TWI463724B - Heat-conduction structure - Google Patents

Description

Thermal structure

The present invention relates to a thermally conductive structure, and more particularly to a thermally conductive structure suitable for use in a battery module.

Lithium batteries are widely used in various fields such as 3C products, large-scale machines, and transportation vehicles because of their high energy density, high output power, stable discharge, and repeated charge and discharge. In general, users need to design suitable battery modules to improve product reliability in terms of battery arrangement, battery quantity, battery voltage balance, and battery temperature balance.

However, as the number of batteries required for the product and the operation time increase, the temperature in the battery module is more likely to be uneven. In addition, as the capacity of the battery module increases, the voltage inside the battery module is more likely to be unbalanced during pumping and discharging, which leads to a decrease in the life and reliability of the battery module.

The present invention provides a thermally conductive structure that can be combined with a plurality of batteries of a battery module to increase the uniformity of temperature and voltage in the battery module. The present invention provides a thermally conductive structure that can be combined with a plurality of batteries of a battery module. The heat conducting structure comprises at least one heat conducting sheet set, and the heat conducting sheet group has a plurality of heat conducting sheets, each of the heat conducting sheets comprising a bottom plate. The bottom plate has a plurality of through holes. The heat conductive sheets are stacked on each other, and the respective through holes on the heat conductive sheet correspond to each other and form a plurality of channels. Each battery will be inserted in one of the channels. Each of the heat conductive sheets of the heat conductive sheet group may further include a plurality of elastic structures connected to the bottom plate, and the elastic structures are disposed on the through holes, and each of the batteries inserted in the channels is adapted to the elastic structure.

The present invention provides a thermally conductive structure that can be used in conjunction with a plurality of batteries of a battery module. The heat conducting structure comprises at least one heat conducting sheet group, and the heat conducting sheet group is formed by stacking a plurality of heat conducting sheets. The heat conducting sheet has a bottom plate and a pair of side plates connected to the bottom plate, and the bottom plate has a plurality of through holes. When the heat conducting sheets are stacked to form a heat conducting sheet group, the plurality of through holes may correspondingly form a passage so that the battery can be inserted therein. The side plates are connected to form a plane so that the heat of the battery module can be dissipated by heat conduction. In addition, the sides of the bottom plate that are not connected to the side plates are stacked to form a hollow structure, so that the heat of the battery module can be dissipated by heat convection.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

1, 1', 1" ‧ ‧ heat conduction structure

10‧‧‧ Thermal film set

110, 110', 110" ‧ ‧ thermal sheet

120‧‧‧ channel

112‧‧‧floor

114‧‧‧ side panels

115‧‧‧Clamping structure

114’, 114”‧‧‧ Snap plate

116‧‧‧Flexible structure

118‧‧‧ hollow structure

12‧‧‧Insulated thermal pad

14‧‧‧heat conducting plate

2‧‧‧Battery module

20‧‧‧Battery

201‧‧‧ positive

202‧‧‧negative

22, 22’‧‧‧ Shell

22a, 22a’‧‧‧ first housing

222a, 222a’‧‧‧ first opening

22b, 22b’‧‧‧ second housing

222b, 222b’‧‧‧ second opening

24‧‧‧Insulation sheet

242‧‧‧Opening

S1‧‧‧ first plane

S2‧‧‧ second plane

L1‧‧‧ first side

L2‧‧‧ second side

H‧‧‧through hole

w‧‧‧Width

1 is a perspective exploded view showing the heat conducting structure of the first embodiment of the present invention in combination with a battery.

1A is a perspective view of a thermally conductive sheet set according to a first embodiment of the present invention.

2 is a perspective exploded view showing the heat conducting structure of the second embodiment of the present invention in combination with a battery.

3 is a perspective exploded view showing the heat conducting structure of the third embodiment of the present invention in combination with a battery.

4 is a perspective view of a thermally conductive sheet according to a fourth embodiment of the present invention.

Figure 5 is a perspective view of a thermally conductive sheet according to a fifth embodiment of the present invention.

1 is a perspective exploded view showing the heat conducting structure 1 of the first embodiment of the present invention in combination with the battery 20. 1A is a perspective view of a thermally conductive sheet set 10 according to a first embodiment of the present invention. Referring to FIG. 1 and FIG. 1A , the heat conducting structure 1 is used to combine with the plurality of batteries 20 of the battery module 2 . The heat conducting structure 1 includes at least one heat conducting sheet group 10. In FIG. 1, the number of the heat conducting sheet groups 10 is two, but the invention is not limited thereto. In FIG. 1A, the thermal conductive sheet set 10 has a plurality of thermal conductive sheets 110, and each of the thermal conductive sheets 110 further includes a bottom plate 112, at least one side plate 114, and a plurality of elastic structures 116.

In detail, as shown in FIG. 1A, the bottom plate 112 has a first plane S1, a second plane S2 with respect to the first plane S1, a pair of first side edges L1 parallel to each other, and a pair of second parallel sides. Side L2 and a through hole h. In addition, in the embodiment, the heat conducting structure 1 is utilized The through hole h is combined with the battery 20, so the number of the through holes h may be greater than or equal to the number of the batteries 20. That is, the number of through holes h on each of the thermally conductive sheets 110 depends on the number of the batteries 20. The arrangement of the through holes h on the heat conducting sheet 110 is also changed according to different requirements. The present invention does not limit the number and arrangement of the through holes h on the heat conducting sheet 110. For example, in the present embodiment, each of the heat transfer sheets 110 has six through holes h, and the arrangement of the through holes h is a matrix of two by three. However, the present invention does not limit the number of through holes h and the arrangement thereof.

In the above, the side plate 114 is an elongated structure and has a width w, and one side of the side plate 114 is connected to the second side L2 of the bottom plate 112, and the side plate 114 protrudes from the second plane of the bottom plate 112. S2. The plurality of elastic structures 116 connect the second plane S2 of the bottom plate 112 and protrude the second plane S2. Further, the elastic structure 116 surrounds the through hole h of the bottom plate 112. As shown in FIG. 1A, the number of the elastic structures 116 around each of the through holes h is four, but the present invention does not limit the number of the elastic structures 116. In addition, the width of the elastic structure 116 may be less than or equal to the width w of the side plate 114. In general, since the side panel 114 has a width w and the side panel 114 is substantially perpendicular to the bottom panel 112, and the elastic structure 116 has a width less than or equal to w, the overall thickness of the thermally conductive sheet 110 may be equal to the width w. In the present embodiment, the thermally conductive sheet 110 may be manufactured by press forming. However, the present invention does not limit the method of manufacturing the thermally conductive sheet 110.

It should be noted that, as shown in FIG. 1A, in the present embodiment, the side plate 114 and the elastic structure 116 may protrude from the second plane S2 of the bottom plate 112. In other embodiments, however, the side panels 114 and the resilient structure 116 may protrude from different planes of the bottom panel 112, for example, the elastic sheet 116 may protrude from the second plane S2, and the side panels 114 may protrude from the first plane S1. The invention is not limited thereto.

Referring to FIG. 1A, in the embodiment, a plurality of heat conducting sheets 110 are stacked on each other to form a heat conducting sheet group 10, and each through hole h on the heat conducting sheet 110 corresponds to each other to form a plurality of channels 120. In detail, since the second side edge L2 of each of the heat conductive sheets 110 has the side plates 114, the side plates 114 have a width w. Therefore, in the thermally conductive sheet set 10 in which the thermally conductive sheets 110 are stacked, the pitch of the bottom plates 112 of the adjacent two thermally conductive sheets 110 is substantially equal to the width w of the side plates 114. In addition, since the side plates 114 are connected to the second side edge L2 of the bottom plate 112, when the heat conducting sheets 110 are stacked together, the side plates 114 are connected to form a flat surface. Since the first side edge L1 of the bottom plate 112 is not connected to the side plate 114, when the heat conductive sheets 110 are stacked together, the adjacent two first side edges L1 will A hollow structure 118 is formed (as shown in Figure 1A).

It should be noted that, in this embodiment, the thermal conductive sheet 110 may be a metal thermal conductive sheet, and may be, for example, gold, silver, copper, aluminum or tin. However, the present invention does not limit the material of the thermal conductive sheet 110. For example, in other embodiments, the thermal conductive sheet 110 may also be a non-metallic thermal conductive sheet. In addition, among the thermal conductive sheet groups 10, the materials of any two of the thermal conductive sheets 110 may be different from each other. For example, one of the heat conductive sheets 110 may be a non-metal heat conductive sheet, and the other heat conductive sheets 110 may be metal conductive sheets. This embodiment also does not limit the width w of the side plates 114 in the thermally conductive sheet 110. In each of the heat conductive sheet groups 10, the width w of the side plates 114 of any two of the heat conductive sheets 110 may also be different from each other.

In addition, each of the thermal conductive sheets 110 may further include at least one engaging structure 115. The engaging structure 115 is located on the side plate 114 and has a groove and a hook (not shown). The hook of one of the heat conducting sheets 110 of the heat conducting sheet group 10 can hook the grooves of the other heat conducting sheets 110. It is possible to join adjacent two pieces of the heat conductive sheets 110 without being easily separated. In other embodiments, in order to save material, each of the thermal conductive sheets 110 may selectively include the at least one card and structure 115; for example, only the thermal conductive sheets 110 arranged in an odd number of sheets have the engaging structure 115, and the hooks The length is extended to the adjacent one of the odd-numbered thermal conductive sheets 110 having the engaging structure 115, that is, the hook of the first thermal conductive sheet 110 can extend from the first conductive sheet 110 to the third sheet. The groove of the heat conducting sheet 110 is hooked to the groove of the third piece of the heat conducting sheet 110. Similarly, the hook of the third piece of the heat conducting sheet 110 can hook the groove of the fifth piece of the heat conducting sheet 110, and so on. The odd-numbered thermal conductive sheets 110 can be joined together, and the adjacent two thermal conductive sheets 110 are not easily separated. Similarly, the second piece of the heat conducting sheet 110 can also be joined to the fourth piece of the heat conducting sheet 110 through the extension of the hook, and the first piece of the heat conducting sheet 110 can also be joined to the fourth piece of the heat conducting sheet 110. The pitch at which the thermally conductive sheets 110 are joined is not limited.

It should be noted that, as shown in FIG. 1A, the number of the engaging structures 115 on each side plate 114 is two. However, the embodiment does not limit the number of the engaging structures 115. In other embodiments, the engaging structures 115 are included. The number can also be one or more than two. In addition, in FIG. 1A, the engaging structures 115 on the second side edges L2 are symmetrically arranged with each other. However, the embodiment does not limit the arrangement of the engaging structures 115. In other embodiments, the engaging structures 115 may also be Not arranged in a symmetrical manner.

Referring again to FIG. 1 , the heat conducting structure 1 is used to combine with the plurality of batteries 20 of the battery module 2 . The battery 20 can be inserted into the plurality of channels 120 stacked in the through holes h. The length of the channel 120 will be less than or equal to the length of the battery 20 such that the battery 20 can be placed just in the channel 120 or beyond the channel 120. In addition, the battery 20 will conform to the elastic structure 116, that is, the battery 20 can be tightly received in the channel 120 by the elastic structure 116. In addition, as shown in FIG. 1 , in the present embodiment, the number of the heat conductive sheet groups 10 is two, and the number of the through holes h in each of the heat conductive sheets 110 is six, and the arrangement of the through holes h is two by three. Matrix. That is to say, the number of the channels 120 is six, and the arrangement of the channels 120 is a matrix of two by three, which can accommodate six batteries 20, and the batteries 20 are arranged in a matrix of two by three.

According to the above, in the battery 20 installed in the same thermal conductive sheet group 10, the positive electrode 201 of any one of the batteries 20 is electrically connected to the positive electrode 201 of the other battery 20, and any one of the batteries 20 The negative electrode 202 is electrically connected to the negative electrode 202 of the other battery 20; that is, in the same thermal conductive sheet group 10, the batteries 20 are arranged in parallel. In the present embodiment, the adjacent thermally conductive sheet groups 10 are arranged in series. Therefore, in the present embodiment, the design of the battery 20 is 6 in parallel and 2 in series. In other embodiments, the battery 20 of the same thermal conductive sheet group 10 may be a charged can body (not shown) that is not covered with an insulating layer. Thus, when the battery 20 is received in the channel of the same thermal conductive sheet group 10 of conductive material. In the middle of 120, the negative electrodes 202 of the batteries 20 are also electrically connected to the negative electrodes 202 of the other battery 20, that is, the batteries 20 are arranged in parallel.

In addition, as shown in FIG. 1, in the present embodiment, the battery 20 is arranged in such a manner that in one of the thermal conductive sheet groups 10, all the positive electrodes 201 of the battery 20 will extend in the direction of the first plane S1 (see FIG. 1). In the middle right heat conduction sheet group 10), in the adjacent heat conduction sheet group 10, the anode 202 of all the electrodes 20 will extend in the direction of the first plane S1 (such as the heat conduction sheet group 10 on the left side in FIG. 1). However, the number, series-parallel, and arrangement of the batteries 20 are designed according to the needs of the user, and the present invention is not limited thereto.

Referring to FIG. 1, the battery module 2 further includes a plurality of pairs of insulating sheets 24 (in the present embodiment, only two pairs are shown), and each of the heat conducting sheet groups 10 is located between the pair of insulating sheets 24. The insulating sheets 24 respectively cover the first plane S1 of one of the heat conducting sheets 110 in the heat conducting sheet group 10 and the second plane S2 of the other heat conducting sheet 110. In other words, one of the insulating sheets 24 covers the thermal conductive sheet group 10 The first plane S1 of the uppermost heat conducting sheet 110 is in the middle, and the other insulating sheet 24 covers the second plane S2 of the lowermost heat conducting sheet 110 in the heat conducting sheet group 10.

In addition, the insulating sheet 24 has a plurality of openings 242 therein. The openings 242 on the insulating sheet 24 only expose the positive electrode 201 and the negative electrode 202 of the battery 20 inserted in the heat conducting structure 1. The battery 20 is connected in series to the outside. The insulating sheet 24 can avoid the electrical connection between the parallel batteries 20 in actual application, which affects the performance and reliability of the battery module 2. However, in other embodiments, the battery module 2 may not include an insulating sheet, and the invention is not limited thereto.

In addition, the battery module 2 may further include a casing 22 that encloses the heat conductive sheet group 10, the battery 20, and the insulating sheet 24 in the casing to insulate the heat conductive sheet group 10, the battery 20, and the insulation. The sheets 24 are integrated into one body and expose the first side edge L1 of each of the heat conductive sheets 110 in the heat conductive sheet group 10. For example, as shown in FIG. 1, in the present embodiment, the outer casing 22 may further include a first casing 22a and a second casing 22b. The first housing 22a will have the insulating sheet 24, the battery 20, and the thermal conductive sheet group 10 from the direction of the first plane S1 in the thermal conductive sheet group 10, and the second housing 22b from the second plane S2 in the thermal conductive sheet group 10. Wrapped in it. Further, the first case 22a and the second case 22b may be joined together by, for example, a screw.

In addition, the first housing 22a further includes a pair of first openings 222a, and the second housing 22b further includes a pair of second openings 222b. When the first housing 22a and the second housing 22b are joined together, the first opening 222a and the second opening 222b expose the first side edges L1 of all the thermal conductive sheets 110 (as shown in FIG. 1). Since the first side edge L1 is not connected to the side plate 114, there is a hollow structure 118 between the adjacent two first side edges L1. That is, the first opening 222a and the second opening 222b may expose the hollow structure 118.

In general, when the battery module is operated, the internal temperature distribution of the overall battery module is uneven due to the arrangement of the batteries. In addition, the battery module may have a voltage imbalance during pumping and discharging. In this embodiment, since the heat conductive sheet group 10 accommodating the battery 20 is stacked with a plurality of heat conductive sheets 110, a large heat dissipation area of the battery 20 can be provided. Preferably, the thermal conductive sheet 110 used in the thermal conductive sheet set 10 may be a metal thermal conductive sheet to provide a better heat dissipation effect of the battery 20, thereby uniformizing the temperature inside the battery module 2.

In addition, since the outer casing 22 of the battery module 2 will form between two adjacent first side edges L1 The hollow structure 118 is exposed. Therefore, the battery module 2 can use the hollow structure 118 as a channel for fluid convection, and heat the battery module 2 by means of air cooling or liquid cooling, so that the battery module 2 is The internal temperature is uniformized and a good heat dissipation effect is achieved. In addition, depending on the use case, the battery module 2 may also operate at a low temperature. At this time, the thermal conductive sheet group 10 can play the role of conducting heat to the battery 20. That is to say, the thermal conductive sheet group 10 is a good conductor for conducting heat, and the heat generated by the battery 20 can be excluded according to the operating conditions of the user, or the thermal energy of the battery 20 can be provided to facilitate the operation of the battery module 2.

In addition, in the embodiment, the material of the heat conductive sheet 110 is a metal heat conductive sheet. Since the metal has good electrical conductivity, the voltage balance can be achieved during pumping and discharging. However, in other embodiments, the material of the thermal conductive sheet 110 may also be a non-metallic thermal conductive sheet. The material of any two of the thermal conductive sheets 10 may be different from each other, and may include, for example, a copper thermal conductive sheet, an aluminum thermal conductive sheet, or a non-metallic thermal conductive sheet. The user can adjust according to the actual heat dissipation or voltage balance requirements.

In addition, the battery 20 may be a charged can body or an insulated can body. If the battery 20 is a charged can body, the elastic structure 116 can make the battery 20 tightly fit to the channel 120, and the thermal pad 110 can balance the voltage in addition to the battery module 2. When the battery 20 is an insulated can body, the elastic structure 116 can prevent the battery 20 from being scratched when the battery 20 is installed, in addition to being able to fit the battery 20 into the channel 120.

Fig. 2 is a perspective exploded view showing the heat conducting structure 1' of the second embodiment of the present invention in combination with the battery 20. Unlike the thermally conductive structure 1 of the previous embodiment, the thermally conductive structure 1' of the present embodiment further includes an insulating thermally conductive sheet 12. Referring to FIG. 2, the insulating and thermally conductive sheet 12 is similar in structure to the heat conductive sheet 110. It also has a bottom plate, a pair of side plates facing each other, and a plurality of elastic structures (not shown). However, unlike the thermal conductive sheet 110, the insulating and thermally conductive sheet 12 can be used to connect and fix the adjacent two thermal conductive sheet groups 10, so that the adjacent two thermal conductive sheet groups 10 are electrically insulated from each other to avoid the adjacent two thermal conductive sheet groups 10. The battery 20 is in electrical contact.

3 is a perspective exploded view of the thermally conductive structure 1 ′′ of the third embodiment of the present invention in combination with the battery 20. Referring to FIG. 3 , unlike the previous embodiment, in the present embodiment, the outer casing 22 of the battery module 2 ′ 'Exposure the second side L2 of the thermally conductive sheet 110 in the thermally conductive sheet set 10, and by a plurality of side panels 114 connected plane. For example, as shown in Fig. 3, in the present embodiment, the outer casing 22' may further include a first casing 22a' and a second casing 22b'. The first housing 22a' will have the insulating sheet 24, the battery 20, and the thermal conductive sheet from the direction of the first plane S1 in the thermal conductive sheet group 10, and the second housing 22b' will be from the second plane S2 in the thermal conductive sheet group 10. Group 10 is coated therein. Further, the first casing 22a' and the second casing 22b' may be joined together by, for example, a screw.

In addition, the first housing 22a' further includes a pair of first openings 222a', and the second housing 22b' further includes a pair of second openings 222b'. When the first housing 22a' and the second housing 22b' are joined together, the first opening 222a' and the second opening 222b' expose the second side edge L2 of all of the thermally conductive sheets 110. The side plates 114 connected to the second side edge L2 are stacked together to form a plane. That is, the first opening 222a' and the second opening 222b' expose a plane formed by the plurality of side plates 114.

In detail, since the outer casing 22' of the battery module 2' exposes a plane formed by a plurality of side plates 114, the planes of the side plates 114 are connected to each other for heat exchange, thereby utilizing air cooling or The liquid cooling method heats the battery module 2' to uniformize the temperature inside the battery module 2' and achieve a good heat dissipation effect. For example, in the embodiment, the heat dissipation structure 1 ′′ may further include two heat conducting plates 14 (in FIG. 3 , the number of the heat conducting plates 14 is two, but the invention is not limited thereto). The housing 22' is attached to and/or contacts a plane formed by the side plates 114. The user can use a cooling system such as a water-cooled plate (not shown) to help the battery module 2' dissipate heat to achieve temperature uniformity. Effect.

In addition to this, depending on the use case, the battery module 2' may also be operated at a low temperature. At this time, the thermal conductive sheet group 10 can play the role of conducting heat to the battery 20. That is, the thermally conductive sheet group 10 is a good conductor for conducting heat, and the heat generated by the battery 20 can be excluded according to the operating conditions of the user, or the heat of the battery 20 can be supplied to facilitate the operation of the battery module 2'.

Fig. 4 is a perspective view showing a thermally conductive sheet 110' according to a fourth embodiment of the present invention. Referring to FIG. 4, different from the thermal conductive sheet 110 of the first embodiment, in the embodiment, the thermal conductive sheet 110' includes a plurality of snap plates 114', which can be used to replace the side panels of the previous embodiment. 114. In detail, one side of the snap plate 114' is connected to the second side L2 of the bottom plate 112, and the snap plate 114' is only connected Connect the second side of the portion L2. That is, the second side edge L2 is only partially connected to the snap plate 114'. In addition, the snap plate 114' further has a recess and a hook (not shown) such that the hook of a thermally conductive sheet 110' can engage the recess of the other thermally conductive sheet 110'. It is possible to join adjacent two heat conducting sheets 110' together without being easily separated.

It should be noted that, as shown in FIG. 4, the number of the latching plates 114' on each of the second side edges L2 is two, but the embodiment does not limit the number of the latching plates 114'. In other embodiments, The number of the snap plates 114' may also be one or more than two. In addition, the shackles 114 ′ of the second side edges L2 are arranged symmetrically with each other. However, the embodiment does not limit the arrangement of the shackles 114 ′. In other embodiments, the shackles 114 ′ may not Arranged in a symmetrical manner. The other structures of the thermally conductive sheet 110' of this embodiment are the same as those of the first embodiment, and will not be further described herein.

Fig. 5 is a perspective view showing a heat conducting sheet 110" according to a fifth embodiment of the present invention. Referring to Fig. 5, similar to the previous embodiment, the heat conducting sheet 110" also has a plurality of snap plates 114". The plate 114" also has a recess and a hook for combining with the other conductive sheets 110. However, unlike the snap plate 114' of the fourth embodiment, in the present embodiment, the snap plate 114" One side of the side is connected to the first side edge L1, and the snap plate 114" is only connected to the first side edge L1 of the portion. That is, the first side edge L1 is only partially connected to the snap plate 114".

It should be noted that, as shown in FIG. 5, the number of the snap plates 114" on each of the first side edges L1 is two, but in other embodiments, the number of the snap plates 114" may be one or Is greater than two. In addition, the snap plates 114" located on the two first side edges L1 are symmetrically arranged with each other, but in other embodiments, the snap plates 114" may not be arranged in a symmetrical manner. In addition, in other embodiments, the shackle plate 114 ′′ can also be located at the first side edge L1 and the second side edge L2 at the same time, which is not limited thereto. The first embodiment is the same, and will not be described here.

In summary, the present invention provides a thermally conductive structure that can be used in conjunction with a plurality of batteries of a battery module. The heat conducting structure comprises at least one heat conducting sheet group, and the heat conducting sheet group is formed by stacking a plurality of heat conducting sheets. The heat conducting sheet has a bottom plate and a pair of side plates connected to the bottom plate, and the bottom plate has a plurality of through holes. When the heat conducting sheets are stacked to form a heat conducting sheet group, the plurality of through holes may correspondingly form a passage so that the battery can be inserted therein. The side plates are connected to form a plane to make the heat of the battery module It can be dissipated by heat conduction. In addition, the sides of the bottom plate that are not connected to the side plates are stacked to form a hollow structure, so that the heat of the battery module can be dissipated by heat convection.

The above is only an embodiment of the present invention, and is not intended to limit the scope of the invention. It is still within the scope of patent protection of the present invention to make any substitutions and modifications of the modifications made by those skilled in the art without departing from the spirit and scope of the invention.

1‧‧‧thermal structure

10‧‧‧ Thermal film set

120‧‧‧ channel

2‧‧‧Battery module

20‧‧‧Battery

201‧‧‧ positive

202‧‧‧negative

22‧‧‧ Shell

22a‧‧‧First housing

222a‧‧‧first opening

22b‧‧‧second housing

222b‧‧‧ second opening

24‧‧‧Insulation sheet

242‧‧‧Opening

Claims (16)

A heat conducting structure, combined with a plurality of batteries of a battery module, comprising: at least one heat conducting sheet group having a plurality of heat conducting sheets, wherein each of the heat conducting sheets comprises a bottom plate, and the bottom plate has a plurality of through holes, wherein The bottom plate further has a first plane, a second plane opposite to the first plane, a pair of mutually parallel first side edges, and a pair of mutually parallel second side edges; wherein the heat conducting sheets are stacked on each other, and Each of the through holes on the heat conducting sheets correspond to each other and form a plurality of channels, and each of the batteries is inserted in the channels. The thermally conductive structure of claim 1, wherein each of the thermally conductive sheets of the thermal conductive sheet further comprises a plurality of elastic structures connected to the bottom plate and protruding the second plane, and the elastic structures are disposed on the The through holes, and each of the batteries inserted in the channels are attached to the elastic structures. The thermally conductive structure of claim 2, wherein each of the thermally conductive sheets further comprises: at least one pair of side plates facing each other, the pair of side plates respectively connecting the pair of second sides, and each pair The side plates respectively protrude from the first plane or the second plane of the heat conducting sheet, wherein at least one of the heat conducting sheets further comprises at least one pair of engaging structures, the pair of engaging structures are respectively located on the pair of side plates, and The plurality of thermally conductive sheets are snap-fitted. The heat conductive structure of claim 1, wherein the heat conductive sheet further comprises at least one pair of snap plates, and the pair of snap plates are respectively located at one of the pair of first sides or the pair of second sides. The heat conducting structure of claim 1, wherein the battery module further comprises a casing covering the heat conducting sheet group and exposing the pair of first side edges of the heat conducting sheets. The heat conducting structure of claim 3, wherein the battery module further comprises a casing covering the pair of second sides of the heat conducting sheet group and exposing the two of the heat conducting sheets The at least one pair of side plates between the adjacent thermally conductive sheets. The heat conductive structure of claim 2, wherein each of the heat conductive sheets further comprises: At least one pair of side plates facing each other, the pair of side plates respectively connecting the pair of second side edges, and each of the pair of side plates respectively protruding one of the first plane or the second plane of the heat conducting sheet, wherein at least two of the heat conducting sheets Further comprising at least one pair of engaging structures, the pair of engaging structures are respectively located on the pair of side plates of the heat conducting sheets, and are used for snapping the plurality of heat conducting sheets. The heat conducting structure of claim 3, wherein the engaging structure further comprises a groove and a hook. The thermally conductive structure of claim 1, wherein the at least one of the thermally conductive sheets is a metal thermally conductive sheet. The thermally conductive structure of claim 1, wherein the at least one of the thermally conductive sheets is a non-metallic thermally conductive sheet. The heat conducting structure as described in claim 1, 2, 3, 4, 5, 6 or 7 wherein the materials of the two heat conducting sheets are different from each other. The heat conducting structure according to claim 1, 2, 3, 4, 5, 6 or 7 wherein the widths of the side plates of the two heat conducting sheets are different from each other. The thermally conductive structure of claim 1, 2, 3, 4, 5, 6 or 7 wherein the height of the thermally conductive sheet set is less than or equal to the length of the batteries. The thermally conductive structure of claim 1, 2, 3, 4, 5, 6 or 7 wherein the number of the holes is greater than or equal to the number of the batteries. The thermally conductive structure of claim 1, 2, 3, 4, 5, 6 or 7 wherein the batteries comprise a charged can body or an insulated can body. The thermally conductive structure of claim 1, 2, 3, 4, 5, 6 or 7 wherein the thermally conductive sheets are manufactured by stamping.