Battery module with sealing structure

Abstract

The present disclosure relates to a battery module. A battery module according to one embodiment of the present disclosure may include: a first end plate and a second end plate disposed on both sides of a plurality of battery assemblies; and the supporting rod is connected with the first end plate and the second end plate.

Description

Technical Field

[0001] The present disclosure relates to a battery module with a sealed structure. In particular, the present disclosure relates to a battery module with a sealed structure, which includes a plurality of battery assemblies. Background Art

[0002] Generally, when a fire occurs inside a battery module, a battery pack, an energy storage system (ESS), etc., a fire extinguishing device is used to extinguish the fire. The method of extinguishing the fire using the fire extinguishing device is a method of injecting water or a fire extinguishing agent into the fire source through a spring cooler, a water cooling pipe, etc. For this purpose, the fire extinguishing device can be provided inside or outside the battery module, the battery pack, the energy storage system, etc.

[0003] Alternatively, the fire can be extinguished by a sealing structure. The method of extinguishing a fire by a sealing structure is a method of extinguishing a fire by blocking the inflow of oxygen. To this end, the sealing structure can be applied to a battery module, a battery pack, an energy storage system, etc. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] According to one aspect of the present disclosure, a fire occurring inside a battery assembly can be suffocated and extinguished.

[0006] According to one aspect of the present disclosure, a battery assembly may be pressurized by a support bar to seal the battery assembly.

[0007] According to one aspect of the present disclosure, a gasket or a spacer may be provided between two adjacent battery assemblies among a plurality of battery assemblies, and the gasket or the spacer may pressurize the battery assemblies.

[0008] (II) Technical solution

[0009] According to the present disclosure, a battery module may include: a plurality of battery assemblies stacked on each other in one direction; a first end plate and a second end plate, respectively arranged on both sides of the plurality of battery assemblies in the one direction; and a first support rod connecting the first end plate and the second end plate, each of the plurality of battery assemblies includes: a battery cell; a shell accommodating the battery cell and forming an opening on one side; and a first support component coupled to the opening, the first support rod being arranged adjacent to the opening of the shell to pressurize the first end plate and the second end plate.

[0010] (III) Beneficial effects

[0011] According to one embodiment of the present disclosure, a battery module that can suffocate and extinguish a fire occurring in a battery cell may be provided.

[0012] According to one embodiment of the present disclosure, a battery module having a structure in which a battery cell is sealed by a compressive force of a support bar may be provided.

[0013] According to one embodiment of the present disclosure, there may be provided a battery module including a gasket or a spacer disposed between two adjacent battery assemblies among a plurality of battery assemblies to pressurize the battery assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 and Figure 2 is a diagram showing a battery module 10 according to one embodiment of the present disclosure.

[0015] Figure 3 yes Figure 2 1 is a cross-sectional view of the battery module 10 taken along line AA′.

[0016] Figure 4 It is shown Figure 3 sectional view of a battery assembly 100.

[0017] Figure 5 It is shown Figure 4 1 is a cross-sectional view of a housing 110 of a battery assembly 100.

[0018] Figure 6 It is shown Figure 4 1 is a cross-sectional view of a first support member 130 of a battery assembly 100.

[0019] Figure 7 It is shown Figure 3 6 is a cross-sectional view of a first pad 610 of pad 600 .

[0020] Figure 8 It is shown Figure 3 600 is a cross-sectional view of a second pad 620 .

[0021] Fig. 9 It is shown Figure 3 700 is a cross-sectional view of a first spacer 710 .

[0022] Fig.10 It is shown Figure 2 FIG. 2 is a diagram of a housing 200 (including a battery assembly 100 ).

[0023] Fig.11 is shown in conjunction with Figure 2 FIG. 2 is a diagram of a housing 200 and an end plate 300 of a first support rod 400 and a second support rod 500 .

[0024] Fig.12 is shown in conjunction with Fig.11 FIG. 5 is a diagram showing surface pressure areas C1, C2, C3, and C4 of the first support rod 500 connected to the end plate 300. FIG.

[0025] Fig.13 It is shown Figure 2 Magnified view of part B. DETAILED DESCRIPTION

[0026] Below, we will refer to Figures 1 to 13 The present disclosure is described in detail. However, this is only exemplary, and the present disclosure is not limited to the specific embodiments described by way of example.

[0027] Figure 1 and Figure 2 is a diagram showing a battery module 10 according to one embodiment of the present disclosure. Figure 3 yes Figure 2 1 is a cross-sectional view of the battery module 10 taken along line AA′.

[0028] The battery module 10 may include a battery assembly 100. The battery module 10 may include a plurality of battery assemblies 100.

[0029] The battery module 10 may include a housing 200. The housing 200 may be formed to extend from one end 201 to the other end 202. For example, the one end 201 of the housing 200 may be the left end of the housing 200, and the other end 202 of the housing 200 may be the right end of the housing 200. The length direction of the housing 200 may be the left-right direction.

[0030] The housing 200 may accommodate the battery assembly 100. The housing 200 may accommodate a plurality of battery assemblies 100. For example, the housing 200 may accommodate the battery assemblies 100 disposed at the upper and lower sides of the housing 200, respectively. The housing 200 may be closely attached to the front and rear of the battery assembly 100.

[0031] The battery module 10 may include a plurality of housings 200. The plurality of housings 200 may be stacked facing each other in one direction. For example, the plurality of housings 200 may be stacked facing each other in the front-to-back direction. Therefore, the plurality of battery assemblies 100 may be stacked facing each other in the front-to-back direction. The plurality of battery assemblies 100 stacked in the front-to-back direction may be referred to as a battery pack. The battery pack may be stacked in the up-down direction. For example, the battery pack may be stacked in two columns in the up-to-down direction.

[0032] The front-to-back direction may refer to the direction in which the housing 200 or the battery assembly 100 is stacked, the up-down direction may refer to the direction in which the battery pack is stacked, and the left-right direction may refer to the length direction of the housing 200 .

[0033] The battery module 10 may include first and second support bars 400 and 500. Each of the first and second support bars 400 and 500 may include a bolt and a nut (not shown). The first and second support bars 400 and 500 may be coupled to the plurality of housings 200. The first and second support bars 400 and 500 may penetrate the plurality of housings 200 in the front-to-back direction and be bolted. The first and second support bars 400 and 500 may pressurize the plurality of housings 200 in the front-to-back direction.

[0034] The first support bar 500 may be disposed between two battery assemblies 100 arranged in the up-down direction. The first support bar 500 may pressurize the plurality of battery assemblies 100 in the front-rear direction.

[0035] The battery module 10 may include a pad 600 and a spacer 700. The pad 600 or the spacer 700 may be disposed between adjacent two of the plurality of housings 200. For example, the pad 600 and the spacer 700 may be alternately disposed in the front-rear direction.

[0036] The pad 600 may include first, second, third, and fourth pads 610, 620, 630, and 640. The first, second, third, and fourth pads 610, 620, 630, and 640 may be formed to extend in the left-right direction. The first, second, third, and fourth pads 610, 620, 630, and 640 may be disposed between two battery assemblies 100 adjacent in the front-to-back direction. The first, second, third, and fourth pads 610, 620, 630, and 640 may be spaced apart in the up-down direction.

[0037] The first and second pads 610 and 620 may contact the battery assembly 100 disposed on the upper portion of the housing 200. The first pad 610 may contact the upper side of the battery assembly 100 disposed on the upper portion of the housing 200, and the second pad 620 may contact the lower side of the battery assembly 100 disposed on the upper portion of the housing 200.

[0038] The third and fourth pads 630 and 640 may contact the battery assembly 100 disposed at the lower portion of the housing 200. The third pad 630 may contact the upper side of the battery assembly 100 disposed at the lower portion of the housing 200, and the fourth pad 640 may contact the lower side of the battery assembly 100 disposed at the lower portion of the housing 200.

[0039] The first support bar 500 may be disposed between the second pad 620 and the third pad 630. When the first support bar 500 presses the plurality of battery assemblies 100 in the front-rear direction, the first, second, third, and fourth pads 610, 620, 630, and 640 may be closely attached to the battery assemblies 100. The first pad 610 and the fourth pad 640 may be formed symmetrically in the up-down direction with the first support bar 500 as a reference. The second pad 620 and the third pad 630 may be formed symmetrically in the up-down direction with the first support bar 500 as a reference.

[0040] The spacer 700 may include first and second spacers 710 and 720. The first and second spacers 710 and 720 may be formed to extend in the left-right direction. The first and second spacers 710 and 720 may be disposed between two battery assemblies 100 adjacent in the front-back direction. The first and second spacers 710 and 720 may be spaced apart in the up-down direction.

[0041] The first spacer 710 may contact the battery assembly 100 disposed at the upper portion of the housing 200. For example, the first spacer 710 may contact the upper and lower sides of the battery assembly 100 disposed at the upper portion of the housing 200.

[0042] The second spacer 720 may contact the battery assembly 100 disposed at the lower portion of the housing 200. For example, the second spacer 720 may contact the upper and lower sides of the battery assembly 100 disposed at the lower portion of the housing 200.

[0043] The first support bar 500 may be disposed between the first spacer 710 and the second spacer 720. When the first support bar 500 presses the plurality of battery assemblies 100 in the front-rear direction, the first spacer 710 and the second spacer 720 may be closely attached to the battery assemblies 100. The first and second spacers 710 and 720 may be formed symmetrically in the up-down direction with the first support bar 500 as a reference.

[0044] Figure 4 It is shown Figure 3 sectional view of a battery assembly 100. Figure 3 1 is a diagram of one of the battery assemblies 100 disposed on an upper portion of a housing 200 .

[0045] The battery assembly 100 may include a housing 110. The housing 110 may be provided along a housing 200 (see Figure 2 ) is formed by extending in the length direction of the housing 110. A portion of the lower portion of the housing 110 may be opened to form an opening portion 119. The housing 110 may form an internal space 118 communicating with the opening portion 119.

[0046] The battery assembly 100 may include a battery cell 120. The battery cell 120 may be formed to extend in a direction parallel to the length direction of the housing 200. The battery assembly 100 may include a plurality of battery cells 120. The plurality of battery cells 120 may be stacked facing each other in a front-rear direction.

[0047] A plurality of battery cells 120 may be accommodated in the inner space 118 of the case 110. For example, the case 110 may accommodate two battery cells 120. The case 110 may include a metal material, and may be a cooling plate for dissipating heat generated by the battery cells 120.

[0048] The battery assembly 100 may include a first support member 130. The first support member 130 may be formed to extend in a direction parallel to the length direction of the housing 200. The first support member 130 may be coupled to the opening portion 119 of the housing 110. The first support member 130 may block the opening portion 119 of the housing 110. A portion of the first support member 130 may be inserted into the internal space 118 of the housing 110 to maintain and support the shape of the lower side of the housing 110.

[0049] The battery assembly 100 may include a second support member 140. The second support member 140 may be formed to extend in a direction parallel to the length direction of the housing 200. The second support member 140 may be accommodated in the inner space 118 of the housing 110 and may be disposed on the upper side of the inner space 118. The second support member 140 may maintain and support the shape of the upper side of the housing 110.

[0050] Figure 5 It is shown Figure 4 1 is a cross-sectional view of a housing 110 of a battery assembly 100.

[0051] The housing 110 may include a horizontal member 111. The horizontal member 111 may be formed to extend in a direction in which the battery assembly 100 is stacked. For example, the horizontal member 111 may be formed to extend in a front-to-rear direction. The width direction of the horizontal member 111 may be the front-to-rear direction.

[0052] The housing 110 may include first and second vertical components 112 and 113. The first and second vertical components 112 and 113 may be formed by extending downward from both sides of the horizontal component 111 in the width direction of the horizontal component 111. For example, the first vertical component 112 may be formed by extending downward from the front end of the horizontal component 111, and the second vertical component 113 may be formed by extending downward from the rear end of the horizontal component 111. The thickness direction of the first and second vertical components 112 and 113 may be a direction parallel to the stacking direction of the housing 200.

[0053] The portion where the horizontal member 111 and the first vertical member 112 are connected may include a curved surface. The portion where the horizontal member 111 and the second vertical member 113 are connected may include a curved surface.

[0054] The housing 110 may include a first wing member 114. The first wing member 114 may be formed to extend from the lower end of the first vertical member 112 toward the second vertical member 113. One end of the first wing member 114 may be connected to the lower end of the first vertical member 112, and the other end of the first wing member 114 may face the second vertical member 113. The portion where the first vertical member 112 and the first wing member 114 are connected may include a curved surface.

[0055] The housing 110 may include a first elastic member 115. The first elastic member 115 may be bent downward from the other end of the first wing member 114 and extend in a direction away from the second vertical member 113. For example, the first elastic member 115 may form an acute angle with the first wing member 114. One end of the first elastic member 115 may be connected to the other end of the first wing member 114, and the other end of the first elastic member 115 may be connected to the first support member 130 (refer to Figure 3 )touch.

[0056] The housing 110 may include a second wing member 116. The second wing member 116 may be formed to extend from the lower end of the second vertical member 113 toward the first vertical member 112. One end of the second wing member 116 may be connected to the lower end of the second vertical member 113, and the other end of the second wing member 116 may face the first vertical member 112. The portion where the second vertical member 113 and the second wing member 116 are connected may include a curved surface.

[0057] The other end of the first wing member 114 and the other end of the second wing member 116 may be spaced apart from each other. An opening 119 may be formed between the other end of the first wing member 114 and the other end of the second wing member 116 .

[0058] The housing 110 may include a second elastic member 117. The second elastic member 117 may be bent downward from the other end of the second wing member 116 and extend in a direction away from the first vertical member 112. For example, the second elastic member 117 may form an acute angle with the second wing member 116. One end of the second elastic member 117 may be connected to the other end of the second wing member 116, and the other end of the second elastic member 117 may be connected to the first support member 130 (refer to Figure 3 )touch.

[0059] The first wing member 114 and the first elastic member 115 may be referred to as a first clip. The second wing member 116 and the second elastic member 117 may be referred to as a second clip. The first and second clips may be coupled to the first support member 130 (see Figure 3 ).

[0060] The horizontal member 111, the first and second vertical members 112, 113, the first and second wing members 114, 116, and the first and second elastic members 115, 117 may each be in the shape of a plate extending in a direction parallel to the length direction of the housing 200. The housing 110 may include an inner space 118, which is surrounded by the horizontal member 111, the first and second vertical members 112, 113, the first and second wing members 114, 116, and the first and second elastic members 115, 117, and is connected to the opening 119.

[0061] Figure 6 It is shown Figure 4 1 is a cross-sectional view of a first support member 130 of a battery assembly 100. The first support member 130 may be coupled to the housing 110 (see Figure 5 ) on the lower side.

[0062] The first support member 130 may include a first plate 131. The first plate 131 may be formed to extend in a direction parallel to the direction in which the housing 200 is stacked. The first plate 131 may be inserted into the housing 110 (refer to Figure 5 ) on the lower side of the internal space 118.

[0063] The first plate 131 may be connected to the first support rod 500 (see Figure 3 That is, the portion where the housing 110 is combined with the first plate 131 may be disposed adjacent to the first support rod 500. Therefore, the first support rod 500 may effectively pressurize the lower side of the housing 110 and the first plate 131.

[0064] The first plate 131 may contact inner surfaces of the first and second vertical parts 112 and 113 of the housing 110. When the first support bar 500 presses the first and second vertical parts 112 and 113, the first plate 131 may maintain and support the shape of the lower side of the housing 110.

[0065] The lower surface of the first plate 131 may contact the upper surface of the first wing member 114 and the upper surface of the second wing member 116 of the housing 110. The first plate 131 may contact the housing 110 to prevent leakage of gas generated in the inner space 118 of the housing 110. Figure 3) When a fire occurs, the sealed structure of the battery assembly 100 can be maintained. Due to the sealed structure, oxygen cannot enter the interior of the battery assembly 100, thereby preventing the fire from spreading.

[0066] The first support member 130 may include a connection member 132. The connection member 132 may be formed to extend downward from the first plate 131. The connection member 132 may penetrate between the first wing member 114 and the second wing member 116 of the housing 110. The connection member 132 may penetrate the opening 119. The connection member 132 may be formed to extend toward the outside of the housing 110.

[0067] The first support member 130 may include a second plate 133. The second plate 133 may be formed extending from the lower end of the connection member 132 in a direction parallel to the direction in which the housings 200 are stacked. The second plate 133 may be spaced apart from the first plate 131. The second plate 133 may be disposed outside the housing 110.

[0068] The first support member 130 may include a first insertion groove 134. The first insertion groove 134 may be disposed between the first plate 131 and the second plate 133, and may be formed to be recessed toward the connection member 132. For example, the first insertion groove 134 may be formed to penetrate in the left-right direction and be open at the front. The first wing member 114 and the first elastic member 115 of the housing 110 may be coupled to the first insertion groove 134. In other words, the first clip of the housing 110 may be coupled to the first insertion groove 134.

[0069] Before the first clip is coupled to the first insertion groove 134, the distance from the upper surface of the first wing member 114 to the lower end of the first elastic member 115 may be greater than the distance from the lower surface of the first plate 131 to the upper surface of the second plate 133. Therefore, when the first wing member 114 and the first elastic member 115 are coupled to the first insertion groove 134, the first elastic member 115 may be compressed toward the first wing member 114, and the lower end of the first elastic member 115 may be closely attached to the upper surface of the second plate 133. The first elastic member 115 and the second plate 133 may seal the internal space 118 of the housing 110.

[0070] The first support member 130 may include a second insertion groove 135. The second insertion groove 135 may be disposed between the first plate 131 and the second plate 133, and may be formed to be recessed toward the connection member 132. For example, the second insertion groove 135 may be formed to penetrate in the left-right direction and open at the rear. The second wing member 116 and the second elastic member 117 of the housing 110 may be inserted into the second insertion groove 135. In other words, the second clip of the housing 110 may be coupled to the second insertion groove 135.

[0071] The housing 110 and the first support member 130 may be symmetrically formed in the stacking direction of the housing 200. Therefore, the second elastic member 117 and the second plate 133 may also seal the inner space 118 of the housing 110 in the same principle as the first elastic member 115 and the second plate 133.

[0072] Figure 7 It is shown Figure 3 The first pad 610 of the pad 600 is a cross-sectional view. The first pad 610 may be disposed at two housings 110 adjacent to each other in the front-rear direction (see Figure 3 and Figure 5 The two adjacent housings 110 may be separated by a first pad 610 at a predetermined interval.

[0073] The first pad 610 may include a first pad body 611. The first pad body 611 may be formed to extend in the up-down direction. The first pad body 611 may contact the first vertical part 112 of the housing 110 disposed at the rear of the first pad 610, and may contact the second vertical part 113 of the housing 110 disposed at the front of the first pad 610. The first pad body 611 may be formed corresponding to the shapes of the first vertical part 112 and the second vertical part 113 contacting the first pad body 611. The thickness direction of the first pad body 611 may be a direction parallel to the direction in which the housing 200 is stacked.

[0074] The first pad 610 may include first and second protrusions 612 and 613. The first and second protrusions 612 and 613 may be formed by protruding from the upper side of the first pad body 611 in the direction of stacking the housing 200. For example, the first protrusion 612 may be formed by protruding forward from the upper side of the first pad body 611, and the second protrusion 613 may be formed by protruding backward from the upper side of the first pad body 611.

[0075] The first protrusion 612 may include a first contact surface 612a. The first contact surface 612a may contact a portion where the horizontal part 111 and the second vertical part 113 of the housing 110 disposed in front of the first pad 610 are connected. The first contact surface 612a may be formed corresponding to the shapes of the horizontal part 111 and the second vertical part 113 contacting the first contact surface 612a.

[0076] The second protrusion 613 may include a second contact surface 613a. The second contact surface 613a may contact a portion where the horizontal part 111 and the first vertical part 112 of the housing 110 disposed behind the first pad 610 are connected. The second contact surface 613a may be formed corresponding to the shapes of the horizontal part 111 and the first vertical part 112 contacting the second contact surface 613a.

[0077] Figure 8It is shown Figure 3 The second pad 620 of the pad 600 is a cross-sectional view. The second pad 620 may be disposed at two housings 110 adjacent to each other in the front-rear direction (see Figure 3 and Figure 5 ) and two first support members 130 adjacent to each other in the front-rear direction (refer to Figure 3 and Figure 6 The two adjacent housings 110 and the two adjacent first support members 130 may be separated by a second pad 620 at a predetermined interval.

[0078] The second pad 620 may include a central part 621. The central part 621 may be disposed between the two adjacent first support parts 130.

[0079] The second pad 620 may include a first protrusion 622. The first protrusion 622 may be formed to extend upward from the central part 621. The first protrusion 622 may be disposed between the first plates 131 of the two adjacent first support parts 130. The first protrusion 622 may contact the first vertical part 112 of the shell 110 disposed behind the second pad 620, and may contact the second vertical part 113 of the shell 110 disposed in front of the second pad 620. The first protrusion 622 may be formed corresponding to the shapes of the first vertical part 112 and the second vertical part 113 that contact the first protrusion 622. The thickness direction of the first protrusion 622 may be a direction parallel to the direction in which the housing 200 is stacked. The thickness of the first protrusion 622 may be the same as the first pad body 611 (refer to Figure 7 ) have the same thickness.

[0080] The first protrusion 622 may press the first vertical member 112 of the housing 110 disposed behind the second pad 620 backward. Therefore, the first vertical member 112 may be closely attached to the first plate 131 of the first supporting member 130 in contact with the first vertical member 112.

[0081] The first protrusion 622 may press the second vertical member 113 of the housing 110 disposed in front of the second pad 620 forward. Therefore, the second vertical member 113 may be closely attached to the first plate 131 of the first supporting member 130 in contact with the second vertical member 113.

[0082] The second pad 620 may include a second protrusion 623. The second protrusion 623 may be formed by extending downward from the central part 621. The second protrusion 623 may be disposed between the second plates 133 of two adjacent first support parts 130. The second protrusion 623 may contact the second plates 133 of the first support parts 130 disposed in front and rear of the second pad 620. The thickness direction of the second protrusion 623 may be a direction parallel to the direction in which the housing 200 is stacked.

[0083] The second pad 620 may include a third protrusion 624. The third protrusion 624 may be formed to extend forward from the central part 621. The third protrusion 624 may be inserted into the second insertion groove 135 of the first support part 130 disposed in front of the second pad 620.

[0084] The third protrusion 624 may be inserted into the second insertion groove 135, so as to be disposed between the second wing member 116 of the housing 110 and the second plate 133 of the first support member 130. The upper surface of the third protrusion 624 may contact the lower surface of the second wing member 116. The lower surface of the third protrusion 624 may contact the upper surface of the second plate 133. The third protrusion 624 may pressurize the second wing member 116 toward the first plate 131 side of the first support member 130. Therefore, the second wing member 116 may be closely attached to the first plate 131.

[0085] The second pad 620 may include a fourth protrusion 625. The fourth protrusion 625 may be formed to extend rearward from the central part 621. The fourth protrusion 625 may be inserted into the first insertion groove 134 of the first support part 130 provided at the rear of the second pad 620.

[0086] The fourth protrusion 625 may be inserted into the first insertion groove 134, so as to be disposed between the first wing member 114 of the housing 110 and the second plate 133 of the first support member 130. The upper surface of the fourth protrusion 625 may contact the lower surface of the first wing member 114. The lower surface of the fourth protrusion 625 may contact the upper surface of the second plate 133. The fourth protrusion 625 may pressurize the first wing member 114 toward the first plate 131 side of the first support member 130. Therefore, the first wing member 114 may be closely attached to the first plate 131.

[0087] Fig. 9 It is shown Figure 3 The first spacer 710 may be disposed between two battery assemblies 100 (see FIG. Figure 3 The two adjacent battery assemblies 100 may be separated by a first spacer 710 at a predetermined interval.

[0088] The upper side of the first spacer 710 may contact the upper side of the battery assembly 100, and the lower side of the first spacer 710 may contact the lower side of the battery assembly 100. The first spacer 710 may surround the front or rear of the battery assembly 100 from the upper side to the lower side. The first spacer 710 may function as a firewall.

[0089] The first spacer 710 may include a spacer body 711. The spacer body 711 may be formed to extend in the up-down direction. The spacer body 711 may be disposed between the two adjacent battery assemblies 100. The spacer body 711 may be disposed to be spaced apart from the two adjacent battery assemblies 100.

[0090] The thickness direction of the spacer body 711 may be parallel to the stacking direction of the housing 200. The thickness of the spacer body 711 may be greater than the thickness of the first pad body 611 of the first pad 610 or the thickness of the first protrusion 622 of the second pad 620.

[0091] The first spacer 710 may include third and fourth protrusions 712 and 713. The third and fourth protrusions 712 and 713 may be formed to protrude from the upper side of the spacer body 711 in the direction in which the housings 200 are stacked. For example, the third protrusion 712 may be formed to protrude forward from the upper side of the spacer body 711, and the fourth protrusion 713 may be formed to protrude backward from the upper side of the spacer body 711.

[0092] The third protrusion 712 may include a first concave surface 712a. The first concave surface 712a may contact a portion where the horizontal part 111 and the second vertical part 113 of the housing 110 disposed in front of the first spacer 710 are connected. The first concave surface 712a may be formed corresponding to the shapes of the horizontal part 111 and the second vertical part 113 contacting the first concave surface 712a.

[0093] The fourth protrusion 713 may include a second concave surface 713a. The second concave surface 713a may contact a portion where the horizontal part 111 and the first vertical part 112 of the housing 110 disposed behind the first spacer 710 are connected. The second concave surface 713a may be formed corresponding to the shapes of the horizontal part 111 and the first vertical part 112 contacting the second concave surface 713a.

[0094] The first spacer 710 may include fifth and sixth protrusions 714 and 715. The fifth and sixth protrusions 714 and 715 may be formed by protruding from the lower side of the spacer body 711 in the direction in which the housings 200 are stacked. For example, the fifth protrusion 714 may be formed by protruding forward from the lower side of the spacer body 711, and the sixth protrusion 715 may be formed by protruding backward from the lower side of the spacer body 711. The fifth protrusion 714 may contact the battery assembly 100 disposed in front of the first spacer 710, and the sixth protrusion 715 may contact the battery assembly 100 disposed behind the first spacer 710.

[0095] The fifth protrusion 714 may include a fifth protrusion 714a. The fifth protrusion 714a may be formed to extend forward from the fifth protrusion 714. The fifth protrusion 714a may be inserted into the second insertion groove 135 of the first support member 130 disposed in front of the first spacer 710.

[0096] The fifth protrusion 714a may be provided between the second wing member 116 of the housing 110 inserted into the second insertion groove 135 and the second plate 133 of the first support member 130. The upper surface of the fifth protrusion 714a may contact the lower surface of the second wing member 116 of the housing 110. The lower surface of the fifth protrusion 714a may contact the upper surface of the second plate 133 of the first support member 130. The fifth protrusion 714a may pressurize the second wing member 116 toward the first plate 131 side of the first support member 130. Therefore, the second wing member 116 may be closely attached to the first plate 131.

[0097] The fifth protrusion 714 may include a third concave surface 714b. The third concave surface 714b may form a portion of the upper surface of the fifth protrusion 714a. The third concave surface 714b may contact a portion where the second vertical component 113 and the second wing component 116 of the housing 110 disposed in front of the first spacer 710 are connected. The third concave surface 714b may be formed corresponding to the shape of the second vertical component 113 and the second wing component 116 contacting the third concave surface 714b.

[0098] The fifth protrusion 714 may include a fourth concave surface 714c. The fourth concave surface 714c may form a portion of the lower surface of the fifth protrusion 714a. The fourth concave surface 714c may contact the second plate 133 of the first support member 130 disposed in front of the first spacer 710. The fourth concave surface 714c may be formed corresponding to the shape of the second plate 133 contacting the fourth concave surface 714c.

[0099] The sixth protrusion 715 and the fifth protrusion 714 may be symmetrically formed in a direction in which the housings 200 are stacked.

[0100] The sixth protrusion 715 may include a sixth protrusion 715a. The sixth protrusion 715a may be formed by extending backward from the sixth protrusion 715. The sixth protrusion 715a may be inserted into the first insertion groove 134 of the first support member 130 provided at the rear of the first spacer 710. The sixth protrusion 715a may closely attach the first wing member 114 of the first support member 130 to the first plate 131 in the same principle as the fifth protrusion 714a.

[0101] The sixth protrusion 715 may include a fifth concave surface 715b. The fifth concave surface 715b may form a portion of the upper surface of the sixth protrusion 715a. The fifth concave surface 715b may contact a portion where the first vertical part 112 and the first wing part 114 of the housing 110 disposed behind the first spacer 710 are connected. The fifth concave surface 715b may be formed corresponding to the shapes of the first vertical part 112 and the first wing part 114 contacting the fifth concave surface 715b.

[0102] The sixth protrusion 715 may include a sixth concave surface 715c. The sixth concave surface 715c may form a portion of the lower surface of the sixth protrusion 715a. The sixth concave surface 715c may contact the second plate 133 of the first support member 130 disposed behind the first spacer 710. The sixth concave surface 715c may be formed corresponding to the shape of the second plate 133 contacting the sixth concave surface 715c.

[0103] Fig.10 It is shown Figure 2 FIG. 200 of the housing.

[0104] The housing 200 may include a first vertical plate 210. The first vertical plate 210 may be disposed at one end 201 of the housing 200. The first vertical plate 210 may be formed to extend in an up-and-down direction.

[0105] The housing 200 may include a second vertical plate 220. The second vertical plate 220 may be disposed at the other end 202 of the housing 200. The second vertical plate 220 may face the first vertical plate 210. The second vertical plate 220 may be formed to extend in the up-down direction.

[0106] The housing 200 may include a connection plate 230. The connection plate 230 may connect the first vertical plate 210 and the second vertical plate 220. The connection plate 230 may be formed to extend along the length direction of the housing 200. The connection plate 230 may be disposed between the battery assembly 100 disposed at the upper portion of the housing 200 and the battery assembly 100 disposed at the lower portion of the housing 200.

[0107] The connection plate 230 may include a connection plate body 231. The connection plate body 231 may include a front surface and a rear surface.

[0108] The connecting plate 230 may include a first through hole 232. The first through hole 232 may penetrate the connecting plate body 231 in the direction in which the housings 200 are stacked. For example, the first through hole 232 may penetrate the connecting plate body 231 in the front-to-back direction. The first through holes 232 formed in each of the plurality of housings 200 may be connected to each other. The first support rod 500 may be coupled to the first through hole 232. The inner diameter of the first through hole 232 may be greater than the outer diameter of the first support rod 500.

[0109] The connection plate 230 may include a plurality of first through holes 232. The plurality of first through holes 232 may be disposed spaced apart from each other in the left-right direction. The connection plate 230 according to one embodiment of the present disclosure may include four first through holes 232.

[0110] The connection plate 230 may include a first through hole 233. The first through hole 233 may be formed concavely on the front surface or the rear surface of the connection plate body 231. The connection plate 230 may include a plurality of first through holes 233. The first through holes 233 may make the connection plate 230 lightweight.

[0111] The housing 200 may include a first coupling portion 240. The first coupling portion 240 may be formed extending from the upper side of the first vertical plate 210 to the left. The housing 200 may include a second coupling portion 250. The second coupling portion 250 may be formed extending from the lower side of the first vertical plate 210 to the left. The first coupling portion 240 and the second coupling portion 250 may be formed symmetrically in the up-down direction.

[0112] The first coupling portion 240 may include a first coupling portion body 241. The first coupling portion body 241 may include a front surface and a rear surface.

[0113] The first coupling portion 240 may include a first assembly groove 242. The first assembly groove 242 may be formed concavely on the front surface of the first coupling portion body 241. For example, the first assembly groove 242 may be formed in a quadrilateral shape.

[0114] The first coupling portion 240 may include a second assembly groove 243. The second assembly groove 243 may be formed concavely on the front surface of the first coupling portion body 241. The second assembly groove 243 may be formed to communicate with the lower side of the first assembly groove 242. The second assembly groove 243 may have a shape concave downward from the first assembly groove 242.

[0115] The first coupling portion 240 may include a second through hole 244. The second through hole 244 may penetrate the first coupling portion body 241 along the direction in which the housings 200 are stacked. For example, the second through hole 244 may penetrate the first coupling portion body 241 along the front-to-back direction. The second through hole 244 may be arranged to communicate with the first assembly groove 242. The second through holes 244 formed in each of the plurality of housings 200 may be communicated with each other. The second support rod 400 may be coupled to the second through hole 244. The inner diameter of the second through hole 244 may be greater than the outer diameter of the second support rod 400.

[0116] The second coupling part 250 and the first coupling part 240 may be formed symmetrically in the up-down direction, and thus the second coupling part 250 may include a through hole formed in the up-down direction opposite to the second through hole 244. The second support rod 400 may be coupled to the through hole of the second coupling part 250.

[0117] The first coupling part 240 may include a second through hole 245. The second through hole 245 may be formed concavely on the front surface of the first coupling part body 241. The second through hole 245 may reduce the weight of the first coupling part 240.

[0118] The housing 200 may include a third coupling portion 260. The third coupling portion 260 may be formed extending from the upper side of the second vertical plate 220 to the right. The housing 200 may include a fourth coupling portion 270. The fourth coupling portion 270 may be formed extending from the lower side of the second vertical plate 220 to the right. The third coupling portion 260 and the fourth coupling portion 270 may be formed symmetrically in the up-down direction.

[0119] The third combining portion 260 may include a third combining portion body 261. The third combining portion body 261 may include a front surface and a rear surface.

[0120] The third combining portion 260 may include a first fitting protrusion 262. The first fitting protrusion 262 may be formed to protrude from the front surface of the third combining portion body 261. For example, the first fitting protrusion 262 may be formed in a quadrilateral shape.

[0121] The third coupling part 260 may include a second assembly protrusion 263. The second assembly protrusion 263 may be formed to protrude from the front surface of the third coupling part body 261. The second assembly protrusion 263 may be connected to the first assembly protrusion 262. The second assembly protrusion 263 may have a shape that protrudes upward from the first assembly protrusion 262.

[0122] The third coupling portion 260 may include a groove 264. The groove 264 may be formed concavely on the front surface of the first fitting protrusion 262. Alternatively, the groove 264 may be formed concavely on the front surface of the first fitting protrusion 262 and the front surface of the second fitting protrusion 263.

[0123] The third coupling portion 260 may include a third through hole 265. The third through hole 265 may penetrate the third coupling portion body 261 along the direction in which the housings 200 are stacked. For example, the third through hole 265 may penetrate the third coupling portion body 261 along the front-to-back direction. The third through hole 265 may be arranged to communicate with the groove 264. The third through holes 265 formed in each of the plurality of housings 200 may be communicated with each other. The second support rod 400 may be coupled to the third through hole 265. The inner diameter of the third through hole 265 may be greater than the outer diameter of the second support rod 400.

[0124] The fourth coupling part 270 and the third coupling part 260 may be formed symmetrically in the up-down direction, and thus the fourth coupling part 270 may include a through hole formed symmetrically in the up-down direction with the third through hole 265. The second support rod 400 may be coupled to the through hole of the fourth coupling part 270.

[0125] The third coupling part 260 may include a third through hole 266. The third through hole 266 may be formed concavely on the front surface of the third coupling part body 261. The third through hole 266 may reduce the weight of the third coupling part 260.

[0126] The first assembly groove 242 and the second assembly groove 243 of the first coupling portion 240 may be referred to as assembly grooves. The first assembly protrusion 262, the second assembly protrusion 263 and the groove 264 of the third coupling portion 260 may be referred to as assembly protrusions.

[0127] The first coupling portion 240 may include an assembly protrusion formed on the rear surface of the first coupling portion body 241, and the assembly protrusion is formed symmetrically with the assembly protrusion of the third coupling portion 260 in the up-down direction. In two adjacent housings 200 among the plurality of housings 200, the assembly protrusion of the first coupling portion 240 of one housing 200 may be coupled with the assembly groove of the first coupling portion 240 of the other housing 200.

[0128] The third coupling portion 260 may include a fitting groove formed on a rear surface of the third coupling portion body 261, the fitting groove being formed symmetrically with the fitting groove of the first coupling portion 240 in the up-down direction. In two adjacent housings 200 among the plurality of housings 200, the fitting groove of the third coupling portion 260 of one housing 200 may be coupled with the fitting protrusion of the third coupling portion 260 of the other housing 200.

[0129] The housings 200 can be coupled to each other only in a predetermined direction by the shapes of the first, second, third, and fourth coupling parts 240, 250, 260, and 270. Therefore, it is possible to prevent the housings 200 from being coupled to each other in a wrong direction during manufacturing.

[0130] Fig.11 is shown in conjunction with Figure 2 FIG. 2 is a diagram of a housing 200 and an end plate 300 of a first support rod 400 and a second support rod 500 . Fig.12 is shown in conjunction with Fig.11 FIG. 5 is a diagram of surface pressure areas C1 , C2 , C3 , and C4 of the first support rod 500 of the end plate 300 .

[0131] A plurality of shells 200 may be referred to as a shell group. The end plates 300 may be disposed in front of and behind the shell group along the stacking direction of the shells 200. The end plates 300 and the shell group may be combined by first and second support rods 400 and 500. The following description is based on the end plates 300 disposed in front of the shell group.

[0132] The end plate 300 may include a first end plate 310. The first end plate 310 may include a front surface and a rear surface. The rear surface of the first end plate 310 may contact the housing 200.

[0133] The end plate 300 may include a second end plate 320. The second end plate 320 may be in contact with the front surface of the first end plate 310. The second end plate 320 may include a material having higher rigidity than that of the first end plate 310.

[0134] The second end plate 320 may include a second end plate body 321. The second end plate body 321 may be disposed at the center of the first end plate 310.

[0135] The second end plate 320 may include first, second, third, and fourth extensions 322, 323, 324, and 325. The first extension 322 may be formed by extending upward from the left side of the second end plate body 321. The second extension 323 may be formed by extending downward from the left side of the second end plate body 321. The third extension 324 may be formed by extending upward from the right side of the second end plate body 321. The fourth extension 325 may be formed by extending downward from the right side of the second end plate body 321.

[0136] The end plate 300 may include a first coupling hole 322a. The first coupling hole 322a may be provided on the first extension portion 322. The first coupling hole 322a may be formed through the first and second end plates 310 and 320 in the stacking direction of the housing 200. The first coupling hole 322a may be communicated with the second through hole 244 of the first coupling portion 240 of the housing 200.

[0137] The end plate 300 may include a second coupling hole 323a. The second coupling hole 323a may be provided on the second extension portion 323. The second coupling hole 323a may be formed through the first and second end plates 310 and 320 in the stacking direction of the housing 200. The second coupling hole 323a may communicate with the through hole of the second coupling portion 250 of the housing 200.

[0138] The end plate 300 may include a third coupling hole 324a. The third coupling hole 324a may be provided on the third extension portion 324. The third coupling hole 324a may be formed through the first and second end plates 310 and 320 in the stacking direction of the housing 200. The third coupling hole 324a may be communicated with the third through hole 265 of the third coupling portion 260 of the housing 200.

[0139] The end plate 300 may include a fourth coupling hole 325a. The fourth coupling hole 325a may be provided on the fourth extension portion 325. The fourth coupling hole 325a may be formed through the first and second end plates 310 and 320 in the stacking direction of the housing 200. The fourth coupling hole 325a may be communicated with the through hole of the fourth coupling portion 270 of the housing 200.

[0140] The end plate 300 may include a fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d. The fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d may be provided on the second end plate body 321. The fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d may be provided spaced apart from each other in the left-right direction. The fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d may be formed by penetrating the first and second end plates 310 and 320 in the direction in which the housing 200 is stacked. Each of the fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d may correspond to the first through hole 232 of the housing 200. Each of the fifth, sixth, seventh, and eighth coupling holes 326 a , 326 b , 326 c , and 326 d may communicate with the first through hole 232 of the housing 200 .

[0141] The battery module 10 may include first and second support bars 400 and 500. The battery module 10 may include a plurality of first support bars 500 and a plurality of second support bars 400. Each of the first and second support bars 400 and 500 may include a bolt and a nut. The end plate 300 and the plurality of housings 200 may be bolted together by the first and second support bars 400 and 500.

[0142] The second support rod 400 may be coupled to the first coupling hole 322a and the second through hole 244 to couple the end plate 300 and the plurality of housings 200. The second support rod 400 may be coupled to the second coupling hole 323a and the through hole of the second coupling portion 250 to couple the end plate 300 and the plurality of housings 200. The second support rod 400 may be coupled to the third coupling hole 324a and the third through hole 265 to couple the end plate 300 and the plurality of housings 200. The second support rod 400 may be coupled to the fourth coupling hole 325a and the through hole of the fourth coupling portion 270 to couple the end plate 300 and the plurality of housings 200.

[0143] The first support rod 500 can be coupled to each of the fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d and the first through hole 232 corresponding to each of the fifth, sixth, seventh, and eighth coupling holes 326a, 326b, 326c, and 326d to couple the end plate 300 and multiple shells 200.

[0144] When the end plate 300 and the plurality of housings 200 are bolted together through the first support rods 500 , a surface pressure region may be formed on the end plate 300 through the first support rods 500 .

[0145] The surface pressure area of ​​the first support rod 500 coupled to the fifth coupling hole 326a may be referred to as a first area C1. The surface pressure area of ​​the first support rod 500 coupled to the sixth coupling hole 326b may be referred to as a second area C2. The surface pressure area of ​​the first support rod 500 coupled to the seventh coupling hole 326c may be referred to as a third area C3. The surface pressure area of ​​the first support rod 500 coupled to the eighth coupling hole 326d may be referred to as a fourth area C4.

[0146] Each of the first, second, third, and fourth regions C1, C2, C3, and C4 may overlap with one or more regions of the first, second, third, and fourth regions C1, C2, C3, and C4 except for itself. The fifth, sixth, seventh, and eighth combining holes 326a, 326b, 326c, and 326d may be arranged so that the first, second, third, and fourth regions C1, C2, C3, and C4 overlap with each other. For example, the first region C1 may overlap with the second region C2, the second region C2 may overlap with the first region C1 and the third region C3, the third region C3 may overlap with the second region C2 and the fourth region C4, and the fourth region C4 may overlap with the third region C3. The surface pressure area of ​​the first support bar 500 may be formed without a gap between two adjacent first support bars 500 among the plurality of first support bars 500. Therefore, the portion of the battery module 10 adjacent to the first support bar 500 may be pressurized by the first support bar 500.

[0147] Fig.13 It is shown Figure 2 Magnified view of part B.

[0148] The first support rod 500 may include a head 510, a threaded portion 520 extending from the head 510, and a nut (not shown) coupled to the threaded portion 520. Fig.11) may be coupled between one of the two battery assemblies 100 disposed on the outside among the plurality of battery assemblies 100 and the head 510. The end plate 300 may be coupled between another of the two battery assemblies 100 disposed on the outside among the plurality of battery assemblies 100 and the nut.

[0149] When the first support rod 500 is bolted and tightened with the two end plates 300, a force may be applied to bring the two end plates 300 closer to each other. That is, the first support rod 500 may pressurize the two end plates 300. When the two end plates 300 are pressurized, the plurality of battery assemblies 100, the plurality of housings 200, the pads 600, and the spacers 700 (refer to Figure 3 ) may be pressurized. The direction in which the first support rod 500 presses the two end plates 300 may be referred to as a first direction. The force applied in the first direction may include a compressive force applied in a direction parallel to the direction in which the housings 200 are stacked. For example, the support rod 500 may pressurize the two end plates 300 in the front-to-back direction.

[0150] When the battery cell 120 catches fire and generates gas, the gas may apply a force that pushes the first vertical part 112 and the second vertical part 113 of the housing 110, so that the gap between the first vertical part 112 and the second vertical part 113 increases. The direction in which the gas pushes the first vertical part 112 and the second vertical part 113 may be referred to as a second direction. The force applied in the second direction may include a pulling force applied in a direction parallel to the direction in which the housing 200 is stacked. For example, the gas inside the housing 110 may push the first vertical part 112 forward, or push the second vertical part 113 backward.

[0151] The housing 110 may be subjected to a force from outside the housing 110 in a first direction, and may be subjected to a force from inside the housing 110 in a second direction. At this time, the first support rod 500 may be tightened so that the force applied in the first direction is greater than the force applied in the second direction. Therefore, the housing 110 is difficult to be opened by the gas. In addition, the interior of the housing 110 is sealed, so that a fire occurring inside the housing 110 can be suffocated and extinguished.

[0152] Pad 600 (ref. Figure 3 ) and spacer 700 (refer to Figure 3 ) may include a material having elasticity. The pad 600 and the spacer 700 may be pressed by the first support rod 500 to be closely attached to the battery assembly 100. The pad 600 or the spacer 700 may pressurize the first vertical part 112 and the second vertical part 113 of the housing 110.

[0153] When the second pad 620 pressurizes the first vertical member 112 and the second vertical member 113, the first vertical member 112 and the second vertical member 113 can be closely attached to the first plate 131 of the first support member 130. Therefore, the housing 110 is difficult to be opened by the gas. In addition, the inside of the housing 110 is sealed, so that the fire inside the housing 110 can be suffocated and extinguished.

[0154] Similar to the second pad 620, the lower side of the first spacer 710 of the spacer 700 can make the first vertical part 112 and the second vertical part 113 close to the first plate 131 of the first support part 130. Therefore, it is difficult for the housing 110 to be opened by the gas. In addition, the inside of the housing 110 is sealed, so that the fire inside the housing 110 can be suffocated and extinguished.

[0155] The above-described contents are merely examples of applying the principles of the present disclosure, and other configurations may also be included without departing from the scope of the present disclosure.

Claims

1. A battery module, comprising: A plurality of battery assemblies are stacked one on top of the other in one direction; A first end plate and a second end plate are respectively arranged on both sides of the plurality of battery assemblies in the one direction; as well as a first support rod, connecting the first end plate and the second end plate, Each of the plurality of battery assemblies comprises: Battery cells; a housing for accommodating the battery cell and having an opening formed on one side; and a first supporting member coupled to the opening portion, The first support rod is disposed adjacent to the opening of the housing to pressurize the first end plate and the second end plate.

2. The battery module according to claim 1, comprising: A pad is arranged between two adjacent battery assemblies among the plurality of battery assemblies.

3. The battery module according to claim 1, wherein: The first support rods are provided in plurality. The surface pressure areas formed by the first support rods respectively overlap with each other.

4. The battery module according to claim 1, wherein: The first support rod is coupled to the center portion of the first end plate and the second end plate, The plurality of battery assemblies are arranged in two rows across the first support bar and are stacked on each other along the one direction.

5. The battery module according to claim 4, wherein: The plurality of battery assemblies are formed symmetrically with respect to the first support rod.

6. The battery module according to claim 1, further comprising: The second support rod connects the first end plate and the second end plate and is coupled to the edge of the end plate.

7. The battery module according to claim 6, wherein: The first support rod and the second support rod are bolted to the first end plate and the second end plate.

8. The battery module according to claim 6, comprising: a plurality of housings for accommodating each of the plurality of battery assemblies; The first support rod and the second support rod penetrate through the plurality of shells.

9. The battery module according to claim 2, wherein: The first supporting member comprises: A first plate, disposed inside the housing; A second plate disposed outside the housing; and The connecting member connects the first plate and the second plate and passes through the opening.

10. The battery module according to claim 9, wherein: The first plate contacts the inner surface of the housing in the one direction.

11. The battery module according to claim 9, wherein: The first supporting member includes an insertion groove, which is provided between the first plate and the second plate and is formed to be recessed toward the connecting member. The one side of the housing is coupled to the insertion groove.

12. The battery module according to claim 11, wherein: The housing includes a clip coupled to the insertion slot, The clip comprises: a wing member in contact with the first plate; and An elastic member extends from the wing member and contacts the second plate.

13. The battery module according to claim 12, wherein: The elastic member extends to form an acute angle with the wing member.

14. The battery module according to claim 2, comprising: a second supporting member, disposed inside the housing and facing the first supporting member across the battery cell; The second supporting member is in contact with the inner surface of the housing in the one direction.

15. The battery module according to claim 14, wherein: The pad includes a first pad disposed between the second supporting members of the two adjacent battery assemblies.

16. The battery module according to claim 11, wherein: The pad includes a second pad disposed between the first supporting members of the two adjacent battery assemblies, The second pad comprises: Centerpiece; a first protrusion formed extending from the central member and disposed between the first plates; a second protrusion formed extending from the central member and disposed between the second plates; and The third protrusion and the fourth protrusion are formed to extend from the central member and are respectively coupled to two insertion grooves facing each other among the insertion grooves of the two adjacent battery assemblies.

17. The battery module according to claim 16, wherein: The first protrusion contacts the outer surface of the housing, The second protrusion is in contact with the second plate, The third protrusion and the fourth protrusion are disposed between the case and the second plate and are in contact with the case and the second plate.

18. The battery module according to claim 2, wherein: The pad comprises: a first pad in contact with the other side of the housing; and a second pad, in contact with one side of the housing, The first pad is spaced apart from the second pad.

19. The battery module according to claim 18, comprising: a spacer disposed between two adjacent battery assemblies among the plurality of battery assemblies, The spacer surrounds both side surfaces of the housing in the one direction.

20. The battery module according to claim 19, wherein: The pads and the spacers are alternately arranged in the one direction.

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