Art
[1]The present invention relates to a battery pack, and more particularly, to a battery pack having a drainage structure for preventing space-effective structure for mounting the battery module and the inflow of the cooling water leakage of the battery module. This application claims priority to an application for the Korea Patent Application No. 10-2017-0043912, filed on April 04, dated 2017, all information disclosed in the specification and drawings of that application is hereby incorporated by reference into this application.
BACKGROUND
[2]
Secondary batteries, unlike primary batteries that can not be charged, charge and discharge are as referring to possible cell, cell phone, PDA, as well as a small state-of-the-art electronic apparatus field such as a laptop computer, an energy storage system (ESS), an electric vehicle (EV) or It has been used as a power source for a hybrid vehicle (HEV).
[3]
Type of secondary battery is now widely used, there are lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries. Operating voltage of this unit secondary battery cells, that is, the unit battery cell is about 2.5V ~ 4.2V. Thus, more than if the required high output voltage by connecting a plurality of battery cells in series and also configure the battery pack. In addition, the parallel connection of a plurality of battery cells in accordance with the charge-discharge capacity required for the battery pack, and also configure the battery pack. Therefore, the number of battery cells included in the battery pack may be variously set according to the output voltage required, or charge-discharge capacity.
[4]
For example, when configuring the battery pack by connecting a plurality of battery cells in series / parallel, constituting the battery pack first configuration a plurality of battery cells comprising the battery module, and using such a plurality of battery modules in addition to other components, this is a general way. That is, the battery modules may be that a plurality of secondary batteries are meant the components connected in series to parallel, and the battery pack, a plurality of battery modules to increase, such as capacity and output means the components are connected in series to parallel.
[5]
On the other hand, the battery pack of such a multi-module battery structure, it is important to easily dissipate heat generated by each battery module. The heat of the battery module, called out by the charge-discharge procedure is not effectively removed, the heat accumulation is taking place as a result deterioration of the battery module to facilitate, in some cases, may cause a fire or explosion. Therefore, the battery pack has a high-output, large-capacity is needed is a cooling device for cooling a battery module that is embedded in it.
[6]
Typically cooling system of the battery pack may in a typical air-cooled and water-cooled, two, the less noise than air-cooled excellent cooling performance reasons, the high water-cooled more affinity. For example water-cooled cooling is brought into contact with a heat sink including a flow passage to flow the cooling water when the battery module or the side is done in such a manner as to absorb heat from the battery modules.
[7]
However, if the case of a battery pack employing liquid cooled heat sink cooling system damage coolant is introduced into the battery module may increase the risk of leakage. Further, even in a water well is made, if the battery module is to be left for a long time inside a sealed battery pack with the case that the cooling water is deceased state humidity in the pack case very high, no potential leakage resulting eopji.
[8]
Further, in the case of an electric vehicle, unexpected operation of the shock and vibration can be applied to the battery pack. In this case, cut off the electrical connection between the battery module, or may cause a deformation of the pack case, which support the battery modules. Therefore, especially for the electric vehicle battery pack has enough durability against external shock and vibration is required. The crash beam (Crash beam) to the solution is also used to increase the mechanical rigidity of the battery pack. The crash beam is installed in a tray constituting a battery pack case it means that the beam shape of the structure to increase the rigidity of the tray. This tray is installed crash beam does not occur becomes high, the impact resistance is deformed to an external impact or vibration easily.
[9]
However, if you install a beam crash, but the mechanical strength of the battery pack better and less much space to mount the battery module. In addition, adding more essential cooling system components such as the heat sink, there is a problem that the low floor area ratio to the energy density of a battery pack that contains it.
Detailed Description of the Invention
SUMMARY
[10]
The present invention, as designed to solve the above problems, have a good resistance to external shock and vibration can be stored in the battery modules and the cooling unit with a space-efficient, and drained in case the coolant leaks structure It aims to provide a battery pack equipped.
[11]
It may be understood by the following description of Other objects and advantages of the present invention will be appreciated more clearly by the embodiment of the present invention. Also, the objects and advantages of the invention will be readily appreciated that this can be realized by the means as claimed and combinations thereof.
Problem solving means
[12]
In order to solve the above object, the battery pack according to the present invention includes a plurality of battery modules; Trays are placed to provide the plurality of battery modules space; It is provided so as to cross the top surface of the tray, a plurality of frame beams defining a space that can be positioned in the plurality of battery modules individually; And the cooling water is formed as a hollow structure capable of flow, and each includes a plurality of heat sinks that are selectively coupled to a portion of the plurality of the beam-frame so as to be disposed opposite to each of the side portions of the battery module, and the tray the frame beam has a drain hole in the perforated form the lower direction may be provided for each of the heat sink.
[13]
A lower portion of the heat sink may be formed of a multiple of the concave shape.
[14]
The drain can be placed to a plurality of predetermined intervals provided along the watercourses.
[15]
The multiple may be inclined at least in one direction.
[16]
Some of the plurality of beam frames is the beam-frame type I, the heat sink may be enabled attached to the indentations formed in both said columns arranged by the column to form the height of the I-beam frame.
[17]
The heat sink is arranged to be shaped to fit the recessed portion is bonded to the heat-conductive adhesive it may be integrated with the I-beam frame.
[18]
Such that the plurality of battery modules are arranged in a 2 × N matrix, and some other of the plurality of beam frame is a center frame of crossing the center of the tray, the I-beam frame crossing for each of the center frame It may be arranged at equal intervals on the tray.
[19]
Each of the heat sink may be a refrigerant inlet and outlet are an inlet and an outlet is provided at the one end and the other end, installed to pass through the center frame traversed the upper surface of the tray along said I-beam frame.
[20]
And a pack cover that covers an upper portion of the tray, further comprising: two side frames that each cover both side portions of the tray, the two side frames are manifold tube is connected in communication with the inlet and outlet of the heat sink provided in the form it is possible to form the supply and discharge passage of the refrigerant.
[21]
The center frame may be provided a connecting module for providing a gakgwan form is provided with a plurality of holes on the outer surface and the interior of the center frame is connected to at least one form of the series and in parallel the plurality of battery modules .
[22]
Some of the plurality of the beam frame are hollow square beam frame, the heat sink may be located in the interior of the rectangular beam frame.
[23]
A thermally conductive medium interposed thermal interface between the heat sink and the battery module may further include.
[24]
The thermally conductive medium is provided with a projection that is perpendicular to the projection formed on the printing plate and the printing plate is attached to one surface of the heat sink, the projection can receive the external force to have the physical properties that cause the elastic deformation.
[25]
The heat transfer medium may be provided with a silicone rubber.
[26]
According to another aspect of the invention, there may be provided an automobile comprising the above-mentioned battery pack. The vehicle may include an electric vehicle (EV) or a hybrid vehicle (HEV).
Effects of the Invention
[27]
According to an aspect of the invention, by combining the beam frame and the heat sink in a space-efficient, and may increase the stiffness and the floor area ratio of the battery pack, it is possible to compactly build the cooling configuration for each battery module.
[28]
Further, according to another aspect of the present invention, by providing a multiple structure in such a beam frame and the tray can be discharged easily even if the water coolant leak in the heat sink to the external battery pack.
Brief Description of the Drawings
[29]
1 is a schematic perspective view of a battery pack according to an embodiment of the present invention.
[30]
Figure 2 is an exploded perspective view of Figure 1;
[31]
Figure 3 is a perspective view of the tray with a plurality of battery modules of FIG.
[32]
Figure 4 is a diagram illustrating a multiple of drain and a portion of the battery pack according to an embodiment of the present invention.
[33]
Figure 5 is an enlarged view of region A of FIG.
[34]
Figure 6 is a cross-sectional view taken along the II 'line of Fig.
[35]
7 is an enlarged view of region B of FIG.
[36]
8 is a view according to a modified example of the beam frame of FIG.
[37]
9 and 10 are diagrams illustrating the heat transfer medium and the entire contact between the battery module to / from the state after the battery pack according to another embodiment of the present invention.
Mode for the Invention
[38]
The invention will be more apparent by describing in detail a preferred embodiment of the present invention with reference to the accompanying drawings. Embodiment described herein examples are illustrative as shown for better understanding of the invention, the invention is to be understood that the same may be practiced with different embodiments and various modifications described herein. Further, the appended drawings are not illustrated to scale it can be shown to be the dimensions of some of the components exaggerated for a better understanding of the invention.
[39]
That is, the exemplary configuration shown in the examples and figures disclosed herein are in not intended to limit the scope of the present merely nothing but the embodiment most preferred embodiment of the present invention invention, a variety that can be made thereto according to the present application point It should be understood that there are equivalents and modifications.
[40]
1 is a schematic perspective view of a battery pack according to an embodiment of the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is a perspective view of the mounting tray, a plurality of the battery module of Figure 2, and Figure 4 is the invention be a multiple of the battery pack according to the embodiment of 710 and the drain 720 is a view showing a portion.
[41]
Referring first to Figures 1 and 2, the battery pack 10 according to an embodiment of the present invention, includes a plurality of pack case that houses the battery module 100, battery module 100. Wherein the pack case includes a plurality of battery module 100 to the tray 200 to provide a lying area, pack cover 300 for housing the package a plurality of battery module 100 with the tray 200, 2 It may be of a single side frame 400.
[42]
Battery module 100 has a plurality of the battery cells are stacked, else it may include various components. For example, the battery cell may be formed of a pouch type secondary battery, it is provided with a plurality pieces can be connected electrically to each other.
[43]
Each battery cell, not shown in the drawing, the electrode assembly, are projecting out of the battery case and the battery case for accommodating the electrode assembly can include various components, such as electrode lead which is connected to the electrode assembly and electrically. Electrode lead may include a positive electrode lead and negative electrode lead, a positive electrode lead is connected to the positive electrode plate of the electrode assembly, the negative electrode lead may be connected to the negative electrode plate of the electrode assembly.
[44]
The battery module 100 may further include stacking and for stacking and protects the pouch type secondary battery frame, the module end plate.
[45]
Stacking frame for is configured to be held by a secondary battery as a means for stacking the secondary battery to prevent its flow and, between the cross-laminate and serves to guide the assembly of the secondary battery. For reference, the stack frame for a may be replaced with other various terms, such as a cell cover or cartridge (cartridge).
[46]
Module end plate as a component for protecting and fixing the battery cell stack, surrounding the outside of the battery cell stack pads on at least one surface of the prismatic structures or the battery cell stack, which may refer to plate-shaped structure. Module end plate is preferably made of a metallic material is excellent high mechanical stiffness, thermal conductivity.
[47]
Although not illustrated in the drawing for convenience, the battery module 100 may further include a cooling fin which is interposed between the battery cells. Cooling pin could have a role as a thin member having a thermal conductivity, such as aluminum, the end portion is extended to the outside connected to the other heat absorbing medium such as for example, the heat sink 600 and transfer heat from the battery cells to the outside have.
[48]
Thus, the battery module 100 may refer to an aggregate consisting of a number of other components for collection or stacking and protects the plurality of battery cells, and those consisting of the battery cells. And can be referred to the battery pack 10 of the present invention is configured to aggregate comprising such battery module unit 100. The
[49]
2 to 3, the battery pack 10 according to this embodiment is configured with a total of 10 units of the battery module 100, each unit battery module 100 is a tray with 2 × 5 matrix of is mounted on the upper surface of (200), it may be packaged by a pack cover 300 and the two side frame 400.
[50]
The tray 200 and the pack cover 300 may be of a plate shape having a substantially larger area, each is located at the bottom and the top of the battery module 100 to cover the bottom and the top of the battery module 100 can. And two side frames 400 are positioned on both sides of the tray 200 may cover both side portions of the battery module 100.
[51]
In particular, the two side frame 400 according to this embodiment may be provided in the form of a manifold pipe. To be more specific with reference to FIG. 2, two side frame 400 is formed with a passage for a pipe part in the inside, the inlet of the outside of the inlet 410 or outlet 420 and the heat sink 600 to be explained later 610 and has a structure having a plurality of connection ports (430) which can be connected respectively to the outlet (Fig. located on the other side of the inlet in Fig. 2). The two side frame 400 serves to raise the flow rate distribution in the flow rate of the heat sink 600, or from heat sink 600. That is, the two side frame 400, yet the configuration of the pack case and at the same time it the component that forms the supply and exhaust path of the refrigerant to the outside of the battery pack 10.
[52]
Protection from such a pack case, or tray 200, a pack cover 300, and two side frame 400 includes a battery module 100 provides mechanical force for, and the external of the battery module 100, the impact etc. It may serve to. Thus, the tray 200, a pack cover 300 and the two side frames 400 that make up the pack case may be made of metal such as steel so as to be rigid secured.
[53]
When the battery pack 10 according to the present invention, mainly with reference to FIGS. 3-6, and a plurality of beam-frame which is provided to traverse the upper surface of the tray defining a space that can be positioned in a number of battery modules individually, and forming a hollow structure in which cooling water can flow, and each includes a plurality of heat sinks that are selectively coupled to a portion of the plurality of the beam-frame so as to be disposed opposite to each of the side portions of the battery module.
[54]
In the case of this embodiment, some of the plurality of frame beams are provided with I-beam frame 510, and the other part is provided to the beam frame of gakgwan form. It shall hereinafter refer to the beam frame of gakgwan form the center frame.
[55]
More In detail, the case of this embodiment, as shown in FIG. 3, 6 I-beam frame 510 along the longitudinal direction (X axis direction) of the tray 200 can be disposed at equal intervals, respectively, and a center frame is 520, this can be crossed and arranged traversed the center of the tray 200 for the type 6 I-beam frame 510. The two distance between I-beam frame 510 corresponds to the width of the unit of the battery module 100, the height of the I-beam frame 510 to be formed equal to the height of the battery module 100 or higher can. Thus, tray 200 has a total of 10 units of the battery module 100, the second portion of the individual compartments can be mounted in a matrix format × 5 can be formed on.
[56]
Each unit of the battery module 100 is the module electrode terminals 110 are to face the center frame 520 may be secured to the respective compartments. At this time, the unit of the battery module 100 may be supported on both sides stop the flow by means of two I-beam frame 510.
[57]
Although not shown in detail for convenience, and may be provided with a plurality of holes 521 has an outer surface in the longitudinal direction (X axis direction) of the center frame 520. And the center frame 520 may be provided inside of the connecting module (not shown).
[58]
Battery module unit 100 of each column is two per module electrode terminal 110 are opposite to each other and inserted into the hole 521 of the center frame 520 may be connected to the connecting module.
[59]
Connecting the module to form a series and / or parallel network and can be composed of bus bars made of electrically conductive material. The connecting module can be connected to a plurality of battery module 100 to the at least one form of the series and parallel. In addition, the connecting module can be coupled to the battery pack 10, the terminal tab 11 located on the front outer side of the tray 200, the terminal tab 11 can be connected outside the battery pack 10 to another device and the electrical have.
[60]
The battery module 100 of the 2 × N matrix array structure and such, according to the configuration of the I-beam frame 510 and the center frame 520, it is possible to facilitate position fixing and mounting of the battery module 100 , as well as it is possible to increase the mechanical rigidity of the tray 200. Further, it is possible to ease the handling of the wiring structure with little exposure to the high-voltage cable or the like on the tray 200. Accordingly, it is possible to improve the safety and the space utilization of the battery pack 10.
[61]
If the I-beam frame 510 according to the present invention, with reference to Figure 5, the center of the tray 200 by the top end 511 parallel to the upper surface and the lower end 513 and upper end 511 and lower end 513 the vertical connection consists of a column with 512 forming a height of the I-beam frame 510.
[62]
I-beam frame 510 takes the form of food by the upper end 511 and lower end 513. The space between the column (512). Hereinafter in this specification will be the divided space, that is defined as a column 512, indentations 514 a space is formed on either side. A heat sink 600 is mounted on the recess portion 514 of this I-beam-type frame (510). The heat sink 600 may refer to an object that absorbs and dissipates heat from another object by a thermal contact.
[63]
To be more specific, the heat sink 600 in accordance with the invention are manufactured to be shaped alignment in indentations 514 of the I-beam frame 510, respectively, the cooling water inlet and an inlet 610 flowing out of the outlet end and located on the other end comprises a hollow structure including a passage therein. Each heat sink 600 may be extending through the center frame 520 at one end side to the other side of the tray 200 along the respective I-beam frame 510.
[64]
The refrigerant flowing through the inner channel heat sink 600 flows in the flow path to facilitate cooling capability is excellent fluid particularly limited but, for example, be water, which can increase the latent heat maximize cooling efficiency.
[65]
The heat sink 600 may be integrated with the I-beam frame 510. For example, the heat sink 600 to put buthi the method after applying the heat-conductive adhesive on the inner surface of the I-beam frame 510, a heat sink 600, the indentations 514 of the I-beam frame 510 and the I-beam frame 510 may simply be integrated. In this case, the space utilization, the tray 200 than the heat sink 600, if provided in a separate location can be increased.
[66]
That is, between one of the I-beam frame 510, two heat sinks 600 to form the combined I-beam frame 510 as the battery pack 10 of the present invention is shown in Fig. 7 the full battery module unit 100, the space can be utilized as a space that can be separately mounted, it is possible to discharge the heat generated in each battery module 100 in the both side portions of the battery module 100. Further, the heat sink 600, so to be made of the cooling of the I-beam frame 510 by be to prevent deformation due to temperature rise of the I-beam frame 510 got more effectively catch the heat of the overall battery pack structure can.
[67]
In addition, the battery pack 10 according to the present invention may further comprise a drain 710 and the drain 710, drain 720 is provided at equal intervals along a lower portion formed on the heat sink (600). Drain 710 and the drain 720 are components for discharging the leaked coolant is the heat sink 600, damage to the external battery pack (10).
[68]
Referring again primarily to FIG. 4 to FIG. 5, a multiple unit 710 according to this embodiment can be formed in the lower end 513 of the I-beam frame. For example, it fabricated in the form binary concavely round the lower end 513 of the I-beam frame to form a multiple of 710. Such a multiple 710 may be inclined at least in one direction. Although not in detail shown, for example, a multiple (710) may be formed into a shape inclined toward the other end from one end of the formed or in the form binary toward the both ends inclined in a centered position on the tray 200, or the tray 200 have.
[69]
Drain 720 with a predetermined interval along this drain 710 may be provided a number found. For example, for each particular position of the lower end portion 513 and the tray 200 of the I-beam frame taking the tap (tap), it is possible to form the shape of the drain port 720 is perforated in the vertical direction.
[70]
Drain 710 and the drain 720 may be provided with the same pattern on the tray 600 in the position with the I-beam frame 510, each with a heat sink 600 is located.
[71]
According to such a multiple of 710 and a drain 720 configured, when cooling water leaks from the heat sink 600, cooling water is riding a wall surface of the heat sink 600 can collect on the recessed area of ​​the down drain 710 to flow . So late leakage liquid can be discharged down the tray 200 through the nearest drain hole 720 flows along the inclined drain (710). In general, as the battery pack for electric vehicles, in consideration of the fact the battery pack is mounted to the lower chassis of the vehicle, the cooling water discharged from the bottom tray 200 of the battery pack may be dropped directly into most ground.
[72]
In this way it provided a drainage structure for a battery pack can be, even if the coolant leaks from the heat sink 600, cooling water flowing to the outside the battery pack 10 can be removed a short circuit risk.
[73]
Next, with reference to Fig. 8, description will be made on a multiple structure in accordance with this modification of the beam-frame in the present embodiment. Modification of the present invention to be described below may be referred to as the configuration corresponding to Figure 7 as compared with the foregoing embodiments. The same reference numerals denote the same elements, and duplicate description of the same members will be omitted.
[74]
This modification is of a hollow square beam frame (510 ') as an alternative to the example I-beam frame 510 of the above embodiment. And a heat sink (600) within the rectangular beam frame (510 ') is configured to be positioned. In this case, since the heat sink 600 located within the rectangular beam frame (510 ') can improve the space utilization in the tray 200. Drain 710 and the drain 720 is similar to the above-described embodiments. I.e., it may be a plurality of drain 720 in the longitudinal direction of the rectangular beam frame (510 ') the concave drain 710 is formed, and the drain 710 in the bottom of the form.
[75]
On the other hand, although separate the rectangular frame beam (510 ') and the heat sink 600. In the above description constitutively, for example, a hollow to create a flow path in the hollow rectangular beam frame. This allows you to use the prismatic beam frame itself as a heat sink purposes. In this case, the rectangular beam frame may refer to a structure and wherein the heat sink means to the cooling water flowing in the rectangular frame beam inside the flow path. And drain 710, and drain 720 could be provided at a position of the rectangular beam frame (510 '), the tray 200 is located.
[76]
9 and 10 are diagrams illustrating the heat transfer medium and the entire contact between the battery module to / from the state after the battery pack according to another embodiment of the present invention.
[77]
The battery pack according to another embodiment of the present invention may further comprise a heat transfer medium (800) interposed thermal interface between the heat sink 600 and the battery module 100.
[78]
Heat transfer medium 800 may maeul the clearance between battery modules 100 and the heat sink 600, if a thin member having a thermal conductivity has a thickness and the structure of the That may not be particularly limited. Can be used, for example, a sheet-like plate of metal material. The metal material, but among the thermal conductivity of the lightweight aluminum or an aluminum alloy can be high and the metal, but is not limited to these. Such as copper, can be gold, silver is. Ceramic materials are also possible, such as aluminum nitride, silicon carbide other than the metal.
[79]
In particular, the heat transfer medium 800 according to another embodiment of the present invention can include a protrusion formed protruding portion 820 perpendicularly to the plate surface 810, and the printing plate 810 is attached to one surface of the heat sink 600 have. The projection 820 may be formed to receive the external force having a property that causes the elastic deformation, such as silicone rubber (silicone rubber). Silicone rubber has the properties that can cause an elastic deformation and excellent in heat conductivity and heat radiation.
[80]
As an alternative to the silicone rubber may be a carbon flakes (flake), or a highly conductive metal flakes (flake) the filling FIG rubber (rubber) within the solution mixture flow is applied.
[81]
This heat transfer medium 800 when seated in the housing space between the I-beam frame 510 from top to bottom, a unit battery module 100, the protrusion 820, 10, the battery module pressed against the side surface (100) takes the form of the bent downward. At this time, the heat transfer medium 800 is protrusion 820 is due to its elastic restoring force to return to the circle to be strongly in contact with the side surface of the battery module 100. Therefore, when the unit battery modules 100 is inserted into the storage space, the so that each holding the thermal medium in close contact with the (800) as above, the left and right side surface portion of the battery module 100 from the battery module 100 includes heat heat the sink 600 can be smoothly transported.
[82]
Further, this heat transfer medium 800 may serve to hold a battery module 100. In other words the protrusions 820, even if the external impact to the battery pack 10 is applied, because it acts to hold the battery module 100, the battery module (100 of the battery module 2 heat transfer medium (800) on both side portions of 100 because) of the flow stop may prevent the clearance formed between the battery modules 100 and the heat sink (600).
[83]
As described above, according to the configuration of the present invention can increase the stiffness of the floor area ratio and the battery pack 10 can be compactly configured to implement cooling of the individual battery modules (100). Further, by using the heat transfer medium (800) of the elastically deformable protruding shape can enhance the contact force of each battery module 100 to the heat sink 600. Accordingly, not only the cooling efficiency can be improved as well in an impact or shaking the individual battery module 100, it may be supported in a stable manner.
[84]
On the other hand, the battery pack according to an embodiment of the present invention can further include a variety of devices (not shown), for example (Battery Management System) BMS for controlling the charging and discharging of the battery modules, a current sensor, a fuse or the like.
[85]
Vehicles according to the invention, it may include a battery pack according to the present invention; The battery pack may also be applied or the like, as well as be applied to cars such as electric cars and hybrid cars IT family.
[86]
Or more, although shown and described for the preferred embodiment of the invention, the invention is not limited to the preferred embodiment of the above-mentioned specific, in the art the art without departing from the subject matter of the present invention invention claimed in the claims those of ordinary skill, and not to can be readily applied to other types of embodiment, of course, that such changes are within the scope of the claims described.

Claims
[Claim 1]A plurality of battery modules; Trays are placed to provide the plurality of battery modules space; It is provided so as to cross the top surface of the tray, a plurality of frame beams defining a space that can be positioned in the plurality of battery modules individually; And the cooling water is formed as a hollow structure capable of flow, and each includes a plurality of heat sinks that are selectively coupled to a portion of the plurality of the beam-frame so as to be disposed opposite to each of the side portions of the battery module, and the tray the beam frame, the battery pack characterized in that the drain hole of the perforated form to the lower direction provided for each of the heat sink.
[Claim 2]The method of claim 1, wherein the lower portion of the heat sink, the battery pack being formed is a multiple of the concave shape.
[Claim 3]The method of claim 2, wherein the drain of the battery pack, characterized in that with a plurality of a predetermined spacing is provided along the watercourses.
[Claim 4]4. The method of claim 3 wherein the multiple of the battery pack, characterized in that the inclined, at least in one direction.
[Claim 5]The method of claim 1, wherein a portion of the plurality of the beam frames is the beam-frame type I, the heat sink can be attached to the indentations formed in both said columns based on the column to form the height of the I-beam frame battery pack, characterized in that it is provided.
[Claim 6]The method of claim 5, wherein the heat sink includes a battery pack, characterized in that is provided to be custom shaped to the recess portion are adhered to the heat conductive adhesive to be integrated with the I-beam frame.
[Claim 7]6. The method of claim 5, so as to be arranged to have 2 × N matrix of the plurality of battery modules, and some other of the plurality of beam frame is a center frame of crossing the center of the tray, the I-beam frame and wherein each intersecting the center frame and a battery pack that is arranged at equal intervals on the tray.
[Claim 8]The method of claim 7, wherein each of said heat sink coolant is provided at the inlet and the one end and the other end inlet and an outlet that exits, to penetrate through the center frame traversed the upper surface of the tray along said I-beam frame installation the battery pack characterized in that the.
[Claim 9]The method of claim 8, further including two side frames that each cover a pack cover and both side portions of the tray to cover the upper portion of the tray, the two side frames are in communication with the inlet and outlet of the heat sink It is provided in the form of a manifold pipe which is connected to the battery pack so as to form a supply and exhaust path of the refrigerant.
[Claim 10]The method of claim 7, wherein the center frame is connecting to establish a gakgwan form is provided with a plurality of holes on the outer surface and the interior of the center frame is connected to at least one form of the series and in parallel the plurality of battery modules battery pack, characterized in that the module is provided.
[Claim 11]The method of claim 1, wherein a portion of the plurality of the beam frame are hollow square beam frame, the heat sink is a battery pack, characterized in that positioned in the interior of the rectangular beam frame.
[Claim 12]The method of claim 1, wherein the battery pack further comprising a thermally conductive medium interposed thermal interface between the heat sink and the battery module.
[Claim 13]The method of claim 12, wherein the heat transfer medium is provided with a projection that is perpendicular to the projection formed on the printing plate and the printing plate is attached to one surface of the heat sink, the projections are characterized by having physical properties When the external force causing the elastic deformation battery pack.
[Claim 14]The method of claim 13, wherein the battery pack, characterized in that the heat transfer medium is provided with a silicone rubber.
[Claim 15]Any one of claims 1 to 14, an electric vehicle comprising a battery pack according to any one of items.