Secondary battery module

Abstract

The present invention relates to a secondary battery module, which can be arranged in various forms inside a secondary battery pack and is easy to be arranged in series or in parallel between battery cells inside the secondary battery pack, thereby improving the efficiency when designing the secondary battery pack. The secondary battery module according to the present invention includes: a plurality of battery cells, the plurality of battery cells are arranged to face each other; and a rotating member, the rotating member is arranged between the surface of one battery cell and the surface of another battery cell facing each other among the plurality of battery cells, wherein the one battery cell rotates relative to the other battery cell.

Description

Technical Field

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2022-0039953, filed on March 30, 2022, which is hereby incorporated by reference in its entirety. Technical Field

[0004] The present invention relates to a secondary battery module, and more particularly, to a secondary battery module including a plurality of battery cells. Background Art

[0005] In recent years, energy prices have risen due to the depletion of fossil fuels, people's concerns about environmental pollution have increased, and the demand for environmentally friendly alternative energy is becoming an indispensable factor in future life. Therefore, research on various power generation technologies such as solar energy, wind energy and tidal energy is continuing, and there is also great interest in power storage devices such as batteries that use the generated electricity more efficiently.

[0006] In addition, with the development of technology and the increase in demand for electronic mobile devices and electric vehicles using batteries, the demand for batteries as energy sources is rapidly increasing. Therefore, many studies have been conducted on batteries that can meet various needs.

[0007] Batteries that store electrical energy can generally be classified into primary batteries and secondary batteries. Such primary batteries are disposable batteries. On the other hand, such secondary batteries are rechargeable batteries manufactured by using materials that can repeat the oxidation and reduction process between current and materials. That is, when the reduction reaction of the material is performed by the current, the power source is charged. When the oxidation reaction of the material is performed by the current, the power source is discharged. Such charge-discharge is repeatedly performed to generate electricity.

[0008] Recently, as demand for large-capacity structures in addition to use as energy storage sources has increased, demand for secondary battery packs in which a plurality of cells or secondary battery modules are gathered has also increased, and thus demand for secondary battery modules has also increased.

[0009] The secondary battery module according to the related art has a fixed structure according to the frame for manufacturing the secondary battery pack. In addition, the direction and arrangement of the terminal are fixed by arrangement, and the design freedom inside the secondary battery pack is limited.

[0010] In order to solve this problem, a secondary battery module that can be relatively freely designed inside a secondary battery pack and can be applied in various forms is required. Summary of the invention

[0011] Technical issues

[0012] The present invention is made to solve the above problems, and an object of the present invention is to provide a secondary battery module which can be arranged in various forms inside a secondary battery pack and can be easily arranged in series or in parallel between battery cells inside the secondary battery pack, thereby improving the efficiency when designing the secondary battery pack.

[0013] Technical Solution

[0014] A secondary battery module according to the present invention may include: a plurality of battery cells disposed to face each other; and a rotating member disposed between a surface of one battery cell and a surface of another battery cell facing each other among the plurality of battery cells, wherein one battery cell rotates relative to the other battery cell.

[0015] The secondary battery module may further include an adhesive material attaching the rotating member to the battery cell.

[0016] The rotating member may include: a first rotating plate, which is arranged at the center of the surface of one battery cell; a second rotating plate, which is arranged at the center of the surface of another battery cell; and a rotating shaft, which is configured to connect the first rotating plate to the second rotating plate so that the first rotating plate and the second rotating plate can rotate relative to each other and extend in a direction orthogonal to the surfaces of the plurality of battery cells.

[0017] The rotating shaft may have an elastic force attracting the first rotating plate and the second rotating plate spaced apart from each other.

[0018] The first rotating plate and the second rotating plate may include magnetic materials that are attracted to each other.

[0019] The rotating plate may include a protrusion protruding toward the second rotating plate, and the second rotating plate may include a recessed portion recessed in a shape corresponding to the shape of the protrusion, wherein the second rotating plate rotates and the protrusion is inserted into the recessed portion so that the first rotating plate and the second rotating plate are fixed to each other.

[0020] Each of the protrusion and the recess may be formed in two such that when the first rotation plate or the second rotation plate rotates by an angle of 180 degrees in a state of being fixed to each other, the first rotation plate and the second rotation plate are fixed to each other again.

[0021] Each of the protrusions and recesses may be formed in four such that when the first rotation plate or the second rotation plate is rotated by an angle of 90 degrees in a state of being fixed to each other, the first rotation plate and the second rotation plate are fixed to each other again.

[0022] The secondary battery module may also include: a first terminal, which is arranged on an edge of one surface or the other surface of the battery cell; and a second terminal, which is arranged on an edge opposite to the first terminal on one surface or the other surface of the battery cell, wherein the first terminal may include: an upper first terminal, which is arranged to protrude from one surface of one battery cell toward another battery cell; a lower first terminal, which is arranged on the same plane as one surface of one battery cell; and a symmetrical first terminal, which is arranged at a position corresponding to the upper first terminal on the same plane as the other surface of one battery cell, and the second terminal may include: an upper second terminal, which is arranged to protrude from the other surface of one battery cell toward another battery cell facing the one battery cell; a lower second terminal, which is arranged on the same plane as the other surface of one battery cell; and a symmetrical second terminal, which is arranged at a position corresponding to the upper second terminal on the same plane as one surface of one battery cell, wherein the first terminal and the second terminal may have opposite polarities to each other and be connected to each other at positions corresponding to each other to fix the battery cell.

[0023] In the first terminals and the second terminals, when one battery cell is parallel to the other battery cell, the upper first terminal of one battery cell and the symmetrical first terminal of the other battery cell contact each other, and the symmetrical second terminal of one battery cell and the upper second terminal of the other battery cell contact each other to be connected in parallel, and when one battery cell is rotated 180 degrees relative to the other battery cell, the upper first terminal of one battery cell and the lower second terminal of the other battery cell contact each other, and the lower first terminal of one battery cell and the upper second terminal of the other battery cell contact each other to be connected in series.

[0024] A first terminal and a second terminal having opposite polarities may be disposed at both ends of a plurality of battery cells, and the secondary battery module may further include at least one of: a parallel connection member configured to electrically connect the first terminals to each other or to electrically connect the second terminals to each other; and a series connection member configured to electrically connect the first terminal to the second terminal.

[0025] Technical Effects

[0026] The secondary battery module according to the present invention may include a plurality of cells disposed to face each other and a rotating member disposed between a surface of one cell and a surface of another cell facing each other among the plurality of cells, and one of the cells rotates relative to the other cell.

[0027] Therefore, the secondary battery module may be disposed in various forms inside the secondary battery pack, and may be easily disposed in series or in parallel between battery cells inside the secondary battery pack, thereby improving efficiency in designing the secondary battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1is a schematic perspective view illustrating a secondary battery module according to Embodiment 1 of the present invention.

[0029] Figure 2 1 is a schematic perspective view illustrating a state in which the battery cells of the secondary battery module according to Embodiment 1 of the present invention are rotated.

[0030] Figure 3 is a schematic perspective view illustrating a rotating member of the secondary battery module according to Embodiment 1 of the present invention.

[0031] Figure 4 This is a schematic perspective view illustrating a battery cell, a first terminal, and a second terminal of a secondary battery module according to Embodiment 1 of the present invention.

[0032] Figure 5 1 is a schematic diagram illustrating a state in which first terminals and second terminals are provided on a battery cell of a secondary battery module according to Embodiment 1 of the present invention.

[0033] Figure 6 1 is a schematic diagram illustrating a state in which battery cells according to Embodiment 1 of the present invention are connected to each other through a first terminal and a second terminal of a secondary battery module.

[0034] Figure 7 This is a schematic perspective view illustrating a secondary battery module according to Embodiment 2 of the present invention.

[0035] Figure 8 is a schematic perspective view illustrating a rotating member of a secondary battery module according to Embodiment 2 of the present invention.

[0036] Fig. 9 1 is a schematic perspective view illustrating a battery cell, a first terminal, and a second terminal of a secondary battery module according to a second embodiment of the present invention.

[0037] Fig.10 1 is a schematic perspective view illustrating a state in which parallel connection means and series connection means are provided according to Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0038] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. However, the present invention can be implemented in several different forms and is not limited or constrained by the following examples.

[0039] In order to explain the present invention clearly, detailed description of parts not related to the specification or related known technologies that may unnecessarily obscure the gist of the present invention has been omitted, and in this specification, reference numerals are added to the components in each figure. In this case, the same or similar reference numerals are assigned to the same or similar elements throughout the specification.

[0040] Furthermore, the terms or words used in the specification and claims should not be restrictively interpreted as ordinary meanings or dictionary-based meanings, but should be interpreted as meanings and concepts consistent with the scope of the present invention on the basis that the inventor can properly define the concepts of the terms to best describe and interpret his or her invention.

[0041] Figure 1 is a schematic perspective view illustrating a secondary battery module 100 according to Embodiment 1 of the present invention, and Figure 2 1 is a schematic perspective view illustrating a state in which the battery cell 110 of the secondary battery module 100 according to Embodiment 1 of the present invention is rotated.

[0042] The present invention provides a secondary battery module 100 as Embodiment 1.

[0043] The secondary battery module 100 according to Embodiment 1 of the present invention may include a battery cell 110 and a rotating member 120 .

[0044] Reference Figure 1 , the battery cell 110 of the secondary battery module 100 may be provided in plurality to face each other. Here, the battery cell 110 may refer to a pouch-shaped battery cell.

[0045] The battery cells 110 may be disposed in parallel with each other, and the secondary battery module 100 according to Embodiment 1 may include 12 battery cells 110 .

[0046] The rotating member 120 of the secondary battery module 100 may be disposed in one battery cell 110a facing each other among the plurality of battery cells 110 (see Figure 6 ) and the surface of another battery cell 110b. Here, one battery cell 110a may rotate relative to another battery cell 110b. One battery cell 110a does not refer to a specific battery cell, but may refer to any battery cell among the plurality of battery cells 110. In addition, another battery cell 110b may refer to a battery cell adjacent to one battery cell 110a.

[0047] Figure 2 A state in which one battery cell 110 disposed on the outer side is rotated by an angle of about 90 degrees is illustrated. Figure 2 , each battery cell 110 may be rotated relative to another battery cell 110 by the rotating member 120. Here, the battery cell 110 may be rotated at an angle of 360 degrees.

[0048] The state in which the battery cells 110 are disposed in the secondary battery module 100 may be effectively changed by the rotating member 120 .

[0049] The secondary battery module 100 according to Embodiment 1 of the present invention may further include an adhesive material (not shown). The rotating member 120 (more specifically, the first rotating plate 121 and the second rotating plate 122 (see Figure 3 )) may be attached to the battery cell 110 by an adhesive material.

[0050] Specifically, the adhesive material may be applied to a portion of the surface of the battery cell 110 on which the rotating member 120 is disposed.

[0051] The battery cells 110 and the rotating member 120 of the secondary battery module 100 may be attached to each other by an adhesive material and effectively fixed.

[0052] Figure 3 1 is a schematic perspective view illustrating the rotating member 120 of the secondary battery module 100 according to Embodiment 1 of the present invention.

[0053] Specifically, Figure 3 (A) schematically illustrates a state in which the first rotating plate 121 and the second rotating plate 122 are in contact with each other, and Figure 3 (B) schematically illustrates a state in which the first rotating plate 121 rotates while being spaced apart from the second rotating plate 122, and Figure 3 (C) schematically illustrates a state in which the rotating first rotating plate 121 and the second rotating plate 122 attract each other.

[0054] The rotating member 120 of the secondary battery module 100 according to Embodiment 1 of the present invention may include a first rotating plate 121 , a second rotating plate 122 , and a rotating shaft 123 .

[0055] The first rotation plate 121 may be disposed at the center of a surface of one battery cell 110 a , and the second rotation plate 122 may be disposed at the center of a surface of the other battery cell 110 b .

[0056] Reference Figure 3 Each of the first rotating plate 121 and the second rotating plate 122 may be formed in a substantially disk shape, and the first rotating plate 121 and the second rotating plate 122 may have substantially the same cross-sectional area. However, the shape and area of ​​each of the first rotating plate 121 and the second rotating plate 122 are not limited thereto.

[0057] The rotation shaft 123 may connect the first rotation plate 121 to the second rotation plate 122 to be rotatable with each other, and may extend in a direction orthogonal to surfaces of the plurality of battery cells 110 .

[0058] Specifically, the rotation shaft 123 may be formed in a substantially shaft shape, and may have a cross-sectional area smaller than that of each of the first rotation plate 121 and the second rotation plate 122 .

[0059] In addition, the rotation shaft 123 according to Embodiment 1 may be provided at the center of the surface of the first rotation plate 121 or the second rotation plate 122 .

[0060] The first rotating plate 121 or the second rotating plate 122 may rotate about the rotating shaft 123 , and the battery cells 110 may rotate together with the rotation of the first rotating plate 121 or the second rotating plate 122 .

[0061] Each of the battery cells 110 may be effectively rotated by components included in the rotating member 120 .

[0062] The rotating shaft 123 of the rotating member 120 according to Embodiment 1 of the present invention may have elasticity. Specifically, the rotating shaft 123 may be made of a material having elasticity.

[0063] The rotating shaft 123 may attract the first rotating plate 121 and the second rotating plate 122 spaced apart from each other by elastic force. The first rotating plate 121 or the second rotating plate 122 may rotate while being spaced apart from each other. The elastic force may be applied to the first rotating plate 121 and the second rotating plate 122 spaced apart from each other by the rotating shaft 123 in the direction of mutual attraction. That is, an attractive force may be provided so that the first rotating plate 121 and the second rotating plate 122 rotating at a desired angle contact each other by the elastic force of the rotating shaft 123.

[0064] If the rotating shaft 123 has elasticity, the first rotating plate 121 or the second rotating plate 122 may be effectively moved to contact each other after rotation.

[0065] The first rotation plate 121 of the rotation member 120 according to Embodiment 1 of the present invention may include a protrusion 121 - 1 , and the second rotation plate 122 may have a depression 122 - 1 .

[0066] The protrusion 121 - 1 may be formed to protrude from one surface of the first rotation plate 121 toward the second rotation plate 122 , and the depression 122 - 1 may be formed to be depressed on one surface of the second rotation plate 122 in a shape corresponding to that of the protrusion 121 - 1 .

[0067] Since the protrusion 121 - 1 is inserted into the recess 122 - 1 , the first rotation plate 121 and the second rotation plate 122 may be effectively fixed to each other.

[0068] The protrusion 121 - 1 according to Embodiment 1 may have a substantially rectangular parallelepiped shape to be easily fixed in a state of being inserted into the recess 122 - 1 .

[0069] Each of the protrusions 121 - 1 and the recesses 122 - 1 may be provided in plural. The protrusions 121 - 1 may be spaced apart from each other at a certain angle in the circumferential direction of the first rotating plate 121 , and the recesses 122 - 1 may be spaced apart from each other at a certain angle in the circumferential direction of the second rotating plate 122 .

[0070] The protrusions 121-1 may be spaced apart at the same angle as the recesses 122-1. Therefore, whenever the first and second rotating plates 121 and 122 rotate relative to each other by the above angle, the first and second rotating plates 121 and 122 may be fixed to each other again.

[0071] For example, two protruding portions 121 - 1 and two recessed portions 122 - 1 according to Embodiment 1 of the present invention may be formed.

[0072] Reference Figure 3 , the protrusion 121-1 may be formed on the edge of the first rotating plate 121, and the two protrusions 121-1 may be arranged in a straight line which may be the diameter of one surface of the first rotating plate 121 having a substantially circular shape. That is, the two protrusions 121-1 may be spaced apart from each other at an angle of 180 degrees.

[0073] Similarly, the recessed parts 122-1 may be formed at both ends of the second rotating plate 122, and the two recessed parts 122-1 may be provided with a straight line which may be the diameter of one surface of the second rotating plate 122 having a substantially circular shape. That is, the two recessed parts 122-1 may be spaced apart from each other at an angle of 180 degrees.

[0074] Since two protrusions 121 - 1 and two recesses 122 - 1 are formed at positions corresponding to each other, when the first rotating plate 121 or the second rotating plate 122 rotates by an angle of 180 degrees in a state of being fixed to each other, the first rotating plate 121 or the second rotating plate 122 is fixed to each other again.

[0075] Therefore, even when rotated at an angle of 180 degrees, the first rotation plate 121 or the second rotation plate 122 may be effectively fixed to each other.

[0076] Figure 4 is a schematic perspective view illustrating a battery cell 110, a first terminal 130, and a second terminal 140 of a secondary battery module 100 according to Embodiment 1 of the present invention, and Figure 5 1 is a schematic diagram illustrating a state in which the first terminal 130 and the second terminal 140 are provided on the battery cell 110 of the secondary battery module 100 according to Embodiment 1 of the present invention.

[0077] Specifically, Figure 5(A) schematically illustrates when viewed from above Figure 4 The battery cell is 110. Figure 5 (B) schematically illustrates the Figure 4 When viewing from the left side of Figure 4 The battery cell is 110, and Figure 4 (C) schematically illustrates that when Figure 4 When viewing from the right side of Figure 4 The battery cell 110.

[0078] The secondary battery module 100 according to Embodiment 1 of the present invention may further include a first terminal 130 and a second terminal 140 .

[0079] Reference Figure 4 , the first terminal 130 and the second terminal 140 may be disposed on both sides of one surface or the other surface of the battery cell 110 .

[0080] Here, the first terminal 130 and the second terminal 140 may have opposite polarities.

[0081] The first terminal 130 may include an upper first terminal 131 , a lower first terminal 132 , and a symmetrical first terminal 133 , and the second terminal 140 may include an upper second terminal 141 , a lower second terminal 142 , and a symmetrical second terminal 143 .

[0082] Reference Figure 5 , the upper first terminal 131 may be disposed to protrude toward another battery cell 110 disposed to face one surface of the battery cell 110, and the lower first terminal 132 may be disposed on the same plane as on the one surface of the battery cell 110. Here, the lower first terminal 132 may be disposed below the upper first terminal 131.

[0083] The symmetrical first terminals 133 may be disposed on the same plane of the other surface opposite to one side of the battery cell 110. Here, the symmetrical first terminals 133 may be disposed at positions on the other surface corresponding to the upper first terminals 131 on the one surface.

[0084] Reference Figure 5 , the upper second terminal 141 may be disposed to protrude toward another battery cell 110 disposed to face another surface of the battery cell 110, and the lower second terminal 142 may be disposed on the same plane as on another surface of the battery cell 110. Here, the lower second terminal 142 may be disposed below the upper second terminal 141.

[0085] The symmetrical second terminals 143 may be disposed on the same plane of one surface opposite to the other surface of the battery cell 110. Here, the symmetrical second terminals 143 may be disposed at positions on the one surface corresponding to the upper second terminals 141 on the other surface.

[0086] Figure 6 1 is a schematic diagram illustrating a state in which the battery cells 110 according to Embodiment 1 of the present invention are connected to each other through the first terminal 130 and the second terminal 140 of the secondary battery module 100 .

[0087] Specifically, Figure 6 (A) schematically illustrates a state where one battery cell 110a and another battery cell 110b are connected in parallel to each other, and Figure 6 (B) in FIG. 1 illustrates a state in which one battery cell 110 a and the other battery cell 110 b are connected in series to each other.

[0088] The first terminal 130 and the second terminal 140 of the secondary battery module 100 according to Embodiment 1 of the present invention may have opposite polarities and may be electrically connected through contact therebetween.

[0089] Reference Figure 6 In (A), the upper first terminal 131 of one battery cell 110a and the symmetrical first terminal 133 of another battery cell 110b contact each other, and the symmetrical second terminal 143 of one battery cell 110a and the upper second terminal 141 of another battery cell 110b contact each other to be connected in parallel. In this case, one battery cell 110a and another battery cell 110b can be parallel to each other.

[0090] Specifically, the upper first terminal 131 of one battery cell 110a may protrude to contact the symmetrical first terminal 133 of another battery cell 110b at a corresponding position, and the upper second terminal 141 of another battery cell 110b may protrude to contact the symmetrical second terminal 143 of one battery cell 110a at a corresponding position.

[0091] In addition, one battery cell 110 a may be connected in series to another battery cell 110 b in a state of being rotated at an angle of 180 degrees.

[0092] Reference Figure 6 In (B), when one battery cell 110a is rotated 180 degrees relative to another battery cell 110b, the upper first terminal 131 of one battery cell 110a and the lower second terminal of another battery cell 110b can contact each other, and the lower first terminal 132 of one battery cell 110a and the upper second terminal 141 of another battery cell 110b can contact each other to be connected in series.

[0093] Specifically, the upper first terminal 131 of one battery cell 110a rotated at an angle of 180 degrees can protrude to contact the lower second terminal 142 of another battery cell 110b at a corresponding position, and the upper second terminal 141 of another battery cell 110b can protrude to contact the lower first terminal 132 of one battery cell 110a rotated at a corresponding position.

[0094] The secondary battery module 100 may efficiently dispose the battery cells 110 by connecting the battery cells 110 in series or in parallel through components included in the first terminal 130 and components included in the second terminal 140 , and thus, efficiency may be improved when designing a secondary battery pack.

[0095] Figure 7 is a schematic perspective view illustrating a secondary battery module 200 according to Embodiment 2 of the present invention, and Figure 8 2 is a schematic perspective view illustrating a rotating member 220 of a secondary battery module 200 according to Embodiment 2 of the present invention.

[0096] Specifically, Figure 8 (A) schematically illustrates a state in which the first rotating plate 221 and the second rotating plate 222 are in contact with each other, Figure 3 (B) schematically illustrates a state in which the first rotating plate 221 rotates while being spaced apart from the second rotating plate 222, and Figure 3 (C) schematically illustrates a state in which the rotating first rotating plate 221 and the second rotating plate 222 attract each other.

[0097] The present invention provides a secondary battery module 200 having different types as in Embodiment 2.

[0098] Hereinafter, a detailed description of the same configuration as that of the secondary battery module 100 according to Embodiment 1 of the present invention will be omitted.

[0099] Reference Figure 7 , the secondary battery module 200 according to Embodiment 2 of the present invention may include a battery cell 110 , a rotating member 220 , a first terminal 230 and a second terminal 240 .

[0100] The rotating member 220 may include a first rotating plate 221 and a second rotating plate 222. In addition, the first rotating plate 221 may include a protrusion 221-1, and the second rotating plate 222 may have a recess 222-1.

[0101] Reference Figure 8 Each of the first rotating plate 221 and the second rotating plate 222 may be formed in a substantially disc shape, and the first rotating plate 221 and the second rotating plate 222 may have substantially the same cross-sectional area. However, the shapes and areas of the first rotating plate 221 and the second rotating plate 222 are not limited thereto.

[0102] Four protrusions 221-1 and four recesses 222-1 according to Embodiment 2 of the present invention may be formed. The plurality of protrusions 221-1 may be spaced apart from each other at an angle of 90 degrees in the circumferential direction of the first rotating plate 221, and the plurality of recesses 222-1 may be spaced apart from each other at an angle of 90 degrees in the circumferential direction of the second rotating plate 222.

[0103] Reference Figure 8 , the protrusions 221-1 may be formed on four edges of the first rotating plate 221, and the four protrusions 221-1 may be arranged in a straight line which may be a diameter of one surface of the first rotating plate 221 having a substantially circular shape and a straight line of a different diameter which may be perpendicular to the diameter.

[0104] Similarly, recessed portions 222-1 may be formed at four edges of the second rotating plate 222, and four recessed portions 222-1 may be arranged in a straight line that may be a diameter of one surface of the second rotating plate 222 having a substantially circular shape and a straight line of a different diameter that may be perpendicular to the diameter.

[0105] Since four protrusions 221-1 and four recesses 222-1 are formed at positions corresponding to each other, the first rotating plate 221 or the second rotating plate 222 can be fixed to each other again whenever the first rotating plate 221 or the second rotating plate 222 rotates by an angle of 90 degrees in a state of being fixed to each other.

[0106] Therefore, the first rotating plate 221 or the second rotating plate 222 may be effectively fixed to each other even when rotated at angles of 90 degrees, 180 degrees, and 270 degrees.

[0107] Each of the first rotation plate 221 and the second rotation plate 222 according to Embodiment 2 of the present invention may include a magnetic material.

[0108] A force by magnetically attracting the first and second rotation plates 221 and 222 spaced apart from each other may be applied to the first and second rotation plates 221 and 222 .

[0109] The first rotating plate 221 or the second rotating plate 222 may be spaced apart from each other by the length-adjustable rotating shaft 123, and may rotate in a state of being spaced apart from each other. Here, a magnetic force may be applied to the first rotating plate 221 and the second rotating plate 222 in a state of being spaced apart from each other in a direction in which the first rotating plate 221 and the second rotating plate 222 are attracted to each other by magnetism. That is, an attractive force may be provided so that the first rotating plate 221 and the second rotating plate 222 rotating at a desired angle contact each other by magnetic force.

[0110] If each of the first rotating plate 221 and the second rotating plate 222 includes a magnetic material, the first rotating plate 221 and the second rotating plate 222 may move such that the first rotating plate 221 or the second rotating plate 222 contacts each other again after rotating.

[0111] Fig. 9 is a schematic perspective view illustrating a battery cell 110, a first terminal 230, and a second terminal 240 of a secondary battery module 200 according to Embodiment 2 of the present invention, and Fig.10 1 is a schematic perspective view illustrating a state in which a parallel connection member 250 and a series connection member 260 according to Embodiment 2 of the present invention are provided.

[0112] Specifically, Fig.10 (A) schematically illustrates a state where two battery cells 110 are connected in parallel to each other, and Fig.10 (B) schematically illustrates a state in which two battery cells 110 are connected in series with each other.

[0113] Reference Fig. 9 The first terminal 230 and the second terminal 240 of the secondary battery module 200 may have opposite polarities and may be respectively disposed at both ends of the plurality of battery cells 110. Here, the size of each of the first terminal 230 and the second terminal 240 may vary depending on the shape of the secondary battery module 200.

[0114] Since the secondary battery module 200 according to Embodiment 2 of the present invention includes the rotating member 220 disposed between the battery cells 110, the battery cells 110 may be disposed to be spaced apart from each other. In addition, the first terminal 230 and the second terminal 240 disposed in each battery cell 110 may also be disposed to be spaced apart from each other and may not contact each other. Therefore, the secondary battery module 200 requires an additional component capable of connecting the first terminal 230 and the second terminal 240 to each other.

[0115] As an example of a component capable of electrically connecting the first terminal 230 and the second terminal 240 to each other, the secondary battery module 200 according to Embodiment 2 of the present invention may further include at least one of a parallel connection member 250 or a series connection member 260 .

[0116] The parallel connection member 250 may electrically connect the first terminals 230 to each other or the second terminals 240 to each other, and the series connection member 260 may electrically connect the first terminal 230 and the second terminal 240 to each other.

[0117] Reference Fig.10 The parallel connection member 250 and the series connection member 260 may be disposed at opposite sides of the battery cell 110 based on the first terminal 230 or the second terminal disposed at both ends of the battery cell 110 .

[0118] The parallel connection member 250 may have various shapes according to the number of terminals having the same polarity connected to each other.

[0119] The secondary battery module 200 according to Embodiment 2 of the present invention may include a parallel connection member 250 and a series connection member 260 so as to be efficiently disposed by series connection or parallel connection.

[0120] The secondary battery module 100 according to Embodiment 1 of the present invention and the secondary battery module 200 according to Embodiment 2 of the present invention may be easily arranged in series or in parallel for electrical connection between the battery cells 110 inside the secondary battery pack, thereby improving efficiency in designing the second battery pack.

[0121] In this regard, an example of an electrical arrangement between the battery cells 110 is briefly described as follows.

[0122] The secondary battery modules 100 and 200 including 12 battery cells 110 can be easily changed to a form in which 12 battery cells 110 are connected in series, or a form in which six pairs of two battery cells 110 are connected in parallel are connected in series. In addition, a form in which four pairs of three battery cells 110 are connected in parallel are connected in series, or a form in which three pairs of four battery cells 110 are connected in parallel are connected in series can also be easily realized.

[0123] Therefore, the secondary battery modules 100 and 200 of the present invention may be easily designed in various forms to be disposed inside a secondary battery pack.

[0124] While embodiments of the present invention have been described with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

[0125] [reference numerals list]

[0126] 100, 200: Secondary battery module

[0127] 110, 110a, 110b: battery cells

[0128] 120, 220: Rotating components

[0129] 121, 221: First rotating plate

[0130] 121-1, 221-1: Protrusion

[0131] 122, 222: Second rotating plate

[0132] 122-1, 222-1: Depression

[0133] 123: Rotation axis

[0134] 130, 230: First terminal

[0135] 131: Upper first terminal

[0136] 132: Lower first terminal

[0137] 133: Symmetrical first terminal

[0138] 140, 240: Second terminal

[0139] 141: Upper second terminal

[0140] 142: Lower second terminal

[0141] 143: Symmetrical second terminal

[0142] 250: Parallel connection components

[0143] 260: Series connection components

Claims

1. A secondary battery module, comprising: a plurality of battery cells, the plurality of battery cells being arranged to face each other; as well as a rotating member disposed between a surface of one battery cell and a surface of another battery cell facing each other among the plurality of battery cells, wherein the one battery cell rotates relative to the another battery cell, Wherein, the rotating component comprises: a first rotating plate disposed at the center of the surface of the one battery cell; a second rotating plate disposed at the center of the surface of the other battery cell; and A rotation shaft is configured to connect the first rotation plate to the second rotation plate so that the first rotation plate and the second rotation plate are rotatable relative to each other and extends in a direction orthogonal to surfaces of the plurality of battery cells. 2 . The secondary battery module according to claim 1 , further comprising an adhesive material attaching the rotating member to the battery cell.

3. The secondary battery module according to claim 1, wherein: The rotating shaft has an elastic force that attracts the first rotating plate and the second rotating plate that are spaced apart from each other.

4. The secondary battery module according to claim 1, wherein: The first rotating plate and the second rotating plate include magnetic materials that attract each other.

5. The secondary battery module according to claim 1, wherein: The first rotating plate includes a protrusion protruding toward the second rotating plate, and The second rotating plate includes a recessed portion recessed in a shape corresponding to a shape of the protruding portion, wherein the second rotating plate is rotated by the rotating shaft, and the protruding portion is inserted into the recessed portion so that the first rotating plate and the second rotating plate are fixed to each other.

6. The secondary battery module according to claim 5, wherein: Each of the protrusion and the recess is formed in two, so that when the first rotating plate or the second rotating plate is rotated by an angle of 180 degrees in a state of being fixed to each other, the first rotating plate and the second rotating plate are fixed to each other again.

7. The secondary battery module according to claim 5, wherein: Each of the protrusions and the recesses is formed in four, so that when the first rotating plate or the second rotating plate is rotated by an angle of 90 degrees in a state of being fixed to each other, the first rotating plate and the second rotating plate are fixed to each other again.

8. The secondary battery module according to claim 1, further comprising: A first terminal, which is disposed on an edge of one surface or another surface of the battery cell; as well as a second terminal, the second terminal being arranged on an edge of the one surface or the other surface of the battery cell opposite to the first terminal, Wherein, the first terminal comprises: an upper first terminal, the upper first terminal being arranged to protrude from a surface of the one battery cell toward the other battery cell; a lower first terminal disposed on the same plane as the one surface of the one battery cell; and a symmetrical first terminal, the symmetrical first terminal being arranged at a position corresponding to the upper first terminal on the same plane as the other surface of the one battery cell, and The second terminal comprises: an upper second terminal, the upper second terminal being arranged to protrude from the other surface of the one battery cell toward another battery cell facing the one battery cell; a lower second terminal disposed on the same plane as the other surface of the one battery cell; and a symmetrical second terminal, the symmetrical second terminal being arranged at a position corresponding to the upper second terminal on the same plane as the one surface of the one battery cell, The first terminal and the second terminal have opposite polarities and are connected to each other at positions corresponding to each other to fix the battery cell.

9. The secondary battery module according to claim 8, wherein: In the first terminal and the second terminal, When the one battery cell is parallel to the other battery cell, the upper first terminal of the one battery cell and the symmetrical first terminal of the other battery cell contact each other, and the symmetrical second terminal of the one battery cell and the upper second terminal of the other battery cell contact each other to be connected in parallel, and When the one battery cell is rotated at an angle of 180 degrees relative to the other battery cell, the upper first terminal of the one battery cell and the lower second terminal of the other battery cell contact each other, and the lower first terminal of the one battery cell and the upper second terminal of the other battery cell contact each other to be connected in series.

10. The secondary battery module according to claim 1, wherein: First terminals and second terminals having opposite polarities are provided at both ends of the plurality of battery cells, and The secondary battery module further includes at least one of the following: a parallel connection member configured to electrically connect the first terminals to each other or to electrically connect the second terminals to each other; or A series connection member is configured to electrically connect the first terminal to the second terminal.

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