KR20190030835A - Apparatus for cooling of battery and electric vehicle having the same - Google Patents

Abstract

The present invention relates to a cooling structure of a battery cell. A battery unit located inside the battery cell is brought into contact with a heat dissipating member made of an elastic metal. Even when the battery unit expands or contracts during charging and discharging, the battery unit and the heat dissipating member maintain contact with each other, so that the heat dissipating member absorbs and discharges heat generated in the battery unit efficiently.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery cooling apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery cooling device and an electric vehicle having the battery cooling device, and more particularly, to a battery cooling device and an electric vehicle having the battery cooling device that effectively absorb and release heat generated in a battery unit of a battery device.

A battery cell is a combination of a positive electrode plate and a negative electrode plate in a battery, and is separated from other cells in an electrolyte in a case of one compartment. Batteries made from these battery cells have become a major industry issue how to cool the heat generated.

This type of heat generation is most common during charging. Therefore, if the battery is not adequately cooled, the performance of the battery is reduced and its life is shortened. Accordingly, there is a possibility of explosion, which causes serious safety problems.

Since the battery is a basic part used in various industrial fields, the heat generation of the battery is a very important issue, and accordingly, the management of the battery heat is continuously being studied.

Korea Patent Publication No. 10-2009-0043566

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to effectively cool the heat generated in a battery cell.

Another object of the present invention is to provide a battery pack having a plurality of battery cells connected to each other by a simple connection between battery cells and cooling the battery pack effectively.

Another object of the present invention is to provide a heat dissipating member that absorbs and discharges heat in contact with a battery by providing a structure in which the contact area with the battery is extended to improve the heat dissipation effect generated in the battery.

According to an aspect of the present invention, there is provided a battery cell cooling structure, comprising: an upper case having a battery seating portion on which a plurality of battery units can be seated on a predetermined area; A lower case having a battery receiving portion capable of receiving a lower portion of the battery unit in the same area as the upper case and having a heat radiating member coupling portion at one side; And at least one heat dissipation member for absorbing and discharging the heat of the battery mounted on the upper case and the lower case by being coupled to the heat dissipating member engaging part by being positioned between the upper case and the lower case based on a material of elasticity, Member.

Here, the heat dissipating member is moved forward, backward, left, and right in accordance with the expansion and contraction of the diameter of the battery unit due to heat generation during charging and discharging of the battery unit, thereby maintaining contact with the battery unit.

In addition, when the heat dissipating member is composed of two or more heat dissipating members, the heat dissipating member supporting surface is formed at the end of the heat dissipating member, and at least two of the heat dissipating members are expanded and contracted while the heat dissipating member supporting surfaces are in contact with each other, And the heat radiation member is supported and moved with respect to each other.

The heat dissipation member includes a battery contact surface that contacts the battery unit and absorbs heat of the battery unit. A heat transfer diagram in which heat absorbed by the battery contact surface is conducted; And the cooling protrusion member is connected to a cooling plate through which the cooling water flows so that the heat of the battery absorbed from the battery contact surface is transmitted to the cooling plate through the cooling plate, And moves to the cooling plate through the cooling projection member.

In addition, when the heat dissipating member is composed of two heat dissipating members, the end faces are formed in a U-shape and are in contact with each other.

In addition, the heat dissipating member may form an air passage by separating a plurality of the battery units. At least one slit is formed on one side of the upper case and the lower case, and air is introduced into the air passage And absorbs and discharges the heat of the battery while circulating and flowing.

According to another aspect of the present invention, there is provided a battery cell comprising: a plurality of batteries, each battery including an electrolyte and an anode and a cathode; And a heat dissipating member which is provided between the plurality of electric power units and resiliently contacts the electric power unit to absorb and discharge heat generated in the electric power unit, Or more of the cooling protrusion member is formed, and the heat absorbed through the cooling protrusion member is released.

Here, the heat dissipating member is moved forward, backward, left, and right in accordance with the expansion and contraction of the diameter of the battery unit due to heat generation during charging and discharging of the battery unit, thereby maintaining contact with the battery unit.

The cooling protruding member is connected to the cooling plate, and the heat of the battery absorbed by the heat dissipating member is transferred to the cooling plate.

In addition, when the heat dissipation member is composed of two heat dissipation members, the cross section is formed in a shape of an ohmic shape and is in contact with each other.

The heat dissipation member separates the plurality of battery units from each other to form an air passage, and the air is introduced into the air passage through the slit and circulates while absorbing and discharging heat from the battery unit.

According to another aspect of the present invention, there is provided a cooling system for a battery cell, comprising: a plurality of batteries including a positive electrode plate and a negative electrode plate, At least one cooling protrusion member formed on one side of the heat dissipating member and having a resilient contact with the battery unit between the plurality of battery units to absorb and discharge heat generated in the battery unit; And a cooling plate connected to the cooling projection member to cool the heat absorbed by the heat radiation member.

According to another aspect of the present invention, there is provided a battery pack comprising: a battery unit including a plurality of battery cells; And a printed circuit board (PCB) that is assembled at the upper and lower parts of the battery unit and is in contact with the battery unit to be electrically connected to each other. The battery cell includes a battery seat And an upper case having a heat dissipating member coupling part at one side thereof; A lower case having a battery receiving portion capable of receiving a lower portion of the battery unit in the same area as the upper case and having a heat radiating member coupling portion at one side; And at least one heat dissipation member for absorbing and discharging the heat of the battery mounted on the upper case and the lower case by being coupled to the heat dissipating member engaging part by being positioned between the upper case and the lower case based on a material of elasticity, Member.

Here, the PCB includes a convex region formed at a position where the upper and lower portions of the battery unit are assembled and abutted, and the convex region is closely contacted with the upper and lower portions of the battery unit when the PCB is assembled with the battery unit. Thereby electrically connecting the PCB and the battery unit electrically.

In addition, the PCB is assembled with a plurality of assembly screws at the top and bottom of the battery unit.

In addition, the battery unit is assembled into the PCB in a plurality of rows to increase power capacity.

The cooling protrusion member protrudes to an upper end and a lower end, and a cooling plate is connected to the cooling protrusion member so that heat generated from the battery unit moves to the cooling plate.

When the PCB is assembled to the battery unit, the cooling protrusion member is inserted into the heat dissipating member through-hole, so that the PCB and the battery And supports the assembly of the unit.

In addition, the battery cell has hooks and hooks formed on both sides of the upper case and the lower case, respectively, and the hooks are completely inserted into the hooking grooves and hooked to the hooks, And the cell is assembled.

In addition, a plurality of case protrusions are formed on the upper case and the lower case at a position of a corner point, a case through groove is formed in the PCB at a position perpendicular to the case protrusion, and the PCB is assembled to the battery unit The case protrusion penetrates into the case through-hole to support the assembly of the PCB and the battery unit.

According to another aspect of the present invention, there is provided a battery cooling apparatus comprising:

1. A battery cooling apparatus for cooling a heat generated in a battery unit by providing a cooling plate in a battery unit in which a plurality of battery units are arranged,

And a heat dissipating member contacting the battery unit to absorb heat and transfer the absorbed heat to the cooling plate,

The heat-

A battery contact surface which is made of an elastic material and closely contacts the circumferential surface of the battery in a circular arc shape of 180 degrees or more to absorb the heat of the battery unit;

A thermally conductive pattern that is bent at one side end of the battery contact surface to conduct heat absorbed by the battery contact surface; And

And a cooling protruding member extending from the thermoelectric conversion unit and transmitting the heat of the thermoelectric conversion unit to a cooling plate.

Further, the heat-

The heat dissipating member supporting surfaces of the neighboring battery units are elastically contacted with the heat dissipating member supporting surfaces of the neighboring battery units.

Further, the heat-

A pair of battery contact surfaces contacting the circumferential surface of the battery unit,

And one side end portion of each of the pair of battery contact surfaces is bent and integrated to form a single thermally conductive surface.

In addition, the pair of battery contact surfaces may be formed,

And is formed in an arcuate shape that is directed from the inside to the outside between two adjacent battery units arranged in the vicinity or is formed in an arc shape that is directed from the outside to the inside.

The cooling projection member

The cooling plate is protruded from upper and lower ends of the thermoelectric conversion unit and is connected to a cooling plate disposed on the outer side of the PCB through the PCB provided on the upper and lower surfaces of the battery unit to transmit the heat of the battery unit to the cooling plate .

The battery cooling apparatus may further include:

An upper case having a battery seating part on which a plurality of battery parts can be seated on a predetermined area and having a heat radiating member engaging part on one side;

A lower case having a battery receiving portion capable of receiving a lower portion of the battery unit in the same area as the upper case and having a heat radiating member coupling portion at one side; Further comprising:

The heat-

And is disposed between the upper case and the lower case based on a material of elasticity, and is coupled to the radiating member coupling part.

The battery cooling apparatus may further include:

A battery cell including the upper case, the lower case, and the heat radiation member,

A plurality of battery cells are arranged and electrically connected to the cathode and the anode of the battery unit on the upper and lower surfaces thereof to provide a PCB for power input / output,

A cooling plate is provided on the upper and lower surfaces of the upper and lower PCBs, respectively,

The cooling protrusions of the heat dissipation members included in the battery cell penetrate the PCB and are coupled to the cooling plate to discharge the heat of the battery unit to the cooling plate.

Further, the battery contact surface of the heat dissipating member,

And both side end portions of the imaginary center line passing through the center of the cross section of the electric charge section at right angles to the thermoelectric drawing are further extended in an arc shape from 0 to 180 degrees, And a heat dissipating member supporting surface is formed.

And one side end portion and the other side end portion of the battery contact surface,

And is brought into contact with the circumferential surface of the battery unit from 0 degrees to 225 degrees and from 335 degrees to 0 degrees with respect to the imaginary center line of the cross section of the battery.

Further, in the heat radiation member according to the present invention,

A semi-arcuate battery contact portion made of a material capable of thermal conduction and capable of imparting elasticity and having an arcuate surface contact with the periphery of the battery portion to absorb heat of the battery portion; A first heat dissipation member including a thermal protrusion formed by extending the heat absorbed from the battery contact surface, and a cooling protrusion member protruding from upper and lower portions of the thermal protrusion and radiating the heat transferred to the cooling plate;

A semi-arcuate battery contact portion which is in surface contact with the peripheral portion of the battery at a position corresponding to the battery contact surface of the first heat dissipating member to absorb heat of the battery portion; A second heat radiating member including a plurality of heat conductive pieces protrudingly extended at predetermined intervals; , ≪ / RTI &

A slit corresponding to the heat conductive piece of the second heat dissipating member is formed on the bent surface between the battery contact surface of the first heat dissipating member and the thermally conductive sheet and the heat conduction piece of the second heat dissipating member is inserted through the slit, So as to conduct the heat of the second heat radiation member.

In addition, the first and second heat-

The heat dissipating member support surfaces of the first and second heat dissipation members bent at opposite ends of the other side end portions of the battery contact surfaces in a direction opposite to the arcuate shape are spaced apart from each other by a predetermined distance, And the heat releasing member supporting surfaces are elastically contacted with each other.

The cooling structure of the battery cell according to the present invention has the following effects.

First, cooling is efficient. In the present invention, a heat dissipating member having an elastic property is provided inside the battery cell. Such a heat dissipating member is appropriately maintained in tension such that the heat dissipating member is reduced or expanded by using the elasticity property as the battery unit is expanded and contracted in the state where the battery unit is in contact with each of the battery units containing the electrolyte solution in the battery cell , And maintains an area in contact with the battery. Therefore, the battery is efficiently cooled even when the battery is charged and discharged by the same heat dissipation.

Second, the structure is simple. The cooling structure of the battery cell according to the present invention is composed of four parts without any fastening by screws or screws. That is, the four battery units are kept in contact with the two heat-radiating members, and the upper and lower cases of the heat-radiating member are coupled to each other to constitute the battery cell. As a result, the battery cell has a simple structure in which the four components are coupled to each other. As a result, the process is simplified and the process cost is reduced.

Third, various methods can be applied to manage the heat. In the present invention, the heat absorbed through the conduction of heat by contact with the electrode in the heat dissipating member can be released by contacting the cooling channel. Also, a space may be empty between the heat dissipating members, and a slit may be formed at one side of the case so that external air may be introduced into or discharged from the battery cell. Therefore, in the present invention, since the water-cooled type in which heat generated in the battery cell is discharged to the cooling channel through conduction and the air-cooled type in which heat generated in the battery cell is discharged to the outside by circulation of air can be used at the same time, There is an excellent effect in managing the heat.

1 is a perspective view of a cooling structure of a battery cell according to an embodiment of the present invention.
2 is a bottom perspective view of the cooling structure of the battery cell shown in Fig.
3 is an exploded perspective view of the cooling structure of the battery cell shown in FIG.
4 is a front exploded view of the cooling structure of the battery cell shown in Fig.
FIG. 5 is a view schematically illustrating a state in which the upper case is removed from a cooling structure of a battery cell according to an embodiment of the present invention, and the battery contact surface of the heat dissipating member is reduced in accordance with the expansion of the battery, thereby maintaining contact with the battery.
FIG. 6 is a side view illustrating the discharge of conducted heat in the cooling structure of a battery cell according to an embodiment of the present invention.
7 is a side view showing the cooling structure of the battery cell shown in FIG. 6 in another direction.
FIG. 8 is a view schematically showing that the heat dissipating member is resiliently expanded by the elasticity of the battery in the cooling structure of the battery cell shown in FIG. 5 so as to keep contact with the battery.
FIG. 9 is a plan view schematically illustrating the discharge of heat generated inside a battery cell in an air-cooling type in a cooling structure of a battery cell according to an embodiment of the present invention.
10 is a perspective view illustrating assembling of a battery pack by connecting battery cells according to an embodiment of the present invention.
11 is a bottom perspective view of the battery pack shown in FIG.
FIG. 12 is a cross-sectional view schematically showing hooks and supports formed in the upper and lower cases of the battery pack shown in FIG. 10 interlocked with each other.
13 is an exploded perspective view of the battery pack shown in FIG.
FIG. 14 is a view schematically showing that a convex region is formed on a PCB in a battery pack composed of a battery cell according to the present invention and closely contacts with the battery.
FIG. 15 is a perspective view showing another embodiment of a battery pack constructed as a battery cell according to the present invention, in which a battery cell is added laterally.
16 is a cross-sectional view of a main portion for explaining a structure of a heat radiation member according to still another embodiment of the present invention.
17 is an explanatory view of a structure of a heat radiation member according to still another embodiment.
18 is a cross-sectional view of a main portion for explaining a structure of a heat radiation member according to still another embodiment of the present invention.
19 is a schematic perspective view for explaining the structure of the heat radiation member of Fig. 18;

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, some configurations which are not related to the gist of the present invention may be omitted or compressed, but the configurations omitted are not necessarily those not necessary in the present invention, and they may be combined by a person having ordinary skill in the art to which the present invention belongs. .

<Battery cell>

FIG. 1 is a perspective view of a cooling structure of a battery cell according to an embodiment of the present invention, FIG. 2 is a bottom perspective view of a cooling structure of the battery cell shown in FIG. 1, Fig. 4 is a front exploded view of the cooling structure of the battery cell shown in Fig. 3; Fig.

1 to 4, a cooling structure of a battery cell 1 according to an embodiment of the present invention includes a battery cell 1, a battery unit 100, a case, and a heat radiating member 400 .

The battery unit 100 has an electrolytic solution contained therein, and a positive electrode plate and a negative electrode plate are combined. Basically, the battery unit 100 can be used in a multiples of 4, such as 4, 8,

The case is made of a metallic material or a plastic synthetic material that is elastic and does not deform its shape due to the heat generated by the battery unit 100. The case is located at the upper and lower portions of the battery unit 100 and is seated to fix the battery unit 100 . Such a case is referred to as an upper case 200 located above the battery unit 100 and a case located below the battery unit 100 is referred to as a lower case 300. [

Here, the upper and lower portions of the battery 100 may be a portion formed with an anode or a portion formed with a cathode. The lower part of the battery part 100 is a negative electrode opposite to the upper part of the battery part 100 and the upper part of the battery part 100 is a negative electrode, And the lower part becomes the anode opposite to the upper part of the battery part 100. [ In the present invention, an upper portion of the battery 100 is referred to as an anode and a lower portion of the battery 100 is referred to as a cathode for convenience of explanation.

The upper case 200 includes a battery mounting part 210, a heat radiating member coupling part 220, and a slit 230.

The battery mounting portion 210 is a portion in which the through holes are formed so that the four battery modules 100 can be seated from the upper case 200, respectively.

The pair of heat dissipating member engaging portions 220 are provided on both sides of the upper case 200 by extending a predetermined length toward the paper surface. The heat dissipating member engaging portion 220 is formed by protruding the retaining ring 221 in the inner direction and engaging the heat dissipating member 400 to couple the upper case 200 and the heat dissipating member 400 together.

The slits 230 are formed in a pair of predetermined lengths at positions where the heat radiating member engaging portions 220 are formed in the upper case 200 and provide a passage for allowing the air inside the battery cells 1 to be discharged to the outside. The number of such slits 230 can be increased as practiced.

Here, the upper case 200 and the lower case 300 are formed in the same shape with different names depending on the positions of the upper case 100 and the lower case 300. Therefore, the battery mounting part 310, the heat radiating member engaging part 320, and the latching ring 321, which constitute the lower case 300, are the same as those of the upper case 200 and have the same functions.

However, the slit 330 differs from the slit 230 of the upper case 200 in the lower case 300. That is, the upper case 200 provides the passage for allowing the air inside the battery cell 1 to be discharged. However, the slit 330 in the lower case 300 is formed by the cooling protrusion member 422 of the heat dissipating member 400 To pass through the lower case 300 and come into contact with the cooling channel.

The heat dissipating member 400 is made of a metal having elasticity such as copper or aluminum and is formed into a substantially Ω-shaped cross section. Two heat dissipating members 400 are disposed in the battery cell 1 and are coupled to the upper case 200 and the lower case 300 and one heat dissipating member 400 is connected to the two battery units 100 Absorbing heat respectively, and discharging the absorbed heat through the connected cooling channels and the air passage 500. The heat dissipating member 400 is formed with a battery contact surface 410, a thermally conductive surface 420, and a heat radiating member supporting surface 430.

The battery contact surface 410 is a surface contacting the battery unit 100 in the heat radiation member 400 and is in contact with the periphery of about 180 degrees of the end face of the battery unit 100 and the height of the battery unit 100. Since the elastic contact force of the elastic force restoring force is applied to the battery contact surfaces 410 so as to expand diagonally toward the vertexes of the upper case 200 and the lower case 300 respectively when the diameter of the battery unit 100 is expanded, Or reduced.

The thermoelectric conversion drawing 420 is a flat surface for moving the heat absorbed by the battery contact surface 410 to the cooling channel, and a case combining slit 421 and a cooling protrusion member 422 are formed.

The case coupling slit 421 is formed at the upper end and the lower end of the thermal transfer drawing 420, respectively. In this case, when the upper case 200 and the lower case 300 are pressed, the latching hooks 221 and 321 formed on the upper case 200 and the lower case 300 are hooked, respectively, (200) and the lower case (300).

Meanwhile, in another embodiment of the present invention, the heat dissipating member 400 may be coupled to the upper case 200 and the lower case 300. For example, protrusions are formed on both sides of the flat surface of the heat dissipating member 400, and the upper case 200 and the lower case 300 are provided with latching portions so that the protrusions and the latching portions interlock with each other, And is coupled to the case 200 and the lower case 300. Accordingly, the present invention can be implemented in various structures as long as the heat dissipating member 400 can be fixed to the upper case 200 and the lower case 300 by being coupled with each other.

The cooling projection member 422 extends through the lower case 300 at the lower end of the thermoelectric conversion plate 420 and is in contact with the cooling channel. Accordingly, the heat absorbed by the thermoelectric conversion unit 420 is discharged to the cooling protrusion member 422 which is in contact with the cooling channel, so that the heat of the battery unit 100 is finally discharged.

The heat releasing member supporting surfaces 430 are brought into contact with each other so that the two heat releasing members 400 provided inside the battery cell 1 can be supported by each other. The heat dissipation member support surface 430 slides leftward and rightward in the battery cell 1 as the battery 100 is expanded and contracted during charging and discharging of the battery unit 100.

Hereinafter, it will be described that the cooling structure of the battery cell 1 according to the present invention releases heat generated in the battery cell 1 with reference to the drawings.

5 is a view schematically showing a state in which the upper case is removed from the cooling structure of the battery cell 1 according to an embodiment of the present invention to keep the contact surface of the heat dissipating member in contact with the battery due to the expansion of the battery. FIG.

As shown in FIG. 5, the battery cell 1 generates heat when the battery pack 100 is charged or the battery cell 1 is discharged.

At this time, the diameter of the battery unit 100 is increased finely as the battery unit 100 is heated. The battery contact surface 410 located between the battery units 100 and the battery unit 100 in contact with the battery unit 100 receives a force and the contact with the battery unit 100 The battery contact surface 410 is slightly moved in the direction of arrow F, which is the right direction, and expanded so that the thermoelectric conversion device 420 is assembled to the center of the battery cell 1 in a state where the thermoelectric conversion device 420 is fixed.

At this time, the battery unit 100 may not always expand to the same circular shape. That is, when the battery 100 generates heat, the battery 100 may be expanded to have a horizontal diameter of a and a vertical diameter of b. Therefore, each of the battery contact surfaces 410 is moved in the vertical direction b by a distance a, since the elastic restoring force is applied toward the vertexes of the upper case 200 and the lower case 300. Accordingly, the battery contact surface 410 of the heat dissipating member 400 can be moved forward, backward, leftward, and rightward to expand or contract.

The heat transfer diagram 420 is fixed and supported by the heat radiating member supporting surfaces 430 of the respective heat radiating members 400 being in contact with and slid against the battery contact surfaces 410 facing each other, The structure of the heat radiation member 400 is maintained together with the heat transfer diagram 420 inside.

5, tension is applied to the battery contact surface 410 in accordance with the expansion of the battery unit 100 in a state in which the battery contact surface 410 is moved, so that the tension is maximally increased.

FIG. 6 is a side view showing the heat discharged from the cooling structure of the battery cell according to an embodiment of the present invention, and FIG. 7 is a side view illustrating the cooling structure of the battery cell shown in FIG. 6 in another direction.

As shown in FIGS. 6 and 7, the heat is absorbed by the battery 100 due to conduction at the battery contact surface 410, and then conducted to the entire area of the heat radiation member 400. That is, since the heat dissipating member 400 is a metallic material, the heat absorbed by the battery contacting surface 410 spreads evenly and moves to the thermoelectric conversion display 420.

The thermoelectric conversion plate 420 is formed at a predetermined height vertically and has a cooling protrusion member 422 through which the lower case 300 passes. Therefore, the heat absorbed by the cell 100 is finally transferred to the cooling channel 422 because the cooled protrusive member 422 is connected to the cooling channel through which the cooling water flows, So that cooling can be performed.

The heat generated in the battery 100 is absorbed by the conduction at the battery contact surface 410 and the heat absorbed at the battery contact surface 410 is conducted to the thermoelectric conversion diagram 420, And is conducted to the cooling protruding member 422 so that heat is released by the cooling channel connected to the cooling protruding member 422 to cool the battery unit 100.

FIG. 8 is a view schematically showing that the heat dissipating member is resiliently expanded by the elasticity of the battery in the cooling structure of the battery cell shown in FIG. 5 so as to keep contact with the battery.

As shown in FIG. 8, when the battery unit 100 is cooled, the diameter of the battery unit 100 is reduced and returned to its original size. At this time, the heat dissipating member 400 also expands again according to the reduction of the battery unit 100 by the elastic restoring force.

That is, when the diameter of the battery unit 100 is reduced in a state where the battery contact surface 410 of the heat dissipating member 400 is in contact with the battery unit 100, The contact surface 410 is urged by the elastic restoring force to expand again in the direction of arrow F '. Therefore, the heat radiating member supporting surface 430 of the battery contact surface 410 contacting with each other is slid in the direction of the arrow.

At this time, the four battery units 100 may not be expanded and reduced in diameter when the heat generation is not the same in the charging and discharging situations. That is, as shown in FIG. 8, some of the four cell units 100 in the planar battery cell 1 may be expanded by a, and the remainder may be expanded by b larger than a.

In this case, if the left and right battery parts 100 are inflated to different diameters, the heat dissipating member supporting surface 430 may be formed in such a manner that the battery parts 100 are different from each other inside the center of the battery cell 1 on the plane by the expanded diameter The battery contact surface 410 of the heat radiation member 400 will be reduced.

Therefore, in the battery cell 1 according to the present invention, the surface of the battery contact surface 410 which is in contact with each of the battery units 100, on the basis of the elastic property, 100 can be reduced to the center of the battery cell 1 in a planar manner so that the battery 100 and the battery contact surface 410 can be kept in constant contact with each other.

In addition, when the battery units 100 disposed in the upper and lower portions are expanded to different diameters, the heat dissipating member support surface 430 may not slide equally in the center of the battery cell 1. That is, if the heat radiating member supporting surfaces 430 formed on the two heat radiating members 400 are in contact with each other and the upper and lower battery units 100 are expanded to different diameters, they can not slide together by the same distance will be.

However, since the length of the heat releasing member supporting surface 430 can be sufficiently long enough to expand the diameter of the battery unit 100, even if the upper and lower battery units 100 expand to different diameters at the time of heat generation The two battery contact surfaces 410 can be supported in a staggered state by the heat dissipating member support surface 430 so that the battery contact surface 410 can be held constantly even when the battery unit 100 expands to different diameters It is possible to maintain the contact with the battery part 100 by the contact part.

The reason why the empty space is formed so that the inner side surface 340 of the lower case 300 does not contact the heat radiating member supporting surface 430 is that the diameter of the battery unit 100 is increased due to the heat of the battery unit 100, The battery contact surface 410 also expands or contracts when the battery contact surface 410 is expanded or contracted, so that the heat dissipating member support surface 430 also has a space to be slid so that the battery contact surface 410 can easily expand or contract. This is also the same as the inner side surface of the upper case 200.

As described above, in the battery cell 1 according to the present invention, even if the diameter of the battery unit 100 is expanded or reduced according to the heat of the battery unit 100, the battery of the heat dissipating member 400, which is in contact with the battery unit 100, The contact surface 410 is always expanded or contracted by the elasticity so as to be in contact with the battery unit 100 at all times so that the heat of the battery unit 100 can be easily absorbed by the heat of the battery unit 100, Can be cooled.

FIG. 9 is a plan view schematically illustrating the discharge of heat generated inside a battery cell in an air-cooling type in a cooling structure of a battery cell according to an embodiment of the present invention.

As shown in FIG. 9, the cooling structure of the battery cell 1 according to the present invention is not only a water-cooled type in which heat is released by being connected to a cooling channel through which cooling water flows, but also discharges heat in an air- It is possible.

That is, in the battery cell 1, the two battery contact surfaces 410 are in contact with each other by the heat radiating member supporting surface 430, and the space except for the point where the battery contact surfaces are abutted forms an air passage 500 .

Therefore, outside air can be introduced from the slit 230 formed in the upper case 200 into the air passage 500 in the battery cell 1, and the inflow air moves in the battery cell 1, The heat absorbing member 400 absorbs the heat of the paper 100 and the paper 100 and partially absorbs the heat of the paper 100 and the heat dissipating member 400.

Since the air that absorbs the heat has a property of rising in the atmosphere, relatively cool air flows into the lower end of the battery cell 1 as the air that absorbs heat rises in the battery cell 1, Circulation occurs.

In this process, the air that has absorbed the heat further rises and is discharged in the direction of the arrow through the slit 230 of the upper case 200. The air that has flown into the empty air passage 500 again flows in, Absorbing, and releasing heat by repeating the ascending process.

Accordingly, in the present invention, not only the heat dissipating member 400 absorbs heat by conduction, but the cooling and discharging of the battery unit 100 is performed by releasing or cooling the heat by the connected cooling channel, The cooling structure of the battery cell 1 can be achieved in two ways of releasing the heat generated in the battery unit 100 by the movement of air introduced into the battery cell 1.

In the present invention, a structure in which two heat dissipating members 400 are in contact with four power units 100 has been described. However, according to the present invention, the heat dissipating unit 400 may include one structure, 0.0 &gt; 100 &lt; / RTI &gt;

For example, the two heat dissipating members 400 described above may be formed as a single heat dissipating member by integrally forming the abutting portions of the respective heat dissipating member supporting surfaces 430. Accordingly, the heat radiating member formed by one unit can be kept in contact with the battery unit 100 by being expanded or contracted by elasticity when the battery unit 100 is expanded or contracted.

In addition, the heat radiating member 400 may be formed in four pieces so as to be in contact with each of the four battery units 100.

For example, in each of the heat dissipation members, the heat dissipation member is divided into halves to form the heat dissipation member support surface, and the four heat dissipation members disposed in the battery cell 1 are divided so that the heat dissipation member support surfaces are in contact with each other And contacts the battery 100 to form a cooling structure. Accordingly, the four heat dissipating members can be expanded or contracted by elasticity in accordance with the expansion and contraction of the battery unit 100, thereby maintaining the contact with the battery unit 100.

As described above, in the present invention, two heat dissipating members 400 are first brought into contact with the battery unit 100 in contact with the battery unit 100, thereby releasing heat generated in the four battery units 100, It is also possible to radiate the heat generated in the battery unit 100 by contacting the four battery units 100 with one radiating member and by dividing the radiating member into four and contacting the four radiating units 100, It is also possible to emit heat generated in the heat exchanger 100.

Therefore, in the present invention, the heat dissipating member 400 can contact the battery unit 100 in various forms regardless of the number of the heat dissipating members 400, and the heat generated in the battery unit 100 can be discharged to the outside.

<Battery pack>

FIG. 10 is a perspective view showing a battery pack assembled by connecting the battery cells according to the embodiment of the present invention, and FIG. 11 is a bottom perspective view of the battery pack shown in FIG.

10 to 11, the battery pack is constructed by assembling the PCB 900 at the upper and lower ends in a state where a plurality of battery cells 600, 700, and 800 are arranged in a row and a row.

Referring to FIG. 12, a description will be given of a state in which battery cells 600, 700, and 800 are assembled with each other in a battery pack.

FIG. 12 is a cross-sectional view schematically showing hooks and supports formed in the upper and lower cases of the battery pack shown in FIG. 10 interlocked with each other.

12, the hooks 610 and 810 formed in the upper case 200 and the lower case 300 are inserted into the latching grooves 710, 720, respectively.

For example, assume that a battery cell assembled one laterally is referred to as a first battery cell 600, a second battery cell 700, and a third battery cell 800. Hooks 610 and 810 are formed on one side of the rim of the upper case 200 and the lower case 300 in the first battery cell 600 and the third battery cell 800, respectively.

In the second battery cell 700, latching grooves 710 are formed on both sides of the upper case 200 and the lower case 300. The hooking grooves 710 are formed in the center of the upper case 200 and the lower case 300 so that the hooks 610 and 810 can be inserted into the hooking grooves 710. The hooks 610 And 810 are not separated from each other.

When the hooks 610 and 810 formed in the upper case 200 and the lower case 300 of the first battery cell 600 and the third battery cell 800 are inserted into the latching groove 710, The hooks 610 and 810 are completely retracted into the retaining grooves 710 and the retaining legs 720 are restored to their original positions and hooked to the hooks 610 and 810. [ The first battery cell 600 and the third battery cell 800 are assembled to both sides of the second battery cell 700 due to the engagement of the hooks 610 and 810 and the support base 720.

In the present invention, the battery cells are assembled by hooking the hooks 610 and 810 formed in the upper case 200 and the lower case 300 and the support 720 formed in the latching groove 710 with each other . However, in the present invention, the hooks 610 and 810 are not limited to the hooks 720 formed in the latching grooves 710, but various fixing means may be provided in the battery cells 600, 700 and 800, (600, 700, 800) can be assembled.

Hereinafter, a state in which a plurality of battery cells 600, 700, and 800 and the PCB 900 are assembled will be described.

13 is an exploded perspective view of the battery pack shown in FIG.

13, the first battery cell 600, the second battery cell 700 and the third battery cell 800 assembled laterally are constituted by one battery unit, And is fixed to the PCB 900 with the assembly screw 2 as shown in FIG. 13 in a state of being arranged in rows, and finally assembled into a battery pack.

That is, the upper case 200 and the lower case 300 of the respective battery cells 600, 700, and 800 are formed with threaded engagement grooves 620, 730, and 820 at the center thereof, Screw through grooves 910 having the same size as the screw engagement grooves 620, 730 and 820 formed in the case 200 and the lower case 300 are formed. Accordingly, when the assembly screw 2 is tightened through the screw through-hole 910 and the screw-engaging grooves 620, 730 and 820 while the PCB 900 is in contact with the upper and lower ends of the battery cell, The PCB 900 and the battery cells 600, 700 and 800 can be electrically connected to each other by the contact between the battery 900 and the PCB 900, .

As described above, when the heat of the battery unit is increased and assembled to the PCB 900, a battery pack having a larger power capacity can be manufactured.

Here, the PCB 900 is additionally formed with a through-hole to further assemble the battery cell with the battery cell. The case 900 is formed in the PCB 900 and the upper case 200 and the lower case 300 of the battery cells 600, Protrusions 630, 740 and 830 are formed.

Accordingly, when the PCB 900 contacts the battery cell, the case protrusions 630, 740, and 830 pass through the case through-hole 920. Therefore, the case protrusions 630, 740, and 830 are constrained to the case through-hole 920, so that the battery cell and the PCB 900 can be more firmly assembled, and when the battery cell expands due to heat generation in the battery cell The position between the plurality of battery cells can be maintained firmly.

In the above-described battery cell 1, only the cooling protrusions 422 are protruded to the lower end. However, the cooling protrusions 640, 750 and 840 may be formed at the upper ends of the battery cells 1 in addition to the lower ends thereof .

That is, as shown in FIGS. 10 to 13, the cooling protrusions 640, 750, and 840 passing through the upper case 200 and the lower case 300 can be identified in the battery cells 600, 700, have. The PCB 900 is formed with a heat dissipating member through-hole 930 in both the PCB 900 contacting the upper end and the PCB 900 contacting the lower end in the same manner as the case through-hole 920.

Accordingly, the cooling protrusions 640, 750, and 840 penetrate through the heat dissipating member through-hole 930 when the PCB 900 contacts the battery cells 600, 700, and 800. Accordingly, the case protrusions 630 and 740 700 and 800 and the PCB 900 are assembled more firmly and heat is generated in the battery cells 600, 700 and 800, and the battery cells 600, 700, 800 can be maintained even when the battery cells 600, 700, 800 expand.

After the battery pack is assembled, the cooling protrusions 640, 750, and 840 are connected to the cooling plate to discharge heat generated from the battery pack to the outside.

On the other hand, the provision of the cooling protrusions 640, 750, and 840 at both the upper and lower ends can provide a degree of freedom in installing the battery pack.

For example, if the space in which the battery pack is installed is narrow and the battery pack and the components electrically connected to the battery pack are to be installed above the space other than the floor, a cooling protrusion member protruding from the lower end of the battery pack, 640, 750, and 840) to connect the cooling plate to the battery pack.

If the battery pack is to be installed on the floor, a cooling plate is connected to the cooling protrusions 640, 750, and 840 protruding from the upper end of the battery pack in consideration of the positions of the components electrically connected to the battery pack and the battery pack The battery pack can be installed.

In the present invention, since the cooling plate can be connected to the upper and lower ends of the battery pack, it is possible to easily adjust and arrange the positions of the machine and the apparatus in the space where the battery pack is installed .

On the other hand, in the battery pack, as shown in FIG. 14, a fine convex region 940 may be formed on the PCB 900 to more closely contact the PCB 900 and the battery.

FIG. 14 is a view schematically showing that a convex region is formed on a PCB in a battery pack composed of a battery cell according to the present invention and closely contacts with the battery.

As shown in FIG. 14, a convex region of elasticity is formed in an area of the PCB 900 that is in a straight line with the battery unit 100. When the battery cell and the PCB 900 are assembled by tightening with the assembly screw 2, the convex area 940 is lowered by the PCB 900 so that the convex area 940 presses the battery unit 100 in the direction of the arrow So that the battery unit 100 and the PCB 900 can be brought into electrical contact with each other.

The pressing of the PCB 900 by the PCB 900 increases the frictional force between the PCB 100 and the PCB 900 by making the PCB 900 and the PCB 100 completely close to each other, So that the assembly of the battery cell and the PCB 900 can be more firmly maintained.

FIG. 15 is a perspective view showing another embodiment of a battery pack constructed as a battery cell according to the present invention, in which a battery cell is added laterally.

As shown in FIG. 15, a unit consisting of the first battery cell 600, the second battery cell 700, and the third battery cell 800 has one battery cell in the lateral direction, Respectively.

At this time, hooks 610 and hooking grooves 710 are formed on both sides of the upper case 200 and the lower case 300, respectively. That is, if hooks 610 are formed on both sides of the upper case 200 and the lower case 300, the hooking grooves 710 are formed on the other side. On the other hand, if the latching groove 710 is formed on one side, the hook 610 is formed on the other side. Accordingly, if the hooks 610 are hooked together with the latching grooves 710 of the other battery cells, the battery cells can be assembled transversely indefinitely. When the battery cells are connected to the PCB 900 by heat, the size of the battery pack can be freely adjusted .

As described above, the battery pack constructed by the battery cell according to the present invention can theoretically increase the lateral length and the heat of the battery pack indefinitely by assembling the battery cells together. Therefore, the battery pack can be installed in a required amount for machines and devices requiring the capacity of the battery pack, and the heat radiation of the battery cell can be easily performed.

In the present invention, since the plurality of battery units 100 constituting the battery cell 1 and the battery contact surfaces 410 of the heat dissipating member 400 are individually in contact with each other over a large area, 1 and the battery cell 1 can be maximized.

Specifically, in the related art, most of the battery cells and the battery unit configured in the battery pack are positioned in the lateral and the longitudinal direction, and a cooling tube or a cooling plate is inserted between the outside and the side of the battery unit located in the lateral and the row.

However, such a structure corresponds to a local area that is only about one fifth of the total area of the front part of the battery, and the battery part located at the center of the battery pack comes into contact with the cooling tube or the cooling plate more narrowly.

In such a situation, when the battery is heated, the diameter of each battery part is differently expanded. If such expansion is continued, since the structure such as a conventional cooling tube or cooling plate is not formed of an elastic material, State may not be completely restored. As a result, the cooling tube or the cooling plate may not uniformly expand in a previously formed shape, and may not contact the battery part by intention. Therefore, the heat generated in the battery can not be discharged to the outside as intended, so that the life of the battery cell and the battery pack is inevitably reduced.

In contrast, in the battery cell 1 according to the present invention, the heat dissipating member 400 is positioned between the battery units 100 in four units of the battery unit 100, so that each of the battery unit 100 and the heat dissipating member The battery contact surface 410 of the battery 400 is brought into contact with a larger area.

Specifically, in the present invention, four battery units 100 are positioned as one unit in the battery cell 1, two heat dissipating members 400 are partitioned between four battery units 100, and the heat dissipating members 400 The battery contact surface 410 contacts the battery unit 100.

At this time, as shown in FIGS. 5, 8, and 9, the battery contact surface 410 is in contact with about half or more of the surface area of the battery unit 100 on a plane. Accordingly, in the battery pack constructed by the battery cell 1 and the battery cell 1 according to the present invention, the battery contact surface 410 can absorb the heat of the battery unit 100 in a relatively large area than in the prior art, As a result, heat can be further absorbed and heat dissipation can be achieved.

In addition, in the battery cell 1 according to the present invention, since the heat dissipating member 400 is made of an elastic material, even if the diameter of the electrode unit 100 is varied due to heat generation, The effect of absorbing and discharging the heat of the battery unit 100 can be maximized.

Specifically, the diameter of the battery section 1 is expanded while generating heat in accordance with charging and discharging. Due to such swelling, the battery contact surface 410 in contact with the battery part 1 is reduced in accordance with the diameter at which the battery part 1 expands.

The heat dissipation member 400 is made of an elastic material so that the battery contact surface 410 is elastically restored by the elastic restoring force when the diameter of the battery unit 100 is relatively small, The battery contact surface 410 is kept in contact with the battery unit 100. [0052]

At this time, in the conventional cooling structure, the cooling tube or the cooling plate can contact the battery when the diameter of the battery is expanded to the maximum. However, since the expanded cooling tube or the cooling plate has little characteristic to be restored, When the diameter of the branch does not expand to the maximum, there is a possibility that the battery and the cooling tube or the cooling plate are not completely contacted with each other. As a result, heat generated from the battery can not be effectively absorbed and discharged, shortening the service life of the battery cell and the battery pack.

The battery pack 1 including the battery cell 1 and the battery cell 1 according to the present invention can be continuously applied to the battery contact surface 410 even when the diameter of the battery cell 100 is maximized, The heat generated in the battery unit 1 can be effectively absorbed and discharged because the contact with the battery unit 100 is maintained. This has the effect of increasing the service life of the battery pack 1 and the battery pack 1.

In another embodiment of the present invention, the battery contact surface 410 of the heat dissipating member 400 is elastically contacted with the peripheral surface of the battery unit 100 in an arc shape of 180 degrees or more.

FIG. 16 is a cross-sectional view of a main portion for explaining a structure of a heat radiation member according to another embodiment of the present invention, and FIG. 17 is an explanatory view of a structure of a heat radiation member according to still another embodiment. As shown in the figure,

The heat dissipating member 400 includes a battery contact surface 410, a heat transfer surface 420, a heat dissipating member supporting surface 430 and a cooling protrusion member 422 as in the embodiment, Is in contact with the peripheral surface of the battery unit 100 by 180 degrees or more. As shown in FIG. 16, another embodiment of the present invention provides a structure in which the battery contact surface 410 can be in contact with the circumferential surface of the battery part 100 up to 225 degrees.

As the area of contact with the periphery of the battery 100 becomes wider, the heat absorption rate becomes larger. However, if the elastic force is not sufficiently applied, a portion that does not correspond to the thermal expansion and contraction of the battery 100 may be generated.

The heat dissipation member support surface 430 is formed in the other side of the battery contact surface 410 in a direction opposite to the arc shape. When the battery contact surface 410 of the bent portion of the thermoelectric conversion device 420 is referred to as a contact start position 0, the other side end portion of the arc-shaped battery contact surface 410 is in surface contact with the tip of the battery through the angle of 180 degrees, And the heat dissipating member supporting surface 430 is formed to bend the heat dissipating member in the opposite direction at the 225-degree position so as to apply the elastic force.

 When the arc-shaped battery contact surface is formed so as to have a contact angle of 225 degrees as shown in FIG. 16 and the heat dissipating member supporting surface 430 is formed, the position where the elastic member is elastically supported by the heat dissipating member supporting surface 430 is Since the arc shape is formed at the end portion of 225 degrees, a force for pushing the arc-shaped battery contact surface is applied at the end portion of 225 degrees so that it can be more closely attached to the circumferential surface of the battery portion 100. [

On the other hand, as shown in FIG. 17, at one side end and the other side end of the battery contact surface 410, a 315 degree position and a 225 degree position are provided beyond the 180 degree range of the arcuate battery contact surface 410, So that the heat transfer sheet 420 and the heat radiating member supporting surface 430 are formed. The shape of the upper and lower cases of Fig. 16 may be modified so as to accommodate the bending portion of the portion A by deforming into a rectangular shape in the round shape of the corner portion.

As described above, when the arcuate shape of both end portions of the battery contact surface 410 is further extended, and when the arc-shaped battery contact surface 410 is bent and bent to be resiliently supported, A force can be applied and it can be supported flexibly. Therefore, the battery contact surface 410 can be kept in close contact with the peripheral surface of the battery unit 100 in response to deformation such as expansion and contraction of the battery unit 100. As a result, it is possible to increase the contact area while improving the adhesion, thereby improving the heat absorption efficiency.

FIG. 18 is a cross-sectional view of a main part for explaining a structure of a heat radiation member according to still another embodiment of the present invention, and FIG. 19 is a schematic perspective view for explaining a structure of a heat radiation member of FIG. As shown in the figure,

An arc-shaped battery contact surface 410 that surrounds and contacts one circumferential surface of the battery unit 100, a front view 420 that is bent and extended at the battery contact surface 410, and a heat radiating member support surface 430 that is bent at the other end A first heat dissipating member 400 provided,

An arc-shaped battery contact surface 441 that surrounds and contacts the opposite side of the battery 100 in the heat dissipating member 400; a battery contact surface 441 that is bent at one end of the battery contact surface 441, And a second radiation member 440 including a heat conductive member 442 formed to protrude from the other end of the battery contact surface 441 and a heat dissipating member support surface 443 bent at the other end of the battery contact surface 441,

A slit 412 is formed on the bent surface 411 bent from the battery contact surface 410 of the first heat dissipating member 400 to the thermally conductive sheet 420 to form the heat conductive member 440 of the second heat dissipating member 440, And the heat absorbing member 442 is inserted to transmit the heat absorbed by the battery contact surface 441 of the second heat dissipating member to the thermally conductive member 420.

The other end portions of the battery contact surfaces 410 and 441 of the first heat radiation member 400 and the second heat radiation member 440 are spaced apart from each other without contacting each other. This is to prevent the battery part 100 and the battery contact part 410 (441) from falling down due to interference of the expansion and contraction of the battery part 100.

 When the first heat radiation member 400 and the second heat radiation member 440 are installed as described above, since the battery contact portions 410 and 441 are provided on the circumferential surfaces of both sides of the battery unit 100 in contact with each other, Thereby enhancing the heat absorption of the battery 100. The heat absorbed by the battery contact portion 441 of the second heat radiation member 440 is conducted to the heat transfer member 442 and transferred to the heat transfer member 410 of the first heat radiation member 400 which is in contact with the heat transfer member 442, And the heat of the thermoelectric drawing 410 is transferred to the cooling plate through the cooling radiating member 422 to discharge heat of the battery unit 100.

In addition, the first heat dissipating member 400 may be formed as a unitary structure in which two battery contact surfaces are connected to one thermal conductive sheet, and the battery contact surface may have a shape in which the inner side of the arc- But can be configured in any one of them. That is, the structure is such that the battery contact surface of the first radiation member is in contact with the inside of the two adjacent battery units 100 and the battery contact surface of the second radiation member 440 is in contact with the outside of the battery unit, The battery contact surfaces of the first and second heat dissipating members 440 and 440 may be in contact with the outer surfaces of the two battery units 100 and the inner surface of the second heat dissipating member 440 may be in contact with each other.

Therefore, as shown in Figs. 18 and 19, in the structure in which the first heat dissipating member and the second heat dissipating member are provided together, the battery contact surfaces of the battery and the heat dissipating member come in contact with each other at both sides, Is transferred to the thermoelectric conversion unit, and heat is discharged to the cooling plate through the cooling protrusion member, so that the cooling effect of the battery unit can be enhanced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And additions should be considered as falling within the scope of the claims of the present invention.

<Battery cell>
1: Battery cell
100: Whole branch
200: upper case
210:
220: heat radiating member engaging portion
221: Clasp ring
230: slit
300: Lower case
310: Battery mounting part
320: heat radiating member engaging portion
321: Clasp ring
330: Slit
340: inner side
400: heat dissipating member
410: Battery contact surface
411: Bending face
412: Slit
420: thermoelectric drawing
421: Case coupling slit
422: cooling protrusion member
430: heat radiating member supporting surface
440: second radiation member
441: Battery contact surface
442: heat conduction piece
443: Radiating member supporting surface
500: air passage
<Battery pack>
600: first battery cell
610: Hook
620:
630: Case protrusion
640: cooling protrusion member
700: Second battery cell
710:
720: Support
730: Screw connection groove
740: Case protrusion
750: cooling protrusion member
800: Third battery cell
810: Hook
820: Screw connection groove
830: Case protrusion
840: cooling protrusion member
900: PCB
910: Screw-through groove
920: Case penetration groove
930: Heat dissipating member penetrating groove
940: convex area
2: Assembly screw

Claims (12)

1. A battery cooling apparatus for cooling a heat generated in a battery unit by providing a cooling plate in a battery unit in which a plurality of battery units are arranged,
And a heat dissipating member contacting the battery unit to absorb heat and transfer the absorbed heat to the cooling plate,
The heat-
A battery contact surface which is made of an elastic material and closely contacts the circumferential surface of the battery in a circular arc shape of 180 degrees or more to absorb the heat of the battery unit;
A thermally conductive pattern that is bent at one side end of the battery contact surface to conduct heat absorbed by the battery contact surface; And
And a cooling protruding member extending from the thermoelectric conversion unit and transmitting the heat of the thermoelectric conversion unit to a cooling plate.
The heat sink according to claim 1,
Wherein the heat dissipating member support surfaces of the heat transfer member and the heat dissipation member support surfaces of the neighboring battery unit are elastically contacted with each other.
The heat sink according to claim 1,
A pair of battery contact surfaces contacting the circumferential surface of the battery unit,
Wherein one side end portion of each of the pair of battery contact surfaces is bent and integrated to form a single thermally conductive member.
The battery pack according to claim 3, wherein the pair of battery contact surfaces
The battery cooling apparatus according to any one of claims 1 to 3, wherein the battery cooling device is formed in an arcuate shape that is directed from the inside to the outside between two adjacent battery parts or is formed in an arc shape directed from the outside to the inside.
The cooling device according to claim 1,
And a cooling plate protruding from the upper and lower ends of the thermoelectric conversion unit and extending through upper and lower surfaces of the PCB to be connected to a cooling plate disposed on the outer side of the PCB to transmit the heat of the PCB to the cooling plate. Battery cooling unit.
The battery cooling apparatus according to claim 1,
An upper case having a battery seating part on which a plurality of battery parts can be seated on a predetermined area and having a heat radiating member engaging part on one side;
A lower case having a battery receiving portion capable of receiving a lower portion of the battery unit in the same area as the upper case and having a heat radiating member coupling portion at one side; Further comprising:
The heat-
Wherein the battery case is located between the upper case and the lower case based on a material of elasticity, and is coupled to the radiating member coupling part.
7. The battery cooling apparatus according to claim 6,
A battery cell including the upper case, the lower case, and the heat radiation member,
A plurality of battery cells are arranged and electrically connected to the cathode and the anode of the battery unit on the upper and lower surfaces thereof to provide a PCB for power input / output,
A cooling plate is provided on the upper and lower surfaces of the upper and lower PCBs, respectively,
Wherein the cooling protrusions of the heat dissipating members included in the battery cell penetrate the PCB and are coupled to the cooling plate to discharge the heat of the battery unit to the cooling plate.
A cooling plate is installed in a battery device in which a plurality of battery units are arranged and a heat dissipating member for absorbing heat is provided in contact with each of the battery units to transfer heat absorbed by the battery to the cooling plate, A battery cooling apparatus for cooling an apparatus,
The heat-
A battery contact surface which is made of an elastic material and which is brought into close contact with the circumferential surface of the battery in a circular arc shape to absorb heat of the battery;
A heat transfer diagram in which the heat absorbed by the battery contact surface is transferred by being bent at one side end of the battery contact surface;
A cooling protrusion member extending from the thermoelectric conversion unit and transmitting the heat of the thermoelectric conversion unit to the cooling plate;
A heat dissipating member supporting surface for bending the other side end of the battery contact surface in an arc-shaped opposite direction to elastically contact the adjacent heat dissipating member; And a control unit
Wherein the battery contact surface comprises:
And both side end portions of the imaginary center line passing through the center of the cross section of the electric charge section at right angles to the thermoelectric drawing are further extended in an arc shape from 0 to 180 degrees, And a heat dissipating member supporting surface is formed on the heat dissipation member supporting surface.
9. The battery pack according to claim 8, wherein one side end and the other side end of the battery contact surface
Is contacted with the circumferential surface of the battery part from 0 degrees to 225 degrees and from 335 degrees to 0 degrees with respect to the virtual center line of the cross section of the battery part.
The heat sink according to claim 8,
A pair of battery contact surfaces contacting the circumferential surface of the battery unit,
Wherein one side end portion of each of the pair of battery contact surfaces is bent and integrated to form a single thermally conductive member.
9. The battery pack according to claim 8, wherein the pair of battery contact surfaces
The battery cooling apparatus according to any one of claims 1 to 3, wherein the battery cooling device is formed in an arcuate shape that is directed from the inside to the outside between two adjacent battery parts or is formed in an arc shape directed from the outside to the inside.
In an electric vehicle provided with a battery cooling device,
An electric vehicle having the battery cooling device according to any one of claims 1 to 11.

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