JP2020193762A - Heat conduction apparatus - Google Patents

Abstract

To keep pushing between a wall and a wall opposite portion even when a heat conduction apparatus mediating heat conduction between a tube and the wall is deviated in a direction to make the wall escape from the heat conduction apparatus.SOLUTION: A heat conduction apparatus 20 mediating heat conduction between heat conduction walls BW1, BW2 and a cooling tube 12, includes wall opposite portions 211, 213, 221, 223 and tube opposite portions 212, 222. Each of the wall opposite portions 211, 213, 221, 223 is a plate-shaped member opposed to the heat conduction walls BW1, BW2 in a prescribed opposite direction and conducting heat to the heat conduction walls BW1, BW2. The tube opposite portions 212, 222 are plate-shaped members connected to the wall opposite portions 211, 213, 221, 223 in a thermally conductive state, recessed to the wall opposite portions 211, 213, 221, 223 in a direction separating from the heat conduction walls BW1, BW2 in the opposite direction, and performing heat conduction to the cooling tube 12 at the position recessed to the wall opposite portions 211, 213, 221, 223.SELECTED DRAWING: Figure 2

Description

The present invention relates to a heat transfer device.

Conventionally, as a heat transfer device that mediates heat conduction between a tube and a wall, the one described in Patent Document 1 is known. The heat transfer device described in Patent Document 1 is sandwiched between a tube which is an evaporation part of a thermosiphon and a side wall of a plurality of battery cells, and evaporates through heat conduction between the side wall and the tube. It is a heat diffusion plate. A heat conductive sheet material or grease is sandwiched between the heat of vaporization diffusion plate and the side walls of the plurality of battery cells.

International Publication No. 2019/077902

According to the inventor's examination, in order to improve the heat exchange between the heat transfer device and the wall, it is desirable that the wall and the heat transfer device press against each other. However, the surface of the heat transfer device, which is the heat transfer device in Patent Document 1, on the battery cell side is simply a flat surface. In such a case, when the heat transfer device is installed on the wall and the tube, or after the heat transfer device is installed, if the wall shifts in the direction of escape from the heat transfer device, the pressure between the wall and the heat transfer device is lost. .. As a result, the heat conduction between the wall and the wall facing portion becomes poor.

In view of the above points, the present invention allows the wall to escape from the heat transfer device when or after the heat transfer device that mediates heat conduction between the tubes is installed on the wall and the tube. Even in such a case, the purpose is to maintain the pressing between the wall and the wall facing portion.

The invention according to claim 1 for achieving the above object is a heat transfer device that mediates heat conduction between a wall (BW1, BW2) and a tube (12) extending along the wall. A plate-shaped wall facing portion (211) arranged at a position closer to the wall among the pipe and the wall and facing the wall in a predetermined facing direction and conducting heat conduction with the wall, and the wall facing portion. A plate-shaped tube facing the wall, which is dented with respect to the wall facing portion in a direction away from the wall in the facing direction, and conducts heat conduction with the tube at a position recessed with respect to the wall facing portion. It is a heat transfer device provided with a part (212).

In this way, since the pipe and the pipe facing portion that conducts heat are recessed with respect to the wall facing portion that conducts heat with the wall, the wall facing portion is pressed against the wall so that the wall facing portion bends. Can be done. By doing so, even if the heat transfer device is installed on the wall and the pipe, or after the heat transfer device is installed, even if the wall shifts in the direction of escaping from the wall facing portion, the wall facing the wall follows the deviation. By moving the part, the pressing between the wall and the wall facing part is maintained.

The reference reference numerals in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is a component development view of a battery cooling system. It is a perspective view of a heat transfer device and its surroundings. It is a front view of a heat transfer device and its surroundings. FIG. 3 is a sectional view taken along line IV-IV of FIG. It is a front view of the heat transfer apparatus and its surroundings which concerns on 2nd Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 3rd Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 4th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 5th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 6th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 7th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 8th Embodiment. It is a perspective view of the battery cooling system which concerns on 9th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 9th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 10th Embodiment. It is a perspective view of the repulsive material which concerns on 11th Embodiment. It is a perspective view of the repulsive material which concerns on 12th Embodiment. It is a perspective view of the repulsive material which concerns on 13th Embodiment. It is a perspective view of the repulsive material which concerns on 14th Embodiment. It is a perspective view of the repulsive material which concerns on 15th Embodiment. It is sectional drawing of the heat transfer apparatus and its surroundings which concerns on 15th Embodiment. It is sectional drawing of the heat transfer apparatus which concerns on 16th Embodiment and its surroundings. It is sectional drawing of the heat transfer apparatus which concerns on 17th Embodiment and its surroundings. It is sectional drawing of the heat transfer apparatus which concerns on 18th Embodiment and its surroundings. It is a perspective view of the battery cooling system which concerns on 19th Embodiment. It is a perspective view of the battery cooling system which concerns on 20th Embodiment. It is a front view of the heat transfer apparatus and its surroundings which concerns on 21st Embodiment.

(First Embodiment)
Hereinafter, the first embodiment will be described with reference to FIGS. 1, 2, 3, and 4. The battery cooling system according to this embodiment is mounted on a vehicle. As shown in FIGS. 1 and 2, this battery cooling system includes a thermosiphon 10, two sets of assembled batteries B1 and B2, and a heat transfer device 20. The assembled batteries B1 and B2 are the cooling targets of the thermosiphon 10. The heat transfer device 20 mediates heat conduction between the thermosiphon 10 and the assembled batteries B1 and B2. In FIG. 1, the shape of the heat transfer device 20 is shown in a simpler form than it actually is. Further, FIG. 1 shows a state in which the assembled batteries B1 and B2 are not assembled to the thermosiphon 10 and the heat transfer device 20. In the actual battery cooling system, the assembled batteries B1 and B2 are arranged so as to face and contact the heat transfer device 20 as shown by arrows Ae1 and Ae2, respectively.

This vehicle is an electric vehicle that can travel by a traveling electric motor (not shown) that uses the assembled batteries B1 and B2 as a power source. This electric vehicle may be an electric vehicle or a hybrid vehicle.

The arrows DR1, DR2, and DR3 in FIG. 1 indicate the orientation of the vehicle. That is, the arrow DR1 indicates the vehicle front-rear direction DR1, the arrow DR2 indicates the vehicle vertical direction DR2, and the arrow DR3 indicates the vehicle left-right direction DR3, that is, the vehicle width direction DR3.

As shown in FIG. 1, the thermosiphon 10 includes a sealed pipe 11, a working fluid (not shown) sealed in the pipe 11, and heat radiation fins 15. The pipe 11 has a cooling pipe 12, an intermediate pipe 13, and a heat radiating pipe 14.

The cooling pipe 12 is inclined with respect to the front-rear direction DR1 and the up-down direction DR2 along a plane parallel to the front-rear direction DR1 and the up-down direction DR2, and goes up and down from the lower end of the tube 11 toward the opposite end. It gradually rises and extends so as to be displaced upward from DR2. Further, the cooling pipe 12 extends along a plane parallel to the front-rear direction DR1 and the up-down direction DR2. The cooling pipe 12 mediates heat exchange between the working fluid of the liquid phase inside the cooling pipe 12 and the assembled batteries B1 and B2 by conducting heat conduction with the assembled batteries B1 and B2. As a result, the working fluid of the liquid phase inside the cooling pipe 12 is heated, and the assembled batteries B1 and B2 are cooled. However, the cooling pipe 12 and the assembled batteries B1 and B2 are not in direct contact with each other but are separated from each other, and heat conduction is realized via the heat transfer device 20. The working fluid may be, for example, a refrigerant such as R134a or R1234yf used in a vapor compression refrigeration cycle.

The intermediate pipe 13 is connected to the cooling pipe 12 at its lower end and to the heat radiating pipe 14 at its upper end. The intermediate pipe 13 communicates the cooling pipe 12 and the heat radiating pipe 14.

The heat radiating tube 14 is covered with the heat radiating fins 15, and heat is conducted with the objects around the heat radiating fins 15 (for example, the air inside the vehicle interior and the air outside the vehicle interior) through the heat radiating fins 15, so that the heat radiating pipe 14 It mediates the heat exchange between the working fluid of the gas phase inside and the surrounding objects. As a result, the working fluid of the liquid phase inside the heat radiating pipe 14 is cooled, and the objects around the heat radiating fin 15 are heated.

The assembled batteries B1 and B2 each have heat transfer walls BW1 and BW2 as a part of the surface of the assembled battery. The heat transfer wall BW1 is a wall that forms a surface of the assembled battery B1 on the cooling pipe 12 side. The heat transfer wall BW2 is a wall that forms a surface of the assembled battery B2 on the cooling pipe 12 side. The heat transfer wall BW2 corresponds to another wall. The heat transfer walls BW1 and BW2 extend along the front-rear direction DR1 and the up-down direction DR2. Therefore, the cooling pipe 12 extends along the heat transfer walls BW1 and BW2. Further, the cooling pipe 12 overlaps the heat transfer walls BW1 and BW2 in the left-right direction DR3.

Further, each of the assembled batteries B1 and B2 has a plurality of rectangular parallelepiped-shaped square battery cells BC as shown in FIG. The assembled batteries B1 and B2 are composed of a laminated body in which the plurality of battery cells BC are laminated and arranged. Therefore, both the assembled batteries B1 and B2 have a substantially rectangular parallelepiped shape as a whole. Each of these battery cells BC corresponds to the battery unit constituting the assembled battery.

Each of the plurality of battery cells BC belonging to the assembled battery B1 has small wall BWs forming a surface on the cooling pipe 12 side. That is, the plurality of battery cells BC belonging to the assembled battery B1 have a plurality of small wall BWs forming the same surface on the cooling pipe 12 side. These plurality of small wall BWs together constitute the heat transfer wall BW1. The same applies to the assembled battery B2. That is, the plurality of battery cells BC belonging to the assembled battery B2 have a plurality of small wall BWs forming the same surface on the cooling pipe 12 side. These plurality of small wall BWs together constitute the heat transfer wall BW2.

As shown in FIG. 3, in the battery cell BC belonging to the assembled battery B1, the wall opposite to the heat transfer wall BW1 is urged to the heat transfer device 20 side in the left-right direction DR3 by the positioning member 31. Further, in the battery cell BC belonging to the assembled battery B2, the wall opposite to the heat transfer wall BW2 is urged to the heat transfer device 20 side in the left-right direction DR3 by the positioning member 32.

The arrangement of the plurality of battery cells BC belonging to the assembled battery B1 is defined so that the heat transfer wall BW1 forms a flat surface. However, when actually arranged, a slight misalignment will inevitably occur. Therefore, as shown in FIG. 4, the positions of the plurality of small walls BWs constituting the heat transfer wall BW1 are deviated from each other in the width direction DR3. As a result, the heat transfer wall BW1 does not form a flat surface, and an uneven surface having a step in the arrangement direction of the battery cells BC is formed. That is, the heat transfer wall BW1 is formed with irregularities in the extending direction of the cooling pipe 12. The same applies to the plurality of battery cells BC belonging to the assembled battery B2. Therefore, in the same manner, the heat transfer wall BW2 does not form a flat surface, but forms an uneven surface having a step in the arrangement direction of the battery cells BC. That is, the heat transfer wall BW2 is formed with irregularities in the extending direction of the cooling pipe 12.

Here, the heat transfer device 20 will be described with reference to FIGS. 2, 3, and 4. FIG. 2 shows a state in which the assembled battery B1 is not attached to the thermosiphon 10 and the heat transfer device 20. In the actual battery cooling system, the assembled battery B1 is arranged so as to face and contact the heat transfer device 20 as shown by the arrow Ae1.

The heat transfer device 20 includes a first heat transfer unit 21, a second heat transfer unit 22, a repulsive material 23, and a repulsive material 24. The first heat transfer unit 21 is a single plate member that mediates heat conduction between the heat transfer wall BW1 and the cooling pipe 12. The second heat transfer unit 22 is a single plate member that mediates heat conduction between the heat transfer wall BW2 and the cooling pipe 12. The material of the first heat transfer portion 21 and the second heat transfer portion 22 is a metal having good thermal conductivity such as aluminum. The repulsive materials 23 and 24 exist in a compressed state between the first heat transfer section 21 and the second heat transfer section 22, and urge the first heat transfer section 21 toward the heat transfer wall BW1 and the second heat transfer member 23 and 24. 2 The heat transfer unit 22 is urged to the heat transfer wall BW2 side.

The first heat transfer portion 21 has a wall facing portion 211, a pipe facing portion 212, and a wall facing portion 213. The wall facing portion 211, the pipe facing portion 212, and the wall facing portion 213 are connected in this order from the top to the bottom of the first heat transfer portion 21.

The wall facing portion 211 is arranged on the upper side (that is, one side) of the pipe facing portion 212 in the vertical direction DR2, and the wall facing portion 213 is arranged on the lower side (that is, the other side). Here, the vertical DR2 corresponds to a orthogonal direction orthogonal to both the horizontal DR3 and the direction in which the pipe extends. One of the wall facing portion 211 and the wall facing portion 213 corresponds to the wall facing portion, and the other corresponds to the additional wall facing portion.

Each of the wall facing portions 211 and 213 is arranged at a position closer to the heat transfer wall BW1 among the cooling pipe 12 and the heat transfer wall BW1 and faces the heat transfer wall BW1 in a predetermined facing direction. It is a plate-shaped member that conducts heat. In this embodiment, the facing direction corresponds to the width direction DR3.

The pipe facing portion 212 is integrally connected to the wall facing portion 211 in a heat conductive manner at the upper end thereof, and is integrally connected to the wall facing portion 213 in a heat conductive manner at the lower end thereof. The pipe facing portion 212 is recessed with respect to the wall facing portions 211 and 213 in a direction away from the heat transfer wall BW1 in the facing direction DR3.

The pipe facing portion 212 has a shape corresponding to the shape of the cooling pipe 12 at a position recessed with respect to the wall facing portions 211 and 213, and heat is transferred to the cooling pipe 12 while facing the cooling pipe 12. Cover from the wall BW1 side. As a result, the pipe facing portion 212 conducts heat conduction with the cooling pipe 12 at the recessed positions with respect to the wall facing portion 211 and the wall facing portion 213. The pipe facing portion 212 and the cooling pipe 12 may be in contact with each other, or a heat grease (not shown) or a heat transfer sheet (not shown) may be interposed between the pipe facing portion 212 and the cooling pipe 12.

Comparing the portion of the tube facing portion 212 closest to the heat transfer wall BW1 and the portion of the wall facing portion 211 closest to the heat transfer wall BW1, the latter portion is closer to the heat transfer wall BW1. Further, when comparing the portion of the cooling pipe 12 closest to the heat transfer wall BW1 and the portion of the wall facing portion 211 closest to the heat transfer wall BW1, the latter portion is closer to the heat transfer wall BW1. These things also hold even if the wall facing portion 211 is replaced with the wall facing portion 213.

In this way, the wall facing portion 211 is connected to one side of the cooling pipe 12 and the wall facing portion 213 is connected to the other side of the pipe facing portion 212, and the pipe facing portion 212 is transmitted to the cooling pipe 12. It is arranged between the hot walls BW1. Therefore, the force that the heat transfer wall BW1 pushes against the wall facing portion 211 acts as a force that pushes BW1 at the wall facing portion 213 via the pipe facing portion 212. On the contrary, the force of the heat transfer wall BW1 pushing the wall facing portion 213 acts as a force pushing the heat transfer wall BW1 of the wall facing portion 211 via the tube facing portion 212. Therefore, the pressing of both the wall facing portions 211 and 213 and the heat transfer wall BW1 is reinforced. Further, since the cooling pipe 12 is urged from both sides of the cooling pipe 12 in the same direction, the position of the cooling pipe 12 is stabilized.

Here, the structure of the wall facing portion 211 will be described in more detail. As shown in FIGS. 2 and 3, the wall facing portion 211 is bent in a convex shape toward the heat transfer wall BW1 side. Specifically, the wall facing portion 211 extends from the end portion on the pipe facing portion 212 side so as to approach the heat transfer wall BW1 along the facing direction DR3. Further, the wall facing portion 211 extends upward along the vertical DR2 (that is, the direction away from the pipe facing portion 212) while being curved in an arch shape toward the heat transfer wall BW1. In this portion, the wall facing portion 211 comes into surface contact with the heat transfer wall BW1. Further, the wall facing portion 211 extends in a direction away from the heat transfer wall BW1 along the facing direction DR3. The same applies to the wall facing portion 213. That is, the wall facing portion 213 has the same shape as the wall facing portion 211, and is bent in a convex shape toward the heat transfer wall BW1 side.

As described above, the wall facing portions 211 and 213 are bent in a convex shape toward the heat transfer wall BW1 side as a whole, so that the wall facing portions 211 and 213 have a planar shape parallel to the heat transfer wall BW1 as compared with the case where the heat transfer wall BW1 is parallel to the heat transfer wall BW1. The rigidity for pushing the heat wall BW1 can be increased. Therefore, the pressing of the wall facing portions 211 and 213 and the heat transfer wall BW1 is further strengthened without the wall facing portions 211 and 213 escaping from the heat transfer wall BW1.

Further, as described above, the wall facing portions 211 and 213 have a portion extending upward along the direction away from the pipe facing portion 212 while being curved in an arch shape toward the heat transfer wall BW1. The contour of this portion on the heat transfer wall BW1 side in the cross section orthogonal to the extending direction of the cooling pipe 12 has an arch shape having a curvature that is convex toward the heat transfer wall BW1 side. This portion comes into contact with the heat transfer wall BW1 and presses against the heat transfer wall BW1. By doing so, the rigidity of the wall facing portions 211 and 213 is increased, and the pressing between the wall facing portions 211 and 213 and the heat transfer wall BW1 is further strengthened.

Further, as shown in FIGS. 2 and 4, a plurality of slits SL are formed in the wall facing portion 211. These plurality of slits SL are arranged in the front-rear direction DR1, that is, in the arrangement direction of the battery cells BC constituting the assembled battery B1. These slits SL separate the wall facing portion 211 in the extending direction of the cooling pipe 12. Therefore, the separating portions 211x, which are two portions of the wall facing portion 211 that are separated from each other with one or more slits SL in between, can be deformed independently of each other.

These slits SL are formed by one less than the number of the plurality of small wall BWs constituting the heat transfer wall BW1. The slits SL are open to face the two adjacent small wall BWs and the portion between them among the small wall BWs. For any of the two adjacent small wall BWs, one of the plurality of slits described above opens between the two small wall BWs and between them.

In this way, each of the slits SL is wider than the portion between the two opposing small wall BWs. Therefore, each of the separation portions 211x separated by the slit SL of the wall facing portions 211 faces only one BWs of the small wall BWs constituting the heat transfer wall BW1. Therefore, each of the separation portions 211x can follow the position of the facing small wall BWs in the facing direction DR3 without being greatly affected by the position of the small wall BWs other than the facing small wall BWs. That is, the wall facing portion 211 can satisfactorily absorb the deviation of these two adjacent small walls in the facing direction.

Similarly, a plurality of slits SL are formed in the wall facing portion 213, and the wall facing portion 213 has a plurality of separating portions separated by these slits SL. The features of the plurality of slit SLs and the plurality of separation portions are the same as those described for the plurality of slit SLs of the wall facing portion 211 and the separation portions 211x.

The second heat transfer portion 22 has a wall facing portion 221, a pipe facing portion 222, and a wall facing portion 223. From the top to the bottom of the second heat transfer portion 22, the wall facing portion 221, the pipe facing portion 222, and the wall facing portion 223 are connected in this order. Either of the wall facing portions 221 and 223 corresponds to another wall facing portion. Further, the pipe facing portion 222 corresponds to another pipe facing portion. The wall facing portion 221 is arranged on the upper side (that is, one side) of the pipe facing portion 222 in the vertical direction DR2, and the wall facing portion 223 is arranged on the lower side (that is, the other side).

Each of the wall facing portions 221, 223 is arranged at a position closer to the heat transfer wall BW2 among the cooling pipe 12 and the heat transfer wall BW2, and faces the heat transfer wall BW2 and the heat transfer wall BW2 in the opposite direction DR3. It is a plate-shaped member that conducts heat.

The pipe facing portion 222 is integrally connected to the wall facing portion 221 at the upper end thereof so as to be thermally conductive, and is integrally connected to the wall facing portion 223 so as to be thermally conductive at the lower end thereof. The pipe facing portion 222 is recessed with respect to the wall facing portions 221 and 223 in a direction away from the heat transfer wall BW2 in the facing direction DR3.

The pipe facing portion 222 has a shape corresponding to the shape of the cooling pipe 12 at a position recessed with respect to the wall facing portions 221, 223, and heat is transferred to the cooling pipe 12 while facing the cooling pipe 12. Cover from the wall BW2 side. As a result, the pipe facing portion 222 conducts heat conduction with the cooling pipe 12 at such a recessed position with respect to the wall facing portion 221 and the wall facing portion 223.

Comparing the portion of the tube facing portion 222 closest to the heat transfer wall BW2 and the portion of the wall facing portion 221 closest to the heat transfer wall BW2, the latter portion is closer to the heat transfer wall BW2. Further, when comparing the portion of the cooling pipe 12 closest to the heat transfer wall BW2 and the portion of the pipe facing portion 222 closest to the heat transfer wall BW2, the latter portion is closer to the heat transfer wall BW2. These things are also established even if the wall facing portion 221 is replaced with the wall facing portion 223.

Further, the force that the heat transfer wall BW2 pushes against the wall facing portion 221 acts as a force that pushes BW2 at the wall facing portion 223 via the pipe facing portion 222. On the contrary, the force of the heat transfer wall BW2 pushing the wall facing portion 223 acts as a force pushing the heat transfer wall BW2 of the wall facing portion 221 via the tube facing portion 222. Therefore, the pressing of both the wall facing portions 221 and 223 and the heat transfer wall BW2 is reinforced. Further, since the cooling pipe 12 is urged from both sides of the cooling pipe 12 in the same direction, the position of the cooling pipe 12 is stabilized.

Further, the wall facing portions 221 and 223 are bent in a convex shape toward the heat transfer wall BW2 side as a whole, so that the heat transfer wall has a plane shape parallel to the heat transfer wall BW2. The rigidity for pushing the BW2 can be increased. Therefore, the wall facing portions 221 and 223 do not escape from the heat transfer wall BW2, and the pressing between the wall facing portions 221 and 223 and the heat transfer wall BW2 is further strengthened.

For details of the features related to this feature, in the same description of the wall facing portions 221 and 223, the wall facing portion 211, the pipe facing portion 212, the wall facing portion 213, and the heat transfer wall BW1 are referred to as the wall facing portion 221 and the pipe facing portion 222. It is the same as the one replaced with the wall facing portion 223 and the assembled battery B2.

Further, the wall facing portions 221 and 223 have portions extending upward along the direction away from the pipe facing portion 222 while being curved in an arch shape toward the heat transfer wall BW2. The contour of this portion on the heat transfer wall BW1 side in the cross section orthogonal to the extending direction of the cooling pipe 12 has an arch shape having a curvature that is convex toward the heat transfer wall BW2 side. This portion comes into contact with the heat transfer wall BW2 and presses against the heat transfer wall BW2. By doing so, the pressing between the wall facing portions 221 and 223 and the heat transfer wall BW2 is further strengthened.

Further, similarly to the pipe facing portion 212 and the wall facing portion 213, a plurality of slit SLs are formed in the wall facing portions 221 and 223. The wall facing portions 213 and 223 have a plurality of separating portions separated by these slits SL. The features of the plurality of slit SLs and the plurality of separation portions are the same as those described for the plurality of slit SLs of the wall facing portion 211 and the separation portions 211x. However, in the description, the assembled battery B1 and the heat transfer wall BW1 are replaced with the assembled battery B2 and the heat transfer wall BW2.

Here, the relationship between the wall-facing portion 211 of the first heat transfer portion 21 and the wall-facing portion 221 of the second heat transfer portion 22 will be described. The wall facing portion 211 and the wall facing portion 221 are arranged on the upper side on the same side with respect to the cooling pipe 12, and face the facing direction DR3. Then, the wall-facing portion 211 and the wall-facing portion 221 first move away from each other while extending from the end on the cooling pipe 12 side. Further, the wall-facing portion 211 and the wall-facing portion 221 extend in a direction away from the cooling pipe 12 while being separated from each other and facing the DR3 in the opposite direction. Further, the wall facing portion 211 and the wall facing portion 221 are in contact with each other at the end portion far from the cooling pipe 12 in the DR3 facing direction as shown in FIGS. 2 and 3. Pushing is realized at this contact portion. That is, the end portion of the wall facing portion 211 pushes the end portion of the wall facing portion 221 toward the heat transfer wall BW2 side, and as a reaction, the end portion of the wall facing portion 221 pushes the end portion of the wall facing portion 211. Push to the heat transfer wall BW1 side. The relationship between the wall facing portion 213 and the wall facing portion 223 is also the same.

In this way, the wall-facing portion 211 and the wall-facing portion 221 come into contact with each other in the opposite direction DR3 at the end portion on the side far from the cooling pipe 12. Therefore, the wall facing portion 211 is urged from the wall facing portion 221 toward the heat transfer wall BW1 at its end. On the contrary, the wall facing portion 221 is urged from the wall facing portion 211 to the heat transfer wall BW2 side at its end. Therefore, the pressing between the wall facing portion 211 and the heat transfer wall BW1 is reinforced, and the pressing between the wall facing portion 221 and the heat transfer wall BW2 is also reinforced. The same effect can be obtained in the relationship between the wall facing portion 213 and the wall facing portion 223. That is, the pressing between the wall facing portion 213 and the heat transfer wall BW1 is reinforced, and the pressing between the wall facing portion 223 and the heat transfer wall BW2 is also reinforced.

Next, the repulsive materials 23 and 24 will be described. The repulsive material 23 is an elastic member such as urethane, elastomer, or spring, and is sandwiched between the wall facing portion 211 and the wall facing portion 221 in a state of being compressed in the facing direction DR3. As a result, the repulsive material 23 urges the wall facing portion 211 toward the heat transfer wall BW1 side and the wall facing portion 221 toward the heat transfer wall BW2 side by the repulsive force that is about to expand by itself. In this way, the repulsive material 23 further strengthens the pressing of the wall facing portion 211 and the heat transfer wall BW1 and the pressing of the wall facing portion 221 and the heat transfer wall BW2.

The repulsive material 24 is also an elastic member similar to the repulsive material 23, and is sandwiched between the wall facing portion 213 and the wall facing portion 223 in a compressed state. As a result, the repulsive material 24 urges the wall facing portion 213 toward the heat transfer wall BW1 side and the wall facing portion 223 toward the heat transfer wall BW2 side by the repulsive force that tries to expand by itself. In this way, the repulsive material 24 further strengthens the pressing of the wall facing portion 213 and the heat transfer wall BW1 and the pressing of the wall facing portion 223 and the heat transfer wall BW2.

Hereinafter, the operation of the battery cooling system having the above configuration will be described. When the cooling pipe 12 receives heat from the assembled batteries B1 and B2 by heat conduction mediated by the heat transfer device 20, the working fluid of the liquid phase in the cooling pipe 12 evaporates due to the heat of the received assembled batteries B1 and B2. As a result, the assembled batteries B1 and B2 are deprived of heat and cooled. The working fluid of the gas phase evaporated in the cooling pipe 12 rises in the pipe 11 and reaches the heat radiating pipe 14 from the intermediate pipe 13.

The gas phase working fluid that has reached the heat radiating pipe 14 radiates heat to the outside of the pipe 11 via the heat radiating fins 15 and condenses. The working fluid of the condensed liquid phase passes through the intermediate pipe 13 and flows down to the cooling pipe 12 by the action of gravity. By repeating the phase change between the liquid phase and the gas phase of the working fluid in the pipe 11 in this way, the assembled batteries P1 and B2 are cooled.

The heat conduction of the assembled batteries B1 and B2 and the working fluid via the cooling pipe 12 and the heat transfer device 20 at this time will be further described. As described above, the wall-facing portion 211 of the heat transfer device 20 reliably contacts the heat transfer wall BW1 of the assembled battery B1 on the surface. As described above, this is due to the convex shape of the wall facing portion 211 toward the heat transfer wall BW1, the pressing of the end portions of the wall facing portion 211 and the wall facing portion 221, the urging force of the repulsive material 23, and the like. This is because the pressing force between the 211 and the heat transfer wall BW1 is reinforced.

For the same reason, the wall facing portion 213 also reliably contacts the heat transfer wall BW1 of the assembled battery B1 on the surface. Further, the wall facing portions 221 and 223 also surely come into contact with the heat transfer wall BW2 of the assembled battery B2 on the surface for the same reason.

Further, as described above, due to the misalignment of the small wall BWs in the opposite direction DR3 during or after the installation of the battery cells constituting the assembled battery B1, as shown in FIG. 4, the cooling pipe is attached to the heat transfer wall BW1. Unevenness along 12 is generated in the form of a step. Even so, in the wall facing portion 211 of the heat transfer device 20, each of the separating portions 211x separated by the slit SL follows the position of the facing small wall BWs of the assembled battery B1 and reaches the small wall BWs. Reliable contact on the surface and in a wide range.

For the same reason, also in the wall facing portions 213, 221 and 223, each of the separated portions separated by the slit SL follows the position of the facing small wall BWs, and has a wide range in a plane with the small wall BWs. Make sure to contact.

At this time, the cooling pipe 12 and the pipe facing portion 212 do not interfere with the contact between the heat transfer wall BW1 and the wall facing portions 211 and 213. This is because, as described above, the cooling pipe 12 and the wall facing portions 211 and 213 are recessed in the direction away from the heat transfer wall BW1 with respect to the wall facing portion 211 and the wall facing portion 213. Is.

That is, the cooling pipe 12 and the pipe facing portion 212 are recessed with respect to the wall facing portions 211 and 213 that conduct heat with the heat transfer wall BW1 so that the wall facing portions 211 and 213 are flexed. It can be pressed against the heat wall BW1. That is, the wall facing portions 211 and 213 have a dimension absorbing structure that is not obstructed by the pipe facing portion 212. That is, dimension absorption is realized at a portion of the facing direction DR3 that is not related to the thickness of the cooling pipe 12.

Further, when the heat transfer device 20 is installed on the heat transfer wall BW1 and the cooling pipe 12, or after the heat transfer device 20 is installed, the heat transfer wall BW1 is displaced from the desired position in the direction of escaping from the wall facing portions 211 and 213. There is. Even in that case, as described above, the wall facing portions 211 and 213 move following the deviation, so that the heat transfer wall BW1 and the wall facing portions 211 and 213 are kept pressed against each other.

For the same reason, the cooling pipe 12 and the pipe facing portion 222 do not interfere with the contact between the heat transfer wall BW2 and the wall facing portions 221, 223, so that the heat transfer wall BW2 and the wall facing portions 221, 223 are pressed against each other. Be maintained. That is, the wall facing portions 221 and 223 have a dimension absorption structure that is not obstructed by the pipe facing portion 222.

In this way, the integrally formed first heat transfer unit 21 fulfills both the function of heat conduction and the function of pressing against the heat transfer wall BW1. In addition, the integrally formed second heat transfer unit 22 fulfills both a function of heat conduction and a function of pressing against the heat transfer wall BW2. Therefore, since it is not necessary to provide additional parts for pressing, the number of parts can be reduced in the battery cooling system.

At the same time, it is not necessary to add a large member for heat conduction between the cooling pipe 12 and the heat transfer walls BW1 and BW2. The cooling pipe 12 and the heat transfer device 20 overlap each other in a direction orthogonal to the extending direction of the cooling pipe 12 and the facing direction DR3. Therefore, it is possible to suppress an increase in the distance between the cooling pipe 12 and the heat transfer walls BW1 and BW2, and by extension, the physique of the battery cooling system can be suppressed.

A thermal grease or a heat transfer sheet for improving the heat conduction performance may be arranged between the wall facing portions 211 and 213 and the heat transfer wall BW1. Similarly, thermal grease or a heat transfer sheet for improving the heat conduction performance may be arranged between the wall facing portions 221 and 223 and the heat transfer wall BW2. Even in that case, the thickness of the thermal grease or the thickness of the heat transfer sheet in the facing direction DR3 can be minimized by the above-mentioned dimension absorption structure.

Further, since the contact between each small wall BWs of the heat transfer wall BW1 and the wall facing portions 211 and 213 is ensured, heat is conducted from each small wall BWs of the heat transfer wall BW1 to the wall facing portions 211 and 213. Well done. Further, since the contact between the small wall BWs of the heat transfer wall BW2 and the wall facing portions 221 and 223 is ensured, heat is conducted from the small wall BWs of the heat transfer wall BW2 to the wall facing portions 221 and 223. Well done.

The heat transferred from the heat transfer wall BW1 to the wall facing portions 211 and 213 is transferred from the wall facing portions 211 and 213 to the pipe facing portion 212 by heat conduction, and further transferred from the pipe facing portion 212 to the cooling pipe 12 by heat conduction. Further, the heat transferred from the heat transfer wall BW2 to the wall facing portions 221 and 223 is transferred from the wall facing portions 221 and 223 to the pipe facing portion 222 by heat conduction, and further from the pipe facing portion 222 to the cooling pipe 12 by heat conduction. It is transmitted. As described above, the heat transfer direction between the cooling pipe 12 and the first heat transfer unit 21 is approximately the vertical direction DR2, and the heat transfer direction between the first heat transfer unit 21 and the heat transfer wall BW1 is approximately the opposite direction DR3. Is. That is, the heat transfer direction between the cooling pipe 12 and the first heat transfer unit 21 and the heat transfer direction between the first heat transfer unit 21 and the heat transfer wall BW1 intersect and are substantially orthogonal to each other. ..

(Second Embodiment)
Next, the second embodiment will be described. In the battery cooling system of the present embodiment, the shapes of the first heat transfer unit 21 and the second heat transfer unit 22 are changed from those of the first embodiment. Specifically, as shown in FIG. 5, the wall-facing portion 211 of the first heat transfer portion 21 and the wall-facing portion 221 of the second heat transfer portion 22 come into contact with each other at the end portion on the side far from the cooling pipe 12. I'm away without. Further, the wall-facing portion 213 of the first heat transfer portion 21 and the wall-facing portion 223 of the second heat transfer portion 22 are separated from each other without contacting each other at the end portion on the side far from the cooling pipe 12.

In this case, the wall facing portion 211 may be urged from the wall facing portion 221 to the heat transfer wall BW1 side, or conversely, the wall facing portion 221 may be urged from the wall facing portion 211 to the heat transfer wall BW2 side. ,Absent. Further, in this case, the wall facing portion 211 is urged from the wall facing portion 221 to the heat transfer wall BW1 side, and conversely, the wall facing portion 221 is urged from the wall facing portion 211 to the heat transfer wall BW2 side. There is no such thing.

Even in this case, due to the presence of the repulsive materials 23 and 24, the wall facing portions 211 and 213 are urged to the heat transfer wall BW1 side, and the wall facing portions 221 and 223 are urged to the heat transfer wall BW2 side. Will be done. Further, the wall facing portions 211 and 213 have a portion extending upward along the direction away from the pipe facing portion 212 while being curved in an arch shape toward the heat transfer wall BW1. Further, the wall facing portions 221 and 223 have portions extending upward along the direction away from the pipe facing portion 212 while being curved in an arch shape toward the heat transfer wall BW2. By doing so, the pressing between the wall facing portions 211 and 213 and the heat transfer wall BW1 is strengthened, and the pressing between the wall facing portions 221 and 223 and the heat transfer wall BW2 is strengthened. The other features and the effects of those features are the same as in the first embodiment.

(Third Embodiment)
Next, the third embodiment will be described. In the battery cooling system of the present embodiment, as shown in FIG. 6, the repulsive materials 23 and 24 are eliminated with respect to the first embodiment. That is, the space between the wall facing portion 211 and the wall facing portion 221 is hollow, and the space between the wall facing portion 213 and the wall facing portion 223 is also hollow.

Even in such a case, the wall facing portions 211 and 213 have a portion extending upward along the direction away from the pipe facing portion 212 while being curved in an arch shape toward the heat transfer wall BW1. Further, the wall facing portions 221 and 223 have portions extending upward along the direction away from the pipe facing portion 212 while being curved in an arch shape toward the heat transfer wall BW2. Further, the wall-facing portion 211 of the first heat transfer portion 21 and the wall-facing portion 221 of the second heat transfer portion 22 are in contact with each other and pressed against each other at the end portion on the side far from the cooling pipe 12. Further, the wall-facing portion 213 of the first heat transfer portion 21 and the wall-facing portion 223 of the second heat transfer portion 22 are in contact with each other and pressed against each other at the end portion on the side far from the cooling pipe 12. By doing so, the pressing between the wall facing portions 211 and 213 and the heat transfer wall BW1 is strengthened, and the pressing between the wall facing portions 221 and 223 and the heat transfer wall BW2 is strengthened. The other features and the effects of those features are the same as in the first embodiment.

(Fourth Embodiment)
Next, the fourth embodiment will be described. In the battery cooling system of the present embodiment, the shapes of the first heat transfer unit 21 and the second heat transfer unit 22 are different from those of the second embodiment. Specifically, as shown in FIG. 7, in the first heat transfer unit 21, the portion facing the heat transfer wall BW1 is a plane orthogonal to the facing direction DR3. Further, in the second heat transfer unit 22, the portion facing the heat transfer wall BW2 is a plane orthogonal to the facing direction DR3. As a result, the enhancement of rigidity obtained by bending the first heat transfer portion 21 and the second heat transfer portion 22 cannot be obtained in the present embodiment.

Even in this case, due to the presence of the repulsive materials 23 and 24, the wall facing portions 211 and 213 are urged to the heat transfer wall BW1 side, and the wall facing portions 221 and 223 are urged to the heat transfer wall BW2 side. Will be done. Therefore, the pressing between the wall facing portions 211 and 213 and the heat transfer wall BW1 is strengthened, and the pressing between the wall facing portions 221 and 223 and the heat transfer wall BW2 is strengthened. Other features and the effects of those features are similar to those of the second embodiment.

(Fifth Embodiment)
Next, the fifth embodiment will be described. In the battery cooling system of the present embodiment, as shown in FIG. 8, the repulsive materials 23 and 24 are eliminated with respect to the fourth embodiment. That is, there is a gap between the wall facing portion 211 and the wall facing portion 221 and a gap between the wall facing portion 213 and the wall facing portion 223.

Even in this case, the tube facing portion 212 is recessed with respect to the wall facing portions 211 and 213 in a direction away from the heat transfer wall BW1 in the facing direction DR3, and is recessed with respect to the wall facing portions 211 and 213. It conducts heat with the cooling pipe 12. Further, the pipe facing portion 222 is recessed with respect to the wall facing portions 221 and 223 in a direction away from the heat transfer wall BW2 in the facing direction DR3, and heat conduction with the cooling pipe 12 at a position recessed with respect to the wall facing portions 221, 223. I do.

Therefore, the wall facing portions 211 and 213 can be pressed against the wall so that the wall facing portions 211 and 213 bend. This has a significant effect. That is, when the heat transfer device is installed on the heat transfer wall BW1 and the cooling pipe 12, or after the heat transfer device is installed, the heat transfer wall BW1 may shift in the direction of escaping from the wall facing portions 211 and 213. However, even in that case, the wall facing portions 211 and 213 move following the deviation, so that the heat transfer wall BW1 and the wall facing portions 211 and 213 are kept pressed against each other. The same applies to the wall facing portions 221, 223. The other features and the effects of those features are the same as in the fourth embodiment.

(Sixth Embodiment)
Next, the sixth embodiment will be described. As shown in FIG. 9, the battery cooling system of the present embodiment has different postures of the assembled batteries B1 and B2 and the heat transfer device 20 from the first embodiment. That is, the assembled batteries B1 and B2 of the present embodiment and the heat transfer device 20 are attached to the vehicle in a posture rotated by 90 ° about the cooling pipe 12 with respect to the battery cooling system of the first embodiment. Even in this case, the same features and effects as those of the first embodiment are exhibited. The facing direction in this embodiment is the vertical DR2.

(7th Embodiment)
Next, the seventh embodiment will be described. As shown in FIG. 10, the battery cooling system of the present embodiment has different postures of the assembled batteries B1 and B2 and the heat transfer device 20 from the first embodiment. That is, the posture in which the assembled batteries B1 and B2 of the present embodiment, the heat transfer device 20, and the battery cooling system of the first embodiment are rotated by a predetermined angle larger than 0 ° and smaller than 90 ° with respect to the cooling pipe 12 as an axis. And it is attached to the vehicle. Even in this case, the same features and effects as those of the first embodiment are exhibited. The facing direction in the present embodiment is a direction inclined in both the vertical direction DR2 and the horizontal direction DR3.

(8th Embodiment)
Next, the eighth embodiment will be described. In the battery cooling system of the present embodiment, as shown in FIG. 11, the assembled battery B1 and the second heat transfer unit 22 are eliminated from the first embodiment. Then, the repulsive materials 23 and 24 are pressed against the vehicle body in the opposite direction DR3.

In this case, since there is no second heat transfer portion 22, the wall facing portions 211 and 213 are not urged from the wall facing portions 221 and 223 toward the heat transfer wall BW1 side. Even in this case, the repulsive materials 23 and 24 are sandwiched between the vehicle body and the first heat transfer portion 21 and are in a compressed state. Therefore, the wall facing portions 211 and 213 are urged toward the heat transfer wall BW1 side. By doing so, the pressing between the wall facing portions 211 and 213 and the heat transfer wall BW1 is strengthened.
Further, as in the present embodiment, when there is no cooling target on the side of the first heat transfer unit 21 opposite to the assembled battery B1, the repulsive materials 23 and 24 have the first heat transfer so that the cold heat does not escape unnecessarily. It may be configured as a heat insulating material having a lower thermal conductivity than that of the portion 21. The other features and the effects of those features are the same as in the first embodiment.

(9th Embodiment)
Next, the ninth embodiment will be described with reference to FIGS. 12 and 13. In the battery cooling system of the present embodiment, the assembled battery B1 is abolished, the degree of inclination of the cooling pipe 12 is changed, and the configuration of the heat transfer device 20 is changed with respect to the first embodiment.

Specifically, as shown in FIG. 12, the cooling pipe 12 extends along a direction orthogonal to the vertical DR2, and more specifically, along the vehicle left-right direction DR3. The assembled battery B1 is arranged above the cooling pipe 12 in the vertical direction DR2.

Further, in the heat transfer device 20 of the present embodiment, the second heat transfer unit 22 is abolished with respect to the first embodiment. The first heat transfer unit 21 is arranged below the cooling pipe 12 in the vertical direction DR2 and below the assembled battery B1 in the vertical direction DR2. Therefore, the facing direction in this embodiment is the vertical DR2.

That is, the assembled battery B1 and the first heat transfer unit 21 of the present embodiment are attached to the vehicle in a posture rotated by 90 ° about the cooling pipe 12 with respect to the battery cooling system of the first embodiment. Even in this case, the same features and effects as those of the first embodiment are exhibited.

Further, the repulsive materials 23 and 24 are pressed against the vehicle body in the vertical direction DR2. In this case, since there is no second heat transfer portion 22, the wall facing portions 211 and 213 are not urged from the wall facing portions 221 and 223 toward the heat transfer wall BW1 side. Even in this case, the repulsive materials 23 and 24 are sandwiched between the vehicle body and the first heat transfer portion 21 and are in a compressed state. Therefore, the wall facing portions 211 and 213 are urged toward the heat transfer wall BW1 side. By doing so, the pressing between the wall facing portions 211 and 213 and the heat transfer wall BW1 is strengthened. The other features and the effects of those features are the same as in the first embodiment.

(10th Embodiment)
Next, the tenth embodiment will be described. In this embodiment, the configurations of the cooling pipe 12 and the heat transfer device 20 are different from those in the ninth embodiment. As shown in FIG. 14, the cooling pipe 12 of the present liquid is branched into two. The two cooling pipes 12 are arranged in a direction orthogonal to the vertical DR2, which is the opposite direction. Both of the two cooling pipes 12 communicate with the intermediate pipe 13. Therefore, both of the two cooling pipes 12 realize the same operation as the cooling pipe 12 of the ninth embodiment.

Further, the first heat transfer portion 21 of the present embodiment has a pipe facing portion 214 and a wall facing portion 215 in addition to the wall facing portion 211, the pipe facing portion 212, and the wall facing portion 213.

The pipe facing portion 214 is integrally connected to the counter pipe facing portion 212 side end portion of the wall facing portion 213 at one end thereof so as to be heat conductive. The pipe facing portion 214 is integrally connected to the wall facing portion 215 at the other end so as to be thermally conductive. The pipe facing portion 214 is recessed with respect to the wall facing portions 213 and 215 in a direction away from the heat transfer wall BW1 in the vertical direction DR2.

The pipe facing portion 214 has a shape corresponding to the shape of the cooling pipe 12 at a position recessed with respect to the wall facing portions 213 and 215, and heat is transferred to the cooling pipe 12 while facing the cooling pipe 12. Cover from the wall BW1 side. The cooling pipe 12 facing the pipe facing portion 214 and the cooling pipe 12 facing the pipe facing portion 212 are different from each other. As a result, the pipe facing portion 214 conducts heat conduction with the cooling pipe 12 at such a recessed position with respect to the wall facing portions 213 and 215. Other configurations of the pipe facing portion 214 are the same as those of the pipe facing portion 212.

The wall facing portion 215 has the same shape as the wall facing portion 211, and is bent in a convex shape toward the heat transfer wall BW1 side. Further, a slit is formed in the wall facing portion 215 in the same manner as the wall facing portions 211 and 213.

Therefore, the same effect as that of the ninth embodiment is achieved in this embodiment as well.

(11th Embodiment)
Next, the eleventh embodiment will be described. In this embodiment, the configuration of the repulsive material 23 is different from that in the first to tenth embodiments. Specifically, as shown in FIG. 15, the repulsive material 23 of the present embodiment has a plurality of springs 23y dispersedly attached to one surface of one plate 23x. These springs 23y are compressed and arranged in the facing direction at the same positions as in the first to tenth embodiments, and the wall facing portion 211 and the wall facing portion 221 if any are generated by a force that tries to spread in the facing direction. Bounce.

Even with such a configuration, the same effect as that of the first to tenth embodiments can be obtained. In this embodiment, the repulsive material 24 may also have the same configuration as the repulsive material 23.

(12th Embodiment)
Next, the twelfth embodiment will be described. In this embodiment, the configuration of the repulsive material 23 is different from that in the first to tenth embodiments. Specifically, as shown in FIG. 16, the repulsive material 23 of the present embodiment is a leaf spring member in which a plurality of irregularities are formed in a wavy shape in the opposite direction while extending in the extending direction of the cooling pipe 12. .. The leaf spring member is compressed and arranged in the opposite direction at the same positions as those in the first to tenth embodiments, and the wall facing portion 211 and the wall facing portion 221 if any are present due to the force that tries to spread in the facing direction. To urge.

Even with such a configuration, the same effect as that of the first to tenth embodiments can be obtained. In this embodiment, the repulsive material 24 may also have the same configuration as the repulsive material 23.

(13th Embodiment)
Next, the thirteenth embodiment will be described. In this embodiment, the configuration of the repulsive material 23 is different from that in the first to tenth embodiments. Specifically, as shown in FIG. 17, the repulsive material 23 of the present embodiment is made of the same material as that of the first to tenth embodiments, but a plurality of elliptical slits 23a are formed. , Different from the first to tenth embodiments. The repulsive material 23 is compressed and arranged in the opposite direction at the same positions as in the first to tenth embodiments, and due to a force that tries to spread in the opposite direction, the wall facing portion 211 and the wall facing portion 221 if any are present. To urge.

Here, these slits 23a will be described. A plurality of slits 23a are formed side by side in the extending direction of the cooling pipe 12 on the surface of the repulsive material 23 on the wall facing portion 211 side and the surface on the wall facing portion 221 side if any. The slit 23a formed on one surface has a one-to-one correspondence with the slit SL formed on the facing wall facing portion, and overlaps with the corresponding slit in the facing direction. Therefore, the plurality of portions of the wall facing portion 211 separated by the slit SL are urged to only one of the plurality of portions of the repulsive material 23 separated by the slit 23a. Therefore, a plurality of portions of the wall facing portion 211 that are separated from each other with the slit SL interposed therebetween can satisfactorily follow the misalignment of the corresponding small wall BWs. If there is a wall facing portion 221, the same applies to the wall facing portion 221.

Further, in the present embodiment, the same effect can be obtained from the same configuration as in the first to tenth embodiments. In this embodiment, the repulsive material 24 may also have the same configuration as the repulsive material 23.

(14th Embodiment)
Next, the 14th embodiment will be described. In the present embodiment, as shown in FIG. 18, the plurality of slits 23a are replaced with the plurality of slits 23b with respect to the thirteenth embodiment. The slit 23b of the present embodiment is formed linearly in a direction intersecting both the extending direction and the facing direction of the cooling pipe 12.

Further, in the repulsive material 23, a gap is formed between the surfaces facing each other in the slit 23b. That is, in the repulsive material 23, the surfaces facing each other in the slit 23b are separated from each other. Other features are the same as in the thirteenth embodiment.

(15th Embodiment)
Next, the fifteenth embodiment will be described with reference to FIGS. 19 and 20. In the present embodiment, as shown in FIGS. 19 and 20, the plurality of slits 23a are replaced with the plurality of slits SX with respect to the thirteenth embodiment. The slit SX of the present embodiment is formed linearly in a direction intersecting both the extending direction and the facing direction of the cooling pipe 12. The cross section shown in FIG. 20 is a cross section at a position equivalent to that in FIG.

Further, in the repulsive material 23, a gap is formed between the surfaces facing each other in the slit SX. That is, in the repulsive material 23, the surfaces facing each other in the slit SX are in contact with each other. Other features are the same as in the thirteenth embodiment.

(16th Embodiment)
Next, the 16th embodiment will be described. In this embodiment, the shapes of the wall facing portions 211 and 221 are changed from those of the fifteenth embodiment. In the present embodiment, the heat transfer device 20 has a first heat transfer unit 21 and a second heat transfer unit 22.

As shown in FIG. 21, each of the plurality of portions of the wall facing portions 211 and 221 divided by the slit SL is bent toward the repulsive material 23 at both ends in the extending direction of the cooling pipe 12. As a result, each of the plurality of portions of the wall facing portions 211 and 221 divided by the slit SL has a convex shape with respect to the assembled batteries B1 and B2, respectively, even in the cross section including the facing direction.

By doing so, the strength of the wall facing portions 211 and 221 with respect to the small wall BWs is increased, and as a result, the contact and heat conduction between the small wall BWs and the wall facing portions 211 and 221 are improved.

In addition, the modification as in this embodiment for the wall facing portions 211 and 221 may be applied to the wall facing portions 213 and 223. Further, the modification as in the present embodiment can be applied to the first to fourth embodiments.

(17th Embodiment)
Next, the 17th embodiment will be described. In this embodiment, the shapes of the wall facing portions 211 and 221 are changed from those of the fifteenth embodiment. In the present embodiment, the heat transfer device 20 has a first heat transfer unit 21 and a second heat transfer unit 22.

As shown in FIG. 22, each of the plurality of portions of the wall facing portions 211 and 221 divided by the slit SL has a convex shape toward the repulsive material 23 at the central portion in the extending direction of the cooling pipe 12.

By doing so, the strength of the wall facing portions 211 and 221 with respect to the small wall BWs is increased, and as a result, the contact and heat conduction between the small wall BWs and the wall facing portions 211 and 221 are improved.

In addition, the modification as in this embodiment for the wall facing portions 211 and 221 may be applied to the wall facing portions 213 and 223. Further, the modification as in the present embodiment can be applied to the first to fourth embodiments.

(18th Embodiment)
Next, the 18th embodiment will be described. In this embodiment, the shapes of the wall facing portions 211 and 221 are changed from those of the fifteenth embodiment. In the present embodiment, the heat transfer device 20 has a first heat transfer unit 21 and a second heat transfer unit 22.

As shown in FIG. 23, each of the plurality of portions of the wall facing portions 211 and 221 divided by the slit SL is bent toward the repulsive material 23 at both ends in the extending direction of the cooling pipe 12. Further, each of the plurality of portions of the wall facing portions 211 and 221 divided by the slit SL has a convex shape toward the repulsive material 23 at the central portion in the extending direction of the cooling pipe 12.

By doing so, the strength of the wall facing portions 211 and 221 with respect to the small wall BWs is increased, and as a result, the contact and heat conduction between the small wall BWs and the wall facing portions 211 and 221 are improved.

In addition, the modification as in this embodiment for the wall facing portions 211 and 221 may be applied to the wall facing portions 213 and 223. Further, the modification as in the present embodiment can be applied to the first to fourth embodiments.

(19th Embodiment)
Next, the 19th embodiment will be described. In this embodiment, the configuration of the tube 11 of the thermosiphon 10 is changed with respect to the first to eighteenth embodiments. Specifically, as shown in FIG. 24, the pipe 11 of the present embodiment is configured in an annular shape. As a result, the thermosiphon 10 of the present embodiment is a loop type thermosiphon.

Specifically, the pipe 11 has an additional pipe 16 in addition to the cooling pipe 12, the intermediate pipe 13, and the heat radiating pipe 14. One end of the additional pipe 16 is connected to the lower end of the intermediate pipe 13. The other end of the additional pipe 16 is connected to the end of the cooling pipe 12 opposite to the heat radiation pipe 14 side. As described above, since there is an additional pipe 16 that communicates with the intermediate pipe 13 at one end and communicates with the cooling pipe 12 at the other end, the working fluid is the cooling pipe 12, the heat radiation pipe 14, the intermediate pipe 13, and the additional pipe 16. In order, it can circulate in the pipe 11. The additional pipe 16 is located at a position separated from the heat transfer device 20 via air. Therefore, the additional pipe 16 does not exchange heat with the assembled batteries B1 and B2 by heat conduction via the heat transfer device 20 without passing through the cooling pipe 12.

Specifically, the working fluid circulates as follows. The working fluid of the liquid phase in the cooling pipe 12 evaporates due to the heat of the assembled batteries B1 and B2 received. The working fluid of the gas phase evaporated in the cooling pipe 12 rises in the pipe 11 and reaches the heat radiating pipe 14 from the intermediate pipe 13. The gas phase working fluid that has reached the heat radiating pipe 14 radiates heat to the outside of the pipe 11 via the heat radiating fins 15 and condenses. The working fluid of the condensed liquid phase passes through the additional pipe 16 and flows down to the cooling pipe 12 by the action of gravity. Other features and effects are similar to those of the first to eighteenth embodiments.

(20th Embodiment)
Next, the twentieth embodiment will be described. In this embodiment, the configuration of the tube 11 of the thermosiphon 10 is changed with respect to the first to eighteenth embodiments. Specifically, as shown in FIG. 25, the pipe 11 of the present embodiment is configured in an annular shape. As a result, the thermosiphon 10 of the present embodiment becomes a double-tube thermosiphon.

Specifically, the pipe 11 has an additional cooling pipe 17, an additional intermediate pipe 18, and a communication pipe 19 in addition to the cooling pipe 12, the intermediate pipe 13, and the heat radiating pipe 14. One end of the communication pipe 19 is connected to the opposite end of the intermediate pipe 13 in the cooling pipe 12, and the other end of the communication pipe 19 is connected to one end of the additional cooling pipe 17. The other end of the additional cooling pipe 17 is connected to the lower end of the additional intermediate pipe 18. The upper end of the additional intermediate pipe 18 is connected to the end of the heat radiating pipe 14 opposite to the intermediate pipe 13.

The additional cooling tube 17 is connected to the first heat transfer section 21 and the second heat transfer section 22 of the heat transfer device 20 in the same manner as the cooling tube 12, and is connected to the first heat transfer section 21 and the second heat transfer section 22. Heat transfer is performed with the assembled batteries B1 and B2 via the above.

Therefore, each of the first heat transfer section 21 and the second heat transfer section 22 in the heat transfer device 20 of the present embodiment has two tube facing portions as shown in the first heat transfer section 21 of FIG. Have. One of the two pipe facing portions conducts heat conduction with the cooling pipe 12 facing the cooling pipe 12, and the other one conducts heat conduction with the additional cooling pipe 17 facing the additional cooling pipe 17. Do. The communication pipe 19 and the additional intermediate pipe 18 are located apart from the heat transfer device 20 via air. Therefore, the communication pipe 19 and the additional intermediate pipe 18 do not exchange heat with the assembled batteries B1 and B2 via the heat transfer device 20 without the cooling pipe 12 or the additional cooling pipe 17 by heat conduction.

With such a configuration, the refrigerant repeats evaporation and condensation in the cooling pipe 12, the intermediate pipe 13, and the heat radiation pipe 14, and repeats evaporation and condensation in the additional cooling pipe 17, the additional intermediate pipe 18, and the heat radiation pipe 14.

Specifically, the working fluid behaves as follows. The working fluid of the liquid phase in the cooling pipe 12 evaporates due to the heat of the assembled batteries B1 and B2 received. The working fluid of the gas phase evaporated in the cooling pipe 12 rises in the pipe 11 and reaches the heat radiating pipe 14 from the intermediate pipe 13. The gas phase working fluid that has reached the heat radiating pipe 14 radiates heat to the outside of the pipe 11 via the heat radiating fins 15 and condenses. The working fluid of the condensed liquid phase passes through the intermediate pipe 13 and flows down to the cooling pipe 12 by the action of gravity.

Further, the working fluid of the liquid phase in the additional cooling pipe 17 evaporates due to the heat of the assembled batteries B1 and B2 received. The working fluid of the gas phase evaporated in the additional cooling pipe 17 rises in the pipe 11 and reaches the heat radiating pipe 14 from the additional intermediate pipe 18. The gas phase working fluid that has reached the heat radiating pipe 14 radiates heat to the outside of the pipe 11 via the heat radiating fins 15 and condenses. The working fluid of the condensed liquid phase passes through the additional intermediate pipe 18 and flows down to the additional cooling pipe 17 by the action of gravity. Other features and effects are similar to those of the first to eighteenth embodiments.

(21st Embodiment)
Next, the 21st embodiment will be described. In the battery cooling system of the present embodiment, the shapes and connection modes of the first heat transfer unit 21 and the second heat transfer unit 22 are changed from those of the first embodiment. Specifically, as shown in FIG. 26, the pipe facing portion 212 is integrally formed with the wall facing portion 211 and is connected to the wall facing portion 211, and the pipe facing portion 212a and the wall facing portion 213. By being integrally formed, it is separated into a pipe facing portion 212b that is connected to the wall facing portion 213.

Further, the pipe facing portion 222 is integrally formed with the wall facing portion 221 to be connected to the wall facing portion 221 and to be integrally formed with the wall facing portion 223 to form the wall facing portion 222. It is separated into a pipe facing portion 222b connected to 223.
One ends of the pipe facing portions 212a and 212b are connected to the cooling pipe 12 side ends of the wall facing portions 211 and 213, respectively. One end of each of the pipe facing portions 222a and 222b is connected to the cooling pipe 12 side end of the wall facing portions 221 and 223, respectively.

The other end of the pipe facing portion 212a and the other end of the pipe facing portion 222a are integrally connected to each other. Further, the other end of the pipe facing portion 212b and the other end of the pipe facing portion 222b are integrally connected to each other. Therefore, the wall facing portion 211, the pipe facing portion 212a, the pipe facing portion 222a, and the wall facing portion 221 are integrally formed as a whole. Further, the wall facing portion 213, the pipe facing portion 212b, the pipe facing portion 222b, and the wall facing portion 223 are integrally formed as a whole.

Then, the pipe facing portions 212a and 222a conduct heat conduction with the cooling pipe 12 from the wall facing portions 211 and 221 and the repulsive material 23 side (that is, the upper side) while covering the cooling pipe 12. Further, the pipe facing portions 212b and 222b conduct heat conduction with the cooling pipe 12 from the wall facing portions 213 and 223 and the repulsive material 24 side (that is, the lower side) while covering the cooling pipe 12. The pipe facing portions 211a, 211b, 221a, 22b may be in contact with the cooling pipe 12, or a heat grease (not shown) or a heat transfer sheet (not shown) may be interposed between them.

Even if this is the case, the same effect can be achieved from the same configuration as in the first embodiment. The modification of the present embodiment with respect to the first embodiment may be similarly applied to the second to twentieth embodiments.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be appropriately modified. Further, the above-described embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above embodiments, the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential and when it is clearly considered to be essential in principle. Further, in each of the above embodiments, when numerical values such as the number, numerical values, amounts, and ranges of the constituent elements of the embodiment are mentioned, when it is clearly stated that they are particularly essential, and in principle, the number is clearly limited to a specific number. It is not limited to the specific number except when it is done. Further, in the above embodiment, when it is described that the external environment information of the vehicle (for example, the humidity outside the vehicle) is acquired from the sensor, the sensor is abolished and the external environment information is received from the server or the cloud outside the vehicle. It is also possible to do. Alternatively, it is possible to abolish the sensor, acquire related information related to the external environment information from a server or cloud outside the vehicle, and estimate the external environment information from the acquired related information. In particular, when a plurality of values are exemplified for a certain quantity, it is also possible to adopt a value between the plurality of values unless otherwise specified or when it is clearly impossible in principle. .. In addition, in each of the above embodiments, when referring to the shape, positional relationship, etc. of a component or the like, the shape, unless otherwise specified or limited in principle to a specific shape, positional relationship, etc. It is not limited to the positional relationship. In addition, the present invention also allows the following modifications and equivalent range modifications for each of the above embodiments. In addition, the following modified examples can be independently selected to be applied or not applied to the above embodiment. That is, any combination of the following modifications can be applied to the above embodiment.

The controls and methods thereof described in the present disclosure are realized by a dedicated computer provided by configuring a processor and memory programmed to perform one or more functions embodied by a computer program. May be done. Alternatively, the controls and methods thereof described in the present disclosure may be implemented by a dedicated computer provided by configuring the processor with one or more dedicated hardware logic circuits. Alternatively, the control unit and method thereof described in the present disclosure may be a combination of a processor and memory programmed to perform one or more functions and a processor composed of one or more hardware logic circuits. It may be realized by one or more dedicated computers configured. Further, the computer program may be stored in a computer-readable non-transitional tangible recording medium as an instruction executed by the computer.

(Modification example 1)
In each of the above embodiments, the cooling pipe 12 is used for cooling the assembled batteries B1 and B2. However, this does not necessarily have to be the case. For example, the cooling pipe 12 may be used for cooling a heating element other than a battery. In that case, the heat transfer walls BW1 and BW2 are walls on the cooling pipe 12 side of the heating element. In this case, the heating element may have a step formed in the extending direction of the cooling pipe 12. As a heating element in which such a step is formed, for example, there is a group of heating elements on a substrate.

Further, the cooling pipe 12 may be a pipe used for heating an object instead of cooling it. In that case, the heat transfer walls BW1 and BW2 are the walls on the cooling pipe 12 side of the object to be heated. In this case, the object to be heated may have a step formed in the extending direction of the pipe.

(Modification 2)
In each of the above embodiments, the pipe facing portion 212 covers the cooling pipe 12 between the cooling pipe 12 and the heat transfer wall BW1, but covers the cooling pipe 12 from the opposite side of the heat transfer wall BW1 with respect to the cooling pipe 12. You may be. The same applies to the pipe facing portion 222.

(Modification 3)
In each of the above embodiments, slit SL is formed in the wall facing portions 211, 213, 221 and 223. However, even if slits are not formed in the wall facing portions 211, 213, 221 and 223, it is possible to deal with the unevenness of the heat transfer walls BW1 and BW2.

(Modification example 4)
In each of the above embodiments, the wall facing portion 211 and the wall facing portion 213 are connected to both sides of the pipe facing portion 212. However, this does not necessarily have to be the case. For example, the wall facing portion 213 may be abolished and only the wall facing portion 211 may be connected to one side of the pipe facing portion 212. The same applies to the pipe facing portion 222.

(Modification 5)
In each of the above embodiments, the cooling pipe 12 is a pipe constituting a thermosiphon. Here, the thermosiphon is a form of heat pipe. A heat pipe is a heat transfer element that has a container and a working fluid enclosed inside the container and transfers heat by evaporation and condensation of the working fluid. In the heat pipe, the force for returning the condensed hydraulic fluid to the cooling pipe includes capillary force due to the wick, gravity, and centrifugal force. Of these, the heat pipe that uses gravity is the thermosiphon. However, the cooling pipe 12 may be a pipe constituting a heat pipe other than the thermosiphon. Further, the cooling pipe 12 may be a pipe (for example, an evaporator tube) that constitutes a heat transfer element (for example, a vapor compression refrigeration cycle) other than the heat pipe.

(Modification 6)
Each of the assembled batteries B1 and B2 of each of the above embodiments is composed of a plurality of square battery cells BC. However, each of the assembled batteries B1 and B2 may be composed of a plurality of rectangular cases in which a battery module is enclosed. In that case, the surface of the rectangular case on the heat transfer device 20 side corresponds to the small walls BWs.

(Modification 7)
In each of the above embodiments, the thermosiphon 10, the heat transfer device 20, and the assembled batteries B1 and B2 are mounted on the vehicle. However, these do not have to be mounted on the vehicle.

(Modification 8)
Not only the repulsive material but also the cold storage agent may be arranged at the positions where the repulsive materials 23 and 24 in each of the above embodiments are arranged. By doing so, it is possible to mitigate the influence of the temperature fluctuation on the thermosiphon 10 side without increasing the physique of the heat transfer device 20.

(Modification 9)
In each of the above embodiments, the wall facing portions 211 and 213 are composed of ribs erected in a direction away from the assembled battery B1 with a heat runner for transferring heat from a position close to the pipe facing portion 212 to a position far from the pipe facing portion 212. You may be. The same applies to the wall facing portions 221, 223.

(Modification example 10)
In the above embodiment, the battery cell BC has a square shape, but may have a non-square shape (for example, a round shape). Even in that case, the wall facing portion may have a shape (for example, a shape other than a flat plate) that follows the shape of the heat transfer wall of the battery cell BC.

(Summary)
According to the first aspect shown in part or all of each of the above embodiments, the heat transfer device that mediates the heat conduction between the wall and the tube extending along the wall is the tube and the wall. Of these, a plate-shaped wall-facing portion that is arranged closer to the wall and faces the wall in a predetermined facing direction and conducts heat with the wall is connected to the wall-facing portion so that heat can be conducted. It is provided with a plate-shaped tube facing portion that is recessed with respect to the wall facing portion in a direction away from the wall in the facing direction and conducts heat conduction with the tube at a position recessed with respect to the wall facing portion.

In this way, since the pipe and the pipe facing portion that conducts heat are recessed with respect to the wall facing portion that conducts heat with the wall, the wall facing portion is pressed against the wall so that the wall facing portion bends. Can be done. By doing so, even if the heat transfer device is installed on the wall and the pipe, or after the heat transfer device is installed, even if the wall shifts in the direction of escaping from the wall facing portion, the wall facing the wall follows the deviation. By moving the part, the pressing between the wall and the wall facing part is maintained.

Further, according to the second aspect, the wall is formed with irregularities in the extending direction of the pipe, and the wall facing portion is formed with a slit for separating the wall facing portion in the extending direction of the pipe. ing.

According to the inventor's examination, the wall that conducts heat with the tube may have irregularities formed in the direction in which the tube extends. For example, unevenness may be present on each of the side walls of the plurality of battery cells of Patent Document 1, or unevenness may occur as a whole of the plurality of side walls due to the positional deviation between the side walls. In such a case, as in Patent Document 1, if the surface of the heat of vaporization diffusion plate on the battery cell side is simply a flat surface, the range in which heat conduction between the heat of vaporization diffusion plate and the plurality of side walls is good is narrow. turn into.

On the other hand, in the present disclosure, a slit is formed to separate the wall facing portion in the extending direction of the pipe. By doing so, the wall facing portion is separated in the direction in which the pipe extends by the slit, so that each of the separated portions of the wall facing portion is located at the position of the facing portion of the wall. Can follow. Therefore, even if the wall is formed with irregularities in the extending direction of the pipe, the pressing between the wall and the wall facing portion is maintained in a wide range.

Further, according to a third aspect, the wall includes a plurality of small walls, and the plurality of small walls are walls on the tube side of a plurality of battery units constituting the assembled battery, and the plurality of small walls are formed. Since the positions of the walls in the opposite direction are deviated from each other, the unevenness of the wall is formed in the direction in which the pipe extends.

As a result, even if the plurality of battery units constituting the assembled battery are misaligned and the plurality of small walls are uneven in the direction in which the tube extends as a whole due to this, the unevenness thereof. Is absorbed. That is, since the wall facing portion is separated in the extending direction of the pipe by the slit, each of the separated portions of the wall facing portion can follow the unevenness.

Further, according to the fourth aspect, the slit is opened so as to face between two adjacent small walls and the two small walls among the plurality of small walls. In this way, the wall facing portion can satisfactorily absorb the deviation of these two adjacent small walls in the facing direction.

Further, according to the fifth aspect, the heat transfer device includes an elastic member that urges the wall facing portion toward the wall side. In this way, the elastic member further strengthens the pressing between the wall facing portion and the wall.

Further, according to the sixth aspect, the wall facing portion has a portion extending in a direction away from the pipe facing portion while being curved toward the wall. In this way, the rigidity for pushing the wall can be increased. Therefore, the pressing between the wall facing portion and the wall is further strengthened.

Further, according to the seventh aspect, the separate wall arranged on the side opposite to the wall across the pipe and the pipe arranged at a position closer to the separate wall, and facing the separate wall. The plate-shaped separate wall facing portion that faces the separate wall and conducts heat with the separate wall is connected to the separate wall facing portion so as to be heat conductive, and the separate wall facing portion is oriented away from the separate wall in the facing direction. It is provided with a plate-shaped separate pipe facing portion that conducts heat conduction with the pipe at a position recessed with respect to the separate wall facing portion, and the wall facing portion and the separate wall facing portion are separated from each other. They extend in a direction away from the pipe while facing each other in the opposite direction, and are in contact with each other in the opposite direction at the end portion on the side far from the pipe.

In this way, the wall facing portion and the separate wall facing portion extend in the direction away from the pipe, and then come into contact with each other in the facing direction at the end portion on the side far from the pipe. Therefore, the wall facing portion is urged toward the wall side from the separate wall facing portion at its end. On the contrary, the separate wall facing portion is urged from the wall facing portion to the separate wall side at its end. Therefore, the pressing between the wall facing portion and the wall is reinforced, and the pressing between the other wall facing portion and the other wall is also reinforced.

Further, according to the eighth aspect, the heat transfer device is arranged at a position closer to the wall of the tube and the wall, and conducts heat conduction with the wall so as to face the wall in the opposite direction. A plate-shaped additional wall facing portion is provided, and the pipe facing portion is thermally conductively connected to the additional wall facing portion, and is recessed with respect to the additional wall facing portion in a direction away from the wall in the facing direction. It conducts heat with the pipe at a recessed position with respect to the additional wall facing portion, faces the pipe between the pipe and the wall, and is orthogonal to the facing direction and orthogonal to the extending direction of the pipe. The wall facing portion is arranged on one side of the pipe in the direction, and the additional wall facing portion is arranged on the other side.

In this way, the wall facing portion is connected to one side of the pipe and the additional wall facing portion is connected to the other side with respect to the pipe facing portion, and the pipe facing portion is arranged between the pipe and the wall. Therefore, the force with which the wall pushes the wall facing portion acts as the force pushing the wall at the additional wall facing portion via the pipe facing portion. On the contrary, the force of the wall pushing the additional wall facing portion acts as a force pushing the wall at the wall facing portion via the pipe facing portion. Therefore, the pressing between the wall facing portion and the wall is reinforced, and the pressing between the additional wall facing portion and the separate wall is also reinforced. Further, since the pipe facing portion is urged from both sides of the pipe in the same direction, the position of the pipe is stabilized.

Further, according to the ninth aspect, the pipe constitutes a heat pipe. In this way, the heat conduction efficiency of the heat pipe can be improved.

12 Cooling pipes 211, 213, 221, 223, 215 Wall facing parts 212, 222, 214 Pipe facing parts 23, 24 Repulsive materials BW1, BW2 Heat transfer wall BWs Small wall SL slit

Claims (9)

A heat transfer device that mediates heat conduction between a wall (BW1, BW2) and a tube (12) extending along the wall.
A plate-shaped wall facing portion (211) arranged at a position closer to the wall among the pipe and the wall and facing the wall in a predetermined facing direction and conducting heat conduction with the wall.
A plate that is electrically conductively connected to the wall-facing portion, is recessed with respect to the wall-facing portion in a direction away from the wall in the facing direction, and conducts heat with the pipe at a position recessed with respect to the wall-facing portion. A heat transfer device provided with a tube facing portion (212) having a shape. The wall is formed with irregularities in the extending direction of the pipe.
The heat transfer device according to claim 1, wherein a slit (SL) is formed in the wall facing portion to separate the wall facing portion in the extending direction of the pipe. The wall contains a plurality of small walls (BWs).
The plurality of small walls are walls on the tube side of a plurality of battery units constituting the assembled battery.
The heat transfer device according to claim 2, wherein the unevenness of the wall is formed in the extending direction of the tube because the positions of the plurality of small walls in the opposite direction are deviated from each other. The heat transfer device according to claim 3, wherein the slit is opened so as to face between two adjacent small walls of the plurality of small walls and the two small walls. The heat transfer device according to any one of claims 1 to 4, further comprising an elastic member (23, 24) for urging the wall facing portion to the wall side. The heat transfer device according to any one of claims 1 to 5, wherein the wall facing portion has a portion that extends in a direction away from the pipe facing portion while being curved toward the wall. A separate wall arranged on the opposite side of the pipe from the wall and the pipe are arranged at a position closer to the separate wall, facing the separate wall in the opposite direction and conducting heat with the separate wall. With a plate-shaped separate wall facing portion (221)
It is thermally conductively connected to the separate wall facing portion, recessed with respect to the separate wall facing portion in a direction away from the separate wall in the facing direction, and heat with the pipe at a position recessed with respect to the separate wall facing portion. A plate-shaped separate tube facing portion (222) for conducting conduction is provided.
The wall facing portion and the separate wall facing portion extend in a direction away from the pipe while facing each other in the facing direction, and come into contact with each other in the facing direction at the end portion on the side far from the pipe. The heat transfer device according to any one of claims 1 to 6. It is provided with a plate-shaped additional wall facing portion (213) which is arranged at a position closer to the wall among the pipe and the wall and which faces the wall in the facing direction and conducts heat with the wall.
The pipe facing portion is thermally conductively connected to the additional wall facing portion, is recessed with respect to the additional wall facing portion in a direction away from the wall in the facing direction, and is recessed with respect to the additional wall facing portion. Conducts heat conduction with the tube, and faces the tube between the tube and the wall.
Claims 1 to 7, wherein the wall facing portion is arranged on one side of the pipe and the additional wall facing portion is arranged on the other side in an orthogonal direction orthogonal to the facing direction and orthogonal to the extending direction of the pipe. The heat transfer device according to any one. The heat transfer device according to any one of claims 1 to 8, wherein the pipe constitutes a heat pipe.

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