Expansion water tank shared by double systems of new energy automobile

Abstract

The invention provides an expansion water tank shared by double systems of a new energy automobile, and belongs to the technical field of expansion water tanks. Comprising a first box body and a second box body which are connected with each other, and a first gap area located between the first box body and the second box body, the top ends of the first box body and the second box body are jointly provided with a valve cover, and the bottom ends of the first box body and the second box body are communicated with each other; the device further comprises a sealing assembly, the sealing assembly is installed at the communication position of the first box body and the second box body, when the automobile is started and powered on, the first box body and the second box body are sealed, and when the automobile is powered off, the first box body and the second box body are communicated. By arranging the sealing assembly, when the sealing assembly is powered on, the electromagnet part generates magnetism, the second communication groove between the first box body and the second box body is sealed, the first box body and the second box body form two independent spaces, and therefore the two box bodies keep independent working temperatures and respective operation stability; and after electrification is stopped, the electromagnet component is powered off, and the two box bodies are communicated to mix the cooling liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion water tanks, and in particular to an expansion water tank shared by dual systems of a new energy vehicle. Background Art

[0002] New energy vehicles represent the future trend of the automotive industry. Their drive motors generate heat during operation. In order to dissipate heat effectively, the coolant circulates through the water jacket and transfers the heat to the water tank radiator. The radiator and the electronic fan are designed to be integrated. Through the acceleration of the electronic fan, the heat dissipation efficiency of the water tank is further improved to ensure that the coolant temperature is reduced to the appropriate level required for the normal operation of the drive motor. The coolant that has been heat-dissipated flows back to the drive motor to form a continuous circulation process. Various systems are equipped with corresponding expansion tanks. Taking hybrid vehicles as an example, the number of water tanks is usually 2 to 3, and sometimes even more. These water tanks occupy a large space in the car, which is not conducive to reducing the weight of the car body, and the expansion tanks in different systems need to maintain different temperatures.

[0003] There is a design of a shared expansion water tank with two chambers in the prior art, but the existing expansion water tanks are either completely separated and have independent water inlets, which is essentially two water tanks merged into one, and the addition of coolant and the observation of the liquid level are independently set; or there is one water inlet, and coolant is added to the two chambers through overflow from the water inlet, but this also results in the two chambers not being separated, and the two chambers exchange heat through the connecting point, which affects the two chambers to maintain independent working temperatures. Therefore, the present application provides a shared expansion water 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 new energy vehicle dual-system shared expansion water tank to solve the above-mentioned problem.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A new energy vehicle dual-system shared expansion water tank, comprising a first tank body and a second tank body connected to each other, and a first gap area located between the first tank body and the second tank body, a valve cover is installed on the top of the first tank body and the second tank body, and the bottom of the first tank body and the second tank body are connected to each other; it also includes a closing component, the closing component is installed at the connection between the first tank body and the second tank body, when the car is started and powered on, the first tank body and the second tank body are closed, when the car is powered off, the first tank body and the second tank body are connected; the closing component includes a fixed baffle fixedly connected to the connection between the first tank body and the second tank body, the fixed baffle is preferably set to a heat-insulating material, an installation groove and a second connecting groove are opened 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 car circuit, this is a prior art, and will not be described in detail here; one end of the fixed baffle is fixedly connected to a pair of second connecting pipes, a pair of second The pipes are all slidably connected with a fixing plate, and are all sleeved with a first spring. The fixing plate and a surface close to the fixed baffle are fixedly connected with a rubber plate, and the central part of the rubber plate is recessed toward the second connecting groove to form a notch structure; one end of the second pipe is fixedly connected with the first pipe, and the other end of the second pipe is provided with a guide hole, and the fixing baffle, the rubber plate and the fixing plate that can be adsorbed by the electromagnet component are arranged; when the vehicle is started and powered on, the electromagnet component generates magnetism, so that the fixing plate on the second pipe slides and is adsorbed on the fixed baffle, so that the second connecting groove between the first box body and the second box body is closed, so that 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, and due to the action of the first spring, the rubber plate and the fixing plate are separated from the second connecting groove, so that the two boxes are connected, and the coolant in the two boxes is mixed, so that the coolant in the two boxes is at the same level.

[0007] Preferably, the rubber plate and the notch structure are both hollow structures, and the rubber plate and the notch structure are internally connected, a surface of the notch structure close to the fixed baffle is fixedly connected with a plurality of extension pieces, the plurality of extension pieces are equidistantly arranged in a ring, and the outer walls of the plurality of extension pieces are provided with weakened grooves, when the notch structure is inserted into the second communicating groove, the weakened groove and the edge of the second communicating groove are in contact, by providing the rubber plate with a hollow structure, the notch structure and the extension piece, when the temperature of the coolant in the first box body and the second box body increases, the air pressure gradually increases, and the air pressure can squeeze the rubber plate with a hollow structure, so that the air inside the rubber plate Move toward the notch structure and the extension piece, so that the notch structure and the extension piece expand, thereby increasing 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, and when the air pressure in the second box and the first box increases, the air pressure in the second box can squeeze several extension pieces, and the extension pieces under pressure are bent and attached to the surface of the fixed baffle through the weakened groove, so that the sealing component between the first box and the second box can be prevented from detaching when the air pressure is high.

[0008] Preferably, the tops of the first box body and the second box body are fixedly connected with a connecting pipe, and the two connecting pipes are commonly fixedly connected with a liquid adding pipe, the valve cover is detachably mounted on the liquid adding pipe, a funnel is fixedly connected in the liquid adding pipe, and a guide pipe is fixedly connected at the bottom of the funnel, and a second gap area is formed between the funnel and the liquid adding pipe; a sliding groove and a first connecting groove that are connected to each other are provided in the liquid adding pipe, one end of the sliding groove is connected with the first connecting groove, and the other end of the sliding groove is connected with the connecting pipe, a pair of sealing slides are slidably connected in the sliding groove, a pair of sealing slides are slidably connected with the first connecting pipe, and a second spring is sleeved between the pair of sealing slides, the first connecting pipe and the guide pipe are fixedly connected, wherein the size of the sealing slide and the sliding groove match, and the edge of the sealing slide is preferably set to rubber material to improve the sealing performance, by setting the first connecting pipe and the second connecting pipe to be connected, and a guide hole is provided at the bottom end of the first connecting pipe, when the valve cover is opened and coolant is added to the liquid adding pipe, The coolant enters the first connecting pipe through the funnel and the guide pipe, and finally the coolant is directly introduced into the bottom of the first box body and the second box body through the guide hole at the bottom end of the first connecting pipe, so as to avoid the problem that when the coolant is poured in quickly, the coolant falls from a high place and collides to produce a large amount of foam and affect the use; in addition, a second spring and a pair of sealing slides are arranged on the first connecting pipe. In the default state, the pair of sealing slides are in the sliding groove, so that the first box body and the second box body can be independent cavities respectively. When the pressure in the first box body or the second box body increases, the second spring between the pair of sealing slides is compressed, and the sealing slide body currently under pressure enters the first connecting groove area. 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 steam pressure will remain in the second gap area and the bottom of the first connecting groove, and will be discharged into the first box body and the second box body through the connecting pipe when the sealing slide is opened next time.

[0009] Preferably, a notch is provided on one surface of the fixed baffle plate close to the rubber plate, and a snap-in strip which is plugged into the rubber plate is fixedly connected to one surface of the rubber plate close to the fixed baffle plate. By providing the snap-in strip and the notch, and both the snap-in strip and the notch are annular structures, when the rubber plate is attached to the fixed baffle plate, the snap-in strip is inserted into the notch, thereby improving the sealing ability.

[0010] Preferably, the mounting groove is connected to the outside, a first mounting frame is fixedly connected to the electromagnet component, and the first mounting frame is detachably mounted in the first gap area; a second mounting frame is fixedly connected in the connecting pipe, and the first connecting pipe is located in the second mounting frame.

[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 for Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0023] Figure 8 for Figure 4 The enlarged structural diagram at C in the middle;

[0024] Fig. 9 A schematic diagram of the three-dimensional structure of the first connecting pipe;

[0025] Fig.10 Schematic diagram of the three-dimensional structure of the fixed baffle;

[0026] Fig.11 Schematic diagram of the three-dimensional structure of the electromagnet component;

[0027] Fig.12 for Fig. 9 The enlarged structural diagram at D in the middle;

[0028] Fig.13 for Fig.10 Enlarged structural diagram at E in the middle.

[0029] Reference numerals:

[0030] 1. First housing; 2. Second housing; 3. First gap area; 4. Fixed baffle; 5. Valve cover; 6. First spring; 7. Connecting pipe; 8. Liquid adding pipe; 9. Second gap area; 10. Funnel; 11. First connecting pipe; 12. First connecting groove; 13. Guide pipe; 14. Sliding groove; 15. Sealing slide plate; 16. Second spring; 17. Second connecting pipe; 18. Guide hole; 19. Mounting groove; 20. Second connecting groove; 21. Electromagnet component; 22. Rubber sheet; 23. Notch structure; 24. Fixed plate; 25. Notch groove; 26. Insert strip; 27. Extension sheet; 28. Weakened groove; 29. ​​First mounting bracket; 30. Second mounting bracket.

[0031] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0032] The following is a detailed description of a new energy vehicle dual-system shared expansion water tank provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0033] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

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

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

[0036] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0037] like Figure 1-Figure 13As shown, an embodiment of the present invention provides a new energy vehicle dual-system shared expansion water tank, including a first tank body 1 and a second tank body 2 connected to each other, a scale is set on the first tank body 1 or the second tank body 2, and a first gap area 3 is located between the first tank body 1 and the second tank body 2. The first gap area 3 makes most of the area between the first tank body 1 and the second tank body 2 not in contact, reducing the heat exchange efficiency between the two tank bodies, which is beneficial for the two tank bodies to maintain their respective temperatures when working. The top ends of the first tank body 1 and the second tank body 2 are jointly installed with a valve cover 5, and the bottom ends of the first tank body 1 and the second tank body 2 are connected to each other; it also includes a closing component, which is installed at the connection between the first tank body 1 and the second tank body 2. When the car is started and powered on, the first tank body 1 and the second tank body 2 are closed, and when the car is powered off, the first tank body 1 and the second tank body 2 are connected.

[0038] The closing 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 set as a heat-insulating material. A mounting groove 19 and a second connecting groove 20 are provided in the fixed baffle 4. An electromagnet component 21 is installed in the mounting groove 19. The electromagnet component 21 is a prior art structure and is connected to the automobile circuit. This is a prior art and will not be described in detail here. A pair of second connecting pipes 17 are fixedly connected to one end of the fixed baffle 4. A fixed plate 24 is slidably connected to the pair of second connecting pipes 17, and a first spring 6 is sleeved on each of the pair of second connecting pipes 17. A rubber plate 22 is fixedly connected to the fixed plate 24 and a surface close to the fixed baffle 4. The central part of the rubber plate 22 is recessed toward the second connecting groove 20 to form a notch structure 23. One end of the second connecting pipe 17 is fixedly connected to the first connecting pipe 11, and a guide hole 18 is provided at the other end of the second connecting pipe 17. By setting a fixed The baffle 4, the rubber sheet 22 and the fixed plate 24 which can be adsorbed by the electromagnet component 21; when the vehicle is started and powered on, the electromagnet component 21 generates magnetism, so that the fixed plate 24 on the second connecting pipe 17 slides and is adsorbed on the fixed baffle 4, so that the second connecting groove 20 between the first box body 1 and the second box body 2 is closed, so that 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 21 is powered off, and due to the action of the first spring 6, the rubber sheet 22 and the fixed plate 24 are separated from the second connecting groove 20, so that 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, and then in actual use, it is only necessary to add coolant to one box body, and it can be closed when in use without affecting the temperature of each box body.

[0039] The rubber sheet 22 and the notch structure 23 are both hollow structures, and the rubber sheet 22 and the notch structure 23 are internally connected. A surface of the notch structure 23 close to the fixed baffle 4 is fixedly connected with a plurality of extension pieces 27, and the plurality of extension pieces 27 are arranged in an equidistant annular pattern, and the outer walls of the plurality of extension pieces 27 are provided with weakened grooves 28. When the notch structure 23 is inserted into the second communicating groove 20, the weakened groove 28 contacts the edge of the second communicating groove 20. By providing the rubber sheet 22 with a hollow structure, the notch structure 23 and the extension piece 27, when the temperature of the coolant in the first box body 1 and the second box body 2 increases, the air pressure is gradually increased, and the air pressure can squeeze the rubber sheet 22 with a hollow structure, so that the air inside the rubber sheet 22 is The air moves into the recessed structure 23 and the extension piece 27, causing the recessed structure 23 and the extension piece 27 to expand. In this way, the contact of the recessed structure 23 inserted into the second connecting 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 fixed plate 24, the extension piece 27 is in the second box body 2. When the air pressure in the second box body 2 and the first box body 1 increases, the air pressure in the second box body 2 can squeeze several extension pieces 27, and the extension pieces under pressure are bent and attached to the surface of the fixed baffle 4 through the weakened groove 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 high.

[0040] A notch groove 25 is provided on one surface of the fixed baffle plate 4 close to the rubber plate 22, and a snap-in strip 26 which is plugged into and fits with the rubber plate 22 is fixedly connected to one surface of the rubber plate 22 close to the fixed baffle plate 4. By providing the snap-in strip 26 and the notch groove 25, and both the snap-in strip 26 and the notch groove 25 are annular structures, when the rubber plate 22 is attached to the fixed baffle plate 4, the snap-in strip 26 is inserted into the notch groove 25, thereby improving the sealing ability.

[0041] The mounting groove 19 is connected to the outside, a first mounting frame 29 is fixedly connected to the electromagnet component 21, and the first mounting frame 29 can be detachably installed in the first gap area 3; a second mounting frame 30 is fixedly connected to the connecting pipe 7, and the first connecting pipe 11 is located in the second mounting frame 30.

[0042] The tops of the first box body 1 and the second box body 2 are fixedly connected to a connecting pipe 7, and a liquid adding pipe 8 is fixedly connected to the two connecting pipes 7. The valve cover 5 is detachably mounted on the liquid adding pipe 8. A funnel 10 is fixedly connected to the liquid adding pipe 8, and a guide pipe 13 is fixedly connected to the bottom 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 connecting groove 12 that are interconnected are provided in the liquid adding pipe 8, one end of the sliding groove 14 is connected to the first connecting groove 12, and the other end of the sliding groove 14 is connected to the connecting pipe 7, and the sliding groove 14 is connected to the connecting pipe 7. A pair of sealing slides 15 are slidably connected in the movable groove 14, and the pair of sealing slides 15 are slidably connected to the first connecting pipe 11, and a second spring 16 is sleeved between the pair of sealing slides 15. The first connecting pipe 11 and the guide pipe 13 are fixedly connected, wherein the sealing slide 15 and the sliding groove 14 are matched in size, and the edge of the sealing slide 15 is preferably set to a rubber material to improve the sealing performance. By setting the first connecting pipe 11 and the second connecting pipe 17 to be connected, and a guide hole 18 is opened at the bottom of the first connecting pipe 11, when the valve cover 5 is opened, the liquid is poured into the liquid filling pipe 8. When adding coolant, the coolant enters the first connecting pipe 11 through the funnel 10 and the guide pipe 13, and finally the coolant is directly introduced into the bottom of the first box body 1 and the second box body 2 through the guide hole 18 at the bottom end of the first connecting pipe 11, so as to avoid the problem that when the coolant is quickly poured in, the coolant falls from a high place and collides to produce a large amount of foam and affects the use; in addition, by arranging a second spring 16 and a pair of sealing slides 15 on the first connecting pipe 11, the pair of sealing slides 15 are in the sliding groove 14 in the default state, so that the first box body 1 and the second box body 2 can be independent cavities respectively. 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 slides 15 is compressed, and the sealing slide 15 currently under pressure enters the area of ​​the first connecting 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 steam pressure will remain in the second gap area 9 and the bottom of the first connecting groove 12, and will be discharged into the first box body 1 and the second box body 2 through the connecting pipe 7 when the sealing slide 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, and the electromagnet component 21 generates magnetism, so that the fixed plate 24 on the second connecting pipe 17 slides and is adsorbed on the fixed baffle 4, so that the second connecting groove 20 between the first box body 1 and the second box body 2 is closed, so that 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 21 is powered off, and due to the action of the first spring 6, the rubber plate 22 and the fixed plate 24 are separated from the second connecting groove 20, so that the two boxes are connected, and the coolant in the two boxes is mixed, so that the coolant in the two boxes is at the same level.

[0044] When adding coolant, the valve cover 5 of the prior art is opened, and then when coolant is added to the liquid adding pipe 8, the coolant enters the first connecting pipe 11 through the funnel 10 and the guide pipe 13, and finally the coolant is directly introduced into the bottom of the first box body 1 and the second box body 2 through the guide hole 18 at the bottom end of the first connecting pipe 11. In this way, the problem of the coolant falling from a high place and colliding to generate a large amount of foam and affecting the use can be avoided when the coolant is poured in quickly.

[0045] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but 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 about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A new energy vehicle dual-system shared expansion water tank, characterized in that: The invention comprises a first box body (1) and a second box body (2) which are connected to each other, and a first gap area (3) located between the first box body (1) and the second box body (2), wherein a valve cover (5) is installed on the top 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 connected to each other; and further comprises a sealing component which is installed at the connection point between the first box body (1) and the second box body (2), and seals the first box body (1) and the second box body (2) when the car is started and powered on, and connects the first box body (1) and the second box body (2) when the car is powered off.

2. The dual-system shared expansion water tank for new energy vehicles according to claim 1, characterized in that: The sealing assembly comprises a fixed baffle (4) fixedly connected to the connection point between the first box body (1) and the second box body (2), a mounting groove (19) and a second connecting groove (20) are provided in the fixed baffle (4), and an electromagnet component (21) is installed in the mounting groove (19); A pair of second connecting pipes (17) are fixedly connected to one end of the fixed baffle (4); a fixed plate (24) is slidably connected to the pair of second connecting pipes (17) and a first spring (6) is sleeved on the fixed plate (24) and a rubber plate (22) is fixedly connected to a surface of the fixed baffle (4) near the fixed baffle (4); a central portion of the rubber plate (22) is recessed toward the second connecting groove (20) to form a notch structure (23); One end of the second connecting pipe (17) is fixedly connected to the first connecting pipe (11), and the other end of the second connecting pipe (17) is provided with a guide hole (18).

3. A new energy vehicle dual-system shared expansion water tank according to claim 2, characterized in that: A plurality of extension pieces (27) are fixedly connected to a surface of the notch structure (23) close to the fixed baffle (4); the plurality of extension pieces (27) are arranged in an equidistant ring shape, and the outer walls of the plurality of extension pieces (27) are provided with weakened grooves (28); when the notch structure (23) is inserted into the second connecting groove (20), the weakened grooves (28) are in contact with the edges of the second connecting groove (20).

4. A new energy vehicle dual-system shared expansion water tank according to claim 3, characterized in that: A notch groove (25) is provided on a surface of the fixed baffle (4) close to the rubber plate (22), and a snap-in strip (26) which is plug-fitted with the rubber plate (22) is fixedly connected to a surface of the rubber plate (22) close to the fixed baffle (4).

5. The dual-system shared expansion water tank for new energy vehicles according to claim 4 is characterized in that: The rubber plate (22) and the notch structure (23) are both hollow structures, and the rubber plate (22) and the notch structure (23) are internally connected.

6. The dual-system shared expansion water tank for new energy vehicles according to claim 4 is characterized in that: The mounting groove (19) is in communication with the outside, a first mounting frame (29) is fixedly connected to the electromagnet component (21), and the first mounting frame (29) is detachably mounted in the first gap area (3).

7. The dual-system shared expansion water tank for new energy vehicles according to claim 4, characterized in that: The tops of the first box body (1) and the second box body (2) are both fixedly connected with a connecting pipe (7), and the two connecting pipes (7) are commonly fixedly connected with a liquid adding pipe (8), and the valve cover (5) is detachably mounted on the liquid adding pipe (8).

8. The dual-system shared expansion water tank for new energy vehicles according to claim 7 is characterized in that: A funnel (10) is fixedly connected inside the liquid adding tube (8), a flow guide tube (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 tube (8); The liquid adding pipe (8) is provided with a sliding groove (14) and a first connecting groove (12) which are connected to each other. One end of the sliding groove (14) is connected to the first connecting groove (12), and the other end of the sliding groove (14) is connected to the connecting pipe (7).

9. The dual-system shared expansion water tank for new energy vehicles according to claim 8, characterized in that: A pair of sealing slide plates (15) are slidably connected in the sliding groove (14), the pair of sealing slide plates (15) are slidably connected to the first connecting pipe (11), and a second spring (16) is sleeved between the pair of sealing slide plates (15), and the first connecting pipe (11) and the guide pipe (13) are fixedly connected.

10. A new energy vehicle dual-system shared expansion water tank according to claim 9, characterized in that: A second mounting frame (30) is fixedly connected inside the connecting pipe (7), and the first connecting pipe (11) is located inside the second mounting frame (30).

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