Thermal dissipation device and electrical connection box, electrical energy storage device and vehicle comprising such a dissipation device

Abstract

The invention relates to a thermal dissipation device, in particular for a motor vehicle, the device comprising a heat pipe (10) configured for a heat exchange between a hot source (12), comprising an electrical member (14), and a cold source (16), the device further comprising at least one first thermal interface member (20) in heat exchange relationship with the heat pipe (10) and intended to be in heat exchange relationship with one of the hot or cold sources (12, 16), the thermal interface member (20) comprising a first casing (22) at least partially filled with a dielectric fluid for heat exchange between the heat pipe (10) and the hot or cold source (12, 16) via the first thermal interface member (20).

Description

[0001] DESCRIPTION

[0002] TITLE: Heat dissipation device as well as electrical connection box, electrical energy storage device and vehicle including such a dissipation device.

[0003] The invention relates to a heat dissipation device, particularly for a motor vehicle. It also relates to an electrical connection box for an electrical energy storage device, particularly a battery, comprising such a dissipation device. It further relates to such an electrical energy storage device, particularly a battery, comprising such a box and / or such a dissipation device. It also relates to a vehicle comprising such a storage device, such a box, and / or such a dissipation device.

[0004] In this field, it is known that electric or hybrid vehicles equipped with a battery pack include a casing that houses several electrochemical cells connected together and providing a high voltage at the battery terminals, typically a voltage of several hundred volts.

[0005] It is then necessary to equip the battery with an electrical connection box containing safety electrical components (relays, fuses) in order to cut off the current when needed. These components are connected using busbars through which the battery's input or output current flows.

[0006] In certain situations, the battery supplies or receives a high electrical power. This is the case, for example, during so-called fast charging of the vehicle's battery, or when the vehicle must exert significant traction. In these situations, the flow of a high-intensity current generates a sharp increase in temperature, particularly in areas commonly referred to as "hot spots," such as safety-critical electrical components, which then present an increased risk of degradation. To mitigate this risk, it is common practice to oversize these components. However, this results in significant bulk, an excessive increase in weight, and a higher cost.

[0007] The invention aims to overcome at least in part the previous drawbacks and proposes for this purpose a heat dissipation device, in particular for motor vehicles, said device comprising a heat pipe configured for heat exchange between, on the one hand, a hot source comprising an electrical component, and, on the other hand, a cold source, said device further comprising at least a first thermal interface component in heat exchange relationship with said heat pipe and intended to be in heat exchange relationship with one of said hot or cold sources, said first thermal interface component comprising a first housing filled at least in part with a dielectric fluid for heat exchange between said heat pipe and said hot or cold source via said first thermal interface component.

[0008] Thus, according to the invention, the heat pipe enhances heat dissipation and the first thermal interface element allows heat exchange with the heat pipe while providing electrical insulation through the dielectric fluid.

[0009] In the context of an application to an electrical energy storage device, it is thus possible to reduce the temperature to which the safety devices will be subjected and to avoid their oversizing.

[0010] According to various additional features of the invention, which may be taken together or separately and which constitute so many embodiments of the invention:

[0011] - said first thermal interface element includes a first insert in contact, on the one hand, with said fluid and, on the other hand, with said heat pipe.

[0012] - said first thermal interface element comprises at least a second insert in contact, on the one hand, with said fluid and, on the other hand, configured to be in contact with a conductor intended to be thermally and electrically connected to said hot or cold source,

[0013] - said second inserts are two in number, namely a second insert, called positive, and a second insert, called negative, - said first thermal interface element comprises an additional heat exchange surface immersed at least partially in said fluid,

[0014] - said first housing includes openings for the passage of said first and / or second inserts,

[0015] - said first housing includes a filling valve,

[0016] - the said first box has two branches connected by a base,

[0017] - said first insert is located at the base,

[0018] - said second inserts are respectively located at the level of one of the branches,

[0019] - said branches are parallel to each other,

[0020] - said first and / or second inserts comprise a tubular body extending between two opposite ends,

[0021] - an internal surface of the body of said first insert forms an exchange surface with said heat pipe,

[0022] - said first and / or second inserts comprise at least one collar extending radially from said body,

[0023] - said collar has a groove to accommodate a sealing gasket and / or an adhesive material,

[0024] - said second inserts are intended to be traversed by fixing elements of said first housing to said hot or cold source,

[0025] - the collar of said second inserts has a front surface forming a heat exchange surface, called external, said front surface being intended to be in contact with said hot or cold source or a head of said fixing members.

[0026] - said front surface protrudes beyond a surface of the first casing,

[0027] - said frontal surface has a radial extension intended to be greater than a radial extension of the head of the fastening elements,

[0028] - said first and / or second inserts have a heat exchange surface, referred to as internal, with said fluid in said first casing,

[0029] - the aforementioned first and / or second inserts are made of copper,

[0030] - said first case is made of polymer or ABS.

[0031] - said first housing comprises two half-casings assembled together, - said device is configured so that said heat exchange with the heat pipe occurs between said hot source and said first thermal interface element, said hot,

[0032] - said front surface of the second inserts has a radial extension intended to be greater than a radial extension of electrical connection terminals of said hot source,

[0033] - said device includes another thermal interface element, referred to as a cold element, intended for heat exchange between said heat pipe and said cold source,

[0034] - said cold thermal interface element comprises a body, intended to be in contact with said heat pipe, and a diffuser in contact with said body and intended to be in contact with said cold source,

[0035] - the body of said cold thermal interface component includes a flange having a sleeve intended to accommodate said heat pipe,

[0036] - said diffuser is formed of a plate,

[0037] - said diffuser has a disc-shaped configuration,

[0038] - said flange is oriented orthogonally to said plate,

[0039] - said device includes a thermal conduction pad, said pad being intended to be located between said cold thermal interface element and said cold source,

[0040] - said device comprises an electrically conductive busbar intended to be electrically connected to said hot source,

[0041] - said heat pipe is straight,

[0042] - said heat pipe has a rounded cross-section,

[0043] - said heat pipe has a substantially circular cross-section,

[0044] - said heat pipe is sintered,

[0045] - said heat pipe is twisted,

[0046] - said heat pipe is intended to be substantially horizontal in use,

[0047] - said first insert is oriented parallel to the second inserts,

[0048] - said collars of the first and / or second inserts are two in number per insert and located at the ends of the body of said first and / or second inserts,

[0049] - said additional heat exchange surface is in contact with said first insert, - said additional surface includes a fixing zone for said first insert,

[0050] - said additional surface has extensions extending into said branches from said attachment zone,

[0051] - the free ends of said extensions are respectively located at a distance from said second inserts,

[0052] - said heat pipe is intended to be substantially vertical in use,

[0053] - said first insert is oriented substantially orthogonally to the second inserts,

[0054] - the collar of the first insert is unique and located between the ends of the body of said first insert,

[0055] - the collars of the second inserts are two per insert and are respectively located at the ends of the body of said second inserts,

[0056] - said additional heat exchange surface is in contact with one of said second inserts,

[0057] - said additional surface includes a fixing area for said second insert,

[0058] - said fixing zone is located at one end of said additional surface,

[0059] - said additional surface has an extension extending in one of said branches from said fixing zone,

[0060] - a free end of said extension is located at a distance from said first insert,

[0061] - said first housing has a notch for housing the heads of said fastening elements.

[0062] The invention also relates to an electrical connection box for an electrical energy storage device, in particular a battery of accumulators, comprising a hot source, a cold source and a dissipation device as described above.

[0063] According to various additional features of the invention, which may be taken together or separately and which constitute so many embodiments of the invention: - said electrical component includes an electrical protection component,

[0064] - said electrical protection device includes an electrical relay,

[0065] - said heat source includes electrical connection terminals, electrically connected to said electrical component and in heat exchange relationship with said dissipation device,

[0066] - said cold source comprises a plate exhibiting a thermal inertia much greater than the thermal inertia of said hot source.

[0067] The invention further relates to an electrical energy storage device, in particular a battery of accumulators, comprising a connection box and / or a dissipation device as described above.

[0068] Advantageously, the connection box plate includes all or part of a lower face of a housing for the electrical energy storage device.

[0069] The invention further relates to a vehicle comprising a storage device, a connection box and / or a dissipation device as described above.

[0070] The invention will be better understood, and other objects, details, features and advantages thereof will become more apparent from the following detailed explanatory description of at least one embodiment of the invention given by way of purely illustrative and non-limiting example, with reference to the accompanying schematic drawings, among which:

[0071] [Fig 1] schematically illustrates, in side view, a motor vehicle according to the invention;

[0072] [Fig 2] schematically illustrates in perspective, exploded view, a heat dissipation device according to a first embodiment of the invention;

[0073] [Fig 3] reproduces figure 2 in assembled mode;

[0074] [Fig 4] schematically illustrates in perspective a first thermal interface organ of the dissipation device of figures 2 and 3, in exploded view;

[0075] [Fig 5] schematically illustrates in perspective the thermal interface element of figure 4, in assembled mode, according to a cross-sectional view;

[0076] [Fig 6] schematically illustrates in perspective, in exploded view, the heat dissipation device of figures 2 and 3 with a hot source and a cold source; [Fig 7] reproduces figure 6 in assembled mode;

[0077] [Fig 8] schematically illustrates in perspective the first heat dissipation organ of a second embodiment of the heat dissipation device according to the invention, in exploded view;

[0078] [Fig 9] schematically illustrates in perspective, in exploded view, the heat dissipation device according to the second embodiment of the invention with a hot source and a cold source;

[0079] [Fig 10] reproduces figure 9 in assembled mode.

[0080] It should first be noted that the terms "first", "second", "third", ... are only used to distinguish the components concerned from each other and do not imply any order or possible importance of said components.

[0081] The invention relates to a heat dissipation device, particularly for motor vehicles.

[0082] As illustrated in Figure 1, the invention also relates to an electrical connection box 1, an electrical energy storage device 2, in particular a battery, and a vehicle V comprising such a dissipation device. The latter is placed, for example, in the electrical connection box 1, said box 1 being used to connect the electrical energy storage device 2 to an electrical network 3 of the motor vehicle V. Said vehicle V is advantageously a vehicle comprising an electric or hybrid powertrain, connected to said electrical network 3.

[0083] As illustrated in the following figures, said heat dissipation device includes a heat pipe 10, configured for heat exchange between, on the one hand, a hot source 12 and, on the other hand, a cold source 16. By "heat pipe" is meant a heat-conducting element allowing a fluid to circulate inside the element, in particular by capillarity and / or by gravity, this in a closed cycle according to a principle of successive evaporation and condensation of the fluid.

[0084] Preferably, said heat pipe 10 is straight. Such a configuration promotes its operation. It thus has two opposing longitudinal ends, here tapered. Advantageously, said heat pipe 10 has a rounded cross-section, in particular circular. Said heat pipe 10 is, in particular, sintered and / or twisted. As more particularly illustrated in Figures 2, 3, 9 and 10, said device further comprises at least one first thermal interface element 20 in heat exchange with said heat pipe 10 and intended to be in heat exchange with one of said hot or cold sources, here said hot source 12.

[0085] According to the invention, said first thermal interface element 20 comprises a first housing 22. Said first housing 22 has, for example, two arms 24a, 24b connected by a base 26, giving it a U-shaped and / or V-shaped configuration. Said arms 24a, 24b are parallel to each other. Said first housing 22 is, for example, made of polymer or ABS.

[0086] The first housing 22, for example, has two large, opposite, parallel flat faces 28, 30 connected by lateral faces. In other words, the first housing 22 can be viewed as a rectangular parallelepiped with a groove 32 extending from one of the large faces 28, 30 to the other. This groove 32 extends from the base 26 to one of the lateral faces opposite the base 26, such that the branches 24a, 24b are defined on either side of the groove 32. Some of the lateral faces form chamfers 38 at the level of a connection between the base 26 and the branches 24a, 24b.

[0087] The said device is configured so that the said heat exchange with the heat pipe 10 takes place, as already stated, between the said hot source 12 and the said hot thermal interface element 20.

[0088] Advantageously, said device includes another thermal interface element 40, called cold, intended for heat exchange between said heat pipe 10 and said cold source 16. Said cold thermal interface element 40 is, in particular, made of copper.

[0089] The said cold thermal interface element 40 comprises, for example, a body 42, intended to be in contact with said heat pipe 10, and a diffuser 44 in contact with said body 42 and intended to be in direct or at least thermal contact with said cold source 16. Said body 42 and said diffuser 44 are, for example, in material continuity with each other.

[0090] The body of said cold thermal interface element 40 includes a sleeve-shaped flange 46 for receiving said heat pipe 10, in particular one of the longitudinal ends of said heat pipe 10, for example by means of an interference fit such as that known as the H7 / p6 fit. This sleeve has a substantially circular cross-section with an inner diameter close to the outer diameter of said heat pipe 10.

[0091] The diffuser 44 is formed, for example, of a plate 48. Here, the plate 48 has a disc-shaped configuration. The flange 46 is oriented orthogonally to the plate 48. The plate 48 extends radially from a base of the flange 46. The flange 46 extends coaxially to the plate 48.

[0092] Preferably, the device comprises a thermal conduction pad 50. This pad 50 is intended to be located between the cold thermal interface element 16, in particular the diffuser 44, and the cold source 16. The pad 50 is advantageously compressible. It is, for example, a layer of a paste-like material. It has the advantage of filling any surface defects of the cold thermal interface element 40 and the cold source 16, particularly on their facing surfaces. The pad 50 and the plate 48 are coaxial, with the same diameter. As will become apparent later in relation to the invention, it is not necessary for the pad 50 to have electrical insulation properties.

[0093] Advantageously, although not illustrated, the said device further comprises one or more conduction busbars intended to be connected electrically, or even thermally, to the said hot source 12.

[0094] As illustrated in Figures 6, 7, 9 and 10, said hot source 12 includes an electrical element 14. Said electrical element 14 is formed here of an electrical protection element, for example an electrical relay and / or a fuse intended to open in case of an anomaly in the circuit 3. Said hot source 12 includes electrical connection terminals 120a, 120b, electrically and / or thermally connected to said electrical element 14 and in thermal exchange relationship with said dissipation device.

[0095] The cold source 16 comprises, for example, a plate 160 having a thermal inertia much greater than that of the hot source 12. The plate 160 may optionally comprise all or part of a lower face of a housing for the electrical energy storage device. The plate 160 is provided with one or more channels for circulating a heat transfer fluid. It is made, in particular, of an aluminum profile. As can be seen more clearly in Figures 4, 5, and 8, according to the invention, the first housing 22 is at least partially filled with a dielectric fluid F enabling heat exchange between the heat pipe 10 and the corresponding heat source, here, as already stated, the hot source 12, via the first thermal interface element 20.

[0096] The first thermal interface element 20 thus allows heat exchange with the heat pipe 10 while providing electrical insulation thanks to the dielectric fluid. The heat pipe 10 therefore has the advantage of not being live. This also explains why the bearing 50 is not necessarily electrically insulating.

[0097] In the various illustrated embodiments, said first thermal interface element 20 comprises a first insert 52 in contact, on the one hand, with said fluid F and, on the other hand, with said heat pipe 10. Said first thermal interface element 20 further comprises at least one second insert 54a, 54b in contact, on the one hand, with said fluid F and, on the other hand, configured to be in contact with a conductor 64 (illustrated figures 6, 7, 9 and 10), intended to be thermally and electrically connected to said corresponding source, here, as already stated, the hot source 12. Said second inserts are two in number, namely a second insert 54a, referred to as positive, and a second insert 54b, referred to as negative.

[0098] The said first and / or second inserts 52, 54a, 54b are, for example, made of copper.

[0099] The said first and / or second inserts 52, 54a, 54b comprise a tubular, in particular cylindrical, body 58 extending between two opposite ends.

[0100] The first and / or second inserts 52, 54a, 54b herein comprise at least one collar 60 extending radially from the body 58, in particular at one and / or the other of its ends. Advantageously, the collar 60 has a groove 62, in particular annular, for housing a sealing gasket and / or an adhesive material (not shown) to provide a seal for the first housing 22.

[0101] An internal surface of the body 58 of said first insert 52 forms a heat exchange surface with said heat pipe 10. Said heat pipe 10 is mounted in said first insert 52, in particular, by an interference fit, in particular that known as H7p6. Said heat exchange surface therefore has a substantially circular cross-section with an internal diameter close to the external diameter of said heat pipe 10.

[0102] The second inserts 54a, 54b are intended to be traversed by fastening elements of the first housing 22 to the corresponding source, here, as already stated, the hot source 12. These are, for example, screws. Advantageously, the fastening elements form the conductor 64.

[0103] The collar 60 of said second inserts 54a, 54b has a front surface 66 forming a heat exchange surface, said external, said front surface 66 being intended to be in contact with said hot source 12 for one of the front faces located on one side of said second inserts 54a, 54b and / or with a head of said fixing members 64, for one of the front faces located on the other side of said second inserts 54a, 54b.

[0104] The front surface 66 of the second inserts 54a, 54b has a radial extension intended to be greater than the radial extension of the electrical connection terminals 120a, 120b for the flanges 60 located opposite them. Alternatively or cumulatively, the front surface 66 has a radial extension intended to be greater than the radial extension of the head of the fasteners 64 for the flanges 60 located opposite them.

[0105] The first and / or second inserts 52, 54a, 54b have a heat exchange surface, referred to as internal, with the fluid F in the first housing 22. The first and / or second inserts 52, 54a, 54b are completely immersed in the fluid F for their portion located inside the first housing 22. In other words, the first and / or second inserts 52, 54a, 54b are at a distance from the lateral surfaces of the first housing 22. The internal heat exchange surface is formed here by an external surface of the body 58 for the portion of the body 58 located between the collars 60.

[0106] The first housing 22 includes passage holes 56 for the first and / or second inserts 52, 54a, 54b. The passage holes 56 are located at the level of the large faces 28, 30 and / or one of the lateral faces of the first housing 22. They have a profile complementary, here circular, to those of the first and / or second inserts 52, 54a, 54b, in particular to their collar 60.

[0107] The front surface 66 of the flanges 60 of the second inserts 54a, 54b is flush beyond a surface of the first housing 22, in this case the large surfaces 28, 30, at the level of the passage holes 56, in particular for the flanges 60 located opposite the connection terminals 120a, 120b. The groove 62 and therefore the seal and / or the adhesive material are located opposite a slice of material of the large faces 28, 30 and / or the relevant lateral face of the first housing 22.

[0108] The said first insert 52 is located, for example, at the base 26. The said second inserts 54a, 54b are respectively located, for example, at one of the branches 24a, 24b, in particular at the free ends of the said branches 24a, 24b.

[0109] In the illustrated embodiments, the first housing 22 comprises two half-cases 22a, 22b. They are joined together, for example, by heat welding. The half-cases are connected to each other at a plane parallel to the large faces 28, 30 of the first housing 22. In other words, each of the large faces 28, 30 of the first housing 22 belongs respectively to one of the half-cases 22a, 22b. Each of the lateral faces of the first housing is formed partly by one of the half-cases 22a, 22b and partly by the other.

[0110] Advantageously, the first housing 22 includes a fluid filling valve 34. It is intended to be located in the upper part of the first housing 22 during filling, or even during use. Here, it is located on one of the lateral faces of the first housing 22 connecting the chamfers 38, near one of them.

[0111] Preferably, said first thermal interface element 20 comprises an additional heat exchange surface 70, immersed at least partly in said fluid F and in heat exchange relationship with at least one of said first and / or second inserts 52, 54a, 54b.

[0112] Specific configurations, including said first housing 22 and said additional exchange surface 70, will now be described in relation to each of the illustrated embodiments.

[0113] In figures 4 and 5, according to the first embodiment, said heat pipe 10 is intended to be substantially horizontal in use.

[0114] The first insert 52 is oriented parallel to the second inserts 54a, 54b. Their passage orifices 56 are located two by two opposite each other at the level of the large faces 28, 30. The collars 60 of the first and / or second inserts 52, 54a, 54b are two per insert and are located at the ends of the body of the first and second inserts 52, 54a, 54b.

[0115] The additional heat exchange surface 70 is in contact with the first insert 52. It includes a fastening zone 72 for the first insert 52, notably by welding and / or snap-fitting. The additional heat exchange surface 70 further has extensions 74 extending into the arms 24a, 24b from the fastening zone 72. The free ends of the extensions 74 are respectively located at a distance from the second inserts 54a, 54b.

[0116] In figure 8, according to the second embodiment, said heat pipe 10 is intended to be substantially vertical in use.

[0117] The said first insert 52 is oriented substantially orthogonally to the second inserts 54a, 54b.

[0118] The collar 60 of the first insert 52 is unique and located between the ends of the body 58 of said first insert 52. The passage orifice 56 with which it cooperates is located at the level of one of the lateral faces of said first housing, namely here that located between the chamfers 38.

[0119] The collars 60 of the second inserts 54a, 54b are two per insert and are respectively located at the ends of the body 58 of said second inserts. The passage orifices 56 cooperating with said collars 60 of said second inserts 54a, 54b are located in pairs opposite each other at said large faces 28, 30.

[0120] The said additional heat exchange surface 70 is in contact with one of the said second inserts 54a, 54b. Here, one of the said additional surface 70 is provided with each second insert 54a, 54b.

[0121] The additional surface 70 includes a fixing zone 76 for the second insert 54a, 54b, in particular by welding. The fixing zone 70 is located at one end of the additional surface 70.

[0122] The said additional surface 70 further has an extension 78 extending in one of the said branches 24a, 24b from the said fixing zone 76. A free end of the said extension 78 is located at a distance from the said first insert 52.

[0123] It is further noted that the first housing 22 has a notch 80 for housing the heads of the fasteners 64. Referring again to Figures 6 and 7, as well as 9 and 10, it can be seen that the hot source 12 comprises a second housing containing the electrical component 14, and on the surface of which are the connection terminals 120a, 120b. The second housing includes a rib 122 between the connection terminals 120a, 120b. The rib 122 engages in the groove 32 of the hot thermal interface component 20.

[0124] As already mentioned, said hot source 12 is positioned against said hot thermal interface member 20 by bringing said connection terminals 120a, 120b into contact with the collars 60, provided opposite, of said second inserts 54a, 54b under the effect of the fixing members 64.

[0125] The said connection box further includes here a support 90 for said hot source 12. The said second box is fixed to said support 90. The said support 90 is intended to be attached to an armature, not illustrated, of said connection box.

[0126] In the first embodiment corresponding to Figures 6 and 7, the hot source 12 is positioned under the heat pipe 10, between its two longitudinal ends. The cold source 16 is oriented substantially vertically.

[0127] In the second embodiment corresponding to Figures 9 and 10, said hot source 12 is positioned in the lower part, below one of the ends of said heat pipe 10. It is radially offset with respect to said heat pipe 10. The cold source 16 is located in the upper part. It is oriented in a substantially horizontal manner.

Claims

DEMANDS 1. Heat dissipation device, in particular for motor vehicle, said device comprising a heat pipe (10) configured for heat exchange between, on the one hand, a hot source (12) comprising an electrical component (14), and, on the other hand, a cold source (16), said device further comprising at least a first thermal interface component (20) in heat exchange relationship with said heat pipe (10) and intended to be in heat exchange relationship with one of said hot or cold sources (12, 16), said thermal interface component (20) comprising a first housing (22) filled at least in part with a dielectric fluid (F) for heat exchange between said heat pipe (10) and said hot or cold source (12, 16) via said first thermal interface component (20).

2. Device according to the preceding claim configured so that said heat exchange with the heat pipe (10) takes place between said hot source (12) and said first thermal interface element (20), said hot, said device comprising another thermal interface element (40), said cold, intended for heat exchange between said heat pipe (10) and said cold source (16), said device comprising a thermal conduction pad (50), said pad (50) being intended to be located between said cold thermal interface element (40) and said cold source (16).

3. Device according to any one of the preceding claims wherein said first thermal interface member (40) comprises a first insert (52) in contact, on the one hand, with said fluid (F) and, on the other hand, with said heat pipe (10), and / or at least a second insert (54a, 54b) in contact, on the one hand, with said fluid (F) and, on the other hand, configured to be in contact with a conductor intended to be thermally and electrically connected to said hot or cold source (12, 16).

4. Device according to the preceding claim in which said second inserts are two in number, namely a second insert (54a), said to be positive, and a second insert (54b), said to be negative. 5 Device according to any one of claims 3 or 4 in which said first housing (22) has two arms (24a, 24b) connected by a base (26), said first insert (52) being located at the level of the base (26) and / or said second inserts (54a, 54b) being respectively located at the level of one of the arms (24a, 24b).

6. Device according to any one of claims 3 to 5 wherein said first and / or second inserts (52, 54a, 54b) comprise a tubular body (58) extending between two opposite ends, said first and / or second inserts (52, 54a, 54b) comprising at least one collar (60) extending radially from said body (58).

7. Device according to the preceding claim in which said second inserts (54a, 54b) are intended to be traversed by fastening members (64) of said first housing (20) to said hot or cold source (12, 16), the collar (60) of said second inserts (54a, 54b) having a front surface (66) forming a heat exchange surface, said external, said front surface (66) being intended to be in contact with said hot or cold source (12, 16) or a head of said fastening members (64).

8. Device according to any one of claims 3 to 7 in which said first thermal interface element (20) comprises an additional heat exchange surface (70) immersed at least partially in said fluid (F).

9. Device according to the preceding claim in which said heat pipe (10) is intended to be substantially horizontal in use.

10. Device according to the preceding claim in which said additional heat exchange surface (70) is in contact with said first insert (52).

11. Device according to claim 8 in which said heat pipe (10) is intended to be substantially vertical in use.

12. A device according to the preceding claim, wherein said additional heat exchange surface (70) is in contact with one of said second inserts (54a, 54b).

13. An electrical connection box for an electrical energy storage device, in particular a battery, comprising a hot source (12), a cold source (16), and a device according to any one of the preceding claims.

14. An electrical energy storage device, in particular a battery, comprising a device according to any one of claims 1 to 12.

15. Vehicle comprising a device according to any one of claims 1 to 12.

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