Intelligent oil filling device

Abstract

This utility model discloses an intelligent oil filling device, relating to the field of oil filling, aiming to solve the problems of existing technologies being unable to be used in cold environments and having inconvenient oil filling needle replacement. The technical solution involves installing a heating module and heating plate inside the tank to heat the oil, thus maintaining optimal oil flow even in cold environments. A detachable oil filling needle is connected to the oil filling pipe, allowing for selection of appropriate needles to accommodate more filling holes. The oil filling needle and connecting end are connected by a thread, resulting in a more stable connection and better sealing. The plug-in connection between the oil filling needle and connecting end facilitates manual operation, enabling quick installation and removal of the oil filling needle. The use of a sealing ring seals the end face, preventing oil leakage.

Description

Technical Field

[0001] This utility model relates to the field of oil filling technology, specifically to an intelligent oil filling device. Background Technology

[0002] When filling oil, an oil tank and an oil nozzle are required. A booster pump inside the tank pumps the oil out, and the intelligent oil nozzle controls the amount of oil dispensed, automatically stopping delivery when the set amount is reached. However, in cold regions, the oil's viscosity may increase or even solidify due to the low temperature, making dispensing impossible. Furthermore, the needles attached to existing oil nozzles are not replaceable, making it inconvenient to handle different diameter filling nozzles. Using smaller needles results in low flow rates and inefficient dispensing. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an intelligent oil filling device that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model discloses an intelligent oil filling device. The technical solution includes an intelligent oil gun and a tank. The intelligent oil gun contains an oil gun chip, a flow meter, and a battery. The intelligent oil gun has an oil gun display screen and an oil gun operation panel. The oil gun chip is electrically connected to the flow meter, the oil gun display screen, the oil gun operation panel, and the battery. The intelligent oil gun is connected to an oil-electric composite sheath and an oil filling pipe. A booster pump is located inside the tank. The oil-electric composite sheath is inserted into the tank and connected to the booster pump. The oil-electric composite sheath includes an oil delivery pipe and a cable. The two ends of the oil delivery pipe are connected to the inlet of the intelligent oil gun and the outlet of the booster pump, respectively. The cable electrically connects the booster pump to the oil gun chip. It also includes a heating base with a control device, a power interface, a display, a switch, and a power socket. The control device is electrically connected to the power interface, display, switch, and power socket. Inside the tank, there is a battery pack, a temperature sensor, and a heating module. The bottom of the tank has a heating plate, an anti-dry-burning device, and a coupler. The coupler corresponds to the position and size of the power socket. The heating module is electrically connected to the temperature sensor, coupler, heating plate, and anti-dry-burning device. The tank has a sealing cap. The battery pack is electrically connected to the booster pump. There is a relay in the connection circuit, and the relay is electrically connected to the oil gun chip. The free end of the oil filling pipe is detachably connected to an oil filling needle. By setting up a heating plate, the oil in the tank can be heated, thus enabling normal oil supply in low-temperature environments. The detachable oil filling needle allows for replacement as needed, improving compatibility.

[0005] As a preferred embodiment of this invention, the tank body has a liquid level display window and a shoulder strap ring; a protective spring is fitted onto the oil filling pipe. The liquid level display window allows for timely monitoring of the liquid level in the tank, the shoulder strap ring is used to connect a shoulder strap for easy carrying, and the protective spring protects the end of the oil filling pipe from damage caused by excessive bending.

[0006] In a preferred embodiment of this invention, a locking mechanism connects the tank body and the sealing cap. This allows the sealing cap to be connected and pressed tightly for a seal.

[0007] In a preferred embodiment of this invention, the free end of the oil injection pipe is connected to a connecting end, which includes a nut. The end of the nut away from the oil injection pipe has an externally threaded tube, and the end of the oil injection needle has an internally threaded tube. The internally threaded tube of the oil injection needle and the externally threaded tube of the connecting end are connected via an internal and external threaded connector. The threaded connection provides good sealing and stable connection.

[0008] In a preferred embodiment of this invention, the free end of the oil injection tube is connected to a connecting end with a spring clip. The connecting end slidably contacts a connector, and the oil injection needle rests on the connector. The connector has a slot that corresponds to the position and size of the spring clip, and the spring clip is engaged in the slot. A quick-release device is slidably connected to the connector, and the quick-release device has a pressing block that corresponds to the position and size of the spring clip. The connection between the spring clip and the slot, along with the cooperation of the quick-release device, allows for direct insertion and removal, enabling rapid replacement of the oil injection needle by hand without the aid of external tools.

[0009] As a preferred technical solution of this utility model, the connecting end includes a nut, one end of which is connected to an oil injection pipe, and the other end is sequentially connected to a clamping section, a snap-fit ​​section, and a guide section. The connecting end has an oil passage that runs through both ends. The outer wall of the snap-fit ​​section has a side groove, and a spring buckle is set in the side groove. The spring buckle has two buckles that are staggered vertically. The upper buckle is used to snap into the slot, and the lower buckle is used to drive the spring buckle to move so as to unlock it. The guide section has a frustum structure, and there is a sealing groove on its outer conical surface.

[0010] In a preferred embodiment of this invention, the connector includes a connecting section and an outer sleeve. The connecting section is a tubular structure, coaxially arranged with the outer sleeve and connected at its upper end. A drainage section is connected to the lower end of the connecting section. The drainage section is a frustum-shaped shell structure, with its larger diameter end connected to the connecting section and its smaller diameter end connected to an oil injection needle. A groove is bent and formed on the connecting section and the drainage section. A sealing platform is provided on the inner wall of the drainage section. The sealing platform and the sealing groove are corresponding in position and matched in size, and a sealing ring is press-fitted between them. A buffer ring is press-fitted between the top surface of the connector and the bottom surface of the clamping section. The buffer ring provides buffer space for the docking operation, and the sealing ring seals the mating surfaces to prevent oil leakage.

[0011] As a preferred embodiment of this utility model, the quick-release device includes a sliding section, which is a tubular structure with its outer wall in sliding contact with the inner wall of the outer sleeve. A pressing block is disposed on the inner wall of the sliding section. A limiting section is connected to the lower end of the sliding section, the outer diameter of which is larger than that of the sliding section. A handheld section is connected to the lower end of the limiting section, which is a frustum-shaped shell structure. The large-diameter end is connected to the lower end of the limiting section, and the small-diameter end is connected to a protective tube, through which an oil injection needle passes. A limiting mechanism exists between the quick-release device and the connector. By pressing the lower buckle of the spring clip with the pressing block, the spring clip is deformed, thereby releasing the upper buckle from its fastening state.

[0012] As a preferred embodiment of this invention, the limiting mechanism includes a guide block disposed on the outer wall of the sliding section. The inner wall of the connector's outer sleeve has a first sliding groove extending along an arc surface and a second sliding groove extending longitudinally. The first and second sliding grooves are connected, and the guide block slides in contact with the first and second sliding grooves. The guide block slides along the first and second sliding grooves, preventing accidental slippage of the quick-release device during use and providing guidance for its movement.

[0013] As a preferred embodiment of this invention, the limiting mechanism includes a limiting buckle plate hinged to the outer wall of the connector's outer sleeve. The limiting buckle plate has a buckle groove, and the outer wall of the quick-release device is provided with a first limiting block that corresponds to the buckle groove in position and size. The first limiting block slides in contact with the buckle groove. By fastening the limiting buckle plate onto the first limiting block, the movement of the quick-release device can be effectively prevented.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by setting a heating module and heating plate in the tank, this utility model can heat the oil in the tank, so that the oil can still maintain the optimal flow state in a cold environment; the oil injection pipe can be detachably connected to the oil injection needle, and the appropriate needle can be selected as needed, so as to be compatible with more oil injection holes.

[0015] Furthermore, the oil injection needle and the connecting end are connected by a thread, which makes the connection more stable and provides a better seal; the plug-in connection between the oil injection needle and the connecting end makes it easier to operate by hand, enabling quick installation and removal of the oil injection needle; and the use of a sealing ring can seal the end face and prevent oil leakage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the second embodiment of the present invention;

[0020] Figure 5 This is an enlarged structural diagram of section A in the second embodiment of this utility model;

[0021] Figure 6 This is a schematic diagram of the connection end structure according to the second embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the internal structure of the connecting end in the second embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram of the connector structure according to the second embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the internal structure of the connector according to the second embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the quick-release device structure according to the second embodiment of this utility model;

[0026] Figure 11 This is a schematic diagram of the internal structure of the quick-release device according to the second embodiment of this utility model;

[0027] Figure 12 This is a schematic diagram of the third embodiment of the present invention;

[0028] Figure 13 This is an enlarged structural diagram of section B in the third embodiment of this utility model;

[0029] Figure 14 This is a schematic diagram of the quick-release device structure according to the fourth embodiment of this utility model;

[0030] Figure 15 This is a schematic diagram of the internal structure of the quick-release device according to the fourth embodiment of this utility model.

[0031] In the diagram: 1. Heating base; 2. Tank body; 3. Sealing cap; 4. Oil-electric composite sheath; 5. Intelligent oil gun; 6. Oil injection pipe; 7. Connecting end; 701. Nut; 702. Clamping section; 703. Snap-fit ​​section; 704. Guide section; 705. Side groove; 706. Sealing groove; 707. Orienting block; 8. Oil injection needle; 9. Protective spring; 10. Connector; 1001. Connecting section; 1002. Outer sleeve; 1003. Drainage Section; 1004, Sealing platform; 1005, Card slot; 1006, Orientation groove; 1007, First slide groove; 1008, Second slide groove; 1009, Second limiting block; 11, Quick release device; 1101, Sliding section; 1102, Handheld section; 1103, Protective tube; 1104, Compression block; 1105, Guide block; 1106, First limiting block; 12, Buffer ring; 13, Spring buckle; 14, Sealing ring; 15, Limiting buckle plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0033] like Figures 1 to 2The first embodiment of this utility model is disclosed, and the technical solution adopted includes a heating base 1 and a tank 2. The heating base 1 includes a square outer shell, on which are mounted a 220V power interface, a charging display screen, a heating display screen, a charging switch, a heating switch, and independent indicator lights for charging and heating. The charging display screen and the heating display screen have operation buttons. The top surface of the outer shell has a power socket. Inside the outer shell is a control device, which includes an 89C51 microcontroller. After the 89C51 microcontroller is connected to the peripheral circuit, it is electrically connected to the 220V power interface, the charging display screen, the heating display screen, the charging switch, the heating switch, the charging indicator light, the heating indicator light, and the power socket. The top of the tank 2 is open, and a latch and a sealing cap 3 are installed at the opening of the tank 2. The sealing cap 3 slides in contact with the opening of the tank. The sealing cap 3 has a hook position that corresponds to the position and size of the latch. The tank 2 is provided with a liquid level observation window for observing the liquid level inside the tank 2. For easy carrying, a shoulder strap loop is provided on the tank 2 for attaching a shoulder strap. To heat the oil inside the tank 2, a coupler is installed on the outer bottom surface of the tank 2, and a compartment is installed on the inner bottom. The compartment contains a battery pack, a heating module, a heating plate, and an anti-dry-burning device. To obtain the oil temperature, a temperature sensor is installed on the tank 2. The heating module is electrically connected to the heating plate, the anti-dry-burning device, the temperature sensor, and the coupler. The coupler is positioned and matched to the power socket of the heating base 1. The power socket has a live wire clip, a neutral wire clip, a ground wire clip, and a signal wire clip. The coupler has a live wire copper ring, a neutral wire copper ring, a ground wire copper ring, and a signal wire copper ring. When the coupler of the tank 2 is placed on the power socket, the live wire copper ring, the neutral wire copper ring, the ground wire copper ring, and the signal wire copper ring are connected to the live wire clip, the neutral wire clip, the ground wire clip, and the signal wire clip, respectively, connecting the circuit and establishing data transmission. The heating principle of the heating base 1 and the tank 2 is similar to that of an electric kettle. Those skilled in the art can obtain technical inspiration from an electric kettle. To achieve precise quantitative oil supply, an intelligent oil gun 5 is used. The intelligent oil gun 5 contains an oil gun chip, a gear flow meter, and a battery. The intelligent oil gun 5 has an oil gun display screen and an oil gun operation panel. The oil gun chip is electrically connected to the gear flow meter, oil gun display screen, oil gun operation panel, and battery. The intelligent oil gun 5 is connected to an oil-electric composite sheath 4. The tank 2 contains a booster pump and a battery pack. The booster pump is used to transport oil, and the battery pack is electrically connected to the booster pump to supply power. There is a relay on the connection line between the battery pack and the booster pump. The oil-electric composite sheath 4 is inserted into the tank 2. The oil-electric composite sheath 4 includes an oil delivery pipe and a cable. The two ends of the oil delivery pipe are connected to the oil inlet of the intelligent oil gun 5 and the outlet of the booster pump, respectively. The cable is electrically connected to the relay. The oil outlet of the intelligent oil gun 5 is connected to an oil injection pipe 6. The free end of the oil injection pipe 6 is connected to a connecting end 7. The main body of the connecting end 7 is a nut 701. In order to prevent the oil injection pipe 6 from being broken due to excessive bending at the end, a protective spring 9 is fitted on the oil injection pipe 6.The nut 701 of the connecting end 7 is connected to the internal and external threaded connector and then to the oil injection needle 8. The oil injection needle 8 has a connecting nut, which engages with the internal and external threaded connector.

[0034] The working principle of this embodiment:

[0035] Select an appropriate size oil injection needle 8 and a matching internal and external threaded connector according to the size of the oil injection hole. Use a wrench to connect the internal and external threaded connector to the nut 701 of the connecting end 7, and then connect the oil injection needle 8 to the internal and external threaded connector.

[0036] Connect the coupler of tank 2 to the power socket of heating base 1, connect the power connector of heating base 1 to 220V AC power through the power cord, turn on the charging switch to charge the battery pack of tank 2, and turn off the charging switch after charging is complete. If it is necessary to heat the oil, turn on the heating switch and set the heating temperature. The control device will drive the heating module to drive the heating plate to heat the oil. During the heating process, the oil temperature is monitored in real time by the temperature sensor. After the set temperature is reached, the heating stops.

[0037] Move tank 2 to the refueling point, insert the injection needle 8 into the injection hole, operate the intelligent oil gun 5 to set the injection volume, start the intelligent oil gun 5 to start injecting oil, the intelligent oil gun 5 supplies power to the relay, the relay conducts the power supply circuit of the booster pump, starts the booster pump, the booster pump pumps out oil, after the set oil volume is reached, the relay is de-energized, the booster pump stops, and the oil injection stops. Example 2

[0038] like Figures 3 to 11 As shown, the difference between this embodiment and embodiment 1 is that the end of the nut 701 of the connecting end 7 away from the oil injection pipe 6 is coaxially connected with a clamping section 702, a snap-fit ​​section 703 and a guide section 704 in sequence. The connecting end 7 has an oil passage that runs through both ends. The outer wall of the snap-fit ​​section 703 has a side groove 705. A spring buckle 13 is provided in the side groove 705. The spring buckle 13 has two buckles arranged vertically, with the lower buckle being larger than the upper buckle. There are six sets of side grooves 705 and spring buckles 13, which are distributed in a ring array on the outer wall of the snap-fit ​​section 703. The guide section 704 has a frustum structure, and its outer conical surface has a right-angled sealing groove 706.

[0039] Connector 10 is fitted onto connector 7, such as Figure 8 , Figure 9As shown, connector 10 includes a connecting section 1001 and an outer sleeve 1002. The outer sleeve 1002 is fitted over the connecting section 1001, and their top surfaces are connected to form the top surface of connector 10. The lower end of the connecting section 1001 is connected to a drainage section 1003. The drainage section 1003 has a frustum-shaped shell structure, with its larger diameter end connected to the connecting section 1001 and its smaller diameter end connected to an oil injection needle 8. Connector 10 and oil injection needle 8 are integrally formed. Six sets of through slots 1005 are provided on the side walls of the connecting section 1001 and the drainage section 1003. The six sets of slots 1005 are arranged in a circular array on connector 10, corresponding one-to-one with six sets of spring clips 13. The upper part of the slots 1005... A vertical opening is formed along the side wall of the connecting section 1001, and the lower part is opened along the conical outer wall of the drainage section 1003, forming a bent hole-like structure. The upper buckle of the spring clip 13 engages with the upper edge of the slot 1005 to form a limit. A sealing platform 1004 is provided on the inner wall of the drainage section 1003. The sealing platform 1004 is a right-angled boss, which corresponds to the sealing groove 706 in position and size. A sealing ring 14 is press-fitted between the horizontal groove wall of the sealing groove 706 and the horizontal platform surface of the sealing platform 1004. A rubber buffer ring 12 is press-fitted between the top surface of the connector 10 and the bottom surface of the pressing section 702. Through the buffer of the buffer ring 12, the spring clip 13 can be tightly engaged with the slot. After the connector 10 is put on the connecting end 7, the lower end of the connecting end 7 is lower than the sealing platform 1004, so that the oil flowing out from the connecting end 7 flows downward through the oil injection needle 8, and does not overflow upward due to the sealing of the sealing ring 14. To facilitate the fitting of the connector 10 onto the connector end 7, the spring clip 13 is aligned with the slot 1005. A guide block 707 is provided on the outer wall of the snap-fit ​​section 703 of the connector end 7, and a longitudinal guide groove 1006 is formed on the inner wall of the connector section 1001 of the connector 10. The guide groove 1006 and the guide block 707 are positioned and matched in size. When fitting the connector 10 onto the snap-fit ​​section 703 of the connector end 7, the guide groove 1006 must be aligned with the guide block 707 before it can be fitted. At this time, the spring clip 13 is aligned with the slot 1005.

[0040] To facilitate the disassembly of connector 10, a quick-release device 11 is also connected to connector 10. Quick-release device 11 includes a sliding section 1101, which is a tubular structure. Its outer wall slides in contact with the inner wall of the outer sleeve 1002. Six sets of compression blocks 1104 are arranged in a ring array on the inner wall of sliding section 1101. The compression blocks 1104 correspond in position and size to the slots 1005 of connector 10. A limiting section is connected to the lower end of sliding section 1101. The outer diameter of the limiting section is larger than the outer diameter of sliding section 1101. A handle section 1102 is connected to the lower end of the limiting section. The handheld section 1102 has a frustum-shaped shell structure. The large-diameter end is connected to the lower end of the limiting section, and the small-diameter end is connected to the protective tube 1103. The oil injection needle 8 passes through the protective tube 1103. The outer wall of the sliding section 1101 is provided with a guide block 1105. The inner wall of the outer sleeve 1002 of the connector 10 is provided with a first sliding groove 1007 extending along the arc surface and a second sliding groove 1008 extending longitudinally. The first sliding groove 1007 and the second sliding groove 1008 are connected to form an L-shaped slide. The guide block 1105 slides in contact with the first sliding groove 1007 and the second sliding groove 1008.

[0041] The difference between the working principle of this embodiment and that of embodiment 1 is that, when installing the oil injection needle 8, a sealing ring 14 is placed on the sealing platform 1004 of the connector 10, and a buffer ring 12 is placed on the upper end face of the connector 10. After aligning the directional groove 1006 with the directional block 707 of the connecting end 7, they are coaxially fitted together. The connecting section 1001 is fitted onto the snap-fit ​​section 703. When the pressing section 702 of the connecting end 7 is in contact with the buffer ring 12, the sealing groove 706 is also in contact with the sealing ring 14. The buffer ring 12 and the sealing ring 14 are squeezed together. After the buffer ring 12 is deformed, the upper buckle of the spring buckle 13 is engaged with the upper edge of the slot 1005 to form a limit.

[0042] When the oil injection needle 8 needs to be replaced, hold the hand section 1102 of the quick release tool 11 and turn the quick release tool 11 to make the guide block 1105 slide along the first slide groove 1007 to the port of the second slide groove 1008. At this time, the pressing block 1104 corresponds to the position of the spring buckle 13. Slide the quick release tool 11 towards the connecting end 7. The pressing block 1104 enters the slot 1005 from the lower bend of the slot 1005 and contacts the outer wall of the connecting section 1001. Continue to slide. The pressing block 1104 presses the lower buckle of the spring buckle 13. Since the lower buckle is larger than the upper buckle, when the spring buckle 13 is deformed to the maximum extent by pressing the lower buckle, the upper buckle disengages from the slot 1005, the limit is released, the buffer ring 12 is restored, the slot 1005 and the upper buckle are misaligned, and the connector 10 can be removed by hand. Example 3

[0043] like Figure 12 , Figure 13As shown, the difference between this embodiment and embodiment 2 is that a limiting plate 15 is hinged to the outer wall of the outer sleeve 1002 of the connector 10. A buckle groove is provided on the limiting plate 15. A first limiting block 1106 is provided on the outer wall of the quick release device 11, which corresponds to the buckle groove and matches its size. The lower edge of the first limiting block 1106 has rounded corners. The first limiting block 1106 slides in contact with the buckle groove. By fastening the limiting plate 15 to the first limiting block 1106, the quick release device 11 can be prevented from moving relative to the connector 10, making it more stable to use. In order to prevent the swing of the limiting plate 15 from interfering with the operation of the quick release device 11 when using it, a second limiting block 1009 is also provided on the outer sleeve 1002. The second limiting block 1009 is located above the limiting plate 15. By flipping the limiting plate 15 around the hinge, the buckle groove can be fastened to the second limiting block 1009, thereby fixing the limiting plate 15. Example 4

[0044] like Figure 14 , Figure 15 As shown, the difference between this embodiment and embodiment 2 is that the connecting end 7 has an upper chuck, and the connecting section 1001 of the connector 10 has a lower chuck. The upper and lower chucks are positioned correspondingly, and a gasket is installed between the upper and lower chucks. The upper and lower chucks can be fastened together by using a buckle to complete the quick connection, and the connecting end 7 and the connector 10 can press the sealing ring 14 tightly.

[0045] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0046] The smart oil gun used in this article is a commercially available product and belongs to existing technology.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent oil filling device, comprising an intelligent oil gun (5) and a tank (2), wherein the intelligent oil gun (5) contains an oil gun chip, a flow meter and a battery, the intelligent oil gun (5) has an oil gun display screen and an oil gun operation panel, the oil gun chip is electrically connected to the flow meter, the oil gun display screen, the oil gun operation panel and the battery, the intelligent oil gun (5) is connected to an oil-electric composite sheath (4) and an oil filling pipe (6), the tank (2) contains a booster pump, the oil-electric composite sheath (4) is inserted into the tank (2) and connected to the booster pump, the oil-electric composite sheath (4) includes an oil delivery pipe and a cable, the two ends of the oil delivery pipe are respectively connected to the inlet of the intelligent oil gun (5) and the outlet of the booster pump, and the cable electrically connects the booster pump and the oil gun chip, characterized in that: It also includes a heating base (1), which contains a control device. The heating base (1) has a power interface, a display, a switch and a power socket. The control device is electrically connected to the power interface, the display, the switch and the power socket. The tank (2) also contains a battery pack, a temperature sensor and a heating module. The bottom of the tank (2) has a heating plate, an anti-dry burning device and a coupler. The coupler is in the same position and size as the power socket. The heating module is electrically connected to the temperature sensor, the coupler, the heating plate and the anti-dry burning device. The tank (2) has a sealing cover (3). The battery pack is electrically connected to the booster pump. There is a relay on the connection line. The relay is electrically connected to the cable of the oil-electric composite sheath (4). The free end of the oil injection pipe (6) is detachably connected to an oil injection needle (8).

2. The intelligent oil filling device according to claim 1, characterized in that: The tank (2) has a liquid level display window and a back strap ring; the oil injection pipe (6) is fitted with a protective spring (9).

3. The intelligent oil filling device according to claim 1, characterized in that: The tank body (2) is connected to the sealing cap (3) by a latch.

4. The intelligent oil filling device according to any one of claims 1-3, characterized in that: The free end of the oil injection pipe (6) is connected to a connecting end (7), which includes a nut (701). The end of the nut (701) away from the oil injection pipe (6) has an external thread tube, and the end of the oil injection needle (8) has an internal thread tube. The internal thread tube of the oil injection needle (8) is connected to the external thread tube of the connecting end (7) through an internal and external thread connector.

5. The intelligent oil filling device according to any one of claims 1-3, characterized in that: The free end of the oil injection pipe (6) is connected to a connecting end (7), the connecting end (7) has a spring clip (13), and the connecting end (7) slides in contact with a connector (10). The oil injection needle (8) is on the connector (10), and the connector (10) has a slot (1005) that corresponds to the position and size of the spring clip (13). The spring clip (13) is fastened in the slot (1005). A quick release device (11) is slidably connected to the connector (10), and the quick release device (11) has a pressing block (1104). The pressing block (1104) corresponds to the position and size of the spring clip (13).

6. The intelligent oil filling device according to claim 5, characterized in that: The connecting end (7) includes a nut (701), one end of which is connected to an oil injection pipe (6), and the other end is connected in sequence to a clamping section (702), a snap-fit ​​section (703), and a guide section (704). The connecting end (7) has an oil passage that runs through both ends. The outer wall of the snap-fit ​​section (703) is provided with a side groove (705), and a spring buckle (13) is provided in the side groove (705). The spring buckle (13) is provided with two buckles that are staggered vertically. The guide section (704) is a frustum structure with a sealing groove (706) on its outer conical surface.

7. The intelligent oil filling device according to claim 6, characterized in that: The connector (10) includes a connecting section (1001) and an outer tube (1002). The connecting section (1001) is a tubular structure, which is coaxially arranged with the outer tube (1002) and connected to the upper end. The lower end of the connecting section (1001) is connected to a drainage section (1003). The drainage section (1003) is a frustum shell structure. Its large diameter end is connected to the connecting section (1001), and its small diameter end is connected to the oil injection needle (8). The slot (1005) is bent and opened on the connecting section (1001) and the drainage section (1003). A sealing platform (1004) is provided on the inner wall of the drainage section (1003). The sealing platform (1004) and the sealing groove (706) are corresponding in position and matched in size, and a sealing ring (14) is pressed between them. A buffer ring (12) is pressed between the top surface of the connector (10) and the bottom surface of the pressing section (702).

8. The intelligent oil filling device according to claim 7, characterized in that: The quick release device (11) includes a sliding section (1101), which is a tubular structure. Its outer wall is in sliding contact with the inner wall of the outer sleeve (1002). The squeezing block (1104) is set on the inner wall of the sliding section (1101). The lower end of the sliding section (1101) is connected to a limiting section. The outer diameter of the limiting section is larger than the outer diameter of the sliding section (1101). The lower end of the limiting section is connected to a handheld section (1102). The handheld section (1102) is a frustum-shaped shell structure. The large diameter end is connected to the lower end of the limiting section, and the small diameter end is connected to a protective tube (1103). The oil injection needle (8) passes through the protective tube (1103). There is a limiting mechanism between the quick release device (11) and the connector (10).

9. The intelligent oil filling device according to claim 8, characterized in that: The limiting mechanism includes a guide block (1105) disposed on the outer wall of the sliding section (1101). The inner wall of the outer sleeve (1002) of the connector (10) is provided with a first sliding groove (1007) extending along the arc surface and a second sliding groove (1008) extending longitudinally. The first sliding groove (1007) and the second sliding groove (1008) are connected. The guide block (1105) slides in contact with the first sliding groove (1007) and the second sliding groove (1008).

10. The intelligent oil filling device according to claim 8, characterized in that: The limiting mechanism includes a limiting buckle plate (15), which is hinged to the outer wall of the outer sleeve (1002) of the connector (10). A buckle groove is provided on the limiting buckle plate (15), and a first limiting block (1106) is provided on the outer wall of the quick release device (11) that corresponds to the buckle groove and matches its size. The first limiting block (1106) slides in contact with the buckle groove.

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