Integrated fluid filling system and vehicle

Abstract

The application relates to an integrated liquid filling system and a vehicle. When the integrated liquid filling system is in a liquid filling state, a liquid inlet channel is communicated with a cavity on one side of a priority valve core close to the priority valve core, so that the liquid inlet channel is communicated with a liquid filling channel, the liquid filling channel is communicated with a cavity on one side of a second sliding valve core away from a first sliding valve core, when the first sliding valve core moves to block the liquid inlet channel and the cavity on one side of the first sliding valve core away from a first elastic member, pressure oil pushes the second sliding valve core to drive the first sliding valve core to continuously compress the first elastic member. When the first sliding valve core moves to a first preset position, a cavity on one side of the priority valve core close to a priority valve elastic member is communicated with a return oil channel through a cavity on one side of the first sliding valve core away from the first elastic member, so that the pressure oil pushes the priority valve core to compress the priority valve elastic member, and the liquid inlet channel is communicated with a working channel. The integrated liquid filling system and the vehicle provided by the application solve the problems that a small pump increases the cost of a whole vehicle and occupies the assembly space of the whole vehicle.

Description

Technical Field

[0001] This application relates to the field of hydraulic control system technology, and in particular to an integrated fluid filling system and vehicle. Background Technology

[0002] Traditional vehicle hydraulic systems typically use a separate small pump to fill the filling valve. After the filling valve completes filling, the oil returns to the oil tank. When the accumulator pressure drops, filling continues, and this cycle continues. However, the separate small pump increases the overall cost of the vehicle and occupies more assembly space. Summary of the Invention

[0003] Therefore, it is necessary to provide an integrated fluid filling system and vehicle to solve the problem that the existing separate installation of small pumps increases the overall vehicle cost and occupies the vehicle assembly space.

[0004] The integrated filling system provided in this application includes a valve body, a priority valve core, a priority valve elastic element, a movable plug, a first sliding valve core, a second sliding valve core, a first elastic element, and a second elastic element. The valve body has an inlet channel, a filling channel, a working channel, a return channel, a priority valve chamber, and a slide valve chamber. The priority valve elastic element is located at one end of the priority valve chamber, and the movable plug is located at the other end of the priority valve chamber. One end of the priority valve core is connected to the priority valve elastic element, and the other end is axially fitted with the movable plug along the priority valve chamber. The first elastic element is located at one end of the slide valve chamber, and the second elastic element is located at the other end of the slide valve chamber. The first elastic element is connected to the second elastic element sequentially through the first and second sliding valve cores. When the integrated filling system is in the filling state, the inlet channel connects to the cavity on the side of the movable plug closest to the priority valve core, so that the pressurized oil can push the movable plug open and connect the inlet channel to the filling channel. The inlet channel also connects to the cavity on the side of the first sliding valve core away from the first elastic element, so that the pressurized oil can push the first sliding valve core to compress the first elastic element. The filling channel connects to the cavity on the side of the second sliding valve core opposite to the first sliding valve core. When the first sliding valve core moves to the point where it blocks the inlet channel and the cavity on the side of the first sliding valve core opposite to the first elastic element, the pressurized oil can push the second sliding valve core to continue compressing the first elastic element. The cavity on the side of the priority valve core near the elastic element of the priority valve core connects to the cavity on the side of the first sliding valve core opposite to the first elastic element. When the first sliding valve core moves to the first preset position, the cavity on the side of the priority valve core near the elastic element of the priority valve core connects to the return oil channel through the cavity on the side of the first sliding valve core opposite to the first elastic element, so that the pressurized oil can push the priority valve core to compress the elastic element of the priority valve core and connect the inlet channel to the working channel.

[0005] In one embodiment, the priority valve core is provided with a first axial oil passage and a first radial oil passage that are interconnected, and the inlet channel can sequentially connect to the cavity on one side of the movable plug near the priority valve core through the first radial oil passage and the first axial oil passage.

[0006] In one embodiment, the priority valve core is further provided with a sixth radial oil passage that connects to the first axial oil passage. The flow area of ​​the sixth radial oil passage is smaller than that of the first radial oil passage. When the pressure oil pushes the priority valve core to compress the priority valve elastic element to the second preset position, the first axial oil passage can sequentially connect to the return oil passage through the sixth radial oil passage, the cavity on the side of the priority valve core near the priority valve elastic element, and the cavity on the side of the first sliding valve core away from the first elastic element.

[0007] In one embodiment, the priority valve core is further provided with a second radial oil passage that connects to the first axial oil passage, and the valve body is provided with a first connecting oil passage. The first axial oil passage can sequentially connect to the cavity on the side of the first sliding valve core away from the first elastic member through the second radial oil passage and the first connecting oil passage.

[0008] In one embodiment, a valve sleeve is provided on the outer side of the first sliding valve core. The valve sleeve is fixed in the sliding valve cavity. The valve sleeve is provided with a through hole connecting the first connecting oil passage and the first sliding valve core. The first sliding valve core is provided with a second axial oil passage and a third radial oil passage and a fourth radial oil passage respectively connecting the second axial oil passage. The first connecting oil passage can sequentially pass through the sliding valve cavity, the through hole, the fourth radial oil passage, the second axial oil passage and the third radial oil passage to connect to the cavity on the side of the first sliding valve core away from the first elastic member.

[0009] In one embodiment, the first sliding valve core is further provided with a fifth radial oil passage that connects to the second axial oil passage. The cavity on the side of the first sliding valve core away from the first elastic element can be connected to the return oil passage in sequence through the third radial oil passage, the second axial oil passage, the fifth radial oil passage and the sliding valve cavity.

[0010] In one embodiment, the valve body is provided with a second connecting oil passage, and the filling channel can connect to the cavity on the side of the second sliding valve core opposite to the first sliding valve core through the second connecting oil passage.

[0011] In one embodiment, the oil return channel is located on the side of the first elastic element opposite to the first sliding valve core.

[0012] In one embodiment, the valve elastic element, the first elastic element, and the second elastic element are all compression springs.

[0013] This application also provides a vehicle that includes the integrated liquid filling system described in any of the above embodiments.

[0014] Compared with the prior art, the integrated liquid filling system and vehicle provided in this application use pressurized oil in the liquid inlet channel to fill the accumulator without the need to set up a separate small pump to fill the accumulator, thereby effectively reducing the production cost of the integrated liquid filling system and vehicle and reducing the assembly space required for the vehicle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A cross-sectional view of an integrated liquid filling system according to an embodiment of this application;

[0017] Figure 2 for Figure 1 An enlarged view of point A shown;

[0018] Figure 3 A piping diagram of an integrated liquid filling system according to an embodiment of this application.

[0019] Reference numerals: 100, valve body; 110, inlet channel; 120, filling channel; 130, working channel; 140, return channel; 150, primary valve chamber; 160, spool valve chamber; 170, first connecting oil passage; 180, second connecting oil passage; 200, primary valve core; 210, first axial oil passage; 220, first radial oil passage; 230, second radial oil passage; 240, sixth radial oil passage; 300, first sliding valve core; 310, second axial oil passage; 320, third radial oil passage; 330, fourth radial oil passage; 340, fifth radial oil passage; 400, valve sleeve; 410, through hole; 500, primary valve elastic element; 600, movable plug; 700, second sliding valve core; 800, first elastic element; 900, second elastic element. Detailed Implementation

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Traditional vehicle hydraulic systems typically use a separate small pump to fill the filling valve. After the filling valve completes filling, the oil returns to the oil tank. When the accumulator pressure drops, filling continues, and this cycle continues. However, the separate small pump increases the overall cost of the vehicle and occupies more assembly space.

[0027] Please see Figures 1-3 To address the issue that separate small pumps increase vehicle cost and occupy assembly space, this application provides an integrated fluid filling system and vehicle. The integrated fluid filling system includes a valve body 100, a priority valve core 200, a superior valve elastic element 500, a movable plug 600, a first sliding valve core 300, a second sliding valve core 700, a first elastic element 800, and a second elastic element 900. The valve body 100 has an inlet channel 110, a filling channel 120, a working channel 130, a return channel 140, a superior valve chamber 150, and a sliding valve chamber 160. The filling channel 120 connects to an accumulator, and the working channel 130 connects to a working valve plate.

[0028] The elastic element 500 of the superior valve is located at one end of the superior valve cavity 150, and the movable plug 600 is located at the other end of the superior valve cavity 150. One end of the priority valve core 200 is connected to the elastic element 500 of the superior valve, and the other end is movably engaged with the movable plug 600 along the axial direction of the superior valve cavity 150.

[0029] The first elastic element 800 is disposed at one end of the slide valve cavity 160, and the second elastic element 900 is disposed at the other end of the slide valve cavity 160. The first elastic element 800 is connected to the second elastic element 900 in sequence through the first sliding valve core 300 and the second sliding valve core 700.

[0030] Specifically, in one embodiment, the valve elastic element 500, the first elastic element 800, and the second elastic element 900 are all compression springs, but not limited thereto. In other embodiments, the valve elastic element 500, the first elastic element 800, and the second elastic element 900 can also be metal springs.

[0031] When the integrated filling system is in the filling state, the inlet channel 110 connects to the cavity of the movable plug 600 near the priority valve core 200, so that the pressurized oil pushes open the movable plug 600 and connects the inlet channel 110 to the filling channel 120 to replenish the accumulator. Furthermore, the inlet channel 110 connects to the cavity of the first sliding valve core 300 away from the first elastic member 800, so that the pressurized oil pushes the first sliding valve core 300 toward the first elastic member 800 and compresses the first elastic member 800 until the first sliding valve core 300 blocks the inlet channel 110 and the cavity of the first sliding valve core 300 away from the first elastic member 800. The filling channel 120 connects to the cavity on the side of the second sliding valve core 700 away from the first sliding valve core 300. Then, pressurized oil pushes the second sliding valve core 700, causing the first sliding valve core 300 to move towards the first elastic member 800 and continue compressing the first elastic member 800 until the cavity on the side of the first sliding valve core 300 away from the first elastic member 800 connects to the return oil channel 140. Furthermore, the cavity on the side of the priority valve core 200 near the priority valve elastic member 500 is always connected to the cavity on the side of the first sliding valve core 300 away from the first elastic member 800. When the first sliding valve core 300... When moved to the first preset position, the pressurized oil in the cavity of the priority valve core 200 near the elastic element 500 enters the return oil channel 140 through the cavity of the first sliding valve core 300 away from the first elastic element 800. This causes the hydraulic pressure in the cavity of the priority valve core 200 near the elastic element 500 to drop, thereby causing the pressurized oil to push the priority valve core 200 toward the elastic element 500 and compress the elastic element 500. During the compression of the elastic element 500, the priority valve core 200 connects the inlet channel 110 to the working channel 130. That is, the integrated filling system first uses the inlet channel 110 to complete the filling of the accumulator, and then connects the inlet channel 110 to the working channel 130.

[0032] After the accumulator has been used multiple times, the hydraulic pressure in the accumulator channel drops below a preset value. At this time, the hydraulic pressure in the cavity on the side of the second sliding valve core 700 away from the first sliding valve core 300 decreases. The first elastic element 800 pushes the first sliding valve core 300, causing the second sliding valve core 700 to move away from itself until the first sliding valve core 300 disconnects the cavity on the side of the first sliding valve core 300 away from the first elastic element 800 from the return oil channel 140. At this time, the cavity on the side of the priority valve core 200 near the priority valve elastic element 500 is no longer connected to the return oil channel 140. Furthermore, the inlet channel 110 is reconnected to the cavity on the side of the first sliding valve core 300 away from the first elastic element 800. One side cavity of the elastic element 800, that is, the inlet channel 110, is connected to the side cavity of the priority valve core 200 near the superior valve elastic element 500 through the side cavity of the first sliding valve core 300 away from the first elastic element 800. In this way, the hydraulic pressure of the side cavity of the priority valve core 200 near the superior valve elastic element 500 gradually increases, so as to push the priority valve core 200 to move away from the superior valve elastic element 500, so that the inlet channel 110 connects to the side cavity of the movable plug 600 near the priority valve core 200, thereby causing the pressurized oil to push open the movable plug 600 and connect the inlet channel 110 to the filling channel 120 to replenish the accumulator again.

[0033] As can be seen from the above, the integrated filling system provided in this application uses pressurized oil in the inlet channel 110 to fill the accumulator without the need for a separate small pump to fill the accumulator, thereby effectively reducing the production cost of the integrated filling system and the vehicle and reducing the assembly space required for the vehicle.

[0034] In one embodiment, such as Figures 1-3 As shown, the priority valve core 200 is provided with a first axial oil passage 210 and a first radial oil passage 220 that are interconnected. The liquid inlet channel 110 can sequentially connect the movable plug 600 to the cavity on one side of the priority valve core 200 through the first radial oil passage 220 and the first axial oil passage 210.

[0035] This design improves the flow efficiency of the pressurized oil, and by setting an oil passage inside the priority valve core 200, it reduces the space occupied by the oil passage in the integrated flushing system, which is beneficial for the miniaturization of the integrated flushing system.

[0036] Furthermore, in one embodiment, such as Figures 1-3 As shown, the priority valve core 200 is also provided with a second radial oil passage 230 that connects to the first axial oil passage 210. The second radial oil passage 230 is located on the side of the first radial oil passage 220 near the movable plug 600. Furthermore, the valve body 100 is provided with a first connecting oil passage 170. The first axial oil passage 210 can connect to the cavity on the side of the first sliding valve core 300 away from the first elastic member 800 through the second radial oil passage 230 and the first connecting oil passage 170 in sequence.

[0037] Specifically, in one embodiment, such as Figures 1-3 As shown, a valve sleeve 400 is provided on the outer side of the first sliding valve core 300. The valve sleeve 400 is fixed in the sliding valve cavity 160. The valve sleeve 400 is provided with a through hole 410 connecting the first connecting oil passage 170 and the first sliding valve core 300. The first sliding valve core 300 is provided with a second axial oil passage 310 and a third radial oil passage 320 and a fourth radial oil passage 330 respectively connecting the second axial oil passage 310. The third radial oil passage 320 is located on the side of the fourth radial oil passage 330 close to the second sliding valve core 700. The first connecting oil passage 170 can sequentially pass through the sliding valve cavity 160, the through hole 410, the fourth radial oil passage 330, the second axial oil passage 310 and the third radial oil passage 320 to connect to the cavity on the side of the first sliding valve core 300 away from the first elastic member 800.

[0038] More specifically, in one embodiment, such as Figures 1-3 As shown, the first sliding valve core 300 is also provided with a fifth radial oil passage 340 that connects to the second axial oil passage 310. The fifth radial oil passage 340 is located on the side of the fourth radial oil passage 330 away from the second sliding valve core 700. The cavity on the side of the first sliding valve core 300 away from the first elastic member 800 can be connected to the return oil passage 140 in sequence through the third radial oil passage 320, the second axial oil passage 310, the fifth radial oil passage 340 and the sliding valve cavity 160.

[0039] Specifically, in one embodiment, the oil return channel 140 is located on the side of the first elastic member 800 opposite to the first sliding valve core 300.

[0040] In one embodiment, such as Figures 1-3 As shown, the valve body 100 is provided with a second connecting oil passage 180, and the filling channel 120 can be connected to the cavity on the side of the second sliding valve core 700 opposite to the first sliding valve core 300 through the second connecting oil passage 180.

[0041] In one embodiment, such as Figures 1-3 As shown, the priority valve core 200 is also provided with a sixth radial oil passage 240 that connects to the first axial oil passage 210. The sixth radial oil passage 240 is located on the side of the first radial oil passage 220 near the priority valve elastic member 500. The flow area of ​​the sixth radial oil passage 240 is smaller than the flow area of ​​the first radial oil passage 220. When the pressure oil pushes the priority valve core 200 to compress the priority valve elastic member 500 to the second preset position, the first axial oil passage 210 can sequentially pass through the sixth radial oil passage 240, the cavity on the side of the priority valve core 200 near the priority valve elastic member 500, the cavity on the side of the first sliding valve core 300 away from the first elastic member 800, the third radial oil passage 320, the second axial oil passage 310, the fifth radial oil passage 340 and the slide valve cavity 160 to connect to the return oil passage 140.

[0042] In this way, by relieving part of the hydraulic pressure on the side of the priority valve core 200 away from the priority valve elastic element 500 through the sixth radial oil passage 240, the hydraulic pressure on the side of the priority valve core 200 away from the priority valve elastic element 500 will not continuously increase, thus keeping the priority valve core 200 in a dynamic equilibrium state. Furthermore, this configuration ensures that even if the hydraulic pressure in the working channel 130 is greater than the hydraulic pressure in the filling channel 120, the excess hydraulic pressure will be relieved through the sixth radial oil passage 240, preventing an increase in accumulator pressure and avoiding mutual interference between the accumulator and the working valve plate. Further, it prevents the priority valve core 200 from continuing to compress the priority valve elastic element 500, preventing the priority valve core 200 from completely closing the first radial oil passage 220 and preventing the priority valve core 200 from being unable to move in the direction away from the priority valve elastic element 500.

[0043] This application also provides a vehicle that includes the integrated liquid filling system described in any of the above embodiments.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An integrated liquid filling system, characterized in that, The valve includes a valve body (100), a priority valve core (200), a priority valve elastic element (500), a movable plug (600), a first sliding valve core (300), a second sliding valve core (700), a first elastic element (800), and a second elastic element (900). The valve body (100) is provided with an inlet channel (110), a filling channel (120), a working channel (130), a return oil channel (140), a priority valve chamber (150), and a sliding valve chamber (160). The elastic element (500) of the superior valve is located at one end of the superior valve cavity (150), and the movable plug (600) is located at the other end of the superior valve cavity (150). One end of the priority valve core (200) is connected to the elastic element (500), and the other end is movably engaged with the movable plug (600) along the axial direction of the superior valve cavity (150). The first elastic element (800) is disposed at one end of the slide valve cavity (160), and the second elastic element (900) is disposed at the other end of the slide valve cavity (160). The first elastic element (800) is connected to the second elastic element (900) in sequence through the first sliding valve core (300) and the second sliding valve core (700). When the integrated filling system is in the filling state, the inlet channel (110) connects to the cavity on the side of the movable plug (600) near the priority valve core (200), so that the pressure oil can push open the movable plug (600) and connect the inlet channel (110) to the filling channel (120). The inlet channel (110) connects to the cavity on the side of the first sliding valve core (300) away from the first elastic member (800), so that the pressure oil can push the first sliding valve core (300) to compress the first elastic member (800). The filling channel (120) connects the cavity on the side of the second sliding valve core (700) away from the first sliding valve core (300). When the first sliding valve core (300) moves to the point of separating the inlet channel (110) and the cavity on the side of the first sliding valve core (300) away from the first elastic member (800), the pressurized oil can push the second sliding valve core (700) to drive the first sliding valve core (300) to continue to compress the first elastic member (800). The cavity on the side of the priority valve core (200) near the priority valve elastic element (500) is connected to the cavity on the side of the first sliding valve core (300) away from the first elastic element (800). When the first sliding valve core (300) moves to the first preset position, the cavity on the side of the priority valve core (200) near the priority valve elastic element (500) is connected to the return oil passage (140) through the cavity on the side of the first sliding valve core (300) away from the first elastic element (800), so that the pressurized oil can push the priority valve core (200) to compress the priority valve elastic element (500), and the inlet passage (110) can be connected to the working passage (130). The priority valve core (200) is provided with a first axial oil passage (210) and a first radial oil passage (220) that are interconnected. The liquid inlet channel (110) can sequentially connect the cavity on the side of the movable plug (600) near the priority valve core (200) through the first radial oil passage (220) and the first axial oil passage (210). The priority valve core (200) is also provided with a sixth radial oil passage (240) that connects to the first axial oil passage (210). The flow area of ​​the sixth radial oil passage (240) is smaller than that of the first radial oil passage (220). When the pressure oil pushes the priority valve core (200) to compress the priority valve elastic element (500) to the second preset position, the first axial oil passage (210) can sequentially connect to the return oil passage (140) through the sixth radial oil passage (240), the cavity on the side of the priority valve core (200) close to the priority valve elastic element (500), and the cavity on the side of the first sliding valve core (300) away from the first elastic element (800).

2. The integrated liquid filling system according to claim 1, characterized in that, The priority valve core (200) is also provided with a second radial oil passage (230) that connects to the first axial oil passage (210), and the valve body (100) is provided with a first connecting oil passage (170). The first axial oil passage (210) can connect to the cavity on the side of the first sliding valve core (300) away from the first elastic member (800) in sequence through the second radial oil passage (230) and the first connecting oil passage (170).

3. The integrated liquid filling system according to claim 2, characterized in that, A valve sleeve (400) is provided on the outside of the first sliding valve core (300). The valve sleeve (400) is fixed in the sliding valve cavity (160). The valve sleeve (400) is provided with a through hole (410) connecting the first connecting oil passage (170) and the first sliding valve core (300). The first sliding valve core (300) is provided with a second axial oil passage (310) and a third radial oil passage (320) and a fourth radial oil passage (330) respectively connecting the second axial oil passage (310). The first connecting oil passage (170) can sequentially pass through the sliding valve cavity (160), the through hole (410), the fourth radial oil passage (330), the second axial oil passage (310) and the third radial oil passage (320) to connect the cavity on the side of the first sliding valve core (300) away from the first elastic member (800).

4. The integrated liquid filling system according to claim 3, characterized in that, The first sliding valve core (300) is also provided with a fifth radial oil passage (340) that connects to the second axial oil passage (310). The cavity on the side of the first sliding valve core (300) away from the first elastic member (800) can be connected to the return oil passage (140) in sequence through the third radial oil passage (320), the second axial oil passage (310), the fifth radial oil passage (340) and the sliding valve cavity (160).

5. The integrated liquid filling system according to claim 1, characterized in that, The valve body (100) is provided with a second connecting oil passage (180), and the filling channel (120) can connect the second sliding valve core (700) to the cavity on the side away from the first sliding valve core (300) through the second connecting oil passage (180).

6. The integrated liquid filling system according to claim 1, characterized in that, The oil return channel (140) is located on the side of the first elastic element (800) away from the first sliding valve core (300).

7. The integrated liquid filling system according to claim 1, characterized in that, The valve elastic element (500), the first elastic element (800), and the second elastic element (900) are all compression springs.

8. A vehicle, characterized in that, Includes the integrated liquid filling system as described in any one of claims 1-7.

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