Water tank, cooling system and vehicle

By incorporating flow channels and baffle structures in the water tank, the problem of reduced cooling effect caused by insufficient water volume in the cooling system is solved. This achieves the expansion buffering and replenishment functions of the cooling medium, improves cooling efficiency, and meets the cooling requirements of high-power heat-generating components.

CN223767603UActive Publication Date: 2026-01-06BYD CO LTD
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Patent Information

Application Number
CN202520608546.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-01-06
Estimated Expiration
2035-03-31

AI Technical Summary

Technical Problem

When the cooling system has insufficient water volume, the cooling effect is reduced, making it difficult to meet the cooling requirements of high-power heat-generating components.

Method used

Design a water tank comprising a receiving cavity, a flow channel, and a structure divided into multiple chambers. The cooling medium is circulated and expanded through the through holes of the flow channel components and baffles. The excess chambers are used to hold the cooling medium, and the cooling medium is replenished into the flow channel to improve cooling efficiency.

Benefits of technology

It achieves expansion buffering and liquid replenishment functions when the temperature of the cooling medium changes, improves the cooling efficiency of the cooling system, and meets the cooling requirements of high-power heat-generating components.

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Abstract

The utility model relates to a water tank, a cooling system and a vehicle. The flow channel piece is arranged in the containing cavity, and the flow channel piece is provided with a first flow channel; the flow channel piece is provided with at least one first through hole, and the first through hole is used for enabling the first flow channel to be communicated with the containing cavity. According to the technical scheme, the cooling effect of the cooling system is improved.
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Description

Technical Field

[0001] This application relates to the field of water tank technology, and more particularly to a water tank, a cooling system, and a vehicle. Background Technology

[0002] Currently, automotive engines require a cooling system to maintain their operation within a suitable temperature range. The expansion tank, as a crucial component of the cooling system, primarily functions to maintain system pressure, separate air from the coolant, replenish evaporated coolant, and buffer pressure fluctuations. However, in related technologies, insufficient coolant in the system can reduce its cooling efficiency. Utility Model Content

[0003] This application provides a water tank that improves the functionality of the water tank and at least partially solves the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a water tank is provided, comprising: a body having a receiving cavity; a flow channel member disposed within the receiving cavity, the flow channel member having a first flow channel; the flow channel member having at least one first through hole for communicating the first flow channel with the receiving cavity.

[0005] Optionally, the body includes an inlet and an outlet, which are respectively connected to the first flow channel.

[0006] Optionally, the water tank also includes at least one partition, which is disposed within the receiving cavity and divides the receiving cavity into multiple independent chambers.

[0007] Optionally, the partition plate is provided with at least one second through hole, which is used to connect the first flow channel with multiple chambers, and the multiple chambers are connected to each other through the second through hole.

[0008] Optionally, the flow channel component includes a cover plate and a housing, the housing being connected to the body, the cover plate covering the housing, and the cover plate and the housing enclosing each other to form a first flow channel.

[0009] Optionally, the first through-hole is provided on the housing and / or cover plate.

[0010] Optionally, the body has an inner wall that encloses and forms a receiving cavity, and at least one side wall of the outer shell is connected to the inner wall of the receiving cavity.

[0011] Optionally, the cover plate is provided with reinforcing ribs.

[0012] Optionally, the cover plate is also provided with a connector, and the cover plate and the partition are connected by the connector.

[0013] Optionally, the partition is also provided with vent holes, which are used to connect multiple chambers to form an air storage chamber.

[0014] Optionally, the partition divides the receiving cavity into a first chamber group and a second chamber group. The first chamber group includes multiple chambers connected in series. A first through-hole on the flow channel for liquid outlet communicates with one of the chambers, and a first through-hole on the flow channel for liquid inlet communicates with the other chamber.

[0015] Optionally, the body is also provided with a liquid injection port that communicates with the receiving cavity, the liquid injection port being used to allow the cooling medium to flow into the receiving cavity.

[0016] Optionally, the body is also provided with an exhaust valve connected to the receiving cavity, which is used to discharge the gas in the receiving cavity.

[0017] Optionally, the body includes an upper housing and a lower housing, with the exhaust valve located on the upper housing.

[0018] Optionally, the body includes an upper shell and a lower shell, which together form a receiving cavity. The flow channel is connected to the lower shell, the first through hole of the partition is located in the cavity of the lower shell, and the vent hole of the partition is located in the cavity of the upper shell.

[0019] According to a second aspect of this application, a cooling system is provided, including the water tank described above.

[0020] Optionally, the cooling system further includes: a radiator; a first water pump; and a first heat exchanger for exchanging heat with the heat-generating components; wherein the water tank can be connected to the first water pump and the radiator respectively, and the first heat exchanger can be connected to the first water pump and the radiator respectively, and the water tank, the radiator, the first water pump and the first heat exchanger together form a first circuit.

[0021] Optionally, a first solenoid valve is provided in the first circuit, and the first solenoid valve is located on the connecting pipeline between the first water pump and the first heat exchanger.

[0022] Optionally, a second solenoid valve is provided in the first circuit, and the second solenoid valve is located on the connecting pipe between the radiator and the first heat exchanger.

[0023] Optionally, the cooling system further includes: a second heat exchanger; a heat sink having a heat dissipation cavity, wherein the heat-generating element is at least partially immersed in the heat dissipation cavity; and a second water pump for forming a second loop with the heat sink; wherein the first water pump, the heat sink, and the water tank together form a third loop, and the second loop and the third loop can exchange heat through the second heat exchanger.

[0024] Optionally, a third solenoid valve is provided in the first circuit, and the third solenoid valve is located on the connecting pipeline between the first water pump and the second heat exchanger.

[0025] Optionally, a fourth solenoid valve is provided in the first circuit, and the fourth solenoid valve is located on the connecting pipe between the radiator and the second heat exchanger.

[0026] Optionally, the cooling system further includes a cooling unit having a fourth loop between it and the second heat exchanger, wherein the second loop and the fourth loop can exchange heat through the second heat exchanger.

[0027] Optionally, the fourth circuit is equipped with a fifth solenoid valve and a sixth solenoid valve.

[0028] Optionally, a fifth loop is provided between the cooling unit and the first heat exchanger, and the fifth loop can exchange heat with the outside of the heating element through the first heat exchanger.

[0029] According to a third aspect of this application, a vehicle is also provided, including the aforementioned cooling system.

[0030] In the water tank of this application embodiment, the above technical solution provides a flow channel component in the receiving cavity, and the flow channel component has a first flow channel. The first flow channel can serve as the main circulation channel for the cooling medium. At least one first through hole is provided on the flow channel component and the partition plate respectively. The first through hole is used to connect the first flow channel with multiple chambers. In this way, the volume of the cooling medium expands when the temperature rises, and the excess chambers can be used to accommodate the cooling medium. When the temperature of the cooling medium decreases, the volume occupied is reduced, and the cooling medium can be replenished into the first flow channel. This enables the water tank to replenish the first flow channel, thereby improving the cooling efficiency of the cooling system to meet the cooling requirements of high-power heat-generating components.

[0031] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0034] Figure 1 This is a schematic diagram of the overall structure of the water tank provided in an exemplary embodiment of this disclosure;

[0035] Figure 2 This is a schematic diagram of the upper shell of the water tank provided in an exemplary embodiment of this disclosure;

[0036] Figure 3 This is a schematic diagram of the structure of the lower shell of the water tank provided in an exemplary embodiment of this disclosure;

[0037] Figure 4 This is a schematic diagram of the structure of the cover plate provided in an exemplary embodiment of this disclosure;

[0038] Figure 5 This is a schematic diagram of the structure of the lower shell of the water tank provided in an exemplary embodiment of this disclosure;

[0039] Figure 6 This is a schematic diagram of the structure of the lower housing provided in another exemplary embodiment of this disclosure.

[0040] Figure 7 This is a schematic diagram of a cooling system in an exemplary embodiment of this disclosure.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Water tank; 10. Body; 11. Receiving cavity; 12. Liquid inlet; 13. Liquid outlet; 20. Flow channel component; 21. First flow channel; 22. First through hole; 27. Second through hole; 23. Cover plate; 24. Outer shell; 25. Reinforcing rib; 26. Connecting component; 30. Partition plate; 31. Chamber; 32. Vent hole; 40. Liquid injection port; 51. Upper shell; 52. Lower shell; 60. Radiator; 70. First water pump; 80. First heat exchanger; 91. First solenoid valve; 120. Heating element. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0044] like Figures 1-7 As shown, in order to achieve the above objectives, according to a first aspect of this application, a water tank 1 is provided, comprising: a body 10 having a receiving cavity 11; a flow channel 20 disposed within the receiving cavity 11, the flow channel 20 having a first flow channel 21; the flow channel 20 having at least one first through hole 22 for communicating the first flow channel 21 with the receiving cavity 11; wherein the medium in the first flow channel 21 and the medium in the receiving cavity 11 can flow to each other.

[0045] In this way, when the temperature of the cooling medium increases and its volume expands, the extra chamber 31 can be used to contain the cooling medium. When the temperature of the cooling medium decreases and its volume decreases, the cooling medium can be replenished into the first flow channel 21 to realize the expansion buffer and liquid replenishment functions of the water tank 1, thereby improving the cooling efficiency of the water tank 1 to meet the cooling requirements of the high-power heat-generating component 120.

[0046] Optionally, the main body 10 includes an inlet 12 and an outlet 13, which are respectively connected to the first flow channel 21. This improves the functionality of the water tank to meet different usage requirements.

[0047] Optionally, the water tank 1 further includes at least one partition 30, which is disposed within the receiving cavity 11 and divides the receiving cavity 11 into multiple independent chambers 31. The partition 30 has at least one second through hole 27, which allows the first flow channel 21 to communicate with the multiple chambers 31, and the multiple chambers 31 are interconnected through the second through hole 27 to form a liquid storage chamber. This provides more space for the coolant, thereby improving the applicability of the water tank 1's expansion buffering and liquid replenishment functions.

[0048] Optionally, the flow channel component 20 includes a cover plate 23 and a housing 24. The housing 24 is connected to the body 10, and the cover plate 23 covers the housing 24. The cover plate 23 and the housing 24 together form a first flow channel 21. This ensures the normal flow of the cooling medium in the first flow channel 21 to meet the usage requirements of the device.

[0049] The main body 10 and the outer shell 24 can be connected as one piece, or they can be connected separately.

[0050] Optionally, the first through hole 22 is provided on the outer casing 24 and / or the cover plate 23. This arrangement increases the versatility of the first through hole 22's placement. In this application, the first through hole 22 is provided on the outer casing 24.

[0051] Optionally, the body 10 has an inner wall that encloses and forms a receiving cavity 11, and at least one side wall of the outer shell 24 is connected to the inner wall of the receiving cavity 11. This improves the strength of the connection between the two and helps to ensure the normal operation of the water tank 1.

[0052] Optionally, the cover plate 23 is provided with reinforcing ribs 25. This design improves the structural strength of the cover plate 23, which helps to ensure the normal operation of the water tank 1.

[0053] Optionally, the cover plate 23 is also provided with a connector 26, and the cover plate 23 and the partition plate 30 are connected by the connector 26. This arrangement improves the connection strength between the cover plate 23 and the partition plate 30, which helps to ensure the normal operation of the water tank 1.

[0054] Optionally, the partition 30 is also provided with a vent 32, which is used to connect the multiple chambers 31 to form a gas storage chamber. In this way, the gas storage chamber is used to collect the gas discharged from the cooling medium, and the gas in the gas storage chamber is then discharged into the atmosphere through the exhaust port, realizing the functions of exhaust and pressure stabilization of the water tank 1.

[0055] Optionally, the partition 30 divides the receiving cavity 11 into a first chamber group and a second chamber group. The first chamber group includes multiple chambers 31 connected in series. A first through hole 22 on the flow channel 20 for liquid outlet communicates with one of the chambers 31, and a first through hole 22 on the flow channel 20 for liquid inlet communicates with the other chamber 31. This improves the efficiency of venting and pressure stabilization of the water tank 1 to meet the usage requirements of the device.

[0056] Optionally, the main body 10 is also provided with a liquid injection port 40 communicating with the receiving cavity 11, the liquid injection port 40 being used to allow the cooling medium to flow into the receiving cavity 11. By setting the above structure, the liquid injection efficiency of the water tank 1 is improved to meet the usage requirements of the device.

[0057] Optionally, the main body 10 is also provided with an exhaust valve connected to the receiving cavity 11, which is used to discharge gas from the receiving cavity 11. By setting the above structure, the exhaust efficiency of the water tank 1 is improved to meet the usage requirements of the device.

[0058] Optionally, the main body 10 includes an upper housing 51 and a lower housing 52, with an exhaust valve located on the upper housing 51. This configuration further improves the exhaust efficiency of the water tank 1 to meet the usage requirements of the device.

[0059] Optionally, the body 10 includes an upper shell 51 and a lower shell 52, which together form a receiving cavity 11. The flow channel component 20 is connected to the lower shell 52. The first through hole 22 of the partition 30 is located in the cavity 31 of the lower shell 52, and the vent hole 32 of the partition 30 is located in the cavity 31 of the upper shell 51. This arrangement facilitates the installation and disassembly of the body 10, thereby improving the efficiency of the body 10's assembly and disassembly.

[0060] According to a second aspect of this application, a cooling system is provided, including the water tank 1 described above.

[0061] Optionally, the cooling system further includes: a radiator 60; a first water pump 70; and a first heat exchanger for heat exchange with the heat-generating element 120. The water tank 1 can be connected to both the first water pump 70 and the radiator 60, and the first heat exchanger can also be connected to both the first water pump 70 and the radiator 60. The water tank 1, radiator 60, first water pump 70, and first heat exchanger together form a first loop. Thus, when the heat-generating element 120 operates at low power, heat exchange can be achieved through indirect cooling via the first heat exchanger. The cooling cycle system is shown in the figure, with the first solenoid valve 91 open. Coolant flows from the water tank 1, passes through the first water pump 70, and then flows through the heat-generating element 120. The heat from the heat-generating element 120 is transferred to the coolant in the first heat exchanger. After absorbing heat, the coolant flows to the radiator 60, which carries the heat from the coolant to the atmosphere. The cooled coolant then returns to the water tank 1, completing the cooling cycle. The entire cycle uses natural cooling, mainly through the heat sink 60 and the heat sink 60. This mode is suitable for low ambient temperatures.

[0062] Optionally, a first solenoid valve 91 is arranged in the first circuit, located on the connecting pipe between the first water pump 70 and the first heat exchanger 80. This allows control of the pipe's on / off state, facilitating the switching of different modes in the cooling system.

[0063] According to a third aspect of this application, a vehicle is also provided, including the aforementioned cooling system.

[0064] In the water tank 1 of this application embodiment, through the above technical solution, a flow channel component 20 is provided in the receiving cavity 11, and the flow channel component 20 has a first flow channel 21. The liquid inlet 12 and the liquid outlet 13 are respectively connected to the first flow channel 21. The first flow channel 21 can serve as the main circulation channel for the cooling medium. At the same time, at least one partition 30 is provided in the receiving cavity 11, and the partition 30 is used to divide the receiving cavity 11 into multiple independent chambers 31. At least one first through hole 22 is provided on the flow channel component 20 and the partition 30 respectively. The first through hole 22 is used to connect the first flow channel 21 with the multiple chambers 31. In this way, when the temperature of the cooling medium rises and its volume expands, the excess chambers 31 can be used to contain the cooling medium. When the temperature of the cooling medium decreases and its volume decreases, the cooling medium can be replenished into the first flow channel 21 to realize the expansion buffer and liquid replenishment functions of the water tank 1.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0067] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0068] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0069] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water tank characterized by, The water tank comprises: a body having a containing cavity; a flow channel member arranged in the containing cavity, the flow channel member having a first flow channel; the flow channel member is provided with at least one first through hole for allowing the first flow channel to communicate with the containing cavity.

2. The water tank according to claim 1, characterized in that The body comprises a liquid inlet and a liquid outlet, which respectively communicate with the first flow channel.

3. The water tank according to claim 1, characterized in that The water tank further comprises at least one partition plate arranged in the containing cavity and separating the containing cavity into a plurality of independent chambers.

4. The water tank according to claim 3, characterized in that The partition plate is provided with at least one second through hole, and the plurality of chambers communicate through the second through hole.

5. The water tank according to claim 1, characterized in that The flow channel member comprises a cover plate and a shell, the cover plate is arranged on the shell, and the cover plate and the shell enclose the first flow channel.

6. The water tank according to claim 5, characterized in that The first through hole is arranged on the shell and / or the cover plate.

7. The water tank according to claim 5, characterized in that The body has an inner wall enclosing the containing cavity, and at least one side wall of the shell is connected with the inner wall.

8. The water tank according to claim 5, characterized in that The cover plate is provided with a reinforcing rib.

9. The water tank according to claim 5, characterized in that The water tank further comprises at least one partition plate arranged in the containing cavity and separating the containing cavity into a plurality of independent chambers; the cover plate is further provided with a connecting member, and the cover plate and the partition plate are connected through the connecting member.

10. The water tank according to claim 3, characterized in that The partition plate is further provided with a vent hole for allowing the plurality of chambers to communicate to form an air storage cavity.

11. The water tank according to claim 3, characterized in that The partition plate separates the containing cavity into at least one chamber group, the chamber group comprises a plurality of chambers connected in series, one of the first through holes of the flow channel member communicates with one of the chambers of the chamber group, and another of the first through holes of the flow channel member communicates with another of the chambers of the chamber group.

12. A cooling system characterized by, The cooling system comprises the water tank as claimed in any one of claims 1-11.

13. The cooling system of claim 12, wherein, The cooling system further comprises: a radiator; a first water pump; a first heat exchanger for heat exchange with a heat generating member; wherein the water tank can respectively communicate with the first water pump and the radiator, the first heat exchanger can respectively communicate with the first water pump and the radiator, and the water tank, the radiator, the first water pump and the first heat exchanger jointly form a first circuit.

14. The cooling system of claim 13, wherein, The first circuit is arranged with a first electromagnetic valve, which is located on a connecting pipeline between the first water pump and the first heat exchanger.

15. A vehicle characterized by comprising: The cooling system comprises the cooling system as claimed in any one of claims 12-14.