A double-system shared expansion water tank for new energy vehicles

Abstract

The present invention provides a double-system shared expansion tank for new energy vehicles, belonging to the technical field of expansion tanks. It includes a first box body and a second box body connected to each other, as well as a first void area located between the first box body and the second box body. A valve cover is jointly installed at the tops of the first box body and the second box body, and the bottoms of the first box body and the second box body are interconnected; it also includes a sealing component, which is installed at the connection between the first box body and the second box body, and closes the first box body and the second box body when the vehicle starts and is powered on, and connects the first box body and the second box body when the vehicle is powered off. By setting the sealing component, when powered on, the electromagnet component generates magnetism, so that the second communication groove between the first box body and the second box body is closed, and the two become two independent spaces, thereby enabling the two box bodies to maintain independent working temperatures and the stability of their respective operations; after power-off, the electromagnet component is powered off, and the two box bodies are connected to mix the coolant.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion tanks, and particularly to an expansion tank shared by dual systems of new energy vehicles. Background Art

[0002] New energy vehicles represent the future trend of the automotive industry. During the operation of their drive motors, heat is generated. To effectively dissipate heat, the coolant circulates through the water jacket to transfer the heat to the radiator of the water tank. The radiator and the electric fan are integrally designed. Through the accelerating effect of the electric fan, the heat dissipation efficiency of the water tank is further improved to ensure that the temperature of the coolant is reduced to an appropriate level required for the normal operation of the drive motor. The coolant after heat dissipation treatment flows back to the drive motor again, forming a continuous circulation process. Each system is equipped with a corresponding expansion tank. Taking a hybrid electric vehicle as an example, the number of its water tanks is usually 2 to 3, and sometimes even more. These water tanks occupy a large space in the vehicle, which is not conducive to reducing the vehicle body weight, and the expansion tanks in different systems need to maintain different temperatures.

[0003] In the prior art, there has been a design of a shared expansion tank with a dual cavity. However, in the existing expansion tanks, either there are completely separated and independent water filling ports, and such a water tank is essentially two water tanks combined into one, and the addition of coolant and the observation of the liquid level are both independently set; or there is one water filling port, and the coolant is added to the two cavities by overflowing through the water filling port, but this also results in the two cavities not being separated, and heat exchange occurs between the two cavities through the connection part, thus affecting the two cavities to maintain independent working temperatures. Therefore, the present application provides a shared expansion tank for dual systems of new energy vehicles to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a shared expansion tank for dual systems of new energy vehicles to solve the above problems.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A double-system shared expansion tank for a new energy vehicle, comprising a first box body and a second box body connected to each other, and a first gap area located between the first box body and the second box body. A valve cover is jointly installed at the tops of the first box body and the second box body, and the bottoms of the first box body and the second box body are communicated with each other; it further comprises a sealing component, which is installed at the communication part of the first box body and the second box body, and closes the first box body and the second box body when the vehicle starts and is powered on, and communicates the first box body and the second box body when the vehicle is powered off; the sealing component includes a fixed baffle fixedly connected at the communication part of the first box body and the second box body. The fixed baffle is preferably made of heat-insulating material. An installation groove and a second communication groove are formed in the fixed baffle. An electromagnet component is installed in the installation groove. The electromagnet component is a prior art structure and is connected to the vehicle circuit. This is prior art and will not be elaborated in detail here; one end of the fixed baffle is fixedly connected with a pair of second connecting pipes. A fixing plate is slidably connected to each of the pair of second connecting pipes, and a first spring is sleeved on each of them. A rubber plate is fixedly connected to the surface of the fixing plate close to the fixed baffle. The central part of the rubber plate is recessed towards the second communication groove and forms a notch structure; one end of the second connecting pipe is fixedly connected with a first connecting pipe, and a diversion hole is formed at the other end of the second connecting pipe. By setting the fixed baffle, rubber plate and the fixing plate that can be adsorbed by the electromagnet component; when the vehicle starts and is powered on, the electromagnet component generates magnetism, causing the fixing plate on the second connecting pipe to slide and adsorb on the fixed baffle, so that the second communication groove between the first box body and the second box body is closed, making the two into two independent spaces, so that the two box bodies maintain independent working temperatures and the stability of their respective operations; after the vehicle stops being powered on, the electromagnet component is powered off. Due to the action of the first spring, the rubber plate and the fixing plate are separated from the second communication groove, so that the two box bodies are communicated, and the coolant in the two box bodies is mixed, so that the coolant in the two box bodies is at the same horizontal plane.

[0007] Preferably, both the rubber plate and the notch structure are hollow structures, and the inside of the rubber plate and the notch structure is internally connected. A plurality of extension pieces are fixedly connected to one surface of the notch structure close to the fixed baffle. The plurality of extension pieces are arranged in an equidistant annular pattern, and weakening grooves are formed on the outer walls of the plurality of extension pieces. When the notch structure is inserted into the second communication groove, the weakening grooves contact the edge of the second communication groove. By providing the hollow rubber plate, the notch structure and the extension pieces, when the coolant temperatures in the first box body and the second box body increase, the air pressure gradually increases. The air pressure can squeeze the hollow rubber plate, causing the air inside the rubber plate to move into the notch structure and the extension pieces, expanding the notch structure and the extension pieces. In this way, the contact between the notch structure inserted into the second communication groove can be increased, thereby improving the sealing effect. On the other hand, when the rubber plate in the first box body is adsorbed on the fixed baffle through the fixing plate, the extension pieces are located in the second box body. When the air pressures in both the second box body and the first box body increase, the air pressure in the second box body can squeeze the plurality of extension pieces. The extension pieces under pressure are bent through the weakening grooves and adhere to the surface of the fixed baffle, so as to prevent the sealing component between the first box body and the second box body from detaching when the air pressure is relatively high.

[0008] Preferably, communication pipes are fixedly connected to the tops of the first box body and the second box body. A liquid adding pipe is fixedly connected to the two communication pipes. A valve cover is detachably installed on the liquid adding pipe. A funnel is fixedly connected inside the liquid adding pipe. A diversion pipe is fixedly connected to the bottom end of the funnel. A second gap area is formed between the funnel and the liquid adding pipe. A sliding groove and a first communication groove that communicate with each other are formed inside the liquid adding pipe. One end of the sliding groove communicates with the first communication groove, and the other end of the sliding groove communicates with the communication pipe. A pair of sealing sliding plates are slidably connected inside the sliding groove. The pair of sealing sliding plates are slidably connected to the first connection pipe, and a second spring is sleeved between the pair of sealing sliding plates. The first connection pipe is fixedly connected and communicated with the diversion pipe. The sealing sliding plates and the sliding groove are matched in size, and the edges of the sealing sliding plates are preferably made of rubber material to improve the sealing performance. By setting the connection between the first connection pipe and the second connection pipe, and a diversion hole is provided at the bottom end of the first connection pipe. When the valve cover is opened and coolant is added into the liquid adding pipe, the coolant enters the first connection pipe through the funnel and the diversion pipe, and finally the coolant is directly introduced into the bottoms of the first box body and the second box body through the diversion hole at the bottom end of the first connection pipe. In this way, when pouring the coolant quickly, the problem that a large amount of foam is generated due to the collision of the coolant falling from a high place and affecting the use can be avoided. In addition, by providing the second spring and the pair of sealing sliding plates on the first connection pipe, the pair of sealing sliding plates are in the sliding groove in the default state, so that the first box body and the second box body are independent cavities. When the pressure in the first box body or the second box body increases, the second spring between the pair of sealing sliding plates is compressed, and the sealing sliding plate under pressure enters the area of the first communication groove. At this time, the pressure in the box body can enter the liquid adding pipe and be released through the valve cover. The condensed water generated by the release of the steam pressure will remain at the bottom of the second gap area and the first communication groove, and will be discharged into the first box body and the second box body through the communication pipe when the sealing sliding plate is opened next time.

[0009] Preferably, a notch groove is formed on one surface of the fixed baffle close to the rubber plate. A clamping strip that is inserted and matched with the rubber plate is fixedly connected to one surface of the rubber plate close to the fixed baffle. By providing the clamping strip and the notch groove, and both the clamping strip and the notch groove are annular structures. When the rubber plate fits the fixed baffle, the clamping strip is inserted into the notch groove, so as to improve the sealing ability.

[0010] Preferably, the installation groove communicates with the outside. A first mounting bracket is fixedly connected to the electromagnet component, and the first mounting bracket is detachably installed in the first gap area. A second mounting bracket is fixedly connected inside the communication pipe, and the first connection pipe is located inside the second mounting bracket.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects:

[0012] The present invention provides a sealing component. When the vehicle is started and powered on, the electromagnet component generates magnetism, so that the second communication groove between the first box body and the second box body is closed, and the two become two independent spaces, so that the two boxes maintain independent working temperatures and the stability of their respective operations; after the vehicle stops being powered on, the electromagnet component is powered off, the two boxes are connected, and the coolants in the two boxes are mixed, so that the coolants in the two boxes are at the same level. In actual use, it is only necessary to add coolant to one box body, and the liquid level can be observed intuitively. It is closed when in use, and the temperature of each cavity is not affected.

[0013] By providing a rubber plate with a hollow structure, a notch structure and an extension piece, when the temperature of the coolant in the first box and the second box rises, the air pressure gradually increases, and the air pressure can squeeze and expand the rubber plate with the hollow structure, and can increase the contact of the notch structure inserted into the second connecting groove, thereby improving the sealing effect; on the other hand, when the rubber plate in the first box is adsorbed on the fixed baffle through the fixed plate, the extension piece is in the second box. When the air pressure in the second box and the first box increases, the air pressure in the second box can squeeze a number of extension pieces, and the extension pieces under pressure are bent and attached to the surface of the fixed baffle through the weakened groove. In this way, the sealing component between the first box and the second box can be prevented from detaching when the air pressure is high.

[0014] By arranging the first pipe to be connected with the second pipe and opening a guide hole at the bottom end of the first pipe, the problem that when the coolant is poured in quickly, the coolant falls from a high place and collides to generate a large amount of foam and affect the use can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a dual-system shared expansion water tank for a new energy vehicle;

[0017] Figure 2 It is a schematic diagram of the first cross-sectional structure of a dual-system shared expansion water tank for a new energy vehicle;

[0018] Figure 3 It is a schematic diagram of the second cross-sectional structure of a new energy vehicle dual-system shared expansion water tank;

[0019] Figure 4 It is a schematic diagram of the third cross-sectional structure of a dual-system shared expansion water tank for a new energy vehicle;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the funnel;

[0021] Figure 6 is Figure 2 The enlarged structural schematic diagram at position A in

[0022] Figure 7 is Figure 6 The enlarged structural schematic diagram at position B in

[0023] Figure 8 is Figure 4 The enlarged structural schematic diagram at position C in

[0024] Figure 9 The three - dimensional structural schematic diagram of the first connecting pipe

[0025] Figure 10 The three - dimensional structural schematic diagram of the fixed baffle

[0026] Figure 11 The three - dimensional structural schematic diagram of the electromagnet component

[0027] Figure 12 is Figure 9 The enlarged structural schematic diagram at position D in

[0028] Figure 13 is Figure 10 The enlarged structural schematic diagram at position E in

[0029] Reference numerals:

[0030] 1. First box body; 2. Second box body; 3. First void area; 4. Fixed baffle; 5. Valve cover; 6. First spring; 7. Connecting pipe; 8. Liquid adding pipe; 9. Second void area; 10. Funnel; 11. First connecting pipe; 12. First communication groove; 13. Diversion pipe; 14. Sliding groove; 15. Sealing slide plate; 16. Second spring; 17. Second connecting pipe; 18. Diversion hole; 19. Installation groove; 20. Second communication groove; 21. Electromagnet component; 22. Rubber plate; 23. Notch structure; 24. Fixed plate; 25. Notch groove; 26. Insertion strip; 27. Extension piece; 28. Weakening groove; 29. First mounting bracket; 30. Second mounting bracket.

[0031] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0032] The following will describe in detail a dual-system shared expansion tank for a new energy vehicle provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0033] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0034] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0035] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0036] In addition, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or more elements or features, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0037] As Figures 1 - 13As shown, an embodiment of the present invention provides a double-system shared expansion tank for a new energy vehicle, which includes a first box body 1 and a second box body 2 connected to each other. A scale is provided on the first box body 1 or the second box body 2, and a first gap area 3 is located between the first box body 1 and the second box body 2. The first gap area 3 makes most of the area between the first box body 1 and the second box body 2 not in contact, reducing the heat exchange efficiency between the two box bodies and facilitating the two box bodies to maintain their respective temperatures during operation. A valve cover 5 is jointly installed at the tops of the first box body 1 and the second box body 2, and the bottoms of the first box body 1 and the second box body 2 are interconnected; a sealing component is further included, and the sealing component is installed at the connection between the first box body 1 and the second box body 2 to seal the first box body 1 and the second box body 2 when the vehicle starts and is powered on, and to connect the first box body 1 and the second box body 2 when the vehicle is powered off.

[0038] The sealing component includes a fixed baffle 4 fixedly connected to the connection between the first box body 1 and the second box body 2. The fixed baffle 4 is preferably made of heat-insulating material. An installation groove 19 and a second communication groove 20 are formed in the fixed baffle 4. An electromagnet component 21 is installed in the installation groove 19. The electromagnet component 21 is a structure of the prior art and is connected to the vehicle circuit. This is the prior art and will not be elaborated in detail here; one end of the fixed baffle 4 is fixedly connected with a pair of second connecting pipes 17. A fixing plate 24 is slidably connected to each of the pair of second connecting pipes 17, and a first spring 6 is sleeved on each of them. A rubber plate 22 is fixedly connected to the surface of the fixing plate 24 close to the fixed baffle 4. The central part of the rubber plate 22 is recessed towards the second communication groove 20 and forms a notch structure 23; one end of the second connecting pipe 17 is fixedly connected with a first connecting pipe 11, and a diversion hole 18 is formed at the other end of the second connecting pipe 17. By providing the fixed baffle 4, the rubber plate 22 and the fixing plate 24 that can be adsorbed by the electromagnet component 21; when the vehicle starts and is powered on, the electromagnet component 21 generates magnetism, causing the fixing plate 24 on the second connecting pipe 17 to slide and adsorb on the fixed baffle 4, so that the second communication groove 20 between the first box body 1 and the second box body 2 is closed, making the two into two independent spaces, so that the two box bodies maintain independent working temperatures and the stability of their respective operations; after the vehicle stops being powered on, the electromagnet component 21 is powered off. Due to the action of the first spring 6, the rubber plate 22 and the fixing plate 24 are separated from the second communication groove 20, so that the two box bodies are connected, and the coolant in the two box bodies is mixed, so that the coolant in the two box bodies is at the same horizontal level. Furthermore, in actual use, it is only necessary to add coolant to one box body, and it can be sealed during use without affecting their respective temperatures.

[0039] Both the rubber plate 22 and the notch structure 23 are hollow structures, and the interiors of the rubber plate 22 and the notch structure 23 are connected. A plurality of extension pieces 27 are fixedly connected to one surface of the notch structure 23 close to the fixed baffle 4. The plurality of extension pieces 27 are arranged in an equidistant annular pattern, and weakening grooves 28 are formed on the outer walls of the plurality of extension pieces 27. When the notch structure 23 is inserted into the second communication groove 20, the weakening grooves 28 are in contact with the edge of the second communication groove 20. By providing the hollow rubber plate 22, the notch structure 23 and the extension pieces 27, when the coolant temperature in the first box body 1 and the second box body 2 increases, the air pressure gradually increases. The air pressure can squeeze the hollow rubber plate 22, causing the air inside the rubber plate 22 to move into the notch structure 23 and the extension pieces 27, expanding the notch structure 23 and the extension pieces 27. In this way, the contact between the notch structure 23 inserted into the second communication groove 20 can be increased, thereby improving the sealing effect. On the other hand, when the rubber plate 22 in the first box body 1 is adsorbed on the fixed baffle 4 through the fixing plate 24, the extension pieces 27 are located in the second box body 2. When the air pressures in both the second box body 2 and the first box body 1 increase, the air pressure in the second box body 2 can squeeze the plurality of extension pieces 27, causing the extension pieces 27 under pressure to bend and adhere to the surface of the fixed baffle 4 through the weakening grooves 28. In this way, the sealing component between the first box body 1 and the second box body 2 can be prevented from detaching when the air pressure is relatively high.

[0040] A notch groove 25 is formed on one surface of the fixed baffle 4 close to the rubber plate 22. A clamping strip 26 that is inserted and matched with the rubber plate 22 is fixedly connected to one surface of the rubber plate 22 close to the fixed baffle 4. By providing the clamping strip 26 and the notch groove 25, and both the clamping strip 26 and the notch groove 25 are annular structures, when the rubber plate 22 fits against the fixed baffle 4, the clamping strip 26 is inserted into the notch groove 25, thus improving the sealing ability.

[0041] The installation groove 19 communicates with the outside. A first mounting bracket 29 is fixedly connected to the electromagnet component 21, and the first mounting bracket 29 is detachably mounted in the first gap area 3. A second mounting bracket 30 is fixedly connected in the connecting pipe 7, and the first connecting pipe 11 is located in the second mounting bracket 30.

[0042] A communicating pipe 7 is fixedly connected to the top ends of both the first box body 1 and the second box body 2. A liquid adding pipe 8 is fixedly connected to the two communicating pipes 7 together. A valve cover 5 is detachably installed on the liquid adding pipe 8. A funnel 10 is fixedly connected inside the liquid adding pipe 8. A flow guide pipe 13 is fixedly connected to the bottom end of the funnel 10. A second gap area 9 is formed between the funnel 10 and the liquid adding pipe 8. A sliding groove 14 and a first communication groove 12 which are communicated with each other are formed inside the liquid adding pipe 8. One end of the sliding groove 14 is communicated with the first communication groove 12, and the other end of the sliding groove 14 is communicated with the communicating pipe 7. A pair of sealing slide plates 15 are slidably connected inside the sliding groove 14. The pair of sealing slide plates 15 are slidably connected with a first connecting pipe 11, and a second spring 16 is sleeved between the pair of sealing slide plates 15. The first connecting pipe 11 is fixedly communicated with the flow guide pipe 13. The sealing slide plate 15 and the sliding groove 14 are matched in size, and the edge of the sealing slide plate 15 is preferably made of rubber material to improve the sealing performance. By arranging the connection between the first connecting pipe 11 and the second connecting pipe 17, and a flow guide hole 18 is formed at the bottom end of the first connecting pipe 11. When the valve cover 5 is opened and coolant is added into the liquid adding pipe 8, the coolant enters the first connecting pipe 11 through the funnel 10 and the flow guide pipe 13, and finally the coolant is directly introduced into the bottoms of the first box body 1 and the second box body 2 through the flow guide hole 18 at the bottom end of the first connecting pipe 11. In this way, when the coolant is quickly poured in, the problem that a large amount of foam is generated due to the collision of the coolant falling from a high place and affecting the use can be avoided. In addition, by arranging the second spring 16 and the pair of sealing slide plates 15 on the first connecting pipe 11, the pair of sealing slide plates 15 are in the sliding groove 14 in the default state, so that the first box body 1 and the second box body 2 are independent cavities. When the pressure in the first box body 1 or the second box body 2 increases, the second spring 16 between the pair of sealing slide plates 15 is compressed, and the sealing slide plate 15 under the current pressure enters the area of the first communication groove 12. At this time, the pressure in the box body can enter the liquid adding pipe 8 and be released through the valve cover 5. The condensed water generated by the release of the steam pressure will remain at the bottom of the second gap area 9 and the first communication groove 12, and is discharged into the first box body 1 and the second box body 2 through the communicating pipe 7 when the sealing slide plate 15 is opened next time.

[0043] The working principle of the technical solution provided by the present invention is as follows: When in use, the vehicle is started and powered on, the electromagnet component 21 generates magnetism, so that the fixing plate 24 on the second connecting pipe 17 slides and adsorbs on the fixed baffle 4, so that the second communication groove 20 between the first box body 1 and the second box body 2 is closed, making the two into two independent spaces, so as to keep the two box bodies at independent working temperatures and the stability of their respective operations; After the vehicle stops being powered on, the electromagnet component 21 is powered off. Due to the action of the first spring 6, the rubber plate 22 and the fixing plate 24 are separated from the second communication groove 20, so that the two box bodies are communicated, and the coolant in the two box bodies is mixed, so that the coolant in the two box bodies is at the same horizontal plane.

[0044] When adding coolant, open the valve cover 5 of the prior art, and then when adding coolant into the liquid adding pipe 8, the coolant enters the first connecting pipe 11 through the funnel 10 and the diversion pipe 13, and finally the coolant is directly introduced into the bottoms of the first box body 1 and the second box body 2 through the diversion holes 18 at the bottom end of the first connecting pipe 11. In this way, it is possible to avoid the problem that when the coolant is quickly poured in, a large amount of foam is generated due to the collision of the coolant falling from a high place, which affects the use.

[0045] The present invention covers any alternatives, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0046] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A double-system shared expansion water tank for a new energy vehicle, characterized in that It includes a first box body (1) and a second box body (2) which are connected to each other, and a first void area (3) located between the first box body (1) and the second box body (2). A valve cover (5) is commonly installed at the top ends of the first box body (1) and the second box body (2), and the bottom ends of the first box body (1) and the second box body (2) are communicated with each other; it further includes a sealing component which is installed at the communication part of the first box body (1) and the second box body (2) to seal the first box body (1) and the second box body (2) when the vehicle is started and powered on, and to communicate the first box body (1) and the second box body (2) when the vehicle is powered off. The sealing component includes a fixed baffle (4) fixedly connected to the communication part of the first box body (1) and the second box body (2). An installation groove (19) and a second communication groove (20) are formed in the fixed baffle (4), and an electromagnet component (21) is installed in the installation groove (19). One end of the fixed baffle (4) is fixedly connected with a pair of second connecting pipes (17). A fixing plate (24) is slidably connected to each of the pair of second connecting pipes (17), and a first spring (6) is sleeved on each of them. The fixing plate (24) can be adsorbed by the electromagnet component (21). A rubber plate (22) is fixedly connected to one surface of the fixing plate (24) close to the fixed baffle (4). The central part of the rubber plate (22) is recessed towards the second communication groove (20) to form a notch structure (23). One end of the second connecting pipe (17) is fixedly connected with a first connecting pipe (11). Coolant enters the first connecting pipe (11), and a diversion hole (18) is formed at the other end of the second connecting pipe (17).

2. The expansion water tank shared by the dual systems of a new energy vehicle according to claim 1, characterized in that, A plurality of extension pieces (27) are fixedly connected to one surface of the notch structure (23) close to the fixed baffle (4). The plurality of extension pieces (27) are arranged in an equidistant annular pattern, and weakening grooves (28) are formed on the outer walls of the plurality of extension pieces (27). When the notch structure (23) is inserted into the second communication groove (20), the weakening grooves (28) are in contact with the edge of the second communication groove (20).

3. The double-system shared expansion water tank for a new energy vehicle according to claim 2, characterized in that, A notch groove (25) is formed on one surface of the fixed baffle (4) close to the rubber plate (22), and a clamping strip (26) which is in plug-in fit with the rubber plate (22) is fixedly connected to one surface of the rubber plate (22) close to the fixed baffle (4).

4. A double-system shared expansion water tank for a new energy vehicle according to claim 3, characterized in that, Both the rubber plate (22) and the notch structure (23) are hollow structures, and the interiors of the rubber plate (22) and the notch structure (23) are communicated with each other.

5. A dual-system shared expansion water tank for a new energy vehicle according to claim 3, characterized in that, The installation groove (19) is communicated with the outside. A first mounting frame (29) is fixedly connected to the electromagnet component (21), and the first mounting frame (29) is detachably installed in the first void area (3).

6. The double-system shared expansion water tank for a new energy vehicle according to claim 3, characterized in that, A communication pipe (7) is fixedly connected to the top ends of both the first box body (1) and the second box body (2). A liquid adding pipe (8) is fixedly connected to the two communication pipes (7), and the valve cover (5) is detachably installed on the liquid adding pipe (8).

7. A double-system shared expansion water tank for a new energy vehicle according to claim 6, characterized in that, A funnel (10) is fixedly connected inside the liquid adding pipe (8), a flow guide pipe (13) is fixedly connected to the bottom end of the funnel (10), and a second gap area (9) is formed between the funnel (10) and the liquid adding pipe (8); A sliding groove (14) and a first communication groove (12) which communicate with each other are formed inside the liquid adding pipe (8), one end of the sliding groove (14) communicates with the first communication groove (12), and the other end of the sliding groove (14) communicates with the communication pipe (7).

8. A double-system shared expansion water tank for a new energy vehicle according to claim 7, characterized in that, A pair of sealing sliding plates (15) are slidably connected inside the sliding groove (14), the pair of sealing sliding plates (15) are slidably connected with the first connection pipe (11), and a second spring (16) is sleeved between the pair of sealing sliding plates (15). The first connection pipe (11) is fixedly communicated with the flow guide pipe (13).

9. A double-system shared expansion water tank for a new energy vehicle according to claim 8, characterized in that, A second mounting bracket (30) is fixedly connected inside the communication pipe (7), and the first connection pipe (11) is located inside the second mounting bracket (30).

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