Battery module with heat-generating function

Abstract

The present invention relates to a battery module with a heat-generating function, specifically a battery module including: a first frame having a plurality of cylindrical battery cells and receiving holes for receiving the plurality of cylindrical battery cells; a second frame having a plurality of holes cut out of a certain area on one side and coupled to the first frame; a heat-conducting pad positioned inside the second frame to cover the plurality of holes; and a receiving frame having a space for receiving a heat-generating solution and an operating part for activating the heat-generating solution, the interior of the receiving frame being provided with a heat-conducting part for heat conduction.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0118914, filed September 7, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a battery module with a heat generating function, and more particularly to a battery module with a heat generating function that can prevent a situation where charging is impossible in a low temperature state. [Background technology]

[0003] Recently, due to air pollution and energy depletion caused by the use of fossil fuels, there has been an increasing demand for secondary batteries capable of storing electrical energy produced by the development of alternative energy sources.

[0004] Secondary batteries are used as energy sources for various electronic devices that are essential in modern society, and the required capacity is increasing due to the increasing use and complexity of mobile devices and the development of electric vehicles, etc. To meet user demands, small devices are equipped with multiple battery cells, while automobiles and the like use battery modules in which multiple battery cells are electrically connected, or battery packs equipped with multiple such battery modules.

[0005] Meanwhile, secondary batteries cannot be charged even when electricity is supplied below a certain temperature, so charging small secondary batteries can be difficult in winter.

[0006] Fig. 1 is an exploded perspective view showing a battery module according to the prior art. As shown in Fig. 1, the battery module according to the prior art includes a plurality of battery cells 10, terminals 20 that electrically connect the plurality of battery cells 10, a holder case 30 that supports the battery cells 10 from their sides, and a module case 40 that houses the above-mentioned components.

[0007] The battery module according to the prior art does not have a separate temperature control function that can measure and control the temperature of the battery cells 10 .

[0008] Therefore, when a small device is attached to the battery, charging may not be possible in a low-temperature environment such as winter, and the device may become unusable. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Application Publication No. 10-2012-0054337 Summary of the Invention [Problem to be solved by the invention]

[0010] In order to solve the above problems, an object of the present invention is to provide a battery module having a heat generating function that can be charged in a low temperature environment. [Means for solving the problem]

[0011] In order to achieve the above object, the battery module with heat generating function according to the present invention includes a first frame (200) having a plurality of cylindrical battery cells (100) and receiving holes (210) for receiving the plurality of cylindrical battery cells (100); a second frame (300) having a plurality of holes (310) cut out of a certain area on one side and coupled to the first frame (200); a heat conduction pad (400) positioned inside the second frame (300) to cover the plurality of holes (310); and a receiving frame (500) having a space for receiving a heat generating solution (510) and an operating part (520) for activating the heat generating solution (510), and a heat conduction part (530) for heat conduction is provided inside the receiving frame (500).

[0012] In addition, in the battery module according to the present invention, the thermal conduction pad (400) is characterized in that a hole (410) capable of accommodating a part of the cylindrical battery cell (100) is formed at a position corresponding to the cylindrical battery cell (100).

[0013] In the battery module according to the present invention, the holes (310) are formed at positions corresponding to the holes (410).

[0014] In addition, in the battery module according to the present invention, the operating part (520) includes a vertical part (521) extending inside the accommodating frame (500) to form a certain space, a recessed part (522) located at the end of the vertical part (521) and recessed toward the space of the vertical part (521), and a rod-shaped pressing member (523) having one side in close contact with the recessed part (522) and the other side protruding outside the accommodating frame (500).

[0015] In the battery module according to the present invention, the pressing member 523 is characterized in that it includes an operation control section 524 at its outwardly protruding portion, which is capable of controlling the movement of the pressing member 523 .

[0016] The battery module according to the present invention is also characterized by comprising a switch cap portion (525) surrounding the outwardly protruding portion of the pressing member (523).

[0017] In the battery module according to the present invention, the heat conduction part (530) is positioned so that one side thereof is in close contact with the heat conduction pad (400) through the plurality of holes (310).

[0018] In addition, in the battery module according to the present invention, the thermal conduction part (530) is characterized by including a contact part (531) that is in close contact with the thermal conduction pad (400), and a plurality of extension pin parts (532) that extend from the contact part (531) toward the inside of the accommodating frame (500).

[0019] In addition, the battery module according to the present invention is characterized in that a thermally conductive adhesive material is applied between the thermally conductive pad (400) and the contact portion (531).

[0020] In addition, the battery module according to the present invention is characterized in that the outer surface of the receiving frame (500) is provided with an indicator (600) for indicating whether the operating part (520) needs to be operated.

[0021] In the battery module according to the present invention, the display unit (600) is characterized by comprising a battery management system (BMS).

[0022] In addition, in the battery module according to the present invention, the battery management system (BMS) is connected to the operation control unit (524) via a connection unit (610) and is connected to a temperature sensor unit (620) built into the internal space of the receiving frame (500).

[0023] In the battery module according to the present invention, the exothermic solution (510) is a supersaturated solution.

[0024] In the battery module according to the present invention, the supersaturated solution is a supersaturated aqueous solution of sodium acetate. [Effects of the Invention]

[0025] As described above, the battery module according to the present invention includes a heat generating solution, which is a supersaturated solution, and therefore has the advantage that it can generate heat and create a chargeable state when the battery module is at a low temperature.

[0026] Furthermore, the battery module according to the present invention has the advantage that the heat generated by the exothermic solution can be transferred to the cylindrical battery cells more efficiently since it includes the thermally conductive pad and the thermally conductive portion. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is an exploded perspective view showing a battery module according to the prior art. [Figure 2] 1 is a perspective view showing a battery module according to a preferred embodiment of the present invention; [Figure 3] 1 is an exploded perspective view showing a battery module according to a preferred embodiment of the present invention; [Figure 4] 1 is a cross-sectional view showing a battery module according to a preferred embodiment of the present invention; [Figure 5] FIG. 2 is an exploded perspective view showing a second frame and a thermal conduction pad according to a preferred embodiment of the present invention. [Figure 6] 1 is a perspective view showing a state before a heat conductive part is attached to a battery module according to a preferred embodiment of the present invention; [Figure 7] 10A and 10B are diagrams illustrating an operating state of an operating unit according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, with reference to the accompanying drawings, a detailed description will be given of an embodiment of the present invention that will enable a person of ordinary skill in the art to easily carry out the present invention. However, in describing the operation principle of the preferred embodiment of the present invention in detail, detailed description of related well-known functions or configurations will be omitted if it is determined that such detailed description may unnecessarily obscure the gist of the present invention.

[0029] Furthermore, the same reference numerals are used throughout the drawings for parts having similar functions and actions. Throughout the specification, when a part is said to be connected to another part, this includes not only a direct connection but also an indirect connection via another element therebetween. Furthermore, unless otherwise specified, "including a certain element" does not mean that other elements are excluded, but that other elements may also be included.

[0030] Hereinafter, a battery module with a heat generating function according to the present invention will be described with reference to the accompanying drawings.

[0031] FIG. 2 is a perspective view showing a battery module according to a preferred embodiment of the present invention, FIG. 3 is an exploded perspective view showing a battery module according to a preferred embodiment of the present invention, FIG. 4 is a cross-sectional view showing a battery module according to a preferred embodiment of the present invention, FIG. 5 is an exploded perspective view showing a second frame and a thermal conduction pad according to a preferred embodiment of the present invention, and FIG. 6 is a perspective view showing a state before a thermal conduction part is attached in a battery module according to a preferred embodiment of the present invention.

[0032] As shown in FIGS. 2 to 6, a battery module according to one embodiment of the present invention includes a cylindrical battery cell 100, a first frame 200, a second frame 300, a thermally conductive pad 400, a housing frame 500, and a display unit 600.

[0033] First, the cylindrical battery cell 100 includes an electrode assembly, a cap assembly, and a cylindrical battery case that houses these.

[0034] The electrode assembly may be a jelly roll type electrode assembly in which a separator is interposed between a long sheet-shaped positive electrode and a negative electrode and then wound up.

[0035] The positive electrode includes a positive electrode current collector and a positive electrode active material applied to the upper and lower surfaces of the positive electrode current collector.

[0036] The positive electrode current collector may generally have a thickness of 3 μm to 500 μm. There are no particular limitations on the material, as long as it does not cause chemical changes in the battery and has high conductivity. Examples of materials that can be used include stainless steel, aluminum, nickel, titanium, calcined carbon, and aluminum or stainless steel surface-treated with carbon, nickel, titanium, silver, etc. Furthermore, to increase the adhesive strength of the positive electrode active material, the surface may be finely textured, or the current collector may be in various forms, such as a film, sheet, foil, net, porous material, foam, or nonwoven fabric.

[0037] Positive electrode active materials include layered compounds such as lithium cobalt oxide (LiCoO2), lithium nickel oxide (LiNiO2), or compounds substituted with higher transition metals; 1+x Mn 2-x Lithium manganese oxides such as LiMnO4 (where x is 0 to 0.33), LiMnO3, LiMn2O3, and LiMnO2; lithium copper oxide (Li2CuO2); vanadium oxides such as LiV3O8, V2O5, and Cu2V2O7; and the chemical formula LiNi 1-x Ni-site type lithium nickel oxide represented by MxO2 (where M=Co, Mn, Al, Cu, Fe, Mg, B, or Ga, and x=0.01 to 0.3); chemical formula LiMn 2-x M x Lithium manganese composite oxides expressed as Li2Mn3MO8 (where M = Co, Ni, Fe, Cr, Zn, or Ta, and x = 0.01 to 0.1); LiMn2O4, in which part of the Li in the chemical formula is replaced by an alkaline earth metal ion; disulfide compounds; Fe2(MoO4)3, LiNi x Mn 2-x O4 (0.01≦x≦0.6) can be used.

[0038] On the other hand, a conductive material and a binder can be mixed into the positive electrode active material, and a filler can also be added as needed.

[0039] The conductive material is usually added in an amount of 1 wt % to 50 wt % based on the total weight of the mixture including the positive electrode active material. Such a conductive material is not particularly limited as long as it is conductive without causing chemical changes in the battery, and examples thereof include graphite such as natural graphite and artificial graphite; carbon black such as carbon black, acetylene black, ketjen black, channel black, furnace black, lamp black, and thermal black; conductive fibers such as carbon fiber and metal fiber; metal powders such as carbon fluoride, aluminum, and nickel powder; conductive whiskers such as zinc oxide and potassium titanate; conductive metal oxides such as titanium oxide; and conductive materials such as polyphenylene derivatives.

[0040] The binder is a component that helps bind the positive electrode active material to the conductive material and to the current collector, and is typically added in an amount of 1 to 50% by weight based on the total weight of the mixture including the positive electrode active material 120. Examples of such binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene, polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene-butylene rubber, fluororubber, and various copolymers.

[0041] The negative electrode includes a negative electrode current collector and a negative electrode active material applied to the lower and upper surfaces of the negative electrode current collector.

[0042] The negative electrode current collector is generally manufactured to have a thickness of 3 μm to 500 μm. Such a negative electrode current collector is not particularly limited as long as it is conductive and does not cause chemical changes in the battery, and examples that can be used include copper, stainless steel, aluminum, nickel, titanium, baked carbon, copper stainless steel whose surface is treated with carbon, nickel, titanium, silver, etc., and aluminum cadmium alloys.

[0043] In addition, fine irregularities can be formed on the surface to strengthen the binding force of the negative electrode active material, and various forms such as films, sheets, foils, nets, porous bodies, foams, non-woven bodies, etc. can be used.

[0044] Examples of the negative electrode active material include carbon such as non-graphitizable carbon and graphite-based carbon; Li x Fe2O3(0≦x≦1), Li x WO2(0≦x≦1), Sn x Me 1-x Me’ y O z (Me: Mn, Fe, Pb, Ge; Me’: Al, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen; 0 < x ≦ 1; 1 ≦ y ≦ 3; 1 ≦ z ≦ 8) and other metal composite oxides; lithium metal; lithium alloys; silicon-based alloys; tin-based alloys; metal oxides such as SnO, SnO2, PbO, PbO2, Pb2O3, Pb3O4, Sb2O3, Sb2O4, Sb2O5, GeO, GeO2, Bi2O3, Bi2O4, Bi2O5; conductive polymers such as polyacetylene; Li-Co-Ni-based materials; Si-based materials that are Si, SiO, SiO2 alone or mixtures thereof, etc. can be used, but are not limited thereto.

[0045] Of course, a conductive material and a binder can be additionally mixed into the negative electrode active material and coated on the negative electrode current collector.

[0046] The conductive material is a component for further improving the conductivity of the negative electrode active material, and carbon blacks such as acetylene black, ketjen black, channel black, furnace black, lamp black, thermal black; conductive fibers such as carbon fibers and metal fibers; metal powders such as carbon fluoride, aluminum, nickel powder; conductive whiskers such as zinc oxide and potassium titanate; conductive metal oxides such as titanium oxide; conductive materials such as polyphenylene derivatives, etc. can be used in a certain ratio.

[0047] The binder is a component that helps bind the negative electrode active material and the conductive material, etc., and to the current collector, and may include at least one selected from the group consisting of styrene butadiene rubber (SBR), acrylonitrile butadiene rubber, acrylic rubber, butyl rubber, fluoro rubber, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinyl alcohol (PVA), polyacrylic acid (PAA), polyethylene glycol (PEG), polyacrylonitrile (PAN), and polyacryl amide (PAM).

[0048] The separator prevents short circuits between the cathode and the cathode and allows only the movement of lithium ions. The separator may be made of any one of polyethylene, polypropylene, a polyethylene / polypropylene double layer, a polyethylene / polypropylene / polyethylene triple layer, a polypropylene / polyethylene / polypropylene triple layer, and organic fiber filter paper, but is not limited thereto.

[0049] The cap assembly is positioned on top of the electrode assembly, electrically connected to the positive electrode tab of the electrode assembly, and coupled to the upper open end of the battery case to seal the electrode assembly housed inside the battery case.

[0050] Specifically, the cap assembly is formed by stacking a current interrupting member, a current interrupting gasket, a safety vent, a PTC element, and a top cap in this order from the bottom up, and crimping gaskets are positioned on the outer edges of the current interrupting member and the top cap.

[0051] The current interrupt member, also called a current interrupt device (CID), is located on the top of the electrode assembly, and a positive electrode tab is connected to a predetermined position on the bottom surface.

[0052] A safety vent having one or more first notches and a central portion protruding downward is located on the top of the current interrupting member. The safety vent interrupts current and releases gas when the internal pressure of the battery case increases, and is positioned so that one side contacts the PTC element and the edge surface of the edge contacts the crimping gasket.

[0053] A current interruption gasket is positioned so as to maintain the current interruption member and the safety vent in an electrically insulated state, except for the downwardly protruding portions of the current interruption member and the safety vent.

[0054] The battery case accommodates the electrode assembly and the cap assembly, and the negative electrode tab extends downward and is connected to the bottom of the battery case so that the bottom of the battery case body acts as the negative electrode.

[0055] As described above, the cylindrical battery case has a crimping portion at the top end that surrounds and seals the outer surface of the cap assembly, and a beading portion that recesses inward below the crimping portion, thereby firmly fixing the electrode assembly and cap assembly and protecting them from external impacts.

[0056] Next, the first frame 200 is intended to protect the cylindrical battery cell 100 from external impacts, and may have a hexahedral shape, with a receiving hole 210 formed therein to receive and surround a portion of the cylindrical battery cell 100.

[0057] When the cylindrical battery cell 100 is accommodated in the accommodation hole 210 , the first frame 200 may have a height that can accommodate approximately half of the cylindrical battery cell 100 .

[0058] The second frame 300 is intended to protect the portion of the cylindrical battery cell 100 that is not housed in the first frame 200 from external impacts, and has a hexahedral shape with one side open, and a hole 310 that penetrates the second frame 300 may be formed on the other side.

[0059] Here, the first frame 200 and the second frame 300 may have a structure in which they are fastened and fixed in close contact with each other using bolts, but the fastening method is not particularly limited as long as the first frame 200 and the second frame 300 can be fixed in close contact with each other.

[0060] The thermal conduction pad 400 is located inside the surface of the second frame 300 where the hole 310 is formed, and may have a rectangular sheet shape.

[0061] The thermal conduction pad 400 has an accommodation hole (hole portion) 410 formed at a position corresponding to the cylindrical battery cell 100, which can accommodate a portion of the cylindrical battery cell 100, and the accommodation hole (hole portion) 410 can increase the contact surface area between the thermal conduction pad 400 and the cylindrical battery cell 100, thereby improving thermal conduction efficiency.

[0062] The thermal conduction pad 400 is made of a material having thermal conductivity and electrical insulation properties, and is not particularly limited as long as it is made of a material having excellent thermal conductivity and electrical insulation properties, including, for example, a silicon material.

[0063] The receiving frame 500 has a hexahedral shape with one side open, and can form a space with a certain volume, and can include a heat generating solution 510, an actuating part 520, and a heat conducting part 530.

[0064] The exothermic solution 510 can be contained in a space formed in the containment frame 500 and can be a supersaturated solution.

[0065] An example of a supersaturated solution is an aqueous solution of sodium acetate, which undergoes a phase change and releases heat when subjected to an impact.

[0066] In addition, after the phase change is completed while dissipating heat, if heat is applied, the phase change can be restored to a supersaturated solution state, which is advantageous in that it can be recycled.

[0067] The actuating part 520 is formed on one side of the receiving frame 500 and includes a vertical part 521 , a recessed part 522 , a pressing member 523 , an action control part 524 and a switch cap part 525 .

[0068] The vertical portion 521 extends inside the storage frame 500 to form a space.

[0069] The recessed portion 522 is located at the end of the extended vertical portion 521 and may be formed in a recessed shape toward the space formed by the vertical portion 521 .

[0070] Here, the vertical portion 521 and the recessed portion 522 may be made of an elastic material.

[0071] The pressing member 523 may be positioned in the space of the vertical portion 521 , and may have a rod shape, one side of which is in close contact with the recessed portion 522 and the other side of which is protruding outward from the receiving frame 500 .

[0072] The operation control unit 524 may be configured to surround the side of the pressing member 523 protruding outward from the receiving frame 500 , and may be positioned such that one side is in close contact with the receiving frame 500 .

[0073] The operation control section 524 can fix the pressing member 523 to restrict its movement or release the fixed state to allow the pressing member 523 to move, depending on the signal it receives.

[0074] For example, the operation control section 524 may have a gripper shape surrounding the pressing member 523, and is not particularly limited as long as it has a structure that can fix the movement of the pressing member 523 and release the fixed state.

[0075] The switch cap portion 525 may include a side portion surrounding the pressing member 523 and the operation control portion 524 exposed to the outside of the receiving frame 500, and an upper portion connected to one side of the side portion by a hinge or the like.

[0076] The upper surface of the switch cap portion 525 is in close contact with the pressing member 523 , so that when the upper surface is pressed, the pressing force can be transmitted to the pressing member 523 .

[0077] Here, the method of connecting the side surface portion and the top surface portion of the switch cap portion 525 is not particularly limited as long as the method is such that when the side surface portion and the top surface portion of the switch cap portion 525 are pressed while connected to each other, pressure is transmitted to the pressing member 523 to move the pressing member 523.

[0078] The heat conducting part 530 is for transferring heat generated when the heat generating solution 510 changes phase to the cylindrical battery cell 100 , and may include a contact part 531 and an extension pin part 532 .

[0079] The contact portion 531 is for transferring heat generated when the heat generating solution 510 changes phase to the cylindrical battery cell 100, and can be positioned to be in close contact with the thermal conduction pad 400 exposed through the hole 310 of the second frame 300.

[0080] The adhesive portion 531 may have a thin sheet shape and may be formed so that its horizontal cross section corresponds to the hole 310 . It is preferable that the area of ​​the adhesive portion 531 is equal to or smaller than the area of ​​the hole 310 .

[0081] This is because, if the area of ​​the contact portion 531 is formed to be larger than the area of ​​the hole 310, the contact portion 531 and the thermal conduction pad 400 may not be properly attached to each other.

[0082] The extension pin portion 532 may extend from one side of the contact portion 531 toward the space portion of the receiving frame 500, and may have a shape of a plurality of thin pins.

[0083] As described above, the extension pin portion 532 has a plurality of thin pin-shaped portions, which has the advantage of increasing the contact area per unit volume with the heat-generating solution 510 and improving the heat exchange efficiency.

[0084] Next, the display unit 600 is provided on the outer surface of the accommodating frame 500, and if necessary, can be formed into a structure in which a portion of it is accommodated in the accommodating frame 500, and the display unit 600 can be equipped with a battery management system (BMS).

[0085] The display unit 600 may display whether the battery module needs to be heated and whether the operating unit 520 needs to be operated. For example, the display unit 600 may be a display that can display text, and may further include a connecting unit 610 and a temperature sensor unit 620.

[0086] The connection unit 610 connects the display unit 600 and the operation control unit 524 so that an electrical signal can be transmitted between them, and the operation control unit 524 can control the movement of the pressing member 523 .

[0087] The temperature sensor unit 620 extends from the display unit 600 and measures the temperature of the heat generating solution 510 contained within the receiving frame 500, providing a measurement value that is taken into consideration when displaying on the display unit 600 whether or not the operating unit 520 needs to be operated.

[0088] For example, if the temperature of the cylindrical battery cell 100 is below a reference value and the temperature of the heat generating solution 510 detected by the temperature sensor 620 is high, the display unit 600 may display that the operation unit 520 does not need to be operated.

[0089] Here, the reference value may be 5° C., which is the minimum temperature at which charging can be performed, and more preferably 15° C., which is the minimum temperature at which smooth charging can be performed.

[0090] Furthermore, the display unit 600 can display that the operating unit 520 needs to be activated when the temperature of the cylindrical battery cell 100 is below a reference value and the temperature of the heat generating solution 510 detected by the temperature sensor unit 620 is low.

[0091] FIG. 7 is a diagram showing the operating state of the operating unit according to the preferred embodiment of the present invention.

[0092] 2 to 6, when the operating unit 520 is operated, in FIG. 7(a), when the display unit 600 normally displays that operation is not required, the operation control unit 524 maintains the pressing member 523 in a fixed state.

[0093] If the temperature of the cylindrical battery cell 100 is measured to be below the reference value and the temperature of the heat generating solution 510 is low, the display unit 600 displays that operation is required. Here, the operation control unit 524 releases the fixed state of the pressing member 523, allowing the pressing member 523 to move.

[0094] Here, the switch cap portion 525 is pressed to cause the pressing member 523 to descend, which causes the recessed portion 522 to expand and generate an impact, causing the heat generating solution 510 to undergo a phase change and generate heat.

[0095] In FIG. 7(c), after the pressure applied to the switch cap portion 525 is released, the vertical portion 521 and the indented portion 522 return to their positions before being pressed due to their elasticity, thereby applying an additional elastic shock to the heat generating solution 510 and causing a phase change in the heat generating solution 510.

[0096] Those skilled in the art will be able to make various applications and modifications within the scope of the present invention based on the above content. [Explanation of symbols]

[0097] 100 cylindrical battery cells 200 1st frame 210 Containment Hall 300 2nd frame 310 holes 400 Thermal Conduction Pad 410 Hole 500 capacity frame 510 Heat generating solution 520 Operating unit 521 Vertical section 522 Bay 523 Pressing member 524 Motion control section 525 Switch cap part 530 Heat Conduction Section 531 Adhesion part 532 Extension pin part 600 Display 610 Connection section 620 Temperature sensor part

Claims

1. a plurality of cylindrical battery cells; a first frame having a receiving hole formed therein for receiving the plurality of cylindrical battery cells; a second frame having a plurality of holes cut out by a predetermined area on one side thereof and coupled to the first frame; a thermal conduction pad positioned inside the second frame so as to cover the holes; a storage frame having a space for storing a heat generating solution and an actuation part for activating the heat generating solution; Including, The battery module includes a heat conducting portion for heat conduction inside the housing frame.

2. The battery module according to claim 1 , wherein the thermal conduction pad has a hole formed in a position corresponding to the cylindrical battery cell, the hole being capable of accommodating a part of the cylindrical battery cell.

3. The battery module according to claim 2 , wherein the plurality of holes are formed at positions corresponding to the apertures.

4. The actuation unit is a vertical portion extending inward of the storage frame to form a certain space; an indented portion located at an end of the vertical portion and indented toward the space portion of the vertical portion; a rod-shaped pressing member having one side in close contact with the recessed portion and the other side protruding outward from the accommodation frame; The battery module of claim 1 , comprising:

5. The battery module according to claim 4 , wherein the pressing member has an operation control unit at an outwardly protruding portion thereof, the operation control unit being capable of controlling the movement of the pressing member.

6. The battery module according to claim 4 , further comprising a switch cap portion surrounding the outwardly protruding portion of the pressing member.

7. The battery module of claim 2 , wherein one side of the thermal conductive part is positioned to be in close contact with the thermal conductive pad through the plurality of holes.

8. The heat conduction portion is a contact portion that comes into close contact with the thermal conduction pad; a plurality of extension pin portions extending from the contact portion toward the inside of the accommodation frame; The battery module of claim 7 , comprising:

9. The battery module according to claim 8 , wherein a thermally conductive adhesive material is applied between the thermally conductive pad and the contact portion.

10. The battery module according to claim 5 , further comprising an indicator on an outer surface of the housing frame, the indicator indicating whether or not the operating unit needs to be operated.

11. The battery module according to claim 10 , wherein the display unit comprises a battery management system (BMS).

12. the battery management system (BMS) is connected to the operation control unit via a connection unit; The battery module according to claim 11 , wherein the battery module is connected to a temperature sensor unit built into the internal space of the accommodation frame.

13. The battery module according to claim 1 , wherein the exothermic solution is a supersaturated solution.

14. The battery module according to claim 13 , wherein the supersaturated solution is a supersaturated aqueous sodium acetate solution.

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