KR20180106067A - Battery pack having a simplfied cell assembly packaging structure - Google Patents

Abstract

The present invention provides a battery pack having a simplified cell assembly packaging structure. The battery pack includes a battery module in which a plurality of battery cells are stacked so as to be electrically connected to each other, a fixing panel stacked on the upper surface of the battery module, a fixing pin for fixing the fixing panel and the battery module through the fixing panel and the battery module, a circuit board which is stacked on the upper side of the fixed panel and on which electrical parts for sensing cell balancing and abnormal voltage of the battery cells are mounted, and a plurality of bus bars for electrically connecting between the battery cell and the battery cell and between the outermost battery cells of both sides and the circuit board. The housing of the battery pack can be downsized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery pack having a simplified cell assembly packaging structure,

The present invention relates to a battery pack having a simplified cell assembly packaging structure.

In recent years, lithium secondary batteries, which can be charged and discharged, have been widely used as energy sources for wireless mobile devices. In addition, it is attracting attention as a power source for electric vehicles and hybrid electric vehicles (HEV), which are proposed to solve air pollution such as gasoline vehicles and diesel vehicles that used fossil fuels.

BACKGROUND ART [0002] Medium- to large-sized devices such as automobiles use a middle- or large-sized battery system in which a plurality of battery cells are electrically connected to each other due to the necessity of a high output large capacity. As the medium or large-sized battery system gradually increases the required output amount or energy density, the number of unit modules included in the middle- or large-sized secondary battery will gradually increase.

The pouch-type lithium ion polymer secondary battery, which is often used as a unit cell in such a middle- or large-sized battery system, has a relatively large size as compared with the same-type battery used in a small-sized device.

Also, when designing a pack of a medium-sized lithium secondary battery used as a power source for an electric vehicle, a plug-in, and a hybrid automobile, a high energy is required in addition to requiring a high output like a conventional battery. As a result, the capacity of medium and large batteries should become higher and higher. In order to achieve this, a large capacity battery must be mounted in a limited space, so that a large number of cells or a large number of unit cells must be packaged in one lithium secondary battery.

As described above, the number of unit cells included in one battery increases or the cell size becomes very large. In this case, the packaging process becomes complicated and the thickness of the packaging increases. As a result, difficulties in the manufacturing process, reduction in performance, and an inefficient space may not be used.

Therefore, in the conventional method of manufacturing a large capacity cell and a battery having a large number of unit cells, there is a need for a simple and efficient method of connecting a rechargeable lithium battery, that is, a packaging method .

On the other hand, in recent years, a high performance battery having a higher charging capacity such as a unit cell constituting a unit cell has been developed, and battery packs and the like are becoming smaller. That is, small-sized passenger cars such as golf cars, indoor electric vehicles, and miniature electric vehicles such as hybrid cars require a small starting battery pack for obtaining a starting power source.

Therefore, the small battery pack of the small electric vehicle or the starting battery of the passenger car must be installed in a limited space. Therefore, in order to more efficiently utilize the case internal space limited to be miniaturized, A packaging technique that can simplify the connection structure of the substrate and the like is becoming more important.

However, conventionally, there is no example in which a packaging technique suitable for the above-mentioned market demand is proposed, and development is urgent.

Korean Patent Laid-Open Publication No. 10-2017-0009135 (published on Jan. 25, 2017)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a battery pack having a simplified cell assembly packaging structure capable of downsizing a housing of a battery pack by simplifying a packaging structure of the battery cells. .

It is another object of the present invention to provide a battery pack having a simplified cell assembly packaging structure that can be assembled in a simple manner, such as assembling a cell assembly and a circuit board, and saving time.

The present invention includes the following embodiments in order to achieve the above object.

A preferred embodiment of the battery pack having the simplified cell assembly packaging structure according to the present invention comprises a cell assembly stacked so that a plurality of battery cells are electrically connected to each other, a fixed panel stacked on the upper surface of the cell assembly, A circuit board on which a battery pack and an electric component for sensing an abnormal voltage are mounted, the battery pack comprising: a fixing pin for fixing the fixed panel and the cell assembly through the cell assembly; A battery pack having a simplified cell assembly packaging structure including a cell, and a plurality of bus bars that electrically connect between the outermost battery cells on both sides and the circuit board in an electrically conductive manner.

Therefore, the present invention can easily assemble a plurality of battery cells even if a separate inner case is not provided through the fixing pin and the fixing panel, thereby improving the ease of assembling and shortening the working time.

Further, since the fixing plate and the circuit board are fixed so as to be spaced apart from the battery cells, the effect of insulation and heat dissipation can be obtained, and it is not necessary to provide an additional structure for insulation and heat radiation, .

1 and 2 are perspective views illustrating a battery pack having a simplified cell assembly packaging structure according to the present invention.
FIG. 3 is an exploded perspective view of FIG. 2. FIG.
4 is a perspective view showing a fixing panel.
5 is an exploded perspective view of the battery cell.
6 is a side view of the battery pack.
7 is an exploded perspective view showing a laminated structure of battery cells.
8 is a perspective view showing a booth bar assembly member in the present invention.
9 is an exploded perspective view of the bus bar assembly member.

Hereinafter, embodiments and examples of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention.

However, the present invention may be embodied in many different forms and is not limited to the embodiments and examples described herein, and the terms and words used in the specification and claims are not to be construed in a conventional or dictionary sense, It should be construed as meaning and concept consistent with the technical idea of.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, preferred embodiments of a battery pack having a simplified cell assembly packaging structure according to the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 and 2 are perspective views showing a battery pack having a simplified cell assembly packaging structure according to the present invention, and FIG. 3 is an exploded perspective view of FIG.

1 to 3, the present invention includes a cell assembly accommodated inside a housing 20 that is sealed by a cover 10 on which a pole 11 and a handle 11 are formed. The cell assembly includes a battery module 100, a fixed panel 300 for pressing the battery module 100, at least one bus bar 500 for supplying power to the battery module 100, a fixed panel 300, And a second fixing pin 600 for fixing the circuit board 200. The circuit board 200 includes a first circuit board 200 and a second circuit board 200. The circuit board 200 includes a first circuit board 200,

In the battery module 100, a plurality of battery cells 110 are fixed by the first fixing pins 400. 5 to 7, the battery module 100 includes bare cells 113, 123, and 133 for outputting power, first and second cases 111, 121, and 131 And a plurality of battery cells 110, 120, and 130, each of which is composed of a first case 112, a second case 122, and a second case 132.

The bare cells 113, 123 and 133 are provided with battery tabs 113a, 123a and 133a protruding in opposite directions from each other in the main body 113b and outputting power of different polarities, And 133a are formed to protrude outward when the first cases 111, 121, 131 and the second cases 112, 122, 132 are fastened to each other.

The fixing panel 300 fixes the battery module 100 in cooperation with the first fixing pin 400 communicating with the upper surface of the battery module 100. Preferably, the fixing panel 300 can be formed as an insulative reinforced plastic resin. Or the fixed panel 300 may be further laminated with a separate shielding metal sheet for shielding electromagnetic waves.

The circuit board 200 includes a main board 210 on which electrical parts such as BMS are mounted and a supporting board 220 supporting the main board 210 can do.

The main board 210 and the supporting board 220 are fixed to the fixing panel 300 by a second fixing pin communicated with each other in order to prevent insulation and conduction of heat.

The bus bar 500 includes a first bus bar 510 connected to the first power source of the battery modules 100 and a second bus bar 520 electrically connected to the second power source, And a plurality of third bus bars 530 connected to be energized between the first and second bus bars 110 and 110.

The first bus bar 510 and the second bus bar 520 are connected to the battery tabs 113a, 123a and 133a of the battery cells 110 located outermost among the stacked battery cells 110, . For example, the first bus bar 510 is connected to the lowermost battery cell 110, the second bus bar 520 is connected to the opposite battery cell 110, and the third bus bar 530 connect the battery cells 110 stacked between the outermost battery cells 110 so as to be energized.

Here, the present invention further includes a bus bar assembly member (see FIGS. 8 and 9) for connecting the first bus bar 510 or the second bus bar 520 and connecting the divided bus bars 500 . Such a bus bar assembling member will be described later.

4 and the detailed structure of the battery module 100 will be described with reference to FIGS. 5 to 7. FIG.

4 is a perspective view showing the fixing panel 300 of the present invention.

4, the fixing panel 300 includes a fixing plate 310 formed of a flat plate material, a heat dissipation opening 320 formed at the center of the fixing plate 310, And a supporting end 330 which is in close contact with an outer surface of the outermost battery cell 110 among the plurality of battery cells 110.

The fixing plate 310 is formed in a flat plate shape and a plurality of first fixing holes 311 for fixing the second fixing pins 600 which communicate with the circuit board 200 are formed.

The supporting end 330 extends outwardly and downwardly from the fixing plate 310 to be in close contact with the upper surface of the battery module 100 to support the fixing plate 310 away from the outer surface of the battery module 100. Here, the supporting end 330 is formed with a second fastening hole 331 through which the first fixing pin 400 is communicated.

The heat dissipation port 320 is opened in a predetermined shape at the center of the fixing plate 310 to dissipate heat generated from the battery module 100.

Therefore, the fixing panel 300 presses and fixes the battery module 100 by the first fixing pin 400 which is connected in a state of being stacked on the upper surface of the battery module 100. At this time, the fixing panel 300 insulates the substrates 210 and 220, which are sequentially stacked from the upper side, with the battery module 100, and dissipates heat of the battery module 100.

Fig. 5 is an exploded perspective view of the battery cell, Fig. 6 is a side view of the battery pack, and Fig. 7 is an exploded perspective view showing the laminated structure of the battery cells.

4 to 6, the battery module 100 includes a plurality of battery cells 110, 120, and 130 stacked together and a plurality of battery cells 110, 120, and 130 by a third bus bar 530, 130, respectively.

The battery cells 110, 120, and 130 include first cells 111, 121, and 131 that are coupled to each other while the bare cells 113, 123, and 133 and the bare cells 113, And a second case (112, 122, 132).

The battery cells 113a, 123a and 133a for outputting the positive and negative power of the main body 113b protrude in opposite directions to each other and extend to the end of the main body 113b. (113c).

The first case 111, 121, and 131 and the second case 112, 122, and 132 are configured such that the main body 113b of the bare cells 113, 123, and 133 are open windows And first horizontal bars 111a and 112a and second horizontal bars 111c and 112c extending in the lateral and longitudinal directions around the opening window (not shown) The heat dissipating grooves 111e and 112e formed in the grooves 111a and 112a and the first horizontal bars 111a and 112a and the second horizontal bars 111c and 112c are extended to a contact area 112f, 121f, and 131f extending from the coupling ends 111f, 112f, 121f, and 131f and the fixing holes 111g, 112g, 121g, and 131g through which the first fixing pins 400 are communicated, And support grooves 112i for supporting the latching ends 113c formed at the ends of the bare cells 113, 123,

The first casings 111, 121 and 131 and the second casings 112, 122 and 132 have symmetrical structures to receive the bare cells 113, 123 and 133. For example, the first surface A of the first case 111, 121, 131 is formed in the same structure as the second surface B of the second case 112, 122, 132, The second surface B of the second case 111, 121, 131 is formed in the same structure as the first surface A of the second case 112, 122, 132.

More specifically, the heat dissipation grooves 111e, 112e, 121e, 122e, 131e, and 132e have first and second transverse bars 111a and 112a, Are formed in the grooves 111c and 112c, respectively. The heat dissipation grooves 111e, 121e and 131e of the first cases 111, 121 and 131 are formed on the first surface A and the heat dissipation grooves 112e and 122e of the second cases 112, , 132e are formed on the second surface (B).

 Therefore, for example, the heat dissipation groove 121e formed in the first case 121 of the second battery cell 120 may be formed in the second side of the second case 112 of the first battery cell 110 stacked on the upper side, And the heat dissipating recess 122 formed in the second case 122 of the second battery cell 120 is formed in the heat dissipating recess 122e formed in the second battery cell 120, And the heat dissipation holes 134 are formed in connection with the heat dissipation grooves 131e of the first case 131 of the cell 130, respectively.

The coupling ends 111f, 112f, 121f and 131f extend outward from the corner points where the first horizontal bars 111a, 112a, 121a and 131a meet the second horizontal bars 111c, 112c, 121c and 131c, And fixing holes 111f, 112f, 121f, and 131f through which the first fixing pins communicate are formed. One side of the coupling ends 111f, 112f, 121f and 131f is formed in a plane parallel to the vertical bars 111b, 111d, 112b and 112d and the opposite side is formed in the vertical bars 111b, 111d, 112b and 112d . That is, the coupling ends 111f, 112f, 112f, 121f, and 131f are formed to be planar with the vertical bars 111b and 111d on one side, but are formed to protrude from the opposite sides of the vertical bars 112b and 112d on the opposite side.

One side of the coupling ends 111f, 112f, 121f and 131f is connected to the first side A of the first case 111, 121 and 131 and the second side of the second case 112, B and the opposite surfaces of the coupling ends 111f, 112f, 121f and 131f correspond to the second surfaces B of the first cases 111, 121 and 131 and the second surfaces B of the second cases 112, Corresponds to the first surface (A).

The longitudinal bars 111b, 111d, 112b and 112d and the coupling ends 111f and 112f of the first surface A of the first case 111, 121 and 131 are connected to the coupling ends of the other battery cells 110 111f, 112f, 121f, and 131f, and the vertical bars 111b, 111d, 112b, and 112d.

Conversely, the coupling ends 111f, 121f, and 131f formed on the second surface B of the first case 111, 121, and 131 are formed on the first surface A of the second case 112, 122, Are tightly engaged with the coupling ends 112f, 122f, and 132f without a clearance, but are fastened in a state where the vertical bars 111b, 111d, 121b, 112d, 131b, and 131d are spaced apart. The spaced gaps of the vertical bars 111b, 111d, 121b, 121d, 131b, and 131d may be formed as passages through which the battery tabs 113a, 123a, and 133a are drawn.

The support grooves 112i are formed on the second surface B of the first case 111, 121 and 131 and the first horizontal bar 111a on the first surface A of the second case 112, And is formed as a stepped groove formed in the second horizontal bar 111c to support the latching end 113c of the bare cells 113, 123,

The lead groove 112h is used as a space in which a jig such as a tongue for pulling out the bare cell 113 is inserted as a groove extending from the support groove 112i toward the engagement ends 111f and 112f.

The bus bar assembly member 700 will be described with reference to Figs. 7 and 8. Fig.

FIG. 7 is a perspective view showing a booth bar assembling member in the present invention, and FIG. 8 is an exploded perspective view of a booster bar assembling member.

Referring to FIGS. 7 and 8, the bus bar assembly member 700 is configured to connect the divided bus bars 500 to each other. For example, the first bus bar 510 (and / or the second bus bar 520) may include a first split bar 511 that is mutually divided so as to be universally usable in battery modules 100 of different heights, And a second split bar 512.

The bus bar assembling member 700 is characterized in that the divided bus bars 511 and 512 are interconnected so as to be energized.

The first split bar 511 and the second split bar 512 include first and second coupling holes 511b and 512b formed at the ends 511a and 512a and second coupling holes 511c and 512c do.

The diameter of the first coupling holes 511b and 512b and the diameters of the second coupling holes 511c and 512c are different from each other and the diameter of fixing means (not shown) for inserting the bus bar assembly member 700 into communication therewith, Can be selected according to the lengths of the ends of the first split bar (511) and the second split bar (512). That is, when the lengths of the end portions of the first split bar 511 and the second split bar 512 are different from each other, for example, the first split hole 511b of the first split bar 511, Fixing means (not shown) may be connected to the second engaging hole 512c of the bar 512 to be fixed to the bus bar assembling member 700. [ Or the first and second coupling holes 511b and 512b and the second coupling holes 511c and 512c according to the diameter of the fixing means.

The bus bar assembly member 700 includes a conductive plate 730 as a conductive metal plate which is in close contact with the first divided bar 511 and the second divided bar 512 to energize both sides thereof and a second divided bar 511, And includes a first assembly plate 710 and a second assembly plate 720 which are mutually coupled to receive the split bar 512 and the conductive plate 730 therein.

The first assembly plate 710 is a plate member extending in the longitudinal direction and includes a first plate member 711 for pressing one surface of the first split bar 511 and the second split bar 512 on one surface, A plurality of pressing protrusions 712 protruding from both sides of the first plate hole 711 and a first plate hole 713 penetrating the first and second coupling holes 511b and 512b to communicate with the first and second coupling holes 511c and 512c, .

The first plate member 711 is a plate member extending in the longitudinal direction and is pressed against the first split bar 511 and one side of the second split bar 512 by the pressure applied by the press protrusion 712 and / Respectively.

The pressing protrusions 712 are formed on both side edges of the first plate 711 so as to be rotatable by protruding and elastic forces. Therefore, the pressing projection 712 is rotated in the outward direction while the end of the pressing projection 712 is in close contact with the second assembly plate 720, and then the pressing projection 712 is positioned by the elastic force and presses the rear face of the second assembly plate 720.

The first plate hole 713 is formed so as to communicate with the first coupling holes 511b and 512b or the second coupling holes 511c and 512c and a fixing means (not shown) is communicatively inserted.

The second assembly plate 720 includes a second plate member 721 extending in one direction and a first and second split bars 511 and 512 protruding from both sides of the second plate member 721, And a second plate hole 723 penetratingly formed at a position coinciding with the first plate hole 713. The first plate hole 713 is formed in the first plate hole 713,

The second plate member 721 extends in the longitudinal direction and is in close contact with one surface of the conductive plate 730. That is, the second plate member 721 is fixed to the first plate member 711 by the pressing force applied while the pressing protrusion 712 is fastened to the back surface, and the conductive plate 730 and the first split bar 511 and the second And presses the split bar 512.

The fitting protrusions 722 are formed on the upper and lower sides of the second plate member 721, respectively. The pair of fitting protrusions 722 are spaced apart from each other and sandwich the first divided bar 511 and the second divided bar 512 so as to be in close contact with each other.

At least one second plate member 723 is formed on the upper and lower sides of the second plate member 721 and has a first plate hole 713 and a first engagement hole 511b and a second engagement hole 511c And 512c and the conductive plate 730 are fastened to each other by fastening means (not shown).

At this time, the conductive plate 730, the first split bar 511 and the second split bar 512 are not fastened by separate fastening means (not shown) but the first plate 711 and the second plate 721 by only the pressing force of the pressing projection 712.

Alternatively, the conductive plate 730 and the first split bar 511 and the second split bar 512 may be fastened together by fixing means (not shown), and additional heat dissipation holes may be additionally provided for dissipating heat It is possible.

The conductive plate 730 includes a head portion 731 which is brought into close contact with an end 511a of the first split bar 511, a tail portion 732 which is brought into close contact with an end 512a of the second split bar 512, And an extension 733 extending between the head portion 731 and the tail portion 732.

The head part 731 is formed at one side and is formed with a first groove 731a through which the fixing means (not shown) is communicated, and is positioned between one side of the second plate 721 and the first dividing bar 511. The head portion 731 is in contact with the first split bar 511 while the first plate 711 and the second plate 721 are pressed by the pressing protrusions 712 and the fixing means ).

The tail portion 732 has a second groove 732a cut upward from the lower side and is positioned between one side of the second plate 721 and the second split bar 512. The tail portion 732 is brought into close contact with the second split bar 512 when the pressing projection 712 of the first assembly plate 710 is fastened to the second plate 721. [ Here, the second groove 732a is cut upward so as to communicate the fixing means (not shown) inserted through the second coupling holes 511c, 512c, 512c and the first plate hole 713.

The extension portion 733 is connected between the head portion 731 and the tail portion 732 to enable electrical conduction between the first split bar 511 and the second split bar 512.

The present invention includes the above-described embodiment, and the following description explains an easy operation of packaging the cell assembly 100 due to the embodiment.

The operator assembles the battery cells 110, 120, and 130 by housing the bare cells 113, 123, and 133 in the first and second cases 111, 121, and 131, respectively, The plurality of battery cells 110, 120, and 130 are assembled and stacked.

At this time, the bare cells 113, 123, and 133 are formed on the second surface B of the first case 111, 121, and 131 and the first surface A of the second case 112, 122, The battery tabs 113a, 123a and 133a are engaged with the vertical bars 111b, 111d, 121b and 121d of the first cases 111, 121 and 131, 112d, 122b, 122d, 131b, 132d of the two cases 112, 122, 132, respectively.

The assembled battery cells 110 are sequentially stacked in consideration of the polarity of the battery tabs 113a, 123a, and 133a. For example, the battery tabs 113a, 123a, and 133a are stacked such that positive and negative battery tabs 113a, 123a, and 133a are sequentially positioned.

Then, the operator fixes the battery module 100 by inserting the first fixing pin 400 after positioning the fixing panel 300 on the upper surface of the battery module 100 as described above. At this time, the fixing plate 300 is fixed by the supporting end 330 in a state where the fixing plate 310 is separated from the upper surface of the battery module 100.

Then, the worker sequentially stacks the circuit boards 200 made of two pieces so as to be spaced apart from each other on the upper side of the fixed panel 300. The circuit board 200 may include a main board 210 on which electrical components are mounted and a supporting board 220 for supporting the main board 210. [ Further, the supporting substrate 220 may be made of a shielding metal material that shields electromagnetic waves or the like, or may be made of an insulating substrate made of an insulating plastic resin.

Also, the operator can connect the first bus bar 510 to the positive (+) and negative (negative) battery tabs 113a, 123a, and 133a of the battery cells 110 positioned at the outermost one of the stacked battery modules 100 And positive (+) and negative (-) battery tabs 113a and 113b of the battery cell 110 positioned on the outermost opposite side of the second bus bar 520, respectively, 123a, and 133a and the main board 210, respectively.

Further, the operator fastens the third bus bar 530 between adjacent battery taps 113a, 123a, and 133a. Here, the third bus bar 530 may be fixed between the battery taps 113a, 123a, and 133a through ultrasonic welding after the battery module 100 is stacked.

The length of the first bus bar 510 or the second bus bar 520 and the length of the corresponding battery tabs 113a and 123a of the battery module 100 are determined by the length of the bus bar assembly member 700, The first split bar 511 and the second split bar 512 can be connected to each other through the bus bar assembly member 700 when the difference in distance between the first and second split bars 133a and 133a and the circuit board 200 occurs.

The booth bar assembly member 700 of the present invention is formed by dividing the booth bars 500 and thus the distance between the outermost battery cell and the circuit board 200 and the length of the bus bar 500 are different from each other The length of the split bars having a length can be connected to each other, or the length shortened by the conductive plate 730 can be compensated for, thereby improving workability, assemblability and versatility.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

10: Cover 11: Handle
20: housing 100: battery module
110, 120, 130: battery cells 111, 121, 131:
112, 122, 132: second case 113, 123, 133:
113a 123a, 133a: Battery tab 113b:
113c: Hanging ends 111a, 111c: Horizontal bar
111e, 112e: heat dissipating grooves 111f, 112f:
111g, 112g: Fixing hole 112h: Drawing groove
114, 124, 134: a heat radiating portion 200: a circuit board
210: main substrate 220: support substrate
300: Fixing panel 310: Fixing plate
311: first fastening hole 320:
330: Supporting step 331: Second fastening hole
400: first fixing pin 500: bus bar
510: first bus bar 511: first split bar
512: second split bar 600: second fixing pin
700: booth bar assembly member 710: first assembly plate
720: Second assembly plate 730: Conductive plate

Claims (9)

A battery module having a plurality of battery cells;
A fixing panel stacked on the upper surface of the battery module;
A fixing pin for fixing the fixing panel and the battery module through the fixing panel and the battery module;
A circuit board which is stacked on the upper side of the fixed panel and on which electrical components for sensing cell balancing and abnormal voltage of the battery cells are mounted; And
And a plurality of bus bars for electrically connecting between the battery cell and the outermost battery cells on both outermost sides of the battery cell and the circuit board, and a packaging structure of the simplified cell assembly.
The circuit board according to claim 1, wherein the circuit board
Wherein the battery pack is formed by a plurality of spaced-apart vertical cells in the fixed panel.
The apparatus of claim 1, wherein the fixed panel
A fixed plate spaced apart from the battery module; And
And a supporting end extending from the fixing plate to extend outwardly and downwardly from the battery module to be in close contact with the battery module to support the fixing plate so as to be spaced apart from the battery module.
The battery module according to claim 1,
A bare cell having a battery tab for outputting power of different polarity; And
And a first case and a second case which are coupled to each other with the bare cell therebetween,
The first case and the second case
A pair of horizontal bars and a vertical bar each extending in the lateral and longitudinal directions at mutually opposite positions so as to form an opening window for exposing both sides of the body of the bare cell;
A heat radiating groove engraved on one surface of the horizontal bar for directing the other battery cells to form a heat radiating port in association with the different battery cell casings;
A support groove formed on the opposite side of the horizontal bar on which the heat dissipation groove is formed to support an end of the bare cell; And
And a connection terminal formed with an area extending outward from a point where the horizontal bar and the vertical bar are connected to each other, and a fixing hole through which the fixing pin communicates, the packaging structure comprising a simplified cell assembly packaging structure.
The heat sink as claimed in claim 4, wherein the heat dissipating groove is parallel to one surface of the vertical bar,
Wherein the support groove has a height different from the opposite surface of the vertical bar.
The method according to claim 1,
Wherein one of the bus bars is divided into a first partition bar connected to the circuit board and a second partition bar connected to the outermost battery cell,
And a bus bar assembly member for connecting the first and second split bars to each other so as to be energized.
7. The apparatus according to claim 6, wherein the bus bar assembly member
A conductive plate which is brought into close contact with the first and second split bars as a conductive metal plate to energize both sides; And
And a first assembly plate and a second assembly plate that are mutually coupled to receive the first division bar and the second division bar and the conductive plate inside.
8. The apparatus of claim 7, wherein the first assembly plate
A first plate that extends in the longitudinal direction and presses one surface of the first split bar and the second split bar on one surface; And
A plurality of pressing protrusions protruding from both sides of the first plate to press the back surface of the second plate; The battery pack having a packaging structure of a simplified cell assembly.
8. The apparatus of claim 7, wherein the second assembly plate
A second plate for pressing the opposite side of the first split bar and the second split bar; And
And at least a pair of fitting protrusions protruding from both sides of the second plate and spaced apart from each other to sandwich the first and second split bars therebetween. pack.

Images