Battery pack

Abstract

To provide a battery pack.SOLUTION: A battery pack includes a battery cell accommodated inside a housing, and the housing including an attachment area recessed on one surface to provide a location for attachment of an attachment, and the attachment area includes a through-hole and an engraved pattern, the through-hole is formed to communicate with the interior area of the housing, and the engraved pattern is configured to provide an air flow path between the attachment and the attachment area.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a battery pack. [Background technology]

[0002] Secondary batteries are batteries that can be charged and discharged multiple times for repeated use. Secondary batteries are used as energy sources for mobile devices, electric vehicles, hybrid vehicles, electric bicycles, uninterruptible power supplies, etc. Depending on the type of external device they are used in, they are used in the form of a battery or in a module form in which multiple batteries are connected together to form a single unit. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention provides a battery pack that includes information about the battery pack and allows attachments to be stably attached to a housing.

[0004] Another problem to be solved by the present invention is to prevent the formation of air bubbles between the adhesion area and the adhesion. [Means for solving the problem]

[0005] A battery pack for solving the above problem includes a battery cell accommodated inside a housing, and the housing including an attachment area recessed on one surface to provide a position for attachment of an attachment, the attachment area including a through-hole and an engraved pattern, the through-hole being formed to be connected to an interior area of ​​the housing, and the engraved pattern being configured to provide an air flow path between the attachment and the attachment area.

[0006] The adhesive region may be recessed from the one surface to a first depth, and the recessed pattern may be recessed from the one surface to a second depth deeper than the first depth, thereby providing a flow path for the air.

[0007] The recessed pattern may be formed to surround the through-hole.

[0008] The air flow passage may be configured such that one end thereof is connected to the through-hole.

[0009] The through-hole may have a circular cross section.

[0010] The recessed patterns may be formed symmetrically around the through hole.

[0011] The recessed patterns may be formed radially from the through hole.

[0012] The attachment region may include a water-blocking line formed by surrounding the recessed pattern.

[0013] The water-blocking line may be recessed into the second depth.

[0014] The attachment region may include a first attachment region and a second attachment region, each of which includes the through portion and the recessed pattern.

[0015] The attachment area may include an auxiliary support portion formed at a boundary where the first attachment area and the second attachment area meet.

[0016] The auxiliary support portion may be recessed from the one surface to a third depth that is deeper than the first depth.

[0017] The auxiliary support portion may be disposed between adjacent penetration portions.

[0018] The sum of the sizes of the regions having the first depth in the attachment region may be 50% or more of the size of the attachment region. [Effects of the Invention]

[0019] The battery pack according to the present invention may provide an attachment area configured to allow an attachment to be stably attached on one surface of the housing.

[0020] The battery pack according to the present invention can prevent air bubbles from being formed between the attachment and the attachment area. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view of a battery pack according to an exemplary embodiment. [Figure 2] FIG. 2 is a perspective view of a battery pack with an upper housing separated according to an exemplary embodiment. [Figure 3] FIG. 3 is a perspective view of FIG. 2 with the inner cover separated. [Figure 4] FIG. 10 is an enlarged view illustrating an attachment area according to an exemplary embodiment. [Figure 5] 1 is a diagram illustrating a water ingress prevention line according to an exemplary embodiment; [Figure 6] 1 is a conceptual diagram illustrating a water ingress prevention line according to an exemplary embodiment. [Figure 7] 1 is a perspective view illustrating an attachment area of ​​a housing according to an exemplary embodiment. [Figure 8] FIG. 8 is a schematic conceptual diagram of a cross section of the adhesion region shown in FIG. 7 taken along line AA. DETAILED DESCRIPTION OF THE INVENTION

[0022] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. First, the terms and phrases used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts consistent with the technical concept of the present invention, based on the principle that the inventor can appropriately define the concepts of terms to best describe his or her invention. Therefore, it should be understood that the embodiments described in this specification and the configurations illustrated in the drawings are merely some of the most preferred embodiments of the present invention and do not represent the technical concept of the present invention. Therefore, it should be understood that various equivalents and modifications may exist as of the time of filing of this application. Furthermore, as used in this specification, the words "comprise" and / or "comprising" specify the presence of a stated shape, number, step, operation, member, element, and / or group thereof, but do not exclude the presence or addition of one or more other shapes, numbers, operations, members, elements, and / or groups. Furthermore, when describing an embodiment of the present invention, the words "may" and "is also" may include "one or more embodiments of the present invention."

[0023] In order to facilitate understanding of the invention, the accompanying drawings may not be drawn to scale, and the dimensions of some components may be exaggerated. In addition, the same reference numerals are used to refer to the same components in different embodiments.

[0024] A statement that two comparison objects are "identical" means that they are "substantially identical." Therefore, "substantially identical" may include deviations that are considered low in the art, for example, deviations within 5%. Furthermore, "uniformity of a parameter in a given region" means uniformity on average.

[0025] Even if terms such as "first," "second," etc. are used to describe various elements, it goes without saying that these elements are not limited by these terms. These terms are used only to distinguish one element from another, and it goes without saying that a first element is also a second element unless otherwise specified.

[0026] Throughout the specification, unless specifically stated to the contrary, each element may be singular or plural.

[0027] When a structure is placed "on top (or bottom)" of a component or "on (or under)" a component, it does not only mean that the structure is placed in contact with the top surface (or bottom surface) of the component, but also that another structure is interposed between the component and the structure placed on (or under) the component.

[0028] Furthermore, when a component is described as being "coupled," "coupled," or "connected" to another component, it should be understood that the components are directly coupled or connected to each other, but that other components may be "interposed" between the components, or that each component may be "coupled," "coupled," or "connected" through other components. Furthermore, when a component is said to be electrically coupled to another component, this includes not only direct coupling, but also coupling via an intervening element.

[0029] Throughout the specification, "A and / or B" means A, B, or A and B, unless specifically stated to the contrary. That is, "and / or" includes any and all combinations of the listed items. "C through D" means at least C and at most D, unless specifically stated to the contrary.

[0030] A battery pack 1 according to an exemplary embodiment will now be described with reference to the accompanying drawings.

[0031] Fig. 1 is a perspective view of a battery pack 1 according to an exemplary embodiment. Fig. 2 is a perspective view of the battery pack 1 according to the exemplary embodiment with the upper housing 32 separated. Fig. 3 is a perspective view of Fig. 2 with the inner cover 320 separated.

[0032] 1 to 3 , a battery pack 1 according to an exemplary embodiment may include a housing 3 configured to accommodate battery cells 10. The battery cells 10 may be accommodated inside the housing 3. The housing 3 may include a lower housing 31, an upper housing 32, and an inner cover 320. The lower housing 31, the upper housing 32, and the inner cover 320 may protect the battery cells 10. The lower housing 31 may include a receiving portion 100 that receives the battery cells 10. The battery cells 10 may be received in the receiving portion 100 of the lower housing 31. The inner cover 320 may cover the receiving portion 100 of the lower housing 31 from above. The upper housing 32 may be coupled to the lower housing 31. The inner cover 320 may cover the battery cells 10 from above. The upper housing 32 may cover the inner cover 320 from above. The inner cover 320 may be coupled to the lower housing 31. The battery cells 10 can be doubly protected by the inner cover 320 and the upper housing 32. However, the above description of the arrangement and functions of the lower housing 31, the upper housing 32, and the inner cover 320 is merely an example and is not intended to be limiting.

[0033] The housing 3 according to the exemplary embodiment may configure the appearance of the battery pack 1. The housing 3 may communicate information related to the battery pack 1 to a user. When the housing 3 communicates information related to the battery pack 1 to a user, information related to the battery pack 1 provided on the surface 30 of the housing 3 is communicated to the user. In the above description, the information related to the battery pack 1 provided on the surface 30 of the housing 3 includes not only information directly provided by the surface 30 of the housing 3, but also information indirectly provided by the surface 30 of the housing 3 as a result of an object including information related to the battery pack 1 being placed on the surface 30 of the housing 3. In other words, information related to the battery pack 1 may be provided to a user by placing an object including information related to the battery pack 1 on the surface 30 of the housing 3.

[0034] Meanwhile, the battery pack 1 has predetermined specifications. The specifications of the battery pack 1 include, for example, information regarding the voltage, capacity, output, and handling method. The specifications of the battery pack 1 also include, for example, information regarding the size and weight of the battery pack 1. However, the information regarding the specifications of the battery pack 1 is not limited to the above examples and may include a wide range of other useful information that can be communicated to the user of the battery pack 1. If the information regarding the specifications of the battery pack 1 is displayed on the exterior of the battery pack 1, the user can use the battery pack 1 according to the intended use.

[0035] In addition, the predetermined specifications of the battery pack 1 may be set differently according to the needs of the user. In other words, the battery pack 1 may have different specifications depending on the use and applicable product group. In this case, information regarding the specifications of the battery pack 1 may be displayed on the exterior of the battery pack 1 in order to quickly convey information regarding the specifications of the battery pack 1 to the user.

[0036] FIG. 4 is an enlarged view illustrating the attachment area 4 according to an exemplary embodiment.

[0037] 1 to 4 , the housing 3 according to an exemplary embodiment may include an attachment area 4 formed on one surface 30. Here, the one surface 30 of the housing 3 is also a surface 30 that constitutes part of the exterior of the battery pack 1. The attachment area 4 may provide a location where an attachment 2 is attached to the exterior of the battery pack 1. The attachment area 4 may provide a location where the attachment 2 is attached on the one surface 30 of the housing 3. The attachment area 4 may be formed wider than the attachment 2. Here, the attachment 2 may include information related to the battery pack 1. For example, the attachment 2 may include information related to the specifications of the battery pack 1, but this is merely an exemplary explanation and is not intended to be limiting. The attachment 2 may also have a predetermined thickness. For example, the thickness of the attachment 2 may be, but is not limited to, 0.1 mm to 0.2 mm. For example, the thickness of the attachment 2 may be, but is not limited to, 0.12 mm to 0.13 mm.

[0038] According to an exemplary embodiment, the attachment region 4 of the housing 3 may be recessed to provide a position on one surface 30 of the housing 3 where the attachment material 2 is attached. The attachment region 4 may be recessed inward from one surface 30 of the housing 3. The recessed depth of the attachment region 4 is thinner than the thickness of the attachment material 2. When the recessed depth of the attachment region 4 is thinner than the thickness of the attachment material 2, the attachment material 2 attached to the attachment region 4 may be positioned higher than the surface 30 of the housing 3. For example, the recessed depth of the attachment region 4 from the surface 30 of the housing 3 may be, but is not limited to, 0.01 mm or more and 0.05 mm or less.

[0039] Meanwhile, during the process of attaching the attachment 2 to the attachment area 4, air may be present between the attachment area 4 and the attachment 2. That is, during the process of attaching the attachment 2 to the attachment area 4, air bubbles may form between the attachment area 4 and the attachment 2. If the air bubbles formed between the attachment area 4 and the attachment 2 are not expelled, the appearance quality of the battery pack 1 may be impaired. If the air bubbles formed between the attachment area 4 and the attachment 2 are not expelled, the adhesion strength of the attachment 2 on the attachment area 4 may be low. If the air bubbles formed between the attachment area 4 and the attachment 2 are not expelled, the condition of the attachment 2 may be impaired. More specifically, if the air bubbles formed between the attachment area 4 and the attachment 2 are not expelled, the air bubbles may repeatedly contract and expand due to temperature changes in the battery pack 1, thereby impairing the condition of the attachment 2. In particular, if the air bubbles formed between the attachment area 4 and the attachment 2 aggregate in a specific area, the condition of the attachment 2 may be impaired.

[0040] According to an exemplary embodiment, the attachment region 4 may include a through-hole 5. The through-hole 5 may be provided to communicate with the interior region of the housing 3. The through-hole 5 may connect the surface 30 of the housing 3 to the interior region of the housing 3 within the attachment region 4. The through-hole 5 may induce air bubbles formed between the attachment region 4 and the attachment 2 to migrate to the interior region of the housing 3. Air bubbles formed between the attachment region 4 and the attachment 2 may migrate to the interior region of the housing 3. The through-hole 5 may prevent air bubbles from forming between the attachment region 4 and the attachment 2. The through-hole 5 may prevent the appearance quality of the battery pack 1 from being impaired. The through-hole 5 may prevent the condition of the attachment 2 on the attachment region 4 from being impaired. However, the function and role of the through-hole 5 are not limited to those described above.

[0041] The penetration 5 according to the exemplary embodiment may have a predetermined cross-sectional shape within the attachment region 4 and connect the surface 30 of the housing 3 with the interior region of the housing 3. For example, the penetration 5 may have a circular cross-sectional shape, but is not limited thereto.

[0042] The attachment region 4 according to an exemplary embodiment may include an engraved pattern 6. The engraved pattern 6 may be configured to provide an air flow path 60 between the attachment region 2 and the attachment region 4. The engraved pattern 6 may be recessed on the attachment region 4 to provide the air flow path 60 between the attachment regions 4. The engraved pattern 6 may provide multiple air flow paths 60. The engraved pattern 6 may be formed on the attachment region 4 by a laser marking process, but is not limited to this. For example, the engraved pattern 6 may be formed by a gas venting process. In addition to the above process, any process for forming an engraved pattern 6 that provides an air flow path 60 between the attachment region 4 and the attachment 2 may also be used in the present disclosure.

[0043] The recessed pattern 6 according to the exemplary embodiment may provide air flow paths 60 for air bubbles formed between the attachment area 4 and the attachment 2. The recessed pattern 6 may prevent air bubbles formed between the attachment area 4 and the attachment 2 from concentrating in a specific area.

[0044] The recessed pattern 6 according to the exemplary embodiment may be formed surrounding the through-hole 5. That is, the through-hole 5 may be disposed in the center of the attachment area 4, and the recessed pattern 6 may be disposed in the peripheral area. The air flow path 60 provided by the recessed pattern 6 may be formed surrounding the through-hole 5.

[0045] The air flow path 60 provided by the recessed pattern 6 according to the exemplary embodiment may be configured such that one end is connected to the through-hole 5. When one end of the air flow path 60 is connected to the through-hole 5, air bubbles formed between the attachment area 4 and the attachment 2 may move to the interior area of ​​the housing 3 via the air flow path 60.

[0046] The recessed patterns 6 according to the exemplary embodiment may be formed symmetrically around the through-hole 5. When the recessed patterns 6 are formed symmetrically around the through-hole 5, the deposit 2 may be stably attached to the attachment region 4. More specifically, the recessed patterns 6 may be formed radially around the through-hole 5. When the recessed patterns 6 are formed radially around the through-hole 5, the deposit 2 may be stably attached to the attachment region 4.

[0047] The recessed pattern 6 according to the exemplary embodiment may induce air bubbles formed between the attachment area 4 and the attachment 2 to move to the interior area of ​​the housing 3. The recessed pattern 6 may prevent air bubbles from forming between the attachment area 4 and the attachment 2. The recessed pattern 6 may prevent deterioration of the appearance quality of the battery pack 1. The recessed pattern 6 may prevent deterioration of the condition of the attachment 2 on the attachment area 4. However, the above description regarding the arrangement and function of the recessed pattern 6 is merely an example and is not limited thereto.

[0048] On the other hand, when the area of ​​the attachment 2 is large, a plurality of attachment regions 4 may be formed. The attachment 2 may be attached across a plurality of attachment regions 4. When a plurality of attachment regions 4 are formed, the attachment ability of the attachment 2 is excellent.

[0049] According to an exemplary embodiment, there may be a plurality of adhesive regions 4. Each of the plurality of adhesive regions 4 may include a through portion 5 and a recessed pattern 6. The adhesive region 4 may include a first adhesive region 41 and a second adhesive region 42. The first adhesive region 41 and the second adhesive region 42 may include a through portion 5 and a recessed pattern 6, respectively.

[0050] According to an exemplary embodiment, the first and second attachment regions 41 and 42 may be arranged side by side. Arranging the first and second attachment regions 41 and 42 side by side also means that the first and second attachment regions 41 and 42 are connected to each other on one surface 30 of the housing 3. However, the arrangement of the first and second attachment regions 41 and 42 is not limited to the above description.

[0051] On the other hand, if the area of ​​the recessed patterns 6 arranged in the first attachment region 41 and the second attachment region 42 is excessive, the adhesive strength of the attachment material 2 attached to the attachment region 4 may be reduced. In order for the attachment material 2 to be stably attached to the attachment region 4, an auxiliary member for supporting the attachment material 2 may be required.

[0052] The attachment region 4 according to the exemplary embodiment may include an auxiliary support portion 50 formed at the boundary where the first attachment region 41 and the second attachment region 42 abut. The auxiliary support portion 50 has a function of supporting the attachment 2. The auxiliary support portion 50 may provide an area on the attachment region 4 where the attachment 2 can be supported. The auxiliary support portion 50 may connect the recessed pattern 6 included in the first attachment region 41 to the recessed pattern 6 included in the second attachment region 42. The auxiliary support portion 50 may connect the air flow path 60 included in the first attachment region 41 to the air flow path 60 included in the second attachment region 42.

[0053] The auxiliary support portion 50 according to the exemplary embodiment may be recessed to a predetermined depth on the attachment region 4. The auxiliary support portion 50 may be disposed between adjacent through-holes 5. That is, the auxiliary support portion 50 may be disposed between the through-hole 5 of the first attachment region 41 and the through-hole 5 of the second attachment region 42.

[0054] According to an exemplary embodiment, the auxiliary support portion 50 may be circular. The area of ​​the auxiliary support portion 50 is greater than the cross-sectional area of ​​the through-hole 5. However, the shape and arrangement of the auxiliary support portion 50 are not limited to those described above, and the auxiliary support portion 50 may have various shapes that provide an area where the attachment 2 can be supported on the attachment area 4.

[0055] Meanwhile, it is necessary to prevent moisture from penetrating between the attachment area 4 of the housing 3 according to the exemplary embodiment and the attachment 2. In other words, it is necessary to prevent moisture from penetrating into the gap between the attachment area 4 and the attachment 2 from the outside of the battery pack 1. The water intrusion prevention line 600 formed on the attachment area 4 will be described below.

[0056] Fig. 5 is a diagram illustrating a water ingress prevention line 600 according to an exemplary embodiment. Fig. 6 is a conceptual diagram illustrating a water ingress prevention line 600 according to an exemplary embodiment.

[0057] 1 to 6 , the attachment area 4 of the housing 3 according to the exemplary embodiment may include a water-ingress prevention line 600. The attachment area 4 may include the water-ingress prevention line 600 formed by surrounding and recessing the recessed pattern 6. More specifically, the water-ingress prevention line 600 may be formed by surrounding the edge of the attachment area 4, thereby guiding the edge of the attachment 2 to be stably attached to the attachment area 4. The attachment 2 may cover the water-ingress prevention line 600 on the attachment area 4. The water-ingress prevention line 600 may guide the edge of the attachment 2 to be stably positioned on the attachment area 4, thereby preventing the recessed pattern 6 from being exposed on the surface 30 of the housing 3. The water-ingress prevention line 600 may guide the edge of the attachment 2 to be stably positioned on the attachment area 4, thereby preventing the air flow path 60 from being exposed on the surface 30 of the housing 3. The water-ingress prevention line 600 may prevent moisture from penetrating into the gap between the attachment area 4 and the attachment 2. However, the function and role of the water ingress prevention line 600 are not limited to those described above.

[0058] The water ingress prevention line 600, the recessed pattern 6, and the depth to which the water ingress prevention line 600 and the auxiliary support portion 50 are recessed on the attachment area 4 will be described in more detail below.

[0059] Fig. 7 is a perspective view illustrating the attachment region 4 of the housing 3 according to an exemplary embodiment. Fig. 8 is a schematic conceptual diagram illustrating a cross section of the attachment region 4 shown in Fig. 7 taken along line AA. However, the cross section shown in Fig. 8 is exaggerated to illustrate the attachment region 4 according to an exemplary embodiment, and the proportional relationship between the components may differ from that shown in Fig. 8.

[0060] 5 to 8, the attachment region 4 according to the exemplary embodiment may be recessed to a first depth t1 from one surface 30 of the housing 3. The first depth t1 may be, but is not limited to, 0.01 mm or more and 0.05 mm or less.

[0061] The recessed pattern 6 according to the exemplary embodiment may be recessed to a second depth t2 deeper than the first depth t1 from one surface 30 of the housing 3. By forming the recessed pattern 6 on the one surface 30 of the housing 3 to the second depth t2 deeper than the first depth t1, an air flow path 60 may be provided between the attachment area 4 and the attachment material 2 attached on the attachment area 4.

[0062] The water ingress prevention line 600 according to the exemplary embodiment may be recessed to the second depth t2. The water ingress prevention line 600 is connected to the air flow path 60 provided by the recessed pattern 6, but is not limited thereto.

[0063] According to an exemplary embodiment, the auxiliary support portion 50 may be recessed from one surface 30 of the housing 3 to a third depth t3 that is deeper than the first depth t1. The third depth t3 is deeper than the second depth t2, but is not limited thereto.

[0064] According to an exemplary embodiment, the sum of the sizes of the regions having the first depth t1 on the attachment region 4 is equal to or greater than 50% of the size of the attachment region 4. The attachment material 2 can be stably attached by the regions having the first depth t1 on the attachment region 4. However, the ratio of the size of the regions having the first depth t1 on the attachment region 4 to the size of the attachment region 4 is not limited to the above description. For example, even if the sum of the sizes of the regions having the first depth t1 on the attachment region 4 is equal to or less than 50% of the size of the attachment region 4, the auxiliary support 50 can support the attachment material 2, thereby guiding the attachment material 2 to be stably attached on the attachment region 4.

[0065] The present invention has been described based on the embodiments illustrated in the accompanying drawings, but this is merely an example, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. [Explanation of symbols]

[0066] 1 Battery pack 10 battery cells 2. Adhesion 3. Housing 4. Adhesion area 41 First attachment area 42 Second attachment area 5 Penetration 50 Auxiliary support part 6 Concave pattern 60 Air flow path 600 Flood prevention line

Claims

1. a battery cell housed inside the housing; the housing including a recessed attachment area on one surface thereof to provide a location for attachment of a material; The adhesive region includes a through portion and an engraved pattern, The through-hole is provided so as to be in communication with an internal region of the housing, The battery pack, wherein the recessed pattern is configured to provide an air flow path between the attachment and the attachment area.

2. the attachment region is recessed from the one surface to a first depth; The battery pack according to claim 1 , wherein the recessed pattern is recessed from the one surface to a second depth deeper than the first depth, thereby providing the air flow path.

3. The battery pack according to claim 2 , wherein the recessed pattern is formed to surround the through-hole.

4. The air flow path is The battery pack according to claim 3 , wherein one end is configured to be connected to the through-portion.

5. The battery pack according to claim 4 , wherein the through-hole is formed to have a circular cross section.

6. The battery pack according to claim 5 , wherein the recessed pattern is formed symmetrically around the through-hole.

7. The battery pack according to claim 6 , wherein the recessed pattern is formed radially from the through-hole as a center.

8. The battery pack according to claim 2 , wherein the attachment area includes a water-blocking line formed by surrounding the recessed pattern.

9. The battery pack according to claim 8 , wherein the water-blocking line is recessed into the second depth.

10. The battery pack of claim 9 , wherein the attachment area includes a first attachment area and a second attachment area, each of which includes the through-hole and the recessed pattern.

11. The battery pack of claim 10 , wherein the attachment area includes an auxiliary support portion formed at a boundary where the first attachment area and the second attachment area abut.

12. The battery pack according to claim 11 , wherein the auxiliary support portion is recessed from the one surface to a third depth that is deeper than the first depth.

13. The battery pack according to claim 12 , wherein the auxiliary support portion is disposed between adjacent ones of the penetration portions.

14. The sum of the sizes of the regions having the first depth in the attachment region is The battery pack of claim 13 , wherein the adhesive layer is 50% or more of the size of the attachment area.

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