JP2022127457A - Vehicle and heat exchange plate - Google Patents

Abstract

To provide a heat exchange plate which can be produced at reasonable cost and enables proper adjustment of a temperature of an on-vehicle battery.SOLUTION: A heat exchange plate includes a first planer member, a second planar member, and a third planar member disposed along a predetermined surface, has a coolant layer which circulates a coolant between the first planar member and the second planar member, a refrigerant layer which circulates a refrigerant between the second planar member and the third planar member, and a wall part forming at least a part of a passage of the coolant in the coolant layer. At least a part of the second planar member is disposed between the first planer member and the third planar member. At least a part of the wall part of the coolant layer comprises: first protruding parts protruding from the first planar member to the second planar member; and second protruding parts protruding from the second planar member to the first planar member.SELECTED DRAWING: Figure 5B

Description

The present disclosure relates to vehicles and heat exchange plates.

A hybrid vehicle and an electric vehicle are equipped with an on-vehicle battery that supplies electric power to a motor that is a drive source. A hybrid type heat exchange plate is known that simultaneously supplies both a refrigerant and a cooling liquid in order to suppress the temperature rise of an on-vehicle battery.

In addition, in Patent Document 1, in order to reduce the number of parts of a multi-layer heat exchange plate, press working is used to create a flow path for a cooling medium. It is disclosed to align a third plate, use the second plate as a flat plate, and press the first and third plates to create the flow channels.

Chinese Patent Application Publication No. 107112612

However, in the method disclosed in Patent Literature 1, the first plate is press-formed to match the shape of the flow path, so that the vehicle-mounted battery placed on the first plate does not adhere to the surface of the first plate. It is difficult to adjust the temperature of the on-board battery properly.

An object of the present disclosure is to provide a heat exchange plate that can be produced at a reasonable cost and that can appropriately adjust the temperature of an on-vehicle battery, and a vehicle equipped with the heat exchange plate.

A vehicle according to one aspect of the present disclosure includes:
a vehicle body;
a first wheel and a second wheel coupled to the vehicle body;
a battery module group having a plurality of battery modules arranged along a predetermined plane in the vehicle body;
a heat exchange plate arranged along the predetermined surface in the vehicle body;
a motor that drives at least the first wheel using electric power supplied from the battery module group,
The heat exchange plate is
a first planar member arranged along the predetermined plane;
a second planar member arranged along the predetermined plane;
a third planar member arranged along the predetermined plane,
at least part of the second planar member is disposed between the first planar member and the third planar member;
The battery module group is arranged at a position opposite to the second planar member with respect to the first planar member,
The heat exchange plate further includes a cooling liquid layer for circulating a cooling liquid between the first planar member and the second planar member;
a coolant layer for circulating a coolant between the second planar member and the third planar member;
a wall portion forming at least part of a flow path for the cooling liquid in the cooling liquid layer;
At least a part of the wall portion of the cooling liquid layer includes a first convex portion protruding from the first planar member toward the second planar member, and and a second projection projecting toward the member.

A heat exchange plate according to one aspect of the present disclosure includes:
a vehicle body;
a first wheel and a second wheel coupled to the vehicle body;
a battery module group having a plurality of battery modules arranged along a predetermined plane in the vehicle body;
a heat exchange plate that can be installed in a vehicle, comprising: an electric motor that drives at least the first wheel using electric power supplied from the battery module group;
In the vehicle body, it can be arranged along the predetermined surface,
a first planar member arranged along the predetermined plane;
a second planar member arranged along the predetermined plane;
a third planar member arranged along the predetermined plane,
a cooling liquid layer for circulating a cooling liquid between the first planar member and the second planar member;
a coolant layer for circulating a coolant between the second planar member and the third planar member;
a wall portion forming at least a part of a flow path of the cooling liquid in the cooling liquid layer;
has
at least part of the second planar member is disposed between the first planar member and the third planar member;
At least a part of the wall portion of the cooling liquid layer includes a first convex portion protruding from the first planar member toward the second planar member, and and a second projection projecting toward the member.

Advantageous Effects of Invention According to the present disclosure, it is possible to provide a heat exchange plate that can be produced at a reasonable cost and that can appropriately adjust the temperature of an in-vehicle battery, and a vehicle equipped with the heat exchange plate.

1 is a plan view showing a configuration example of a vehicle according to Embodiment 1. FIG. 1 is a left side view showing a configuration example of a vehicle according to Embodiment 1; FIG. 1 is a diagram for explaining an example of an electric circuit included in a vehicle according to Embodiment 1; 1 is a perspective view showing a configuration example of a battery pack according to Embodiment 1; FIG. AA sectional view of the battery pack shown in FIG. 3A BB cross-sectional view of the battery pack shown in FIG. 3A 1 is a plan view showing a configuration example of a heat exchange plate according to Embodiment 1. FIG. 1 is a perspective view showing a first configuration example of a heat exchange plate according to Embodiment 1; FIG. A perspective view of the AA cross section of the heat exchange plate shown in FIG. 5A The perspective view showing the second configuration example of the heat exchange plate according to the first embodiment. A perspective view of the AA cross section of the heat exchange plate shown in FIG. 6A Sectional perspective view showing the configuration of a heat exchange plate for comparison Schematic diagram showing a modification of the heat exchange plate according to Embodiment 1

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter of the claims.

(Embodiment 1)
<Vehicle configuration>
FIG. 1A is a plan view showing a configuration example of vehicle 1 according to Embodiment 1. FIG. FIG. 1B is a left side view showing a configuration example of vehicle 1 according to Embodiment 1. FIG.

For convenience of explanation, as shown in FIG. 1, the axis extending in the height direction of the vehicle 1 is defined as the Z-axis. An axis that is perpendicular to the Z axis (that is, parallel to the ground) and extends in the traveling direction of the vehicle 1 is the Y axis. An axis perpendicular to the Y-axis and the Z-axis (that is, the axis in the width direction of the vehicle 1) is defined as the X-axis. For convenience of explanation, the positive direction of the Z-axis is "up", the negative direction of the Z-axis is "down", the positive direction of the Y-axis is "forward", the negative direction of the Y-axis is "back", and the positive direction of the X-axis is The direction may be referred to as "right" and the negative direction of the X-axis as "left". These expressions are the same for other drawings describing the XYZ axes. It should be noted that these directions are used for convenience of explanation, and are not intended to limit the attitude of the structure in actual use.

A vehicle 1 includes a vehicle body 2 , wheels 3 , an electric motor 4 , and a battery pack 10 .

Battery pack 10 is housed in vehicle body 2 . The battery pack 10 has a plurality of chargeable/dischargeable battery modules 30 (see FIG. 3A). The plurality of battery modules 30 included in the battery pack 10 are hereinafter referred to as a battery module group 31 . An example of the battery module 30 is a lithium ion battery. The battery module group 31 supplies (discharges) the accumulated electric power to the electric motor 4 and the like. The battery module group 31 may store (charge) the electric power generated by the electric motor 4 by regenerative energy. The battery pack 10 may be housed under the floor in the center of the vehicle body 2, as shown in FIG. Details of the battery pack 10 will be described later.

Wheels 3 are coupled to vehicle body 2 . Although FIGS. 1A and 1B show the vehicle 1 having four wheels 3, the vehicle 1 may have at least one wheel 3. FIG. For example, the vehicle 1 may be a motorcycle with two wheels 3 or a vehicle with three or more than five wheels 3 . One of the plurality of wheels 3 provided in the vehicle 1 may be referred to as a first wheel 3a, and one of the plurality of wheels 3 other than the first wheel 3a may be referred to as a second wheel 3b. The first wheel 3 a may be the front wheel of the vehicle 1 and the second wheel 3 b may be the rear wheel of the vehicle 1 . The vehicle 1 can move in a predetermined direction (for example, the front-rear direction) by the first wheels 3a and the second wheels 3b.

The electric motor 4 uses power supplied from the battery module group 31 to drive at least one wheel 3 (for example, the first wheel 3a). Vehicle 1 comprises at least one electric motor 4 . The vehicle 1 may have a configuration in which the electric motor 4 drives the front wheels (that is, front-wheel drive). Alternatively, the vehicle 1 may have a configuration in which the electric motor 4 drives the rear wheels (that is, rear-wheel drive), or a configuration in which the electric motor 4 drives both front and rear wheels (that is, four-wheel drive). Alternatively, the vehicle 1 may include a plurality of electric motors 4 , and each of the plurality of electric motors 4 may individually drive the wheels 3 . The electric motor 4 may be installed in a motor room (engine room) located in front of the vehicle 1 .

<Configuration of electric circuit>
FIG. 2 is a diagram for explaining an example of an electric circuit included in vehicle 1 according to Embodiment 1. As shown in FIG.

A battery pack 10 including a battery module group 31 has a high voltage connector and a low voltage connector. In this disclosure, high voltage connectors and low voltage connectors are interchangeably referred to as electrical connectors.

A high voltage distributor may be connected to the high voltage connector. A drive inverter, a compressor, an HVAC (Heating, Ventilation, and Air Conditioning), an onboard charger, and a quick charge port may be connected to the high voltage distributor. A CAN (Controller Area Network) and a 12V power supply system may be connected to the low voltage connector.

An electric motor 4 may be connected to the drive inverter. That is, the electric power output from the battery module group 31 may be supplied to the electric motor 4 through the high voltage connector, the high voltage distributor, and the drive inverter.

<Configuration of battery pack>
FIG. 3A is a perspective view showing a configuration example of battery pack 10 according to Embodiment 1. FIG. FIG. 3B is a cross-sectional view of the battery pack 10 shown in FIG. 3A along the line AA. FIG. 3C is a BB cross-sectional view of the battery pack shown in FIG. 3A.

Battery pack 10 includes housing 20 , battery module group 31 , and heat exchange plate 100 . The housing 20 accommodates the battery module group 31 and the heat exchange plate 100 .

The heat exchange plate 100 has, for example, a flat, substantially rectangular parallelepiped shape. The heat exchange plate 100 may be read as a heat exchanger. As shown in FIGS. 3B and 3C, the heat exchange plate 100 includes a first planar member 101 arranged along a predetermined plane, a second planar member 102 arranged along a predetermined plane, and a third planar member 103 arranged along a predetermined plane. The predetermined surface may be the floor surface of the vehicle body 2 . The first planar member 101, the second planar member 102, and the third planar member 103 may be made of metal, such as aluminum. However, the first planar member 101, the second planar member 102, and the third planar member 103 are not limited to being made of metal, and may be made of other materials.

At least part of the second planar member 102 is arranged between the first planar member 101 and the third planar member 103 . The battery module group 31 is arranged at a position opposite to the second planar member 102 with the first planar member 101 as a reference. That is, the third planar member 103 , the second planar member 102 , and the first planar member 101 are arranged in order from the floor surface of the vehicle body 2 .

The heat exchange plate 100 includes a cooling liquid layer 200 that circulates the cooling liquid between the first planar member 101 and the second planar member 102, and a coolant layer 200 between the second planar member 102 and the third planar member 103. and a refrigerant layer 300 that circulates the The heat exchange plate 100 exchanges heat between at least the battery module group 31 and the coolant via the first planar member 101 . Also, the heat exchange plate 100 exchanges heat between at least the coolant in the coolant layer 200 and the coolant in the coolant layer 300 via the second planar member 102 . Examples of coolants include antifreeze containing ethylene glycol. Examples of refrigerants include HFC (Hydrofluorocarbon).

In the present embodiment, the heat exchange plate 100 has a structure in which the cooling liquid layer 200 is arranged on the refrigerant layer 300 . However, the heat exchange plate 100 may have a configuration in which the coolant layer 300 is arranged on the coolant layer 200 . The coolant layer 200 may be read as a coolant plate. The coolant layer 300 may be read as a coolant plate. The details of the configuration of the heat exchange plate 100 and the details of the configurations of the coolant layer 200 and the refrigerant layer 300 will be described later.

The heat exchange plate 100 has a coolant input portion 121 , a coolant output portion 122 , a coolant input portion 131 , and a coolant output portion 132 on a front surface 110</b>F, which is a surface on the traveling direction side of the vehicle 1 .

The cooling liquid input part 121 is an inlet for inputting the cooling liquid from the outside of the heat exchange plate 100 to the cooling liquid layer 200 . The coolant output section 122 is an outlet for outputting the coolant from the coolant layer 200 to the outside of the heat exchange plate 100 .

The coolant input part 131 is an inlet for inputting coolant from the outside of the heat exchange plate 100 to the coolant layer 300 . The coolant output part 132 is an outlet for outputting the coolant from the coolant layer 300 to the outside of the heat exchange plate 100 .

<Details of the configuration of the heat exchange plate>
FIG. 4 is a plan view showing a configuration example of the heat exchange plate 100 according to Embodiment 1. FIG. FIG. 5A is a perspective view showing a first configuration example of the heat exchange plate 100 according to Embodiment 1. FIG. FIG. 5B is a perspective view of the AA section of the heat exchange plate 100 shown in FIG. 5A. FIG. 6A is a perspective view showing a second configuration example of the heat exchange plate 100 according to Embodiment 1. FIG. FIG. 6B is a perspective view of the AA section of the heat exchange plate 100 shown in FIG. 6A. FIG. 7 is a cross-sectional perspective view showing the configuration of a heat exchange plate for comparison.

As shown in FIG. 4 , the heat exchange plate 100 has a wall portion 150 forming at least a part of the cooling liquid flow path in the cooling liquid layer 200 .

At least part of the wall portion 150 of the cooling liquid layer 200 may be arranged along a predetermined direction along a predetermined plane in the cooling liquid layer 200 . The predetermined surface may be the floor surface of the vehicle body 2 . The predetermined direction of the wall portion 150 may be a direction (for example, the Y-axis direction) corresponding to the traveling direction in which the vehicle body can travel by the first wheels 3a and the second wheels 3b. However, the predetermined direction of the wall portion 150 is not limited to the direction of travel, and may be, for example, a direction perpendicular to the direction of travel (that is, the left-right direction when facing the direction of travel).

As shown in FIG. 4, the wall portion 150 has a first wall surface 151, a second wall surface 152 opposite to the first wall surface 151, and an end surface 153 connecting the first wall surface 151 and the second wall surface 152. good. In the coolant layer 200, the coolant enters from the coolant input 121, travels along the first wall surface 151, then along the end surface 153, then along the second wall surface 152, and continues along the coolant layer 200. It may flow out from the output unit 122 .

As shown in FIGS. 5A, 5B, 6A, and 6B, at least a portion of the wall portion 150 of the coolant layer 200 is a first planar member protruding from the first planar member 101 toward the second planar member 102 . It may be composed of a convex portion 161 and a second convex portion 162 protruding from the second planar member 102 toward the first planar member 101 . The first convex portion 161 may be formed by pressing the first planar member 101 . The second convex portion 162 may be formed by pressing the second planar member 102 . That is, the first protrusion 161 and the second protrusion 162 may combine with each other to form at least a portion of the wall portion 150 of the coolant layer 200 . Note that the position of the first convex portion 161 will be described later.

A coolant flow path in the coolant layer 300 may be configured by the shape of the third planar member 103 . The flow paths for the coolant may be formed by pressing the third planar member 103 .

For example, as shown in FIG. 4, the coolant channels include at least two coolant channels (hereinafter referred to as input coolant channel 301 and 302) and a plurality of refrigerant flow paths (hereinafter referred to as branched refrigerant flow paths 303) connecting the input refrigerant flow path 301 and the output refrigerant flow path 302. The input coolant channel 301 may lead to the coolant input 131 and the output coolant channel 302 may lead to the coolant output 132 . Hereinafter, the two branched refrigerant flow paths 303 adjacent to each other may be referred to as a first refrigerant flow path 303A and a second refrigerant flow path 303B, respectively.

As shown in FIG. 4, at least a portion of the wall portion 150 of the coolant layer 200 and at least a portion of the first coolant flow path 303A extend from the normal direction of a predetermined surface (for example, the floor surface of the vehicle body 2). See, we may intersect at the first intersection point 171 . At least a portion of the wall portion 150 of the coolant layer 200 and at least a portion of the second coolant flow path 303B are located at a second intersection point 172 when viewed from the normal direction of a predetermined surface (for example, the floor surface of the vehicle body 2). can be crossed at

The first convex portion 161 of the first planar member 101 may be arranged corresponding to an intersection point where at least a portion of the wall portion 150 of the cooling liquid layer 200 and at least a portion of the flow path of the coolant intersect. For example, the first protrusion 161 may be arranged between the first intersection 171 and the second intersection 172 . In this case, the first protrusion 161 may be arranged at a position that does not correspond to one of the plurality of battery modules 30 .

Next, with reference to FIG. 7, a problem that occurs when the first convex portion 161 is not formed will be described. Further, with reference to FIGS. An example of the wall portion 150 configured by the second convex portion 162 will be described.

As shown in FIG. 7, when only the second planar member 102 is pressed to form the wall portion 150, the coolant flowing through the branched coolant flow channel 303 (the first coolant flow channel 303A) flows inside the wall portion 150. Through the space, it flows into the adjacent branched refrigerant channel 303 (second refrigerant channel 303B). In this case, the cooling effect aimed at by designing the coolant flow path cannot be obtained.

Therefore, as shown in FIGS. 5A and 5B, a first intersection point 171 (see FIG. 4) where the first coolant channel 303A and the wall portion 150 of the coolant layer 200 intersect, and the second coolant channel 303B and the cooling Between the second intersection point 172 (see FIG. 4 ) where the wall portion 150 of the liquid layer 200 intersects, the first planar member 101 is provided with a first planar member 101 so as to constitute a part of the wall portion 150 of the cooling liquid layer 200 . 1 convex portion 161 is formed. Then, when forming the second projections 162 of the second planar member 102, the portions facing the first projections 161 are not extruded. As a result, as shown in FIG. 5B , the second projections 162 of the second planar member 102 and the first projections 161 of the first planar member 101 are tightly fitted, and the wall portion 150 of the coolant layer 200 is formed. forms part of In addition, the internal space of the wall portion 150 connecting the first coolant channel 303A to the second coolant channel 303B is divided by the first protrusion 161 formed between the first intersection 171 and the second intersection 172. be. As a result, the coolant flowing through the first coolant channel 303A passes through the internal space of the wall portion 150 and flows into the second coolant channel 303B. It is possible to prevent the coolant from flowing through the internal space of the portion 150 and into the first coolant channel 303A.

Alternatively, as shown in FIGS. 6A and 6B, at a first intersection point 171 where the first coolant channel 303A and the coolant wall 150 intersect, Alternatively, the first projection 161 may be formed on the first planar member 101 . For example, the first convex portion 161 is formed on the first planar member 101 so as to be equal to or larger than the width of the first refrigerant flow path 303A at the first intersection 171 in the Y-axis direction. Then, when forming the second projections 162 of the second planar member 102, the portions facing the first projections 161 are not extruded. As a result, as shown in FIG. 6B, the second projections 162 of the second planar member 102 and the first projections 161 of the first planar member 101 are tightly fitted, and the wall portion 150 of the coolant layer 200 is formed. to form In addition, the first convex portion 161 blocks the portion where the first coolant flow path 303</b>A is connected to the internal space of the wall portion 150 on the first intersection point 171 . As a result, the coolant flowing through the first coolant channel 303A passes through the internal space of the wall portion 150 and flows into the second coolant channel 303B. It is possible to prevent the coolant from flowing through the internal space of the portion 150 and into the first coolant channel 303A. The second intersection point 172 and other intersection points may also have the same configuration.

The first protrusion 161 may be formed on a portion of the first planar member 101 where the battery module 30 is not arranged. When the first protrusion 161 is formed in the portion of the first planar member 101 where the battery module 30 is arranged, the area of the first planar member 101 in contact with the bottom surface of the battery module 30 is reduced, and the battery module 30 is cooled. This is because the effect can be reduced.

<Modification>
FIG. 8 is a schematic diagram showing a modification of the heat exchange plate 100 according to the first embodiment.

As shown in FIG. 8, the wall portion 150 of the cooling liquid layer 200 is configured by the first protrusions 161 formed on the first planar member 101 without forming the second protrusions 162 on the second planar member 102 . may In this case, the internal space of the wall portion 150 that connects the two adjacent branched refrigerant flow paths 303 as described above is not formed.

However, when the battery module 30 is arranged on the first protrusion 161 of the first planar member 101 as shown in FIG. The area of planar member 101 is reduced, and the cooling effect of battery module 30 can be reduced. Therefore, in the modification according to the present embodiment, as shown in FIG. The first protrusion 161 of the shaped member 101 may be formed. This can prevent the area of the first planar member 101 in contact with the bottom surface of the battery module 30 from decreasing. Therefore, it is possible to prevent the cooling effect of the battery module 30 from being reduced.

Although the embodiments have been described above with reference to the accompanying drawings, the present disclosure is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications, modifications, substitutions, additions, deletions, and equivalents within the scope of the claims. It is understood that it belongs to the technical scope of the present disclosure. Also, the components in the above-described embodiments may be combined arbitrarily without departing from the spirit of the invention.

The technology of the present disclosure is useful for vehicles driven by an on-board battery.

1 vehicle 2 vehicle body 3 wheel 3a first wheel 3b second wheel 4 electric motor 10 battery pack 20 housing 30 battery module 31 battery module group 100 heat exchange plate 101 first planar member 102 second planar member 103 third planar member Member 110F front surface 121 coolant input portion 122 coolant output portion 131 coolant input portion 132 coolant output portion 150 wall portion 151 first wall surface 152 second wall surface 153 end surface 161 first convex portion 162 second convex portion 171 first intersection 172 second intersection point 200 cooling liquid layer 300 refrigerant layer 301 input refrigerant flow path 302 output refrigerant flow path 303 branch refrigerant flow path 303A first refrigerant flow path 303B second refrigerant flow path

Claims (20)

a vehicle body;
a first wheel and a second wheel coupled to the vehicle body;
a battery module group having a plurality of battery modules arranged along a predetermined plane in the vehicle body;
a heat exchange plate arranged along the predetermined surface in the vehicle body;
a motor that drives at least the first wheel using electric power supplied from the battery module group,
The heat exchange plate is
a first planar member arranged along the predetermined plane;
a second planar member arranged along the predetermined plane;
a third planar member arranged along the predetermined plane,
at least part of the second planar member is disposed between the first planar member and the third planar member;
The battery module group is arranged at a position opposite to the second planar member with respect to the first planar member,
The heat exchange plate further includes a cooling liquid layer for circulating a cooling liquid between the first planar member and the second planar member;
a coolant layer for circulating a coolant between the second planar member and the third planar member;
a wall portion forming at least part of a flow path for the cooling liquid in the cooling liquid layer;
At least a part of the wall portion of the cooling liquid layer includes a first convex portion protruding from the first planar member toward the second planar member, and and a second convex portion protruding toward the member,
vehicle. A vehicle according to claim 1,
at least part of the wall portion of the cooling liquid layer is arranged in the cooling liquid layer along a predetermined direction along the predetermined surface;
the coolant layer of the heat exchange plate comprises a channel for the coolant;
the at least part of the wall and the at least part of the flow path for the coolant intersect when viewed from the normal direction of the predetermined surface;
vehicle. A vehicle according to claim 1 or claim 2,
wherein the channel for the coolant in the coolant layer is configured by the shape of the third planar member,
vehicle. A vehicle according to claim 2 or claim 3,
The predetermined direction of the wall corresponds to a traveling direction in which the vehicle body can travel by the first wheel and the second wheel.
vehicle. A vehicle according to any one of claims 2 to 4,
The first convex portion is arranged corresponding to an intersection point where the at least part of the wall portion of the cooling liquid and the at least part of the flow path of the coolant intersect,
vehicle. A vehicle according to any one of claims 2 to 4,
the flow path for the coolant has at least a first coolant flow path and a second coolant flow path,
the at least part of the wall and at least part of the first coolant channel intersect at a first intersection when viewed from the normal direction of the predetermined surface;
the at least part of the wall and at least part of the second coolant channel intersect at a second intersection when viewed from the normal direction of the predetermined surface;
The first protrusion is arranged between the first intersection and the second intersection,
vehicle. A vehicle according to any one of claims 1 to 6,
wherein the first protrusion is arranged at a position not corresponding to one of the plurality of battery modules;
vehicle. A vehicle according to any one of claims 1 to 7,
The wall portion has a first wall surface, a second wall surface opposite to the first wall surface, and an end surface connecting the first wall surface and the second wall surface,
the coolant travels along the first wall surface, then along an end surface, and then along a second wall surface in the coolant layer;
vehicle. A vehicle according to any one of claims 1 to 8,
The heat exchange plate exchanges heat between at least the battery module group and the cooling liquid via the first planar member.
vehicle. A vehicle according to any one of claims 1 to 9,
The vehicle body has a housing that houses the battery module group and the heat exchange plate,
vehicle. a vehicle body;
a first wheel and a second wheel coupled to the vehicle body;
a battery module group having a plurality of battery modules arranged along a predetermined plane in the vehicle body;
a heat exchange plate that can be installed in a vehicle, comprising: an electric motor that drives at least the first wheel using electric power supplied from the battery module group;
In the vehicle body, it can be arranged along the predetermined surface,
a first planar member arranged along the predetermined plane;
a second planar member arranged along the predetermined plane;
a third planar member arranged along the predetermined plane,
a cooling liquid layer for circulating a cooling liquid between the first planar member and the second planar member;
a coolant layer for circulating a coolant between the second planar member and the third planar member;
a wall portion forming at least a part of a flow path of the cooling liquid in the cooling liquid layer;
has
at least part of the second planar member is disposed between the first planar member and the third planar member;
At least a part of the wall portion of the cooling liquid layer includes a first convex portion protruding from the first planar member toward the second planar member, and and a second convex portion protruding toward the member,
heat exchange plate. A heat exchange plate according to claim 11,
at least part of the wall portion of the cooling liquid layer can be arranged in the cooling liquid layer along a predetermined direction along the predetermined surface;
the coolant layer of the heat exchange plate comprises a channel for the coolant;
the at least part of the wall and the at least part of the flow path for the coolant intersect when viewed from the normal direction of the predetermined surface;
heat exchange plate. The heat exchange plate according to claim 11 or 12,
wherein the channel for the coolant in the coolant layer is configured by the shape of the third planar member,
heat exchange plate. The heat exchange plate according to claim 12 or 13,
The predetermined direction of the wall portion can be arranged so as to correspond to a traveling direction in which the vehicle body can travel by the first wheel and the second wheel.
heat exchange plate. The heat exchange plate according to any one of claims 12 to 14,
The first convex portion is arranged corresponding to an intersection point where the at least part of the wall portion of the cooling liquid and the at least part of the flow path of the coolant intersect,
heat exchange plate. The heat exchange plate according to any one of claims 12 to 14,
the flow path for the coolant has at least a first coolant flow path and a second coolant flow path,
the at least part of the wall and at least part of the first coolant channel intersect at a first intersection when viewed from the normal direction of the predetermined surface;
the at least part of the wall and at least part of the second coolant channel intersect at a second intersection when viewed from the normal direction of the predetermined surface;
The first protrusion is arranged between the first intersection and the second intersection,
heat exchange plate. The heat exchange plate according to any one of claims 11 to 16,
the first convex portion can be arranged at a position that does not correspond to one of the plurality of battery modules;
heat exchange plate. A heat exchange plate according to any one of claims 11 to 17,
The wall portion has a first wall surface, a second wall surface opposite to the first wall surface, and an end surface connecting the first wall surface and the second wall surface,
said coolant may travel along said first wall surface, then along an end surface, and then along a second wall surface in said coolant layer;
heat exchange plate. The heat exchange plate according to any one of claims 11 to 18,
heat exchange is possible between at least the battery module group and the cooling liquid via the first planar member;
heat exchange plate. The heat exchange plate according to any one of claims 11 to 19,
In the vehicle body, it can be accommodated in a housing together with the battery module group,
heat exchange plate.

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