WO2014077578A1

WO2014077578A1 - Battery module cooling device and battery module assembly comprising same

Info

Publication number: WO2014077578A1
Application number: PCT/KR2013/010287
Authority: WO
Inventors: 권오성; 임동훈
Original assignee: 에스케이이노베이션 주식회사
Priority date: 2012-11-13
Filing date: 2013-11-13
Publication date: 2014-05-22
Also published as: KR101983391B1; KR20140062603A

Abstract

A battery module cooling device according to one embodiment of the present invention comprises: a cooling plate coupled to one surface of a unit battery module, in which at least one battery cell is stacked, so as to be in a contact state therewith; a cooling pipe which includes a coupling groove formed along an external rim part of one surface of the cooling plate, is coupled with the coupling groove so as to be provided thereto, and has a hollow inner part in which a refrigerant flows; an upper cover member which is coupled with one surface of the cooling plate so as to cover the cooling pipe; and a lower cover member which corresponds to the upper cover member and is coupled with another surface of the cooling plate. According to the present invention, the heat generated by the battery module can be more effectively cooled.

Description

Battery module cooling device and battery module assembly including the same

[Cross References of Related Applications]

This application claims priority to Korean Patent Application No. 10-2012-0128240, filed November 13, 2012, the contents of which are incorporated by reference in their entirety for reference.

The present invention relates to a battery module cooling apparatus and a battery module assembly including the same.

In general, secondary batteries are batteries that can be repeatedly used through a reverse charging and discharging process that converts chemical energy into electrical energy. Examples thereof include nickel-cadmium (Ni-Cd) batteries and nickel-hydrogen (Ni-MH) batteries. Batteries, lithium-metal batteries, lithium-ion (Ni-Ion) batteries, and lithium-ion polymer batteries (Li-Ion Polymer Battery, hereinafter referred to as "LIPB").

The secondary battery is composed of a positive electrode, a negative electrode, an electrolyte, and a separator, and stores and generates electricity by using voltage differences between different positive and negative electrode materials. Here, discharge means to move electrons from a high voltage cathode to a low anode (generates electricity by the voltage difference between the anodes), and charge moves electrons from the anode to the cathode again. The anode material receives electrons and lithium ions. To return to the original metal oxide. That is, when the secondary battery is charged, the charging current flows as the metal atoms move from the positive electrode to the negative electrode through the separator, and when discharged, the metal atoms move from the negative electrode to the positive electrode and the discharge current flows.

Recently, secondary batteries have attracted attention as energy sources that are widely used in IT products, automobile fields, and energy storage fields. In the IT product field, secondary batteries can be used continuously for a long time, miniaturization and weight reduction are required, and the automotive field demands high power, durability, and stability to solve the explosion risk. Energy storage is to store the surplus power produced by wind, solar power, etc., can be applied to a secondary battery of a more relaxed condition as used as a fixed type. In particular, research and development of lithium secondary batteries has been in progress since the early 1970s, and since 1990, lithium ion batteries using carbon as a negative electrode instead of lithium metal have been developed, and have been used for more than 500 cycles and short charging times of 1 to 2 hours. It is characterized by the highest sales elongation among secondary batteries and a light weight of about 30 to 40% as compared to nickel-hydrogen batteries. In addition, the lithium secondary battery has the highest unit cell voltage (3.0 to 3.7V) and excellent energy density among the existing secondary batteries, and may have characteristics optimized for mobile devices.

The lithium secondary battery is generally classified into a liquid electrolyte battery and a polymer electrolyte battery according to the type of electrolyte. A battery using a liquid electrolyte is called a lithium ion battery, and a battery using a polymer electrolyte is called a lithium polymer battery. In addition, the exterior material of the lithium secondary battery may be formed in various kinds, and typical types of exterior materials include cylindrical, prismatic, and pouches. In the exterior of the lithium secondary battery, an electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator (separator) interposed therebetween is stacked or wound is provided.

Conventionally, various cooling systems have been applied for cooling heat generated from battery modules including battery cells of such secondary batteries. In particular, there has been an air-cooling method in which battery cells are stacked at intervals at the time of lamination and cooled by forming an air flow path using the intervals. However, such an air cooling method includes a battery cell as it is difficult to effectively cool and discharge heat generated from the battery cell due to a narrow air flow path and a problem of decreasing cooling efficiency and limitation of cooling through the gap of stacked battery cells. There was a serious problem that the operating performance of the various devices are being degraded, or the reliability of device operation is significantly reduced.

The present invention was created to solve the problems of the prior art as described above, at least one unit battery module is inserted and installed between the unit battery module of the stacked battery module, it is possible to cool the heat generated from the battery module The present invention provides a battery module cooling apparatus and a battery module assembly including the same.

In the battery module cooling apparatus according to an embodiment of the present invention, at least one or more cooling plates are coupled to be in contact with one surface of a unit battery module in which battery cells are stacked, and a coupling groove is formed along an outer edge of the cooling plate. It is formed and coupled to be seated in the coupling groove, the cooling pipe which can flow the refrigerant in a hollow form inside, and corresponds to the upper cover member and the upper cover member coupled to cover the cooling pipe on one surface of the cooling plate. It may include a lower cover member coupled to the other surface of the cooling plate.

As a battery module cooling apparatus according to an embodiment of the present invention, the inlet and the outlet for the access of the refrigerant of the cooling pipe may be formed side by side on the same side of the cooling plate.

In the battery module cooling apparatus according to an embodiment of the present invention, the coupling groove formed in the cooling plate may be formed as a groove having a depth of 1/3 to 2/3 of the diameter of the cooling pipe.

As a battery module cooling apparatus according to an embodiment of the present invention, the unit battery module is formed by stacking two battery cells, the partition member may be coupled between the battery cells.

As a battery module cooling apparatus according to an embodiment of the present invention, the cooling plate may be formed of a thermally conductive material so that heat generated from the unit battery module can be transferred.

As a battery module cooling apparatus according to an embodiment of the present invention, a pad member for preventing deformation of the battery cell coupled to the peripheral portion of the partition member may be further formed.

As a battery module cooling apparatus according to an embodiment of the present invention, inlet and outlet portions of the cooling pipe may be formed with a refrigerant inlet control unit and a refrigerant discharge control unit, respectively, in order to control the amount of refrigerant flowing in the cooling pipe. have.

A battery module assembly according to an embodiment of the present invention includes a battery module in which a plurality of unit battery modules including at least one battery cell are stacked and a cooling device inserted into and coupled between the battery modules so as to contact one surface of the unit battery module. The cooling device includes a cooling plate which is in surface contact with the unit cell module, a coupling groove is formed along an outer edge of one surface of the cooling plate, and is coupled to be seated in the coupling groove, and the refrigerant is hollow inside. It may include a cooling pipe that can flow, an upper cover member coupled to cover the cooling pipe on one surface of the cooling plate, and a lower cover member corresponding to the upper cover member and coupled to the other surface of the cooling plate.

As a battery module assembly according to an embodiment of the present invention, the inlet and the outlet for the access of the refrigerant of the cooling pipe may be formed side by side on the same side of the cooling plate.

As a battery module assembly according to an embodiment of the present invention, the coupling groove formed in the cooling plate may be formed as a groove having a depth of 1/3 to 2/3 of the diameter of the cooling pipe.

As a battery module assembly according to an embodiment of the present invention, the unit battery module is formed by stacking two battery cells, the partition member may be coupled between the battery cells.

As a battery module assembly according to an embodiment of the present invention, the cooling plate may be formed of a thermally conductive material so that heat generated from the unit battery module may be transferred to the cooling pipe outside the cooling plate.

As a battery module assembly according to an embodiment of the present invention, a pad member for preventing deformation of the battery cell coupled to the peripheral portion of the partition member may be further formed.

As a battery module assembly according to an embodiment of the present invention, a refrigerant inlet control unit and a refrigerant discharge control unit may be formed in the inlet and the outlet of the cooling pipe to control the amount of refrigerant flowing in the cooling pipe. .

A battery module assembly according to an embodiment of the present invention, further comprising an upper case coupled to one surface of the battery module and an upper cover to include the battery module and the cooling device, and a lower case coupled to the other surface of the battery module. It may include.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

According to the present invention, there is an effect that can more effectively cool the heat generated by the battery module.

In addition, a cooling device is inserted between the unit battery modules constituting the battery module, and the cooling plate of the cooling device is formed in surface contact with the unit battery module to transfer heat to the outer portion, and inside the cooling pipe formed at the outer side of the cooling plate. By cooling the heat transferred using the flowing refrigerant there is an effect that can further improve the cooling efficiency and reliability.

In addition, the cooling plate is formed to be in surface contact with the unit cell module, the cooling pipe is coupled to the separate member on the cooling plate, there is an effect that can ensure the stable storage and flow reliability of the refrigerant flowing in the cooling pipe.

In addition, the coupling groove for coupling the cooling pipe is formed on the cooling plate, thereby improving the precision of the coupling between the cooling pipe and the cooling plate, thereby ensuring the operation reliability of the cooling device by the cooling pipe.

In addition, the cooling pipe coupled to the cooling plate is formed on the inlet and outlet in the same direction on any one side of the cooling plate, the refrigerant control unit is coupled to each inlet and outlet, heat and cooling generated in the battery module Maintaining an appropriate temperature of the battery module according to the speed, there is an effect that can further improve the operating performance and reliability of the battery module assembly.

1 is an exploded perspective view of a cooling plate assembly of a battery module cooling apparatus according to an embodiment of the present invention;

2 is a perspective view of the combination of the battery module cooling device and the refrigerant control unit according to an embodiment of the present invention;

3 is an exploded perspective view of a battery module cooling apparatus according to an embodiment of the present invention;

4 is an exploded perspective view of a battery module assembly according to an embodiment of the present invention; And

5 is a perspective view of a combination of the battery module assembly according to an embodiment of the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings. In the present specification, in adding reference numerals to the components of each drawing, it should be noted that the same components as possible, even if displayed on different drawings have the same number as possible. In addition, "one side", "other side", "one side", and "other side". Terms such as "first" and "second" are used to distinguish one component from another component, and the component is not limited by the terms. In the following description, detailed descriptions of related well-known techniques that may unnecessarily obscure the subject matter of the present invention will be omitted.

The battery cells 21 constituting the battery module 30 of the battery module assembly 1 according to the present invention may use a lithium secondary battery or a nickel-hydrogen secondary battery as a secondary battery capable of charging and discharging. It is apparent that the secondary battery capable of charging and discharging can be selectively applied to various types of secondary batteries by those skilled in the art. For example, a nickel-hydrogen secondary battery is a secondary battery that uses nickel as a positive electrode, a hydrogen storage alloy as a negative electrode, and an alkaline aqueous solution as an electrolyte, and has a large capacity per unit volume. Therefore, an energy source such as an electric vehicle (EV) or a hybrid vehicle (HEV) It may be suitable for use as. In addition, in the lithium _secondary battery, a porous polymer separator is disposed between a cathode and an anode using a metal oxide such as LiCoO ₂ and a cathode active material as a cathode active material, and a lithium salt such as LiPF _{6 is used} . It can be prepared by adding an aqueous electrolyte solution. During charging, lithium ions of the positive electrode active material are released and inserted into the carbon layer of the negative electrode, and during discharging, lithium ions of the carbon layer are released and inserted into the positive electrode active material, and lithium ions are moved between the negative electrode and the positive electrode. Serves as a medium. Lithium secondary batteries have high energy density, high operating voltage, and excellent storage characteristics, so that they can be applied to various electronic materials as well as energy sources of electric vehicles (EVs) and hybrid vehicles (HEVs).

In addition, the lithium secondary battery may be formed as a pouch type battery or a square battery including an electrode assembly and a pouch case surrounding and sealing the electrode assembly. In particular, the pouch type case may be used by insulating the surface of a metallic thin plate such as an aluminum thin plate, and the insulating treatment is applied by modifying polypropylene made of a polymer resin, for example, CPP (Casted Polypropylene) as a heat seal layer. On the outer surface thereof, a resin material such as nylon or polyethylene terephthalate (PET) may be formed. This structure is described as an embodiment of a lithium secondary battery, and in the present invention, such a structure can be selected and applied by appropriate changes by those skilled in the art according to the form and type of the battery.

At least one battery cell 21 is stacked to form a unit battery module 20, in order to achieve a compactness of the battery module 30 is formed by stacking the unit battery module 20 and a thin and wide width and It may be formed of a secondary battery having a length. For example, the electrode assembly may be embedded in a case of the laminate sheet including the resin layer and the metal layer, and may have a structure in which the first tab portion 22 and the second tab portion 23 protruding from the electrode terminal protrude. In particular, the electrode assembly may be formed in a pouch-type case of an aluminum laminate sheet.

Herein, the electrode assembly is formed to include an anode, a cathode, and a separator, and a separator is formed between the anode and the cathode. Depending on the method of bonding the positive electrode, the negative electrode, and the separator, it may be formed in a winding type of a jelly-roll, or a stack type / stack folding type or the like. Hereinafter, detailed description will be omitted herein because it corresponds to the known art.

The unit battery module 20 may be formed of a unit battery module 20 of a minimum unit to which at least one battery cell 21 is electrically connected. At least two electrode terminals may be interconnected in series, and may be formed in a structure in which the connection parts of the electrode terminals are bent and stacked, and a cell cover formed of a rigid material such as aluminum surrounding the outer surface of the battery cell 21 (not shown in the drawings) May further include).

As shown in FIG. 4, a partition member 24 may be included between two battery cells 21 stacked thereon. The partition member 24 fixes the battery cell 21 and serves to protect the battery cell 21 from external shocks, vibrations and foreign substances. In general, the continuous laminated structure may have a "wh" form. An additional non-slip pad (not shown) for preventing the slip of the battery cell 21 may be further formed here. The pad member 25 may be further included on the partition member 24. Here, the pad member 25 may be attached to the battery cell 21 to act as a buffer of the battery cell 21 in a deformation or stacked structure.

However, the number of battery cells 21 included in the unit battery module 20 is not limited thereto, and the partition member 24 or the pad member 25 is necessary between the stacked surfaces of the battery cells 21. Since it is not a configuration, it can be omitted, and it is apparent that a separate member for the coupling position or other coupling reliability of the other battery cells 21 may be included. Each battery cell 21 has a first tab portion 22 and a second tab portion 23 for electrical connection protruding from one side thereof are formed in opposite directions on one side and the other side of the battery cell 21. Although not shown in the drawing, the first tab portion 22 and the second tab portion 23 for the electrical connection of the electrode may take a structure arranged side by side on one side of the battery cell 21, the type of the battery cell 21 And a variety of structures may be selected and applied according to the method of configuring the battery module 30.

The battery module 30 is formed by stacking at least one unit battery module 20, and there is no particular limitation on the number of stacking or stacking methods of the unit battery modules 20 forming the battery module 30. The stacked view of the battery module 30 of the drawing shown in the present invention is only one embodiment of the battery module 30. In particular, in the present invention, the battery module cooling apparatus 10 may be inserted and stacked between the unit battery modules 20 for cooling the battery module 30.

Hereinafter, the battery module cooling apparatus 10 and the battery module assembly 1 including the same will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a cooling plate assembly of a battery module cooling apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of a battery module cooling apparatus and a refrigerant control unit according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view of a battery module assembly according to an embodiment of the present invention, FIG. 4 is an exploded perspective view of a battery module assembly according to an embodiment of the present invention, and FIG. 5 is a perspective view of a combination of another battery module assembly according to an embodiment of the present invention. to be.

Battery module cooling apparatus 10 according to an embodiment of the present invention, at least one cooling plate 11 is coupled to be in contact with one surface of the unit battery module 20 is formed by stacking the battery cells 21, A coupling groove 11a is formed along an outer edge of one surface of the cooling plate 11, and coupled to be seated in the coupling groove 11a, and a cooling pipe 12 in which a refrigerant flows in a hollow shape, An upper cover member 13 coupled to cover the cooling pipe 12 on one surface of the cooling plate 11 and a lower cover member corresponding to the upper cover member 13 and coupled to the other surface of the cooling plate 11 ( 14).

The cooling plate 11 constituting the battery module cooling device 10 is directly contacted with the battery cell 21 to transfer heat generated from the battery cell 21 to be formed at an outer edge of the cooling plate 11 to be described later. The coolant may be cooled by the flowing cooling pipe 12. The cooling plate 11 may be manufactured in a plate shape, as shown in FIG. 1, and may be stacked together in the stacking direction of the unit battery module 20 to be in surface contact with the battery cell 21. As described above, the unit battery module 20 may include two battery cells 21, and the number of battery cells 21 included in the unit battery module 20 is not limited thereto. Of course. However, in consideration of the cooling efficiency and the stacking thickness of the entire battery module 30, it may be appropriate that the battery cells 21 are included in the unit battery module 20 and stacked in two units as one unit. The cooling plate 11 is a member for heat transfer, and is preferably formed of a material having thermal conductivity. It may be formed of a metal material or a plastic material with thermal conductivity, and is not particularly limited to the material, it will be possible to select, apply a variety of conventionally known materials.

The cooling pipe 12 may be coupled to form a closed circuit at the outer portion of the cooling plate 11. It may be formed in a closed loop structure while forming one inlet and an outlet. As shown in FIG. 1, the cooling pipe 12 may be coupled to be seated in a coupling groove 11a formed along an edge of an outer portion of the cooling plate 11. By coupling the cooling pipe 12 to the coupling groove 11a formed on the cooling plate 11, the coupling and fixing of the cooling pipe 12 and the cooling plate 11 can be stably maintained. Since the cooling plate 11 is coupled to the center portion and the battery cell 21 so as to be in surface contact with each other, the cooling pipe 12 is preferably formed at the outermost portion of the cooling plate 11. That is, when the cooling pipe 12 is coupled to the cooling plate 11, the coupling is broken, or if the cooling pipe 12 is slipped and its position is not fixed on the cooling plate 11, the battery module 30 A problem of low cooling reliability of a) may occur. Therefore, the cooling pipe 12 is stably coupled by forming the coupling groove 11a in the portion where the cooling pipe 12 is to be seated on the cooling plate 11. Here, the coupling groove 11a may be formed to a depth of 1/3 to 2/3 of the diameter of the cooling pipe 12. When the coupling groove 11a formed on the cooling plate 11 is formed to a depth of 1/3 to 2/3 of the diameter of the cooling pipe 12, the cooling pipe 11 maintains the rigidity of the cooling plate 11 and at the same time. ) Can enhance the bonding force with the cooling plate (11). However, this is a range of the forming depth of the coupling groove (11a) according to an embodiment of the present invention, of course, various embodiments can be applied. Here, the cooling pipe 12 may be coupled to the coupling groove 11a by using braze welding. In addition, the cooling pipe 12 may be coupled using various methods.

The cooling pipe 12 has a hollow pipe shape to allow the refrigerant to flow therein. A conventionally known material may be applied as the refrigerant, and in one embodiment of the present invention, water may be used as the refrigerant to use a cooling method of a water cooling method. Therefore, there is an advantage that the cooling device 10 can be driven using the coolant in the device to which the battery module 30 assembly is applied, without additional refrigerant injection.

As shown in FIG. 3, the upper cover member 13 is a member coupled to the top of the assembly in which the cooling pipe 12 is coupled to one surface of the cooling plate 11. The upper cover member 13 may be coupled to the cooling plate 11 to form a groove (not shown) in a corresponding position to cover the exposed cooling pipe 12. Accordingly, the upper cover member 13 may be formed to face the outer shape of the cooling pipe 12. The upper cover member 13 accommodates and covers the cooling pipe 12 and functions to fix and protect the cooling pipe 12.

The lower cover member 14 may be coupled to the other surface of the cooling plate 11 so as to correspond to the upper cover member 13. The upper cover member 13 and the lower cover member 14 may be combined to form the battery module cooling device 10.

Refrigerant control unit 40 may be coupled to the inlet and outlet of the cooling pipe 12, respectively. In particular, as shown in FIG. 2, when at least one cooling device 10 is formed between the stacked surfaces of the unit cell module 20, the refrigerant inlet control unit includes the entire inlet of the cooling pipe 12. The 41 is coupled, and the coolant discharge control unit 42 may be coupled to the cooling pipe 12 outlet as well. By controlling the cooling rate and the degree of cooling of the battery module 30 through the refrigerant control unit 40 in the control unit (not shown) it can be controlled to properly cool the battery module 30. In particular, the adjustment of the inflow or discharge of the refrigerant by the refrigerant control unit 40 can adjust the amount of refrigerant introduced and discharged by adjusting the cross-sectional area of the passage of the refrigerant control unit 40 in which the refrigerant flows, the refrigerant control unit 40 ) Can be further provided with a Baffle (adjusting device; not shown) for adjusting the refrigerant flow rate and the like. As described above through the refrigerant control unit 40, it is possible to appropriately control the selection of the appropriate cooling time and the degree of cooling according to the temperature rise of the battery module assembly (1).

The battery module assembly 1 including the cooling device 10 according to an embodiment of the present invention includes a battery module 30 in which a plurality of unit battery modules 20 including at least one battery cell 21 are stacked. ); And a cooling device 10 inserted and coupled between the battery modules 30 to be in contact with one surface of the unit battery module 20, wherein the cooling device 10 is in surface contact with the unit battery module 20. The cooling plate 11 is formed, the coupling groove 11a is formed along the outer edge of one surface of the cooling plate 11, is coupled to be seated in the coupling groove 11a, the inside of the refrigerant can flow in the hollow form The cooling pipe 12, the upper cover member 13 and the upper cover member 13 are coupled to cover the cooling pipe 12 on one surface of the cooling plate 11 and the other surface of the cooling plate 11. It may include a lower cover member 14 coupled to.

Each component and the cooling device 10 of the battery module assembly 1 according to the present embodiment are overlapped with the corresponding components of the battery module cooling device 10 described above and the detailed description thereof will be omitted. However, in the present embodiment, with reference to FIG. 5, the overall configuration of the battery module assembly 1 will be described.

As shown in FIG. 5, the battery module assembly 1 is formed by alternately stacking the battery module cooling device 10 and the unit battery module 20. The side cover 60 is coupled to the front surface of the battery module assembly 1 shown in FIG. 5 together with the coolant control unit 40 to cover the front surface between the coolant inlet control unit 41 and the coolant discharge control unit 42. Can be. Another side cover 70 may be coupled to the rear of the battery module assembly 1 such that a PCB (Printed Circuit Board) assembly (not shown) coupled to the battery module 30 is mounted and received therein.

In addition, the upper case 51 is coupled to protect the battery cell 21 of the unit battery module 20 exposed on the upper surface of the battery module assembly 1, the battery module assembly corresponding to the upper case 51 ( 1) The lower case 52 may be coupled to the lower portion. The upper case 51 and the lower case 52 prevent an operation error or failure of the battery module assembly 1 which may occur from the protection of the battery module assembly 1 device and the inflow of foreign substances. The material of the upper case 51 and the lower case 52 is not particularly limited, but various members such as aluminum or other plastic materials may be selected and applied.

Although the present invention has been described in detail through specific embodiments, this is to specifically describe the present invention, the battery module cooling apparatus and the battery module assembly including the same according to the present invention are not limited thereto, and the technical spirit of the present invention. It will be apparent that modifications and improvements are possible by those skilled in the art.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

[Description of the code]

1: battery module assembly

10: battery module cooling device

11: cooling plate

11a: coupling groove

12: cooling pipe

13: upper cover member

14: lower cover member

20: unit battery module

21: battery cell

22: first tab portion

23: second tab portion

24: partition member

25: pad

30: battery module

40: refrigerant control unit

41: refrigerant flow control unit

42: refrigerant discharge control unit

51: upper case

52: lower case

60: side cover

70: side cover

Claims

At least one cooling plate coupled to be in contact with one surface of a unit battery module in which battery cells are stacked;

A coupling groove is formed along an outer edge of one surface of the cooling plate, coupled to be seated in the coupling groove, and a cooling pipe in which a refrigerant flows in a hollow shape;

An upper cover member coupled to one surface of the cooling plate to cover the cooling pipe;

And a lower cover member corresponding to the upper cover member and coupled to the other surface of the cooling plate.
The method according to claim 1,

The battery module cooling apparatus of the cooling pipe is formed in parallel with the inlet and the outlet for the entry and exit of the cooling plate on the same side of the cooling plate.
The method according to claim 1,

The coupling groove formed in the cooling plate is a battery module cooling device is formed of a groove of a depth of 1/3 to 2/3 of the diameter of the cooling pipe.
The method according to claim 1,

The unit battery module is formed by stacking two battery cells, the battery module cooling device coupled to the partition member between the battery cells.
The method according to claim 1,

The cooling plate is a battery module cooling device is formed of a thermally conductive material so that the heat generated from the unit battery module can be transferred.
The method according to claim 4,

Battery module cooling apparatus further comprises a pad member for preventing deformation of the battery cell is coupled to the peripheral portion of the partition member.
The method according to claim 2,

And a refrigerant inlet control unit and a refrigerant discharge control unit, respectively, in the inlet and the outlet of the cooling pipe in order to control the amount of refrigerant flowing in the cooling pipe.
A battery module in which a plurality of unit battery modules including at least one battery cell are stacked; And

And a cooling device inserted into and coupled between the battery modules so as to contact one surface of the unit battery module.

The cooling device,

A cooling plate in surface contact with the unit battery module;

A coupling groove is formed along an outer edge of one surface of the cooling plate, coupled to be seated in the coupling groove, and a cooling pipe in which a refrigerant flows in a hollow shape;

An upper cover member coupled to one surface of the cooling plate to cover the cooling pipe;

And a lower cover member corresponding to the upper cover member and coupled to the other surface of the cooling plate.
The method according to claim 8,

Battery module assembly formed in parallel with the inlet and outlet for the inlet and outlet of the cooling pipe of the cooling pipe on the same side of the cooling plate.
The method according to claim 8,

The coupling groove formed in the cooling plate is formed of a battery module assembly of the groove depth of 1/3 to 2/3 of the diameter of the cooling pipe.
The method according to claim 8,

The unit battery module is formed by stacking two battery cells, a battery module assembly coupled between the battery cells.
The method according to claim 8,

The cooling plate is a battery module assembly formed of a thermally conductive material so that the heat generated from the unit battery module can be transferred to the cooling pipe outside the cooling plate.
The method according to claim 11,

Battery module assembly further comprises a pad member for preventing deformation of the battery cell is coupled to the peripheral portion of the partition member.
The method according to claim 9,

And a refrigerant inlet control unit and a refrigerant discharge control unit, respectively, in the inlet and the outlet of the cooling pipe to control the amount of refrigerant flowing in the cooling pipe.
The method according to claim 8,

To include the battery module and the cooling device

An upper case coupled to one surface of the battery module;

And a lower case corresponding to the upper cover and coupled to the other surface of the battery module.