Secondary battery module

Abstract

Disclosed is a secondary battery module. The secondary battery module includes: a plurality of battery cells arranged to each other in a first direction, each of the plurality of battery cells including a terminal portion on an upper surface and an exhaust portion for exhausting gas; a frame portion accommodating the plurality of battery cells; a bus bar holder including an opening exposing terminal portions of the plurality of battery cells and a conduit for guiding discharge of gas; and a bus bar located in the opening of the bus bar holder and electrically connecting adjacent battery cells among the plurality of battery cells.

Description

Technical Field

[0001] Embodiments of the present disclosure are directed to a secondary battery module capable of stably discharging gas (eg, gas discharged from a vent portion of a battery cell) to a side surface of a bus bar holder. Background Art

[0002] Generally, a battery cell is used as an energy source for mobile devices, electric vehicles and / or hybrid vehicles, etc., and may be variously and / or appropriately changed and used according to the type or kind of external device to which the battery cell is applied.

[0003] In situations where long-term operation or high-power operation is desired or required, such as in electric vehicles or hybrid vehicles that consume a large amount of electricity, a large-capacity secondary battery module can be formed by electrically connecting multiple battery cells to increase output and capacity. The secondary battery module can increase the output voltage or output current depending on the number of battery cells included.

[0004] Furthermore, when a battery cell fails, gas may be exhausted from a vent portion of the battery cell.

[0005] However, gas generated from the battery cells is generally not stably discharged from the bus bar holder, resulting in damage to heat propagation of the plurality of battery cells caused by the gas.

[0006] The above information disclosed in this Background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute the prior art. Summary of the invention

[0007] An aspect of one or more embodiments of the present disclosure is directed to a secondary battery module capable of easily exhausting gas (eg, gas exhausted from a vent portion of a battery cell) by forming a duct through which the gas can be exhausted at an upper portion of a bus bar holder.

[0008] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosed presented embodiments.

[0009] According to one or more embodiments, a secondary battery module includes: a plurality of battery cells arranged one above the other in a first direction, each of the plurality of battery cells including a terminal portion on an upper surface and an exhaust portion for exhausting gas; a frame portion accommodating the plurality of battery cells; a bus bar holder including an opening exposing the terminal portions of the plurality of battery cells and a conduit for guiding the exhaust of gas; and a bus bar located in the opening of the bus bar holder and electrically connecting adjacent battery cells among (in) the plurality of battery cells.

[0010] In one or more embodiments, the conduit may be used to guide gas exhausted from at least one of the vents of the plurality of battery cells toward two opposing edges of the bus bar holder.

[0011] In one or more embodiments, the conduit may be connected to the at least one exhaust portion and may extend toward one of two opposing edges of the bus bar holder.

[0012] In one or more embodiments, the conduit may include: a plurality of first conduits for guiding the discharge of gas in a first edge direction of the bus bar holder; and a plurality of second conduits for guiding the discharge of gas in a second edge direction of the bus bar holder opposite to the first edge direction.

[0013] In one or more embodiments, the plurality of first conduits may include: a plurality of first connectors, respectively connected to exhaust portions of some of the plurality of battery cells (e.g., to allow introduction of gas); and a plurality of first conduits, for guiding gas from the plurality of first connectors in a first edge direction of the bus bar holder.

[0014] In one or more embodiments, at least one of the plurality of first connectors may include a first inlet pipe connected to a corresponding one of the vents of the plurality of battery cells and may have an opening allowing gas to flow in.

[0015] In one or more embodiments, a plurality of first ducts may be located at an upper portion of the bus bar holder, and at least one first duct of the plurality of first ducts may be located at a position between the plurality of battery cells.

[0016] In one or more embodiments, at least one first connection member among the plurality of first connection members may have a rectangular shape and may cover a corresponding exhaust portion.

[0017] In one or more embodiments, at least one first pipe among the plurality of first pipes may include: a first connecting pipe connected to a corresponding first connecting member among the plurality of first connecting members; and a first exhaust pipe connected to the first connecting pipe to exhaust the gas in a first edge direction of the bus bar retainer.

[0018] In one or more embodiments, for at least one first pipe of the plurality of first pipes, the first connecting pipe may be connected between the corresponding first connecting piece and the first exhaust pipe, and may be inclined at a first angle relative to the first exhaust pipe (e.g., between the first connecting piece and the first exhaust pipe).

[0019] In one or more embodiments, the first angle can be in a range of about 45° to about 150° relative to the first exhaust conduit.

[0020] In one or more embodiments, for at least one of the plurality of first conduits, the first exhaust conduit may be located in the bus bar holder at a position between adjacent battery cells among the plurality of battery cells (eg, at an upper portion between adjacent battery cells among the plurality of battery cells).

[0021] In one or more embodiments, for at least one first conduit of the plurality of first conduits, the first exhaust conduit may have a trapezoidal flow path therein to allow exhaustion of gas.

[0022] In one or more embodiments, the plurality of second ducts may include: a plurality of second connectors, respectively connected to exhaust portions of remaining battery cells among the plurality of battery cells, the plurality of second connectors alternating with the plurality of first connectors in a length direction of the bus bar holder; and a plurality of second pipes for guiding gas from the plurality of second connectors in a second edge direction of the bus bar holder.

[0023] In one or more embodiments, at least one of the plurality of second connectors may include a second inlet pipe connected to a corresponding one of the vents of the plurality of battery cells and may have an opening allowing gas to flow in.

[0024] In one or more embodiments, a plurality of second ducts may be located at an upper portion of the bus bar holder, and at least one second duct of the plurality of second ducts may be located at a position between the plurality of battery cells.

[0025] In one or more embodiments, the second connection member may be formed in a rectangular shape covering the vent portion in the bus bar holder.

[0026] In one or more embodiments, at least one of the plurality of second pipes may include: a second connecting pipe connected to a corresponding second connecting member among the plurality of second connecting members; and a second exhaust pipe connected to the second connecting pipe to exhaust the gas in a second edge direction of the bus bar retainer opposite to the first edge direction.

[0027] In one or more embodiments, for at least one second pipe of the plurality of second pipes, a second connecting pipe connection may be between the corresponding second connector and the second exhaust pipe and (between the second connecting pipe and the second exhaust pipe) inclined at a first angle relative to the second exhaust pipe.

[0028] In one or more embodiments, the first angle may be in the range of 45° to 150° relative to the second conduit.

[0029] In one or more embodiments, the bus bar holder may be a plastic composite material.

[0030] In one or more embodiments, the terminal portions of the plurality of battery cells and the bus bars may be joined via welding.

[0031] According to one or more embodiments of the present disclosure, first ducts and second ducts are formed opposite to each other at an upper portion of a bus bar holder in a staggered (alternating) state, so that gas can be stably discharged in a side surface direction of the bus bar holder (e.g., toward one side of the bus bar holder).

[0032] According to one or more embodiments of the present disclosure, the conduit is located between the plurality of battery cells at the upper portion of the bus bar holder, preventing or reducing damage to the battery cells due to high temperature heat during a gas exhaust process, thereby improving durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The accompanying drawings illustrate example embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. In the drawings: Figure 1 is a perspective view schematically showing a secondary battery module according to one or more embodiments of the present disclosure; Figure 2 According to one or more embodiments of the present disclosure Figure 1 An exploded perspective view of a main part of a secondary battery module schematically showing a separated state of a bus bar holder; Figure 3 is a perspective view schematically showing a bus bar holder according to one or more embodiments of the present disclosure; Figure 4 The present invention schematically illustrates one or more embodiments of the present invention. Figure 3 A bottom perspective view of a bus bar holder; Figure 5 The present invention schematically illustrates one or more embodiments of the present invention. Figure 3 A cross-sectional view of a bus bar holder; Figure 6 The present invention schematically illustrates one or more embodiments of the present invention. Figure 3 A top plan view of a main portion of a discharge duct of a busbar holder having an inclined connection with a connecting duct; and Figure 7is a perspective view schematically showing a main portion of a bus bar holder in which a drain duct is formed according to one or more embodiments of the present disclosure. DETAILED DESCRIPTION

[0034] The present disclosure can be modified in many alternative forms, and therefore specific embodiments will be shown in the drawings and described in more detail. However, it should be understood that this is not intended to limit the present disclosure to the particular form disclosed, but is intended to cover all modifications, equivalents and substitutes falling within the spirit and scope of the present disclosure.

[0035] Hereinafter, example embodiments will be described in more detail with reference to the accompanying drawings. However, the present disclosure may be implemented in various different forms and should not be construed as being limited to the embodiments shown herein. On the contrary, these embodiments are provided as examples so that the present disclosure will be thorough and complete, and the aspects and features of the present disclosure will be fully conveyed to those skilled in the art. Therefore, processes, elements and techniques that are not necessary for a person of ordinary skill in the art to fully understand the aspects and features of the present disclosure may not be described. Unless otherwise stated, throughout the drawings and written descriptions, the same reference numerals represent the same elements, and therefore, their repeated descriptions may not be provided. In the drawings, for clarity, the relative sizes of elements, layers and regions may be exaggerated.

[0036] It will be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the spirit and scope of the present disclosure, the first element, first component, first region, first layer or first part described below may be referred to as the second element, second component, second region, second layer or second part.

[0037] For ease of explanation, spatially relative terms such as "on...", "below...", "above...", "upper...", etc. may be used herein to describe the relationship of one element or feature to another element or feature as shown in the figure. It will be understood that, in addition to the orientation depicted in the figure, the spatially relative terms are intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will then be oriented to be "above" the other elements or features. Therefore, the example terms "below..." and "below..." can cover both above and below orientations. The device can be otherwise oriented (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0038] It will be understood that when an element (such as a region, layer, film, zone, or portion) is referred to as being "on" or "connected to" another element, it can be directly on or directly connected to the other element, or one or more intervening elements may be present. Additionally, it will be understood that when an element is referred to as being "between" two elements, it can be the only element between the two elements, or one or more intervening elements may also be present.

[0039] As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprises", "includes", "having" and variations thereof are used in this specification, they indicate the presence of stated features, integers (integers), steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers (integers), steps, operations, elements, components and / or groups thereof.

[0040] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0041] As used herein, the term "use" and variations thereof may be considered synonymous with the term "utilize" and variations thereof, respectively.

[0042] Figure 1 is a perspective view schematically showing a secondary battery module according to one or more embodiments of the present disclosure, and Figure 2 According to one or more embodiments of the present disclosure Figure 1 An exploded perspective view of a main portion of a secondary battery module schematically showing a separated state of a bus bar holder.

[0043] like Figure 1 and Figure 2 As shown in , a secondary battery module 100 according to one or more embodiments of the present disclosure includes: a plurality of battery cells 10, arranged one to another in a first direction (y-axis direction) (along the first direction (y-axis direction)), (the plurality of battery cells 10) having a terminal portion 11, and (the plurality of battery cells 10) having a vent portion 13 through which gas is discharged; a frame portion 20, accommodating the battery cells 10; a bus bar holder 30, having an opening 31 through which the terminal portions 11 of the plurality of battery cells 10 are exposed, and including a conduit 40 for guiding gas discharge; and a bus bar 50, arranged in the opening of the bus bar holder 30, and electrically connecting adjacent battery cells 10 among the plurality of battery cells 10.

[0044] The frame portion 20 may include: a first side frame 21, supporting one side of the plurality of battery cells 10; a second side frame 23, supporting the other side of the plurality of battery cells 10; a first end frame 25, having two ends, one end of which is connected to one end of the first side frame 21 and the other end is connected to one end of the second side frame 23; and a second end frame 27, also having two end portions, one end of which is connected to the other end of the first side frame 21 and the other end is connected to the other end of the second side frame 23.

[0045] The first side frame 21 may be installed to support one side of the plurality of battery cells 10 .

[0046] The second side frame 23 may be installed to support the other side of the plurality of battery cells 10 .

[0047] The first end frame 25 may be installed to connect one end of each of the first side frame 21 and the second side frame 23. For example, one end of the first end frame 25 may be connected to one end of the first side frame 21 by a fastening member, and the other end of the first end frame 25 may be connected to one end of the second side frame 23 by a fastening member.

[0048] The second end frame 27 may be installed to connect the other end of the first side frame 21 and the other end of the second side frame 23. For example, one end of the second end frame 27 may be connected to the other end of the first side frame 21 (e.g., the end of the first side frame 21 not connected to the first end frame 25) by a fastening member, and the other end of the second end frame 27 may be connected to the other end of the second side frame 23 (e.g., the end of the second side frame 23 not connected to the first end frame 25) by a fastening member.

[0049] A plurality of battery cells 10 may be accommodated inside the frame portion 20 .

[0050] A plurality of battery cells 10 may be arranged in a first direction (y-axis direction) inside the frame portion 20 , and each battery cell 10 may have a terminal portion 11 on an upper surface and a vent portion 13 (eg, also on the upper surface) through which gas is exhausted.

[0051] The bus bar holder 30 may be disposed on upper portions of the plurality of battery cells 10 .

[0052] Figure 3 is a perspective view schematically showing a bus bar holder according to one or more embodiments of the present disclosure, Figure 4 The present invention schematically illustrates one or more embodiments of the present invention. Figure 3 A bottom perspective view of the bus bar holder, and Figure 5 The present invention schematically illustrates one or more embodiments of the present invention. Figure 3 A cross-sectional view of a bus bar holder.

[0053] like Figures 3 to 5 As shown in , the bus bar holder 30 may be formed with openings 31 through which the terminal parts 11 of the plurality of battery cells 10 are exposed. The terminal parts 11 may be welded to the bus bar 50 in a state of being exposed at the openings 31. The bus bar holder 30 may be formed of a plastic composite material.

[0054] The duct 40 may be formed in the bus bar holder 30 to guide the exhaustion of gas exhausted from the battery cells 10 in a direction (x-axis direction) orthogonal to (eg, perpendicular to) the first direction (y-axis direction).

[0055] The duct 40 may guide the gas exhausted from each of the vent portions 13 of the plurality of battery cells 10 to be exhausted in a lateral direction (x-axis direction) of the bus bar holder 30 .

[0056] For example, the conduits 40 may include a plurality of first conduits 41 formed in a first edge direction of the bus bar holder 30 (e.g., in a direction toward a first edge of the bus bar holder 30 along the lateral direction) and a plurality of second conduits 43 formed in a second edge direction of the bus bar holder 30 opposite to the first edge direction (e.g., in a direction toward a second edge of the bus bar holder 30 along the lateral direction).

[0057] The first duct 41 and the second duct 43 may be formed in a first edge direction and a second edge direction orthogonal (e.g., perpendicular) to the first direction which is the length direction of the bus bar holder 30 , respectively, and arranged in plural in the first direction to facilitate the discharge of gas in the first edge direction and the second edge direction of the bus bar holder 30 .

[0058] The first conduit 41 may include: a plurality of first connectors 411 connected at one side to the exhaust portion 13 of any battery cell 10 among the plurality of battery cells 10 , through which gas may flow in; and a plurality of first pipes 413 guiding the gas that may flow in through the first connectors 411 toward the first edge of the bus bar holder 30 .

[0059] The first connector 411 forms a portion of the first duct 41 and may be formed to be connected (eg, may be connected) to the vent 13 formed in the battery cell 10. Thus, the first connector 411 may be formed such that gas exhausted from the battery cell 10 flows into the first duct 413.

[0060] The first connection member 411 may be formed with a first inlet pipe 411 a that is opened (eg, has an opening) to allow the gas exhausted from the exhaust portion 13 to flow in.

[0061] The first connector 411 is formed in the bus bar holder 30 in a rectangular shape covering the vent 13 and can be stably connected to the rectangular vent 13. The first connector 411 can be changed to an appropriate or suitable shape in response to a change in the shape of the vent 13.

[0062] The first connector 411 may be connected to the vent 13 formed in some of the plurality of battery cells 10 .

[0063] In one or more embodiments, the first connector 411 may be connected to the vent portion 13 of one of a pair of adjacent battery cells 10 among the plurality of battery cells 10 arranged inside the frame portion 20 in the first direction.

[0064] In one or more embodiments, the second connector 431, which will be described in more detail later, may be connected to the vent 13 of the other battery cell 10 of a pair of adjacent battery cells 10. For example, the first connector 411 and the second connector 431 may be alternately connected to the vents 13 of the plurality of battery cells 10, respectively.

[0065] On one side of the first connector 411 , a first duct 413 may be connected to discharge gas from the exhaust portion 13 of the battery cell 10 .

[0066] The first duct 413 may be at the upper portion of the bus bar holder 30. The first duct 413 may be connected to the first connector 411 on one side and extend with a longer length in the first edge direction of the bus bar holder 30 on the other side (e.g., the first duct 413 may extend from one end connected to the first connector 411 to the other end located at or near the first edge of the bus bar holder 30), so that the gas may be discharged to the outside of the bus bar holder 30.

[0067] In one or more embodiments, the first duct 413 may include a first connection duct 413 a connected to the first connection piece 411 and a first exhaust duct 413 b connected to the first connection duct 413 a to exhaust the gas in the first edge direction of the bus bar holder 30 .

[0068] The first connection pipe 413 a is a component that connects the first connection member 411 and the first exhaust pipe 413 b , and may be obliquely connected between the first connection member 411 and the first exhaust pipe 413 b .

[0069] Figure 6 The present invention schematically illustrates one or more embodiments of the present invention. Figure 3 A top plan view of a major portion of a discharge duct of a bus bar holder having an inclined (eg, slanted) connection with a connecting duct.

[0070] like Figure 6 As shown in, in one or more embodiments, the first connecting pipe 413a can be connected to the first connecting member 411 and the first exhaust pipe 413b at an inclined first angle A relative to the first exhaust pipe 413b, and the first angle A has a range of about 45° to about 150°.

[0071] The first connection duct 413a is connected obliquely between the first connector 411 and the first exhaust duct 413b as described above to ensure that the first exhaust duct 413b is arranged between a pair of adjacent battery cells 10 relative to the position where the exhaust portion 13 of the battery cell 10 is formed.

[0072] Therefore, the gas exhausted from the exhaust portion 13 of the battery cell 10 does not move at (on) the upper surface of the battery cell 10, but moves and is exhausted along the first exhaust duct 413b at a position between the battery cells 10, and thus damage to the battery cell 10 caused by high-temperature gas can be prevented or reduced.

[0073] Because one side of the first exhaust duct 413 b is connected to the first connecting duct 413 a so that the gas flows toward the first side (e.g., the first edge of the bus bar holder 30), and the other side of the first exhaust duct 413 b extends in the direction of the first edge of the bus bar holder 30, the gas can be exhausted in the direction of the first edge of the bus bar holder 30.

[0074] The first exhaust duct 413b is formed to protrude toward the upper portion of the bus bar holder 30 at a position between the plurality of battery cells 10 and may be formed to facilitate exhaust of gas from the battery cells to the outside without causing damage to the battery cells by gas flowing in through the first connection duct 413a.

[0075] Figure 7 is a perspective view schematically showing a main portion of a bus bar holder in which a drain duct is formed according to one or more embodiments of the present disclosure.

[0076] like Figure 7 As shown in FIG. 4 , the first exhaust duct 413 b may have a gas flow path 412 of a trapezoidal cross-section formed therein, and may protrude toward an upper portion of the bus bar holder 30 .

[0077] In one or more embodiments, a plurality of second conduits 43 may be formed in a second edge direction orthogonal (e.g., perpendicular) to the first direction and arranged in the bus bar holder 30 in the first direction, and may extend in a second edge direction of the bus bar holder 30 opposite to the first edge direction, and may be formed to protrude toward an upper portion of the bus bar holder 30.

[0078] Refer again Figure 3 and Figure 4 The second duct 43 may include: a plurality of second connectors 431 connected to the exhaust portion 13 of the battery cell 10 between the plurality of first connectors 411, through which gas may flow in; and a plurality of second pipes 433, which guide the gas that may flow in through the second connectors 431 to be discharged in the second edge direction of the bus bar holder 30.

[0079] The second connector 431 forms a portion of the second duct 43 and may be connected to the vent 13 of the battery cell 10 at a position between the plurality of first connectors 411 .

[0080] In one or more embodiments, the second connector 431 may be connected to one of a pair of adjacent battery cells 10 among the plurality of battery cells 10 arranged inside the frame part 20 in the first direction.

[0081] For example, the second connector 431 is connected to the exhaust portion 13 at a position between the plurality of first connectors 411, and the first connectors 411 and the second connectors 431 may be alternately connected to the plurality of exhaust portions 13. Therefore, the plurality of first ducts 41 and the plurality of second ducts 43 may be formed in the bus bar holder 30 in a staggered (or alternating) manner.

[0082] The second connector 431 may be formed to allow gas exhausted from the battery cells 10 to flow into the second duct 433 .

[0083] The second connection piece 431 may be formed with a second inlet pipe 431 a that is opened (eg, has an opening) to allow the gas exhausted from the exhaust portion 13 to flow in.

[0084] The second connection piece 431 is formed in the bus bar holder 30 in a rectangular shape covering the vent portion 13 and can be stably connected to the rectangular vent portion 13. The second connection piece 431 can also be changed to an appropriate or suitable shape corresponding to the shape of the vent portion 13.

[0085] The second duct 433 is connected to a side surface of the second connector 431 so that the gas exhausted from the vent portion 13 of the battery cell 10 can be exhausted.

[0086] The second duct 433 may be located at an upper portion of the bus bar holder 30. The second duct 433 may be connected to the second connection piece 431 on one side and extend with a longer length in the second edge direction of the bus bar holder 30 on the other side (e.g., the second duct 433 may extend from one end connected to the second connection piece 431 to the other end located at or near the second edge of the bus bar holder 30), so that the gas exhausted from the exhaust portion 13 may be guided and exhausted to the outside of the bus bar holder 30.

[0087] In one or more embodiments, the second duct 433 may include a second connection duct 433 a connected to the second connection piece 431 and a second exhaust duct 433 b connected to the second connection duct 433 a to exhaust the gas in the second edge direction of the bus bar holder 30 .

[0088] The second connection pipe 433 a is a member connecting the second connection member 431 and the second exhaust pipe 433 b , and may be obliquely connected between the second connection member 431 and the second exhaust pipe 433 b .

[0089] In one or more embodiments, the second connection pipe 433a may be connected to the second connector 431 obliquely at a first angle ranging from about 45° to about 150° with respect to the second exhaust pipe 433b.

[0090] The oblique connection of the second connection duct 433a between the second connection member 431 and the second exhaust duct 433b is intended to ensure that the second exhaust duct 433b is arranged at a position between a pair of adjacent battery cells 10 relative to a position where the vent 13 of the battery cell 10 is formed.

[0091] Therefore, the gas exhausted from the exhaust portion 13 of the battery cell 10 does not move at (on) the upper surface of the battery cell 10, but moves and is discharged along the second exhaust duct 433b at a position between the battery cells 10, thereby preventing or reducing damage to the battery cell 10 caused by high-temperature gas.

[0092] One side of the second exhaust duct 433b is connected to the second connecting duct 433a so that the gas flows to the second side (e.g., the second edge of the bus bar holder 30), and the other side of the second exhaust duct 433b extends in the second edge direction of the bus bar holder 30 and can be formed to allow the gas to be discharged in the second edge direction.

[0093] As described above, the second exhaust duct 433b is formed to protrude toward the upper portion of the bus bar holder 30 at a position between the plurality of battery cells 10, and may be formed to facilitate exhaust of gas from the battery cells to the outside without causing damage to the battery cells caused by the gas flowing in through the second connection duct 433a.

[0094] The second exhaust duct 433 b may have a gas flow path 412 of a trapezoidal cross-section formed therein, and may protrude toward an upper portion of the bus bar holder 30 .

[0095] As described above, the first and second ducts 41 and 43 may extend in the first and second edge directions, respectively, at positions staggered with each other (eg, alternating with each other) in the bus bar holder 30 .

[0096] Therefore, the gas exhausted from the vent portions 13 of the plurality of battery cells 10 may be exhausted in the lateral direction of the bus bar holder 30 through the first duct 41 and the second duct 43 .

[0097] In one or more embodiments, the first duct 41 and / or the second duct 43 are formed in the bus bar holder 30 at locations between the plurality of battery cells 10 , preventing or reducing damage to the battery cells due to high temperature heat during a gas exhaust process, thereby improving durability.

[0098] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and / or in this specification, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0099] As used herein, the terms "substantially," "approximately," and similar terms are used as terms of approximation rather than as terms of degree, and are intended to account for the inherent deviations in measured or calculated values ​​that one of ordinary skill in the art would recognize. "Substantially," as used herein, includes the stated value, and means within an acceptable range of deviation for a particular value as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "substantially" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of a stated value.

[0100] Any numerical range disclosed and / or described herein is intended to include all sub-ranges of the same numerical precision contained in the described range. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the described minimum value 1.0 and the described maximum value 10.0 (and including the described minimum value 1.0 and the described maximum value 10.0), that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit described herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit described in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification and the claims to explicitly describe any sub-ranges contained in the scope explicitly described here.

[0101] Furthermore, when describing embodiments of the present disclosure, the use of “may” refers to “one or more embodiments of the present disclosure.”

[0102] Portable devices, vehicles and / or batteries (e.g., battery controllers and / or any other related devices or components) according to embodiments of the present disclosure described herein may be implemented using any suitable hardware, firmware (e.g., application specific integrated circuits), software, or a combination of software, firmware, and hardware. For example, the various components of the device may be formed on an integrated circuit (IC) chip or on separate IC chips. In addition, the various components of the device may be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on a substrate. In addition, the various components of the device may be processes or threads that execute computer program instructions and interact with other system components to perform the various functions described herein, running on one or more processors in one or more computing devices. The computer program instructions are stored in a memory, which may be implemented in a computing device using a standard memory device (such as a random access memory (RAM) as an example). The computer program instructions may also be stored in other non-temporary computer-readable media (such as a CD-ROM, a flash drive, etc. as an example). Furthermore, those skilled in the art will recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or the functionality of a particular computing device may be distributed across one or more other computing devices without departing from the scope of the embodiments of the present disclosure.

[0103] It will be understood that, unless otherwise described, the description of features or aspects in each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Therefore, as will be apparent to one of ordinary skill in the art, unless otherwise expressly noted, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. It will be understood that the foregoing is an illustration of various example embodiments and is not to be construed as being limited to the specific embodiments disclosed herein, and that various modifications to the disclosed embodiments as well as other example embodiments are intended to be included within the scope of the present disclosure as defined in the appended claims and their equivalents.

[0104] Reference numerals 10: Battery Cell 11: Terminal 13: Exhaust 20: Framework 21: First side frame 23: Second side frame 25: First end frame 27: Second end frame 30: Busbar holder 40: Catheter 41: First catheter 411: First connecting piece 411a: First inlet pipe 413: First Pipeline 413a: First connection pipeline 413b: First discharge pipe 43: Second catheter 431: Second connecting piece 431a: Second inlet pipe 433: Second pipeline 433a: Second connection pipeline 433b: Second discharge pipe 50: Bus bar.

Claims

1. A secondary battery module, comprising: a plurality of battery cells arranged one above the other in a first direction, each of the plurality of battery cells including a terminal portion on an upper surface and a vent portion for exhausting gas; a frame portion for accommodating the plurality of battery cells; a bus bar holder including: an opening exposing the terminal portions of the plurality of battery cells; and a conduit for guiding the exhaust of the gas; and A bus bar is positioned in the opening of the bus bar holder and electrically connects adjacent battery cells among the plurality of battery cells.

2. The secondary battery module according to claim 1, wherein: The duct is for guiding the gas exhausted from at least one of the exhaust portions of the plurality of battery cells toward two opposite edges of the bus bar holder.

3. The secondary battery module according to claim 2, wherein: The conduit is connected to the at least one exhaust portion and extends toward one of the two opposing edges of the bus bar holder.

4. The secondary battery module according to claim 3, wherein: The catheter comprises: a plurality of first conduits for guiding the exhaust of the gas in a direction of a first edge of the bus bar holder; and A plurality of second conduits are used to guide the discharge of the gas in a second edge direction of the bus bar holder opposite to the first edge direction.

5. The secondary battery module according to claim 4, wherein: The plurality of first conduits include: a plurality of first connectors, respectively connected to the exhaust portions of some of the plurality of battery cells; and A plurality of first ducts are used to guide the gas from the plurality of first connectors in the direction of the first edge of the bus bar holder.

6. The secondary battery module according to claim 5, wherein: At least one of the plurality of first connectors includes a first inlet pipe connected to a corresponding one of the vents of the plurality of battery cells and having an opening allowing the gas to flow in.

7. The secondary battery module according to claim 5, wherein: The plurality of first ducts are located at an upper portion of the bus bar holder, and at least one first duct among the plurality of first ducts is located at a position between the plurality of battery cells.

8. The secondary battery module according to claim 6, wherein: The at least one first connection member among the plurality of first connection members has a rectangular shape and covers the corresponding exhaust portion.

9. The secondary battery module according to claim 7, wherein: The at least one first pipeline of the plurality of first pipelines comprises: a first connecting pipe connected to a corresponding first connecting member among the plurality of first connecting members; and A first exhaust pipe is connected to the first connection pipe to exhaust the gas in the first edge direction of the bus bar holder.

10. The secondary battery module according to claim 9, wherein: For the at least one first pipe among the plurality of first pipes, the first connecting pipe is connected between the corresponding first connecting member and the first exhaust pipe, and is inclined at a first angle relative to the first exhaust pipe.

11. The secondary battery module according to claim 10, wherein: The first angle is in the range of 45° to 150° relative to the first exhaust conduit.

12. The secondary battery module according to claim 11, wherein: For the at least one first duct among the plurality of first ducts, the first exhaust duct is located at a position between adjacent battery cells among the plurality of battery cells in the bus bar holder.

13. The secondary battery module according to claim 12, wherein: For the at least one first pipe of the plurality of first pipes, the first exhaust pipe has a trapezoidal flow path therein to allow exhaust of the gas.

14. The secondary battery module according to claim 13, wherein: The plurality of second conduits include: a plurality of second connectors respectively connected to the exhaust portions of the remaining battery cells among the plurality of battery cells, the plurality of second connectors being alternated with the plurality of first connectors in a length direction of the bus bar holder; and A plurality of second pipes are used to guide the gas from the plurality of second connecting members in the second edge direction of the bus bar holder.

15. The secondary battery module according to claim 14, wherein: At least one of the plurality of second connectors includes a second inlet pipe connected to a corresponding one of the vents of the plurality of battery cells and having an opening allowing the gas to flow in.

16. The secondary battery module according to claim 15, wherein: The plurality of second ducts are located at an upper portion of the bus bar holder, and at least one second duct among the plurality of second ducts is located at a position between the plurality of battery cells.

17. The secondary battery module according to claim 16, wherein: The at least one second pipeline of the plurality of second pipelines comprises: a second connecting pipe connected to a corresponding second connecting member among the plurality of second connecting members; and A second exhaust pipe is connected to the second connection pipe to exhaust the gas in a second edge direction of the bus bar holder opposite to the first edge direction.

18. The secondary battery module according to claim 17, wherein: For the at least one second pipe among the plurality of second pipes, the second connecting pipe is connected between the corresponding second connecting member and the second exhaust pipe, and is inclined at the first angle relative to the second exhaust pipe.

19. The secondary battery module according to claim 1, wherein: The bus bar holder is a plastic composite material.

20. The secondary battery module according to claim 19, wherein: The terminal portions of the plurality of battery cells and the bus bar are joined via welding.

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