KR20130030545A - Battery unit cell comprised in inserted case and battery module assembled at least one thereof - Google Patents

Abstract

PURPOSE: A unit battery cell and a battery module are provided to reduce production cost and to prevent a short circuit between battery tabs by the contact of the upper side of the battery module and external conductive material. CONSTITUTION: A unit battery cell comprises a battery cell; and an insert type case(10) which accommodates the battery cell. The insert case comprises a casing main body(17) made of the plastic material; a mounting part(11) attached to the wall of the battery cell; a coupling end which is protruded from the both sides of the casing main body; coupling protrusions(15) protruded from the front or back side of the coupling end; and one or more coupling units(16) which are formed on a coupling protrusion-uninstalled side.

Description

Unit battery cell consisting of a fitted case and a battery module using the same {Battery unit cell comprised in inserted case and battery module assembled at least one

The present invention relates to a unit battery cell consisting of a fitting case and a battery module using the same, and more specifically, in close contact with any one of the front or rear of the battery cell in a case having a fitting structure to be fastened to each other. Unit battery cell consisting of a case-type case that can reduce the number of cases to form a battery module by sequentially fixing one or more unit battery cells to accommodate the battery cells in close contact and to save manufacturing costs and time; It relates to a battery module using the same.

Secondary battery (Secondary battery) is a battery that can be charged and discharged, unlike a primary battery that can not be charged, is used in small portable electronic devices such as phones, notebook computers and camcorders for low-capacity batteries, hybrid vehicles for large-capacity batteries It is widely used as a power source for driving a motor.

The secondary battery may be manufactured in various shapes, and typical shapes include cylindrical and square shapes. The secondary battery forms a large capacity secondary battery (hereinafter, referred to as a 'battery module') by connecting a plurality of the above-described high output secondary batteries to be used for driving a motor such as an electric vehicle requiring high power.

Such a secondary battery has a structure in which an electrode group for producing electrical energy is produced in a case by an electrochemical reaction, and dozens of such secondary batteries are connected to form a battery module.

As such, since the battery module is formed of dozens of secondary batteries, a great deal of attention is required for work efficiency and robustness after mounting to each secondary battery, particularly HEV (hybrid vehicle), EV (electric vehicle), and wireless. When installed in devices with frequent vibrations or shocks, such as vacuum cleaners, electric bicycles, and electric scooters, the robustness of the battery module is very important.

Therefore, the conventional battery module case is casing with the above-mentioned rigidity, but the emphasis on reinforcement only to emphasize the rigidity when assembling the unit battery cell, which requires a lot of time and attention to the casing of the unit battery cell There was a problem.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to provide a case that can be fastened by fitting between the cases, to make a unit battery cell in one case to make less The present invention provides a unit battery cell having a fitted case that can be manufactured with time and labor, and can reduce manufacturing costs, and a battery module using the same.

Another object of the present invention is to fit the top surface of the battery module in order to prevent the occurrence of short between the battery tabs in contact with the insertion type that can prevent the contact of the conductor introduced from the outside to the top and the battery tab. It is to provide a unit battery cell composed of a case and a battery module using the same.

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

A first embodiment of the present invention is a battery cell in which a battery tab for inputting and outputting positive and negative power is formed; And a fitting case accommodating one surface of the battery cell so as to be in close contact with the front surface or the rear surface of the battery cell, wherein the fitting case is formed of an insulating plastic-based material and formed into a cross-section formed upright; A recess formed intaglio to be inward from the front and rear of the casing body so that any one of the front or rear surface of the battery cell is in close contact with the inward wall; A coupling end protruding laterally from both sides of the casing body to extend in the vertical direction to form a pair of cross sections spaced apart from each other toward the front and the rear; A coupling protrusion protruding from any one of a cross section facing forward and a cross section facing backward at the coupling end; At least one coupler is formed as a groove inwardly in the cross section of the front end or the rear end of the coupling end is not provided with the engaging projection.

In the second embodiment of the present invention, the fitting case further includes a heat dissipation hole for dissipating heat generated in the battery cell by forming one or more penetrating through the wall surface of the casing body in which the seating portion is formed.

In the third embodiment of the present invention, the fitted case protrudes rearward from both side surfaces of the casing body to form the battery cell which is introduced by forming an upright wall surface with the rear surface of the casing body in which the battery cell is seated therebetween. Guide, and further comprises a guide frame to which the coupling end is fastened at the side.

In the fourth embodiment of the present invention, either the front or the rear of the battery cell in which the battery tab is formed, the positive and negative power input and output is provided with a fitted case that is fastened in a fitted manner in the front and rear in series or One or more unit battery cells electrically connected in parallel; The upper surface of the at least one unit battery cell includes a protective cap for sealing the upper surface so that the battery tab is exposed to the upper side, The fitting type casing body is formed of a cross-section that is made upright formed of an insulating plastic-based material ; A recess formed intaglio to be inward from the front and rear of the casing body so that any one of the front or rear surface of the battery cell is in close contact with the inward wall; A coupling end protruding laterally from both sides of the casing body to extend in the vertical direction to form a pair of cross sections spaced apart from each other toward the front and the rear; A coupling protrusion protruding from any one of a cross section facing forward and a cross section facing backward at the coupling end; At least one coupler is formed as a groove inwardly in the cross section of the front end or the rear end of the coupling end is not provided with the engaging projection.

In the fifth embodiment of the present invention, the fitting case is a heat dissipation hole for dissipating heat generated in the battery cell by forming one or more penetrating through the wall surface of the casing body in which the seating portion is formed; And guides the battery cell to protrude rearward from both sides of the casing main body to form an upstanding wall surface with the rear surface of the casing main body on which the battery cell is seated, and to guide the coupling end from the side. It is preferable to further include.

In the sixth embodiment of the present invention, the battery tab includes a bent surface that is bent from the upper side of the vertical surface to be upright from the top of the battery cell to form a plane, the fastening hole is formed through the bent surface, the case It is preferable that the bent surface of the battery tabs on both sides of the seated on the front and rear respectively includes a support means fixed to the upper end to support the lower end in a state where they overlap each other.

In the seventh embodiment of the present invention, the battery module is electrically adjacent to each other in one or more unit battery cells are electrically connected to the battery tab having a different polarity, the upper surface of the battery tab is made of an insulating material to match the fastening hole It is preferable that the through hole is formed to further include a protective plate fixed to the bent surface by the screw.

In the eighth embodiment of the present invention, the battery module is a safety member that is fixed between the battery tabs to prevent overvoltage between the battery tab, and the foreign material to the outside by sealing the upper surface of the at least one unit battery cell and At least one or more of the upper cover to prevent the contact of the safety member, the conductive metal plate is formed on both sides of the PCB to apply the overvoltage between the battery tab; A through-hole formed in the PC to match the fastening hole so that the screw is in communication communication insertion; And a protection circuit that receives the voltage applied from the battery tab through the PC and turns off when sensing an abnormal voltage to cut off electricity between the battery tabs, wherein the upper cover has one or more positive and negative power lines connected thereto. Exposed only the battery tab and the remaining battery module is characterized in that it is provided with a fitted case that is accommodated inside the sealed.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is provided with a case that can be fastened between the case, the unit battery cell can be achieved in one case at the time of assembly work It has a small time and the number of processes, the manufacturing cost is low and the productivity is improved.

Another object of the present invention is to prevent the contact of the conductor introduced from the outside to the battery tab in order to prevent the short between the battery tab as the conductor is in contact with the upper surface of the battery module can prevent the failure in advance. It is effective in preventing safety accidents.

1 is a perspective view showing one side of the unit battery cell consisting of a fitted case according to the present invention and a fitted case in a battery module using the same;
Figure 2 is a perspective view showing the other side of the case in the unit battery cell and a battery module using the same type consisting of the case according to the present invention,
3 is a perspective view showing a unit battery cell and a battery module using the same, consisting of a fitting type according to the present invention;
4 is an exploded perspective view showing a battery tab in a unit battery cell and a battery module using the same according to the present invention;
5 is a perspective view showing an embodiment in which a safety member is applied to a unit battery cell and a battery module using the same according to the present invention.
6 is a perspective view showing an embodiment in which a top cover is applied to a unit battery cell and a battery module using the same according to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a unit battery cell and a battery module using the same according to the present invention will be described in detail.

1 is a perspective view showing one side of a unit battery cell composed of a fitted case and a battery module using the same according to the present invention, Figure 2 is a unit battery cell composed of a fitted case according to the present invention and 3 is a perspective view showing the other side of the case in the battery module using the same, Figure 3 is a perspective view showing a unit battery cell consisting of a fitted case according to the present invention and a battery module using the same.

1 to 3, the battery module according to the present invention includes a unit battery cell including a fitted case 10 and a battery cell 20 mounted on the front or rear surface of the fitted case 10. And a protective plate 60 for preventing a short of the battery cell 20, and a support means 40 for supporting the battery tab 21 of the battery cell 20 on the upper surface of the case 10. .

Here, the battery module 100 is one or more unit battery cells (20, 20 ', 20' ') including the configuration as described above in close contact between the fitting case (10, 10', 10 '') It is fixed by the fastening, and is formed to be electrically connected in series or in parallel between the battery tab 21 of the battery cells 20 included in the unit battery cells (20, 20 ', 20' ').

That is, when the one or more unit battery cells 20, 20 ′, and 20 ″ are accommodated with the front surface of the first battery cell 20 seated in the first first fitting case 10, the first battery The second fitting case 10 ′ is in close contact with the rear side of the cell 20, and the front surface of the second battery cell 20 ′ is in close contact with the rear side of the second fitting case 10 ′. That is, the first unit battery cell is composed of a first fitting case 10 and the first battery cell 20, the first fitting type of the first unit battery cell 20 at the time of assembling the battery module 100 The second fitting case 10 ′ of the case 10 and the second unit battery cell 20 ′ seals the front and rear surfaces of the first battery cell 20 and the second unit battery cell 20 ′ of the second unit battery cell 20 ′. The second battery cell 20 'is sealed to the front of the second fitting case 10' of the second unit battery cell and the third fitting case 10 '' of the third unit battery cell 20 ''. do.

The fitting type case 10 is formed of a casing body (17) consisting of a wall surface to be formed upright, and grooves inwardly inward and outward on the inner and outer wall surfaces of the casing body (17), whichever of the front and rear of the battery cell (20). One or more heat dissipation holes 12 for dissipating heat generated in the battery cell 20 which is formed through and adhered to the seating parts 11 and 18 on which one surface is seated, and the A guide frame 13 for guiding the battery cell 20 protruding rearward from both sides of the casing body 17 and a coupling end 14 protruding laterally from the guide frame 13 and extending in a vertical direction; And a coupling protrusion 15 protruding from the cross section of the coupling end 14 and a coupling hole 16 recessed in the cross section of the coupling end 14.

The casing body 17 is made of an insulating plastic-based material to form a cross section that is upright. Herein, the present invention forms a unit battery cell 20 as one case 10 which is in close contact with any one of the front and rear surfaces of the battery cell 20, and a plurality of unit battery cells 20 are connected to the battery module ( 100). Among them, one unit 10 consists of one case 10 in one unit battery cell 20, and the number of parts is smaller than the conventional case casing both the front and rear.

The seating parts 11 and 18 may be formed as grooves inward from the front and rear surfaces of the casing body 17 so that any one surface of the front or rear surface of the battery cell 20 is in close contact with each other. In addition, the seating portions 11 and 18 are formed on both the front and rear surfaces of the casing body 17 so that different battery cells 20 may be seated on the front and rear surfaces of the casing body 17.

One or more heat dissipation holes 12 are formed in the wall surface of the casing main body 17 in which the seating portions 11 and 18 are formed so as to be seated in the seating portions 11 and 18 in the battery cell 20. Dissipate the heat generated.

The guide frame 13 guides the battery cell 20 protruding from either side surface of the casing body 17 in either the front or rear direction. In particular, the guide frame 13 extends in the vertical direction at both ends of the casing body 17, for example, is formed as a wall surface protruding to both sides from the rear surface of the casing body 17. In addition, the guide frame 13 is preferably formed to protrude in the direction in which the casing body (17) in which the battery cell 20 is continuously in continuous contact with each other.

The coupling end 14 is an upright cross-section that protrudes laterally from the guide frame 13 and extends in the up and down direction, and is formed to be spaced apart from each other as a pair to form a groove extending in the up and down direction therebetween.

The coupling protrusion 15 is protruded from a cross section in the direction in which the other casing body 17 is in close contact with the coupling end 14, and is coupled to the coupling hole 16 of the other casing body 17.

The coupler 16 is formed in a cross section directed in the opposite direction to the direction in which the other casing body 17 is in close contact with the coupling end 14. Therefore, the coupler 16 is coupled to the coupling protrusion 15 formed in the casing body 17 supporting the front battery cell 20.

The battery cell 20 includes a battery tab 21 through which positive and negative power are input and output, and a body 22 in which power is generated under the battery tab 21.

Here, the battery tab 21 is supported by the support means 40 formed at the upper end of the battery tab 21 is formed to be connected to the battery tab 21 of the opposite polarity formed in the other battery cell 20 and overlapped with the screw ( 30) is inserted and fixed.

In addition, the support means 40 is made of an insulating material and is fixed at the upper end of the battery cell 20 so that the screw 30 communicating with the overlapping surface 212 overlapping each other is inserted and fixed to the battery tab ( 21).

Preferably, a protective plate 60 made of an insulating material is further included on the bent surface 212 of the battery tab 21 overlapping each other to increase the contact area of the screw 30 and to the conductor introduced from the outside. Therefore, it is preferable to prevent the short between the battery tabs 21. The battery tabs 21 to 60 are described below with reference to FIGS. 4 and 5.

4 is an exploded perspective view illustrating a battery tab in a unit battery cell and a battery module using the same according to the present invention, and FIG. 5 is a unit battery cell and a battery using the same according to the present invention. Figure is a perspective view showing an embodiment in which the safety member is applied to the module.

4 and 5, the battery tab 21 is formed in a 'b' shape which is bent in the vertical plane 211, where the bent surface 212 bent in the vertical plane 211 is a screw 30. It includes a fastening hole 213 to be fastened.

Therefore, the two adjacent battery tabs 21 electrically connected to each other are fastened to the adjacent battery tabs by screwing the screw 30 in a state where the bent surface 212 overlaps with each other so that the fastening holes 213 coincide with each other. 21) is connected.

In addition, the support means 40 is inserted into the lower end of the bent surface 212 overlapping each other in the battery tab 21 on both sides to support the lower end of the bent surface 212. The support means 40 supports the bent surface 212 at the lower end between the battery tabs 21 on both sides so that the bent surfaces 212 overlapped with each other may be bent due to an external impact or the release of the connected state is prevented. .

In addition, the present invention, the safety member 70 for blocking the overvoltage is applied to the battery tab 21, the protective cap 50 to insulate the upper surface of the battery module, and the unauthorized current between the battery tab 21 It is preferable to further include a protective plate 60 for sealing the upper surface in order to prevent short shortage due to.

The safety member 70 includes a PCB 71 fixed between the battery tabs 21 overlapping each other, a through hole 72 into which the screw 30 is inserted, and an upper surface and a rear surface of the PCB 71. And a protection circuit 73 provided on one side.

The PCB 71 is formed by coating a conductive metal plate (for example, a plated plate) on the top and bottom surfaces to transfer power applied between the battery tabs 21 to the protection circuit 73. In addition, the conductive metal plate of the PC 71 is connected to the protection circuit 73 so that power applied from the upper surface can be transferred to the lower surface through the protection circuit 73. Accordingly, the power applied from the upper battery tab 21 of the battery tab 21 is transmitted to the protection circuit 73 through the upper conductive metal plate of the PCB, and formed on the lower surface of the PC 71 in the protection circuit 73. Power may be applied to the lower battery tab through the conductive metal plate.

For this purpose, the PC 71 is positioned between the upper battery tab 21 and the lower battery tab 21. That is, the PC 71 is seated on the bent surface 212 positioned below the two battery tabs 21 overlapping each other, and the bottom surface of the battery tab 21 positioned on the upper side may contact the upper side. To be installed.

The through hole 72 is formed to coincide with the fastening hole 213 of the battery tab 21, and the screw 30 inserted into and communicated with the fastening hole 213 of the battery tab 21 is inserted and fixed. .

The protection circuit 73 is turned off when an overvoltage applied through a conductive metal plate (for example, a plated plate) formed in the PCB 71 is detected so that an abnormal voltage flowing between the battery tabs 21 is not energized. Block it.

The protective cap 50 is seated so as to cover the entire upper surface of the battery module 100, and a through hole 72 is formed so that the battery tab 21 protrudes upward. The protective cap 50 is preferably formed of an insulating material in order to prevent a short failure in which an unauthorized metallic conductor flows into the upper surface of the battery module 100 and is not electrically connected between battery tabs.

The protective plate 60 is fixed by a screw 30 communicating with the battery tab 21 on the top surface of the battery tab 21 overlapping each other. The protective plate 60 provides a contact area for maintaining a firm fixing force by the screw 30 on the top surface of the overlapping battery tabs 21 and at the same time other battery tabs that should not be connected by unauthorized conductor contact. It is preferable that it is formed of an insulating material in order to be energized with the (21) to prevent the short.

More preferably, the screw 30 as well as the protective plate 60 may be made of a material of insulating reinforcement plastic (PP, PE) or may be applied with an insulating coating (silicon) treated screw 30.

Figure 6 is a perspective view showing an embodiment in which the upper cover 80 is applied to a unit battery cell and a battery module consisting of a fitted case 10 according to the present invention.

Referring to FIG. 6, the present invention exposes only the battery tab 21 to which a power line is connected in constructing a battery module having one or more unit battery cells configured as a fitted case 10, and the remaining battery tab 21. ) May further include an upper cover 80 which seals the upper surface of the battery module 100 to prevent unnecessary contact of a conductor that is not permitted from the outside.

The upper cover 80 is connected to the battery tab 21 having the opposite polarity of adjacent unit battery cells 10 such that the plurality of unit battery cells 10 are electrically connected in series or in parallel. Herein, the portions where the positive and negative battery tabs 21 are interconnected are referred to as battery tab connection portions (not shown).

The upper cover 80 seals the upper surface of the battery module 100 in which the battery module 100 is mounted among the plurality of battery tab connection portions (not shown) (for example, an automobile or The positive and negative power lines of the generator) may be exposed to only the two battery tab connections to which the power line is connected, and the other parts may be sealed.

That is, the upper cover 80 is partially formed at one end portion and the other end portion thereof, and is formed in a structure capable of accommodating other battery tabs 21 inwards in the remaining region except the opened portion.

In addition, the upper cover 80 may be fixed to the upper surface of the battery module 100 as a screw 30 so as to be detachable from the upper surface of the battery module 100. This is a general technology that can be sufficiently implemented by the basic concept as described above, and the description and drawings for the connection configuration between the upper cover 80 and the upper surface of the battery module 100 have been omitted.

The present invention includes the configuration as described above and will be described the operation achieved through the configuration as described below.

First, the worker seats the first battery cell 20 on the rear seating portion 18 of the first fitted case 10 and the second fitted case 10 on the open rear surface of the first battery cell 20. The front seating portion 11 of ') is in close contact. In this case, the coupling protrusion 15 of the first fitting case 10 is inserted into the coupling hole 16 of the second fitting case 10 'so that the first fitting case 10 and the second fitting case 10 are fitted. The front and rear surfaces of the first battery cell 20 between the 10 'are sealed to be accommodated.

In this manner, the front surface of the second battery cell 20 'is brought into close contact with the rear seating portion 18 of the second fitted case 10', and the rear surface of the second battery cell 20 'is seated. The front seating portion 11 of the third fitted case 10 '' is in close contact. The coupling protrusion 15 of the second fitting case 10 ′ is inserted into the coupling hole 16 of the third fitting case 10 ″ to form the second fitting case 10 ′ and the first fitting case 10 ′. The three-fit case 10 '' is fixed.

As described above, according to the present invention, a single battery cell 20 is connected to one fitting case 10 as one battery cell 20 is connected to the fitting case 10 and the coupling protrusion 16 and the coupling protrusion 15 are continuously connected to each other. And to form a single battery module by fastening one or more unit battery cells as described above.

Here, the battery module has to go through the process of electrically connecting the battery tab 21. Thus, for example, the worker is positioned so that the positive battery tab 21 of the first battery cell 20 and the negative battery tab 21 of the second battery cell 20 overlap each other. Place the PC 71 in between. And the worker seats the protective plate 60 on the upper side of the bent surface 212 and the end of the support means by communicating the protective plate 60, PC 71 and the two bent surface 212 with the screw 30 Insert and fix so as to communicate with (40).

The worker fixes the protective cap 50 to the upper surface of the battery module 100 after fixing the safety member 70 and the protective plate 60 as described above. In this case, the protective cap 50 is exposed to the upper surface of the battery module 100 as only the plurality of through-holes (not shown) is formed so that the battery tab 21 is exposed. do.

In addition, the worker fixes the upper cap 80 to the upper surface of the battery module 100 after fixing the protective cap 50. In this case, the upper cover 80 is formed to expose one battery tab connection part (not shown) on one side and the other side, and is fixed to an upper surface of the battery module 100 so that the remaining connection part can be accommodated inside. .

The completed battery module 100 is mounted on a vehicle or a motorcycle or a large-capacity mechanical device, and positive (+) and negative (-) portions are connected to two battery tabs 21 exposed by the upper cover 80. When the power line is connected, the power can be supplied.

In addition, the battery module 100 is installed in a vehicle or other device that requires a large amount of power, even when a metallic conductor falls on the upper surface of the battery module 100 during operation, the power supply of the power by the protective plate 60 and the protective cap 50 Short is not generated because it is blocked.

According to the present invention, as the PCB and the protection circuit are configured between the battery tabs in the battery module 100, the voltage applied to the battery tab is applied to the other battery tabs through the protection circuit. Therefore, according to the present invention, when an abnormal voltage such as an overvoltage is generated in the battery tab 21, the protection circuit 73 detects this and turns off the power supply between the battery tabs 21 as the protection circuit 73 turns off the battery module 100. ) Can be extended.

Although the present invention has been described in detail with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims.

10, 10 '10'': Case 11: Front seat
12: heat sink 13: guide frame
14: coupling end 15: coupling protrusion
16: coupler 17: casing body
18: rear seat 20, 20 '20'': battery cell
21: battery tab 22: body
211 vertical plane 212 bending surface
213: fastener 30: screw
40: support means 50: protective cap
60: protection plate 70: safety member
71: PCB 72: Through Hole
73: protection circuit 80: upper cover

Claims (8)

A battery cell in which battery tabs for inputting and outputting positive and negative power are formed; And
It includes a case fitted to accommodate any one of the front or rear of the battery cell is in close contact,
The fitted case is
A casing body formed of an insulated plastic-based material and formed of an upright section;
A recess formed intaglio to be inward from the front and rear of the casing body so that any one of the front or rear surface of the battery cell is in close contact with the inward wall;
A coupling end protruding laterally from both sides of the casing body to extend in the vertical direction to form a pair of cross sections spaced apart from each other toward the front and the rear;
A coupling protrusion protruding from any one of a cross section facing forward and a cross section facing backward at the coupling end;
Unit battery cell having a fitting case including one or more coupling spheres formed in the groove inwardly in the cross-section of the front end or the rear end of the coupling end is not provided with the coupling projection. The method of claim 1, wherein the fitted case
At least one through-wall formed on the wall of the casing body in which the seating portion is formed, the unit battery cell having a fitting case further comprising a heat dissipation hole for radiating heat generated from the battery cell. The method of claim 1, wherein the fitted case
Protruding rearward from both sides of the casing body to guide the battery cell to be introduced by forming an upstanding wall surface with the rear surface of the casing body in which the battery cell is seated, and further guide frame to which the coupling end is fastened at the side Unit battery cell having a fitted case containing. One or more unit batteries electrically connected in series or in parallel with a fitting case in which one side of the front or rear side of the battery cell in which a battery tab for inputting and outputting positive and negative power is formed is fitted at the front and rear sides. Cell;
And a protective cap sealing an upper surface of the battery tab to be exposed upward from an upper surface of the at least one unit battery cell.
The fitted case is
A casing body formed of an insulated plastic-based material and formed of an upright section;
A recess formed intaglio to be inward from the front and rear of the casing body so that any one of the front or rear surface of the battery cell is in close contact with the inward wall;
A coupling end protruding laterally from both sides of the casing body to extend in the vertical direction to form a pair of cross sections spaced apart from each other toward the front and the rear;
A coupling protrusion protruding from any one of a cross section facing forward and a cross section facing backward at the coupling end;
A battery module having at least one unit battery cell having a fitting case including at least one coupling hole formed in the groove inwardly in the cross-section of the front end or the rear of the coupling end is not provided with the coupling projection. The method of claim 4, wherein the fitted case
A heat dissipation hole for dissipating heat generated from the battery cell by forming one or more through-holes on a wall surface of the casing body in which the seating portion is formed; And
Protruding rearward from both sides of the casing body to guide the battery cell to be introduced by forming an upstanding wall surface with the rear surface of the casing body in which the battery cell is seated, and further guide frame to which the coupling end is fastened at the side A battery module having one or more unit battery cells having a fitted case comprising. The method of claim 4, wherein the battery tab
A bent surface that is bent from an upper side of the vertical surface upright from the top of the battery cell to form a plane, and a fastening hole formed through the bent surface,
The case has at least one unit battery cell having a fitting case including a support means fixed to the upper end to support the lower end in the state that the bent surface of the battery tabs of the both sides seated on the front and rear respectively overlap each other Battery module. The method of claim 4, wherein the battery module
Electrically connected battery tabs having mutually different polarities adjacent to each other in at least one unit battery cell, wherein through-holes corresponding to the fastening holes are formed on the upper surface of the battery tabs and are fixed to the bent surface by the screws. Battery module having at least one unit battery cell having a fitted case further comprising a protective plate. The method of claim 4, wherein the battery module
Further comprising at least one of a safety member fixed between the battery tab to prevent overvoltage between the battery tab, and an upper cover for sealing the upper surface of the at least one unit battery cell to prevent contact with foreign matter to the outside. But
The safety member has a conductive metal plate formed on both sides of the PCB to apply the overvoltage between the battery tab; A through-hole formed in the PC to match the fastening hole so that the screw is in communication communication insertion; And a protection circuit that receives the voltage applied from the battery tab through the PC and turns off upon detection of an abnormal voltage to cut off energization between the battery tabs.
The top cover has a battery module having at least one unit battery cell having a fitting case for exposing only one or more battery tabs to which the positive and negative power lines are connected and the remaining area of the battery module is accommodated inside.

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