Title of Invention: Battery Pack and Vehicle Including Such Battery Pack
Technical field
[One]
The present invention relates to a battery pack and a vehicle including such a battery pack.
[2]
This application is an application for claiming priority for Korean Patent Application No. 10-2018-0112332 filed on September 19, 2018, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.
Background
[3]
Rechargeable batteries with high ease of application and high energy density according to product group are not only portable devices, but also electric vehicles (EVs) or hybrid vehicles (HEVs) driven by an electric drive source. It is universally applied. Such a secondary battery is attracting attention as a new energy source for eco-friendly and energy efficiency improvement in that it does not generate by-products from the use of energy as well as the primary advantage of being able to drastically reduce the use of fossil fuels.
[4]
Currently widely used types of secondary batteries include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydride batteries, and nickel zinc batteries. The operating voltage of such a unit secondary battery cell, that is, a unit battery cell, is about 2.5V to 4.5V. Therefore, when a higher output voltage is required, a battery pack may be configured by connecting a plurality of battery cells in series. In addition, a battery pack may be configured by connecting a plurality of battery cells in parallel according to the charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack may be variously set according to a required output voltage or charge/discharge capacity.
[5]
Meanwhile, when configuring a battery pack by connecting a plurality of battery cells in series/parallel, a battery module including at least one battery cell is first configured, and other components are added using at least one battery module. It is common to construct a battery pack.
[6]
In the case of a conventional battery pack, in recent years, demands from consumers for a battery pack having a high energy density having a slimmer and more compact size as well as having a high capacity are increasing. In the case of manufacturing a battery pack for realizing such a high energy density, since more battery cells are required, the assembly process may be complicated, and thus improvement is also required in terms of process efficiency.
[7]
Therefore, there is a need for a method for providing a battery pack capable of increasing assembly process efficiency while implementing a high energy density, and a vehicle including the battery pack.
Detailed description of the invention
Technical challenge
[8]
Accordingly, an object of the present invention is to provide a battery pack capable of increasing assembly process efficiency while implementing a high energy density, and a vehicle including the battery pack.
[9]
Another object of the present invention is to provide a battery pack capable of improving cooling performance and a vehicle including the battery pack.
[10]
In addition, another object of the present invention is to provide a battery pack capable of buffering an external shock or the like, and a vehicle including the battery pack.
Means of solving the task
[11]
In order to solve the above object, the present invention provides a battery pack, comprising: a plurality of battery cells; A pack case provided with accommodating spaces for at least partially dividing and accommodating the plurality of battery cells; A cooling mat disposed in contact with upper surfaces of the plurality of battery cells within the pack case; And an air cushion disposed perpendicular to the cooling mat and mounted on an inner wall of the pack case in a front-rear direction.
[12]
The pack case may include a base plate; A front plate mounted in front of the base plate; A rear plate disposed opposite the front plate and mounted on a rear side of the base plate; A pair of side plates mounted on the base plate to be provided between the rear plate and the front plate, and spaced apart from each other by a predetermined distance along the width direction of the base plate; And a partition plate that divides between the pair of side plates to form the accommodation space, and is provided between the front plate and the rear plate in a front-rear direction of the base plate.
[13]
The cooling mat may include a mat body in contact with upper surfaces of the plurality of battery cells; And a cooling channel formed in the mat body and through which cooling water for cooling the plurality of battery cells flows.
[14]
The mat body may be made of a rubber material.
[15]
The mat body may be filled with air so as to buffer an external shock or the like.
[16]
The mat body may be provided with an air inlet for injecting the air.
[17]
The mat body may be provided with a venting hole unit for discharging the air when a predetermined pressure or more is applied.
[18]
The air cushion may be provided with an air inlet capable of filling a predetermined air therein.
[19]
The air cushion may be provided with a venting hole unit for discharging the air when the pressure is higher than a predetermined pressure.
[20]
The air cushion may be made of a rubber material.
[21]
In addition, the present invention provides a vehicle, comprising: at least one battery pack according to the above-described embodiments.
Effects of the Invention
[22]
According to various embodiments as described above, a battery pack capable of improving assembly process efficiency while implementing a high energy density, and a vehicle including the battery pack may be provided.
[23]
In addition, according to various embodiments as described above, a battery pack capable of improving cooling performance and a vehicle including the battery pack may be provided.
[24]
In addition, according to various embodiments as described above, a battery pack capable of buffering an external shock or the like and a vehicle including the battery pack may be provided.
Brief description of the drawing
[25]
The following drawings appended to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of ​​the present invention together with the detailed description of the present invention, which will be described later. It is limited to and should not be interpreted.
[26]
1 is a view for explaining a battery pack according to an embodiment of the present invention.
[27]
2 is an exploded perspective view of the battery pack of FIG. 1.
[28]
3 is a diagram illustrating a pack case of the battery pack of FIG. 2.
[29]
4 is a view for explaining the cooling mat of FIG. 2.
[30]
5 to 7 are views for explaining a main part of the cooling mat of FIG. 4.
[31]
8 is a view for explaining the air cushion of FIG. 2.
[32]
9 is a view for explaining a vehicle according to an embodiment of the present invention.
Mode for carrying out the invention
[33]
The present invention will become more apparent by describing in detail a preferred embodiment of the present invention with reference to the accompanying drawings. The embodiments described herein are illustratively shown to aid understanding of the invention, and it should be understood that the present invention may be implemented with various modifications different from the embodiments described herein. In addition, in order to aid understanding of the invention, the accompanying drawings are not drawn to scale, but dimensions of some components may be shown exaggeratedly.
[34]
1 is a view for explaining a battery pack according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the battery pack of FIG. 1, and FIG. 3 is a view for explaining a pack case of the battery pack of FIG. 2 , FIG. 4 is a view for explaining the cooling mat of FIG. 2, FIGS. 5 to 7 are views for explaining main parts of the cooling mat of FIG. 4, and FIG. 8 is a view for explaining the air cushion of FIG. 2 .
[35]
1 to 8, the battery pack 10 may include a battery cell 100, a pack case 200, and a cooling mat 300.
[36]
The battery cell 100 may be provided as a secondary battery. The battery cell 100 may be provided as a pouch-type secondary battery, a prismatic secondary battery, or a cylindrical secondary battery. Hereinafter, in the present embodiment, the battery cell 100 is limited to being provided as a pouch-type secondary battery.
[37]
The plurality of battery cells 100 may be provided in plurality. The plurality of battery cells 100 may be stacked to be electrically connected to each other. The electrical connection may be performed through connection between the electrode leads 150 of the plurality of battery cells 100 and a bus bar.
[38]
The pack case 200 may accommodate the plurality of battery cells 100. In the pack case 200, accommodating spaces capable of at least partially dividing and accommodating the plurality of battery cells 100 may be provided.
[39]
The pack case 200 may include a base plate 210, a cover plate 220, a front plate 230, a rear plate 240, a side plate 250, and a partition plate 260.
[40]
The base plate 210 supports the plurality of battery cells 100 and may be provided in a plate shape having a predetermined size. The base plate 210 may be fixedly mounted inside a vehicle (V, see FIG. 9) to be described later.
[41]
The cover plate 220 may cover upper portions of the plurality of battery cells 100. A cooling water supply pipe 340, a cooling water discharge pipe 350, an air inlet 360 and a venting hole unit 370 of the cooling mat 300 to be described later may pass through the cover plate 220.
[42]
The front plate 230 is mounted in front of the base plate 210 and may form a front of the pack case 200. A plurality of through holes 235 through which the air inlet 410 and the venting hole unit 430 of the air cushion 400 to be described later may pass may be formed in the front plate 230.
[43]
The rear plate 240 may be disposed opposite to the front plate 230, mounted on the rear of the base plate 210, and may form the rear of the pack case 200.
[44]
A plurality of through holes 245 through which the air inlet 410 and the venting hole unit 430 of the air cushion 400 to be described later may pass may be formed in the rear plate 240.
[45]
The side plates 250 may be provided in a pair. The pair of side plates 250 are mounted on the base plate 210 to be provided between the rear plate 240 and the front plate 230, and mutually It can be arranged spaced apart a predetermined distance.
[46]
The partition plate 260 divides between the pair of side plates 250 to form the accommodation space, and the front plate 230 and the rear plate ( 250) may be provided between.
[47]
Through the partition plate 260, the plurality of battery cells 100 may be partitioned and accommodated in a predetermined number. In this embodiment, through the pack case 200 in which the partition plate 260 is provided, a plurality of battery cells 100 are divided into a predetermined number and mounted to be directly accommodated in the pack case 200. I can make it.
[48]
Accordingly, in the present embodiment, since a structure such as a module case for separately packaging the predetermined number of battery cells 100 is not required, it has a slimmer and compact size, and a high capacity can be secured. The battery pack 10 of energy density may be provided.
[49]
In addition, in the present embodiment, the assembly process can be simplified by omitting a structure such as a separate module case, thereby improving process efficiency and lowering manufacturing cost.
[50]
The cooling mat 300 may be disposed in contact with the upper surfaces of the plurality of battery cells 100 within the pack case 200. To this end, the cooling mat 300 may have a size capable of covering all upper surfaces of the plurality of battery cells 100.
[51]
The cooling mat 300 includes a mat body 310, a lead through hole 320, a cooling passage 330, a cooling water supply pipe 340, a cooling water discharge pipe 350, an air inlet 360, a venting hole unit ( 370).
[52]
The mat body 310 may be formed of a rubber material having a predetermined volume. The mat body 310 may directly contact the upper surfaces of the plurality of battery cells 100, and may be filled with predetermined air to buffer an external shock or the like.
[53]
The lead through hole 320 is formed in the mat body 310 and may pass through the electrode leads 150 of the plurality of battery cells 100. To this end, the lead through hole 320 may be provided in plural.
[54]
The cooling passage 330 may be formed in the mat body 310. The cooling water for cooling the plurality of battery cells 100 may flow through the cooling passage 330.
[55]
The cooling passage 330 is located in a space between the electrode leads 150 of the plurality of battery cells 100 so as to avoid interference with the electrode leads 150 of the plurality of battery cells 100. Can be formed.
[56]
In this embodiment, the cooling performance of the plurality of battery cells 100 is improved through the cooling mat 300 having the cooling passage 330 and directly contacting the plurality of battery cells 100. It can be remarkably improved.
[57]
The cooling water supply pipe 340 may be provided in the mat body 310 to communicate with the cooling passage 330. The cooling water supply pipe 340 may protrude out of the cover plate 220 of the pack case 200 to receive cooling water from the outside.
[58]
The cooling water discharge pipe 350 may be provided in the mat body 310 to communicate with the cooling passage 330. The cooling water supply pipe 340 may protrude outside the cover plate 220 of the pack case 200 so that the cooling water can be discharged to the outside.
[59]
The air inlet 360 is for injecting air into the mat body 310 and may be provided in the mat body 310. The air inlet 360 may protrude out of the cover plate 220 of the pack case 200 to smoothly inject the air from the outside.
[60]
Through the air inlet 360, the manufacturer or user of the battery pack 10 periodically injects air into the mat body 310 so that the inside of the battery pack 10 can be maintained at a predetermined pressure. I can.
[61]
The venting hole unit 370 may discharge air inside the mat body 310 to the outside when a pressure exceeds a predetermined pressure. To this end, the venting hole unit 370 may protrude out of the cover plate 220 of the pack case 200.
[62]
Through the venting hole unit 370, the battery pack 10 discharges air inside the mat body 310 to the outside when the internal pressure increases due to expansion of the plurality of battery cells 100, It is possible to minimize a sudden increase in internal pressure of the battery pack 10.
[63]
Meanwhile, the battery pack 10 may include an air cushion 400.
[64]
The air cushion 400 is vertically disposed with the cooling mat 300 and may be mounted on an inner wall of the pack case 200 in a front-rear direction. Specifically, the air cushion 400 may be mounted on an inner wall of the front plate 230 and an inner wall of the rear plate 240.
[65]
The air cushion 400 may be provided in plural, and may be made of a rubber material like the cooling mat 300, and a predetermined air may be filled therein to buffer an external shock or the like.
[66]
The air cushion 400 may include an air inlet 410 and a venting hole unit 430.
[67]
The air inlet 410 is for injecting air into the air cushion 400, and the front plate 230 of the pack case 200 and the It may protrude out of the rear plate 240.
[68]
Through the air inlet 410, a manufacturer or user of the battery pack 10 periodically injects air into the air cushion 400 to maintain the inside of the battery pack 10 at a predetermined pressure I can. That is, the manufacturer or user may maintain the internal pressure of the battery pack 10 at a desired predetermined pressure through the air cushion 400 as well as the cooling mat 300.
[69]
The venting hole unit 430 may discharge air inside the air cushion 400 to the outside when a pressure exceeds a predetermined pressure. To this end, the venting hole unit 370 may protrude outside the front plate 230 and the rear plate 240 of the pack case 200.
[70]
Through the venting hole unit 430, the battery pack 10, when the internal pressure increases due to expansion of the plurality of battery cells 100, not only the cooling mat 300, but also the inside of the air cushion 400 By sending the air to the outside together, it is possible to minimize a rapid increase in internal pressure of the battery pack 10.
[71]
9 is a view for explaining a vehicle according to an embodiment of the present invention.
[72]
Referring to FIG. 9, the vehicle V may include at least one battery pack 10 according to the previous embodiment. The vehicle V may be an electric vehicle, a hybrid vehicle, or a vehicle V in any other manner in which the battery pack 10 can be used as a fuel source.
[73]
In addition, the battery pack 10 may also be provided in other devices, devices, and facilities, such as an energy storage system using a secondary battery, in addition to the vehicle V.
[74]
As such, the apparatus, apparatus, and equipment including the battery pack 10 such as the vehicle V and the vehicle V according to the present embodiment include the battery pack 10 described above. It is possible to implement a device, apparatus, or equipment such as a vehicle (V) having all of the advantages due to the battery pack 10.
[75]
According to various embodiments as described above, the battery pack 10 capable of increasing the assembly process efficiency while implementing a high energy density, and the vehicle V including the battery pack 10 may be provided. .
[76]
In addition, according to various embodiments as described above, the battery pack 10 capable of improving cooling performance and the vehicle V including the battery pack may be provided.
[77]
In addition, according to various embodiments as described above, the battery pack 10 capable of buffering an external shock or the like and the vehicle V including the battery pack 10 may be provided.
[78]
In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications may be implemented by those skilled in the art, and these modifications should not be understood individually from the technical spirit or prospect of the present invention.
Claims
[Claim 1]
A battery pack, comprising: a plurality of battery cells; A pack case provided with accommodating spaces for at least partially dividing and accommodating the plurality of battery cells; A cooling mat disposed in contact with upper surfaces of the plurality of battery cells within the pack case; And an air cushion disposed perpendicular to the cooling mat and mounted on an inner wall of the pack case in a front-rear direction.
[Claim 2]
The method of claim 1, wherein the pack case comprises: a base plate; A front plate mounted in front of the base plate; A rear plate disposed opposite the front plate and mounted on a rear side of the base plate; A pair of side plates mounted on the base plate to be provided between the rear plate and the front plate, and spaced apart from each other by a predetermined distance along the width direction of the base plate; And a partition plate that divides between the pair of side plates to form the accommodation space, and is provided between the front plate and the rear plate in a front-rear direction of the base plate.
[Claim 3]
The apparatus of claim 1, wherein the cooling mat comprises: a mat body in contact with upper surfaces of the plurality of battery cells; And a cooling passage formed in the mat body and through which cooling water for cooling the plurality of battery cells flows.
[Claim 4]
The battery pack according to claim 3, wherein the mat body is made of a rubber material.
[Claim 5]
The battery pack as claimed in claim 3, wherein the mat body is filled with air so as to buffer an external shock or the like.
[Claim 6]
The battery pack of claim 5, wherein the mat body is provided with an air inlet for injecting the air.
[Claim 7]
The battery pack according to claim 5, wherein the mat body is provided with a venting hole unit for discharging the air at a pressure of a predetermined or higher pressure.
[Claim 8]
The battery pack of claim 1, wherein the air cushion is provided with an air inlet capable of filling a predetermined air therein.
[Claim 9]
The battery pack according to claim 1, wherein the air cushion is provided with a venting hole unit for discharging the air at a pressure of a predetermined or higher pressure.
[Claim 10]
The battery pack according to claim 1, wherein the air cushion is made of a rubber material.
[Claim 11]
A vehicle comprising a; at least one battery pack according to claim 1.