Patent Application
20240120577
This application claims priority under 35 U.S.C. ยง 119 to Korean Patent Application No. 10-2022-0127206, filed on Oct. 5, 2022, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.
The following disclosure relates to a cooling module in which a reservoir tank, a cooling fluid pump, and a direction change valve for pumping and circulating a cooling fluid are integrally modularized in a vehicle's cooling system, and more particularly, relates to a reservoir tank for a cooling module that stabilizes an unstable fluid introduced into a reservoir tank and transmits the fluid to a pump, thereby minimizing damage to the pump, and a cooling module including the same.
Electric vehicles drive using motors powered by batteries or fuel cells, so they emit less carbon and produce less noise. In addition, electric vehicles are environmentally friendly because they use motors that are more energy efficient than conventional engines.
These electric vehicles are equipped with a thermal management system for cooling and heating for indoor air conditioning and cooling electrical components, such as drive motors, batteries, and inverters.
However, the thermal management system includes a cooling fluid system for heating the vehicle's interior and cooling and heating electrical components. The cooling fluid system has a large number of components for circulation of a cooling fluid and a large number of pipes connecting them, so the process to assemble the cooling fluid system is complex and difficult. In addition, as the length of the pipes connecting the components may increase, the loss of system efficiency due to the pressure drop of the flowing cooling fluid may increase.
Centrifugal pumps are generally used as cooling fluid pumps for pumping cooling fluid, such as the first circulation pump 31 and the second circulation pump 32. Conventionally, in order to satisfy the performance, efficiency of the cooling fluid pump and the size and noise of the cooling fluid pump, multiple cooling fluid pumps are used. Since these centrifugal pumps react sensitively depending on a state of the fluid flowing in, that is, if unstable fluid flows in, damage to the pump may occur, and thus, it is necessary to stabilize the fluid flowing into the pump.
Meanwhile, the cooling module has a cycle in which cooling fluid that has passed through the battery or electrical components is collected in a reservoir tank through a pump, and the cooling fluid stored in the reservoir tank flows back into the pump and is supplied to the battery or electrical components. At this time, the fluid flowing into the reservoir tank may be an unstable fluid including many bubbles and having a low pressure. If the fluid in the above unstable state is supplied directly to the pump, flow defects in the pump may occur, and if it continues, the pump may be damaged due to the fluid in the unstable state.
Therefore, there is a need to develop technology to prevent damage to the pump due to unstable fluid flowing into the pump.
An exemplary embodiment of the present invention is directed to providing a reservoir tank for a cooling module that removes bubbles in unstable fluid flowing into the reservoir tank and minimizes negative pressure to supply stable fluid through a pump, and a cooling module including the same.
An exemplary embodiment of the present invention is directed to providing a reservoir tank for a cooling module that guides cooling fluid flowing into the reservoir tank to a region farthest from an inlet of the pump through a dome screen and stabilizes the cooling fluid while moving to the pump inlet, and a cooling module including the same.
An exemplary embodiment of the present invention is directed to providing a reservoir tank for a cooling module capable of stabilizing fluid flowing into the pump by allowing the cooling fluid flowing into the reservoir tank to pass through at least one porous member to remove bubbles or foreign substances, and a cooling module including the same.
In one general aspect, in a cooling module including a reservoir tank in which cooling fluid is stored and a pump coupled to the reservoir tank and having a cooling fluid inlet in communication with the reservoir tank to pump the cooling fluid, the cooling module includes a guide dome formed on a side opposite to a side into which the cooling fluid flows in so that the cooling fluid flowing into the reservoir tank is transferred to a region spaced apart from the cooling fluid inlet.
The cooling module may include an outlet that transfers the cooling fluid supplied to the reservoir tank into the reservoir tank, and the guide dome may be provided to be adjacent to the outlet so that the cooling fluid flowing out along the outlet is guided along an inner surface and transferred to the region spaced apart from the cooling fluid inlet.
The outlet may allow the cooling fluid to flow out upwardly, and the guide dome may be formed in the form of a guide dome that is concave upwardly, receive the cooling fluid flowing upwardly, transport the cooling fluid along the inner surface, and then discharge the cooling fluid downwardly in a circumferential direction.
The guide dome may be formed on a dome screen coupled to an upper interior of the reservoir tank.
The reservoir tank may include a 1-1 space in which the guide dome is disposed; a 1-2 space in which the cooling fluid inlet is disposed; and a first partition dividing the 1-1 space and the 1-2 space, wherein a first porous member may be provided on the first partition to filter bubbles and foreign substances of the cooling fluid stored in the 1-1 space and supply the filtered bubbles and foreign substances to the 1-2 space.
The first porous member may be formed in a certain region of the first partition, and may be formed close to a circumference of the first partition spaced apart from the cooling fluid inlet at a maximum distance.
The 1-2 space may include: a 1-3 space communicating with the 1-1 space through the first porous member; a 1-4 space in which the cooling fluid inlet is disposed; and a second partition dividing the 1-3 space and the 1-4 space, wherein a second porous member is provided on the second partition to filter bubbles and foreign substances of the cooling fluid stored in the 1-3 space and supply the cooling fluid to the 1-4 space.
The first partition may be formed in a horizontal direction, so that the 1-1 space is formed on an upper side and a 1-2 space is formed on a lower side, and the second partition may be formed in a vertical direction, so that the 1-3 space is formed on one side and the 1-4 space is formed on the other side.
The reservoir tank may include a first space in which a first cooling fluid is stored and a second space in which a second cooling fluid is stored, and the guide dome may be provided in each of the first space and the second space.
The first cooling fluid may be stored in the reservoir tank via a battery for cooling the battery, and the second cooling fluid may be stored in the reservoir tank via an electrical component for cooling the electrical component.
Other features and aspects will be apparent from the following detailed description, the drawings, and the claims.
Hereinafter, an exemplary embodiment of the present invention described above will be described in detail with reference to the drawings.
The reservoir tank 100 stores cooling fluid via a battery and cooling fluid via an electrical component, and the cooling fluid via the battery is supplied to the first pump 210, and the cooling fluid via the electrical component is supplied to the second pump 220. The reservoir tank 100 may have an empty space formed therein so that cooling fluid may be stored, and a pressure cap coupler 115 may be formed on an upper surface of the reservoir tank 100, so that internal pressure of the reservoir tank 100 may be adjusted by a pressure cap (not shown). In addition, a first space A10 and a second space A20 may be divided through a partition 105 (see
The pumps 210 and 220 are cooling fluid pumps that may receive cooling fluid from the reservoir tank 100 and pump the cooling fluid to a necessary place. The pumps 210 and 220 may include a first pump 210 for cooling the battery by circulating the cooling fluid stored in the first space to the battery and a second pump 220 for cooling the electrical component by circulating the cooling fluid stored in the second space to the electrical component. Each pump 210 and 220 may be disposed and coupled to a bottom of one side and the bottom of the other side of the reservoir tank 100, and the pump 210 may have a cooling fluid inlet 211 (see
The direction change valve 300 is a valve that may change the direction of the cooling fluid flow according to an operation thereof. The direction change valve 300 is coupled to a lower side of the reservoir tank 100 and has a plurality of inlet ports and outlet ports to allow the cooling fluid circulating the battery to flow into the reservoir tank 100 or block the cooling fluid circulating the battery from flowing into the reservoir tank 100, or to allow the cooling fluid circulating the electrical component to flow into the reservoir tank 100 or block the cooling fluid circulating the electrical components from flowing into the reservoir tank 100.
The controller may be connected to each of the pumps 210 and 220 and the direction change valve 300 by a cable and may control the operation of the pumps 210 and 220 and the direction change valve 300. The controller may be disposed on the side of the reservoir tank 100 other than the side where the pumps 210 and 220 and the direction change valve 300 are disposed, and coupled to the reservoir tank 100.
The cooling module 1000 according to an exemplary embodiment of the present invention having the above configuration ensures that the unstable cooling fluid flowing into the reservoir tank 100 is supplied to the cooling fluid inlet 211 of the pump 210 in a stabilized state. Hereinafter, a detailed configuration of the cooling module 1000 having the above purpose will be described in detail with reference to the drawings.
As shown, the reservoir tank 100 includes a tank body 110 in which cooling fluid is stored. In addition, the tank body 110 is configured as a single body, and the tank body 110 includes a housing 112 in which the cooling fluid is stored and the flange 111 provided above the housing 112 and having a pressure cap coupler 115. At this time, the reservoir tank 100 includes transfer units 120, 130, 510, and 520 that guide the transfer of the cooling fluid within the reservoir tank 100 so that the cooling fluid flowing into the reservoir tank 100 is transferred to a region spaced apart from the cooling fluid inlet 211.
The transfer units 120, 130, 510, and 520 include a first outlet 510 provided to supply the cooling fluid via the battery to the first space A10 and a second outlet where the cooling fluid via the electrical components is supplied to the second space A20. The outlets 510 and 520 are configured to discharge cooling fluid to the upper side of the reservoir tank 100. In addition, the transfer units 120, 130, 510, and 520 include guide domes 120 and 130 which are provided on the flange 111 and concave upwardly. The guide domes 120 and 130 are configured to receive the cooling fluid flowing out of the outlets 510 and 520 by an inner surface of one side of the guide domes 120 and 130 in a circumferential direction and discharge the cooling fluid downwardly along the circumference of the other side except for the one side. That is, the cooling fluid flowing out of the outlet 510 is not directly supplied to the cooling fluid inlet 211 of the pump 210 in an unstable state, but the cooling fluid is distributed and transferred to a region farthest from the cooling fluid inlet 211, so that a transfer path of the cooling fluid inlet 211 of the cooling fluid supplied to the reservoir tank 100 may be maintained as long as possible. When the transfer path of the cooling fluid becomes longer, bubbles are efficiently removed during the transfer process, making it possible to supply the cooling fluid in a stabilized state to the pump 210. In addition, as the cooling fluid flowing out of the outlets 510 and 520 is transferred along the inner surface of the guide dome 120 and 130 at a gentle slope, there is an advantage of reducing noise caused by impact with the inner surface when the cooling fluid flows out. In addition, it is also possible to transfer the cooling fluid to a desired location by adjusting the diameter of the guide domes 120 and 130.
Referring to
Meanwhile, the first space A10 may be divided into a 1-1 space A11 where the end portion of the first outlet 510 is located and a 1-2 space A12 where the cooling fluid inlet 211 is disposed, and the first partition 140 may be disposed between the 1-1 space A11 and the 1-2 space A12 to separate the 1-1 space A11 and the 1-2 space A12. At this time, a first porous member 141 may be provided on the first partition 140. The first porous member 141 is configured to filter bubbles or foreign substances contained in the cooling fluid and may be formed in a plate shape with a plurality of through-holes having a smaller diameter than the bubbles or foreign substances. For example, the first porous member 141 may be, for example, a porous filter, a screen filter, a mesh, etc. In addition, the through-hole may have any shape, such as circle, oval, or square, as long as it is a shape for removing bubbles or foreign substances.
Therefore, the cooling fluid transferred to the 1-1 space A11 through the first outlet 510 and the first guide dome 120 may be filtered as a stable fluid from bubbles and foreign substances or unstable fluid through the first porous member 141, and transferred to the 1-2 space A12 to be supplied to the pump 210. The first partition 140 may be disposed in the horizontal direction on the first space A1 so that the 1-1 space A11 is formed on the upper side and the 1-2 space A12 is formed on the lower side. The first porous member 141 may be formed in a certain region of the first partition 140, but may be formed close to the periphery of the first partition 140 at the maximum distance from the cooling fluid inlet 211. Through this, the flow path of the cooling fluid may be formed as long as possible.
In addition, the 1-2 space A12 may be divided into a 1-3 space A13 spaced apart from the cooling fluid inlet 211 and a 1-4 space A14 in which the cooling fluid inlet 211 is disposed, and also, a second partition 150 may be disposed between the 1-3 space A13 and the 1-4 space A14 to partition the 1-1 space A11 and the 1-2 space A12. At this time, the second porous member 151 may be disposed on the second partition 150. The second porous member 151 is configured to filter bubbles or foreign substances contained in the cooling fluid and may be formed in a plate shape with a plurality of through-holes having a smaller diameter than the bubbles or foreign substances. For example, the second porous member 151 may be a porous filter, screen filter, mesh, etc. In addition, the through-hole may have any shape, such as circle, oval, or square, as long as it is a shape for removing bubbles or foreign substances.
In addition, the cooling fluid in the 1-1 space A11 may be configured to communicate only with the 1-3 space A13 through the first porous member 141. Therefore, bubbles and foreign substances of the cooling fluid supplied from the 1-1 space A11 to the 1-3 space A13 may be additionally filtered through the second porous member 151 and the cooling fluid is transferred to the 1-4 space A14 and supplied to the pump 210 in a stable state. The second porous member 151 is disposed in a vertical direction on the 1-2 space A12, forming the 1-3 space A13 on one side and the 1-4 space A14 on the other side.
The first space A10 and the second space A20 differ from each other only in the stored cooling fluid, and since their structures may be formed symmetrically, a detailed description of the second space A20 will be omitted.
As shown, the cooling fluid supplied to the reservoir tank 100 through the outlet 510 flows out to one side in the circumferential direction of the guide dome 120, moves along the inner surface of the guide dome 120, is guided to the farthest region from the cooling fluid inlet 211, and is transferred to the cooling fluid inlet 211 along the longest path, so that stabilized fluid is supplied to the pump 210 during the transfer process.
In addition, the cooling fluid supplied to the first space A10 of the reservoir tank 100 is configured to pass through at least one porous member 151, so that the cooling fluid without bubbles and foreign substances is supplied to the first pump 210, and the cooling fluid supplied to the second space A20 of the reservoir tank 100 is also configured to pass through at least one porous member 152, so that the cooling fluid without bubbles and foreign substrates may be supplied to the second pump 220.
The reservoir tank for the cooling module of the present invention with the above configuration and the cooling module including the same have the effect of preventing damage to the pump due to the supply of unstable fluid by stabilizing the unstable fluid flowing into the reservoir tank and supplying it to the pump.
The present invention should not be construed as being limited to the above-mentioned exemplary embodiment. The present invention may be applied to various fields and may be variously modified by those skilled in the art without departing from the scope of the present invention claimed in the claims. Therefore, it is obvious to those skilled in the art that these alterations and modifications fall in the scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2022-0127206 | Oct 2022 | KR | national |
