Title of Invention: Battery module and manufacturing method thereof
technical field
[One]
Cross-Citation with Related Application(s)
[2]
This application claims the benefit of priority based on Korean Patent Application No. 10-2020-0044876 dated April 13, 2020, and all contents disclosed in the literature of the Korean patent application are incorporated as a part of this specification.
[3]
The present invention relates to a battery module and a manufacturing method thereof, and more particularly, to a battery module having a cooling structure and a manufacturing method thereof.
background
[4]
Secondary batteries are receiving a lot of attention as an energy source in various product groups such as mobile devices and electric vehicles. Such a secondary battery is a powerful energy resource that can replace the use of conventional products using fossil fuels, and is in the spotlight as an eco-friendly energy source because no by-products are generated according to energy use.
[5]
Recently, as the need for a large-capacity secondary battery structure, including the use of secondary batteries as an energy storage source, increases, the demand for a battery pack having a multi-module structure in which a plurality of secondary batteries are assembled in series/parallel connected battery pack is increasing. .
[6]
On the other hand, when configuring a battery pack by connecting a plurality of battery cells in series/parallel, a battery module composed of battery cells is configured, and other components are added using at least one battery module to configure the battery pack. How to do it is common
[7]
The battery module includes a battery cell stack in which a plurality of battery cells are stacked, a module frame accommodating the battery cell stack, and a heat sink for cooling the plurality of battery cells.
[8]
1 is a view showing a battery module combined with a conventional heat sink.
[9]
Referring to FIG. 1 , a conventional battery module includes a battery cell stack in which a plurality of battery cells 10 are stacked, a module frame accommodating the battery cell stack, a bottom portion 20 of the module frame and the battery cell stack. and a thermally conductive resin layer 15 positioned between the sieves. Such a battery module may be formed under the module frame bottom 20 and combined with a heat sink 30 that provides a cooling function to the plurality of battery cells 10 to form a battery pack. At this time, the heat sink 30 includes an inlet through which the refrigerant flows, an outlet through which the refrigerant flows, a lower plate 31 having a cooling flow path connecting the inlet and the outlet, and an upper plate 29 covering the lower plate 31 . includes Here, a heat-conducting layer 18 may be further formed between the bottom 20 of the battery module and the heat sink 30 .
[10]
Conventionally, in order to improve the cooling performance of the battery module and/or the battery pack, a separate cooling structure, for example, the heat sink 30, is required in the battery pack unit. Accordingly, the cooling structure tends to be complicated, and the refrigerant and the battery cell stack 10 are formed in a multi-layered structure including the upper plate 29 and the module frame bottom 29, thereby indirectly cooling the battery cells. There were limits to what could be done.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[11]
SUMMARY OF THE INVENTION An object of the present invention is to provide a battery module having improved assembly properties of a cooling structure for improving cooling performance, and a method for manufacturing the same.
[12]
The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.
means of solving the problem
[13]
A battery module according to an embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked, a module frame accommodating the battery cell stack, an end plate covering the front and rear surfaces of the battery cell stack, a heat sink formed on the bottom of the module frame, and a cooling port for supplying refrigerant to the heat sink, wherein the module frame includes a module frame protrusion formed so that the bottom of the module frame passes through the end plate And, the cooling port is disposed in a shape protruding upward from the upper surface of the module frame protrusion.
[14]
The cooling port may be coupled to the module frame protrusion by a fastening member.
[15]
The battery module may further include a bracket positioned between the cooling port and an upper surface of the module frame protrusion, and the cooling port may be connected to the bracket and the module frame protrusion by a fastening member.
[16]
The battery module may further include a gasket formed between the cooling port and the bracket.
[17]
A first coupling hole is formed on both sides of the lower end of the cooling port, a second coupling hole is formed on both sides of the bracket, and a third coupling hole is formed on both sides of the module frame protrusion, and the coupling member is the first coupling member. It may be inserted through the coupling hole, the second coupling hole, and the third coupling hole to couple the cooling port and the bracket.
[18]
A refrigerant pipe may be formed in the center of the cooling port, and the refrigerant pipe may be connected to a heat sink connector formed in the protrusion of the module frame.
[19]
A bracket connector is formed at the center of the bracket, and the bracket connector is formed between the coolant pipe and the heat sink connector to connect the coolant pipe and the heat sink connector.
[20]
The gasket may be formed in an annular shape, and may be positioned between the coolant pipe and the bracket connector to seal between the coolant pipe and the bracket connector.
[21]
It may further include the heat sink protrusion formed to correspond to the module frame protrusion.
[22]
A battery pack according to another embodiment of the present invention includes the battery module.
[23]
A method of manufacturing a battery module according to another embodiment of the present invention comprises: coupling an end plate to the front and rear ends of the module frame in which the battery cell stack is accommodated; and coupling a cooling port on the module frame protrusion formed so that the bottom of the module frame extends past the end plate, wherein the step of coupling the end plate to the module frame includes: After moving the end plate, the end plate is coupled to the module frame, and after the end plate is coupled to the module frame, the cooling port is moved along a second direction intersecting the first direction and then the module Connect to the frame protrusion.
[24]
The method of manufacturing the battery module may further include coupling the cooling port and the bracket positioned at the lower end of the cooling port to the module frame protrusion by a fastening member.
[25]
The coupling of the cooling port and the bracket with the module frame protrusion by means of a fastening member includes a first coupling hole formed on both sides of a lower end of the cooling port, a second coupling hole formed on both sides of the bracket, and the module frame projecting portion. matching the third coupling holes formed on both sides; and inserting a bolt through the first coupling hole, the second coupling hole, and the third coupling hole.
[26]
The coupling of the bracket and the cooling port by the fastening member may further include inserting a gasket between the cooling port and the bracket.
[27]
In the step of coupling the end plate to the module frame, the first direction may be a direction perpendicular to a surface formed by corners of the module frame coupled to the end plate.
[28]
In the step of coupling the end plate to the module frame, the second direction may be a direction perpendicular to the upper surface of the module frame protrusion.
Effects of the Invention
[29]
According to embodiments of the present invention, since there is no assembly interference between the cooling port and the end plate, the assembly process of the end plate may be simplified and the assembly difficulty may be improved.
[30]
Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.
Brief description of the drawing
[31]
1 is a view showing a battery module combined with a conventional heat sink.
[32]
2 is a view showing a battery module shown as a comparative example.
[33]
3 is a view showing interference due to a cooling port when assembling the end plate formed in FIG. 2 .
[34]
4 is a view showing a state in which the end plate of FIG. 3 is assembled avoiding the cooling port.
[35]
5 is an exploded perspective view of a battery module according to an embodiment of the present invention.
[36]
6 is an exploded perspective view of a cooling port coupled with a battery module according to an embodiment of the present invention.
[37]
7 is a side view showing a state in which the cooling port according to an embodiment of the present invention is coupled to the battery module.
[38]
8 is a view showing a state in which the end plate according to an embodiment of the present invention is assembled.
[39]
9 is a view showing a state in which the cooling port according to an embodiment of the present invention is assembled.
[40]
FIG. 10 is a view of the cooling port of FIG. 9 as viewed from the side;
Modes for carrying out the invention
[41]
It should be understood that the embodiments described below are illustratively shown to aid understanding of the invention, and the present invention may be implemented with various modifications different from the embodiments described herein. However, in the description of the present invention, if it is determined that a detailed description of a related known function or component may unnecessarily obscure the gist of the present invention, the detailed description and detailed illustration thereof will be omitted. In addition, the accompanying drawings are not drawn to scale in order to help understanding of the invention, but dimensions of some components may be exaggerated.
[42]
The first and second terms used in the present application may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.
[43]
In addition, the terms used in the present application are only used to describe specific embodiments, and are not intended to limit the scope of rights. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this application, terms such as "comprises", "consists of" or "consisting It should be understood that it does not preclude the possibility of addition or existence of further other features or numbers, steps, operations, components, parts, or combinations thereof.
[44]
Hereinafter, a battery module coupled with a cooling port according to an embodiment of the present invention will be described with reference to FIGS. 5 to 7 .
[45]
5 is an exploded perspective view of a battery module according to an embodiment of the present invention. 6 is an exploded perspective view of a cooling port coupled with a battery module according to an embodiment of the present invention. 7 is a side view showing a state in which the cooling port according to an embodiment of the present invention is coupled to the battery module.
[46]
5 to 7 , the battery module according to an embodiment of the present invention includes a battery cell stack 100 in which a plurality of battery cells are stacked, and a module frame for accommodating the battery cell stack 100 ( 200), the end plate 400 covering the front and rear surfaces of the battery cell stack 100, the heat sink 300 formed on the bottom of the module frame 200, and a cooling port for supplying refrigerant to the heat sink 300 (500).
[47]
Referring to FIG. 6 , in the battery module according to the present embodiment, the heat sink 300 and the bottom of the module frame 200 are integrally formed, and the cooling port 500 may be connected to one end of the heat sink 300 . The module frame 200 includes a module frame protrusion 211 extending past the end plate 400 on the bottom of the module frame 200 , and the cooling port 500 is connected to the upper surface of the module frame protrusion. and supplies the refrigerant to the heat sink 300 through the module frame protrusion 211 .
[48]
In this case, a bracket 520 may be positioned between the cooling port 500 and the module frame protrusion 211 . The cooling port 500 may be connected to the bracket 520 by a fastening member. At this time, the gasket 530 may be positioned between the cooling port 500 and the bracket 520 . As a modification, the bracket 520 may be omitted, and the cooling port 500 may be directly connected to the protrusion 211 to be described later by a fastening member.
[49]
The battery cell according to this embodiment is a secondary battery, and may be configured as a pouch-type secondary battery. The battery cells may be configured in plurality, and the plurality of battery cells may be stacked to each other so as to be electrically connected to each other to form the battery cell stack 100 . Each of the plurality of battery cells may include an electrode assembly, a cell case, and an electrode lead protruding from the electrode assembly.
[50]
The module frame 200 accommodates the battery cell stack 100 . According to an embodiment of the present invention, the module frame 200 includes a lower frame 210 that covers the lower surface and both sides of the battery cell stack 100 , and an upper plate that covers the upper surface of the battery cell stack 100 ( 220) may be included. It includes a module frame protrusion 211 extending over the end plate on the bottom of the module frame 200 . The cooling port 500 described above may be seated above the module frame protrusion 211 .
[51]
However, the structure of the module frame 200 is not limited thereto, and may be in the form of a mono frame surrounding on four sides except for the front and rear surfaces of the battery cell stack 100 .
[52]
The battery module according to this embodiment may further include an end plate 400 covering the front and rear surfaces of the battery cell stack 100 . It is possible to physically protect the battery cell stack 100 accommodated therein through the module frame 200 described above.
[53]
Referring to FIG. 5 , the heat sink 300 may be formed under the module frame 200 . The heat sink 300 is formed on one side of the lower plate 310 and the heat sink 300 to form a skeleton of the heat sink 300 and contact the bottom of the module frame 200 to form the heat sink 300 from the outside. ) The inlet 320 for supplying the refrigerant to the inside, the outlet 330 formed on one side of the heat sink to allow the refrigerant flowing inside the heat sink to flow out of the heat sink, and the inlet 320 and the outlet 330 are connected and a flow path part 340 through which the refrigerant flows.
[54]
Specifically, the flow path 340 may refer to a structure in which the lower plate 310 in contact with the lower surface of the lower frame 210 corresponding to the bottom of the module frame 200 is depressed downward. The upper side of the flow path part 340 is opened to form a flow path between the flow path part 340 and the bottom of the module frame 205 , and a refrigerant may flow through the flow path. In other words, the battery module according to the present embodiment may have a cooling integrated structure in which the bottom of the module frame 200 serves to correspond to the upper plate of the heat sink 300 .
[55]
Conventionally, a structure in which a refrigerant flows is separately formed on the lower side of the module frame, so that the module frame cannot but be indirectly cooled, so cooling efficiency is lowered and a separate refrigerant flow structure is formed on the battery module and the battery pack equipped with the battery module. There was a problem that the space utilization rate was lowered. However, according to an embodiment of the present invention, by adopting a structure in which the heat sink 300 is integrated in the lower part of the module frame 200 , the refrigerant flows directly between the flow path part 340 and the bottom part of the module frame 200 . As a result, the cooling efficiency due to direct cooling increases, and the space utilization rate on the battery module and the battery pack on which the battery module is mounted is further improved through the structure in which the heat sink 300 is integrated with the bottom of the module frame 200 . can do it
[56]
The lower plate 310 may be formed to correspond to the bottom of the module frame 200 . The bottom portion of the module frame 200 corresponds to the bottom portion of the lower frame 210 , and the bottom portion of the lower plate 310 and the lower frame 210 may be coupled by welding, and the battery module through the lower plate 310 . The overall rigidity can be reinforced. Since the bottom of the lower plate 310 and the lower frame 210 are sealed through welding, the refrigerant may flow through the flow path 340 formed inside the lower plate 310 without leakage.
[57]
Both the inlet 320 and the outlet 330 may be formed on one side of the heat sink 300 . In more detail, both the inlet 320 and the outlet 330 may be formed on one side of the heat sink 300 formed in the portion where the end plate 400 is located. The inlet 320 and the outlet 330 may be respectively located at both ends of one side of the heat sink 300 . The inlet 320 and the outlet 330 may be formed at positions corresponding to the module frame protrusion 211 so as to be connected to the lower surface of the module frame protrusion 211 . To this end, the inlet 320 and the outlet 330 may be formed on the heat sink protrusion 300P protruding from one side of the heat sink 300 to the portion where the module frame protrusion 211 is located.
[58]
The flow path 340 may be formed to cover the bottom of the module frame 200 while being bent. The flow path part 340 is formed in most areas except for the part where the lower plate 310 is in contact with the bottom part of the module frame 200 among the bottom parts of the module frame 200 , so that the upper part of the bottom part of the module frame 200 is formed. All parts of the battery cell stack 100 arranged to occupy most of the area of ​​the bottom of the module frame 200 may be uniformly cooled.
[59]
A portion where the flow passage 340 is bent may be formed as a curved surface. Accordingly, a portion where the partition wall 350 is bent may also be formed as a curved surface. When an angled corner portion is formed in the flow path portion 340 , the flow of the refrigerant is stagnated at the angled corner portion, and there is a risk that the temperature deviation and pressure drop may increase. In this regard, if the bent portion is treated as a curved surface as in an embodiment of the present invention, the flow of the refrigerant may be made naturally.
[60]
The cooling port 500 is connected to the upper surface of the module frame protrusion 211 and supplies refrigerant to the heat sink 300 through the module frame protrusion 211 . More specifically, as shown in FIG. 6 , a heat sink connector 211a is formed on the module frame protrusion 211 , and the heat sink connector 211a is formed on the lower surface of the module frame protrusion 211 . Connected to the inlet 320 and the outlet 330 connected to the heat sink 300 , the refrigerant supplied through the cooling port 500 passes through the heat sink connector 211a and into the heat sink through the inlet 320 . may be introduced, and the refrigerant flowing out from the inside of the heat sink 300 through the outlet 330 may pass through the heat sink connector 211a and may be discharged to the cooling port 500 through the outlet 330 .
[61]
Referring back to FIG. 6 , a refrigerant pipe 511 may be formed in the center of the cooling port 500 . The refrigerant may flow in and out through the heat sink connector 211a, the inlet 320 and the outlet 330 through the refrigerant pipe 511 . A first coupling hole 512 may be formed below both ends of the cooling port 500 . The cooling port 500 and the bracket 520 may be coupled to each other through the first coupling hole 512 .
[62]
The cooling port 500 may be coupled to the bracket 520 located on the lower side. The bracket 520 is positioned between the cooling port 500 and the module frame protrusion 211, and functions as a connecting member so that the cooling port 500 can be bound on the module frame protrusion 211, but the bracket 520 In this case, the cooling port 500 may be directly coupled to the module frame protrusion 211 . The bracket 520 may include a bracket connector 521 formed in the center and second coupling holes 522 formed on both sides of the bracket connector 521 .
[63]
The bracket connector 521 may be positioned between the coolant pipe 511 and the heat sink connector 211a to connect the coolant pipe 511 and the heat sink connector 211a. Accordingly, the refrigerant that has passed through the refrigerant pipe 511 may flow through the bracket connector 521 and the heat sink connector 211a in order to be introduced into the inlet 320 , and the refrigerant flowing out through the outlet 330 may pass through the heat sink connector 211a. (211a), the bracket connector 521, and the refrigerant pipe 511 may be discharged to the outside passing in turn.
[64]
The second coupling hole 522 may be formed on both sides of the bracket connector 521 . The third coupling hole 211b may be formed on both sides of the upper surface of the module frame protrusion 211 . The second coupling hole 522 and the third coupling hole 211b are formed at positions corresponding to the first coupling holes 512 formed on both sides of the lower end of the cooling port 500, and the bolt 540 is the first coupling hole. 512 , the second coupling hole 522 and the third coupling hole 211b may be inserted through the cooling port 500 , the bracket 520 , and the module frame protrusion 211 to be firmly coupled.
[65]
The gasket 530 is formed in an annular shape and may be positioned between the cooling port 500 and the bracket 520 . More specifically, the gasket 530 is positioned between the refrigerant pipe 511 and the zebracket connector 521 to seal between the refrigerant pipe 511 and the bracket connector 521 so that the refrigerant is cooled in the cooling port body part 510 . It is possible to prevent leakage between and the bracket (520). In addition, the gasket 530 may be formed of a rubber material to obtain flexibility of the cooling port body 510 connected to the gasket 530 .
[66]
Hereinafter, with reference to FIGS. 5 to 7 and 8 to 10 , in comparison with the comparative example shown in FIGS. 2 to 4 for the assembly method of the battery module coupled with the cooling port according to an embodiment of the present invention Explain.
[67]
2 is a view showing a battery module shown as a comparative example. 3 is a view showing interference due to a cooling port when assembling the end plate formed in FIG. 2 . 4 is a view showing a state in which the end plate of FIG. 3 is assembled avoiding the cooling port. 8 is a view showing a state in which the end plate according to an embodiment of the present invention is assembled. 9 is a view showing a state in which the cooling port according to an embodiment of the present invention is assembled. FIG. 10 is a view of the cooling port of FIG. 9 as viewed from the side;
[68]
2 to 4, the battery module according to the comparative example of the present invention, the module frame 40 for accommodating the battery cell stack, the end plate 50 for covering the front and rear surfaces of the battery cell stack, the module It may include a module frame protrusion 60 protruding from the bottom of the frame 40 , and a cooling port 70 formed on an upper surface of the module frame protrusion 60 .
[69]
The conventional cooling port 70 is coupled to the module frame protrusion 60 when the module frame 40 is manufactured, and the end plate 50 is assembled in a state in which the module frame assembly is formed. At this time, as shown in FIG. 3 , when assembling the end plate 50 in a direction perpendicular to the attachment surface of the end plate, interference may occur during assembly due to the cooling port 70 protruding upward from the module frame protrusion 60 . can Therefore, in order to assemble the end plate 50, the module frame protrusion 60 in a state in which the end plate 50 is vertically erected toward the space between the cooling port 70 and the module frame 40 as shown in FIG. ) can be assembled by moving it in the downward direction, and then moving the end plate 50 in a direction perpendicular to the attachment surface of the end plate again.
[70]
As shown in FIG. 4 , since the end plate 50 has to be assembled in two steps, the assembly process is complicated, and high transport precision is required to combine the end plate 50 with the corner portion of the module frame 40 . there was a problem with
[71]
Accordingly, in the method of manufacturing a battery module according to an embodiment of the present invention, the step of coupling the end plate 400 to the front and rear ends of the module frame 200 in which the battery cell stack is accommodated (FIG. 8), the module frame protrusion 211 Steps of coupling the cooling port on the (FIG. 9, FIG. 10) are sequentially performed. That is, the end plate 400 is first coupled to the module frame 200, and then the cooling port 500 is coupled to the module frame protrusion 211 to simplify the assembly process of the end plate 400 and improve the assembly difficulty. can
[72]
In the step of coupling the end plate 400 to the front and rear ends of the module frame 200, the end plate 400 is moved along the first direction, which is the assembly direction shown in FIG. 8, and then the end plate 400 is moved to the module frame. After coupling with 200 and coupling the end plate 400 to the module frame 200, after moving the cooling port along the second direction, which is the assembly direction shown in FIG. 10 intersecting the first direction, the module frame It is connected to the protrusion 211 .
[73]
In this case, the first direction may be a direction perpendicular to the surface formed by the corners of the module frame 200 coupled to the end plate 400 . The end plate 400 may be welded to the corners of the module frame 200 . The second direction may be a direction perpendicular to the upper surface of the module frame protrusion 211 .
[74]
The step of coupling the cooling port 500 and the bracket 520 with the module frame protrusion 211 by means of a fastening member includes the first coupling holes 512 formed on both lower ends of the cooling port 500 and the bracket 520 . Matching the second coupling hole 522 formed on both sides and the third coupling hole 211b formed on both sides of the module frame protrusion 211 and the first coupling hole 512, the second coupling hole 522 and It may include inserting the bolt 540 to penetrate the third coupling hole (211b).
[75]
In the step of matching the first coupling hole 512 with the second coupling hole 522 formed on both sides of the bracket 520 , the step of matching the refrigerant pipe 511 with the bracket connector 521 may be further included. .
[76]
The step of coupling the cooling port 500 to the bracket 520 may further include inserting the gasket 530 between the cooling port 500 and the bracket 520 . The cooling port 500 and the bracket 520 may be connected through the assembly process disclosed in these steps.
[77]
In the step of connecting the cooling port 500 to the module frame protrusion 211 , the cooling port 500 may move downward and be connected to the upper surface of the module frame protrusion 211 . At this time, the cooling port 500 and the module frame protrusion 211 can be coupled so that the bracket connector 521 formed on the cooling port 500 matches the heat sink connector 211a formed on the upper surface of the module frame protrusion 211 . have.
[78]
The battery module described above may be included in the battery pack. The battery pack may have a structure in which one or more battery modules according to the present embodiment are collected and a battery management system (BMS) that manages the temperature, voltage, etc. of the battery and a cooling device are added and packed.
[79]
The battery pack may be applied to various devices. These devices can be applied to transportation means such as electric bicycles, electric vehicles, hybrid vehicles, etc., but the present invention is not limited thereto and can be applied to various devices that can use a battery module, which also falls within the scope of the present invention. .
[80]
In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications are possible by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.
[81]
Explanation of symbols
[82]
200: module frame
[83]
210: lower frame
[84]
211: module frame protrusion
[85]
211a: heat sink connector
[86]
220: upper plate
[87]
300: heat sink
[88]
400: end plate
[89]
500: cooling port
[90]
510: cooling port body portion
[91]
511: refrigerant pipe
[92]
512: first coupling hole
[93]
520: bracket
[94]
521: bracket connector
[95]
522: second coupling hole
[96]
530: gasket
[97]
540: volt
Claims
[Claim 1]
A battery cell stack in which a plurality of battery cells are stacked, a module frame accommodating the battery cell stack, an end plate covering front and rear surfaces of the battery cell stack, a heat sink formed at the bottom of the module frame, and a cooling port for supplying a refrigerant to the heat sink, wherein the module frame includes a module frame protrusion formed so that a bottom portion of the module frame extends past the end plate, and the cooling port includes an upper surface of the module frame protrusion A battery module disposed in a shape protruding upward from the part.
[Claim 2]
The battery module of claim 1, wherein the cooling port is coupled to the module frame protrusion by a fastening member.
[Claim 3]
The battery module of claim 1, further comprising a bracket positioned between the cooling port and the upper surface of the module frame protrusion.
[Claim 4]
The battery module of claim 3, further comprising a gasket formed between the cooling port and the bracket.
[Claim 5]
5. The method of claim 4, wherein first coupling holes are formed on both sides of the lower end of the cooling port, second coupling holes are formed on both sides of the bracket, and third coupling holes are formed on both sides of the module frame protrusion, the fastening A member is inserted through the first coupling hole, the second coupling hole, and the third coupling hole to couple the cooling port and the bracket.
[Claim 6]
The battery module of claim 4 , wherein a refrigerant pipe is formed at the center of the cooling port, and the refrigerant pipe is connected to a heat sink connector formed in the module frame protrusion.
[Claim 7]
The battery module of claim 6 , wherein a bracket connector is formed at the center of the bracket, and the bracket connector is formed between the coolant pipe and the heat sink connector to connect the coolant pipe and the heat sink connector.
[Claim 8]
The battery module of claim 7 , wherein the gasket is formed in an annular shape, and is positioned between the coolant pipe and the bracket connector to seal between the coolant pipe and the bracket connector.
[Claim 9]
The battery module of claim 1, further comprising the heat sink protrusion formed to correspond to the module frame protrusion.
[Claim 10]
coupling the end plate to the front and rear ends of the module frame in which the battery cell stack is accommodated; and coupling a cooling port on the module frame protrusion formed so that the bottom of the module frame extends past the end plate, wherein the step of coupling the end plate to the module frame includes: After moving the end plate, the end plate is coupled to the module frame, and after the end plate is coupled to the module frame, the cooling port is moved along a second direction intersecting the first direction and then the module A method of manufacturing a battery module connected to the frame protrusion.
[Claim 11]
The method of claim 10, further comprising coupling the cooling port and the bracket positioned at the lower end of the cooling port to the module frame protrusion by a fastening member.
[Claim 12]
The method of claim 11, wherein the coupling of the cooling port and the bracket to the module frame protrusion by means of a fastening member comprises: a first coupling hole formed on both sides of a lower end of the cooling port, a second coupling hole formed on both sides of the bracket; matching the third coupling holes formed on both sides of the module frame protrusion; and inserting a bolt through the first coupling hole, the second coupling hole, and the third coupling hole.
[Claim 13]
The method of claim 11 , wherein the coupling of the bracket and the cooling port with the module frame protrusion by the fastening member further comprises inserting a gasket between the cooling port and the bracket.
[Claim 14]
The method of claim 10, wherein in the step of coupling the end plate to the module frame, the first direction is a direction perpendicular to a surface formed by corners of the module frame coupled to the end plate.
[Claim 15]
The method of claim 10 , wherein the second direction is a direction perpendicular to an upper surface of the module frame protrusion.
[Claim 16]
A battery pack comprising the battery module according to claim 1 .