Patent Publication Number: US-2021167437-A1

Title: Battery module, and battery pack and vehicle comprising the same

Description:
TECHNICAL FIELD 
     The present disclosure relates to a battery module having a plurality of secondary batteries, and a battery pack and a vehicle comprising the same, and more particularly, to a battery module capable of cooling a battery cell, and a battery pack and a vehicle comprising the same. 
     The present application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2016-0067469 filed on May 31, 2016 in the Republic of Korea, and under 35 U.S.C. § 365 to PCT/KR2016/014956 filed on Dec. 20, 2016, the disclosures of which are incorporated herein by reference. 
     BACKGROUND 
     Secondary batteries are highly applicable to a wide range of products and have electrical characteristics with high energy density. Such secondary batteries are applied not only to portable electronic devices but also to electric vehicles, hybrid vehicles, and electric power storage devices, driven by electric driving sources. 
     A battery pack applied to an electric vehicle and the like is configured so that a plurality of battery modules, each having a plurality of battery cells, are connected to obtain a high output. Each battery cell is an electrode assembly and may be repeatedly charged and discharged by an electrochemical reaction among components including a positive electrode current collector, a negative electrode current collector, a separator, an active material, an electrolyte and the like. 
     Meanwhile, along with an increased need for a large capacity structure and utilization as energy storage sources in recent years, there is a growing demand for a multi-module battery pack in which a plurality of battery modules, each having a plurality of secondary batteries connected in series or in parallel, are aggregated. 
     A battery pack of a multi-module structure is manufactured so that a plurality of secondary batteries are densely packed in a narrow space, and thus it is important to easily discharge the heat generated from each secondary battery. The secondary battery is charged or discharged by means of electrochemical reactions as described above. Thus, if the heat of the battery module generated during the charging and discharging process is not effectively removed, heat accumulation occurs. In addition, the deterioration of the battery module is promoted, and in occasions, ignition or explosion may occur. 
     Therefore, a high-output large-capacity battery module, or a battery pack having the same, requires a cooling device that cools battery cells included therein. 
     Generally, the cooling device is classified into two types of cooling device, namely an air cooling type and a water cooling type, but the air cooling type is more widely used than the water cooling type due to short circuit or waterproofing of the secondary battery. 
     Since one battery cell may not produce a large power, a commercially available battery module generally includes a plurality of battery cells as many as necessary so as to be stacked and packaged in a module case. In addition, in order to keep the temperature of the secondary battery at a proper level by cooling the heat generated while individual battery cells are producing electricity, a plurality of cooling pins corresponding to the area of the battery cells are inserted as a heat dissipating member throughout the battery cells. The cooling pins absorbing heat from each battery cell are connected to a single cooling plate to transfer the heat to the cooling plate. The cooling plate transfers the heat, received from the cooling pins, to a heat sink, and the heat sink is cooled by cooling water or cooling air. 
     Generally, when the battery cell and the cooling pins are coupled, a heat transfer material capable of minimizing the thermal resistance at the contact interface is applied to the interface to adhere the battery cell and the cooling pins. However, when the battery cell and the cooling pins are coupled using such a material, a material cost and a process cost increase due to the heat transfer material. In addition, it is difficult to uniformly apply the heat transfer material to the areas of the battery cell and the cooling pins, and the cooling performance may be deteriorated due to irregularity of the contact surface after drying. Moreover, when the battery cell swells, the cooling performance may be deteriorated due to the separation of the contact surface. Also, when the battery cell is used for a long time, the contact interface may be separated. 
     SUMMARY 
     The present disclosure is designed to solve the problems of the related art, and therefore the present disclosure is directed to providing a battery module which may improve the cooling efficiency of a battery cell, and a battery pack and a vehicle comprising the same. 
     Also, the present disclosure is also directed to providing a battery module which may cool a battery cell without providing a cooling pin between battery cells, and a battery pack and a vehicle comprising the same. 
     In addition, the present disclosure is also directed to providing a battery module which may protect a battery cell against an external impact, and a battery pack and a vehicle comprising the same. 
     The present disclosure is not limited thereto, and other objects not mentioned herein may be clearly understood by those skilled in the art from the following description. 
     The present disclosure provides a battery module having a plurality of battery cells. 
     According to an embodiment of the present disclosure, the battery module may comprise: a plurality of battery cells arranged side by side to face each other in at least one direction; a cooling plate located below the plurality of battery cells; and a heat transfer tape adhered to the battery cells to transfer heat of the battery cells to the cooling plate. 
     In an embodiment, the heat transfer tape may include: an adhesion portion having one surface and the other surface which are in surface contact with different battery cells, to adhere the battery cells; and a buffering portion located between an edge portion of the battery cell and the cooling plate. 
     In an embodiment, the buffering portion may have a buffering space formed therein. 
     In an embodiment, the cooling plate may be made of aluminum, and the heat transfer tape may be made of graphite. 
     In an embodiment, the buffering portion may include: a first inclined surface which is in contact with an edge portion of any one battery cell among the battery cells; a second inclined surface which is in contact with an edge portion of another battery cell adjacent to the any one battery cell, and having one end connected to the first inclined surface; and a horizontal surface which is in contact with the cooling plate, and having one end respectively connected to the first inclined surface and the second inclined surface, wherein the first inclined surface, the second inclined surface and the horizontal surface may be combined to form the buffering space therein. 
     In an embodiment, the cooling plate may include: a plurality of protrusions on which the first inclined surface and the second inclined surface are located, the plurality of protrusions being in contact with the horizontal surface and protruding in a direction perpendicular to an arrangement direction of the plurality of battery cells; and a plurality of accommodation portions located respectively between the neighboring protrusions to accommodate the edge portion of the battery cell. 
     In an embodiment, the protrusions may be shaped to incline upwards from both edges to a center thereof, and the adhesion portion may be provided above the protrusions. 
     In an embodiment, the buffering portion may have an adhesion surface on a surface which is in contact with the edge portion of the battery cell and the cooling plate. 
     In an embodiment, a surface of the buffering portion, which faces the buffering space, may be a non-adhesion surface. 
     In an embodiment, a surface of the buffering portion, which faces the buffering space, may have an adhesive force weaker than an adhesive force of the adhesion surface of the adhesion portion. 
     In an embodiment, the battery module may further comprise a heat sink in which a cooling fluid flows, the heat sink exchanging heat with the cooling plate. 
     In an embodiment, an area of the adhesion portion in contact with the surface of the battery cell may be smaller than an area of the battery cell. 
     The present disclosure may provide a battery pack, comprising the battery module described above. 
     The present disclosure may provide a vehicle, comprising the battery pack described above. 
     According to an embodiment of the present disclosure, the adhesion and cooling efficiency of the battery cells may be improved by attaching the battery cells by using a heat transfer tape with good thermal conductivity. 
     Also, according to an embodiment of the present disclosure, since a buffering portion is provided between the edge portion of the battery cell and the cooling plate, it is possible to protect the battery cell from an external impact. 
     In addition, according to an embodiment of the present disclosure, since a buffering portion is provided between the edge portion of the battery cell and the cooling plate, it is possible to protect the battery cell when the battery cell swells therein. 
     Also, according to an embodiment of the present disclosure, the weight of the battery module may be minimized by applying a heat transfer tape to the battery module. In addition, according to an embodiment of the present disclosure, the battery module may be manufactured in a simple way by using the heat transfer tape, and the battery cells may be fixed to each other in a better way. 
     Also, according to an embodiment of the present disclosure, since a heat transfer tape capable of adhering the battery cells of the battery module and simultaneously protecting the battery cells from an external impact is provided, it is possible to reduce a material cost of the battery module and also simplify a manufacturing process of the battery module. 
     The effects of the present disclosure are not limited to the above, and effects not mentioned herein may be clearly understood by those skilled in the art from the specification and the accompanying drawings. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view showing a battery module according to an embodiment of the present disclosure. 
         FIG. 2  is an exploded perspective view showing the battery cell of  FIG. 1 . 
         FIG. 3  is a perspective view showing the battery cell of  FIG. 1  in an assembled state. 
         FIG. 4  is a perspective view showing a part of the battery module of  FIG. 1 . 
         FIG. 5  is a perspective view showing a front portion of the battery module of  FIG. 1 . 
         FIG. 6  is a front view showing the battery module of  FIG. 1 . 
         FIG. 7  is an enlarged perspective view showing a region A of  FIG. 5 . 
         FIG. 8  is an enlarged view showing a region B of  FIG. 6 . 
         FIG. 9  is an enlarged view showing a region C of  FIG. 5 . 
         FIG. 10  is a perspective view schematically showing that the battery cells of  FIG. 1  are coupled to a heat transfer tape. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The embodiments of the present disclosure may be modified in various ways, and the scope of the present disclosure should not be construed as being limited to the embodiments described below. The embodiments are provided to more fully illustrate the present disclosure to those skilled in the art. Thus, the shapes of the components in the figures may be exaggerated to emphasize a clearer description. In addition, terms and words used in the specification and the claims should not be construed as being limited to ordinary or dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present disclosure on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. 
       FIG. 1  is a perspective view showing a battery module according to an embodiment of the present disclosure. Here, referring to  FIG. 1 , a battery module  10  has a plurality of battery cells  100 . The battery cell  100  may be provided as a secondary battery. For example, the battery cell  100  may be provided as a pouch-type secondary battery. Hereinafter, the battery cell  100  of the present disclosure will be described as a pouch-type secondary battery as an example. 
     The battery module  10  includes a battery cell  100 , a heat transfer tape  200 , a cooling plate  300 , and a heat sink  400 . 
     A plurality of battery cells  100  may be provided. The plurality of battery cells  100  are arranged side by side so that their respective faces face each other. Hereinafter, a direction in which the plurality of battery cells  100  are arranged side by side is referred to as a first direction  12 . When being observed from the above, a direction perpendicular to the first direction  12  is referred to as a second direction  14 . A direction perpendicular to both the first direction  12  and the second direction  14  is referred to as a third direction  16 . 
       FIG. 2  is an exploded perspective view showing the battery cell of  FIG. 1 , and  FIG. 3  is a perspective view showing the battery cell of  FIG. 1  in an assembled state. Here, referring to  FIGS. 2 and 3 , the battery cell  100  includes a pouch case  110 , an electrode assembly  120 , an electrode tab  130  and an electrode lead  140 . 
     The pouch case  110  has an inner space  101 . Inside the pouch case  110 , an electrode assembly  120  and an electrolyte, explained later, are positioned. A central region of the pouch case  110  is provided to protrude upward and downward. The pouch case  110  includes an upper case  111  and a lower case  112 . 
     The upper case  111  and the lower case  112  are combined with each other to form the inner space  101 . A central region of the upper case  111  has a concave shape protruding upward. The lower case  112  is located under the upper case  111 . A central region of the lower case  112  has a concave shape protruding downward. Alternatively, the inner space  101  of the pouch case  110  may be formed in only any one of the upper case  111  and the lower case  112 . 
     The upper case  111  and the lower case  112  respectively have a sealing portion  160 . The sealing portion  160  of the upper case  111  and the sealing portion  160  of the lower case  112  may be provided to face each other. The sealing portion  160  of the upper case  111  and the sealing portion  160  of the lower case  112  may be bonded to each other by thermal bonding or the like. The inner space  101  may be sealed by bonding the sealing portions  160 . 
     An electrolyte and an electrode assembly  120  are accommodated in the inner space  101  of the pouch case  110 . The pouch case  110  may have an outer insulating layer, a metal layer, and an inner adhesive layer. The outer insulating layer may prevent exterior moisture, gas or the like from penetrating therein. The metal layer may improve the mechanical strength of the pouch case  110 . The metal layer may be made of aluminum. Alternatively, the metal layer may be made of any one selected from an alloy of iron, carbon, chromium and manganese, an alloy of iron and nickel, aluminum or equivalents thereof. When the metal layer uses a material containing iron, mechanical strength may be enhanced. When the metal layer is made of aluminum, good ductility may be ensured. Aluminum is a desired material of the metal layer. The outer insulating layer and the inner adhesive layer may be made of a polymer material. 
     The electrode assembly  120  includes a positive electrode plate, a negative electrode plate, and a separator. The electrode assembly  120  may be configured so that at least one positive electrode plate and at least one negative electrode plate are disposed with a separator being interposed therebetween. The electrode assembly  120  may be configured so that a plurality of positive electrode plates and a plurality of negative electrode plates are alternately stacked. Alternatively, the electrode assembly  120  may also be configured so that one positive electrode plate and one negative electrode plate are wound. 
     The electrode plate of the electrode assembly  120  includes a current collector and active material slurry coated on one or both sides of the current collector. The active material slurry may be formed by stirring a solvent in a state where a granular active material, an auxiliary conductor, a binder, and a plasticizer are added thereto. Each electrode plate may have an uncoated portion corresponding to a region where the active material slurry is not coated. In the uncoated portion, an electrode tab  130  corresponding to each electrode plate may be formed. 
     The electrode tab  130  is extended to protrude from the electrode assembly  120 . The electrode tab  130  includes a positive electrode tab  131  and a negative electrode tab  132 . The positive electrode tab  131  may extend from the uncoated portion of the positive electrode plate, and the negative electrode tab  132  may extend from the uncoated portion of the negative electrode plate. 
     One positive electrode tab  131  and one negative electrode tab  132  may be provided in the battery cell  100 , respectively. Alternatively, a plurality of positive electrode tabs  131  and a plurality of negative electrode tabs  132  may also be provided. For example, if one positive electrode plate and one negative electrode plate are included in the electrode assembly  120  of the battery cell  100 , one positive electrode tab  131  and one negative electrode tab  132  may be included. Alternatively, a plurality of positive electrode tabs  131  and a plurality of negative electrode tabs  132  may be included, respectively. If a plurality of positive electrode plates and a plurality of negative electrode plates are included in the electrode assembly  120 , a plurality of positive electrode tabs  131  and a plurality of negative electrode tabs  132  may be included, and one electrode tab  130  may be provided to one electrode plate. 
     The electrode lead  140  may electrically connect the battery cell  100  to other external devices. The electrode lead  140  may include a positive electrode lead  141  and a negative electrode lead  142 . The electrode lead  140  may be provided to extend from the inside to the outside of the pouch case  110 . A portion of the electrode lead  140  may be interposed between the sealing portions  160 . The electrode lead  140  is connected to the electrode tab  130 . The electrode lead  140  of the present disclosure may include the positive electrode lead  141  at one side of the pouch case  110  and include the negative electrode lead  142  at the other side of the pouch case  110 . Alternatively, both the positive electrode lead  141  and the negative electrode lead  142  may be provided at one side of the pouch case  110 . 
     The battery cell  100  has an accommodation portion  150 , a sealing portion  160  and an edge portion  170 . Here, the accommodation portion  150  is a portion where the electrode assembly  120  is accommodated in the battery cell  100 . The sealing portion  160  is sealing portions at four sides of the pouch case  110  surrounding the accommodation portion  150 . The edge portion  170  is defined as a part, or an edge, of the accommodation portion  150  which is adjacent to the sealing portion  160  and adjacent to the cooling plate  300 , explained later. 
       FIG. 4  is a perspective view showing a part of the battery module of  FIG. 1 ,  FIG. 5  is a perspective view showing a front portion of the battery module of  FIG. 1 , and  FIG. 6  is a front view showing the battery module of  FIG. 1 . Here, referring to  FIGS. 1 and 4 to 6 , the heat transfer tape  200  is in contact with the battery cell  100  and transfers the heat of the battery cell  100  to the cooling plate  300 , explained later. The heat transfer tape  200  may adhere the battery cells  100  to each other. The heat transfer tape  200  may adhere the cooling plate  300  and the battery cell  100 . The heat transfer tape  200  may be provided in plural. The plurality of heat transfer tapes  200  may adhere a plurality of battery cells  100  to each other, or the battery cell  100  and the cooling plate  300  to each other. 
     The heat transfer tape  200  may be made of a material with good thermal conductivity. As an example, the heat transfer tape  200  may include a graphite sheet material. The heat transfer tape  200  may include a material with good adhesion. 
     The heat transfer tape  200  includes an adhesion portion  210  and a buffering portion  230 . 
     The adhesion portion  210  may adhere adjacent battery cells  100 . One side and the other side of the adhesion portion  210  may be in surface contact with different battery cells  100 , respectively. The adhesion portion  210  is located between two adjacent battery cells  100 . For example, the adhesion portion  210  and the battery cells  100  may be arranged in the order of the battery cell  100 , the adhesion portion  210 , the battery cell  100 , the adhesion portion  210  and the battery cell  100  in the first direction  12 . A surface of the adhesion portion  210  in contact with the battery cell  100  may be an adhesion surface. Both surfaces of the adhesion portion  210  may be the adhesion surface so that one adhesion surface is adhered to one battery cell  100 . The adhesion portion  210  is provided to adhere two adjacent battery cells  100  so that the battery cells  100  may be stacked in the first direction  12 . The battery cells  100  may be coupled easily by means of the adhesion portions  210  of the heat transfer tape  200  between the battery cells  100 . 
     The area of the adhesion portion  210  in contact with the surface of the battery cell  100  may be smaller than the area of the battery cell  100 . For example, the area of the adhesion portion  210  in contact with the surface of the battery cell  100  may be half the area of the battery cell  100 . Alternatively, the area of the adhesion portion  210  may be provided in a size corresponding to the area of the battery cell  100 . The area of the adhesion portion  210  in contact with the surface of the battery cell  100  may be selected differently depending on the manufacturing process of the battery module  10 , the area of the battery cell  100 , and the material characteristics of the battery cell  100 . 
       FIG. 7  is an enlarged perspective view showing a region A of  FIG. 5 ,  FIG. 8  is an enlarged view showing a region B of  FIG. 6 , and  FIG. 9  is an enlarged view showing a region C of  FIG. 5 . Here, referring to  FIGS. 7 to 9 , the buffering portion  230  may be positioned below the adhesion portion  210  in the third direction  16 . The buffering portion  230  may adhere the battery cell  100  to the cooling plate  300 . The buffering portion  230  may be connected to the adhesion portion  210 . The buffering portion  230  may be positioned between the edge portion  170  of the battery cell  100  and the cooling plate  300 . The buffering portion  230  may have an adhesion surface on surfaces which are in contact with the edge portion  170  of the battery cell  100  and the cooling plate  300 , respectively. The buffering portion  230  has a buffering space  250  therein. The buffering portion  230  includes a first inclined surface  231 , a second inclined surface  233 , and a horizontal surface  235 . 
     The first inclined surface  231  is connected to the adhesion portion  210 . One surface of the first inclined surface  231  is in surface contact with the edge portion  170  of the battery cell  100 . The surface of the first inclined surface  231  in contact with the battery cell  100  may be provided as an adhesion surface. 
     The second inclined surface  233  is connected to the adhesion portion  210 . The second inclined surface  233  may be connected to the first inclined surface  231 . One surface of the second inclined surface  233  is in surface contact with the edge portion  170  of the battery cell  100 . The battery cell  100  in contact with the first inclined surface  231  and the battery cell  100  in contact with the second inclined surface  233  may be different cells. The surface of the second inclined surface  233  in contact with the battery cell  100  may be provided as an adhesion surface. 
     The horizontal surface  235  is in contact with the cooling plate  300 . The first inclined surface  231  and the second inclined surface  233  are located above the horizontal surface  235  in the third direction  16 . The horizontal surface  235  may be coupled to the first inclined surface  231  and the second inclined surface  233 . A central portion of the horizontal surface  235  may have a curved shape. The surface of the horizontal surface  235  in contact with the cooling plate  300  may be provided as an adhesion surface. 
     The first inclined surface  231 , the second inclined surface  233 , and the horizontal surface  235  are combined with each other to form a buffering space  250  therein. A section of the buffering space  250  may have an approximately hanger shape. Two battery cells  100  are located above the buffering space  250 . When an external impact is transmitted to the buffering space  250 , the buffering space  250  may prevent the battery cell  100  from colliding with the cooling plate  300  and thus prevent the edge portion  170  of the battery cell  100  from being damaged. In addition, the buffering space  250  may also prevent the battery cell  100  from partially swelling inside the battery cell  100  and thus contacting and damaging other parts. 
     The surface of the buffering portion  230 , which faces the buffering space  250 , may be provided as a non-adhesion surface. Alternatively, the surface of the buffering portion  230 , which faces the buffering space  250 , may be provided as a surface having an adhesive force. In this case, the surface of the buffering space  230 , which faces the buffering space  250 , may have a weaker adhesive force than the adhesive force of the adhesion surface of the adhesion portion  210 . Alternatively, the surface of the buffering portion  230 , which faces the buffering space  250 , may have a weaker adhesive force than the adhesive force of the adhesion surface of the first inclined surface  231 , the second inclined surface  233 , or the horizontal surface  235 . Since the surface of the buffering portion  230 , which faces the buffering space  250 , has a weaker adhesive force, it is possible to absorb external impacts. 
     The cooling plate  300  discharges the heat transferred from the battery cell  100  to the outside. The cooling plate  300  is located below the battery cell  100  in the third direction  16 . The cooling plate  300  may be made of a material with good thermal conductivity. For example, the cooling plate  300  may be made of a metal material. For example, the cooling plate  300  may be made of aluminum. Alternatively, the cooling plate  300  may be made of other metal materials with good thermal conductivity. 
     The plurality of battery cells  100  are located at the top of the cooling plate  300 . The cooling plate  300  is in contact with the plurality of battery cells  100 . The cooling plate  300  has a protrusion  310  and an accommodation portion  330 . 
     A plurality of protrusions  310  and accommodation portions  330  are provided. The protrusions  310  and the accommodation portions  330  are alternately located along the first direction  12 . 
     The protrusions  310  may protrude in the third direction  16  perpendicular to the direction in which the plurality of the battery cells  100  are arranged. The protrusions  310  may be shaped to elongate in the second direction  14 . The protrusions  310  may be shaped to incline upwards from both edges toward a center thereof. A cross section of the protrusions  310  may have a pentagonal shape. The adhesion portion  210  is located above the center of the protrusion  310  in the first direction  12 . The horizontal surface  235  may be coupled to the upper surface of the protrusion  310 . The protrusion  310 , the horizontal surface  235 , the first inclined surface  231  and the second inclined surface  233  may be positioned in order along the third direction  16 . 
     The accommodation portion  330  is located between adjacent protrusions  310 . A plurality of accommodation portions  330  may be provided. The plurality of accommodation portions  330  may be positioned along the first direction  12 . The accommodation portion  330  may be shaped to be concave downwards in the third direction  16 . The accommodation portion  330  may be shaped to elongate along the second direction  14 . The seating portion  160  of the battery cell  100  may be located in the accommodation portion  330 . Each of the plurality of accommodation portions  330  may accommodate the battery cell  100 . 
     The heat sink  400  may exchange heat with the cooling plate  300 . The heat sink  400  is located below the cooling plate  300  in the third direction  16 . 
     The heat sink  400  has a chamber  410 . The chamber  410  may have a cross-sectional area identical to or greater than that of the cooling plate  300 . The chamber  410  may have a flow path (not shown) formed therein. A cooling fluid may flow through the flow path. As an example, the cooling fluid may be cooling water. Alternatively, the cooling fluid may be air. The chamber  410  may have an inlet pipe (not shown) through which the cooling fluid flows in and an outlet pipe (not shown) through which the cooling fluid flows out. 
     The battery pack according to the present disclosure may include at least one battery module  10  described above. In addition to the battery module  10 , the battery pack may further include a case for accommodating the battery module  10 , and various devices for controlling charge/discharge of the battery module  10 . For example, a battery management system (BMS), a current sensor, a fuse, and the like may be further included. 
     The battery module  10  according to the present disclosure may be applied to vehicles such as electric vehicles and hybrid vehicles. The vehicle according to the present disclosure may include at least one battery pack including the battery module  10  according to the embodiment in the present disclosure. 
     Hereinafter, a manufacturing process of the battery module  10  according to the present disclosure will be described briefly.  FIG. 10  is a perspective view schematically showing that the battery cells of  FIG. 1  are coupled to a heat transfer tape. 
     Referring to  FIG. 10 , when the battery cells  100  are coupled to the cooling plate  300 , the heat transfer tape  200  is attached to one surface of one battery cell  100  and coupled to the cooling plate  300 . Then, another battery cell  100  is adhered to one surface of the battery cell  100  which is coupled to the cooling plate  300 . At this time, the heat transfer tape  200  is not attached to the surface of the battery cell  100 , attached later, which is adhered to the battery cell  100 , attached former. The heat transfer tape  200  is attached in advance to the surface of the battery cell  100 , attached later, which is opposite to the surface attached to the battery cell  100 , attached former. When the battery module  100  is manufactured, the battery cells  100  and the cooling plate  300  may be easily coupled by repeating the above process by using the heat transfer tape  200  attached in advance. In other words, the manufacturing process of the battery module  10  may be simplified by providing the heat transfer tape  200 . As described above, the battery cells  100  may be fixed to the surface of the heat transfer tape  200  by means of the adhesive property, which may simplify the manufacturing process and shorten the manufacturing process time. 
     Hereinafter, a cooling process of the battery cell  100  in the battery module  10  according the present disclosure will be described. 
     The heat generated from the battery cells  100  is directly transferred to the cooling plate  300 , or transferred to the edge portion  170  of the battery cells  100 , the heat transfer tape  200 , and the cooling plate  300 . When the heat generated from the battery cells  100  is directly transferred to the cooling plate  300 , a portion of the battery cells  100 , namely an outer end of the sealing portion  160 , is in direct contact with the accommodation portion  330  of the cooling plate  300 . 
     Different from the above, the heat may be transferred to the cooling plate  300  through the heat transfer tape  200 . In this case, the heat is transferred to the cooling plate  300  through the adhesion portion  210  located between the battery cells  100 , or the heat may be transferred to the cooling plate  300  through the buffering portion  230  which is in contact with the edge portion  170  of the battery cells  100 . The heat transfer tape  200  is made of a material with high thermal conductivity as described above, and thus transfers the heat of the battery cells  100  to the cooling plate  300 . The heat transferred to the cooling plate  300  exchanges heat with the heat sink  400 . 
     The heat of the battery cells  100  may be cooled by transferring the heat of the battery cells  100  to the outside according to two paths as described above. In the present invention, the heat transfer tape  200  is made of a material with good thermal conductivity, and thus the heat of the battery cells  100  may be effectively transferred to the outside, thereby improving the cooling efficiency for the battery cells  100 . 
     As described above, according to an embodiment of the present disclosure, the cooling efficiency for the battery cells  100  may be improved by means of the heat transfer tape  200 . In addition, the battery cells  100  may be protected from external impacts by means of the buffering portion  230  of the heat transfer tape  200 . Moreover, the manufacturing process of the battery module  10  may be simplified by means of the heat transfer tape  200 , thereby improving the manufacturing process efficiency. 
     The above description is illustrative of the present disclosure. Also, the above disclosure is intended to illustrate and explain the preferred embodiments of the present disclosure, and the present disclosure may be used in various other combinations, modifications, and environments. In other words, the present disclosure may be changed or modified within the scope of the concept of the invention disclosed herein, within the equivalent scope of the disclosure, and/or within the skill and knowledge of the art. The described embodiments illustrate the best state of the art to implement the technical idea of the present disclosure, and various changes may be made thereto as being demanded for specific applications and uses of the present disclosure. Accordingly, the above description is not intended to limit the present disclosure to the embodiments. Also, the appended claims should be construed as encompassing such other embodiments.