KR101760405B1 - Battery module comprising lead cover unit for preventing short of leads of battery cells and battery pack including the same - Google Patents

Abstract

The present invention relates to a battery module capable of preventing a short circuit between electrode leads of a battery cell, and a battery pack and an automobile including the battery module.
A battery module according to an aspect of the present invention includes: a battery cell having an electrode lead; A cartridge that is stacked in a state where the battery cell is seated; And a lead cover unit of insulating material interposed between the electrode leads provided in the adjacent two battery cells to prevent contact between the electrode leads provided in the adjacent two battery cells.

Description

[0001] 1. Field of the Invention [0002] The present invention relates to a battery module and a battery pack including the lead cover unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery module, and more particularly, to a battery module and a battery pack including the battery module.

2. Description of the Related Art In recent years, demand for portable electronic products such as notebook computers, video cameras, and portable telephones has rapidly increased, and electric vehicles, storage batteries for energy storage, robots, and satellites have been developed in earnest. Are being studied actively.

The secondary rechargeable batteries are nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel- It is very popular because of its low self-discharge rate and high energy density.

These lithium secondary batteries mainly use a lithium-based oxide and a carbonaceous material as a cathode active material and an anode active material, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate each coated with such a positive electrode active material and a negative electrode active material are disposed with a separator interposed therebetween, and an outer casing, that is, a battery case, for sealingly storing the electrode assembly together with the electrolyte solution.

Generally, a lithium secondary battery can be classified into a can type secondary battery in which an electrode assembly is embedded in a metal can, and a pouch type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the casing.

In recent years, secondary batteries are widely used not only in small-sized devices such as portable electronic devices, but also in medium to large-sized devices such as automobiles and electric power storage devices. Particularly, as carbon energy is getting depleted and the interest in the environment is increasing, attention is focused on hybrid cars and electric cars worldwide, including the US, Europe, Japan, and Korea. The most important components in such hybrid vehicles and electric vehicles are battery packs that give drive power to vehicle motors. Since hybrid vehicles and electric vehicles can obtain the driving force of the vehicle through charging and discharging of the battery pack, the fuel efficiency is higher than that of the vehicle using only the engine, and the users are increasingly increasing in terms of not discharging or reducing pollutants. to be. The battery pack of the hybrid vehicle or the electric vehicle includes a plurality of battery cells, and the plurality of battery cells are connected in series and in parallel to each other to improve capacity and output.

On the other hand, when using a battery module in which a plurality of battery cells are connected in series or in parallel, it is very important to secure safety. Especially, in the case of a hybrid vehicle or an electric vehicle on which a person is traveling, the occurrence of a safety accident may be directly linked to personal injury.

One of the causes of the safety accidents that can be generated from the battery module is a short circuit between the battery cells provided in the battery module. If an electrical contact occurs between the electrode leads provided in the battery cells and a short circuit occurs, an overcurrent flows, which may lead to overheating or explosion of neighboring battery cells.

Korean Patent Publication No. 10-2014-0137044 (2014. 12. 02) Korean Patent Publication No. 10-2012-0006641 (Jan. 19, 2012)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a battery module capable of preventing a short circuit between electrode leads of a battery cell, a battery pack including the same and an automobile.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a battery module including: a battery cell having an electrode lead; A cartridge that is stacked in a state where the battery cell is seated; And a lead cover unit of insulating material interposed between the electrode leads provided in the adjacent two battery cells to prevent contact between the electrode leads provided in the adjacent two battery cells.

The lead cover unit may be coupled to the cartridge, and the cartridge may include a coupling portion for coupling the lead cover unit to one side of the main frame.

The lead cover unit may be coupled to the engagement portion of the cartridge along the stacking direction of the cartridge.

Wherein the lead cover unit includes a cover body formed to be long along the width direction of the electrode lead and a cover head extending from one end of the cover body along the longitudinal direction of the cover body, Is formed with a groove having a shape corresponding to the shape of the cover so that the cover is inserted along the direction of stacking the cartridge, and an opening through which the cover neck connecting the cover head and the cover body can pass is formed on one side of the groove .

The lead cover unit further includes a coupling hook protruding from the other end of the cover main body in a direction perpendicular to the longitudinal direction of the cover main body and having an end folded and the coupling portion includes a fastening hook Can be formed.

The lid cover unit may further include a pressing protrusion protruding perpendicularly to the longitudinal direction of the cover body, the pressing protrusion being spaced apart from the locking hook.

The lead cover unit may further include at least one protrusion protruding perpendicularly to the longitudinal direction of the cover body, and a recessed groove having a shape corresponding to the protrusion of the lead cover unit may be formed.

Wherein the cartridge has a first lead portion on which the first electrode lead of the battery cell is seated and a second lead portion on which the second electrode lead of the battery cell is seated, and the first lead portion and the second lead portion, And the coupling portion may be formed in any one of them.

Two battery cells are accommodated in the adjacent two stacked cartridges, and the lead cover unit may be interposed between electrode leads provided in each of the two battery cells accommodated in the cartridge.

According to another aspect of the present invention, there is provided a battery pack including the battery module.

According to another aspect of the present invention, an automobile may include the battery module.

According to an aspect of the present invention, since an insulated lead cover unit is interposed between electrode leads provided in adjacent battery cells, contact between electrode leads can be prevented. Therefore, it is possible to prevent a short circuit due to the contact between the electrode leads.

According to another aspect of the present invention, the lid cover unit is configured to be assembled to the cartridge, so that the lid cover unit can be easily mounted and detached as well as easily replaced.

According to another aspect of the present invention, the lead cover unit is advantageous in that it can be easily mounted and dismounted by an operator, but is not easily separated by external vibration or impact.

In addition, the present invention may have various other effects, and other effects of the present invention can be understood by the following description, and can be more clearly understood by the embodiments of the present invention.

1 is an exploded perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention.
2 is a front view of a battery module according to an embodiment of the present invention.
3 is a view illustrating a state in which a lead cover unit according to an embodiment of the present invention is interposed between electrode leads provided in two adjacent battery cells.
4 is a view showing a lead cover unit according to an embodiment of the present invention.
5 is a view showing a state before the lead cover unit is coupled with the battery cell mounted on the cartridge.
6 is a view showing a state after the lead cover unit is coupled with the battery cell mounted on the cartridge.
7 is a partially enlarged perspective view of a battery module according to an embodiment of the present invention.
Fig. 8 is a cross-sectional view of Fig. 7. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In the drawings, like reference numerals are used throughout the drawings.

The embodiments of the present invention are provided to explain the present invention more fully to the ordinary artisan, so that the shape and size of the components in the drawings may be exaggerated, omitted or schematically shown for clarity. Thus, the size or ratio of each component does not entirely reflect the actual size or ratio.

FIG. 1 is an exploded perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention, and FIG. 2 is a front view of a battery module according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a battery module according to an embodiment of the present invention includes a battery cell 100, a cartridge 200, and a lid cover unit 300.

The battery cell 100 may include an electrode lead 110. The electrode lead 110 may include a positive electrode lead and a negative electrode lead. Here, each of the electrode leads 110 is formed in a plate shape and extends to the outside of the pouch outer casing. 1 and 2, the two electrode leads 110 are provided so as to protrude from one side of the battery cell 100, that is, in the same direction. However, May be provided so as to protrude in different directions.

Also, the electrode leads 110 of each battery cell 100 may extend in the horizontal direction, and the end portions may be bent upwardly or downwardly, or may be bent in a zigzag shape.

On the other hand, the bent portion can be brought into contact with the bending portion of the electrode lead 110 of the battery cell 100 according to need. The two electrode leads 110 that are in contact with each other can be fixed to each other by welding or the like, and the battery cells 100 in the battery module can be electrically connected to each other. In this way, the electrode leads 110 provided in the adjacent battery cells 100 can be contacted as needed to form a series or parallel connection.

However, unlike the electrode leads 110, which are intended to be electrically connected as described above, electrical connection between the electrode leads 110 provided in adjacent battery cells 100 may not be intended. In this way, if electrical connection is made between adjacent electrode leads 110 that are not intended to be electrically connected, an overcurrent may occur, and the overcurrent may cause a safety accident.

Meanwhile, a plurality of the battery cells 100 may be provided, and the plurality of battery cells 100 may constitute a cell assembly as an aggregate. That is, the cell assembly may include a plurality of battery cells 100, and the plurality of battery cells 100 may be stacked in one direction, for example, as shown in FIGS. 1 and 2, in the vertical direction. At this time, the battery cell 100 can be easily stacked by a cartridge to be described later.

The cartridge 200 is a component used for stacking the battery cells 100. The cartridge 200 is configured to hold the battery cells 100 to prevent them from flowing and to stack the batteries 200 to guide assembly of the battery cells 100 . The cartridge 200 may include a main frame 210.

The main frame 210 defines the contour of the cartridge 200. That is, the main frame 210 is formed in the shape of a rectangular ring having a center portion and is made of a plastic material such as to form the rim of the cartridge 200, and the battery cell 100 is seated in the empty central portion It is possible to provide a space that can be used. Optionally, a cooling plate 220 may be provided at the central portion to cool the battery cell 100 in contact with the battery cell 100. At this time, the main frame 210 may be located at the outer periphery of the cooling plate 220. In addition, the main frame 210 may be located on the side surface of the battery cell 100 to protect the lateral direction of the battery cell 100 from the outside.

The cooling plate 220 is disposed at a central portion of the cartridge 200 and is made of a thermally conductive material such as aluminum to absorb heat generated from the battery cell 100 and then absorbed by a cooling fluid such as air Heat can be transferred.

In the cartridge 200, a portion where the electrode lead 110 of the battery cell 100 is seated can be referred to as a lead portion. That is, a portion where one of the two electrode leads 110 is seated can be referred to as a first lead portion 211, and a portion where another electrode lead is seated can be referred to as a second lead portion 212 . Here, the first and second lead portions 211 and 212 are terms for distinguishing one another from each other, and do not mean an absolute position or the like.

3 is a view illustrating a state in which a lead cover unit according to an embodiment of the present invention is interposed between electrode leads provided in two adjacent battery cells. Hereinafter, the lead cover unit will be described with reference to Figs. 1 to 3. Fig.

The lead cover unit 300 may be interposed between the electrode leads 110 of the battery cell 100 stacked in one direction. That is, the lead cover unit 300 may be interposed between the electrode leads 110 provided in the two adjacent battery cells 100 in the stacking direction. As described above, the lead cover unit 300 is interposed between the electrode leads 110 arranged at a predetermined distance in the vertical direction, so that contact between the electrode leads 110 can be prevented. Preferably, the lead cover unit 300 may be made of an insulating material. According to one embodiment, the lead cover unit 300 may be manufactured by an injection molding method, and may have insulation property as a plastic injection molding.

Preferably, the lid cover unit 300 can be engaged with the cartridge 200. Fig. According to one embodiment, the lead cover unit 300 may be coupled to one side of the main frame 210 of the cartridge 200. The cartridge 200 may have a coupling portion on one side of the main frame 210 of the cartridge 200 and the lead cover unit 300 may be coupled to the coupling portion. Meanwhile, the coupling portion may be formed on the lead portion on which the electrode lead 110 is mounted. That is, at least one of the first lead portion 211 on which the first electrode lead of the battery cell 100 is seated and the second lead portion 212 on which the second electrode lead of the battery cell 100 is seated, . In the embodiment shown in Fig. 3 and others, the engaging portion is formed in the second lead portion. At this time, the lead cover unit 300 may be coupled to the coupling portion of the cartridge 200 in the same direction as the stacking direction of the cartridge 200. With such a configuration, the lead cover unit 300 can be interposed between the stacked cartridges 200, so that the lead cover unit 300 is not easily separated from the cartridge 200 unit. The lead cover unit 300 can cover the electrode leads 110 because the lead cover unit 300 is coupled to the cartridge 200 while covering the electrode leads 110. In addition, Flow can be prevented.

FIG. 4 is a view showing a lead cover unit according to an embodiment of the present invention, FIG. 5 is a view showing a state before a lead cover unit is coupled with a battery cell mounted on the cartridge, and FIG. Fig. 3 is a view showing the state after the lead cover unit is coupled with the battery cell mounted on the cartridge. Fig.

4 to 6, the lead cover unit 300 includes a cover body 310 formed to be long along the width direction of the electrode lead 110. The lid cover unit 300 may include a cover head 320 extending from one end of the cover body 310 along the longitudinal direction of the cover body 310. Here, the portion connecting the cover body 310 and the cover head 320 may be referred to as a cover neck 330. The cover head 320 can be inserted into the groove 230 formed in the cartridge 200. [ The cover head 320 can be inserted into the groove 230 along the stacking direction of the cartridge 200, that is, along the vertical direction. Meanwhile, an opening 231 may be formed on one side of the groove 230 formed in the cartridge 200. The opening 231 opens in a horizontal direction to provide a space through which the cover neck 330 connected to the cover head 320 inserted in the groove 230 can pass. The cover head 320 may be inserted into the groove 230 in the vertical direction or may be removed from the groove 230 in the vertical direction. However, after the cover head 320 is inserted into the groove 230, the cover head 320 can not escape in the forward, backward, left and right directions, i.e., in the horizontal direction.

The lid cover unit 300 may further include a fastening hook 340 at the other end of the cover body 310. The fastening hooks 340 may protrude perpendicularly to the longitudinal direction of the cover body 310. More specifically, the cover body 310 may protrude up and down in the stacking direction of the cartridge 200 while being perpendicular to the longitudinal direction of the cover body 310. The fastening hook 340 has a bent end shape and is fastened to the fastening hook. The fastening hook 340 is caught by the fastening hook 240 formed on the cartridge 200 when the lid cover unit 300 is vertically coupled to the cartridge 200.

The lid cover unit 300 may further include a pressing protrusion 350 protruding perpendicularly to the longitudinal direction of the cover body 310 and spaced apart from the locking hook 340. The pressing protrusion 350 is spaced apart from the locking hook 340 along the longitudinal direction of the main body so that when the locking hook 340 is caught by the locking protrusion 240, So that the clamping jaw 240 is stably fixed between the clamping hook 340 and the pressing protrusion 350. The pressing protrusion 350 may be formed to protrude shorter than the locking hook 340. The distance between the locking hook 340 and the pressing protrusion 350 may be determined by considering the thickness of the locking protrusion 240 Can be determined.

The fastening hooks 340 and the pressing protrusions 350 prevent the lead cover unit 300 from vertically flowing. The locking hooks 340 and the pressing protrusions 350 prevent the lead cover unit 300 from flowing in the vertical direction and the cover head 320 described above is inserted into the groove 230, 300 in the horizontal direction. That is, when the lead cover unit 300 is coupled to the cartridge 200, the lead cover unit 300 is not easily separated from the cartridge 200 unless the operator releases the fastening hook 340.

Alternatively, the lead cover unit 300 may further include at least one protrusion (not shown) protruding perpendicularly to the longitudinal direction of the cover body 310. The projections project upward in the lamination direction of the cartridge 200 and can be coupled to the indentation grooves (not shown) of the cartridge 200. Here, the recessed groove formed in the cartridge 200 may be formed to have a shape corresponding to the shape of the projection. These protrusions and indentation grooves can assist in coupling between the lid cover unit 300 and the cartridge 200.

4 to 6, the cartridge 200 includes a coupling portion. Specifically, the engaging portion includes a groove 230 into which the cover head 320 of the lid cover unit 300 is inserted and a fastening jaw 240 to which the fastening hook 340 of the lid cover unit 300 is fastened . The groove 230 may have a shape corresponding to the cover head 320 of the lead cover unit 300 and an opening 231 smaller than the size of the groove 230 may be formed on one side of the groove 230. Is formed to allow the cover neck 330 to pass therethrough so that the cover head 320 can not pass in the horizontal direction. The fastening jaw 240 provides a fastening jaw to which the fastening hook 340 of the lead cover unit 300 can be fastened.

Alternatively, the engaging portion of the cartridge 200 may be formed with a recessed groove (not shown) into which a protrusion (not shown) of the lead cover unit 300 is inserted. The indent groove may have a number, position, and shape corresponding to the protrusions of the lead cover unit 300.

Referring again to FIG. 3, one cartridge 200, two battery cells 100b, 100c, and one lead cover unit 300 are shown. The first battery cell 100b is seated on top of the cartridge 200. [ When the battery cell 100b is seated on the cartridge 200, the lead cover unit 300 is coupled to the cartridge 200 while covering the electrode lead 110b of the battery cell 100b. Subsequently, a second battery cell 100c is stacked on top of the cartridge 200. [ Here, the lead cover unit 300 is interposed only between the electrode leads 110b and 110c disposed on the right side of FIG. That is, the lead cover unit is not interposed between the electrode leads 110b 'and 110c' disposed on the left side of FIG. In the embodiment of FIG. 3, no electrical contact is required between the electrode leads 110b and 110c disposed on the right side, and electrical contact is required between the electrode leads 110b 'and 110c' disposed on the left side. As described above, the lead cover unit is selectively interposed between the electrode leads which are not required to be in electrical contact with each other, thereby preventing a short circuit between the electrode leads.

FIG. 7 is a partially enlarged perspective view of a battery module according to an embodiment of the present invention, and FIG. 8 is a sectional view of FIG.

Referring to FIGS. 7, 8, 1 and 2, a battery module according to an embodiment of the present invention includes seven cartridges 200a, 200b, 200c, 200d, 200e, 200f, 200g, (100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i, 100j, 100k, 100l, 100m) and six lead cover units 300.

In this embodiment, the two cartridges 200a, 200b, 200c, 200d, 200e, and 200f are configured so that two battery cells can be seated in the remaining cartridges 200g except for the uppermost cartridge 200g. That is, one of the battery cells may be seated on the lower and upper surfaces of the remaining cartridges 200a, 200b, 200c, 200d, 200e, and 200f except for the uppermost cartridge 200g. The uppermost cartridge 200g is configured so that one battery cell 100m is seated on the lower surface thereof.

In this embodiment, the battery module includes a total of seven cartridges 200a, 200b, 200c, 200d, 200e, 200f, and 200g including the uppermost cartridge. Therefore, the number of the battery cells 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i, 100j, 100k, 100l, Further, one lead cover unit 300 is provided between the cartridge and the cartridge, so that all of the six lead cover units 300 are provided.

For convenience, the cartridge arranged at the lowermost stage is referred to as a first cartridge 200a, and the sequentially stacked cartridges are referred to as second, third, fourth, fifth, sixth and seventh cartridges 200b, 200c, 200d, 200e, 200f, 200g). First, one battery cell 100a is seated on the lower portion of the first cartridge 200a, and one battery cell 100b is seated on the upper portion of the first cartridge 200a. The right electrode leads 110a and 110b of the two battery cells 100a and 100b which are seated on the first cartridge 200a are configured to contact each other. Alternatively, the left electrode leads 110a 'and 110b' of the two battery cells 100a and 100b mounted on the first cartridge 200a are configured not to contact each other. The left electrode lead 110b 'of the battery cell 100b seated on the upper portion of the first cartridge 200a is connected to the left electrode lead 110c of the battery cell 100c seated on the lower portion of the second cartridge 200b '.

In the second cartridge 200b, the battery cells 100c and 100d are seated on the upper and lower sides, respectively, like the first cartridge 200a. The right electrode leads 110c and 110d of the two battery cells 100c and 100d are configured to be in contact with each other. The left electrode leads 110c 'and 110d' of the two battery cells 100c and 100d, which are seated on the second cartridge 200b, are configured not to contact each other. The left electrode lead 110d 'of the battery cell 100d seated on the upper portion of the second cartridge 200b is connected to the left electrode lead 110e' of the battery cell 100e seated on the lower portion of the third cartridge 200c, As shown in FIG.

The third, fourth, fifth, and sixth cartridges 200c, 200d, 200e, and 200f are similarly configured. However, the seventh cartridge 200g stacked on the uppermost part has one battery cell 100m on its bottom, but the battery cell is not seated on the top. The right electrode lead 110m of the battery cell 100m seated on the lower portion of the seventh cartridge 200g does not contact the other electrode leads of the battery module. The left electrode lead 110m 'of the battery cell 100m placed under the seventh cartridge 200g is connected to the left electrode lead 110l' of the battery cell 100l which is seated on the top of the sixth cartridge 200f. Lt; / RTI >

Here, in the case of the right electrode lead, mutual contact is intended between the battery cells which are respectively seated on the upper and lower sides of one cartridge, but not the battery cells which are seated on the upper or lower side of the adjacent cartridge. Therefore, the right electrode leads of the battery cells interposed between the two cartridges may contact each other and cause an overcurrent due to a short circuit. Therefore, the lead cover unit is interposed between the right electrode leads of the battery cells interposed between the two cartridges to prevent contact between the electrode leads.

Although not shown in the drawings for the sake of convenience, the battery module according to the present invention may further include an inlet duct and an outlet duct, in addition to the battery cell, the cartridge and the lead cover unit.

Here, the inflow duct may be provided in an opening portion of the cooling passage formed in the cartridge, and can function as a space and a passage for allowing the fluid to flow into the cooling passage. The outlet duct may be provided in another opening portion of the cooling passage formed in the cartridge, and may function as a space and a passage for allowing the fluid flowing in the cooling passage to flow out of the battery module. The cartridge of the cell assembly according to an embodiment of the present invention may have an opening formed in a side surface of the main frame, and the inlet duct and the outlet duct may be provided on the side where the opening is formed, respectively. On the other hand, the inlet duct and the outlet duct may be provided with a fan to facilitate the flow of the cooling fluid.

The battery pack according to the present invention may include at least one battery module according to the present invention. In addition, the battery pack according to the present invention may include a case for accommodating such a battery module, various devices for controlling charge and discharge of the battery module, such as a battery management system (BMS), a current sensor, a fuse, . ≪ / RTI >

The battery module according to the present invention can be applied to an automobile such as an electric car or a hybrid car. That is, the automobile according to the present invention may include a battery module according to the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

In the present specification, when terms such as upward, downward, leftward, rightward, forward, and backward are used, these terms are for convenience of explanation only and are not limited to the position of the object to be viewed or the position of the observer It is apparent to those skilled in the art that the present invention is not limited thereto.

100: battery cell 110: electrode lead
200: Cartridge 210: Main frame
211: first lead portion 212: second lead portion
220: cooling plate 300: lead cover unit
310: cover body 320: cover head
330: cover neck 340: fastening hook
350: pressing projection 230: groove
231: opening 240: fastening jaw

Claims (12)

delete delete delete delete A battery cell having an electrode lead;
A cartridge that is stacked in a state where the battery cell is seated; And
And a lead cover unit of insulating material interposed between the electrode leads provided in the adjacent two battery cells to prevent contact between the electrode leads provided in the adjacent two battery cells,
The cartridge includes a lead portion on which an electrode lead of the battery cell is seated on one side of a main frame, and a coupling portion for coupling the lead cover unit to the lead portion,
Wherein the lead cover unit is coupled to the coupling portion of the cartridge along the stacking direction of the cartridge so as to cover the electrode lead of the battery cell,
Wherein the lead cover unit includes a cover body formed to be long along the width direction of the electrode lead and a cover head extending from one end of the cover body along the longitudinal direction of the cover body,
Wherein the coupling portion is formed with a groove having a shape corresponding to the cover head so that the cover head is inserted along the stacking direction of the cartridge and a cover neck for connecting the cover head and the cover body is formed on one side surface of the groove, Wherein the cover head is horizontally opened so that the cover head can not escape in a horizontal direction after being inserted into the groove.
6. The method of claim 5,
The lead cover unit further includes a coupling hook protruding from the other end of the cover main body in the longitudinal direction of the cover main body,
Wherein the engaging portion is formed with a fastening jaw for fastening the fastening hook.
The method according to claim 6,
Wherein the lead cover unit further comprises a pressing projection projecting perpendicularly to the longitudinal direction of the cover body and spaced apart from the fastening hook.
8. The method of claim 7,
The lead cover unit may further include at least one projection projecting perpendicularly to the longitudinal direction of the cover body,
And a recessed groove having a shape corresponding to the projection of the lead cover unit is formed.
6. The method of claim 5,
Wherein the cartridge has a first lead portion on which the first electrode lead of the battery cell is seated and a second lead portion on which the second electrode lead of the battery cell is seated, and the first lead portion and the second lead portion, And the coupling portion is formed in any one of the first and second battery modules.
6. The method of claim 5,
The two adjacent stacked cartridges contain two battery cells,
Wherein the lead cover unit is interposed between electrode leads provided in each of two battery cells accommodated in the cartridge.
A battery pack comprising the battery module according to any one of claims 5 to 10.
An automobile comprising a battery module according to any one of claims 5 to 10.

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