Oil tank assembly and charging pile

Abstract

The embodiment of the utility model provides an oil tank assembly and a charging pile, and the oil tank assembly comprises a tank body which is provided with an oil outlet and an assembly port; the cover plate is detachably connected with the assembly opening; the support assembly is arranged in the box body, the support assembly is detachably connected with the cover plate, and a filtering cavity is formed in the support assembly; the filtering structure is arranged in the filtering cavity, and the filtering structure is communicated with the oil outlet; cooling oil in the box body is discharged outwards through the oil outlet after passing through the support assembly and the filtering structure. The technical scheme provided by the utility model is suitable for scenes with limited space and higher requirements on integration, such as a cooling system of an over-filling pile, oil does not need to be emptied during maintenance, the treatment on the filtering structure is simpler, the operation is simple and convenient, and the time and the cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and more specifically, to a fuel tank assembly and a charging pile. Background Art

[0002] Currently, during the use of high-power charging piles, the heat generated is relatively large, and an oil cooling scheme is usually adopted for cooling. However, in related technologies, most often a positive displacement pump such as a gear pump is used, which occupies a large space. Summary of the Utility Model

[0003] The utility model aims to at least solve the technical problem in the prior art or related technologies that the use of a positive displacement pump for cooling leads to a large space occupation.

[0004] In view of this, an embodiment of the first aspect of the utility model provides a fuel tank assembly.

[0005] An embodiment of the second aspect of the utility model provides a charging pile.

[0006] To achieve the above object, an embodiment of the utility model provides a fuel tank assembly, including: a box body, which is provided with an oil outlet and an assembly port; a cover plate, which is detachably connected to the assembly port; a support assembly, which is arranged inside the box body and is detachably connected to the cover plate, and a filtering cavity is formed inside the support assembly; a filtering structure, which is arranged in the filtering cavity and is communicated with the oil outlet; wherein, the cooling oil inside the box body is discharged outwards through the support assembly and the filtering structure and then through the oil outlet.

[0007] According to the fuel tank assembly proposed by the utility model, including a box body, a cover plate, a support assembly and a filtering structure, by integrating a filtering structure inside the fuel tank and connecting the support assembly with the filtering structure to the cover plate, on the one hand, it is convenient to make the cooling oil pass through efficient filtration before entering the oil pump, extend the service life of the equipment, and reduce equipment failures caused by unclean oil. On the other hand, since the support assembly is connected to the cover plate, when replacing and cleaning the filtering structure, the cover plate can be directly removed, and the support assembly and the internal filtering structure will be taken out together, making the operation more convenient. Generally speaking, the fuel tank assembly of this solution is suitable for scenarios with limited space and high integration requirements, such as the cooling system of a supercharging pile. During maintenance, there is no need to drain the oil, and the treatment of the filtering structure is simpler, the operation is simple, and time and cost are saved.

[0008] Specifically, the box body is the main structure of the whole assembly, storing cooling oil inside. The box body is provided with an oil outlet and an assembly port. The oil outlet is connected to an external oil pump, and the assembly port is connected to the cover plate. Generally, the assembly port is located at the top or side of the box body, and the oil outlet is located at the bottom or side of the box body.

[0009] The cover plate is used to seal the assembly opening of the box body. Among them, the cover plate is detachably connected to the assembly opening and fixedly connected to the bracket assembly. The cover plate is installed at the assembly opening position of the box body and fixed by screws or buckles. Thus, on the one hand, it is used to seal the box body to prevent oil leakage, and on the other hand, it is also used to support the installation and disassembly of the bracket assembly.

[0010] The bracket assembly is installed inside the box body, and a filter cavity is formed inside. The bracket assembly is mainly used to support the filter structure and form the filter cavity. The bracket assembly is located inside the box body, fixed under the cover plate, and is in the oil, ensuring that the cooling oil passes through the filter before entering the oil outlet. It should be added that the bracket assembly is detachably connected to the cover plate, so that after removing the cover plate, the internal filter structure can be taken out by disassembly for cleaning or replacement.

[0011] The filter structure is installed in the filter cavity of the bracket assembly. The filter structure is connected to the bracket assembly and the oil outlet. The filter structure is located inside the bracket assembly, and the oil flow path passes through the filter structure, thereby filtering impurities in the cooling oil and ensuring the cleanliness of the oil entering the oil outlet, improving the system reliability.

[0012] Generally speaking, the cooling oil flows into the box body through the return oil pipe and is stored in the box body. When the oil pump works, the oil passes through the bracket assembly and enters the filter cavity. The oil is filtered by the filter structure in the filter cavity. A sedimentation tank is designed at the bottom of the bracket assembly, and dirt is deposited at the bottom, which can be easily cleaned during maintenance. Finally, the filtered clean oil is discharged from the box body through the oil outlet and enters the oil pump and the cooling system for recycling.

[0013] When it is necessary to clean or replace the filter element, remove the cover plate, take out the bracket assembly and the filter structure for cleaning or replacement, without draining the oil, and the operation is simple.

[0014] In some technical solutions, optionally, the bracket assembly specifically includes: a connecting cover, which is detachably connected to the cover plate; a bracket body, which is detachably connected to the connecting cover, and the bracket body and the connecting cover enclose to form a filter cavity; among them, a plurality of oil inlet holes are provided on the wall surface of the bracket body.

[0015] In this technical solution, the bracket assembly includes a connecting cover and a bracket body. The connecting cover is the upper structure of the bracket assembly, and is usually connected to the cover plate by threads or buckles to achieve detachable connection, ensuring that it can be easily disassembled and installed during maintenance.

[0016] The connecting cover is located above the bracket body and is in direct contact with the cover plate. The connecting cover not only plays a role in fixing the bracket body, but also prevents oil leakage through a sealing design, ensuring the sealing performance of the filter cavity.

[0017] The bracket body is the lower structure of the bracket assembly, usually made of metal or plastic materials. There are multiple oil inlet holes on the wall surface. The bracket body is detachably connected to the connection cover. After the two are connected, a filtering chamber is formed. The bracket body is located inside the box body, and the bottom can be in direct contact with the bottom of the box body or can be in indirect contact with the bottom of the box body, that is, through an additional structural support, and the top is in contact with the connection cover.

[0018] Among them, the bracket body supports the filtering structure and guides the oil fluid into the filtering chamber through the oil inlet holes. Its design ensures that the oil fluid is effectively filtered before entering the oil pump.

[0019] The filtering chamber is the space formed by the enclosure of the bracket body and the connection cover. A filtering structure is installed inside. The oil fluid enters the filtering chamber through the oil inlet holes and flows out after passing through the filtering structure. The filtering chamber provides the necessary space for the filtering structure to ensure that the oil fluid does not leak during the filtering process and at the same time realizes the purification of the oil fluid through the filtering structure.

[0020] The oil inlet holes are multiple small holes on the wall surface of the bracket body, used to guide the oil fluid into the filtering chamber. The oil inlet holes are in direct contact with the oil fluid inside the box body, and the cooling oil can enter the filtering chamber through these holes.

[0021] In one embodiment, the oil inlet holes are usually evenly distributed on the wall surface of the bracket body to ensure that the oil fluid can enter the filtering chamber evenly. The design of the oil holes ensures that the oil fluid can be evenly distributed before entering the filtering chamber, avoiding the reduction of the filtering effect caused by too fast local oil fluid flow rate.

[0022] In some technical solutions, optionally, it further includes: a first mating structure provided on the bracket body, and a partial oil passage is formed inside the first mating structure; among them, the filtering structure is cylindrical, and one end of the filtering structure is provided with a connection port, and the connection port is in mating connection with the first mating structure.

[0023] In this technical solution, the first mating structure is provided on the bracket body and is in mating connection with the connection port of the cylindrical filtering structure to ensure the continuity and tightness of the oil fluid flow. Among them, the first mating structure can be located inside or at the bottom of the bracket body and is aligned with the connection port of the filtering structure. The first mating structure is the channel for the oil fluid to enter the filtering chamber from the box body, ensuring that the oil fluid can smoothly flow into the filtering chamber and pass through the filtering structure.

[0024] The filtering structure is cylindrical, and one end of the filtering structure is provided with a connection port, which is in mating connection with the first mating structure, and the connection port is aligned with the first mating structure to ensure that the oil fluid can smoothly flow into the filtering structure.

[0025] In some technical solutions, optionally, it further includes: a first seal provided between the connection port and the first mating structure; among them, the connection port is sleeved outside the first mating structure; or the first mating structure is sleeved outside the connection port.

[0026] In this technical solution, the first seal is usually made of rubber, silica gel or other elastic materials, and is designed as an O-ring seal or other forms of gaskets. The first seal is arranged between the connection port of the cylindrical filter structure and the first mating structure to ensure the sealing of the oil flow, prevent oil leakage during the filtering process, and ensure that the oil can only flow through the predetermined oil passage.

[0027] Among them, the connection port of the cylindrical filter structure is directly sleeved outside the first mating structure, and the first seal is located between the two.

[0028] In addition, the first mating structure is sleeved outside the connection port of the cylindrical filter structure, and the first seal is located between the two.

[0029] Regardless of which design, the first seal can ensure the sealing between the connection port and the first mating structure, prevent oil leakage. Of course, any of these solutions is convenient for installation and disassembly, and facilitates replacement and cleaning during maintenance.

[0030] In some technical solutions, optionally, it further includes: a sedimentation tank, which is arranged at one end of the bracket body away from the cover plate.

[0031] In this technical solution, the sedimentation tank is arranged at one end of the bracket body away from the cover plate to form a collection area for impurities in the oil. Specifically, the sedimentation tank is located at the bottom or side of the bracket body, away from the cover plate, facilitating the collection of impurities during the filtering process. The sedimentation tank can collect the intercepted impurities during the filtering process, prevent these impurities from re-entering the oil circulation system and affecting the system performance. Since the sedimentation tank is located at one end of the bracket body, the deposited impurities can be conveniently cleaned during maintenance, improving the maintenance efficiency.

[0032] The design of the sedimentation tank prevents impurities from re-entering the oil circulation system, ensures the cleanliness of the oil, reduces the burden on the filter element by collecting most of the impurities, and extends the service life of the filter element.

[0033] Among them, if the sedimentation tank is arranged at the bottom of the bracket body, the impurities in the oil will be deposited here under the action of gravity, facilitating regular cleaning.

[0034] If the sedimentation tank is arranged on the side of the bracket body, the impurities in the oil are guided to flow into the sedimentation tank through design, reducing the retention of impurities in the filtering cavity.

[0035] In some technical solutions, optionally, it further includes: a second mating structure, which is arranged on the box body; a third mating structure, which is arranged on the bracket body, and the second mating structure is connected to the third mating structure in a mating manner.

[0036] In this technical solution, a second mating structure is provided on the housing, and a third mating structure is provided on the main body of the bracket. The second mating structure is generally associated with the oil outlet or the assembly port of the housing. The second mating structure is located near the oil outlet or the assembly port of the housing and is matingly connected with the third mating structure.

[0037] The mating connection between the second mating structure and the third mating structure ensures the sealing of the oil flow path and prevents oil leakage. The two mating structures enhance the connection stability between the main body of the bracket and the housing, ensuring the stability of the entire filtration system during operation.

[0038] In some technical solutions, optionally, it further includes: a second seal, provided between the second mating structure and the third mating structure.

[0039] In this technical solution, the second seal is usually made of rubber, silicone or other elastic materials and is designed as an O-ring or other forms of gaskets. The second seal is provided between the second mating structure and the third mating structure to ensure the sealing of the oil flow.

[0040] It can be understood that the setting of the second seal can prevent oil leakage at the connection between the second mating structure and the third mating structure, ensuring that the oil can only flow through the predetermined oil passage.

[0041] In some technical solutions, optionally, the extending direction of the filtering structure is parallel to the normal of the plane where the oil outlet is located.

[0042] In this technical solution, the filtering structure is cylindrical. By restricting its extending direction to be parallel to the normal of the plane where the oil outlet is located, it ensures that the flow path of the oil during the filtering process matches the arrangement of the oil outlet.

[0043] It can be understood that this arrangement of the filtering structure, on the one hand, helps the oil to flow more smoothly during the filtering process, reducing the residence time and pressure loss of the oil in the filtering chamber, and on the other hand, makes the flow of the oil inside the filtering structure more uniform, improving the filtering efficiency.

[0044] The oil flows more directly to the oil outlet after filtering, reducing the deposition chance of impurities in the filtering chamber. This helps to keep the filtering chamber clean and reduces the maintenance frequency.

[0045] At the same time, the contact area of the oil during the filtering process is larger, increasing the contact time between the filtering medium and the oil, thereby improving the filtering efficiency.

[0046] In some technical solutions, optionally, it further includes: a partition plate, provided inside the housing. The partition plate is provided with a plurality of first holes, and the space inside the housing is divided into a first chamber and a second chamber by the partition plate; a return oil pipe, provided in the first chamber; wherein, the bracket assembly is provided in the second chamber.

[0047] In this technical solution, a partition is provided inside the box body, and the space inside the box body is divided into two independent chambers, namely the first chamber and the second chamber.

[0048] A plurality of first holes are provided on the partition to allow the oil to flow from one chamber to the other through these holes while maintaining the independence of the chambers.

[0049] In addition, an oil return pipe is arranged in the first chamber. The oil return pipe is located in the first chamber and adjacent to the partition. The oil flows into the box body through the oil return pipe. The oil return pipe is used to return the oil from the external system to the box body to ensure that the oil can enter the filtration system for filtration. On this basis, due to the provision of a plurality of first holes, the number of bubbles generated when the oil flows into the box body through the oil return pipe can be effectively reduced.

[0050] An embodiment of the second aspect of the present application provides a charging pile, including: a pile body; any one of the above-mentioned fuel tank assemblies provided inside the pile body; a charging gun connected to the pile body through a connecting wire, the connecting wire including a power supply wire and a cooling pipe for cooling the power supply wire; an oil pump, one end of the oil pump is connected to the oil outlet of the fuel tank assembly, and the other end is connected to the cooling pipe.

[0051] According to the charging pile provided by the present application, including a pile body, a charging gun, an oil pump and a fuel tank assembly, the pile body is the main structure of the charging pile, and equipment such as a fuel tank assembly and an oil pump are installed inside.

[0052] The charging gun is connected to the pile body through a connecting wire to provide a power transmission function. At the same time, the cooling pipe is used to cool the power supply wire. The oil pump connects the oil outlet of the fuel tank assembly and the cooling pipe, and is responsible for circulating the cooling oil to the cooling pipe of the charging gun for cooling. The power supply wire is responsible for power transmission and connects the charging pile and the charging equipment. The cooling pipe is parallel to the power supply wire and is responsible for cooling the power supply wire.

[0053] One end of the oil pump is connected to the oil outlet of the fuel tank assembly, and the other end is connected to the cooling pipe, so as to draw the cooling oil out of the oil outlet of the fuel tank assembly and transport it to the charging gun through the cooling pipe for cooling.

[0054] Since the charging pile includes any one of the above-mentioned fuel tank assemblies, it has the beneficial effects of any one of the above-mentioned fuel tank assemblies, which will not be elaborated here.

[0055] The additional aspects and advantages of the present utility model will become apparent in the following description section or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 Shows a schematic structural diagram of a box body according to an embodiment of the present utility model;

[0057] Figure 2Shows a schematic structural diagram of a fuel tank assembly according to an embodiment of the present utility model;

[0058] Figure 3 Shows a schematic structural diagram of a cover plate according to an embodiment of the present utility model;

[0059] Figure 4 Shows a schematic structural diagram of a bracket assembly according to an embodiment of the present utility model;

[0060] Figure 5 Shows a schematic structural diagram of a filtering structure according to an embodiment of the present utility model;

[0061] Figure 6 Shows a schematic assembly structural diagram of a bracket assembly and a filtering structure according to an embodiment of the present utility model;

[0062] Figure 7 Shows a schematic structural diagram of a fuel tank assembly according to an embodiment of the present utility model;

[0063] Figure 8 Shows a schematic structural diagram of a fuel tank assembly according to an embodiment of the present utility model;

[0064] Figure 9 Shows a schematic structural diagram of a filtering structure according to an embodiment of the present utility model;

[0065] Figure 10 Shows Figure 9 The cross-sectional structural diagram of A-A in;

[0066] Figure 11 Shows a schematic structural diagram of a fuel tank assembly according to an embodiment of the present utility model;

[0067] Figure 12 Shows a schematic structural diagram of a fuel tank assembly according to an embodiment of the present utility model;

[0068] Figure 13 Shows a schematic structural diagram of a fuel tank assembly according to an embodiment of the present utility model;

[0069] Figure 14 Shows a schematic structural diagram of a charging pile according to an embodiment of the present utility model;

[0070] Figure 15 Shows an exploded structural diagram of a bracket main body and a connection cover according to an embodiment of the present utility model.

[0071] Wherein, Figures 1 to 15 The corresponding relationship between the reference numerals and the component names in is:

[0072] 100: Fuel tank assembly; 102: Box body; 1022: Oil outlet; 1024: Assembly port; 1032: First chamber; 1034: Second chamber; 104: Cover plate; 106: Bracket assembly; 1062: Connecting cover; 1064: Bracket main body; 1066: Oil inlet hole; 1068: First mating structure; 1070: Deposition tank; 1072: Filter chamber; 108: Filter structure; 1082: Connection port; 1092: Filter element holder; 1094: Filter element; 110: First seal; 1122: Second mating structure; 1124: Third mating structure; 114: Second seal; 116: Partition; 1162: First hole; 118: Return oil pipe; 1202: Claw; 1204: Card slot;

[0073] 200: Charging pile; 202: Pile body; 204: Charging gun; 206: Connecting wire; 2062: Power supply wire; 2064: Cooling pipe; 208: Oil pump. Detailed implementation manners

[0074] In order to more clearly understand the above objects, features and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0075] Many specific details are set forth in the following description in order to fully understand the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited to the limitations of the specific embodiments disclosed below.

[0076] The following refers to Figures 1 to 15 Describe some embodiments according to the present invention.

[0077] A fuel tank assembly 100 proposed in this embodiment, as Figure 1 and Figure 2 shown, includes a box body 102, a cover plate 104, a bracket assembly 106 and a filter structure 108. By integrating the filter structure 108 inside the fuel tank and connecting the bracket assembly 106 with the filter structure 108 to the cover plate 104, on the one hand, it is convenient to make the cooling oil pass through efficient filtration before entering the oil pump 208, extending the service life of the equipment and reducing equipment failures caused by unclean oil. On the other hand, since the bracket assembly 106 is connected to the cover plate 104, when replacing and cleaning the filter structure 108, among which, Figure 1 is a schematic structural diagram of the cover plate 104 and the box body 102 being fully assembled in place, as Figure 2As shown, the cover plate 104 and the bracket assembly 106 are pre-assembled, and the filter structure 108 is installed in the bracket assembly 106, so that the cover plate 104, the bracket assembly 106 and the filter structure 108 can be regarded as an integral structure. When the cover plate 104 is removed, the bracket assembly 106 and the internal filter structure 108 are taken out together through the connection between the cover plate 104 and the bracket assembly 106, which is more convenient to operate. In general, the oil tank assembly 100 of this solution is suitable for scenes with limited space and high requirements for integration, such as the cooling system of the supercharging pile. There is no need to drain the oil during maintenance, and the handling of the filter structure 108 is simpler, easy to operate, and saves time and cost.

[0078] The specific structure of the cover plate 104 is as follows: Figure 3 shown.

[0079] like Figure 1 and Figure 2 As shown, specifically, the box body 102 is the main structure of the entire assembly, and the cooling oil is stored inside. The box body 102 is provided with an oil outlet 1022 and an assembly port 1024. The oil outlet 1022 is connected to the external oil pump 208, and the assembly port 1024 is connected to the cover plate 104. Specifically, the cover plate 104 can cover the assembly port 1024 by its own gravity, or can also be matched with the wall surface of the box body 102 where the assembly port 1024 is provided by screws, bolts, buckles, etc. to close the assembly port 1024. Generally, the assembly port 1024 is located at the top or side of the box body 102, and the oil outlet 1022 is located at the bottom or side of the box body 102. The cover plate 104 is used to close the assembly opening 1024 of the box body 102, wherein the cover plate 104 is detachably connected to the assembly opening 1024 and fixedly connected to the bracket assembly 106. The cover plate 104 is installed at the assembly opening 1024 position of the box body 102 and is fixed by screws or snaps. On the one hand, it is used to seal the box body 102 to prevent oil leakage, and on the other hand, it is also used to support the installation and disassembly of the bracket assembly 106.

[0080] The support assembly 106 is installed in the housing 102, and a filter cavity 1072 is formed therein. The support assembly 106 is mainly used to support the filter structure 108 and form the filter cavity 1072. The support assembly 106 is located inside the housing 102, fixed below the cover plate 104, and is in the oil to ensure that the cooling oil is filtered before entering the oil outlet 1022. It should be added that the support assembly 106 and the cover plate 104 are detachably connected, so that after the cover plate 104 is removed, the internal filter structure 108 can be removed by disassembly for cleaning or replacement.

[0081] like Figure 6As shown, the filtering structure 108 is installed in the filtering cavity 1072 of the bracket assembly 106. The filtering structure 108 is connected to the bracket assembly 106 and the oil outlet 1022. The filtering structure 108 is located inside the bracket assembly 106, and the oil flow path passes through the filtering structure 108, thereby filtering impurities in the cooling oil to ensure the cleanliness of the oil entering the oil outlet 1022 and improving the system reliability.

[0082] Among them, as Figure 9 , Figure 10 and Figure 11 shown, the filtering structure 108 includes a filter element 1094 that plays a filtering role and a filter element holder 1092 for supporting the filter element 1094.

[0083] Generally speaking, the cooling oil flows into the box body 102 through the return oil pipe 118 and is stored in the box body 102. When the oil pump 208 works, the oil passes through the bracket assembly 106 and enters the filtering cavity 1072. The oil is filtered by the filtering structure 108 in the filtering cavity 1072. A sedimentation tank is designed at the bottom of the bracket assembly 106, and dirt is deposited at the bottom, which can be easily cleaned during maintenance. Finally, the filtered clean oil is discharged from the box body 102 through the oil outlet 1022 and enters the oil pump 208 and the cooling system for recycling.

[0084] When it is necessary to clean or replace the filtering structure 108, remove the cover plate 104, take out the bracket assembly 106 and the filtering structure 108 for cleaning or replacement. There is no need to drain the oil, and the operation is simple.

[0085] The bracket assembly 106 includes a connection cover 1062 and a bracket body 1064. The connection cover 1062 is the upper structure of the bracket assembly 106 and is usually detachably connected to the cover plate 104 through threads or snaps to ensure convenient disassembly and installation during maintenance.

[0086] The connection cover 1062 is located above the bracket body 1064 and is in direct contact with the cover plate 104. The connection cover 1062 not only plays a role in fixing the bracket body 1064, but also prevents oil leakage through a sealing design to ensure the sealing performance of the filtering cavity 1072.

[0087] As Figure 4 shown, the bracket body 1064 is the lower structure of the bracket assembly 106 and is usually made of metal or plastic materials. A plurality of oil inlet holes 1066 are provided on the wall surface. The bracket body 1064 is detachably connected to the connection cover 1062, and a filtering cavity 1072 is formed after the two are connected. The bracket body 1064 is located inside the box body 102. The bottom of the bracket body 1064 can be in direct contact with the bottom of the box body 102 or can be in indirect contact with the bottom of the box body 102, that is, through an additional structure for support. The top of the bracket body 1064 is in contact with the connection cover 1062.

[0088] Among them, as Figure 6 shown, the filtering structure 108 is arranged between the bracket body 1064 and the connecting cover 1062, and the oil is guided into the filtering chamber 1072 through the oil inlet hole 1066. Its design ensures that the oil is effectively filtered before entering the oil pump 208.

[0089] The filtering chamber 1072 is a space formed by enclosing the bracket body 1064 and the connecting cover 1062. The filtering structure 108 is installed inside. The oil enters the filtering chamber 1072 through the oil inlet hole 1066 and flows out after passing through the filtering structure 108. The filtering chamber 1072 provides the necessary space for the filtering structure 108 to ensure that the oil does not leak during the filtering process, and at the same time, the oil is purified through the filtering structure 108.

[0090] The oil inlet hole 1066 is a plurality of small holes on the wall of the bracket body 1064, which is used to guide the oil into the filtering chamber 1072. The oil inlet hole 1066 is in direct contact with the oil inside the box body 102, and the cooling oil can enter the filtering chamber 1072 through these holes.

[0091] In one embodiment, the oil inlet holes 1066 are usually evenly distributed on the wall of the bracket body 1064 to ensure that the oil can enter the filtering chamber 1072 evenly. The design of the oil holes ensures that the oil can be evenly distributed before entering the filtering chamber 1072, avoiding the reduction of the filtering effect caused by the too fast local oil flow rate.

[0092] In a specific embodiment, as Figure 5 and Figure 6 shown, the first mating structure 1068 is arranged on the bracket body 1064 and is matingly connected with the connection port 1082 of the cylindrical filtering structure 108 in Figure 10 to ensure the continuity and sealing of the oil flow. Among them, the first mating structure 1068 can be located inside or at the bottom of the bracket body 1064. As Figure 6 shown, the first mating structure 1068 is aligned with the connection port 1082 of the filtering structure 108. Specifically, the first mating structure 1068 is snapped into the connection port 1082, and the cooling oil in the filtering chamber 1072 of the two can flow out through the inner space of the first mating structure through the oil outlet 1022.

[0093] The filtering structure 108 is cylindrical. As Figure 12 shown, one end of the filtering structure 108 is provided with a connection port 1082, which is matingly connected with the first mating structure 1068. The connection port 1082 is aligned with the first mating structure 1068 to ensure that the oil can flow smoothly into the filtering structure 108.

[0094] In some embodiments, optionally, as Figure 8As shown, the first seal 110 is typically made of rubber, silicone, or other elastic materials and is designed as an O-ring seal or other form of gasket. The first seal 110 is disposed between the connection port 1082 of the cylindrical filter structure 108 and the first mating structure 1068 to ensure the sealing of the oil flow, prevent oil leakage during the filtration process, and ensure that the oil can only flow through the predetermined oil passage.

[0095] Among them, as Figure 6 and Figure 7 shown, the connection port 1082 of the cylindrical filter structure 108 is directly sleeved outside the first mating structure 1068, and the first seal 110 is located between the two.

[0096] In addition, as Figure 2 shown, the first mating structure 1068 is sleeved outside the connection port 1082 of the cylindrical filter structure 108, and the first seal 110 is located between the two.

[0097] Regardless of which design, the first seal 110 can ensure the sealing between the connection port 1082 and the first mating structure 1068, prevent oil leakage. Of course, any of the solutions is convenient for installation and disassembly, and is convenient for replacement and cleaning during maintenance.

[0098] In some embodiments, optionally, the sedimentation tank 1070 is disposed at one end of the bracket body 1064 away from the cover plate 104 to form a collection area for impurities in the oil. Specifically, the sedimentation tank 1070 is located at the bottom or side of the bracket body 1064, away from the cover plate 104, to facilitate the collection of impurities during the filtration process. The sedimentation tank 1070 can collect the impurities intercepted during the filtration process, prevent these impurities from re-entering the oil circulation system and affecting the system performance. Since the sedimentation tank 1070 is located at one end of the bracket body 1064, the deposited impurities can be conveniently cleaned during maintenance, improving the maintenance efficiency.

[0099] The design of the sedimentation tank 1070 prevents impurities from re-entering the oil circulation system, ensures the cleanliness of the oil, reduces the burden on the filter element 1094 by collecting most of the impurities, and extends the service life of the filter element 1094.

[0100] Among them, if the sedimentation tank 1070 is disposed at the bottom of the bracket body 1064, the impurities in the oil are deposited here under the action of gravity, which is convenient for regular cleaning.

[0101] If the sedimentation tank 1070 is disposed on the side of the bracket body 1064, the impurities in the oil are guided to flow into the sedimentation tank 1070 through design, reducing the retention of impurities in the filtration chamber 1072.

[0102] In a specific embodiment, as Figure 1 and Figure 8As shown, a second mating structure 1122 is provided on the housing 102, and a third mating structure 1124 is provided on the bracket main body 1064. The second mating structure 1122 is generally associated with the oil outlet 1022 of the housing 102. The second mating structure 1122 is located near the oil outlet 1022 of the housing 102 and is matingly connected to the third mating structure 1124.

[0103] The mating connection between the second mating structure 1122 and the third mating structure 1124 ensures the sealing of the oil flow path and prevents oil leakage. The two mating structures enhance the connection stability between the bracket main body 1064 and the housing 102, ensuring the stability of the entire filtration system during operation.

[0104] In a specific embodiment, optionally, the second seal 114 is typically made of rubber, silicone, or other elastic materials and is designed as an O-ring or other form of gasket. The second seal 114 is provided between the second mating structure 1122 and the third mating structure 1124 to ensure the sealing of the oil flow.

[0105] It can be understood that the provision of the second seal 114 can prevent oil leakage at the connection between the second mating structure 1122 and the third mating structure 1124, ensuring that the oil can only flow through the predetermined oil passage.

[0106] In a specific embodiment, optionally, as Figure 7 shown, the filter structure 108 is cylindrical. By restricting its extension direction to be parallel to the normal of the plane where the oil outlet 1022 is located, specifically the Figure 7 vertical dotted line in the middle, it ensures that the oil flow path during filtration matches the arrangement of the oil outlet 1022.

[0107] It can be understood that this arrangement of the filter structure 108, on the one hand, helps the oil to flow more smoothly during filtration, reducing the residence time and pressure loss of the oil in the filtration chamber 1072. On the other hand, it can make the oil flow more uniformly inside the filter structure 108, improving the filtration efficiency.

[0108] The oil flows more directly to the oil outlet 1022 after filtration, reducing the deposition chance of impurities in the filtration chamber 1072. This helps to keep the filtration chamber 1072 clean and reduces the maintenance frequency.

[0109] At the same time, the contact area of the oil during filtration is larger, increasing the contact time between the filter medium and the oil, thereby improving the filtration efficiency.

[0110] In a specific embodiment, optionally, as Figure 13As shown, a partition 116 is provided inside the box body 102. The partition 116 divides the space inside the box body 102 into two chambers, namely the first chamber 1032 and the second chamber 1034.

[0111] A plurality of first holes 1162 are provided on the partition 116, allowing the oil to flow from one chamber to another through these holes while maintaining the independence of the chambers.

[0112] In addition, an oil return pipe 118 is arranged in the first chamber 1032. The oil return pipe 118 is located in the first chamber 1032 and is adjacent to the partition 116. The oil flows into the first chamber 1032 in the box body 102 through the oil return pipe 118. The oil return pipe 118 is used to return the oil from the external system to the box body 102. Due to the arrangement of a plurality of first holes 1162, when the cooling oil gradually accumulates, the cooling oil will flow into the second chamber 1034 through the first holes 1162 on the partition 116. Under the action of the oil pump, the cooling oil flowing out through the oil outlet 1022 can all pass through the support assembly 106 and the internal filtering structure 108.

[0113] Among them, by arranging the partition 116 and the first holes 1162 provided on the partition 116, the number of bubbles generated when the oil flows into the box body 102 through the oil return pipe 118 can be effectively reduced.

[0114] As Figure 14 shown, another embodiment of the present application provides a charging pile 200, including a pile body 202, a charging gun 204, an oil pump 208 and a fuel tank assembly 100. The pile body 202 serves as the main structure of the charging pile 200, and devices such as a fuel tank assembly 100 and an oil pump 208 are installed inside.

[0115] The charging gun 204 is connected to the pile body 202 through a connecting wire 206, providing a power transmission function. At the same time, a cooling pipe 2064 is used to cool the power supply wire 2062. The oil pump 208 is connected to the oil outlet 1022 of the fuel tank assembly 100 and the cooling pipe 2064, and is responsible for circulating the cooling oil to the cooling pipe 2064 of the charging gun 204 for cooling. The power supply wire 2062 is responsible for power transmission and connects the charging pile 200 and the charging device. The cooling pipe 2064 is parallel to the power supply wire 2062 and is responsible for cooling the power supply wire 2062.

[0116] One end of the oil pump 208 is connected and communicated with the oil outlet 1022 of the fuel tank assembly 100, and the other end is connected to the cooling pipe 2064, so as to draw out the cooling oil from the oil outlet 1022 of the fuel tank assembly 100 and transport it to the charging gun 204 through the cooling pipe 2064 for cooling.

[0117] Since the charging pile 200 includes any one of the above fuel tank assemblies 100, it has the beneficial effects of any one of the above fuel tank assemblies 100, which will not be elaborated here.

[0118] In a specific embodiment, a fuel tank assembly is proposed to solve the problem of oil filtration in the cooling system of the ultra-fast charging gun while ensuring the compactness of the system structure without additional design dimensions. At the same time, it also ensures convenient later maintenance, and maintenance can be carried out without draining the liquid.

[0119] Among them, the filter element is installed in the bracket housing and integrated into the fuel tank to ensure that the oil must pass through the filter element when being sucked out from the outlet. Due to the structural design of the bracket housing, dirt will be deposited at the bottom of the bracket housing, and subsequent maintenance only requires removing the bracket housing together with the filter element and rinsing it to complete the maintenance.

[0120] The oil is filtered when being pumped out of the fuel tank by the oil pump, improving the life and reliability of the system.

[0121] At the same time, due to the existence of the bracket housing, the maintenance period is long, and disassembly, maintenance and installation are convenient.

[0122] At the same time, because it is integrated inside the fuel tank, space is saved.

[0123] Oil flow direction: The oil returns to the fuel tank from the top pipe, and the internal pipe extends below the liquid level to prevent the oil from splashing and affecting the accuracy of the float sensor. The normal height of the oil should be higher than the position of the holes on the filter element bracket to ensure that the oil can freely enter the filter element bracket. When the oil pump starts to work, the negative pressure generated at the oil suction port of the oil pump causes the oil to pass through the filter screen on the filter element and enter the interior and flow to the oil suction port. The filtered impurities are left outside and inside the bracket of the filter element.

[0124] An O-ring seal is provided between the filter element (i.e., the filter element structure) and the filter element bracket (i.e., the bracket assembly), and between the filter element bracket and the fuel tank to ensure that the oil only enters the oil pump and cannot leak from other areas.

[0125] The specific installation sequence is as follows:

[0126] The filter element bracket is divided into a main body (i.e., the bracket main body) and a cover (i.e., the connecting cover). First, insert the filter element into the center of the main body through the seal ring, and then press the cover onto the main body. As Figure 15 shown, the bracket main body 1064 is provided with a claw 1202, and the connecting cover 1062 has a slot 1204. After being pressed tightly, it can ensure locking and limit the filter element. The filter element bracket installed with the filter element is called the filter element assembly;

[0127] A pipe with threads is welded below the fuel tank cover, and the filter element assembly is connected to the fuel tank cover through the threads above the cover of the filter element bracket;

[0128] Align the fuel tank cover installed with the filter element assembly with the oil outlet of the fuel tank and insert it, and then cover and lock the screw to complete the installation.

[0129] During maintenance, the screw on the cover can be unscrewed, and then the filter element assembly can be pulled out together with the fuel tank cover to carry out impurity removal and disassembly and cleaning.

[0130] It should be added that in the above specific embodiments, the oil filtration system is integrated inside the fuel tank, saving system space. When the oil is pumped out of the fuel tank by the oil pump, it must pass through the filter element, and the filter element can be replaced without draining the liquid, and the maintenance period is long.

[0131] Specifically, the oil returns to the fuel tank through the top pipe, and the internal pipe extends below the liquid level to prevent the oil from splashing and affecting the accuracy of the float sensor. The normal height of the oil is higher than the position of the hole (i.e., the oil inlet hole) of the filter element support, ensuring that the oil can freely enter the filter element support.

[0132] When the oil pump starts to work, the negative pressure generated at the oil suction port of the oil pump causes the oil to pass through the filter screen on the filter element and flow into the interior towards the oil suction port. The filtered impurities are left outside the filter element and inside the support.

[0133] By optimizing the design and installation method of the filter, not only can the service life of the equipment be extended, but also the maintenance cost can be reduced, and the reliability and efficiency of the overall system can be improved.

[0134] According to the fuel tank assembly and the charging pile provided by the present utility model, on the one hand, it is convenient to ensure that the cooling oil must pass through high-efficiency filtration before entering the oil pump, extending the service life of the equipment and reducing equipment failures caused by unclean oil. On the other hand, since the support assembly is connected to the cover plate, when replacing and cleaning the filtering structure, the cover plate can be directly removed, and the support assembly and the internal filtering structure will be taken out together, making the operation more convenient.

[0135] In the present utility model, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "plural" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0136] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0137] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0138] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fuel tank assembly, characterized in that, Comprising: A box body, the box body is provided with an oil outlet, and the box body is provided with an assembly port; A cover plate, detachably connected to the assembly port; A bracket assembly, disposed inside the box body, and the bracket assembly is detachably connected to the cover plate, and a filtering cavity is formed inside the bracket assembly; A filtering structure, disposed in the filtering cavity, and the filtering structure is communicated with the oil outlet; Wherein, the cooling oil in the box body is discharged outwards through the bracket assembly and the filtering structure through the oil outlet.

2. The fuel tank assembly according to claim 1, wherein, The bracket assembly specifically includes: A connection cover, detachably connected to the cover plate; A bracket main body, detachably connected to the connection cover, and the bracket main body and the connection cover enclose to form the filtering cavity; Wherein, a plurality of oil inlet holes are provided on the wall surface of the bracket main body.

3. The fuel tank assembly according to claim 2, characterized in that Further comprising: A first fitting structure, disposed on the bracket main body, and a partial oil passage is formed inside the first fitting structure; Wherein, the filtering structure is in a cylindrical shape, and one end of the filtering structure is provided with a connection port, and the connection port is fitted and connected with the first fitting structure.

4. The fuel tank assembly according to claim 3, characterized in that, Further comprising: A first sealing member, disposed between the connection port and the first fitting structure; Wherein, the connection port is sleeved outside the first fitting structure; or the first fitting structure is sleeved outside the connection port.

5. The fuel tank assembly according to claim 2, characterized in that, Further comprising: A sedimentation tank, disposed at one end of the bracket main body away from the cover plate.

6. The fuel tank assembly according to claim 2, wherein, Further comprising: A second fitting structure, disposed on the box body; A third fitting structure, disposed on the bracket main body, and the second fitting structure is fitted and connected with the third fitting structure.

7. The fuel tank assembly according to claim 6, wherein, Further comprising: A second sealing member, disposed between the second fitting structure and the third fitting structure.

8. The fuel tank assembly according to any one of claims 1 to 7, characterized in that, The extending direction of the filtering structure is parallel to the normal line of the plane where the oil outlet is located.

9. The fuel tank assembly according to any one of claims 1 to 7, characterized in that Further comprising: A partition plate, disposed inside the box body, a plurality of first holes are provided on the partition plate, and the space inside the box body is divided into a first chamber and a second chamber by the partition plate; A return oil pipe, disposed in the first chamber; Wherein, the bracket assembly is disposed in the second chamber.

10. A charging pile, characterized in that, Comprising: A pile body; The fuel tank assembly according to any one of claims 1 to 9, disposed inside the pile body; A charging gun, connected to the pile body through a connecting wire, and the connecting wire includes a power supply wire and a cooling pipe for cooling the power supply wire; An oil pump, one end of the oil pump is communicated with the oil outlet of the fuel tank assembly, and the other end is connected to the cooling pipe.

Images