The present invention relates to a battery module including a cooling member, a battery pack including the battery module, and an electronic device, and more particularly, to a battery module having improved manufacturing efficiency, cooling efficiency, and durability.
[2]
This application is an application claiming priority to Korean Patent Application No. 10-2020-0061863 filed on May 22, 2020, and all contents disclosed in the specification and drawings of the application are incorporated into this application by reference.
background art
[3]
In recent years, as the demand for portable electronic products such as laptop computers, video cameras, and mobile phones has rapidly increased, and development of electric vehicles, energy storage batteries, robots, and satellites has been in full swing, high-performance secondary batteries that can be repeatedly charged and discharged Research on this is actively progressing.
[4]
Currently commercially available secondary batteries include nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and lithium secondary batteries. It is in the limelight because of its very low self-discharge rate and high energy density.
[5]
These lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. In addition, such a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with a positive electrode active material and a negative electrode active material are disposed with a separator interposed therebetween, and an exterior material for sealing and housing the electrode assembly together with an electrolyte, that is, a battery case. .
[6]
And, depending on the shape of the exterior material, the lithium secondary battery can be classified into a can-type secondary battery in which the electrode assembly is embedded in a metal can and a pouch-type secondary battery in which the electrode assembly is embedded in a pouch of an aluminum laminate sheet.
[7]
Among them, in the case of a can-type secondary battery, a metal can in which an electrode assembly is embedded may be manufactured in a cylindrical shape. Such a can-type secondary battery may be used to construct a battery module having a module case accommodating a plurality of secondary batteries and a bus bar configured to electrically connect the plurality of secondary batteries.
[8]
In addition, the prior art battery module has a heat sink to dissipate heat generated from a module case containing a plurality of secondary batteries to the outside. In particular, in the prior art, it is common for a cooling plate for heat conduction to be interposed between the module case and the heat sink.
[9]
However, the cooling plate interposed between the module case and the heat sink may lengthen the heat transfer path and decrease heat conduction efficiency. Furthermore, when the cooling plate is welded to each of the module case and the heat sink, thermal deformation of the members is likely to occur, and the manufacturing process efficiency is reduced due to the inconvenience of welding a plurality of members to each other.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[10]
Accordingly, the present invention has been devised to solve the above problems, and an object of the present invention is to provide a battery module with improved manufacturing efficiency, cooling efficiency, and durability.
[11]
Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the

We claims.
means of solving the problem
[12]
The battery module according to the present invention for achieving the above object,
[13]
a plurality of secondary batteries; and
[14]
Including; a cooling member configured to mount the plurality of secondary batteries,
[15]
The cooling member,
[16]
An upper frame having a plate shape with a predetermined length so that the plurality of secondary batteries can be mounted on one surface, and
[17]
and a lower frame coupled to the other surface of the upper frame and provided with a refrigerant passage through which a refrigerant flows.
[18]
In addition, the refrigerant passage of the lower frame,
[19]
A concave-convex structure having a protruding portion toward the upper frame,
[20]
The protruding part of the concavo-convex structure toward the upper frame,
[21]
It may be configured to adhere to the other surface of the upper frame.
[22]
Moreover, both sides of each of the upper frame and the lower frame may be welded to each other.
[23]
And, both sides of each of the upper frame and the lower frame,
[24]
It can be coupled to each other using a mechanical bonding method.
[25]
In addition, the cooling member may further include sidewalls extending upward from both ends of the upper frame at both ends of the upper frame.
[26]
Furthermore, the cooling member may further include a clip member configured to fix both ends of each of the upper frame and the lower frame to each other.
[27]
And, the clip member,
[28]
a main body part extending along one surface of the upper frame and in close contact with one surface of the upper frame; and
[29]
A fixing portion bent from the body portion may be provided to surround both ends of the upper frame and the lower frame.
[30]
In addition, the upper frame,
[31]
A guide protrusion protruding from an upper surface of the upper frame toward the secondary battery may be provided to guide a mounting position of the plurality of secondary batteries.
[32]
And, the battery pack according to the present invention for achieving the above object includes at least one battery module.
[33]
In addition, the electronic device according to the present invention for achieving the above object includes the battery pack.
Effects of the Invention
[34]
According to one aspect of the present invention, the present invention provides a cooling member, an upper frame on which a plurality of secondary batteries are mounted, and a lower frame coupled to the upper frame and provided with a cooling passage, so that the heat conduction member interposed therebetween Without addition, a plurality of secondary batteries can directly contact the upper surface of the cooling member, thereby increasing cooling efficiency.
[35]
Furthermore, according to another aspect of the present invention, since the lower frame of the cooling member is configured to be adhered to the other surface of the upper frame, the assembly process of the cooling member can be performed without a separate fastening member. Accordingly, the present invention, compared to the prior art, can reduce the number of manufacturing parts and shorten the manufacturing time, it is possible to reduce the manufacturing cost.
[36]
And, according to another aspect of the present invention, in the present invention, by welding both sides of each of the upper frame and the lower frame to each other, it is possible to further increase the bonding strength between the upper frame and the lower frame. Accordingly, according to the present invention, when an external impact occurs while the battery module is in use, it is possible to further prevent leakage of refrigerant through the gap between the upper frame and the lower frame due to cracks in the cooling member.
Brief description of the drawing
[37]
The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is the details described in such drawings should not be construed as limited to
[38]
1 is a perspective view schematically illustrating a battery module according to an embodiment of the present invention.
[39]
2 is an exploded perspective view schematically illustrating components of a battery module according to an embodiment of the present invention.
[40]
3 is a vertical cross-sectional view schematically showing a state cut along line C-C′ of FIG. 2 .
[41]
4 is a perspective view schematically showing the appearance of some components of a battery module according to another embodiment of the present invention.
[42]
5 is a vertical cross-sectional view schematically showing some components of a battery module according to another embodiment of the present invention.
[43]
6 is a perspective view schematically showing the appearance of some components of a battery module according to another embodiment of the present invention.
[44]
7 is a perspective view schematically showing the appearance of a battery module according to another embodiment of the present invention.
[45]
8 is a perspective view schematically showing the appearance of some components of a battery module according to another embodiment of the present invention.
[46]
9 is a vertical cross-sectional view schematically illustrating some components of the battery module of FIG. 8 .
[47]
10 is a plan view schematically showing the appearance of some components of a battery module according to another embodiment of the present invention.
[48]
FIG. 11 is a horizontal cross-sectional view schematically illustrating a state cut along the line AA′ of FIG. 10 .
Mode for Carrying Out the Invention
[49]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors appropriately use the concept of terms in order to best explain their invention. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.
[50]
Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.
[51]
[52]
1 is a perspective view schematically illustrating a battery module according to an embodiment of the present invention. And, Figure 2 is an exploded perspective view schematically showing the configuration of the battery module according to an embodiment of the present invention. In FIG. 1 , an X-axis direction may be a right direction, a Y-axis direction may be a rear direction, and a Z-axis direction may be an upward direction.
[53]
Referring to FIGS. 1 and 2 , a battery module 200 according to an embodiment of the present invention may include a plurality of secondary batteries 210 and a cooling member 220 .
[54]
Here, the secondary battery 210 may be a cylindrical battery cell. In the cylindrical battery cell, electrode terminals 211 may be provided on an upper portion (corner portion of the upper portion) of the battery can. The electrode terminals 211 may be an anode terminal 211a and a cathode terminal 211b. The cylindrical battery cell has a battery cap on the top, and the center of the battery cap is positive.
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claims
[Claim 1]
a plurality of secondary batteries; and a cooling member configured to mount the plurality of secondary batteries, wherein the cooling member includes an upper frame having a plate shape with a predetermined length so that the plurality of secondary batteries can be mounted on one surface, and the other surface of the upper frame. A battery module comprising a lower frame coupled to and provided with a refrigerant passage configured to flow a refrigerant.
[Claim 2]
The method of claim 1, wherein the refrigerant flow path of the lower frame has a concave-convex structure having a protruding portion toward the upper frame, and the protruding portion of the concave-convex structure toward the upper frame is connected to the other surface of the upper frame. Battery module, characterized in that configured to be bonded.
[Claim 3]
The battery module according to claim 1, wherein both sides of each of the upper frame and the lower frame are welded to each other.
[Claim 4]
The battery module according to claim 1, wherein both sides of each of the upper frame and the lower frame are coupled to each other using a mechanical joining method.
[Claim 5]
The battery module according to claim 1, wherein the cooling member further includes sidewalls extending upward from both ends of the upper frame at both ends of the upper frame.
[Claim 6]
The battery module according to claim 1, wherein the cooling member further comprises a clip member configured to fix both ends of the upper frame and the lower frame to each other.
[Claim 7]
The body part of claim 6, wherein the clip member extends along one surface of the upper frame and is in close contact with one surface of the upper frame; and a fixing portion bent from the body portion so as to surround both ends of the upper frame and the lower frame.
[Claim 8]
The battery module according to claim 1, wherein the upper frame includes guide protrusions protruding from an upper surface of the upper frame toward the secondary batteries to guide mounting positions of the plurality of secondary batteries.
[Claim 9]
claims
[Claim 1]
a plurality of secondary batteries; and a cooling member configured to mount the plurality of secondary batteries, wherein the cooling member includes an upper frame having a plate shape with a predetermined length so that the plurality of secondary batteries can be mounted on one surface, and the other surface of the upper frame. A battery module comprising a lower frame coupled to and provided with a refrigerant passage configured to flow a refrigerant.
[Claim 2]
The method of claim 1, wherein the refrigerant flow path of the lower frame has a concave-convex structure having a protruding portion toward the upper frame, and the protruding portion of the concave-convex structure toward the upper frame is connected to the other surface of the upper frame. Battery module, characterized in that configured to be bonded.
[Claim 3]
The battery module according to claim 1, wherein both sides of each of the upper frame and the lower frame are welded to each other.
[Claim 4]
The battery module according to claim 1, wherein both sides of each of the upper frame and the lower frame are coupled to each other using a mechanical joining method.
[Claim 5]
The battery module according to claim 1, wherein the cooling member further includes sidewalls extending upward from both ends of the upper frame at both ends of the upper frame.
[Claim 6]
The battery module according to claim 1, wherein the cooling member further comprises a clip member configured to fix both ends of the upper frame and the lower frame to each other.
[Claim 7]
The body part of claim 6, wherein the clip member extends along one surface of the upper frame and is in close contact with one surface of the upper frame; and a fixing portion bent from the body portion so as to surround both ends of the upper frame and the lower frame.
[Claim 8]
The battery module according to claim 1, wherein the upper frame includes guide protrusions protruding from an upper surface of the upper frame toward the second guide mounting positions of the plurality of secondary batteries.
[Claim 9]
Of claims 1 to 8, the battery according to any oneA battery pack comprising at least one module.