CN217783614U

CN217783614U - Expansion kettle and vehicle

Info

Publication number: CN217783614U
Application number: CN202221995520.7U
Authority: CN
Inventors: 张伟松; 韩富秋; 朱建忠
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-11
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses an expansion kettle and vehicle, expansion kettle includes: a first kettle; the second kettle is connected to one transverse side of the first kettle; the third kettle is connected to the other transverse side of the first kettle; wherein, first kettle, second kettle and third kettle are inside all to be equipped with the stock solution chamber that is used for saving the coolant liquid, in vertical: the top of the first kettle, the second kettle and the third kettle is respectively provided with a liquid filling port communicated with the liquid storage cavity, and the bottom of the first kettle, the second kettle and the third kettle is respectively provided with a liquid supplementing port communicated with the liquid storage cavity. First kettle, second kettle and third kettle are integrated as an organic whole, and the kettle use quantity is reduced by three to one, practices thrift cost and space, reduces the assembly process, and in addition, the design can make the ascending size in the horizontal direction of inflation kettle great like this, and the ascending size in longitudinal direction is less, so, the inflation kettle can set up in comparatively narrow and small space along longitudinal direction.

Description

Expansion kettle and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to an inflation kettle and vehicle are related to.

Background

The expansion kettle is a part of a cooling system of an automobile engine, in the running process of the engine, cooling liquid circularly flows in a pipeline of the cooling system, and when the cooling liquid passes through the expansion kettle, if the air pressure or the liquid level in the expansion kettle is too high, redundant gas or redundant cooling liquid flows out of a bypass pipeline of the expansion kettle to prevent the temperature of the cooling system from being too high.

In the related technology, the expansion kettle is provided with three water paths, water chambers of the three water paths are gathered and distributed, the shape of the water chambers is close to a cube, the water chambers are not favorable for being arranged in a narrow space, the relation among the water chambers is complex, liquid level display is difficult to distinguish and is easy to confuse, wrong cooling liquid is added, in addition, the materials are made of engineering plastics, special molds and injection molding equipment are needed in the process, the early investment is high, the development period is long, and the expansion kettle is not suitable for small-batch production or modification.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an expansion kettle, this expansion kettle is convenient for install, and the structure is simpler and clear moreover, is convenient for arrange.

The utility model discloses a vehicle is further proposed.

According to the utility model discloses an expansion kettle, include: a first kettle; the second kettle is connected to one transverse side of the first kettle; the third kettle is connected to the other transverse side of the first kettle; wherein, first kettle, second kettle and third kettle are inside all to be equipped with the stock solution chamber that is used for saving the coolant liquid, in vertical: the top of the first kettle, the top of the second kettle and the top of the third kettle are respectively provided with a liquid filling port communicated with the liquid storage cavity, and the bottom of the first kettle, the bottom of the second kettle and the bottom of the third kettle are respectively provided with a liquid supplementing port communicated with the liquid storage cavity.

According to the utility model discloses an expansion kettle, second kettle and third kettle are connected respectively in the horizontal both sides of first kettle, so can make first kettle, second kettle and third kettle are integrated as an organic whole, kettle use quantity is one by three reduction, practice thrift cost and space, reduce assembly process, the installation of the expansion kettle of being convenient for, and first kettle, second kettle and third kettle can supply the coolant liquid for the cooling system pipeline of difference respectively, and the exhaust air, the overall structure that can make expansion kettle like this is simpler and clear, in addition, the design can make the ascending size in the horizontal direction of expansion kettle great like this, the ascending size in vertical direction is less, so, expansion kettle can set up in comparatively narrow and small space along vertical direction, for example: the narrow space between the cockpit and the container is convenient for the integral arrangement of the expansion kettle.

In some examples of the present invention, the top of the fluid infusion port extends into the fluid storage chamber, and the top of the fluid infusion port is higher than the bottom of the fluid storage chamber.

In some examples of the present invention, the first, second and third kettles are metal kettles.

In some examples of the present invention, liquid level display devices are disposed on the outer sides of the first kettle, the second kettle and the third kettle; the liquid level display device includes: a display tube extending vertically; the first communicating piece is arranged at the top of the display tube, and the top of the display tube is communicated to the corresponding liquid storage cavity through the first communicating piece; the second communicating piece is arranged at the bottom of the display tube, and the bottom of the display tube is communicated to the corresponding liquid storage cavity through the second communicating piece.

In some examples of the present invention, the first water bottle is a water bottle for electric control cooling of a motor, the second water bottle is a water bottle for battery cooling, and the third water bottle is a water bottle for engine cooling.

In some examples of the present invention, the first water bottle has a first front side wall, a first rear side wall, a first left side wall, and a first right side wall, the first front side wall, the first rear side wall, the first left side wall, and the first right side wall enclosing a liquid storage cavity of the first water bottle; the second kettle is provided with a second front side wall, a second rear side wall, a second left side wall and a second right side wall, and the second front side wall, the second rear side wall, the second left side wall and the second right side wall enclose to form a liquid storage cavity of the second kettle; the first front side wall and the second front side wall are integrally arranged, the first rear side wall and the second rear side wall are integrally arranged, and the first right side wall and the second left side wall are integrally arranged.

In some examples of the utility model, the expansion kettle further comprises: and the mounting bracket is connected between the first kettle and the third kettle.

In some examples of the present invention, the mounting bracket is provided with a convex mounting portion, and the mounting portion is provided with a vehicle body mounting hole.

In some examples of the utility model, each all be provided with the enhancement support of horizontal extension in the stock solution intracavity, with will the stock solution chamber is separated into cavity and lower cavity, be provided with the through-hole on the enhancement support, go up the cavity with the cavity passes through down the through-hole intercommunication.

According to the utility model discloses a vehicle, include: a cockpit; the cargo box is arranged behind the cab; the expansion water kettle is arranged between the cockpit and the container.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of an expansion tank according to an embodiment of the present invention;

fig. 2 is a first sectional view of an expansion tank according to an embodiment of the present invention;

fig. 3 is a second sectional view of an expansion tank according to an embodiment of the present invention;

fig. 4 is a third sectional view of an expansion tank according to an embodiment of the present invention.

Reference numerals are as follows:

1. an expansion kettle;

10. a first kettle; 11. a liquid injection port; 12. a fluid infusion port; 13. a liquid storage cavity; 14. a reinforcing plate; 15. an upper chamber; 16. a lower chamber; 17. a through hole; 18. an air escape opening; 20. a second kettle; 30. a third kettle; 40. a liquid level display device; 41. a first communication member; 42. a second communicating member; 43. a display tube; 44. removing an air pipe; 50. a common housing; 60. a partition plate; 70. mounting a bracket; 71. and (5) vehicle body mounting holes.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

An expansion pot 1 according to an embodiment of the present invention will be described with reference to fig. 1 to 4, wherein a first cross-sectional view is a cross-sectional view of the expansion pot 1 cut in a vertical direction in a horizontal direction as a whole, a second cross-sectional view is a cross-sectional view of the expansion pot 1 cut in a vertical direction in a longitudinal direction of the mounting bracket 70, and a third cross-sectional view is a cross-sectional view of the expansion pot 1 cut in a vertical direction in a longitudinal direction of the liquid level display device 40.

As shown in fig. 1 and 2, an expansion tank 1 according to the embodiment of the present invention comprises: a first 10, a second 20 and a third kettle 30. The first kettle 10, the second kettle 20 and the third kettle 30 can supply and drain air to and from the driving motor, the battery heat management pipeline, the dual electric control and distribution box and the water-air intercooler cooling pipe, so that the driving motor, the battery heat management pipeline, the dual electric control and distribution box and the water-air intercooler cooling pipe can work normally.

As shown in fig. 1 and 2, the second kettle 20 is connected to one lateral side of the first kettle 10, and the third kettle 30 is connected to the other lateral side of the first kettle 10. That is to say, second kettle 20 and third kettle 30 are connected respectively in the horizontal both sides of first kettle 10, so can make first kettle 10, second kettle 20 and third kettle 30 are integrated as an organic whole, the use quantity of kettle is by three reduction to one, save cost and space, reduce assembly process, be convenient for the installation of expansion kettle 1, and first kettle 10, second kettle 20 and third kettle 30 can supply the coolant liquid for different cooling system pipelines respectively, and the exhaust air, when needing to pour into the coolant liquid into to the cooling pipeline of difference, the accessible is to the first kettle 10 that corresponds, second kettle 20 or third kettle 30 supply the coolant liquid, so, the difficult condition that adds wrong coolant liquid that appears takes place, expansion kettle 1's overall structure is simpler and clear, in addition, the design can make expansion kettle 1's the ascending size in horizontal direction great like this, the ascending size in longitudinal direction is less, wholly is the platykurtic, so, expansion kettle 1 can set up in comparatively narrow and small space along longitudinal direction, for example: a narrow space between the cockpit and the container, thereby being convenient for the whole arrangement of the expansion kettle 1.

As shown in fig. 1 and 2, the first kettle 10, the second kettle 20, and the third kettle 30 are all provided with liquid storage cavities 13 for storing cooling liquid therein, and the liquid storage cavities 13 can be used for storing cooling liquid, so that the first kettle 10, the second kettle 20, and the third kettle 30 can respectively use the liquid storage cavities 13 arranged therein to store cooling liquid therein. In the vertical direction, the top of the first kettle 10, the second kettle 20 and the third kettle 30 are respectively provided with a liquid filling port 11 communicated with the liquid storage cavity 13, and the bottom of the first kettle 10, the second kettle 20 and the third kettle 30 are respectively provided with a liquid supplementing port 12 communicated with the liquid storage cavity. Annotate liquid mouth 11 and can be used for adding the coolant liquid, and the mode of interpolation is a small amount of times, and fluid infusion mouth 12 is linked together with the cooling pipeline, the coolant liquid enters into first kettle 10, behind second kettle 20 and the third kettle 30, can continue to let in the cooling pipeline through fluid infusion mouth 12, it is provided with the lid to annotate liquid mouth 11 department, treat first kettle 10, after the coolant liquid level in second kettle 20 and the third kettle 30 is stable, the lid is closed, and the periphery of annotating liquid mouth 11 is provided with disappointing mouthful 18, after atmospheric pressure in expansion kettle 1 reaches a definite value, can open the lid, gas is discharged from disappointing mouthful 18. In addition, the first kettle 10, the second kettle 20 and the third kettle 30 are respectively provided with a liquid filling port 11 and a liquid supplementing port 12, so that the liquid can be filled into the corresponding kettle from the corresponding liquid filling port 11, and the liquid can be introduced into the corresponding cooling pipeline from the corresponding liquid supplementing port 12, so that errors in adding the cooling liquid into different kettles can be avoided.

In addition, as shown in FIG. 2, the top of the fluid infusion port 12 extends into the reservoir 13, and the top of the fluid infusion port 12 is higher than the bottom of the reservoir 13. The top of the fluid infusion port 12 extends into the bottom of the fluid storage cavity 13, so that the cooling fluid can be better introduced into the cooling pipeline through the fluid infusion port 12. And the top of fluid infusion mouth 12 is higher than the bottom of stock solution chamber 13, and the impurity in the coolant liquid that adds like this will deposit in the bottom of stock solution chamber 13, reduces impurity and enters into the cooling line through fluid infusion mouth 12 to avoid the impurity to cause the damage to the water pump.

Of course, as shown in fig. 1 and 3, the first kettle 10, the second kettle 20 and the third kettle 30 are all metal kettles, and the liquid level display devices 40 are disposed on the outer sides of the first kettle, the second kettle and the third kettle. That is, the first, second and

third kettles

10, 20 and 30 are made of metal, for example: stainless steel and aluminum alloy, stainless steel and aluminum alloy's structural strength is high, and aluminum alloy's corrosion resisting property is good, and weight is lighter. The body parts of the first kettle 10, the second kettle 20 and the third kettle 30 can be formed by bending, welding and splicing, the liquid injection port 11 and the liquid supplementing port 12 can be welded with the body parts of the first kettle 10, the second kettle 20 and the third kettle 30 respectively after being processed, black paint is sprayed on the outer surface to complete the manufacture, and the expansion kettle 1 is simple in processing technology, low in input cost and suitable for small-batch production or refitted vehicles.

And the liquid level display device 40 is arranged on the outer side of the metal kettle, so that when the cooling liquid is added into the metal kettle, the height of the liquid level in the metal kettle can be known through the liquid level display device 40, and the situation that the cooling liquid in the metal kettle is added in a small amount or in an excessive amount can be avoided. And the first kettle 10, the second kettle 20 and the third kettle 30 are all provided with liquid level display devices 40, so that the liquid level heights of the cooling liquid in different kettles can be conveniently judged.

Specifically, as shown in fig. 1, 3 and 4, the liquid level display device 40 includes: first communicating piece 41, second communicating piece 42 and display tube 43, display tube 43 extends along vertical, and the top of display tube 43 is located to first communicating piece 41, and the top of display tube 43 communicates to the corresponding stock solution chamber 13 in through first communicating piece 41, and second communicating piece 42 is located the bottom of display tube 43, and the bottom of display tube 43 communicates to the corresponding stock solution chamber 13 in through second communicating piece 42. That is, the first and second communicating

members

41 and 42 of the different liquid level display devices 40 communicate with the liquid storage chambers 13 of the different kettles, for example: set up first connecting piece 41 and second connecting piece 42 of liquid level display device 40 on first kettle 10 and stock solution chamber 13 in with first kettle 10 and be linked together, coolant liquid in the kettle of corresponding like this can let in first connecting piece 41 and second connecting piece 42, and first connecting piece 41 is located the top of display tube 43, second connecting piece 42 is located the bottom of display tube 43, display tube 43 is connected between first connecting piece 41 and second connecting piece 42, it is reasonable to set up like this, the occupation space is less, and be convenient for observe.

The display tube 43 is used for displaying the height of the liquid level, the display tube 43 can be a rubber tube, the visibility of the rubber tube is high, observation is convenient, the display tube 43 is connected between the first communicating piece 41 and the second communicating piece 42, the highest liquid level of the cooling liquid which can be added into the metal kettle can be taken as the height of the first communicating piece 41, and the lowest liquid level of the cooling liquid which can be added into the metal kettle can be taken as the height of the second communicating piece 42.

In an alternative embodiment, the first connecting member 41 is further connected to a degassing pipe 44, when the cooling liquid is continuously added to the metal kettle and the cooling pipeline, the gas in the metal kettle and the cooling pipeline can be discharged from the degassing pipe 44 through the first connecting member 41, and the height of the first connecting member 41 is high, so that the gas in the metal kettle and the cooling pipeline can be discharged as much as possible.

It should be noted that the first water bottle 10 is a water bottle for cooling controlled by an electric motor, the second water bottle 20 is a water bottle for cooling a battery, and the third water bottle 30 is a water bottle for cooling an engine. First kettle 10 is the automatically controlled cooling of motor and uses the kettle, second kettle 20 is the battery cooling and uses the kettle, the temperature of the coolant liquid in the first kettle 10 is close with the temperature of the coolant liquid in the second kettle 20, and third kettle 30 is the kettle for engine cooling, the temperature of the coolant liquid in the third kettle 30 is higher, so, first kettle 10 can be connected with second kettle 20, and first kettle 10 and third kettle 30 interval set up, can avoid the temperature transmission between first kettle 10 and the third kettle 30 like this, thereby can guarantee the cooling effect of the coolant liquid in first kettle 10, second kettle 20 and the third kettle 30. Wherein, the first kettle 10 and the second kettle 20 can use common cooling liquid, and the third kettle 30 uses acid cooling liquid.

In addition, as shown in fig. 2, the first kettle 10 has a first front side wall, a first rear side wall, a first left side wall and a first right side wall, the first front side wall, the first rear side wall, the first left side wall and the first right side wall enclose the liquid storage cavity 13 forming the first kettle 10, the second kettle 20 has a second front side wall, a second rear side wall, a second left side wall and a second right side wall, the second front side wall, the second rear side wall, the second left side wall and the second right side wall enclose the liquid storage cavity 13 forming the second kettle 20, wherein the first front side wall and the second front side wall are integrally arranged, the first rear side wall and the second rear side wall are integrally arranged, and the first right side wall and the second left side wall are integrally arranged.

That is, the first front sidewall, the first rear sidewall, the first left sidewall and the first right sidewall form a main body portion of the first kettle 10 and define the reservoir 13 of the first kettle 10, the second front sidewall, the second rear sidewall, the second left sidewall and the second right sidewall form a main body portion of the second kettle 20 and define the reservoir 13 of the second kettle 20, the first front sidewall and the second front sidewall are integrally formed, the first rear sidewall and the second rear sidewall are integrally formed, the first right sidewall and the first left sidewall are integrally formed, so that the first front sidewall and the second front sidewall, and the first rear sidewall and the second rear sidewall can form a common housing 50 of the first kettle 10 and the second kettle 20, and the first right sidewall and the first left sidewall can form a partition 60 between the reservoir 13 of the first kettle 10 and the reservoir 13 of the second kettle 20, so that the partition 60 is vertically disposed in the common housing 50, the interior of the common housing 50 is partitioned into the first reservoir 10 and the second reservoir 20, and the expansion kettle 20 can be mounted between the first kettle 10 and the second kettle 20, and the expansion kettle 20 can be mounted more simply without the cost of the expansion kettle 1.

According to an alternative embodiment of the present invention, as shown in fig. 1-3, the expansion tank 1 further comprises: and the mounting bracket 70 is connected between the first kettle 10 and the third kettle 30, a convex mounting part is arranged on the mounting bracket 70, and a vehicle body mounting hole 71 is arranged on the mounting part. The middle part of mounting bracket 70 is convex installation department, both sides between the installation can be welded on first kettle 10 and third kettle 30 through the welded mode respectively, can make expansion kettle 1 form a whole like this, the installation setting of the expansion kettle 1 of being convenient for, and through setting up mounting bracket 70 between first kettle 10 and third kettle 30, just so need not all set up a support alone at first kettle 10, second kettle 20 and third kettle 30, thereby can make the structure of expansion kettle 1 more succinct, and the cost is reduced. The installation part is provided with a vehicle body installation hole 71, and the expansion kettle 1 can be installed on the vehicle body by penetrating a bolt through the vehicle body installation hole 71, so that the expansion kettle 1 can be stably arranged on the vehicle body.

Optionally, as shown in fig. 2, a reinforcing bracket 14 extending transversely is disposed in each reservoir 13 to divide the reservoir 13 into an upper chamber 15 and a lower chamber 16, a through hole 17 is disposed on the reinforcing bracket 14, and the upper chamber 15 and the lower chamber 16 are communicated through the through hole 17. That is to say, all be provided with the enhancement support 14 of horizontal extension in first kettle 10, second kettle 20 and third kettle 30, strengthen the structural strength that support 14 can strengthen first kettle 10, second kettle 20 and third kettle 30, avoid the kettle to warp, strengthen support 14 and separate into upper plenum 15 and lower plenum 16 with inside stock solution chamber 13 moreover, can reduce rocking of coolant liquid in the kettle like this, reduce and rock the noise. And the reinforcing bracket 14 is provided with through holes 17 so that the upper chamber 15 and the lower chamber 16 can communicate through the through holes 17 and the cooling liquid in the kettle can be normally circulated.

According to the utility model discloses vehicle, include: the water expansion kettle comprises a cockpit, a container and the water expansion kettle 1 in the embodiment, wherein the container is arranged behind the cockpit, and the water expansion kettle 1 is arranged between the cockpit and the container. In conclusion, the expansion tank 1 has a large dimension in the transverse direction and a small dimension in the longitudinal direction, so that the expansion tank 1 can be arranged in the space between the cockpit and the cargo box in the longitudinal direction.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An expansion tank (1), characterized in that it comprises:

a first kettle (10);

the second kettle (20), the said second kettle (20) is connected to one side of horizontal direction of the said first kettle (10);

the third kettle (30), the said third kettle (30) is connected to the horizontal other side of the said first kettle (10);

wherein, first kettle (10), second kettle (20) and third kettle (30) inside all is equipped with stock solution chamber (13) that are used for saving the coolant liquid, in vertical: the top of first kettle (10), second kettle (20) and third kettle (30) be provided with respectively with annotate liquid mouth (11) of stock solution chamber (13) intercommunication, first kettle (10), the bottom of second kettle (20) and third kettle (30) be provided with respectively with liquid supplementing mouth (12) of stock solution chamber (13) intercommunication.

2. Expansion tank (1) according to claim 1, characterized in that the top of said fluid infusion port (12) extends into said reservoir (13), the top of said fluid infusion port (12) being higher than the bottom of said reservoir (13).

3. Expansion pot (1) according to claim 1, characterized in that said first pot (10), said second pot (20) and said third pot (30) are all metal pots.

4. Expansion tank (1) according to claim 3, characterized in that the outer sides of said first tank (10), second tank (20) and third tank (30) are provided with level display means (40);

the liquid level display device (40) comprises:

a display tube (43), the display tube (43) extending vertically;

the first communicating piece (41), the first communicating piece (41) is arranged at the top of the display tube (43), and the top of the display tube (43) is communicated to the corresponding liquid storage cavity (13) through the first communicating piece (41);

the second communicating piece (42) is arranged at the bottom of the display tube (43), and the bottom of the display tube (43) is communicated to the corresponding liquid storage cavity (13) through the second communicating piece (42).

5. Expansion tank (1) according to claim 1, characterized in that said first tank (10) is an electric motor-controlled cooling tank, said second tank (20) is a battery cooling tank and said third tank (30) is an engine cooling tank.

6. The expansion tank (1) according to claim 5, characterized in that said first tank (10) has a first front side wall, a first rear side wall, a first left side wall and a first right side wall, which enclose a reservoir (13) of said first tank (10);

the second kettle (20) is provided with a second front side wall, a second rear side wall, a second left side wall and a second right side wall, and the second front side wall, the second rear side wall, the second left side wall and the second right side wall enclose to form a liquid storage cavity (13) of the second kettle (20);

the first front side wall and the second front side wall are integrally arranged, the first rear side wall and the second rear side wall are integrally arranged, and the first right side wall and the second left side wall are integrally arranged.

7. Expansion tank (1) according to claim 6, characterized in that it further comprises: a mounting bracket (70), said mounting bracket (70) being connected between said first jug (10) and said third jug (30).

8. The expansion tank (1) according to claim 7, characterized in that said mounting bracket (70) is provided with a projecting mounting portion, said mounting portion being provided with a vehicle body mounting hole (71).

9. Expansion tank (1) according to claim 1, characterized in that a reinforcing bracket (14) extending transversely is provided in each reservoir (13) to divide the reservoir (13) into an upper chamber (15) and a lower chamber (16), the reinforcing bracket (14) being provided with a through hole (17), the upper chamber (15) and the lower chamber (16) being in communication through the through hole (17).

10. A vehicle, characterized by comprising:

a cockpit;

a cargo box disposed behind the cockpit;

the expansion tank (1) of any of claims 1 to 9, said expansion tank (1) being arranged between said cabin and said cargo box.