Expansion kettle and automobile

Abstract

The utility model provides an expansion kettle and an automobile, and relates to the technical field of automobile heat management. The expansion kettle comprises a kettle body, a first partition structure and a second partition structure, the first partition structure is arranged in the kettle body and divides the inner space of the kettle body into at least two kettle cavities distributed in the first direction, and each kettle cavity is provided with a liquid supplementing opening; the second partition structure is arranged in the kettle cavity and divides the kettle cavity into a first cavity and a second cavity which are arranged in the second direction and communicated with each other, and the size of the first cavity is smaller than that of the second cavity. The first cavity bodies of the kettle cavities correspond to each other in the first direction, and every two adjacent first cavity bodies communicate with each other through a liquid passing opening formed in the first partition structure. The expansion kettle is applied to the automobile, the dry suction risk caused by exposure of a liquid supplementing opening in the expansion kettle when the automobile inclines leftwards and rightwards can be effectively reduced, and therefore stable operation of the automobile is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive thermal management technology, and in particular to an expansion tank and an automobile. Background Technology

[0002] Currently, new energy vehicles involve three thermal management subsystems: power battery thermal management, motor cooling, and air conditioning. These subsystems are related to the safety, reliability, and passenger comfort of the entire vehicle. Therefore, thermal management has become one of the key technologies for new energy vehicles.

[0003] The expansion tank, as a key component of the thermal management system, plays a crucial role. Specifically, the expansion tank is connected to the cooling circuit of the corresponding component through a filler port to regulate the coolant in the cooling circuit. In related technologies, the expansion tank has two or more interconnected chambers to accommodate multiple cooling circuits connected in series in a vehicle. However, when the coolant level in the chamber is low and the vehicle tilts sharply to the left or right during driving, a large amount of coolant in the upward-tilting chamber will flow into the adjacent chamber, resulting in significant coolant loss in that chamber, a drop in coolant level, exposure of the filler port, and the risk of dry-drawing, which in turn affects the stable operation of the vehicle. Utility Model Content

[0004] The purpose of this utility model is to provide an expansion tank and a car to solve the technical problem that when a car is tilted at a large angle while driving, the liquid filling port inside the tank is easily exposed, which may cause the risk of dry suction and thus affect the stable operation of the car.

[0005] To solve the above problems, this utility model provides an expansion kettle, comprising:

[0006] The body of the pot;

[0007] A first partition structure is provided inside the pot body, dividing the internal space of the pot body into at least two pot cavities arranged along a first direction, and each pot cavity is provided with a liquid inlet; and,

[0008] The second partition structure is provided inside the pot cavity, dividing the pot cavity into a first cavity and a second cavity arranged along the second direction and interconnected, wherein the volume of the first cavity is smaller than that of the second cavity;

[0009] The first cavities of each of the pot cavities correspond to each other along a first direction, and two adjacent first cavities are connected by a liquid outlet provided in the first partition structure.

[0010] Optionally, the second partition structure includes a partition that is separated within the pot cavity and extends along the first direction, wherein the upper plate area of ​​the partition is provided with a vent and the lower plate area is provided with a liquid inlet;

[0011] In the pot cavity, the two located at both ends along the first direction are called end pot cavities, and the liquid inlet in the end pot cavity is located at the end of the corresponding partition away from the other pot cavities.

[0012] Optionally, the second partition structure further includes a plurality of first baffles spaced apart within the first cavity, the plurality of first baffles being arranged at intervals along the first direction, and each of the lower plate areas of the first baffles being provided with a first communication port.

[0013] Optionally, the second cavity is provided with a flow-encircling plate, and the flow-encircling plate and the side wall of the second cavity together form a bent and extended flow-encircling channel.

[0014] Optionally, the flow channel is provided with a plurality of second baffles, which are arranged at intervals along the extension direction of the flow channel, and each second baffle has a second communication port in its lower plate area.

[0015] Optionally, the second connection port is located in the lower middle region of the corresponding second baffle;

[0016] Alternatively, the second connecting port extends through the corresponding second baffle in the vertical direction, and reinforcing plates are provided on both sides of the second connecting port.

[0017] Optionally, the replenishment port is located on the bottom wall of the second cavity within the corresponding pot cavity, and the replenishment port is located in the middle region of the second cavity along the first direction.

[0018] Optionally, the first partition structure includes a hollow partition that is separated within the body of the pot and extends along the second direction.

[0019] Optionally, the reservoir has two chambers, one of which has a liquid inlet for connecting to the battery cooling circuit, and the other has a liquid inlet for connecting to the motor cooling circuit.

[0020] This utility model also provides an automobile, including at least two cooling circuits and the aforementioned expansion tank, wherein the expansion tank's inlet is connected to one of the aforementioned cooling circuits.

[0021] The expansion tank provided by this utility model, during use, when the coolant level in the tank cavity is low and the car tilts at a large angle to the left or right, tilts synchronously with the car, with one end of the expansion tank tilting upwards and the other end tilting downwards. Correspondingly, the coolant in each tank cavity flows towards the lower end. In the left-right direction, since the second cavities of each tank cavity are all in a closed, partitioned state, and only the first cavities are connected through a liquid inlet, and the instantaneous flow rate of the connection between the first and second cavities is limited, approximately only the first cavities of adjacent tank cavities can achieve adequate coolant flow during tilting. To improve cooling efficiency, the volume of the first chamber is smaller than that of the second chamber. This effectively reduces the coolant flow between adjacent chambers during large-angle left and right tilting. Specifically, it reduces the amount of coolant flowing from one tilted chamber into the other through the inlet. By reducing coolant loss in the tilted chambers, the coolant level in each chamber is effectively maintained during vehicle operation. This ensures that the inlets in each chamber are submerged in coolant, maintaining their replenishment effect and reducing the risk of dry-drinking due to excessive coolant loss and exposed inlets. This, in turn, ensures the regulating function of the expansion tank and the stable operation of the vehicle. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A first-view axonometric view of an expansion kettle provided in an embodiment of this utility model;

[0024] Figure 2 A second-view axonometric view of an expansion kettle provided in an embodiment of this utility model;

[0025] Figure 3 A top view of the lower part of the expansion kettle provided in this embodiment of the utility model;

[0026] Figure 4 This is an isometric schematic diagram of the lower part of the expansion kettle provided in an embodiment of the present invention;

[0027] Figure 5 This is an isometric view of the upper part of the expansion kettle provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100-Pot body; 110-Pot cavity; 111-First cavity; 112-Second cavity; 120-Replenishment port; 121-Replenishment connector; 130-Addition port; 140-Exhaust connector; 150-Cover; 151-Pressure relief valve; 160-Level sensor; 171-Upper level; 172-Lower level; 180-Connecting lug; 181-Connecting hole; 190-Shock damping pad; 10A-End pot cavity; 10B - Upper pot section; 10C - Lower pot section; 200 - First partition structure; 210 - Hollow partition; 211 - Liquid outlet; 300 - Second partition structure; 310 - Partition; 311 - Vent; 312 - Liquid outlet; 320 - First baffle; 321 - First connecting port; 330 - Flow plate; 331 - Flow channel; 340 - Second baffle; 341 - Second connecting port; 350 - Reinforcing plate. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] This embodiment provides an expansion kettle, such as Figures 1-5As shown, the device includes a pot body 100, a first partition structure 200, and a second partition structure 300. The first partition structure 200 is located inside the pot body 100 and divides the internal space of the pot body 100 into at least two pot cavities 110 arranged along a first direction, and each pot cavity 110 is provided with a liquid inlet 120. The second partition structure 300 is located inside the pot cavity 110 and divides the pot cavity 110 into a first cavity 111 and a second cavity 112 arranged along a second direction and interconnected with each other. The volume of the first cavity 111 is smaller than that of the second cavity 112. The first cavities 111 of each pot cavity 110 correspond to each other along the first direction, and two adjacent first cavities 111 are connected through a liquid outlet 211 provided in the first partition structure 200.

[0034] This embodiment also provides an automobile, including at least two cooling circuits and the aforementioned expansion tank, wherein the expansion tank's inlet 120 is connected to one of the cooling circuits.

[0035] When the expansion tank provided in this embodiment is applied to a car, the first direction can be consistent with the left-right direction of the car, and the second direction is arranged to intersect with the first direction. Preferably, the second direction is consistent with the front-rear direction of the car. The internal space of the tank body 100 is divided into two or more tank cavities 110 arranged sequentially in the left-right direction by the first partition structure 200, and the liquid inlet 120 of each tank cavity 110 is respectively connected to the cooling circuit of different components of the car, specifically the battery cooling circuit, the motor cooling circuit, or the air conditioning cooling circuit.

[0036] Each chamber 110 is divided into a first chamber 111 and a second chamber 112 arranged in a front-to-back direction by a second partition structure 300. The arrangement direction of the first chamber 111 and the second chamber 112 in each chamber 110 is the same, such that all the first chambers 111 are located behind the second chambers 112, or all the first chambers 111 are located in front of the second chambers 112, so that the first chambers 111 are adjacent to each other in the left-to-right direction, and the second chambers 112 are adjacent to each other in the left-to-right direction. The first partition structure 200 is provided with a liquid outlet 211 in the area between two adjacent first chambers 111, so that the two adjacent first chambers 111 are connected, thereby ensuring that the two adjacent chambers 110 are connected, which is suitable for the working condition of different cooling circuits connected in series. At the same time, the area of ​​the first partition structure 200 between two adjacent second chambers 112 is a closed area, so that the two adjacent second chambers 112 are closed in the left-to-right direction.

[0037] During use, when the coolant level in the reservoir 110 is low and the vehicle tilts at a large angle to the left or right, the expansion tank tilts synchronously with the vehicle, with one end tilting upwards and the other downwards. Correspondingly, the coolant in each reservoir 110 flows towards the lower end. In the left-right direction, since the second cavities 112 of each reservoir 110 are all in a closed, partitioned state, with only the first cavities 111 connected through the inlet 211, and given the limited instantaneous flow rate of the connection between the first and second cavities 111, approximately only the first cavities 111 of adjacent reservoirs can effectively circulate coolant during tilting. In this configuration, the volume of the first cavity 111 is smaller than that of the second cavity 112, thereby effectively reducing the coolant flow between two adjacent cavities 110 during large-angle left and right tilting. This effectively reduces the amount of coolant flowing from one upward tilting cavity into the other through the inlet 211. By reducing the coolant loss in the upward tilting cavity 110, the coolant level in each cavity 110 is effectively ensured during vehicle operation. This ensures that the inlet 120 in each cavity 110 is submerged in coolant to maintain its replenishment effect. It also reduces the risk of dry suction caused by excessive coolant loss in the cavity 110 and exposure of the inlet 120, thereby ensuring the regulating function of the expansion tank and ensuring the stable operation of the vehicle.

[0038] When the expansion tank is in use, each tank cavity 110 includes an upper cavity and a lower cavity. The lower cavity contains coolant, and the upper cavity is an air chamber for the cooling circuit to exhaust air into it. Correspondingly, the lower cavity of the first cavity 111 is connected to the lower cavity of the second cavity 112 to ensure the flow of coolant in the first cavity 111 and the second cavity 112. The upper cavity of the first cavity 111 is connected to the upper cavity of the second cavity 112 to ensure the connection of the upper air chambers of the first cavity 111 and the second cavity 112.

[0039] In this embodiment, as Figures 3-5 As shown, the second partition structure 300 includes a partition 310 that is positioned within the pot cavity 110 and extends along a first direction. The upper part of the partition 310 has a vent 311, and the lower part has a liquid inlet 312. Among the pot cavities 110, two pot cavities located at opposite ends along the first direction are designated as end pot cavities 10A. The liquid inlet 312 within the end pot cavity 10A is located at the end of the corresponding partition 310 furthest from the other pot cavities 110. The partition 310 is a long, vertical strip extending along the first direction. The partition 310 divides the pot cavity 110 into two cavities arranged along a second direction, such as... Figure 3As shown in the dashed box, the left-side chamber 110 is divided into two chambers by a partition 310. The smaller of the two chambers is the first chamber 111, and the larger of the two chambers is the second chamber 112. The partition 310 is divided into an upper plate area and a lower plate area along the vertical direction. The upper plate area is provided with a vent 311 to connect the upper air chambers of the first chamber 111 and the second chamber 112. The lower plate area is provided with a liquid inlet 312 to connect the coolant in the first chamber 111 and the second chamber 112.

[0040] Taking the orientation of an expansion tank applied to a car as an example: In each tank cavity 110, the partition 310 extends in the left-right direction, and the first cavity 111 and the second cavity 112 formed by the partition are arranged in the front-back direction; among each tank cavity 110, the tank cavity 110 located at the left end and the tank cavity 110 located at the right end are called end tank cavities 10A, wherein the liquid inlet 312 in the end tank cavity 10A at the left end is located in the region of the partition 310 in the tank cavity 110 near the left end, and the liquid inlet 312 in the end tank cavity 10A at the right end is located in the region of the partition 310 in the tank cavity 110 near the right end.

[0041] When the vehicle tilts significantly to the left or right during operation, the tilt of the end chamber 10A is greatest. For example, when the vehicle tilts significantly to the right, the left end chamber 10A tilts upwards to the greatest extent relative to the right end chamber 10A, resulting in the greatest loss of coolant flowing into the adjacent chamber 110 and the highest risk of dry-sucking. During tilting, in addition to reducing the coolant flow from the left end chamber 10A into the adjacent chamber 110 through the separation of the first chamber 111 and the second chamber 112, this embodiment positions the inlet 312 in the left end chamber 10A near the left end of the partition 310. As the tilt of the left end of the chamber 100 increases relative to the right end, the coolant in each chamber 110 continuously flows to the right. As the position of the coolant inlet 312 in the left-hand region of the end chamber 10A increases, it exposes the coolant surface as early as possible, thereby cutting off the coolant flow between the first chamber 111 and the second chamber 112. Furthermore, even if the tilt of the tank 100 continues to increase, only the coolant in the first chamber 111 can flow into the adjacent first chamber 111 in the left-hand end chamber 10A, which further reduces the coolant loss in the left-hand end chamber 10A, where the risk of dry-sucking is most likely. Similarly, when the car tilts to the left, the coolant loss in the right-hand end chamber 10A, where the risk of dry-sucking is most likely, can be effectively reduced, thereby ensuring the coolant replenishment function of the end chamber 100, which is most prone to dry-sucking, and thus ensuring the stable operation of the entire expansion tank and the car.

[0042] Specifically, the width of the pot cavity 110 along the second direction is 150mm to 260mm, the distance between the partition 310 and one end plate of the pot cavity 110 along the second direction is 30mm to 40mm, and the space enclosed by the partition 310 and the end plate is the first cavity 111; preferably, the partitions 310 in each pot cavity 110 are approximately collinear.

[0043] Specifically, in this embodiment, there are two reservoir chambers 110. The liquid inlet 120 of one reservoir chamber 110 is used to connect to the battery cooling circuit, and the liquid inlet 120 of the other reservoir chamber 110 is used to connect to the motor cooling circuit. The two reservoir chambers 110 also serve as end reservoir chambers 10A.

[0044] In this embodiment, as Figures 3-5 As shown, the second partition structure 300 also includes a plurality of first baffles 320 spaced within the first cavity 111. The plurality of first baffles 320 are arranged at intervals along a first direction, and each first baffle 320 has a first connecting port 321 in its lower plate area. The plurality of first baffles 320 divide the first cavity 111 into a plurality of small cavities along the first direction, and two adjacent small cavities are connected through the first connecting port 321 of the first baffle 320 located between them, so as to ensure the communication of coolant between the cavities in the pot cavity 110; wherein, the liquid inlet 312 of the end pot cavity 10A is located in the plate area of ​​the partition 310 that forms the same end small cavity, such as the liquid inlet 312 of the left end pot cavity 10A being located in the plate area of ​​the partition 310 that forms the left end small cavity, and the liquid inlet 312 of the right end pot cavity 10A being located in the plate area of ​​the partition 310 that forms the right end small cavity.

[0045] When the car tilts to the left or right at a large angle, the coolant in the first chamber 111 flows along the first direction. The multiple first baffles 320, which are approximately perpendicular to the first direction and arranged at intervals along the first direction, act as multi-stage damping plates, effectively damping the flow of coolant. This reduces the amount of coolant flowing into the small chamber at the downward end of the first chamber 111 during the tilting process. Correspondingly, while ensuring the connection between adjacent chambers 110, it further reduces the amount of coolant lost in the upward tilting chamber 110 during the tilting process, further reducing the risk of dry suction and ensuring the regulating function of the expansion tank.

[0046] In addition to serving as a damping plate, the first baffle 320 also acts as a support liner to reinforce the kettle cavity 110, thereby improving the overall cavity and stability of the kettle cavity 110 and the expansion kettle, and reducing the occurrence of deformation of the expansion kettle.

[0047] In this embodiment, as Figures 3-5As shown, a flow-encircling plate 330 is provided inside the second cavity 112, and the flow-encircling plate 330 and the side cavity wall of the second cavity 112 together form a bent and extended flow-encircling channel 331. The bypass channel 331 is connected to the first cavity 111 through the liquid inlet 312 provided on the partition 310. When the car tilts left and right at a large angle, the coolant in the second cavity 112 is simultaneously subjected to the tilting action and the bending and guiding action of the bypass channel 331. The coolant in the second cavity 112 needs to go along the bypass channel 331 to reach the liquid inlet 312. Therefore, the coolant in the second cavity 112 flows towards the liquid inlet 312 and then flows into the first cavity 111. The flow rate is effectively reduced under the bypassing action of the bypass channel 331, thereby reducing the coolant replenishment from the second cavity 112 to the first cavity 111 during the tilting process. Correspondingly, it further reduces the coolant loss from the first cavity 111 flowing into the adjacent first cavity 111 during the tilting process, and further ensures the coolant regulation function of the expansion tank.

[0048] In this embodiment, as Figures 3-5 As shown, multiple second baffles 340 are arranged in the flow channel 331, spaced apart along the extension direction of the flow channel 331. Each second baffle 340 has a second connecting port 341 in its lower part. The second baffles 340 are set approximately perpendicular to the extension direction of the corresponding position of the flow channel 331. The multiple second baffles 340 divide the flow channel 331 into multiple small flow segments. The second connecting ports 341 are provided to ensure the flow of coolant in adjacent small flow segments and the entire flow channel. When the coolant in the second cavity 112 flows under the action of inclination, the second baffles 340 can dampen the flow of coolant, thereby further reducing the flow of coolant in the second cavity 112 under the action of inclination, and correspondingly further reducing the coolant replenishment from the second cavity 112 to the first cavity 111, thereby further ensuring the coolant regulation function of the expansion tank.

[0049] In addition to the aforementioned flow-around and damping functions, the flow-around plate 330 and the second baffle 340 also serve as support linings to reinforce the kettle cavity 110, thereby improving the strength and stability of the kettle cavity 110 and the expansion kettle, and ensuring their effective use.

[0050] Specifically, in this embodiment, as Figure 4 As shown, the second connecting port 341 is located in the lower middle region of the corresponding second baffle 340 to ensure the flow of coolant around the flow channel 331, the second cavity 112, and the entire pot cavity 110 during stable operation of the expansion tank, thereby ensuring the coolant regulation of the cooling circuit by the pot cavity 110. Specifically, the distance between the second connecting port 341 and the bottom edge of the corresponding second baffle 340 is 0mm to 5mm, and the distance between the second connecting port 341 and the upper edge and both sides of the corresponding second baffle 340 is greater than or equal to 5mm.

[0051] In addition to the through-hole design described above, the second connecting port 341 can also penetrate the corresponding second baffle 340 in the vertical direction, and reinforcing plates 350 are provided on both opposite sides of the second connecting port 341. During the flow of coolant along the flow channel 331, the angled reinforcing plates 350 and the second baffle 340 effectively dampen the flow of coolant, and the reinforcing plates 350 further enhance the supporting effect of the second baffle 340 on the tank cavity 110, thereby further improving the stability of the expansion tank.

[0052] In the second cavity 112, the second connecting port 341 located in the middle region of the pot cavity 110 adopts the form of a reinforcing plate 350 to improve the support and reinforcement of the middle region of the pot cavity 110; the second connecting port 341 located in the edge region of the pot cavity 110 adopts the form of a through hole in the lower middle part to improve the structural simplicity and ensure the reinforcement effect of the second baffle 340.

[0053] Inside the first cavity 111, such as Figures 3-5 As shown, the liquid inlet 312 and the first connecting port 321 are located in the edge region of the pot cavity 110, and the liquid inlet 312 and the first connecting port 321 are located in the lower middle region of the corresponding plate to improve the structural simplicity and ensure the reinforcing effect of the partition 310 and the first baffle 320.

[0054] In this embodiment, as Figure 3 and Figure 4 As shown, the coolant inlet 120 is located on the bottom wall of the second cavity 112 within the corresponding reservoir cavity 110, and the coolant inlet 120 is located in the middle region of the second cavity 112 along the first direction. First, the coolant inlet 120 is positioned on the bottom wall of the cavity to ensure that the coolant submerges the coolant inlet 120, reducing the risk of the coolant inlet 120 drying out, thereby ensuring the coolant inlet 120 regulates the coolant in the cooling circuit. Second, the coolant inlet 120 is positioned in the second cavity 112, where coolant loss is minimal when the expansion tank and reservoir cavity 110 tilt left and right with the vehicle, and is located in the middle region of the tilting direction. This effectively reduces the occurrence of the coolant inlet 120 being exposed due to coolant tilting and loss during tilting, thereby further reducing the risk of the coolant inlet 120 drying out, and further ensuring the coolant inlet 120 regulates the coolant in the cooling circuit.

[0055] Specifically, such as Figures 2-4 As shown, each of the liquid inlets 120 is connected to a liquid inlet connector 121, which extends to the outside of the vessel body 100 to facilitate connection with the cooling circuit.

[0056] In this embodiment, as Figures 3-5As shown, the first partition structure 200 includes a hollow partition 210 that is spaced within the pot body 100 and extends along a second direction. The first partition structure 200 uses the hollow partition 210 to divide the internal space of the pot body 100, and the hollow partition 210 separates two adjacent pot cavities 110, thereby reducing the heat transfer efficiency of the coolant in the two pot cavities 110, reducing the temperature influence of the coolant between adjacent pot cavities 110, and ensuring the stable regulation of different cooling circuits by the expansion tank.

[0057] Specifically, in this embodiment, as Figure 1 and Figure 2 As shown, the body 100 of the expansion kettle may include an upper part 10B and a lower part 10C. The upper part 10B and the lower part 10C can be individually injection molded, and the two are sealed together by welding or other operations to form the kettle body 100, thereby improving the processing convenience of the kettle body 100; correspondingly, as Figures 3-5 As shown, the hollow partition 210 of the first partition structure 200 and the partition 310, first baffle 320, flow-around plate 330, second baffle 340, reinforcing plate 350 of the second partition structure 300 all include an upper plate area located inside the upper pot 10B and a lower plate area located inside the lower pot 10C; wherein, the liquid outlet 211 is located in the upper plate area of ​​the hollow partition 210, the vent 311 is located in the upper plate area of ​​the partition 310, the liquid outlet 312 is located in the lower plate area of ​​the partition 310, the first connecting port 321 is located in the lower plate area of ​​the first baffle 320, and the second connecting port 341 is located in the lower plate area of ​​the second baffle 340.

[0058] Among them, such as Figure 1As shown, the upper pot part 10B is provided with a liquid filling port 130 in the corresponding area of ​​each pot cavity 110 and is connected to an exhaust connector 140. The exhaust connector 140 is used to connect to the exhaust end of the corresponding cooling circuit, so that the gas of the cooling circuit can be discharged into the air chamber of the corresponding pot cavity 110 through the exhaust connector 140. The liquid filling port 130 is detachably covered with a cover 150, and at least one cover 150 is provided with a pressure relief valve 151. The liquid filling port 130 is used to replenish coolant into the pot cavity 110. When the air pressure in the upper air chamber of the pot cavity 110 is too high, it can be relieved through the pressure relief valve 151. The top of the upper reservoir 10B is also equipped with a liquid level sensor 160 in the corresponding area of ​​each reservoir cavity 110. The liquid level sensor 160 extends downward through the top wall of the upper reservoir 10B into the lower reservoir 10C to detect the liquid level of the coolant in the lower reservoir 10C in real time. In the reservoir body 100, the outer wall of the upper reservoir 10B is provided with an upper liquid level 171, and the outer wall of the lower reservoir 10C is provided with a lower liquid level 172. The lower edge of the liquid outlet 211 is consistent with the upper liquid level 171. When the liquid level sensor 160 detects that the liquid level of the coolant in the reservoir cavity 110 is higher than the upper liquid level 171, the coolant in it can flow into the adjacent reservoir cavity 110 through the liquid outlet 211. When the liquid level sensor 160 detects that the liquid level of the coolant in the reservoir cavity 110 is lower than the lower liquid level 172, it indicates that the coolant level is low and coolant needs to be added to it through the liquid inlet 130.

[0059] Specifically, the flow area of ​​the liquid outlet 211 is larger than the area of ​​each liquid replenishment port 120, so as to ensure that when one of the reservoirs 110 replenishes the cooling circuit through the liquid replenishment port 120, the adjacent reservoirs 110 can replenish the coolant through the liquid outlet 211, reducing the risk of dry suction; specifically, the liquid outlet 211 can be a regular rectangle.

[0060] In this embodiment, as Figure 1 and Figure 2 As shown, both the upper part 10B and the lower part 10C of the container body 100 are provided with connecting ears 180. The connecting ears 180 are provided with connecting holes 181, and a shock-absorbing pad 190 is inserted at the connecting hole 181. When installing the expansion tank, screws or bolts can be used to pass through the through hole of the shock-absorbing pad 190 and connect to the mounting bracket of the car, thereby realizing the installation of the expansion tank and reducing the vibration transmitted from the car to the expansion tank.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An expansion kettle, characterized in that, include: Pot body (100); A first partition structure (200) is disposed within the vessel body (100), dividing the internal space of the vessel body (100) into at least two vessel cavities (110) arranged along a first direction, and each vessel cavity (110) is provided with a liquid replenishment port (120); and, The second partition structure (300) is provided in the pot cavity (110) to divide the pot cavity (110) into a first cavity (111) and a second cavity (112) arranged along the second direction and connected to each other, and the volume of the first cavity (111) is smaller than that of the second cavity (112). The first cavity (111) of each of the pot cavities (110) corresponds to each other along the first direction, and two adjacent first cavities (111) are connected through a liquid inlet (211) provided in the first partition structure (200).

2. The expansion kettle according to claim 1, characterized in that, The second partition structure (300) includes a partition (310) that is separated in the pot cavity (110) and extends along the first direction. The upper plate area of ​​the partition (310) is provided with a vent (311) and the lower plate area is provided with a liquid inlet (312). In the pot cavity (110), the two located at both ends along the first direction are called end pot cavities (10A), and the liquid inlet (312) in the end pot cavity (10A) is located at the end of the corresponding partition (310) away from the other pot cavities (110).

3. The expansion kettle according to claim 2, characterized in that, The second partition structure (300) further includes a plurality of first baffles (320) that are separated within the first cavity (111). The plurality of first baffles (320) are arranged at intervals along the first direction, and each of the first baffles (320) has a first communication port (321) in its lower plate area.

4. The expansion kettle according to any one of claims 1-3, characterized in that, The second cavity (112) is provided with a flow-encircling plate (330), and the flow-encircling plate (330) and the side cavity wall of the second cavity (112) together form a bent and extended flow-encircling channel (331).

5. The expansion kettle according to claim 4, characterized in that, The flow channel (331) is divided by a plurality of second baffles (340), which are arranged at intervals along the extension direction of the flow channel (331), and each second baffle (340) has a second connecting port (341) in its lower plate area.

6. The expansion kettle according to claim 5, characterized in that, The second communication port (341) is located in the lower middle region of the corresponding second baffle (340); Alternatively, the second connecting port (341) passes through the corresponding second baffle (340) in the vertical direction, and reinforcing plates (350) are provided on both sides of the second connecting port (341).

7. The expansion kettle according to any one of claims 1-3, characterized in that, The inlet (120) is located on the bottom wall of the second cavity (112) within the corresponding pot cavity (110), and the inlet (120) is located in the middle region of the second cavity (112) along the first direction.

8. The expansion kettle according to any one of claims 1-3, characterized in that, The first partition structure (200) includes a hollow partition (210) that is separated within the body (100) and extends along the second direction.

9. The expansion kettle according to any one of claims 1-3, characterized in that, The reservoir (110) has two chambers, one of which has a liquid inlet (120) for connecting to the battery cooling circuit, and the other of which has a liquid inlet (120) for connecting to the motor cooling circuit.

10. A car, characterized in that, It includes at least two cooling circuits and an expansion tank as described in any one of claims 1-9, wherein the liquid inlet (120) of the expansion tank is connected to one of the cooling circuits.

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