KR20170053429A - Battery Module improved impact resistance - Google Patents

Abstract

According to an embodiment of the present invention, a battery module includes: a plurality of cartridge assemblies including a secondary battery and a stacking frame storing the secondary battery, and stacked and arranged in one direction; a sensing assembly installed on at least one side part, from which an electrode of the cartridge assemblies protrudes, sensing electrical properties of the secondary battery by touching an electrode lead of the secondary battery, and including a through hole vertically penetrated; and an end plate assembly made of a hard material, covering the cartridge assemblies and the sensing assembly from the top to the bottom, and including a hollow hole, which is connected to the through hole of the sensing assembly, to be integrated with the sensing assembly as one body when a bar-shaped combination member is inserted into the hollow hole and the through hole. As such, the present invention is capable of reducing the weight of a mounting part of the battery module.

Description

[0001] The present invention relates to a battery module having improved impact resistance,

The present invention relates to a battery module, and more particularly, to a battery module having a mounting reinforcing structure excellent in impact resistance.

BACKGROUND ART [0002] In recent years, secondary batteries have been widely applied not only to portable devices but also to electric vehicles (EVs) or hybrid electric vehicles (HEVs) and energy storage systems (Energy Storage Systems) driven by electric driving sources. Such a secondary battery is not only a primary advantage that the use of fossil fuel can be drastically reduced, but also produces no by-products resulting from the use of energy, and thus is attracting attention as a new energy source for enhancing environmental friendliness and energy efficiency.

In particular, a battery pack applied to an electric vehicle has a structure in which a plurality of battery modules including a plurality of unit cells are connected in series and / or in parallel to obtain high output. The unit cell includes a positive electrode and a negative electrode current collector, a separator, an active material, an electrolyte, and the like, and can be repeatedly charged and discharged by electrochemical reaction between the components.

In recent years, interest in environmentally friendly and pure electric vehicles has been increasing as regulatory movements for carbon emissions have accelerated in major automobile producers such as Europe, USA and Korea.

A pure electric vehicle (EV) uses the electric energy of a battery completely. For this reason, the development of high capacity battery pack products is increasing, and the battery modules constituting the recent high capacity battery packs have increased in size and weight compared to the conventional battery modules. Battery modules are increasingly larger in size and weight than ever before, and are increasingly required to enhance structural stability for stable energy storage and operation. Particularly, since the battery module operates in a traveling environment of a car subjected to impact and vibration, it is necessary to strengthen the rigidity of the mounting portion between the components of the battery module and the pack case or the battery module in order to ensure the structural safety of the battery module.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a battery module with improved structural stability by increasing the rigidity of a mounting portion between components of the battery module.

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.

A battery module according to an aspect of the present invention includes: a plurality of cartridge assemblies having a secondary battery and a stacking frame for storing the secondary battery, the plurality of cartridge assemblies being stacked in one direction; A sensing assembly mounted on at least one side surface of the plurality of cartridge assemblies and sensing the electrical characteristics of the secondary battery in contact with the electrode leads of the secondary battery and having through holes formed in a vertical direction; And a sensing assembly formed of a rigid material and covering the plurality of cartridge assemblies and the sensing assembly from top to bottom and having a through hole communicating with the through hole of the sensing assembly, And an end plate assembly in which a fastening member is fitted and assembled with the sensing assembly into one body.

The sensing assembly includes a sensing board having a connection member electrically connected to the electrode lead of the secondary battery and a cover for sensing board mounted on the outer side of the sensing board to protect the sensing board, And may be formed on the cover for the sensing board.

Two through-holes are formed on both edge portions of the cover for the sensing board, and the cover for the sensing board has a plurality of layered ribs arranged in layers at predetermined intervals along the height direction of the through-hole .

The cover for the sensing board may further include a plurality of grid-shaped ribs that form a lattice structure between the two through-holes.

At least one of the layered rib and the grid-shaped rib may be formed on both the front surface and the rear surface of the cover for the sensing board.

The sensing assembly is mounted on a left side surface and a right side surface of the plurality of cartridge assemblies, and the end plate assembly includes a first end plate integrally formed with the upper surface portion, the front surface portion, and the rear surface portion, And a pair of second end plates provided to surround the sensing assembly.

The second end plate has a fastening flange positioned above the through-hole of the sensing assembly, and the through-hole can be formed in the fastening flange.

The first end plate and the second end plate may have welding portions welded or bonded to each other.

The bar-shaped fastening member may include a metal bushing inserted into the through-hole in a hollow pipe type and a long bolt passing through the bushing to assemble the end plate assembly and the sensing assembly into one body have.

The sensing assembly may be detachable to cover the entire one side of the plurality of cartridge assemblies.

The plurality of cartridge assemblies may be configured such that the secondary batteries protruded in both directions and the cartridges housing the secondary batteries are stacked in a row.

An insulating sheet and at least one cooling plate made of a thermally conductive metal material may be disposed on the lower portion of the plurality of cartridge assemblies, the insulating sheet being made of at least one polycarbonate material.

According to another aspect of the present invention, a battery pack including the above-described battery module can be provided.

According to still another aspect of the present invention, an automobile including the battery module described above can be provided.

According to an aspect of the present invention, the rigidity of the mounting portion between the components of the battery module is increased, so that the impact resistance of the battery module can be improved.

According to another aspect of the present invention, the weight of the mounting portion of the battery module can be reduced.

According to still another aspect of the present invention, the components of the battery module can be bound to one body by one fastening member, so that ease of assembly and impact resistance of the battery module can be improved.

1 is a perspective view of a battery module according to an embodiment of the present invention.
Fig. 2 is a perspective view showing a state in which the end plate assembly is disassembled in Fig. 1;
FIG. 3 is a perspective view showing a state in which the sensing assembly and the base plate are further disassembled in FIG. 2. FIG.
4 is a perspective view illustrating the sensing assembly of FIG.
5 is a front view of the cover for the sensing board of FIG.
6 and 7 are front and rear perspective views of the cover for the sensing board of FIG.
8 is a perspective view illustrating a sensing board, a cover for a sensing board, and a second end plate in an exploded state according to an embodiment of the present invention.
FIG. 9 is a perspective view of FIG. 8. 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 interpreted in accordance with the 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 the present 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, various equivalents It should be understood that water and variations may be present.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention. FIG. 2 is a perspective view illustrating a state in which the end plate assembly is disassembled in FIG. 1. FIG. Fig.

Referring to these drawings, a battery module 100 according to an embodiment of the present invention includes a plurality of cartridge assemblies 110, a sensing assembly 120, and an end Plate assembly 130, and a rod-shaped fastening member 140 that integrally binds them.

As will be described in detail below, the battery module 100 of the present embodiment is configured such that the plurality of cartridge assemblies 110, the sensing assemblies 120 and the end plate assemblies 130 are organically connected and fastened, and the mechanical strength of the fastening portions is enhanced Therefore, the structural stability against external shock and vibration environments is increased.

Referring to each constitution of the battery module 100, the cartridge assembly 110 may include one or more secondary batteries and a stacking frame 111.

The secondary battery included in the cartridge assembly 110 may be a pouch type secondary battery although not shown in detail. In this case, the pouch-type secondary batteries may be stacked in the Y-axis direction in a state of being housed in the stacking frame 111 in one direction, for example, as shown in FIG. 2 and FIG. At this time, the electrode lead (L) portion of the secondary battery can be exposed to the outside of the stacking frame 111 through the opening of the stacking frame 111, as shown in Fig.

Of course, unlike the drawing, the secondary battery can be stacked in a different direction such as the vertical direction, so that the scope of the present invention can not be limited to the shape of the drawing.

The stacking frame 111 serves as a means for stacking the secondary cells, and prevents the flow of the secondary cells by holding the secondary cells. The stacking frame 111 serves to guide assembly of the secondary cells. For reference, the stacking frame 111 may be replaced with another term such as a cartridge.

Meanwhile, the stacking frame 111 of the present embodiment can be manufactured in the form of a rectangular ring having a hollow central portion. In this case, four corners of the stacking frame 111 may be located on the outer peripheral portion of the secondary battery. And the empty central portion of the stacking frame 111 can be covered by the cooling fin 112. [ Here, the cooling fin 112 may be implemented as a plate of a thermally conductive material such as aluminum. The cell body of the secondary battery is brought into contact with the cooling fin 112, so that the heat exchange between the secondary battery and the cooling fin 112 can be performed.

A plurality of cartridge assemblies 110 are provided, and a plurality of cartridge assemblies 110 may be stacked on each other as shown in FIGS. In this embodiment, the battery module 100 includes six cartridge assemblies 110, but may include five or less or seven or more cartridge assemblies 110 depending on the design capacity.

The sensing assembly 120 transmits sensing information about an electrical characteristic such as a voltage of the secondary battery to another device (not shown) outside the battery module 100. For example, a device such as a battery management system (BMS) may be connected to the battery module 100 to control operation of the battery module 100, such as charging or discharging. At this time, the sensing assembly 120 may be connected to the BMS to provide sensed voltage information of the secondary battery to the BMS, and the BMS can control the battery module 100 based on such information.

The sensing assembly 120 may be mounted on at least one side of the plurality of cartridge assemblies 110 to be electrically connected to the electrode leads L of the secondary battery. For example, the sensing assembly 120 may be mounted on a portion of the secondary battery where the electrode leads L are exposed. In the case of the battery module 100 of the present embodiment, the positive electrode lead and the negative electrode lead are pouch- A pair of sensing assemblies are mounted on both side portions of the plurality of cartridge assemblies 110, one by one.

Here, each sensing assembly 120 is detachably coupled to a corresponding side portion of the plurality of cartridge assemblies 110, and is configured to cover the entire side surfaces of the plurality of cartridge assemblies 110. For example, as shown in FIG. 2, a plurality of cartridge assemblies 110 may be integrally supported by the sensing assembly 120 by combining the sensing assembly 120 and the plurality of cartridge assemblies 110.

In addition, the sensing assembly 120 has a through hole 123 penetrating in the vertical direction. The rod-shaped fastening member 140 may be inserted into the through-hole 123 to pass therethrough. The sensing assembly 120 may be coupled to the second end plate 132 to be described later by the bar-shaped coupling member 140 and at least a portion of the sensing assembly 120 may be coupled to the second end plate 132 At least a portion thereof can be covered. The first end plate 131, which will be described later, may be welded or bonded to the second end plate 132.

Since the sensing assembly 120 is a component electrically connected to the plurality of cartridge assemblies 110, the sensing assembly 120 must behave like a rigid body with a plurality of the cartridge assemblies 110 to withstand external shocks and vibrations. Otherwise, the battery module 100 may be damaged structurally and electrically. Therefore, in this embodiment, the sensing assembly 120 is designed in such a direction as to be able to disperse and absorb external impacts and increase the binding force with the second end plate 132. More detailed structural features of this sensing assembly 120 will be described later for convenience of explanation.

Referring to FIG. 3, the battery module 100 according to the present embodiment further includes an insulation sheet 160, a cooling plate 170, and a base plate 150.

The insulating sheet 160, the cooling plate 170, and the base plate 150 may be sequentially disposed below the plurality of cartridge assemblies 110.

The insulating sheet 160 may be made of a material such as polycarbonate having excellent electrical insulation and thermal conductivity. This insulating sheet 160 serves to effectively transfer the heat from the cooling fins 112 to the cooling plate 170 together with the insulation of the battery module 100. The cooling plate 170 is made of a thermally conductive material such as aluminum to absorb the heat of the plurality of cartridge assemblies 110.

The base plate 150 is a plate-shaped structure disposed at the bottom of the plurality of cartridge assemblies 110 to support the plurality of cartridge assemblies 110 at the bottom. The base plate 150 may be in the form of a plate having a substantially large area and may cover a plurality of cartridge assemblies 110.

The base plate 150 may support a plurality of cartridge assemblies 110 from below and protect the cartridge assemblies 110 from external impacts. Therefore, the base plate 150 may be made of a metal such as steel to ensure rigidity.

The endplate assembly 130 may be a rigid structure in the form of a lid in which the plurality of cartridge assemblies 110 and sensing assembly 120 are overlaid over. The end plate assembly 130 includes a through hole 134 communicating with the through hole 123 at a position vertically corresponding to the through hole 123 of the sensing assembly 120. The rod-like fastening member 140 may be inserted into the through-hole 134 and the through-hole 123 to be assembled with the sensing assembly 120 into a single body.

The end plate assembly 130 according to the present embodiment may include a first end plate 131 and a pair of second end plates 132.

Referring to FIGS. 2 and 3, the first end plate 131 includes a front surface portion, a front surface portion, a front surface portion, and a rear surface portion of the plurality of cartridge assemblies 110 when the sensing assembly 120 is mounted, And a rear surface integrally enclosed. And a pair of second end plates 132 may be provided to surround at least a portion of the corresponding sensing assembly 120, respectively. 1, the end plate assembly 130 has a partially open structure so that the external connector C and the input / output terminal T of the sensing assembly 120 are exposed to the outside of the end plate assembly 130 . In this case, the connection between the external connector C and the input / output terminal T and the external device (not shown) can be facilitated.

The first end plate 131 and the second end plate 132 of the present embodiment may be coupled to each other by a welding method or a bonding method. 2 and 3, the first end plate 131 and the second end plate 132 have welding portions w1 and w2 that can be welded or bonded to each other.

For example, the second endplate 132 may be first assembled to the sensing assembly 120 assembly. Here, the second end plate 132 may be bound to each other by the sensing assembly 120 and the rod-shaped fastening member 140.

Then, the first end plate 131 can be assembled to the plurality of cartridge assemblies 110. At this time, the welded portion w1 of the first end plate 131 is superimposed on the welded portion w2 of the second end plate 132. The end plate assembly 130 can be realized by welding the welded portions w1 and w2 of the first end plate 131 and the second end plate 132 together.

According to this method, since the adhesion between the first and second end plates 132 and the plurality of cartridge assemblies 110 and the sensing assembly 120 is increased, the clearance between the components can be reduced. The end plate assembly 130 may be integrally formed. In this case, however, the manufacturing process can be complicated. Also, in terms of assembling completion, the first and second end plates 132 are separately manufactured, ) Welding or bonding them during assembly may be beneficial in reducing assembly tolerances.

Fig. 4 is a perspective view showing the sensing assembly of Fig. 3, Fig. 5 is a front view of the cover for the sensing board of Fig. 4, Figs. 6 and 7 are front and rear perspective views of the cover for the sensing board of Fig. FIG. 9 is a perspective view of the sensing board, the cover for sensing board, and the second end plate according to an embodiment of the present invention.

Hereinafter, the structure of the sensing assembly 120 will be described in detail with reference to FIGS. 4 to 9. FIG.

As described above, in the present embodiment, two sensing assemblies 120 are disposed on both side portions of the plurality of cartridge assemblies 110, as described above. Here, the two sensing assemblies 120 may be electrically connected to each other by a connecting member such as a cable, though not shown in detail.

1, the sensing assembly 120 located on the left side has an external connector and the sensing assembly 120 located on the right side has an input / output terminal. Aside from these points, the structural features of the left and right side sensing assemblies 120 are almost the same, so the description of the left side sensing assembly 120 will be replaced with respect to the right side sensing assembly 120.

The sensing assembly 120 of the present embodiment includes a sensing board 121 and a cover 122 for a sensing board, as shown in FIGS.

The sensing board 121 includes a plurality of sensing members such as a plurality of bus bars that are electrically connected to the electrode leads L of the secondary battery, a circuit board, an external connector C, an input / output terminal T, Assembly.

The sensing board 121 is sized to cover all the sides of the plurality of cartridge assemblies 110 and can be detachably coupled to the plurality of cartridge assemblies 110. A plurality of bus bars and circuit boards, which can be electrically connected to the electrode leads L of the secondary battery, may be provided on the inner surface of the sensing board 121.

And a bracket 121a for the input / output terminal T may be provided on the outer surface of the sensing board 121. [ 4 and 8, the bracket 121a is protruded from the outer surface of the sensing board 121 and has a bracket hole 121b formed in a vertical direction. And a cover 122 for the sensing board may be mounted on the lower portion of the bracket. The electrode leads L of the secondary battery (see FIG. 3) are directly connected to the sensing board 121 in the lower area with reference to the input / output terminal terminal. The sensing board cover 122 may be mounted so as to completely surround the sensing board 121, which is directly connected to the electrode lead L,

The sensing board cover 122 is a plate-like structure that protects the sensing board 121 from an external impact and covers at least a part of the outer periphery of the sensing board 121. In addition, the sensing board cover 122 protects the sensing board 121 and provides a place where the rod-shaped fastening member 140 can be inserted and supported.

The sensing board cover 122 may be made of reinforced plastic having excellent electrical insulation and impact resistance. Of course, the sensing board cover 122 may be made of other materials having excellent insulation and impact resistance.

More specifically, referring to FIGS. 4 to 7, the sensing board cover 122 according to the present embodiment includes two through holes 123, one on each of the two edge portions. The sensing board cover 122 includes a plurality of layered ribs 124 arranged in a layered manner at predetermined intervals along the height direction of the two through holes 123 and a plurality of layered ribs 124 arranged between the two through holes 123 And a plurality of grid-shaped ribs 125 that form a lattice structure.

The two through holes 123 may be formed in a cylindrical shape hollow in the height direction of the sensing board cover 122.

The plurality of layered ribs 124 may be coupled to the cylindrical outer circumferential surface 126 of the through hole 123 as shown in FIGS. The plurality of layered ribs 124 support the through-holes 123 to suppress deformation of the through-holes 123. The plurality of grid-shaped ribs 125 occupy the largest area in the sensing board cover 122, and the lateral ribs 125a and the longitudinal ribs 125b are connected to each other and are lattice-woven. For example, the grid-shaped ribs 125 can distribute impacts and vibrations by distributing the load acting on one of the lateral ribs 125a to the neighboring grid-shaped ribs 125 by the longitudinal ribs 125b.

Thus, many of these layered ribs 124 and lattice ribs 125 may be less weight less than a simple solid structure and may have better impact dispersion and mechanical stiffness. Particularly, as the size (size) of the sensing board cover 122 increases, it is economically feasible to construct the sensing board cover 122 by applying the layered ribs 124 and the grid-shaped ribs 125 have.

In addition, a plurality of layered ribs 124 and a grid-shaped rib 125 may be formed on both the front and back surfaces of the cover 122 for the sensing board. 6 and 7, the wall 127 is thinly formed in the form of a plate and the layered ribs 124 and the lattice-shaped ribs 124 are formed on the front and back surfaces of the wall body 127 125 are protruded. Further, a socket 128 for mounting a temperature measurement sensor may be further provided on the rear surface of the sensing board cover 122. A temperature measurement sensor (not shown) is configured to be mountable to the temperature measurement sensor operation wear sensor and can be inserted into the battery module 100. When the temperature is measured by the temperature measuring sensor, the measured temperature information may be transmitted to the BMS outside the battery module 100 and used to control the battery module 100.

Next, with reference to FIGS. 8 to 9, a description will be made of a combined structure of the sensing assembly 120 and the second end plate 132. FIG.

The sensing board cover 122 may be mounted on the sensing board 121 from below to above. At this time, the upper surface of the sensing board cover 122 can be fitted to the lower bracket of the sensing board 121, and the through hole 123 and the bracket hole 121b can be in a communicated position.

As shown in Fig. 8, the second end plate 132 has a fastening flange 133. The through hole 134 is formed in the fastening flange 133. The second end plate 132 can be mounted to the sensing assembly 120 from the top to the bottom so that the portion of the fastening flange 133 covers the upper end of the bracket 121a of the sensing board. At this time, the center of the through hole 134 of the fastening flange 133 and the through hole 123 of the sensing assembly 120 are positioned on the coaxial line.

On the other hand, the rod-shaped fastening member 140 may include a bushing 141 and a long bolt 142. The bushing 141 may be a hollow pipe type metal and may be configured to be inserted into the through hole 123 of the sensing assembly. By interposing the metal bushing 141 in the through hole 123, it is possible to prevent the clearance at the time of fastening the long bolt 142. Further, even if the allowable tensile strength of the long bolt, that is, the tightening strength is increased, It is possible to prevent the cover 122 for the sensing board from being damaged and to enhance the mechanical strength of the mounting portion.

The long bolt 142 may be configured to allow the body to be inserted into the bushing 141 to pass therethrough and the end of the long bolt 142 may be coupled to the nut at the lower portion of the through hole 123. The long bolt 142 is formed so that a large head portion of the fastening flange 133 of the fastening flange 133 presses the fastening flange 133 and the fastening flange 133 pushes the fastening flange 133 so that the sensing assembly 120 and the second end plate 132, .

As described above, according to the present invention, the sensing board 121, which is susceptible to impact and vibration, can be securely protected by the sensing board cover 122 and the second end plate 132. In other words, the cover 122 for the sensing board is provided with a plurality of layered ribs 124 and a lattice-shaped rib 125 to disperse the impact, and a portion of the passage hole 123 to which the long bolt 142 is fastened Can be firmly supported.

A metal bushing 141 is further inserted into the through hole 123 and then the sensing assembly 120 and the second end plate 132 are integrally coupled to each other by the long bolt 142, Since the plate and the first end plate are integrally welded, the components constituting the battery module are organically bound and behave as one rigid body, so that the impact resistance of the battery module 100 can be increased.

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 module 110: Cartridge assembly
111: stacking frame 112: cooling pin
120: sensing assembly 121: sensing board
122: Cover for sensing board 123: Through hole
124: Layered ribs 125: Grating ribs
126: cylindrical outer peripheral surface 130: end plate assembly
131: first end plate 132: second end plate
133: fastening flange 134: through hole
140: rod-shaped fastening member 141: bushing
142: long bolt 150: base plate
160: Insulation sheet 170: Cooling plate
L: electrode lead

Claims (14)

A plurality of cartridge assemblies including a secondary battery and a stacking frame for storing the secondary battery, the cartridge assemblies being stacked in one direction;
A sensing assembly mounted on at least one side surface of the plurality of cartridge assemblies and sensing the electrical characteristics of the secondary battery in contact with the electrode leads of the secondary battery and having through holes formed in a vertical direction; And
And a plurality of cartridge assemblies and sensing assemblies formed in a rigid material and covering the sensing assemblies from top to bottom, the cartridge assembly having a through hole communicating with the through holes of the sensing assembly, And an end plate assembly having a member interposed therebetween and assembled with the sensing assembly into one body. The method according to claim 1,
The sensing assembly includes a sensing board having a connection member electrically connected to an electrode lead of the secondary battery, and a sensing board cover mounted on the outer side of the sensing board to protect the sensing board,
And the through hole is formed in the cover for the sensing board. 3. The method of claim 2,
Two through-holes are formed on both edges of the cover for the sensing board,
Wherein the sensing board cover has a plurality of layered ribs arranged in layers with a predetermined spacing therebetween along the height direction of the through hole. The method of claim 3,
Wherein the cover for the sensing board further comprises a plurality of grid-shaped ribs which form a lattice structure between the two through-holes. 5. The method of claim 4,
Wherein at least one of the layered rib and the grid-shaped rib is formed on both the front surface and the rear surface of the sensing board cover. The method according to claim 1,
Wherein the sensing assembly is mounted to the left and right side portions of the plurality of cartridge assemblies,
The end plate assembly
And a pair of second end plates provided in a manner to surround the sensing assemblies so as to surround the plurality of cartridge assemblies in a manner to integrally surround the upper surface portion, the front surface portion and the rear surface portion. module. The method according to claim 6,
Wherein the second end plate has a fastening flange positioned above the through-hole of the sensing assembly, the through-hole being formed in the fastening flange. The method according to claim 6,
Wherein the first end plate and the second end plate have welding portions welded or bonded to each other. The method according to claim 1,
The bar-
A metal bushing inserted into the through hole as a hollow pipe type and an elongated bolt passing through the bushing to assemble the end plate assembly and the sensing assembly into a single body. The method according to claim 1,
Wherein the sensing assembly is detachably coupled to cover the entire one side of the plurality of cartridge assemblies. The method according to claim 1,
Wherein the plurality of cartridge assemblies are formed by stacking a secondary battery in which electrode leads protrude in both directions and cartridges housing the secondary batteries in a row. The method according to claim 1,
Wherein an insulating sheet made of at least one polycarbonate material and a cooling plate made of a thermally conductive metal material are disposed under the plurality of cartridge assemblies. 13. The battery pack according to any one of claims 1 to 12, comprising the battery module. 13. The automobile according to any one of claims 1 to 12, comprising the battery module.

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