Secondary battery module

Abstract

To provide a secondary battery module that can be disposed in various forms inside a secondary battery pack, facilitates series or parallel settings between cells inside, and can improve efficiency when the secondary battery pack is designed.SOLUTION: A secondary battery module may include a plurality of cells disposed so as to face each other, and a rotating member disposed between a surface of one cell and a surface of the other cell facing each other in the plurality of cells to rotate the one cell with respect to the other cell.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0039953 filed on March 30, 2022, and all the contents disclosed in the literature of the Korean patent application are incorporated herein by reference in their entirety.

[0002] The present invention relates to a secondary battery module, and more particularly, to a secondary battery module including a plurality of cells.

Background Art

[0003] In recent years, with the increase in the price of energy sources due to the depletion of fossil fuels and the growing concern about environmental pollution, the demand for environmentally friendly alternative energy sources has become an essential and indispensable factor for future life. Therefore, research on various power generation technologies such as solar power, wind power, and tidal power has continued, and a great deal of attention has also been paid to power storage devices such as batteries for more efficiently utilizing the electrical energy produced in this way.

[0004] In addition, as the technology development and demand for electronic mobile devices and electric vehicles using batteries increase, the demand for batteries as an energy source has increased rapidly, and thus, many studies on batteries that can meet various requirements have been conducted.

[0005] Batteries for storing electrical energy are generally classified into primary batteries and secondary batteries. Primary batteries are disposable consumable batteries, while secondary batteries are rechargeable batteries manufactured using materials capable of repeating the oxidation and reduction processes between current and substances. That is, when a reduction reaction of the material occurs due to current, the power source is charged, and when an oxidation reaction of the material occurs, the power source is discharged, and electricity is generated by repeating such charging and discharging.

[0006] On the one hand, in recent years, with the increasing need for large-capacity structures, including their use as energy storage sources, the demand for secondary battery packs that combine multiple cells or secondary battery modules has been increasing, and thereby, the demand for secondary battery modules has also been increasing.

[0007] Conventional secondary battery modules had their structures fixed by frames for manufacturing secondary battery packs. Also, due to the arrangement, the directions and positions of the terminals were fixed, resulting in the problem that the degree of freedom in the internal design of the secondary battery pack was restricted.

[0008] To solve such problems, there is a demand for secondary battery modules that can relatively freely perform internal design of secondary battery packs and can be applied in various forms.

Summary of the Invention

Problems to be Solved by the Invention

[0009] The present invention has been made to solve the above problems, and the object of the present invention is to provide a secondary battery module that can be arranged in various forms inside a secondary battery pack, enables easy series or parallel setting between internal cells, and can improve the efficiency during the design of the secondary battery pack.

Means for Solving the Problems

[0010] The secondary battery module according to the present invention may include a plurality of cells arranged to face each other, and a rotating member disposed between the surfaces of one cell and the other cell that face each other among the plurality of cells, for rotating one cell with respect to the other cell.

[0011] The secondary battery module may further include an adhesive substance for attaching the rotating member and the cell.

[0012] The rotating member may include a first rotating plate disposed at the center of the surface of one cell, a second rotating plate disposed at the center of the surface of the other cell, and a rotating shaft that rotatably connects the first rotating plate and the second rotating plate to each other and extends in a direction orthogonal to the surfaces of the plurality of cells.

[0013] The rotating shaft may have an elastic force so as to attract the first rotating plate and the second rotating plate spaced apart from each other.

[0014] The first rotating plate and the second rotating plate may include a magnetic substance and be configured such that a force of attracting each other acts thereon.

[0015] The first rotating plate may include a protrusion protruding toward the second rotating plate, and the second rotating plate may be formed with a recessed portion that indents into a shape corresponding to the protrusion. The first rotating plate and the second rotating plate may be rotated by the rotating shaft, and the protrusion may be inserted into the recessed portion so as to be fixed to each other.

[0016] Two protrusions and two recessed portions may be formed respectively. When the first rotating plate or the second rotating plate rotates 180 degrees in a state where the first rotating plate and the second rotating plate are fixed to each other, they may be fixed to each other again.

[0017] Four protrusions and four recessed portions may be formed respectively. When the first rotating plate or the second rotating plate rotates 90 degrees in a state where the first rotating plate and the second rotating plate are fixed to each other, they may be fixed to each other again.

[0018] The secondary battery module further includes a first terminal disposed at an edge of one surface or the other surface of the cell, and a second terminal disposed at an edge of the cell on the side opposite to the first terminal on one surface or the other surface. The first terminal includes a first upper terminal disposed to protrude from one surface of one cell toward the other cell, a first lower terminal disposed on the same plane on one surface of one cell, and a first symmetric terminal disposed at a position corresponding to the first upper terminal on the same plane on the other surface of one cell. The second terminal includes a second upper terminal disposed to protrude from the other surface of one cell toward the other cell facing it, a second lower terminal disposed on the same plane on the other surface of one cell, and a second symmetric terminal disposed at a position corresponding to the second upper terminal on the same plane on one surface of one cell. The first terminal and the second terminal may have opposite polarities to each other and may be coupled at corresponding positions to fix the cells.

[0019] When one cell is arranged next to the other cell, the first upper terminal of one cell and the first symmetric terminal of the other cell come into contact with each other, and the second symmetric terminal of one cell and the second upper terminal of the other cell come into contact with each other, enabling parallel connection. When one cell rotates 180 degrees with respect to the other cell, the first upper terminal of one cell and the second lower terminal of the other cell come into contact with each other, and the first lower terminal of one cell and the second upper terminal of the other cell come into contact with each other, enabling series connection.

[0020] The secondary battery module may be further configured to include at least one of a parallel connection member that electrically connects the first terminals to each other or electrically connects the second terminals to each other, and a series connection member that electrically connects the first terminal and the second terminal at both ends of a plurality of cells.

Advantages of the Invention

[0021] The secondary battery module according to the present invention may include a plurality of cells arranged to face each other, and a rotating member disposed between the surfaces of one cell and the other cell that face each other among the plurality of cells, and configured to rotate one cell with respect to the other cell.

[0022] Thereby, it can be arranged in various forms inside the secondary battery pack, the series or parallel setting between the internal cells is easy, and the efficiency in designing the secondary battery pack can be improved.

Brief Description of Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0024] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail so that those having ordinary knowledge in the technical field to which the present invention pertains can easily implement it. However, the present invention can be realized in various different forms and is not limited or restricted to the following embodiments.

[0025] To clearly explain the present invention, a detailed description of parts not related to the explanation or related known technologies that may obscure the gist of the present invention is omitted. When adding reference signs to the components of each drawing in this specification, the same or similar reference signs are given to the same or similar components throughout the specification.

[0026] Note that the terms and words used in this specification and the claims should not be construed as being limited to their ordinary or dictionary meanings. Based on the principle that the inventor can appropriately define the concept of the terms in order to explain his invention in the best possible way, they should be construed as meanings and concepts consistent with the technical idea of the present invention.

[0027] FIG. 1 is a perspective view schematically showing a secondary battery module 100 according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view schematically showing a state where the cell 110 of the secondary battery module 100 according to Embodiment 1 of the present invention rotates.

[0028] The present invention provides a secondary battery module 100 as Embodiment 1.

[0029] The secondary battery module 100 according to Embodiment 1 of the present invention may include a cell 110 and a rotating member 120.

[0030] Referring to FIG. 1, a plurality of cells 110 of the secondary battery module 100 may be arranged to face each other. Here, the cell 110 may mean a pouch cell.

[0031] The cells 110 may be arranged parallel to each other, and the secondary battery module 100 according to Embodiment 1 may include 12 cells 110.

[0032] The rotating member 120 of the secondary battery module 100 is disposed between the surface of one cell 110a (see FIG. 6) facing each other among the plurality of cells 110 and the surface of the other cell 110b, and may be configured to rotate one cell 110a with respect to the other cell 110b. The one cell 110a does not mean a specific cell, but may mean any cell among the plurality of cells 110. Further, the other cell 110b may mean a cell adjacent to the one cell 110a.

[0033] FIG. 2 shows a state in which one cell 110 disposed on the outermost side is rotated by about 90 degrees. Referring to FIG. 2, each cell 110 is rotatable with respect to the other cell 110 by the rotating member 120. Here, the cell 110 is rotatable 360 degrees.

[0034] By the rotating member 120, the secondary battery module 100 can efficiently change the state in which the cells 110 are arranged.

[0035] The secondary battery module 100 according to Embodiment 1 of the present invention may further include an adhesive substance (not shown). The rotating member 120, more specifically, the rotating plates 121 and 122 (see FIG. 3) described later, may be attached to the cell 110 by the adhesive substance.

[0036] Specifically, the adhesive substance may be applied to a part of the surface of the cell 110 where the rotating member 120 is disposed.

[0037] By the adhesive substance, the cell 110 and the rotating member 120 of the secondary battery module 100 are adhered to each other and efficiently fixed.

[0038] FIG. 3 is a perspective view schematically showing a rotating member 120 of a secondary battery module 100 according to Embodiment 1 of the present invention.

[0039] Specifically, (A) of FIG. 3 schematically shows a state in which the first rotating plate 121 and the second rotating plate 122 are in contact with each other, (B) schematically shows a state in which the first rotating plate 121 rotates while being separated from the second rotating plate 122, and (C) schematically shows a state in which the rotated first rotating plate 121 and the second rotating plate 122 attract each other.

[0040] 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.

[0041] The first rotating plate 121 may be disposed at the center of the surface of one cell 110a, and the second rotating plate 122 may be disposed at the center of the surface of the other cell 110b.

[0042] Referring to FIG. 3, the first rotating plate 121 and the second rotating plate 122 may be formed in a substantially disc shape, and the first rotating plate 121 and the second rotating plate 122 may have substantially the same cross-sectional area. However, the shapes and areas of the respective rotating plates 121 and 122 are not limited thereto.

[0043] The rotating shaft 123 may rotatably connect the first rotating plate 121 and the second rotating plate 122 to each other, and may be formed to extend in a direction perpendicular to the surfaces of the plurality of cells 110.

[0044] Specifically, the rotating shaft 123 may be formed in a substantially shaft shape, and may have a cross-sectional area smaller than the cross-sectional areas of the first rotating plate 121 and the second rotating plate 122.

[0045] Furthermore, the rotating shaft 123 according to Embodiment 1 may be disposed at the center of the surface of the first rotating plate 121 or the second rotating plate 122.

[0046] The first rotating plate 121 or the second rotating plate 122 rotates about the rotation axis 123, and the cells 110 may rotate together due to the rotation of the first rotating plate 121 or the second rotating plate 122.

[0047] Due to the configuration included in the rotating member 120, each cell 110 can rotate efficiently.

[0048] The rotation axis 123 of the rotating member 120 according to Embodiment 1 of the present invention may have an elastic force. Specifically, the rotation axis 123 may be made of a material having an elastic force.

[0049] The rotation axis 123 may be configured to attract the first rotating plate 121 and the second rotating plate 122 that are separated from each other by an elastic force. The first rotating plate 121 or the second rotating plate 122 may be configured to rotate in a separated state from each other. An elastic force acts on the first rotating plate 121 and the second rotating plate 122 that are separated from each other in a direction to attract each other by the rotation axis 123. That is, due to the elastic force of the rotation axis 123, a force is provided to attract the first rotating plate 121 and the second rotating plate 122 that have rotated by a desired angle so as to come into contact with each other.

[0050] When the rotation axis 123 has an elastic force, after rotation, the first rotating plate 121 or the second rotating plate 122 moves efficiently so as to come into contact again.

[0051] The first rotating plate 121 of the rotating member 120 according to Embodiment 1 of the present invention may include a protrusion 121-1, and the second rotating plate 122 may be formed such that a recessed portion 122-1 is formed.

[0052] The protrusion 121-1 is formed to protrude from one surface of the first rotating plate 121 toward the second rotating plate 122, and the recessed portion 122-1 may be formed in a shape corresponding to the protrusion 121-1 and recessed into one surface of the second rotating plate 122.

[0053] When the protruding portion 121-1 is inserted into the recessed portion 122-1, the first rotating plate 121 and the second rotating plate 122 are efficiently fixed to each other.

[0054] The protruding portion 121-1 according to Embodiment 1 may have a substantially rectangular parallelepiped shape so as to be easily fixed in a state of being inserted into the recessed portion 122-1.

[0055] A plurality of protruding portions 121-1 and a plurality of recessed portions 122-1 may be provided respectively. The plurality of protruding portions 121-1 may be separated by a predetermined angle in the circumferential direction of the first rotating plate 121, and the plurality of recessed portions 122-1 may be separated by a predetermined angle in the circumferential direction of the second rotating plate 122.

[0056] The angle at which the plurality of protruding portions 121-1 are separated from each other and the angle at which the plurality of recessed portions 122-1 are separated from each other may be the same. Therefore, every time the first rotating plate 121 and the second rotating plate 122 rotate relative to each other by the said angle, the first rotating plate 121 and the second rotating plate 122 are fixed to each other again.

[0057] For example, two protruding portions 121-1 and two recessed portions 122-1 according to Embodiment 1 of the present invention may be formed respectively.

[0058] Referring to FIG. 3, the protruding portion 121-1 is formed at the edge of the first rotating plate 121, and the two protruding portions 121-1 may be placed on a line that is the diameter of one surface of the first rotating plate 121 having a substantially circular shape. That is, the two protruding portions 121-1 may be separated at an angle of 180 degrees.

[0059] Similarly, the recessed portion 122-1 is formed at both ends of the second rotating plate 122, and the two recessed portions 122-1 may be placed on a line that is the diameter of one surface of the second rotating plate 122 having a substantially circular shape. That is, the two recessed portions 122-1 may be separated at an angle of 180 degrees.

[0060] The protruding portions 121-1 and the recessed portions 122-1 formed at corresponding positions with respect to each other are formed in pairs. When the first rotating plate 121 or the second rotating plate 122 rotates 180 degrees while the first rotating plate 121 and the second rotating plate 122 are fixed to each other, they are fixed to each other again.

[0061] Therefore, the first rotating plate 121 or the second rotating plate 122 is efficiently fixed to each other even in a state of being rotated 180 degrees.

[0062] FIG. 4 is a perspective view schematically showing the cell 110, the first terminal 130, and the second terminal 140 of the secondary battery module 100 according to Embodiment 1 of the present invention, and FIG. 5 is a view schematically showing a state in which the first terminal 130 and the second terminal 140 are arranged on the cell 110 of the secondary battery module 100 according to Embodiment 1 of the present invention.

[0063] Specifically, (A) of FIG. 5 schematically shows a state of viewing the cell 110 of FIG. 4 from above, (B) schematically shows a state of viewing the cell 110 of FIG. 4 from the left side with FIG. 4 as a reference, and (C) schematically shows a state of viewing the cell 110 of FIG. 4 from the right side with FIG. 4 as a reference.

[0064] 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.

[0065] Referring to FIG. 4, the first terminal 130 and the second terminal 140 may be arranged on both side portions of one surface or the other surface of the cell 110.

[0066] Here, the first terminal 130 and the second terminal 140 may have opposite polarities to each other.

[0067] The first terminal 130 may include a first upper terminal 131, a first lower terminal 132, and a first symmetric terminal 133, and the second terminal 140 may include a second upper terminal 141, a second lower terminal 142, and a second symmetric terminal 143.

[0068] Referring to FIG. 5, the first upper terminal 131 is arranged to protrude from one side of the cell 110 toward the other cell 110 arranged opposite thereto, and the first lower terminal 132 may be arranged on the same plane on one side of the cell 110. Here, the first lower terminal 132 may be arranged below the first upper terminal 131.

[0069] The first symmetric terminal 133 may be arranged on the same plane on the other side which is the opposite side of one side of the cell 110. Here, the first symmetric terminal 133 may be arranged at a position on the other side corresponding to the first upper terminal 131 on one side.

[0070] Referring to FIG. 5, the second upper terminal 141 is arranged to protrude from the other side of the cell 110 toward the other cell 110 arranged opposite thereto, and the second lower terminal 142 may be arranged on the same plane on the other side of the cell 110. Here, the second lower terminal 142 may be arranged below the second upper terminal 141.

[0071] The second symmetric terminal 143 may be arranged on the same plane on one side which is the opposite side of the other side of the cell 110. Here, the second symmetric terminal 143 may be arranged at a position on one side corresponding to the second upper terminal 141 on the other side.

[0072] FIG. 6 is a diagram schematically showing a state in which cells 110 are connected to each other by the first terminal 130 and the second terminal 140 of the secondary battery module 100 according to Embodiment 1 of the present invention.

[0073] Specifically, (A) of FIG. 6 schematically shows a state in which one cell 110a and the other cell 110b are connected in parallel to each other, and (B) schematically shows a state in which one cell 110a and the other cell 110b are connected in series to each other.

[0074] The first terminal 130 and the second terminal 140 of the secondary battery module 100 according to Embodiment 1 of the present invention have opposite polarities to each other and can be electrically connected by contact.

[0075] Referring to FIG. 6(A), the first upper terminal 131 of one cell 110a may be in contact with the first symmetric terminal 133 of the other cell 110b, and the second symmetric terminal 143 of one cell 110a may be in contact with the second upper terminal 141 of the other cell 110b to be connected in parallel. In this case, one cell 110a and the other cell 110b are arranged side by side with each other.

[0076] Specifically, the first upper terminal 131 of one cell 110a may protrude and contact the first symmetric terminal 133 of the other cell 110b at the corresponding position, and the second upper terminal 141 of the other cell 110b may protrude and contact the second symmetric terminal 143 of one cell 110a at the corresponding position.

[0077] Also, one cell 110a can be connected in series with the other cell 110b in a state of being rotated by 180 degrees.

[0078] Referring to FIG. 6(B), when one cell 110a is rotated by 180 degrees with respect to the other cell 110b, the first upper terminal 131 of one cell 110a may be in contact with the second lower terminal 142 of the other cell 110b, and the first lower terminal 132 of one cell 110a may be in contact with the second upper terminal 141 of the other cell 110b to be connected in series.

[0079] Specifically, the first upper terminal 131 of one cell 110a rotated by 180 degrees may protrude and contact the second lower terminal 142 of the other cell 110b at the corresponding position, and the second upper terminal 141 of the other cell 110b may protrude and contact the first lower terminal 132 of the rotated one cell 110a at the corresponding position.

[0080] The secondary battery module 100 can efficiently set the cells 110 to be connected in series or in parallel by the configuration included in the first terminal 130 and the configuration included in the second terminal 140, thereby improving the efficiency during the design of the secondary battery pack.

[0081] FIG. 7 is a perspective view schematically showing a secondary battery module 200 according to Embodiment 2 of the present invention, and FIG. 8 is a perspective view schematically showing a rotating member 220 of the secondary battery module 200 according to Embodiment 2 of the present invention.

[0082] Specifically, (A) of FIG. 8 schematically shows a state where the first rotating plate 221 and the second rotating plate 222 are in contact with each other, (B) schematically shows a state where the first rotating plate 221 rotates while being separated from the second rotating plate 222, and (C) schematically shows a state where the rotated first rotating plate 221 and the second rotating plate 222 attract each other.

[0083] The present invention provides another form of the secondary battery module 200 as Embodiment 2.

[0084] Hereinafter, the detailed description of the configuration similar to that of the secondary battery module 100 according to Embodiment 1 of the present invention will be omitted.

[0085] Referring to FIG. 7, the secondary battery module 200 according to Embodiment 2 of the present invention may include a cell 110, a rotating member 220, a first terminal 230, and a second terminal 240.

[0086] The rotating member 220 may include a first rotating plate 221 and a second rotating plate 222. Further, the first rotating plate 221 may include a protrusion 221-1, and the second rotating plate 222 may be formed such that a recessed portion 222-1 is formed.

[0087] Referring to FIG. 8, 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 respective rotating plates 221 and 222 are not limited thereto.

[0088] According to Embodiment 2 of the present invention, four protrusions 221-1 and four recessed portions 222-1 may be formed respectively. The plurality of protrusions 221-1 may be spaced 90 degrees apart from each other in the circumferential direction of the first rotating plate 221, and the plurality of recessed portions 222-1 may be spaced 90 degrees apart from each other in the circumferential direction of the second rotating plate 222.

[0089] Referring to FIG. 8, the protrusions 221-1 are formed at four edges of the first rotating plate 221, and the four protrusions 221-1 may be placed on a line that is the diameter of one surface of the first rotating plate 221 having a substantially circular shape and on another line that is a diameter perpendicular to the diameter.

[0090] Similarly, the recessed portions 222-1 are formed at four edges of the second rotating plate 222, and the four recessed portions 222-1 may be placed on a line that is the diameter of one surface of the second rotating plate 222 having a substantially circular shape and on another line that is a diameter perpendicular to the diameter.

[0091] The protrusions 221-1 and the recessed portions 222-1 formed at corresponding positions are formed in fours, so that every time the first rotating plate 221 or the second rotating plate 222 rotates 90 degrees in a state where the first rotating plate 221 and the second rotating plate 222 are fixed to each other, they are fixed to each other again.

[0092] Therefore, the first rotating plate 221 and the second rotating plate 222 are efficiently fixed to each other even when they are rotated 90 degrees, 180 degrees, and 270 degrees.

[0093] The first rotating plate 221 and the second rotating plate 222 according to Embodiment 2 of the present invention may contain a magnetic substance.

[0094] A force that attracts the first rotating plate 221 and the second rotating plate 222 separated from each other by magnetism acts on the first rotating plate 221 and the second rotating plate 222.

[0095] The first rotating plate 221 or the second rotating plate 222 can be separated from each other by a rotatable shaft 123 with adjustable length and can rotate in a separated state. Here, a magnetic force acts in a direction of attracting each other between the first rotating plate 221 and the second rotating plate 222 in a separated state. That is, a force is provided by the magnetic force to attract the first rotating plate 221 and the second rotating plate 222 that have rotated by a desired angle so as to come into contact with each other.

[0096] When the first rotating plate 221 and the second rotating plate 222 contain a magnetic substance, after rotation, the first rotating plate 221 or the second rotating plate 222 moves so as to efficiently come into contact again.

[0097] FIG. 9 is a perspective view schematically showing a 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 is a perspective view schematically showing a state in which a parallel connection member 250 and a series connection member 260 are arranged according to Embodiment 2 of the present invention.

[0098] Specifically, (A) in FIG. 10 schematically shows a state in which two cells 110 are connected in parallel to each other, and (B) schematically shows a state in which two cells 110 are connected in series to each other.

[0099] Referring to 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 provided at both ends of a plurality of cells 110. Here, the sizes of the first terminal 230 and the second terminal 240 vary depending on the form of the secondary battery module 200.

[0100] Since the secondary battery module 200 according to Embodiment 2 of the present invention includes a rotating member 220 disposed between cells 110, the cells 110 are disposed in a separated state from each other. Also, the first terminals 230 and the second terminals 240 provided in each cell 110 are also disposed in a separated state from each other and do not contact each other. Therefore, the secondary battery module 200 requires an additional configuration for connecting the first terminal 230 and the second terminal 240 to each other.

[0101] As an example of a configuration for 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 and a series connection member 260.

[0102] The parallel connection member 250 may electrically connect the first terminals 230 to each other or electrically connect 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.

[0103] Referring to FIG. 10, the parallel connection member 250 and the series connection member 260 may be disposed on the opposite side of the cell 110 with reference to the first terminal 230 or the second terminal disposed at both ends of the cell 110.

[0104] The form of the parallel connection member 250 varies depending on the number of terminals having the same polarity that are connected to each other.

[0105] Since the secondary battery module 200 according to Embodiment 2 of the present invention includes the parallel connection member 250 and the series connection member 260, it is possible to efficiently set the cells 110 in series connection or parallel connection.

[0106] The secondary battery module 100 according to Embodiment 1 of the present invention and the secondary battery module 200 according to Embodiment 2 thereof are easy to set in series or parallel for electrical connection between the internal cells 110, and the efficiency in designing the secondary battery pack is improved.

[0107] In connection with this, an example for electrical setting between the cells 110 will be briefly described as follows.

[0108] The secondary battery modules 100 and 200 including 12 cells 110 can be easily changed into a form in which the 12 cells 110 are connected in series with each other, or a form in which 6 pairs of two cells 110 connected in parallel are connected in series with each other. Also, a form in which 4 pairs of three cells 110 connected in parallel are connected in series with each other, or a form in which 3 pairs of four cells 110 connected in parallel are connected in series with each other can be easily realized.

[0109] Therefore, the secondary battery modules 100 and 200 of the present invention can be easily designed in various forms for placement inside a secondary battery pack.

[0110] As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and various implementations are possible within the equivalent scope of the technical idea of the present invention and the appended claims by those having ordinary knowledge in the technical field to which the present invention pertains.

Explanation of Reference Numerals

[0111] 100, 200 Secondary battery module 110, 110a, 110b Cell 120, 220 Rotating member 121, 221 First rotating plate 121-1, 221-1 Protrusion 122, 222 Second rotating plate 122-1, 222-1 Recessed portion 123 Rotation axis 130, 230 First terminal 131 First upper terminal 132 First lower terminal 133 First symmetric terminal 140, 240 Second terminal 141 Second upper terminal 142 Second lower terminal 143 Second symmetric terminal 250 Parallel connection member 260 Series connection member

Claims

1. A plurality of cells arranged opposite each other; and A secondary battery module including a rotating member disposed between a surface of one cell and a surface of the other cell that face each other in two adjacent cells among the plurality of cells, and enabling the one cell to rotate relative to the other cell.

2. The secondary battery module according to claim 1 , wherein the rotating members are attached to the cells by an adhesive material.

3. The rotating member is a first rotating plate disposed at the center of a surface of the one of the cells; A second rotating plate disposed at the center of a face of the one cell opposite a face of the other cell; and The secondary battery module according to claim 1 , further comprising a rotation axis that rotatably connects the first rotating plate and the second rotating plate to each other and extends in a direction perpendicular to the surfaces of the plurality of cells.

4. The rotation axis is The secondary battery module according to claim 3 , wherein the first rotating plate and the second rotating plate spaced apart from each other have an elastic force that attracts each other.

5. The first rotating plate and the second rotating plate are The secondary battery module according to claim 3 , comprising a magnetic substance and exerting a mutually attractive force.

6. the first rotating plate includes a protrusion protruding toward the second rotating plate, The second rotating plate has an indentation formed in a shape corresponding to the protrusion, The secondary battery module of claim 3 , wherein the second rotating plate rotates on the rotating shaft, and the protrusion is inserted into the recess to fix the second rotating plate and the first rotating plate to each other.

7. The protrusion and the indentation are 7. The secondary battery module of claim 6, wherein two of each of the first and second rotating plates are formed, and when one of the first and second rotating plates rotates 180 degrees relative to the other of the first and second rotating plates while the first and second rotating plates are fixed to each other, the first and second rotating plates are fixed to each other again.

8. 7. The secondary battery module of claim 6, wherein the protrusions and the indentations are each formed in fours, and when one of the first rotating plate and the second rotating plate rotates 90 degrees relative to the other of the first rotating plate and the second rotating plate while the first rotating plate and the second rotating plate are fixed to each other, the protrusions and the indentations are fixed to each other again.

9. A first terminal disposed on an edge of one or the other surface of the cell; and The cell further includes a second terminal disposed on an edge of one or the other surface opposite to the first terminal, The first terminal is a first upper terminal disposed to protrude from one surface of the one cell toward the other cell; a first lower terminal disposed on the same plane on one surface of the one cell; and a first symmetric terminal disposed on the other surface of the one cell at a position corresponding to the first upper terminal on the same plane; The second terminal is a second upper terminal disposed to protrude from the other surface of the one cell toward the other opposing cell; a second lower terminal disposed on the same plane on the other surface of the one cell; and a second symmetric terminal disposed on one surface of the one cell at a position corresponding to the second upper terminal on the same plane; The secondary battery module of claim 1 , wherein the first terminal and the second terminal have opposite polarities and are coupled to each other at corresponding positions to fix the cells.

10. The first terminal and the second terminal are When the one cell is arranged next to the other cell, a first upper terminal of the one cell contacts a first symmetric terminal of the other cell, and a second symmetric terminal of the one cell contacts a second upper terminal of the other cell, thereby enabling a parallel connection; 10. The secondary battery module of claim 9, wherein when the one cell is rotated 180 degrees relative to the other cell, a first upper terminal of the one cell comes into contact with a second lower terminal of the other cell, and a first lower terminal of the one cell comes into contact with a second upper terminal of the other cell, thereby enabling a series connection.

11. The cells are provided at both ends with first and second terminals having opposite polarities, a parallel connection member that electrically connects the first terminals to each other or that electrically connects the second terminals to each other; and The secondary battery module according to claim 1 , further comprising at least one series connection member electrically connecting the first terminal and the second terminal.

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