Expansion water tank for vehicle

Abstract

The utility model discloses a vehicle expansion water tank which comprises a water tank shell, at least two working cavities which are sequentially arranged at intervals are arranged in the water tank shell, a heat insulation cavity is arranged between every two adjacent working cavities, and runner plates are arranged in the working cavities. The runner plates divide the corresponding working cavities into water replenishing cavities, degassing runners and a plurality of degassing cavities which are communicated in sequence; wherein at least two layers of degassing cavities are distributed from top to bottom, the water supplementing cavity is located below the degassing cavities and communicated with the degassing cavity on the lowermost layer, the upper end portion of the degassing flow channel is communicated with the degassing cavity on the uppermost layer, the water tank shell is further provided with a degassing opening corresponding to the degassing flow channel, and the degassing opening is communicated with the degassing flow channel. The water tank shell is further provided with a water supplementing opening corresponding to the water supplementing cavity. The expansion water tank can be simultaneously applied to two or more water path systems, the use number of the expansion water tank can be reduced, the cost can be saved, the arrangement space can be saved, and arrangement is more convenient.

Description

Technical Field

[0001] The utility model relates to an expansion water tank for a vehicle. Background Art

[0002] At present, expansion water tanks are widely used in various water systems to accommodate the expansion of water in the water system and play a role in constant pressure and replenishing water for the water system. The Chinese patent with publication number CN219388006U discloses an expansion water tank with integrated water replenishment port and degassing port. In the automotive industry, new energy vehicles have multiple water systems such as motor electronic control cooling system, battery thermal management system, water heating and warm air system and engine cooling system. The working temperature of each water system is different, so the coolant temperature required in each water system is also quite different. In order to avoid the heat transfer of coolant between the water systems in new energy vehicles, it is necessary to equip each water system with an independent expansion water tank so that each water system is independent of each other. Therefore, multiple expansion water tanks need to be set in new energy vehicles. However, setting up multiple expansion water tanks will not only increase the cost, but also take up more space, which will lead to difficulties in layout. In addition, multiple expansion water tanks cannot be arranged centrally due to space limitations, but can only be arranged in a dispersed manner, which will increase the risk of individual expansion water tanks leaking coolant when filling coolant. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a vehicle expansion water tank, which can be used in two or even more water systems at the same time, can reduce the number of expansion water tanks used, and thus can save costs, can save layout space, and is more convenient for layout.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a vehicle expansion water tank, which includes a water tank shell;

[0005] The water tank shell is provided with at least two working chambers arranged in sequence and spaced apart from each other, and a heat insulation chamber is provided between adjacent working chambers;

[0006] A flow channel plate is provided in the working chamber, and the flow channel plate divides the corresponding working chamber into a water replenishment chamber, a degassing flow channel and a plurality of degassing chambers connected in sequence; wherein the degassing chamber is distributed in at least two layers from top to bottom and at least two degassing chambers are provided in each layer, the water replenishment chamber is located below the degassing chamber and is connected to the degassing chamber of the lowest layer, the degassing flow channel extends vertically and is located on one side of the degassing chamber and the water replenishment chamber, and the upper end of the degassing flow channel is connected to the degassing chamber of the uppermost layer;

[0007] The water tank shell is also provided with a degassing port corresponding to the degassing flow channel, and the degassing port is communicated with the lower end of the corresponding degassing flow channel;

[0008] The water tank shell is also provided with a water replenishment port corresponding to the water replenishment cavity, and the water replenishment port is communicated with the bottom of the corresponding water replenishment cavity.

[0009] Furthermore, the degassing chambers are connected in series in an S-shape from the top to the bottom, the first degassing chamber connected in series in the top layer is connected to the upper end of the corresponding degassing flow channel, and the last degassing chamber connected in series in the bottom layer is connected to the corresponding water replenishment chamber.

[0010] In order to further break the bubbles, a breaking plate is provided in the degassing chamber.

[0011] In order to further balance the air pressure in the insulation cavity, a vent hole communicating with the insulation cavity is provided on the water tank shell.

[0012] Furthermore, the water tank shell is provided with a communication port corresponding to the working chamber one by one, the communication port is connected to the uppermost degassing chamber in the corresponding working chamber, and the communication port is connected to a pressure cover.

[0013] Furthermore, the water tank shell is connected to a liquid level sensor corresponding one to one with the water replenishing cavity, and the liquid level sensor is connected to the bottom of the water tank shell and extends into the corresponding water replenishing cavity.

[0014] Furthermore, two working chambers are arranged side by side on the left and right, each of the working chambers is provided with the flow channel plate and is divided into the water replenishment chamber, the degassing flow channel and a plurality of degassing chambers connected in sequence.

[0015] Furthermore, a partition is provided in the water tank shell, and the partition separates the water tank shell into the working chamber and the heat insulation chamber.

[0016] A specific structure of the water tank shell is further provided, and the water tank shell includes a shell and a back plate; wherein the partition plate and the flow channel plate are both connected to the shell, the back plate is hot-melt welded to the shell, the partition plate and the flow channel plate respectively, and the degassing port and the water replenishing port are both arranged on the shell.

[0017] Furthermore, the back plate is provided with a plurality of mounting holes.

[0018] After adopting the above technical solution, the working chambers are arranged at least two at intervals in sequence, and each of the working chambers can be independently used in a water system. Therefore, the vehicle expansion water tank of the embodiment of the present application can be used in two or even more water systems at the same time. Among them, the working chamber is connected to the corresponding water system through the corresponding water replenishment port and the corresponding degassing port, and can play a role in the corresponding water system. The coolant can be replenished through the water replenishment port, and the degassing port can be used for degassing. The vehicle expansion water tank of the embodiment of the present application is equivalent to integrating two or more expansion water tanks in the prior art into one. One working chamber is equivalent to an expansion water tank in the prior art. Therefore, the vehicle expansion water tank of the embodiment of the present application can be used in two or even more water systems at the same time, thereby reducing the number of expansion water tanks used, thereby saving costs, saving layout space, and being more convenient for layout. In addition, the problem of dispersed layout of multiple expansion water tanks is solved, making it more convenient to add coolant, and avoiding the problem of leakage when adding coolant. Among them, the water system can be the motor electronic control cooling system, battery thermal management system, water heating and warm air system and engine cooling system in new energy vehicles. Furthermore, any adjacent working chambers are separated by the insulating chamber, and the medium in the insulating chamber is air, which has poor thermal conductivity, so it can play a role of heat insulation between adjacent working chambers, and can avoid heat transfer between coolants in adjacent working chambers. For example, it can avoid the coolant in the motor electronic control cooling system heating the coolant in the battery thermal management system. The degassing duct extending vertically is provided so that the degassing port can be set at the lower end of the water tank shell, and the airflow can be directed to a higher place through the degassing duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of the vehicle expansion water tank of the utility model;

[0020] Figure 2 It is an exploded view of the vehicle expansion water tank of the utility model;

[0021] Figure 3 The utility model is a schematic diagram of the internal structure of the vehicle expansion water tank. DETAILED DESCRIPTION

[0022] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0023] like Figures 1 to 3 As shown, a vehicle expansion water tank comprises a water tank housing 1;

[0024] The water tank housing 1 is provided with at least two working chambers 2 arranged in sequence and spaced apart from each other, and a heat insulation chamber 3 is provided between adjacent working chambers 2;

[0025] A flow channel plate 4 is provided in the working chamber 2, and the flow channel plate 4 divides the corresponding working chamber 2 into a water replenishment chamber 5, a degassing flow channel 6 and a plurality of degassing chambers 7 that are connected in sequence; wherein the degassing chamber 7 is distributed in at least two layers from top to bottom and each layer is provided with at least two degassing chambers 7, the water replenishment chamber 5 is located below the degassing chamber 7 and is connected to the degassing chamber 7 of the lowest layer, the degassing flow channel 6 extends vertically and is located on one side of the degassing chamber 7 and the water replenishment chamber 5, and the upper end of the degassing flow channel 6 is connected to the degassing chamber 7 of the highest layer;

[0026] The water tank housing 1 is also provided with a degassing port 8 corresponding to the degassing flow channel 6, and the degassing port 8 is connected to the lower end of the corresponding degassing flow channel 6;

[0027] The water tank housing 1 is also provided with a water replenishment port 9 corresponding to the water replenishment chamber 5, and the water replenishment port 9 is connected to the bottom of the corresponding water replenishment chamber 5. Specifically, at least two working chambers 2 are arranged in sequence, and each of the working chambers 2 can be independently used in a water system, so the vehicle expansion water tank of the embodiment of the present application can be used in two or even more water systems at the same time. Among them, the working chamber 2 is connected to the corresponding water system through the corresponding water replenishment port 9 and the corresponding degassing port 8, and can play a role in the corresponding water system. The coolant can be replenished through the water replenishment port 9, and the degassing can be performed through the degassing port 8. The vehicle expansion water tank of the embodiment of the present application is equivalent to integrating two or more expansion water tanks in the prior art into one, and one working chamber 2 is equivalent to an expansion water tank in the prior art. Therefore, the vehicle expansion water tank of the embodiment of the present application can be used in two or even more water systems at the same time, thereby reducing the number of expansion water tanks used, thereby saving costs, saving layout space, and being more convenient for layout. In addition, the problem of dispersed layout of multiple expansion water tanks is solved, making it more convenient to add coolant and avoiding the problem of leakage when adding coolant. The water system can be the motor electronic control cooling system, battery thermal management system, water heating and air heating system and engine cooling system in new energy vehicles.

[0028] More specifically, any adjacent working chambers 2 are separated by the insulating chamber 3, and the medium in the insulating chamber 3 is air, which has poor thermal conductivity, so it can play a role of insulation between adjacent working chambers 2, and can avoid heat transfer between coolants in adjacent working chambers 2. For example, it can avoid the coolant in the motor electronic control cooling system heating the coolant in the battery thermal management system. More specifically, a degassing duct 6 extending vertically is provided so that the degassing port 8 can be set at the lower end of the water tank shell 1, and the airflow can be directed to a higher place through the degassing duct 6.

[0029] In this embodiment, each of the working chambers 2 is provided with the flow channel plate 4 and is divided into the water replenishment chamber 5, the degassing flow channel 6 and a plurality of degassing chambers 7 connected in sequence, each of the degassing flow channels 6 corresponds to two of the degassing ports 8, and the degassing flow channels 6 are connected to the corresponding two degassing ports 8, each of the water replenishment chambers 5 corresponds to one of the degassing ports 8, and the water replenishment chambers 5 are connected to the corresponding degassing ports 8.

[0030] like Figure 2 , 3 As shown, the degassing chambers 7 are connected in series in an S-shape from the top to the bottom. The first degassing chamber 7 in series in the top layer is connected to the upper end of the corresponding degassing flow channel 6, and the last degassing chamber 7 in series in the bottom layer is connected to the corresponding water replenishment chamber 5. A breaking plate 10 is provided in the degassing chamber 7. Specifically, this S-shaped connecting structure can make the coolant flow in a circuitous way, which can provide sufficient time for the precipitation of bubbles, which is conducive to the precipitation of bubbles, and the precipitated bubbles are punctured after contacting the breaking plate 10, which can effectively precipitate and break the bubbles, improve the degassing efficiency, achieve the purpose of removing all bubbles, and avoid the occurrence of cavitation caused by the bubbles that have not been removed continuing to flow into the water system. In this embodiment, the breaking plate 10 is connected to the flow channel plate 4, and each of the degassing chambers 7 is provided with a breaking plate 10.

[0031] like Figure 3 As shown, the water tank shell 1 is provided with a vent hole 11 connected to the heat-insulating cavity 3, so that the pressure of the heat-insulating cavity 3 and the outside can be balanced through the vent hole 11 at different temperatures.

[0032] like Figures 1 to 3As shown, the water tank housing 1 is provided with a connecting port 12 corresponding to the working chamber 2 one by one, and the connecting port 12 is connected to the uppermost degassing chamber 7 in the corresponding working chamber 2, and a pressure cap 13 is connected to the connecting port 12; specifically, the pressure cap 13 can release the system pressure when the pressure in the water system is too high to protect the system from damage, and when the pressure in the water system is too low, the negative pressure valve in the pressure cap 13 opens to balance the system with the external pressure, so that the water system will not be flattened due to thermal expansion and contraction. Among them, the specific structure of the pressure cap 13 is a prior art well known to those skilled in the art, and will not be described in detail in this embodiment.

[0033] like Figures 1 to 3 As shown, the water tank shell 1 is connected to a liquid level sensor 14 corresponding to the water filling chamber 5 one by one. The liquid level sensor 14 is connected to the bottom of the water tank shell 1 and extends into the corresponding water filling chamber 5. The liquid level sensor 14 is used to detect the remaining amount of coolant to remind the driver to add coolant.

[0034] like Figure 2 , 3 As shown, two working chambers 2 are arranged side by side on the left and right, each of the working chambers 2 is provided with the flow channel plate 4 and is divided into the water replenishment chamber 5, the degassing flow channel 6 and a plurality of degassing chambers 7 connected in sequence.

[0035] like Figure 2 , 3 As shown, a partition 15 is provided in the water tank shell 1, and the partition 15 separates the water tank shell 1 into the working chamber 2 and the heat insulation chamber 3.

[0036] like Figures 1 to 3 As shown, the water tank shell 1 includes a shell 16 and a back plate 17; wherein the partition 15 and the flow channel plate 4 are both connected to the shell 16, the back plate 17 is respectively hot-melt welded to the shell 16, the partition 15 and the flow channel plate 4 and sealed reliably, the degassing port 8 and the water replenishing port 9 are both arranged on the shell 16; specifically, the vent hole 11 and the connecting port 12 are both arranged on the shell 16, and the liquid level sensor 14 is connected to the shell 16.

[0037] like Figure 1 , 2 As shown, a plurality of mounting holes 18 are provided on the back plate 17 so that the back plate 17 can be mounted and fixed on the new energy vehicle through the mounting holes 18 .

[0038] In summary, at least two working chambers 2 are arranged in sequence, and each of the working chambers 2 can be independently used in a water system. Therefore, the vehicle expansion water tank of the embodiment of the present application can be used in two or even more water systems at the same time. Among them, the working chamber 2 is connected to the corresponding water system through the corresponding water replenishment port 9 and the corresponding degassing port 8, and can play a role in the corresponding water system. The coolant can be replenished through the water replenishment port 9, and the degassing can be performed through the degassing port 8. The vehicle expansion water tank of the embodiment of the present application is equivalent to integrating two or more expansion water tanks in the prior art into one. One working chamber 2 is equivalent to an expansion water tank in the prior art. Therefore, the vehicle expansion water tank of the embodiment of the present application can be used in two or even more water systems at the same time, thereby reducing the number of expansion water tanks used, thereby saving costs, saving layout space, and being more convenient for layout. In addition, it also solves the problem of dispersed layout of multiple expansion water tanks, making it more convenient to add coolant, and avoiding the problem of leakage when adding coolant. Among them, the water system can be the motor electronic control cooling system, battery thermal management system, water heating and warm air system and engine cooling system in new energy vehicles. In addition, any adjacent working chambers 2 are separated by the insulation chamber 3. The medium in the insulation chamber 3 is air. The thermal conductivity of air is poor, so it can play a role of insulation between adjacent working chambers 2, and can avoid heat transfer between coolants in adjacent working chambers 2. For example, it can avoid the coolant in the motor electronic control cooling system heating the coolant in the battery thermal management system. The degassing duct 6 extending vertically is provided so that the degassing port 8 can be set at the lower end of the water tank shell 1, and the airflow can be directed to a higher place through the degassing duct 6.

[0039] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle expansion water tank, characterized in that: It comprises a water tank housing (1); The water tank shell (1) is provided with at least two working chambers (2) arranged in sequence and spaced apart from each other, and a heat insulation chamber (3) is provided between adjacent working chambers (2); A flow channel plate (4) is provided in the working chamber (2), and the flow channel plate (4) divides the corresponding working chamber (2) into a water replenishment chamber (5), a degassing flow channel (6) and a plurality of degassing chambers (7) that are connected in sequence; wherein the degassing chamber (7) is distributed in at least two layers from top to bottom and each layer is provided with at least two degassing chambers (7); the water replenishment chamber (5) is located below the degassing chamber (7) and is connected to the degassing chamber (7) of the lowest layer; the degassing flow channel (6) extends vertically and is located on one side of the degassing chamber (7) and the water replenishment chamber (5); and the upper end of the degassing flow channel (6) is connected to the degassing chamber (7) of the highest layer; The water tank shell (1) is also provided with a degassing port (8) corresponding to the degassing flow channel (6), and the degassing port (8) is communicated with the corresponding lower end of the degassing flow channel (6); The water tank housing (1) is also provided with a water replenishment port (9) corresponding to the water replenishment chamber (5), and the water replenishment port (9) is connected to the bottom of the corresponding water replenishment chamber (5).

2. The vehicle expansion water tank according to claim 1, characterized in that: The degassing chambers (7) are connected in series in an S-shape from the top layer to the bottom layer. The first degassing chamber (7) connected in series in the top layer is connected to the upper end of the corresponding degassing flow channel (6), and the last degassing chamber (7) connected in series in the bottom layer is connected to the corresponding water replenishment chamber (5).

3. The vehicle expansion water tank according to claim 1, characterized in that: A breaking plate (10) is provided in the degassing cavity (7).

4. The vehicle expansion water tank according to claim 1, characterized in that: The water tank shell (1) is provided with a vent hole (11) which is in communication with the heat insulation cavity (3).

5. The vehicle expansion water tank according to claim 1, characterized in that: The water tank shell (1) is provided with a communication port (12) corresponding one-to-one to the working chamber (2), the communication port (12) is connected to the uppermost degassing chamber (7) in the corresponding working chamber (2), and the communication port (12) is connected to a pressure cover (13).

6. The vehicle expansion water tank according to claim 1, characterized in that: The water tank housing (1) is connected to a liquid level sensor (14) corresponding one to one with the water replenishment chamber (5); the liquid level sensor (14) is connected to the bottom of the water tank housing (1) and extends into the corresponding water replenishment chamber (5).

7. The vehicle expansion water tank according to claim 1, characterized in that: Two working chambers (2) are arranged side by side on the left and right, and each of the working chambers (2) is provided with the flow channel plate (4) and is divided into the water replenishment chamber (5), the degassing flow channel (6) and a plurality of degassing chambers (7) connected in sequence.

8. The vehicle expansion water tank according to claim 1, characterized in that: A partition (15) is provided in the water tank shell (1), and the partition (15) divides the water tank shell (1) into the working chamber (2) and the heat insulation chamber (3).

9. The vehicle expansion water tank according to claim 8, characterized in that: The water tank shell (1) comprises a shell (16) and a back plate (17); wherein the partition plate (15) and the flow channel plate (4) are both connected to the shell (16); the back plate (17) is respectively hot-melt welded to the shell (16), the partition plate (15) and the flow channel plate (4); and the degassing port (8) and the water replenishing port (9) are both arranged on the shell (16).

10. The vehicle expansion water tank according to claim 9, characterized in that: The back plate (17) is provided with a plurality of mounting holes (18).

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