JP7033730B2 - Cooling device, battery temperature control system and vehicle - Google Patents

Description

The present disclosure relates to cooling devices, battery temperature control systems and vehicles.

Hybrid vehicles and electric vehicles are equipped with in-vehicle batteries that supply electric power to the motor that is the drive source. A hybrid heat exchanger that simultaneously supplies both a refrigerant and cooling water in order to suppress a temperature rise of an in-vehicle battery is known (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2010-50000

By the way, in a cooling device or the like that suppresses a temperature rise of an in-vehicle battery, it is required to reduce the thickness, improve the immediate cooling property, and improve the temperature uniformity.

The cooling device of the present disclosure includes a first surface, a first surface-like member having a second surface opposite to the first surface, a third surface facing the second surface, and the opposite to the third surface. A second planar member provided with a fourth surface, a first coolant passage provided between the second surface and the third surface for flowing a coolant, and the second surface and the third surface. It is provided between the first refrigerant passage, which is adjacent to the first coolant passage and allows the refrigerant to flow, and is provided between the second surface and the third surface, and is adjacent to the first refrigerant passage for cooling. A second refrigerant passage provided between the second surface and the third surface, adjacent to the second coolant passage, and a second refrigerant passage through which the refrigerant flows, the second surface, and the second surface and the third surface. A first wall portion connected to the third surface and separating the first coolant passage and the first refrigerant passage, and connected to the second surface and the third surface, the first refrigerant passage and the second refrigerant passage. The second wall portion that separates the coolant passage and the third wall portion that is connected to the second surface and the third surface and separates the second coolant passage and the second refrigerant passage are provided at least. The one wall portion, the second wall portion, and the third wall portion are arranged along a predetermined direction parallel to the second surface, and at least a plurality of secondary batteries arranged along the first surface. The cell can be cooled.

The battery temperature control system of the present disclosure includes the cooling device and a plurality of secondary battery cells arranged along the first surface of the cooling device.

The vehicle of the present disclosure is a vehicle including the cooling device, wheels rotating along the traveling direction, and a passenger compartment, and includes the first planar member and the second planar member of the cooling device. The first wall portion, the second wall portion, and the third wall portion of the cooling device are arranged along the floor surface of the vehicle interior, and are arranged along the traveling direction.

The vehicle of the present disclosure is a vehicle including a cooling device, wheels rotating along a traveling direction, and a passenger compartment, and the first-plane member and the second-plane member of the cooling device are described above. The first wall portion, the second wall portion, and the third wall portion of the cooling device are arranged along the floor surface of the vehicle interior, and are arranged along the direction orthogonal to the traveling direction.

According to the present disclosure, since the refrigerant passage and the coolant passage can be arranged alternately, the temperature uniformity is maintained by circulating the coolant that has exchanged heat with the refrigerant, and the mountability of the secondary battery cell is improved by making the cooling device thinner. Immediate cooling can be improved by improving and using the direct heat exchange of the refrigerant and the in-vehicle battery together. Improving mountability leads to an improvement in the volumetric energy density of the in-vehicle battery pack, and improvement in immediate cooling leads to an improvement in the allowable charge / discharge current value.

It is a front perspective view which shows an example of the battery temperature adjustment system of this disclosure. A first embodiment of the cooling device is shown with reference to FIG. 1, in which (a) a front perspective view, (b) (a) a sectional view taken along the line AA, (c) and (a) a simplified sectional view taken along the line BB, (d). ) Is a simplified cross-sectional view taken along the line CC of (a). It is a schematic diagram which shows an example of Example 1 of the flow of the coolant and the refrigerant based on FIG. 1, and is (a) the flow of the coolant, (b) the flow of the refrigerant. An example of a coolant passage and a refrigerant passage is shown, and is a perspective view of (a) a battery temperature adjusting system, and (b) a cross-sectional view taken along the line AA of (a). Following FIG. 4, it is a cross-sectional view taken along the line AA of FIG. 4A, which is (a) an angle definition, (b) a distance definition, and (c) an area definition. FIG. 6 is a cross-sectional view taken along the line AA of FIG. 4A showing a second embodiment of the cooling device. A third embodiment of the cooling device is shown, (a) a front perspective view of a third planar member, (b) (a) a cross-sectional view taken along the line AA, (c) (a) a cross-sectional view taken along the line BB, (a). d) FIG. 2 is a cross-sectional view taken along the line CC of (a). It is a block diagram which shows an example of the battery temperature adjustment system of this disclosure. An example of Example 2 of the flow of the coolant and the refrigerant of FIG. 3 is shown, (a) a front perspective view explaining the flow, (b) a schematic view of the flow, and (c) a simplified sectional view taken along the line AA of (a). , (D) is a simplified cross-sectional view taken along the line BB of (a). An example of Example 3 of the flow of the coolant and the refrigerant of FIG. 3 is shown, (a) a front perspective view explaining the flow, (b) a schematic view of the flow, and (c) a simplified sectional view taken along the line AA of (a). , (D) is a simplified cross-sectional view taken along the line BB of (a). A fourth embodiment of the cooling device is shown, which is (a) a front perspective view, (b) (a) a simplified sectional view taken along the line AA, and (c) (a) a simplified sectional view taken along the line BB. An example of the assembly of the fourth embodiment is shown, and is (a) a schematic assembly diagram of a tank and (b) a schematic diagram of joining with a tank. A fifth embodiment of the cooling device 20 is shown, which is (a) a front perspective view and (b) an exploded perspective view. The cooling liquid passage and the refrigerant passage of the 5th Embodiment are shown, and it is (a) partial perspective view, (b) (a) part A enlarged view. The coolant passage and the refrigerant passage of the fifth embodiment are shown, (a) a front perspective view of a cooling device, (b) (a) a cross-sectional perspective view of AA, and (c) (a) a cross-sectional view of BB. It is a perspective view. It is shown that the cooling device of the fifth embodiment was applied to the battery temperature adjustment system, (a) a front perspective view, (b) (a) a cross-sectional view taken along the line AA, and (c) (a) a cross-sectional view taken along the line BB. It is a figure. A sixth embodiment of the cooling device is shown, (a) a front perspective view of the cooling device, (b) a simplified view of the AA cross section of the refrigerant passage (a), and (c) the B- of the refrigerant passage (a). B is a simplified view of the cross section, (d) a simplified view of the CC cross section of the coolant passage (a), and (e) a simplified view of the DD cross section of the coolant passage. FIG. 7 shows a seventh embodiment of the cooling device, (a) a simplified cross-sectional view taken along the line AA of FIG. 16 (a), and (b) a simplified cross-sectional view taken along the line BB of FIG. 16 (a). It is a schematic diagram explaining the state which the cooling device of this disclosure is mounted on a vehicle, (a) a side view of a vehicle, (b) a rear view of a vehicle.

Hereinafter, an embodiment (hereinafter, referred to as “the present embodiment”) specifically disclosing the cooling device, the battery temperature adjusting system, and the vehicle according to the present disclosure will be described in detail with reference to the drawings as appropriate. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of already well-known matters and duplicate explanations for substantially the same configuration may be omitted. This is to avoid unnecessary redundancy of the following description and to facilitate the understanding of those skilled in the art. It should be noted that the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

Hereinafter, a preferred embodiment for carrying out the present disclosure will be described in detail with reference to the drawings.

FIG. 1 is a front perspective view showing an example of the battery temperature adjusting system of the present disclosure. 2A and 2B are based on FIG. 1, in which FIG. 2A is a front perspective view, FIG. 2B is a sectional view taken along the line AA of FIG. It is a simplified cross-sectional view of CC of (a). The cross-section simplified diagram is a diagram in which the cross-sectional line is simplified by a solid line. The battery temperature control system of the present disclosure will be described in detail with reference to FIGS. 1 and 2. The battery temperature control system disclosed in the present disclosure can also be regarded as an in-vehicle battery pack.

The battery temperature adjusting system 1 includes a plurality of battery modules 10 and a cooling device 20 for cooling the plurality of mounted battery modules 10. The battery module 10 includes a plurality of secondary battery cells 11 inside. The secondary battery cell 11 may have a rectangular parallelepiped shape as shown in FIG. 1 or a cylindrical shape (not shown).

The secondary battery cell 11 is, for example, a battery cell that stores electric energy that is a drive source for a traveling motor in a hybrid vehicle or an electric vehicle, and is a component that requires temperature control such as cooling. Each battery module 10 has a box shape that is longer in the front-rear direction than in the left-right direction, and in the present embodiment, a plurality of battery modules 10 are arranged in the front-rear and left-right directions on the cooling device 20. The battery module 10 is formed by accommodating a plurality of secondary battery cells 11 in a predetermined box-shaped case shown in the drawing in a state of being arranged side by side as described above. The battery module 10 may not have a predetermined case, and a battery module 10 may be simply a bundle of a plurality of secondary battery cells 11. Further, the unit called the battery module 10 is not indispensable, and the cooling device 20 may simply cool each of the plurality of secondary battery cells 11.

The cooling device 20 is a device for cooling the secondary battery cell 11, and is sometimes called a cooling plate. The height of the cooling device 20 is shorter than the length in the front-rear direction and the left-right direction, and the cooling device 20 of the present embodiment has a plate shape having a low height. The plan view is not limited to the shape of the present embodiment, and may be a box shape, a square shape, or a cylindrical shape that is shorter in the front-rear direction than in the left-right direction.

Here, Cartesian coordinates are introduced for the drawing. In the drawing, the line drawn diagonally from the upper left to the lower right when the paper is placed vertically is defined as the x-axis (because the drawing is a perspective view, it is a diagonal line). A line drawn diagonally from the lower left to the upper right is defined as the y-axis, and a line drawn in the vertical direction is defined as the z-axis. The surface virtually defined on the x-axis and the z-axis is defined as the first virtual surface S1, and the surface virtually defined on the z-axis and the y-axis is defined as the second virtual surface S2. Then, the first virtual surface S1 and the second virtual surface S2 are orthogonal to each other. The method of taking the x-axis, y-axis, and z-axis is not limited to that of this example.

The cooling device 20 includes a first planar member 30 in contact with the case of the battery module 10, a second planar member 40 arranged to face the first planar member 30, a first planar member 30, and a second surface member 30. It includes a third planar member 50 arranged between the planar member 40 and the planar member 40. A plurality of secondary battery cells 11 provided inside the battery module 10 are arranged along the first planar member 30. The heat of these secondary battery cells 11 can be transferred to the first planar member 30 of the cooling device 20 via the case of the battery module 10 or the like. Further, when the battery module 10 does not have a case, the heat of these secondary battery cells 11 can be transferred to the first planar member 30 of the cooling device 20 without going through the case.

The first planar member 30 and the second planar member 40 are formed in a flat shape. The third plane member 50 connects the first plane portion 51 having a plane, the second plane portion 52 having a plane facing the first plane portion 51, and the first plane portion 51 and the second plane portion 52. A wall portion 60 having an inclined surface is provided, and the first flat surface portion 51, the wall portion 60, the second flat surface portion 52, and the wall portion 60 are continuously arranged, and exhibit a cross-sectional waveform shape in which the arrangement is repeated. There is.

The first surface member 30 includes a first surface 31 in contact with a plurality of battery modules 10 and a second surface 32 opposite to the first surface 31, and the second surface member 40 includes a third surface 41. A fourth surface 42 opposite to the third surface 41 is provided, and the second surface 32 and the third surface 41 face each other.

In the present embodiment, the first flat surface portion 51 and the second surface 32 of the first planar member 30 are joined, and the second flat surface portion 52 and the third surface 41 of the second planar member 40 are joined to each other. The battery module 10 is arranged on the upper part of the one-sided member 30.

The first planar member 30 and the second planar member 40 of the cooling device 20 are separated from each other, and a plurality of cooling liquids are flowed between the first planar member 30 and the second planar member 40. The liquid passage 70 and the plurality of refrigerant passages 80 through which the refrigerant flows are arranged so as to be alternately arranged along the y-axis. The coolant passage 70 is formed by a first flat surface portion 51, a pair of wall portions 60 continuous on both sides of the first flat surface portion 51, and a second planar member 40, and the refrigerant passage 80 has a first planar shape. It is formed of a member 30, a pair of wall portions 60, and a second plane portion 52 continuous with the wall portions 60.

The coolant passage 70 is formed by a first planar member 30, a pair of wall portions 60, and a second flat surface portion 52 continuous with the wall portion 60, and the refrigerant passage 80 is formed by the first flat surface portion 51 and the first flat surface portion 52. It may be formed by the wall portion 60 which is continuous on both sides of one plane portion 51 and the second planar member 40. Further, it is desirable that the coolant passage 70 is formed larger than the refrigerant passage 80. 1 to 5 are the first embodiments of the cooling device 20.

On both side surfaces of the cooling device 20, a coolant pipe 21 communicating with the coolant passage 70 protruding from the side surface and a refrigerant pipe 22 adjacent to the coolant pipe 21 and communicating with the refrigerant passage 80 are provided. In the present embodiment, the coolant pipe 21 and the refrigerant pipe 22 are arranged vertically along the z-axis, and the coolant pipe 21 is arranged below the refrigerant pipe 22. An example of a refrigerant is HFC (Hydrofluorocarbon), and an example of a coolant is an antifreeze liquid containing ethylene glycol.

The coolant pipe 21 and the refrigerant pipe 22 communicate with the first tank 23 and the second tank 24 arranged along the y-axis on both sides of the cooling device 20, and the coolant passage 70 and the refrigerant passage 80 are the first tank 23. And communicate with the second tank 24. In the present embodiment, the coolant pipe 21, the refrigerant pipe 22, the first tank 23, and the second tank 24 are arranged along the y-axis on both sides of the cooling device 20, and the coolant passage 70 and the refrigerant passage 80 are y. They are arranged alternately along the axis.

In the coolant pipe 21, the first tank 23 side is the first coolant pipe 21a, and the second tank 24 side is the second coolant pipe 21b. In the refrigerant pipe 22, the first tank 23 side is the first refrigerant pipe 22a, and the second tank 24 side is the second refrigerant pipe 22b. Further, the first tank 23 and the second tank 24 are separated for a coolant and a refrigerant, and have a first upper tank 23a, a first lower tank 23b, a second upper tank 24a, and a second lower tank 24b. ing.

In the present embodiment, the first upper tank 23a and the second upper tank 24a are for the refrigerant, and the first lower tank 23b and the second lower tank 24b are for the coolant. The upper tanks 23a and 24a are formed by raising the side portion of the first planar member 30, and the lower tanks 23b and 24b are formed by a vertical wall of the second planar member 40 and the third planar member 50. (See FIGS. 2 (c) and 2 (d)).

2 (c) and 2 (d) explain the cross section of the first tank 23 side, but the same applies to the second tank 24 side. However, the direction of flow is reversed.

3A and 3B are schematic views showing an example of the flow of the coolant and the refrigerant, where FIG. 3A is the flow of the coolant and FIG. 3B is the flow of the refrigerant. The basic flow of the coolant and the refrigerant will be described with reference to FIG. Let the basic flow be the first embodiment of the flow. In the following figures, the flow of the coolant is indicated by the black arrow F1, and the flow of the refrigerant is indicated by the white arrow F2.

The coolant flows from the first coolant pipe 21a into the first lower tank 23b, flows through the plurality of coolant passages 70 arranged along the x-axis to the second lower tank 24b, and flows into the second lower tank 24b. It flows out from the cooling device 20 through 21b. The refrigerant flows from the second refrigerant pipe 22b into the second upper tank 24a, flows through the plurality of refrigerant passages 80 arranged along the x-axis to the first upper tank 23a, and passes through the first refrigerant pipe 22a. It flows out from the cooling device 20 to the outside. Although it has been described that the coolant and the refrigerant flow in the opposite directions in the first embodiment, they may flow in the same direction. Further, the overall flow of the coolant and the refrigerant may be reversed.

Since the coolant passages 70 and the refrigerant passages 80 are arranged alternately, heat exchange between the refrigerant and the coolant is reliably performed. Further, since heat exchange is performed via the inclined wall portion 60, the contact area between the refrigerant and the coolant is increased, and efficient heat exchange can be realized. Further, the alternating arrangement can keep the height of the cooling device 20 low, can be compact, and facilitates the arrangement of the secondary battery cells 11.

4A and 4B show an example of a coolant passage 70 and a refrigerant passage 80, where FIG. 4A is a perspective view of a battery temperature adjusting system, and FIG. 4B is a sectional view taken along the line (a). 5A and 5B are cross-sectional views taken along the line AA of FIG. 4A, where FIG. 5A is an angle definition, FIG. 5B is a distance definition, and FIG. 5C is an area definition. Based on FIGS. 4 and 5, the roles of the coolant and the refrigerant will be described in detail while defining the passage, the wall, the direction, the angle, the position, the distance, and the area along the y-axis of the cooling device 20.

One of the plurality of coolant passages 70 provided between the second surface 32 and the third surface 41 is defined as the first coolant passage 71. Further, the refrigerant passage 80 provided between the second surface 32 and the third surface 41 and adjacent to the first coolant passage 71 is defined as the first refrigerant passage 81. Similarly, the coolant passage 70 adjacent to the first refrigerant passage 81 is defined as the second coolant passage 72, and the refrigerant passage 80 adjacent to the second coolant passage 72 is defined as the second refrigerant passage 82.

The wall portion 60 connected to the second surface 32 and the third surface 41 and separating the first coolant passage 71 and the first refrigerant passage 81 is defined as the first wall portion 61. Similarly, the wall portion 60 connected to the second surface 32 and the third surface 41 and separating the first refrigerant passage 81 and the second coolant passage 72 is connected to the second wall portion 62, the second surface 32, and the third surface 41. The wall portion 60 that is connected and separates the second coolant passage 72 and the second refrigerant passage 82 is defined as the third wall portion 63.

The secondary battery cell 11 arranged inside the battery module 10 arranged on the first surface 31 of the first surface member 30 is cooled by the refrigerant and the coolant. In particular, the refrigerant plays a cooling function, but the cooling function by the refrigerant is a specific region due to heat exchange between the refrigerant and the coolant via the wall portion 60 constituting the coolant passage 70 and the refrigerant passage 80. It is possible to two-dimensionally equalize the uneven distribution of the temperature distribution due to the refrigerant with the coolant without concentrating on. That is, the first wall portion 61, the second wall portion 62, and the third wall portion 63 are arranged along a predetermined direction (x-axis in the present embodiment) parallel to the second surface 32, and the wall portions of these wall portions. The refrigerant and the coolant flowing between them can cool the battery module 10 in contact with at least the first surface 31.

Further, the first planar member 30, the first wall portion 61, the second wall portion 62, and the third wall portion 63 have a predetermined or higher thermal conductivity. The same applies to the second planar member 40 and the third planar member 50.

The heat conduction value is preferably 100 W / m · K or more.

The first planar member 30, the first wall portion 61, the second wall portion 62, and the third wall portion 63 are made of an aluminum alloy. The same applies to the second planar member 40 and the third planar member 50.

Further, the first planar member 30, the first wall portion 61, the second wall portion 62, the third wall portion 63, the second planar member 40, and the third planar member 50 are not limited to aluminum alloys, but copper. It may be alloy, stainless steel, titanium or the like.

Explaining the flow of the coolant and the refrigerant by the above definition, in the flow of the first embodiment, the direction in which the refrigerant flows in the first refrigerant passage 81 is opposite to the direction in which the coolant flows in the second coolant passage 72. The directions of the flow of the coolant and the refrigerant are opposite, but they are in the same direction. That is, the direction in which the coolant flows in the first coolant passage 71 is the same as the direction in which the coolant flows in the second coolant passage 72, and the direction in which the refrigerant flows in the first refrigerant passage 81 is the second refrigerant passage 82. Is the same as the direction in which the refrigerant flows. As a result, the coolant slightly warmed by the coolant pump exchanges heat with the refrigerant on the low temperature side to be sufficiently cooled, and while being continuously cooled by the refrigerant, it can flow while taking heat from the battery. ..

Further, the direction in which the refrigerant flows in the first refrigerant passage 81 may be the same as the direction in which the coolant flows in the second coolant passage 72. As a result, heat exchange between the refrigerant and the coolant can be maintained.

As shown in FIG. 5A, the wall portion 60 is inclined with respect to the second surface 32 and the third surface 41, but the wall portion 60 is determined in a predetermined direction with respect to the first virtual surface S1. It is slanted only by the angle. The predetermined direction of the first wall portion 61 is defined as the first direction T1, and the predetermined angle is defined as the first angle θ1. The direction of the second wall portion 62, which is opposite to the direction of the first wall portion 61, is defined as the second direction T2, and the predetermined angle is defined as the second angle θ2. The third wall portion 63 has the same first orientation T1 and first angle θ1 of the first wall portion 61.

The first angle θ1 is preferably between 40 and 60 degrees. Further, it is desirable that the second angle θ2 is between 40 degrees and 60 degrees. As a result, the area of contact between the refrigerant and the coolant is increased, heat exchange between the refrigerant and the coolant is promoted, the temperature uniformity of the cooling device 20 can be maintained, and the battery module 10 (or secondary) due to the thinning of the cooling device 20 can be maintained. The mountability of the battery cell 11) can be improved.

In FIG. 5B, a predetermined direction parallel to the second surface 32 (x-axis in the present embodiment) is defined as the first direction X1, and the direction perpendicular to the first direction X1 along the second surface 32 is defined. It is defined as the second direction Y1.

Regarding the second direction Y1, the line where the second surface 32 and the first wall portion 61 intersect is the first intersection line L1, and the line where the second surface 32 and the second wall portion 62 intersect is the second intersection line L2, the second. The line where the surface 32 and the third wall portion 63 intersect is defined as the third intersection line L3.

Further, in the second direction Y1, the line where the third surface 41 and the first wall portion 61 intersect is the fourth intersection line L4, and the line where the third surface 41 and the second wall portion 62 intersect is the fifth intersection line L5. The line where the third surface 41 and the third wall portion 63 intersect is defined as the sixth intersection line L6.

Then, the distance between the first crossing line L1 and the second crossing line L2 is the first distance D1, the distance between the second crossing line L2 and the third crossing line L3 is the second distance D2, and the fourth crossing line L4 and the fifth. The distance from the intersection line L5 is defined as the third distance D3, and the distance between the fifth intersection line L5 and the sixth intersection line L6 is defined as the fourth distance D4.

In the cooling device 20 of the present embodiment, the first distance D1 has a shorter relationship than the second distance D2 (D1 <D2). As a result, the width of the coolant passage 70 can be made larger than that of the refrigerant passage 80, the uneven distribution of the temperature distribution due to the refrigerant can be equalized by the coolant, and the cooling device 20 can be uniformly maintained at a predetermined temperature. ..

Further, in the cooling device 20, the first distance D1 is longer than the third distance D3 (D1> D3), and the second distance D2 is shorter than the fourth distance D4 (D2 <D4).

The relationship between the first distance D1 and the third distance D3 constituting the refrigerant passage 80 is that the secondary battery cell 11 side has a long inverted trapezoidal shape in cross section, and the refrigerant contact area on the secondary battery cell 11 side is increased in order to improve the cooling effect. It's getting bigger. Further, regarding the relationship between the second distance D2 and the fourth distance D4 constituting the coolant passage 70, the secondary battery cell 11 side has a short vertical cross-section trapezoidal shape, and the heat exchange rate with the refrigerant is increased.

In FIG. 5C, the first refrigerant passage 81 has a first cross-sectional area V1 on the second virtual surface S2 orthogonal to the second surface 32, and the second coolant passage 72 is the second virtual surface. S2 has a second cross-sectional area V2, and the first cross-sectional area V1 is smaller than the second cross-sectional area V2 (V1> V2). When comparing the cross-sectional areas of the second virtual surface S2, the flow rate of the coolant is made larger by making the second coolant passage 72 larger than the first refrigerant passage 81, and the amount of heat exchange with the refrigerant is increased. Is increasing.

FIG. 6 is a sectional view taken along the line AA of FIG. 4A showing a second embodiment of the cooling device 20. A second embodiment of the cooling device 20 will be described with reference to FIG.

The configuration different from the first embodiment in the second embodiment is that the reinforcing member 53 is provided between the second surface 32 and the third surface 41. Although the reinforcing member 53 connects the first plane portion 51 and the third surface 41, the second plane portion 52 and the second surface 32 may be connected, and the second surface 32 and the third surface 41 may be connected. May be directly connected. It is desirable that the reinforcing member 53 is provided in the coolant passage 70. Since the coolant passage 70 is formed larger than the refrigerant passage 80, the strength between the second surface 32 and the third surface 41 can be obtained.

Further, it is desirable that the reinforcing member 53 is provided inside at least one of the first coolant passage 71 and the second coolant passage 72. It is not necessary to provide the reinforcing member 53 in all the coolant passages 70, and it is sufficient that the strength of the cooling device 20 can be maintained. The reinforcing member 53 may be wall-shaped or columnar, and preferably has a structure in which a drag force is generated between the second surface 32 and the third surface 41.

7A and 7B show a third embodiment of the cooling device 20, where FIG. 7A is a front partial perspective view of the third planar member, FIG. 7B is a sectional view taken along the line AA of FIG. BB sectional view, (d) is a CC sectional view. A third embodiment of the cooling device 20 will be described with reference to FIG. 7. In FIGS. 7 (b) to 7 (d), the first planar member 30 and the second planar member 40 are shown by broken lines.

In the third embodiment, the configuration different from that of the first embodiment is that a plurality of through holes 54 are provided in the first plane portion 51 of the third planar member 50 in contact with the second surface 32 of the first planar member 30. It is that you are. The through hole 54 is formed in a region between the second wall portion 62 and the third wall portion 63 in contact with the first planar member 30, and the coolant in the second coolant passage 72 passes through the through hole 54. It is in contact with the first planar member 30. A plurality of through holes 54 may be provided along the direction in which the coolant flows, and may be provided corresponding to each coolant passage 70, and may be provided with the coolant passage 70 in which the through holes 54 are provided. There may be a coolant passage 70 that is not. As a result, the cooling liquid can come into direct contact with the first planar member 30, and the cooling effect is increased.

FIG. 8 is a block diagram of the battery temperature adjusting system 1. The block configuration of the battery temperature adjustment system 1 will be described with reference to FIG.

The battery temperature adjustment system 1 of this embodiment is a system that shares a battery temperature control device 100 that controls the temperature of the battery module 10 (or a secondary battery cell 11) and a vehicle air conditioning system (particularly a refrigerant circuit). The battery temperature control system 1 includes a battery temperature control device 100, a heater 101 and a pump 102 connected to the battery temperature control device 100 via a coolant circuit, and a first expansion valve (XV1) connected to the battery temperature control device. ) 103, an HVAC (Heating, Ventilation, and Air Conditioning) 104, a capacitor 105 connected to the HVAC 104, a compressor 106, and a second expansion valve 107. The battery module 10 and the secondary battery cell 11 are omitted.

The heater 101 is a water heater, a PTC heater, or the like, and the pump 102 is a water pressure feeding pump, an electric water pump, or the like. The first expansion valve 103 is an expansion valve for a vehicle air conditioner, and is a TXV (Thermal Expansion Valve) or an EXV (Electric Expansion Valve).

The heater 101 and the pump 102 are included in the coolant circuit, and the first expansion valve 103, the condenser 105, the compressor 106 and the second expansion valve 107 are included in the refrigerant circuit. Further, the HVAC 104, the condenser 105, the compressor 106 and the second expansion valve 107 form a refrigerant circuit of the vehicle air conditioning system.

In the refrigerant circuit, a refrigerant is supplied to the battery temperature control device 100, and the battery temperature control device 100 is cooled by the heat of vaporization of the refrigerant. The battery temperature control device 100 corresponds to the above-mentioned cooling device 20 when the battery is cooled. Further, the refrigerant circuit supplies the refrigerant to the HVAC 104, and the heat of vaporization of the refrigerant cools the air blown into the vehicle interior. In the refrigerant circuit, the compressor 106 pressurizes the vaporized refrigerant and supplies it to the capacitor 105. The condenser 105 cools and liquefies the refrigerant pressurized by the compressor 106, and supplies the refrigerant to the first expansion valve 103 or the second expansion valve 107.

When the refrigerant is supplied to the first expansion valve 103, the first expansion valve 103 decompresses the liquefied refrigerant and supplies it to the battery temperature control device 100. The supplied refrigerant is vaporized in the battery temperature control device 100. The vaporized refrigerant is supplied to the compressor 106 via the first expansion valve 103. When the refrigerant is supplied to the second expansion valve 107, the second expansion valve 107 decompresses the liquefied refrigerant and supplies it to the HVAC 104. The supplied refrigerant vaporizes in the HVAC 104. The vaporized refrigerant is supplied to the compressor 106 via the second expansion valve 107. Here, the first expansion valve 103 and the second expansion valve 107 are TXVs that are regulating valves that can control the flow rate of the refrigerant according to the refrigerant temperature.

In the coolant circuit, the coolant is supplied to the battery temperature control device 100, and when the battery is cooled, heat is exchanged between the refrigerant in the battery temperature control device 100 and the secondary battery cell 11 via the coolant to add the battery. When the temperature is high, heat is exchanged between the heated coolant in the battery temperature control device 100 and the secondary battery cell 11. In the coolant circuit, the pump 102 circulates the coolant in the coolant circuit. The heater 101 heats the coolant when the secondary battery cell 11 charges at a low temperature or supplies electric power to the drive motor.

9 shows an example of Example 2 of the flow of the coolant and the refrigerant of FIG. 3, (a) is a front perspective view explaining the flow, (b) is a schematic view of the flow, and (c) is (a). A is a simplified cross-sectional view of AA, and (d) is a simplified cross-sectional view of BB of (a). 10A and 10B show an example of Example 3 of the flow of the coolant and the refrigerant of FIG. 3, where FIG. 10A is a front perspective view illustrating the flow, FIG. 10B is a schematic view of the flow, and FIG. 10C is FIG. A is a simplified cross-sectional view of AA, and (d) is a simplified cross-sectional view of BB of (a). Examples 2 and 3 of the flow of the coolant and the refrigerant will be described with reference to FIGS. 9 and 10.

FIG. 9 is a second embodiment of the flow of the coolant and the refrigerant, and the coolant will be mainly described.

In the first embodiment shown in FIG. 3A, the coolant flows from the first lower tank 23b to the second lower tank 24b through the coolant passage 70, and has a flow in the same direction in the coolant passage 70. is doing. On the other hand, in the second embodiment, the coolant flows to the other end of the second lower tank 24b on the opposite side where the second coolant pipe 21b is provided, and flows through the first coolant passage 71 to the first lower tank 23b. , Fold back at the first lower tank 23b. Then, it passes through the adjacent second coolant passage 72, flows to the second lower tank 24b, and forms a repeated flow of turning back again. After the repeated flow, the coolant flows out from the first coolant pipe 21a.

That is, based on the definition of the coolant passage 70, in the first embodiment, the direction in which the coolant flows in the first coolant passage 71 and the direction in which the coolant flows in the second coolant passage 72 are the same. On the other hand, in the second embodiment, the direction in which the coolant flows in the first coolant passage 71 is opposite to the direction in which the coolant flows in the second coolant passage 72. Although the coolant has been described in the embodiment, the flow of the refrigerant is the same, and the direction in which the refrigerant flows in the first refrigerant passage 81 is opposite to the direction in which the refrigerant flows in the second refrigerant passage 82. Although the first embodiment shows an example in which the inlet of the coolant is the first coolant pipe 21a and the outlet is the second coolant pipe 21b, the relationship between the inlet and the outlet may be reversed, and the second cooling The liquid pipe 21b may be an inlet and the first coolant pipe 21a may be an outlet. Similarly, in the second embodiment, an example is shown in which the inlet of the coolant is the second coolant pipe 21b and the outlet is the first coolant pipe 21a, but the relationship between the inlet and the outlet may be reversed, and the first The coolant pipe 21a may be an inlet and the second coolant pipe 21b may be an outlet.

FIG. 10 is a third embodiment of the flow of the coolant and the refrigerant, and the refrigerant will be mainly described.

In the first embodiment, the first refrigerant pipe 22a and the second refrigerant pipe 22b are installed on opposite sides via the refrigerant passage 80, but in the third embodiment, they are installed on the same side. Of the plurality of refrigerant passages 80, the refrigerant flows from the second tank 24 to the first tank 23 through half of the refrigerant passages 80, flows to the second tank 24 through the other half of the refrigerant passages 80, and is second. It flows out from the refrigerant pipe 22b to the outside.

Based on the definition of the refrigerant passage 80, for example, the directions in which the refrigerant flows in the first refrigerant passage 81 and the second refrigerant passage 82 are the same, but the directions of the refrigerant flowing in the third refrigerant passage 83 and the fourth refrigerant passage 84. Is opposite to the direction of the first refrigerant passage 81 and the second refrigerant passage 82.

Although the flow of the refrigerant has been described, the flow of the coolant may be the same as in the third embodiment. Further, the flow of the coolant and the refrigerant has various patterns and can be selected depending on the size and shape of the battery module 10 (or the secondary battery cell 11) to be cooled.

11A and 11B show a fourth embodiment of the cooling device 20, where FIG. 11A is a front perspective view, FIG. 11B is a simplified sectional view taken along the line AA of FIG. 11A, and FIG. 11C is a sectional view taken along the line BB of FIG. It is a simplified diagram. 12A and 12B show an example of assembling the cooling device 20, where FIG. 12A is a schematic assembly diagram of a tank, and FIG. 12B is a schematic diagram of joining with a tank. A fourth embodiment will be described with reference to FIGS. 11 and 12.

It has been explained that the first planar member 30, the second planar member 40, and the third planar member 50 are separate bodies, but in the fourth embodiment, the three planar members 30, 40, and 50 are integrated. It is molded. The integral molding is performed, for example, by extruding a metal, but resin molding using a resin having a high thermal conductivity may also be used. Further, in the case of processing with an extruded material, at least the first planar member 30, the second planar member 40, the first wall portion 61, the second wall portion 62, and the third wall portion 63 are integrally molded. In the integral molding, the first flat surface portion 51 of the third planar member 50 is integrated with the second surface 32 of the first planar member 30, and the second flat surface portion 52 is integrated with the third surface 41 of the second planar member 40. Integrate.

The integrally molded coolant passage 70 and the refrigerant passage 80 form one housing 25 and are joined to the tanks 23 and 24. The upper tanks 23a and 24a are joined to the refrigerant passage 80, and the lower tanks 23b and 24b are joined to the coolant passage 70.

The first tank 23 and the second tank 24 were formed by the planar members 30, 40, and 50, but in the case of integral molding, they are formed independently. The first upper tank 23a is fixed to the first surface 31 of the first planar member 30, and the first upper tank 23a and the refrigerant passage 80 pass through an opening 33 opened to the side of the first planar member 30. (See FIG. 11 (b)). The first lower tank 23b is fixed to the side wall 34 connecting the first planar member 30 and the second planar member 40, and the first lower tank 23b and the coolant passage pass through the opening 35 opened in the side wall 34. 70 communicates (see FIG. 11 (c)). In this embodiment, the connection on the first tank 23 side is shown, but the connection on the second tank 24 side is also the same.

The outer frame 26 and the inner frame 27 having a plurality of openings 33 forming a passage are joined to form a first upper tank 23a (see FIG. 12A). The first lower tank 23b and the second tank 24 can be formed in the same manner. The formed first upper tank 23a is joined to the integrally molded housing 25. The first lower tank 23b is also joined to the housing 25 (see FIG. 12B). The second tank 24 side described for the first tank 23 side can be assembled in the same manner. Although the joining of the tanks 23 and 24 and the passages 70 and 80 in the integral molding has been described, it is possible to form the tanks 23 and 24 independently and perform the same bonding in the embodiment not integrally molded.

13 shows a fifth embodiment of the cooling device 20, where FIG. 13A is a front perspective view and FIG. 13B is an exploded perspective view. 14A and 14B show a coolant passage 70 and a refrigerant passage 80 according to a fifth embodiment, FIG. 14A is a partial perspective view, and FIG. 14B is an enlarged view of part A of FIG. 14A. 15 shows a coolant passage 70 and a refrigerant passage 80 as in FIG. 14, FIG. 15A is a front perspective view of the cooling device 20, and FIG. 15B is a sectional perspective view taken along the line AA of FIG. ) Is a sectional perspective view taken along the line BB of (a). A fifth embodiment of the cooling device 20 will be described with reference to FIGS. 13 to 15.

The cooling device 20 of the fifth embodiment includes a top plate 200, a middle plate 210, and a bottom plate 220. The top plate 200 constitutes at least the first planar member 30, and the middle plate 210 is formed by bending a single plate to form at least the third planar member 50 and the first wall portion 61. The second wall portion 62 and the third wall portion 63 are formed, and the bottom plate 220 constitutes at least the second planar member 40.

Taking the third embodiment of FIG. 7 as an example, the middle plate 210 includes a region in contact with the top plate 200 between the second wall portion 62 and the third wall portion 63, and the middle plate 210 penetrates in the region. It can be explained that the cooling liquid of the second cooling liquid passage 72 provided with the hole 54 is in contact with the top plate 200 through the through hole 54.

The top plate 200 includes a top plate main body 201 that exhibits a flat shape, a top plate standing wall 202 that rises upward on both sides, and a top plate flat plate portion 203 that further protrudes outward. The middle plate 210 includes a middle plate main body 211 that exhibits a flat shape, a middle plate standing wall 212 that rises upward on both sides, and a middle plate flat plate portion 213 that further protrudes outward. The bottom plate 220 includes a bottom plate main body 221 that exhibits a flat shape, a bottom plate standing wall 222 that rises upward on both sides, and a bottom plate flat plate portion 223 that further protrudes outward.

The coolant passage 70 and the refrigerant passage 80 are formed of a top plate main body 201, a middle plate main body 211, and a bottom plate main body 221. It is formed. The boundary between the coolant and the refrigerant can be formed by interposing the middle plate standing wall 212 between the top plate standing wall 202 and the bottom plate standing wall 222.

16A and 16B show that the cooling device 20 of the fifth embodiment is applied to the battery temperature adjusting system 1, where FIG. 16A is a front perspective view, FIG. 16B is a sectional view taken along the line AA of FIG. Is a cross-sectional view taken along the line BB of (a).

The cooling device 20 including the top plate 200, the middle plate 210, and the bottom plate 220 mounts a plurality of battery modules 10 on the top plate 200. As a result, the cooling device 20 can cool the secondary battery cell 11 arranged inside the battery module 10. Further, the cooling device 20 is provided with a coolant passage 70 and a refrigerant passage 80 for cooling the secondary battery cell 11.

17 shows a sixth embodiment of the cooling device 20, where FIG. 17A is a front perspective view of the cooling device 20, FIG. 17B is a simplified view of the AA cross section of the refrigerant passage 80 (a), and FIG. A simplified view of the BB section of the refrigerant passage 80 (a), (d) a simplified view of the CC section of the coolant passage 70 (a), and (e) a simplified view of the coolant passage 70 (a) D-. D is a simplified cross-sectional view.

As the flow of the coolant and the refrigerant, it is possible to adopt Examples 1 to 3 of the flow. In the second tank 24 in the flow of the refrigerant of the third embodiment, the refrigerant passage for the opposite flow in the second tank 24 can be easily provided by providing the top plate cut portion 204 on the top plate 200 (the second tank 24). See FIG. 17 (b)). Further, in the second tank 24 in the flow of the coolant of the second embodiment, the bottom plate 220 is provided with the bottom plate cut portion 224, so that the coolant passage for the opposite flow in the second tank 24 can be easily provided. Yes (see FIG. 17 (d)).

18 shows a seventh embodiment of the cooling device 20, where FIG. 18A is a simplified cross-sectional view taken along the line AA of FIG. 16A, and FIG. 18B is a simplified cross-sectional view taken along the line BB of FIG. 16A. ..

The seventh embodiment is a cooling device 20 in which the tanks 23 and 24 are independently formed, and has the same configuration as the fourth embodiment. The first upper tank 23a is fixed to the upper surface of the top plate 200, and the first upper tank 23a and the refrigerant passage 80 communicate with each other through an opening 33 opened to the side of the top plate 200 (FIG. 18 (FIG. 18). a) See). The first lower tank 23b is fixed to the side wall 34 connecting the top plate 200 and the bottom plate 220, and the first lower tank 23b and the coolant passage 70 communicate with each other through the opening 35 opened in the side wall 34 (the first lower tank 23b and the coolant passage 70 communicate with each other. See FIG. 11 (b)). Further, the heights of the first upper tank 23a and the first lower tank 23b are the same. When the top plate 200, the middle plate 210 and the bottom plate 220 are integrally molded as in the fourth embodiment, it is preferable to apply the tank 23, 24 structures of the seventh embodiment.

19A and 19B are schematic views illustrating a state in which the cooling device 20 of the present embodiment is mounted on a vehicle, where FIG. 19A is a side view of the vehicle and FIG. 19B is a rear view of the vehicle.

The vehicle 300 equipped with the battery temperature adjusting system 1 includes wheels 301 that rotate along the traveling direction U, a vehicle interior 302, and a floor surface 303 of the vehicle interior 302.

In FIG. 19A, the first planar member 30 and the second planar member 40 of the cooling device 20 are arranged along the floor surface 303 of the vehicle interior 302, and the first wall portion 61 and the second of the cooling device 20 are arranged. The wall portion 62 and the third wall portion 63 are arranged along the traveling direction V. As a result, by fixing the cooling device 20 so as to be integrated with the vehicle body of the vehicle 300, the first wall portion 61, the second wall portion 62, the third wall portion 63, etc. are arranged along the traveling direction U. The rigidity of the battery pack improves the rigidity of the battery pack, which can contribute to the improvement of the rigidity of the vehicle body in the traveling direction U.

In FIG. 19B, the first planar member 30 and the second planar member 40 of the cooling device 20 are arranged along the floor surface 303 of the vehicle interior 302, and the first wall portion 61 and the second of the cooling device 20 are arranged. The wall portion 62 and the third wall portion 63 are arranged along the traveling direction U and the orthogonal direction W. As a result, by fixing the cooling device 20 so as to be integrated with the vehicle body of the vehicle 300, the first wall portion 61, the second wall portion 62, and the second wall portion 62 are arranged along the direction W orthogonal to the traveling direction U. The rigidity of the three wall portions 63 and the like improves the rigidity of the battery pack, which can contribute to the improvement of the rigidity of the vehicle body in the orthogonal direction W.

Although the cooling device, the battery temperature adjusting system, and the embodiment of the vehicle according to the present disclosure have been described above with reference to the drawings, the present disclosure is not limited to such an example. It is clear that a person skilled in the art can come up with various modifications, modifications, substitutions, additions, deletions, and even examples within the scope of the claims. It is naturally understood that it belongs to the technical scope of the present disclosure.

The cooling device, battery temperature control system and vehicle of the present disclosure are useful in a field where it is desired to maintain the temperature uniformity of the cooling device and improve the mountability of the secondary battery cell by reducing the thickness.

1: Battery temperature adjustment system (vehicle-mounted battery pack)
10: Battery module 11: Secondary battery cell 20: Cooling device 23: First tank 24: Second tank 30: First planar member 31: First surface 32: Second surface 40: Second planar member 41: Third surface 42: Fourth surface 50: Third surface member 51: First plane portion 52: Second plane portion 53: Reinforcing member 54: Through hole 60: Wall portion 61: First wall portion 62: Second wall Part 63: Third wall part 70: Coolant passage 71: First coolant passage 72: Second coolant passage 80: Refrigerant passage 81: First refrigerant passage 82: Second refrigerant passage 83: Third refrigerant passage 84: 4th refrigerant passage 100: Battery temperature control device 104: HVAC
200: Top plate 210: Middle plate 220: Bottom plate 300: Vehicle 301: Wheel 302: Vehicle interior 303: Floor surface D1: First distance D2: Second distance D3: Third distance D4: Fourth distance L1: First intersection Line L2: 2nd crossing line L3: 3rd crossing line L4: 4th crossing line L5: 5th crossing line L6: 6th crossing line S1: 1st virtual plane S2: 2nd virtual plane T1: 1st Direction T2: Second direction V1: First cross-sectional area V2: Second cross-sectional area Y1: Second direction X1: First direction θ1: First angle (predetermined angle)
θ2: Second angle (predetermined angle)

Claims (23)

A first surface, a first surface-shaped member having a second surface opposite to the first surface, and
A third surface facing the second surface, and a second surface-shaped member having a fourth surface opposite to the third surface.
A first coolant passage provided between the second surface and the third surface and through which the coolant flows,
A first refrigerant passage provided between the second surface and the third surface, adjacent to the first coolant passage, and flowing a refrigerant.
A second coolant passage provided between the second surface and the third surface, adjacent to the first refrigerant passage, and through which the coolant flows.
A second refrigerant passage provided between the second surface and the third surface, adjacent to the second coolant passage, and through which the refrigerant flows.
A first wall portion connected to the second surface and the third surface and separating the first coolant passage and the first refrigerant passage.
A second wall portion connected to the second surface and the third surface and separating the first refrigerant passage and the second coolant passage,
At least a third wall portion connected to the second surface and the third surface and separating the second coolant passage and the second refrigerant passage is provided.
The first wall portion, the second wall portion, and the third wall portion are arranged along a predetermined direction parallel to the second surface.
The predetermined direction is set as the first direction.
In the second direction perpendicular to the first direction along the second surface, the first crossing line where the second surface and the first wall portion intersect, and the second surface and the second wall portion intersect. The first distance to the second crossing line is
In the second direction, it is shorter than the second distance between the second intersection line where the second surface and the second wall portion intersect and the third intersection line where the second surface and the third wall portion intersect. ,
It is possible to cool at least a plurality of secondary battery cells arranged along the first surface.
Cooling system. A first surface, a first surface-shaped member having a second surface opposite to the first surface, and
A third surface facing the second surface, and a second surface-shaped member having a fourth surface opposite to the third surface.
A first coolant passage provided between the second surface and the third surface and through which the coolant flows,
A first refrigerant passage provided between the second surface and the third surface, adjacent to the first coolant passage, and flowing a refrigerant.
A second coolant passage provided between the second surface and the third surface, adjacent to the first refrigerant passage, and through which the coolant flows.
A second refrigerant passage provided between the second surface and the third surface, adjacent to the second coolant passage, and through which the refrigerant flows.
A first wall portion connected to the second surface and the third surface and separating the first coolant passage and the first refrigerant passage.
A second wall portion connected to the second surface and the third surface and separating the first refrigerant passage and the second coolant passage,
At least a third wall portion connected to the second surface and the third surface and separating the second coolant passage and the second refrigerant passage is provided.
The first wall portion, the second wall portion, and the third wall portion are arranged along a predetermined direction parallel to the second surface.
The first refrigerant passage has a first cross-sectional area in a second virtual plane orthogonal to the second plane and virtually defined to intersect the predetermined direction.
The second coolant passage has a second cross-sectional area in the second virtual surface.
The first cross-sectional area is smaller than the second cross-sectional area.
It is possible to cool at least a plurality of secondary battery cells arranged along the first surface.
Cooling system. A first surface, a first surface-shaped member having a second surface opposite to the first surface, and
A third surface facing the second surface, and a second surface-shaped member having a fourth surface opposite to the third surface.
A first coolant passage provided between the second surface and the third surface and through which the coolant flows,
A first refrigerant passage provided between the second surface and the third surface, adjacent to the first coolant passage, and flowing a refrigerant.
A second coolant passage provided between the second surface and the third surface, adjacent to the first refrigerant passage, and through which the coolant flows.
A second refrigerant passage provided between the second surface and the third surface, adjacent to the second coolant passage, and through which the refrigerant flows.
A first wall portion connected to the second surface and the third surface and separating the first coolant passage and the first refrigerant passage.
A second wall portion connected to the second surface and the third surface and separating the first refrigerant passage and the second coolant passage,
At least a third wall portion connected to the second surface and the third surface and separating the second coolant passage and the second refrigerant passage is provided.
The first wall portion, the second wall portion, and the third wall portion are cooling devices arranged along a predetermined direction parallel to the second surface.
At least the top plate constituting the first planar member and
At least the first wall portion, the second wall portion, and the middle plate constituting the third wall portion.
At least a bottom plate constituting the second planar member is provided.
In the middle plate, at least the first wall portion, the second wall portion, and the third wall portion are formed from one plate.
The middle plate includes a region in contact with the top plate between the second wall portion and the third wall portion.
The middle plate has through holes in the area and
The coolant in the second coolant passage passes through the through hole and comes into contact with the top plate.
It is possible to cool at least a plurality of secondary battery cells arranged along the first surface.
Cooling system. The cooling device according to any one of claims 1 to 3 .
At least the first planar member, the first wall portion, the second wall portion, and the third wall portion have a predetermined or higher thermal conductivity.
Cooling system. The cooling device according to claim 4 .
At least the first planar member, the first wall portion, the second wall portion, and the third wall portion are made of an aluminum alloy.
Cooling system. The cooling device according to any one of claims 1 to 5 .
At least the first wall portion and the third wall portion are predetermined in a predetermined direction with respect to a first virtual surface orthogonal to the second surface and virtually defined along the predetermined direction. Is slanted by the angle of
Cooling system. The cooling device according to claim 6 .
The predetermined angle is between 40 and 60 degrees.
Cooling system. The cooling device according to claim 6 or 7 .
The predetermined orientation is set as the first orientation.
The predetermined angle is set as the first angle.
The second wall portion is inclined by a second angle in a second direction opposite to the first direction with respect to the first virtual surface.
Cooling system. The cooling device according to claim 8 .
The second angle is between 40 and 60 degrees.
Cooling system. The cooling device according to any one of claims 1 to 9 .
The predetermined direction is set as the first direction.
In the second direction perpendicular to the first direction along the second surface, the first crossing line where the second surface and the first wall portion intersect, and the second surface and the second wall portion intersect. The first distance to the second crossing line is
In the second direction, it is longer than the third distance between the fourth intersection line where the third surface and the first wall portion intersect and the fifth intersection line where the third surface and the second wall portion intersect. ,
Cooling system. The cooling device according to any one of claims 1 to 10 .
The predetermined direction is set as the first direction.
In the second direction perpendicular to the first direction along the second surface, the second intersection line where the second surface and the second wall portion intersect, and the second surface and the third wall portion intersect. The second distance to the third crossing line is
The second direction is shorter than the fourth distance between the fifth intersection line where the third surface and the second wall portion intersect and the sixth intersection line where the third surface and the third wall portion intersect. ,
Cooling system. The cooling device according to any one of claims 1 to 11.
A reinforcing member connecting the second surface and the third surface is provided inside at least one of the first coolant passage and the second coolant passage.
Cooling system. The cooling device according to any one of claims 1 to 12.
The direction in which the coolant flows in the first coolant passage is
It is the same as the direction in which the coolant flows in the second coolant passage.
Cooling system. The cooling device according to any one of claims 1 to 12.
The direction in which the coolant flows in the first coolant passage is
It is opposite to the direction in which the coolant flows in the second coolant passage.
Cooling system. The cooling device according to any one of claims 1 to 14.
The direction in which the refrigerant flows in the first refrigerant passage is
The direction in which the refrigerant flows in the second refrigerant passage is the same.
Cooling system. The cooling device according to any one of claims 1 to 14.
The direction in which the refrigerant flows in the first refrigerant passage is
The direction in which the refrigerant flows in the second refrigerant passage is opposite to that of the flow.
Cooling system. The cooling device according to any one of claims 1 to 16.
The direction in which the refrigerant flows in the first refrigerant passage is
It is the same as the direction in which the coolant flows in the second coolant passage.
Cooling system. The cooling device according to any one of claims 1 to 16.
The direction in which the refrigerant flows in the first refrigerant passage is
It is opposite to the direction in which the coolant flows in the second coolant passage.
Cooling system. The cooling device according to claim 1 or 2 .
At least, the first planar member, the second planar member, the first wall portion, the second wall portion, and the third wall portion are
Integrally molded with extruded material,
Cooling system. The cooling device according to any one of claims 1 to 19 .
A plurality of secondary battery cells arranged along the first surface of the cooling device, and
To prepare
Battery temperature control system. The battery temperature adjusting system according to claim 20.
The plurality of secondary battery cells constitute a battery module.
Battery temperature control system. The cooling device according to any one of claims 1 to 19 .
Wheels that rotate along the direction of travel,
A vehicle equipped with a passenger compartment
The first planar member and the second planar member of the cooling device are arranged along the floor surface of the passenger compartment.
The first wall portion, the second wall portion, and the third wall portion of the cooling device are arranged along the traveling direction.
vehicle. The cooling device according to any one of claims 1 to 19 .
Wheels that rotate along the direction of travel,
A vehicle equipped with a passenger compartment
The first planar member and the second planar member of the cooling device are arranged along the floor surface of the passenger compartment.
The first wall portion, the second wall portion, and the third wall portion of the cooling device are arranged along the direction orthogonal to the traveling direction.
vehicle.

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