminal 21 of the battery cell 200 by welding or the like. The other surface of the bus bar 311 may be disposed to face the first cover 120.

[0101] A plurality of bus bars 311 may be provided. The plurality of bus bars 311 may be disposed at positions facing the terminals 21 of the plurality of battery cells 200. The plurality of bus bars 311 may be arranged in multiple rows in the first direction and the second direction. The shape and arrangement form of the plurality of bus bars 311 are not limited to Figure 3 and Figure 7 the form shown in, and may be variously changed in design according to the series or parallel connection structure between the plurality of battery cells 200.

[0102] A flexible circuit board (not shown) and various sensors (not shown) capable of detecting state information (such as temperature, current, and voltage) of each battery cell 200 may be additionally installed in the bus bar holder 310.

[0103] The ventilation bracket 320 can be disposed between the first cover 120 and the bus bar holder 310. The ventilation bracket 320 can support the battery cell 200 and the bus bar holder 310 relative to the first cover 120. The ventilation bracket 320 can separate the first cover 120 and the bus bar holder 310 from each other, thereby providing a space between the first cover 120 and the bus bar holder 310, in which a first chamber 340 and a second chamber 350 described below can be formed. The thickness of the ventilation bracket 320 can be from 0.5 mm to 3 mm.

[0104] The ventilation bracket 320 can include a bracket main body 321, a first extension part 322, and a second extension part 323.

[0105] The bracket main body 321 can form the appearance of the central part of the ventilation bracket 320. The bracket main body 321 can be formed in a cup shape with an empty interior and an open lower side. The bracket main body 321 can be disposed between the bus bar holder 310 and the first cover 120. The open side of the bracket main body 321 (i.e., the lower surface of the bracket main body 321) can be disposed to face the first cover 120. The upper surface of the bracket main body 321 can be disposed to face the bus bar holder 310. The upper surface of the bracket main body 321 can be spaced apart from the bus bar holder 310, and alternatively, can be in direct contact with the bus bar holder 310. The upper surface of the bracket main body 321 can be disposed to face the exhaust port 34 of the battery cell 200, and the bus bar holder 310 is inserted between the upper surface of the bracket main body 321 and the exhaust port 34 of the battery cell 200.

[0106] The bracket main body 321 can extend in the longitudinal direction parallel to the first direction. Therefore, the upper surface of the bracket main body 321 can be disposed to face the exhaust ports 34 of the plurality of battery cells 200 arranged in the first direction, and the bus bar holder 310 is located between the upper surface of the bracket main body 321 and the exhaust ports 34 of the plurality of battery cells 200.

[0107] A plurality of bracket main bodies 321 can be provided. Each of the bracket main bodies 321 can be provided individually for each different row of the battery cells 200 arranged in the first direction.

[0108] The first extension part 322 can form the appearance of the edge of the bracket main body 321. The first extension part 322 can extend from the lower end part of the bracket main body 321 in the width direction of the bracket main body 321 (i.e., in the direction parallel to the second direction). The first extension part 322 can be in contact with the upper surface of the first cover 120. Therefore, the first extension part 322 can support the bracket main body 321 between the bus bar holder 310 and the first cover 120.

[0109] The second extension portion 323 may extend from the first extension portion 322 and may contact the housing body 110. The second extension portion 323 may be formed to protrude upward from the first extension portion 322 toward the bus bar holder 310.

[0110] A plurality of second extension portions 323 may be provided. The plurality of second extension portions 323 may be individually provided at each position facing the second partition wall 113 in the entire area of the first extension portion 322. The upper side surface of the second extension portion 323 may contact the lower side surface of the second partition wall 113.

[0111] The second extension portion 323 may be formed to have an Figure 10 empty interior as shown, or alternatively, may be formed to have a filled interior.

[0112] The transfer hole 330 may serve as a component that provides a path through which the emissions discharged from the exhaust port 34 are transferred to the first chamber 340, which will be described below. The transfer hole 330 may be formed in the shape of a hole that vertically penetrates the bus bar holder 310 and the ventilation bracket 320 (more specifically, the bracket body 321). Both the upper end portion and the lower end portion of the transfer hole 330 may be connected to the exhaust port 34 of the battery cell 200 and the first chamber 340, respectively, which will be described below. The transfer hole 330 may be provided to face the exhaust port 34 of the battery cell 200. Except for Figure 9 the elliptical shape shown, the cross-sectional shape of the transfer hole 330 may be changed to various shapes in design, such as a circular shape, a polygonal shape, etc.

[0113] A plurality of transfer holes 330 may be provided. The plurality of transfer holes 330 may be arranged at a predetermined interval in the longitudinal direction of the bracket body 321 (i.e., in the first direction). The plurality of transfer holes 330 may be provided to face the exhaust ports 34 formed in different battery cells 200, respectively. The gap between adjacent transfer holes 330 may be the same as the gap between the exhaust ports 34 formed in adjacent battery cells 200.

[0114] The first chamber 340 can be provided inside the ventilation bracket 320. The first chamber 340 can refer to the space surrounded by the inner surface of the ventilation bracket 320 in the entire space formed between the bus bar retainer 310 and the first cover 120. The upper end portion of the first chamber 340 can vertically pass through the bus bar retainer 310 and the ventilation bracket 320 to be connected to the lower end portion of the transfer hole 330. The longitudinal direction of the first chamber 340 can be parallel to the longitudinal direction of the ventilation bracket 320. That is to say, the first chamber 340 can be formed in the shape of a flow path having its longitudinal direction extending in the first direction. The end portions of the first chamber 340 in the longitudinal direction can be connected to the external space of the housing 100. Therefore, in the case of explosion or thermal runaway of the battery cell 200, the emissions discharged from the exhaust port 34 can be sequentially discharged to the external space of the housing 100 through the transfer hole 330 and the first chamber 340. The height of the first chamber 340 can be 12 mm or more and 20 mm or less.

[0115] The second chamber 350 can be provided outside the ventilation bracket 320. The second chamber 350 can refer to the space excluding the first chamber 340 from the entire space formed between the bus bar retainer 310 and the first cover 120. The longitudinal direction of the second chamber 350 can be parallel to the longitudinal direction of the ventilation bracket 320. That is to say, the second chamber 350 can be formed in the shape of a flow path having its longitudinal direction extending in the first direction. The bus bar 311 connected to the terminal 21 of the battery cell 200 and a buffer member 400 to be described below can be accommodated in the second chamber 350.

[0116] The first chamber 340 and the second chamber 350 can be alternately provided in a second direction intersecting the first direction. That is to say, a pair of second chambers 350 can be respectively provided on both sides of one first chamber 340. Therefore, in the battery pack according to the present embodiment, the volume ratio of the battery cell 200 can be increased by integrating the exhaust path into the space for evaluating the performance of the bollard via impact analysis.

[0117] The guiding member 300 can further include a sealing member 360.

[0118] The sealing member 360 can be used as a component for sealing the first chamber 340 and the transfer hole 330 so as to prevent the emissions discharged from the exhaust port 34 from leaking from the first chamber 340 and the transfer hole 330.

[0119] The sealing member 360 can include a first sealing member 361, a second sealing member 362, and a third sealing member 363.

[0120] The first sealing member 361 can be disposed between the first cover 120 and the first extension portion 322 and can be sealed therebetween. The first sealing member 361 can be formed to have a substantially strip-like shape, and its upper and lower surfaces can be in contact with the lower side surface of the first extension portion 322 and the upper side surface of the first cover 120, respectively. The first sealing member 361 can be glue or an adhesive, which is applied in a liquid or gel state between the first cover 120 and the first extension portion 322 and then cured. Alternatively, the first sealing member 361 can be formed of an elastically deformable material such as rubber, silicone, etc. Thus, the upper and lower surfaces of the first sealing member 361 can be more firmly attached to the first cover 120 and the first extension portion 322 by its own elastic restoring force. The specific shape of the first sealing member 361 is not limited to Figure 7 the shape shown, and can be changed in design to various forms capable of sealing between the first cover 120 and the first extension portion 322.

[0121] The second sealing member 362 can be disposed between the bus bar holder 310 and the bracket body 321 and can be sealed therebetween. The second sealing member 362 can be formed to have a substantially strip-like shape, and its upper and lower surfaces can be in contact with the lower side surface of the bus bar holder 310 and the upper side surface of the bracket body 321, respectively. For any one bracket body 321, the second sealing members 362 can be provided in pairs. A pair of second sealing members 362 can be arranged to face each other with a transfer hole 330 therebetween.

[0122] The second sealing member 362 can be glue or an adhesive, which is applied in a liquid or gel state between the bus bar holder 310 and the bracket body 321 and then cured. Alternatively, the second sealing member 362 can be formed of an elastically deformable material such as rubber, silicone, etc. Thus, the upper and lower surfaces of the second sealing member 362 can be more firmly attached to the bus bar holder 310 and the bracket body 321 by its own elastic restoring force. The specific shape of the second sealing member 362 is not limited to Figure 7 the shape shown, and can be changed in design to various forms capable of sealing between the bus bar holder 310 and the bracket body 321.

[0123] The third sealing member 363 may be disposed between the bus bar holder 310 and the first surface 201 of the battery cell 200, and may be sealed between the bus bar holder 310 and the first surface 201. The third sealing member 363 may be formed in a substantially strip shape, and its upper and lower surfaces may be in contact with the first surface 201 and the upper side surface of the bus bar holder 310, respectively. For any one of the bracket bodies 321, the third sealing members 363 may be provided in pairs. A pair of third sealing members 363 may be arranged to face each other with a transfer hole 330 therebetween.

[0124] The third sealing member 363 may be glue or an adhesive, which is applied in a liquid or gel state between the bus bar holder 310 and the first surface 201 of the battery cell 200 and then cured. Alternatively, the third sealing member 363 may be formed of an elastically deformable material such as rubber, silicone resin, etc. Thus, the upper and lower surfaces of the third sealing member 363 may be more firmly attached to the bus bar holder 310 and the first surface 201 by its own elastic restoring force. The specific shape of the third sealing member 363 is not limited to Figure 7 the shape shown, and may be changed in design to various forms capable of sealing between the bus bar holder 310 and the first surface 201.

[0125] The guiding member 300 may further include a fixing member 370.

[0126] The fixing member 370 may be connected to the ventilation bracket 320 and may prevent the ventilation bracket 320 from moving between the bus bar holder 310 and the first cover 120. Thus, the fixing member 370 may prevent the sealing performance of the sealing member 360 that seals the transfer hole 330 and the first chamber 340 from deteriorating due to the movement of the ventilation bracket 320.

[0127] The fixing member 370 may include a first fixing body 371, a second fixing body 372, and a pressing flange 373.

[0128] The first fixing body 371 may be formed in the shape of a rod that vertically penetrates the second extension portion 323 in the vertical direction. The upper end portion of the first fixing body 371 may penetrate the second extension portion 323 and may be inserted into the housing body 110, more specifically, into the second partition wall 113. Threads may be formed on the outer peripheral surface of the first fixing body 371.

[0129] The second fixing body 372 can be coupled to the first fixing body 371 and can prevent the first fixing body 371 from separating from the second extension portion 323. The second fixing body 372 can be disposed inside the housing body 110, and more specifically, inside the second partition wall 113. The second fixing body 372 can be formed in the shape of a hollow ring and have threads formed on its inner circumferential surface. The inner surface of the second fixing body 372 can be threadedly coupled to the outer surface of the first fixing body 371. When the second fixing body 372 is fully coupled to the first fixing body 371, the lower surface of the second fixing body 372 can contact the inner surface of the second partition wall 113. Accordingly, when the second fixing body 372 is fully coupled to the first fixing body 371, the first fixing body 371 can be prevented from separating from the second partition wall 113 and the second extension portion 323 due to the contact force with the second partition wall 113.

[0130] The pressing flange 373 can extend from the first fixing body 371 and press the second extension portion 323 toward the housing body 110 by being interlocked with the coupling of the first fixing body 371 and the second fixing body 372. The pressing flange 373 can have the shape of a circular plate extending in the radial direction of the first fixing body 371 from the lower end portion of the first fixing body 371. When the upper end portion of the first fixing body 371 is inserted into the second partition wall 113, the upper surface of the pressing flange 373 can contact the outer surface of the second extension portion 323. When the second fixing body 372 is fully coupled to the first fixing body 371, the pressing flange 373 can press the second extension portion 323 toward the housing body 110 by the acting force generated by the contact between the second fixing body 372 and the second partition wall 113.

[0131] The guiding member 300 may further include a reinforcing member 380.

[0132] The reinforcing member 380 can be provided in the ventilation bracket 320 and can reinforce the rigidity of the ventilation bracket 320. That is, the reinforcing member 380 can serve as a component that prevents the ventilation bracket 320 from deforming due to the pressure of the emissions discharged from the exhaust port 34 by increasing the inherent rigidity of the ventilation bracket 320.

[0133] In an example, the reinforcing member 380 may have the shape of a rib protruding from the upper surface of the bracket body 321 toward the first chamber 340. The reinforcing member 380 can be formed such that its longitudinal direction is parallel to the width direction of the bracket body 321, that is, the second direction. A plurality of reinforcing members 380 can be provided. The plurality of reinforcing members 380 can be arranged at a predetermined interval in the longitudinal direction (i.e., the first direction) of the bracket body 321. In this case, the plurality of transfer holes 330 and the plurality of reinforcing members 380 can be alternately provided in the longitudinal direction (i.e., the first direction) of the bracket body 321.

[0134] The buffer member 400 may be disposed between the housing 100 and the first surface 201 of the battery cell 200. The buffer member 400 may be disposed to face the terminal 21 of the battery cell 200 and may absorb an impact applied to the terminal 21. That is, the buffer member 400 may serve as a component that prevents damage to the battery cell 200, the terminal 21, and the bus bar 311 due to an impact applied from the outside of the housing 100.

[0135] Figure 11 and Figure 12 is an enlarged view schematically showing the configuration of the buffer member according to an embodiment of the present disclosure.

[0136] Referring to Figures 1 to 12 , the buffer member 400 may include a first pad 410 and a second pad 420.

[0137] The first pad 410 and the second pad 420 may be disposed between the bus bar holder 310 and the first cover 120, and more specifically, disposed within the second chamber 350. The first pad 410 and the second pad 420 may be respectively disposed on both sides of the ventilation bracket 320, and the ventilation bracket 320 is interposed between the first pad 410 and the second pad 420.

[0138] The first pad 410 may be disposed to face one of the pair of terminals 21 of the battery cell 200. In an example, the first pad 410 may be disposed to face the terminal 21 of the pair of terminals 21 of the battery cell 200 that is adjacent to the first partition wall 112 or the main body 111. The first pad 410 may be disposed to face the terminal 21, and the bus bar 311 is interposed between the first pad 410 and the terminal 21. The lower surface of the first pad 410 may contact the upper surface of the first cover 120. The upper surface of the first pad 410 may be spaced apart from the bus bar 311, and alternatively, may be in direct contact with the bus bar 311. The first pad 410 may be formed of an elastically deformable material. Thus, the first pad 410 may be elastically deformed by an impact applied from the outside and absorb the impact transmitted to the bus bar 311 and the terminal 21.

[0139] The first pad 410 may be formed of an insulating material. Thus, the first pad 410 may electrically insulate the bus bar 311 and the terminal 21 from the first cover 120, thereby preventing safety accidents caused by short circuits or the like. In an example, the first pad 410 may include at least one of silicone resin, rubber, and other synthetic resin materials that are elastically deformable and have insulating properties.

[0140] The first pad 410 may include a first protrusion 411. The first protrusion 411 may protrude upward from the upper surface of the first pad 410 and may contact the lower surface of the bus bar holder 310. In this case, the first pad 410 may be arranged to completely surround the bus bar 311 protruding downward from the bus bar holder 310. Therefore, when an impact is applied from the outside, the first pad 410 can be prevented from changing its position relative to the bus bar 311.

[0141] The second pad 420 may be arranged to face the remaining one of the pair of terminals 21 of the battery cell 200. In an example, the second pad 420 may be arranged to face the terminal 21 of the pair of terminals 21 of the battery cell 200 that is adjacent to the battery cell 200 in the second direction. The second pad 420 may be arranged to face the terminal 21, and the bus bar 311 may be interposed between the second pad 420 and the terminal 21. The lower surface of the second pad 420 may contact the upper surface of the first cover 120. The upper surface of the second pad 420 may be spaced apart from the bus bar 311, and alternatively, may be in direct contact with the bus bar 311. The second pad 420 may be formed of an elastically deformable material such as rubber or silicone. Therefore, the second pad 420 can be elastically deformed by an impact applied from the outside and absorb the impact transmitted to the bus bar 311 and the terminal 21.

[0142] The second pad 420 may be formed of an insulating material. Therefore, the second pad 420 can electrically insulate the bus bar 311 and the terminal 21 from the first cover 120, thereby preventing safety accidents caused by short circuits or the like. In an example, the second pad 420 may include at least one of silicone, rubber, and other synthetic resin materials that are elastically deformable and have insulating properties.

[0143] The length of the second pad 420 parallel to the second direction may be greater than the length of the first pad 410 parallel to the second direction. Therefore, the second pad 420 can be formed in each of the pair of battery cells 200 adjacent to each other in the second direction and arranged to face the pair of terminals 21 arranged adjacent to each other.

[0144] The second pad 420 may include a second protrusion 421. The second protrusion 421 may protrude upward from the upper surface of the second pad 420 and may contact the lower surface of the bus bar holder 310. In this case, the second pad 420 may be arranged to completely surround the bus bar 311 protruding downward from the bus bar holder 310. Therefore, when an impact is applied from the outside, the second pad 420 can be prevented from changing its position relative to the bus bar 311.

[0145] Figure 13 is a view schematically showing the configuration of a fourth sealing member according to an embodiment of the present disclosure.

[0146] Refer toFigure 13 The sealing member 360 may further include a fourth sealing member 364.

[0147] The fourth sealing member 364 may be disposed within the second chamber 350. The fourth sealing member 364 may serve as a component that prevents emissions discharged from the first chamber 340 or the transfer hole 330 into the second chamber 350 from spreading within the second chamber 350. Accordingly, even when the first sealing member 361, the second sealing member 362, and the third sealing member 363 are damaged or displaced from their normal positions due to external shock, a pressure increase caused by thermal runaway of the battery cell 200, etc., the fourth sealing member 364 can initially ensure the sealing performance with respect to the first chamber 340 or the transfer hole 330.

[0148] The fourth sealing member 364 may include a material having excellent sealing performance and having insulating properties and heat resistance. In an example, the fourth sealing member 364 may include at least one material selected from silicone resin, rubber, epoxy resin, polyurethane, and aerogel.

[0149] The fourth sealing member 364 may be injected into the second chamber 350 in a liquid or gel state and then cured. Alternatively, the fourth sealing member 364 may be manufactured in a solid state and then inserted into the second chamber 350. The fourth sealing member 364 may be fixed to the surfaces of the first cover 120, the ventilation bracket 320, the first gasket 410, and the second gasket 420 that face the inner space of the second chamber 350. The fourth sealing member 364 may be fixed to the said surfaces of the first cover 120, the ventilation bracket 320, the first gasket 410, and the second gasket 420 by its own adhesive force, or may be pressed onto the said surfaces of the first cover 120, the ventilation bracket 320, the first gasket 410, and the second gasket 420. Accordingly, the fourth sealing member 364 can seal the inner space of the second chamber 350 without a gap.

[0150] Hereinafter, a vehicle according to an embodiment of the present disclosure will be described.

[0151] Figure 14 is a view schematically showing the configuration of a vehicle according to an embodiment of the present disclosure.

[0152] Referring to Figures 1 to 14 , the vehicle may include a battery pack 1 and a vehicle body 2.

[0153] The battery pack 1 is configured in the same manner as the battery pack 1 described with reference to Figures 1 to 13 and thus a repetitive description thereof will be omitted.

[0154] The vehicle body 2 forms the framework of the vehicle and supports the battery pack 1. The vehicle body 2 can be exemplified as a frame body, a monocoque body, a skateboard platform, etc., which are commonly applied to vehicles. A plurality of wheels that rotate by receiving driving force from a motor, an engine, etc. can be connected to the vehicle body 2.

[0155] The battery pack 1 can be disposed below the vehicle body 2. For example, the battery pack 1 can be incorporated into the floor panel of the vehicle body 2, etc.

[0156] In this case, the first cover 120 of the housing 100 can be set to face downward, and the first surface 201 of the battery cell 200 can also be set to face downward. Therefore, in the vehicle according to the present embodiment, by integrating the exhaust path into the lower space of the battery pack 1 (which is used for evaluating the performance of the bumper through impact analysis), the volume ratio of the battery cell 200 can be increased and the energy efficiency can be improved.

[0157] The above vehicle can be variously designed within the scope of mobile devices (including electric vehicles, hybrid vehicles, electric motorcycles, and other electric vehicles) equipped with the battery pack 1.

Claims

1. A battery pack, characterized in that, Comprising: A housing; Multiple battery cells, each battery cell including a first surface and a second surface opposite to each other, as well as an exhaust port and a terminal formed on the first surface, and being disposed inside the housing; A guiding member, disposed between the housing and the first surface and configured to guide the flow of emissions discharged from the exhaust port; And A buffer member, disposed between the housing and the first surface and configured to absorb the impact applied to the terminal.

2. The battery pack according to claim 1, characterized in that, The housing includes: A housing body; A first cover, coupled to the housing body and disposed to face the first surface; and A second cover, coupled to the housing body and disposed to face the second surface.

3. The battery pack according to claim 2, wherein The housing further includes a cooling channel, the cooling channel being disposed inside the second cover, and a refrigerant flowing through the cooling channel.

4. The battery pack according to claim 2, characterized in that, The first surface is disposed to face downward, and The first cover is disposed below the housing body.

5. The battery pack according to claim 2, characterized in that, The guiding member includes: A bus bar holder, disposed between the first cover and the first surface and including a bus bar connected to the terminal; A ventilation bracket, disposed between the first cover and the bus bar holder; Multiple transfer holes, formed to penetrate through the bus bar holder and the ventilation bracket; A first chamber, disposed inside the ventilation bracket and connected to the transfer holes; and A second chamber, disposed outside the ventilation bracket and configured to accommodate the buffer member.

6. The battery pack according to claim 5, characterized in that, The multiple battery cells are arranged in a first direction, and The first chamber and the second chamber extend in the first direction.

7. The battery pack according to claim 6, wherein The first chamber and the second chamber are alternately disposed in a second direction intersecting the first direction.

8. The battery pack according to claim 5, wherein, The ventilation bracket includes: A bracket body, disposed to surround the first chamber; A first extension portion, extending from the bracket body and contacting the first cover; and A second extension portion, extending from the first extension portion and contacting the housing body.

9. The battery pack according to claim 8, wherein, The guiding member further includes a sealing member configured to seal the first chamber and the transfer holes.

10. The battery pack according to claim 9, characterized in that, The sealing member includes: A first sealing member, disposed between the first cover and the first extension portion; A second sealing member, disposed between the bus bar holder and the bracket body; and A third sealing member, disposed between the bus bar holder and the first surface.

11. The battery pack according to claim 10, characterized in that, The sealing member further includes a fourth sealing member disposed inside the second chamber.

12. The battery pack according to claim 8, characterized in that, The guiding member further includes a fixing member connected to the ventilation bracket and configured to prevent the movement of the ventilation bracket.

13. The battery pack according to claim 12, wherein, The fixing member includes: A first fixing body, passing through the second extension portion and inserted into the housing body; A second fixing body, disposed inside the housing body and coupled to the first fixing body; and A pressing flange, extending from the first fixing body and configured to press the second extension portion toward the housing body.

14. The battery pack according to claim 8, wherein, The guiding member further includes multiple strengthening members configured to strengthen the rigidity of the ventilation bracket.

15. The battery pack according to claim 14, characterized in that, The multiple battery cells are arranged in a first direction, and The transfer holes and the strengthening members are alternately disposed in the first direction.

16. The battery pack according to claim 15, characterized in that, The reinforcing member protrudes from the bracket body, and the reinforcing member is arranged such that its longitudinal direction is parallel to a second direction intersecting the first direction.

17. The battery pack according to claim 5, characterized in that, The terminals are provided in a pair, and the buffer member includes: a first pad disposed on one side of the ventilation bracket and facing one of the pair of terminals; and a second pad disposed on the other side of the ventilation bracket and facing the other of the pair of terminals.

18. The battery pack according to claim 17, wherein The first pad and the second pad are provided to be elastically deformable.

19. A vehicle, characterized in that, Comprising: a vehicle body; and a battery pack coupled to the vehicle body, wherein the battery pack includes: a housing; a plurality of battery cells, each battery cell including a first surface and a second surface opposite to each other, and an exhaust port and a terminal formed on the first surface, and disposed inside the housing; a guiding member disposed between the housing and the first surface and configured to guide the flow of emissions discharged from the exhaust port; and a buffer member disposed between the housing and the first surface and configured to absorb an impact applied to the terminal.

20. The vehicle according to claim 19, characterized in that, The battery pack is disposed below the vehicle body, and the first surface is arranged to face downward.

Images