A circulating pump, a liquid cooling system and a charging pile

Abstract

This application provides a circulating pump, a liquid cooling system, and a liquid-cooled charging pile. The circulating pump includes: a housing, the housing including a pump head chamber and a motor chamber that communicate with each other; a rotor shaft, disposed within the housing and extending from the motor chamber to the pump head chamber; a pump head assembly, disposed within the pump head chamber, the pump head assembly including an upper end cover, a lower end cover, a cylinder liner, and a plurality of sliding vanes, the plurality of sliding vanes being respectively accommodated in a plurality of sliding vane slots of a pump head rotor integrally formed with the rotor shaft, the upper end cover, the lower end cover, and the cylinder liner forming a volumetric chamber; a motor assembly, disposed within the motor chamber, the motor assembly including a stator fixed within the motor chamber and a motor rotor mounted on the rotor shaft; and a rear cover, connected to the housing and located on one side of the motor chamber, the rear cover containing a controller for controlling the motor assembly.

Description

Technical Field

[0001] This application relates to the field of charging pile technology, and in particular to a circulating pump, a liquid cooling system and a charging pile. Background Technology

[0002] In the field of new energy vehicle charging, super-fast charging is growing rapidly due to its advantages such as fast charging speed. It requires a dedicated liquid-cooled charging gun cable to support charging, and the liquid-cooled charging gun cable also needs to be equipped with a liquid cooling system to balance the heat generated by its rapid charging. The liquid cooling system mainly consists of a cooling fan, radiator, and circulation pump, among which the circulation pump is crucial. It is responsible for circulating the fluid medium in the liquid-cooled charging gun cable and is the power heart of the entire system.

[0003] Currently, the circulating pumps in liquid cooling systems on the market are mainly divided into two categories: gear pumps and vane pumps, primarily originating from the automotive cooling field. However, current circulating pumps have the following main drawbacks: their overall size is relatively large, resulting in a larger liquid cooling system, which contradicts the trend of continuously shrinking charging pile dimensions; gear pumps are noisy and prone to jamming and stopping when there are foreign objects in the medium; vane pumps are prone to contaminating the fluid medium; and their sealing performance is poor, with dynamic seals present, making them prone to leakage.

[0004] Therefore, it is desirable to provide a circulating pump that can solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this application is that current circulating pumps have problems such as large size, high noise, easy jamming and shutdown, and poor sealing.

[0006] This application provides a circulating pump, comprising: a housing, the housing including a communicating pump head chamber and a motor chamber; a rotor shaft disposed within the housing and extending from the motor chamber to the pump head chamber; a pump head assembly disposed within the pump head chamber, the pump head assembly including an upper end cover, a lower end cover, a cylinder liner, and a plurality of sliding vanes, the plurality of sliding vanes being respectively accommodated in a plurality of sliding vane slots of a pump head rotor integrally formed with the rotor shaft, the upper end cover, the lower end cover, and the cylinder liner forming a volumetric chamber; a motor assembly disposed within the motor chamber, the motor assembly including a stator fixed within the motor chamber and a motor rotor mounted on the rotor shaft; and a rear cover connected to the housing and located on one side of the motor chamber, the rear cover containing a controller for controlling the motor assembly.

[0007] In some embodiments of this application, at least one of the upper end cover, lower end cover, cylinder liner, and sliding vane is made of PEEK-based composite material.

[0008] In some embodiments of this application, the circulating pump further includes a clamping ring located on one side of the pump head chamber and connected to the housing to seal the pump head chamber.

[0009] In some embodiments of this application, the outer wall of the tightening ring and the inner wall of the outer shell are provided with matching threaded structures, and the tightening ring is threadedly connected to the outer shell through the threaded structures.

[0010] In some embodiments of this application, a first sealing ring and a gasket are further provided between the tightening ring and the outer shell.

[0011] In some embodiments of this application, the circulating pump further includes an isolation sleeve disposed between the stator and the rotor to isolate the stator and the rotor.

[0012] In some embodiments of this application, a second sealing ring is further provided between the isolation sleeve and the outer shell.

[0013] In some embodiments of this application, a third sealing ring is also provided between the back cover and the outer shell.

[0014] In some embodiments of this application, the end of the rotor shaft is provided with an end sleeve to support the rotor shaft.

[0015] In some embodiments of this application, the rotor shaft passes through the upper end cover and the lower end cover and is supported by the upper end cover and the lower end cover.

[0016] In some embodiments of this application, the portion of the rotor shaft located at the connection between the motor chamber and the pump head chamber is further fitted with an intermediate shaft sleeve.

[0017] This application also provides a liquid cooling system, comprising: a pump module, the pump module including a circulation pump as described above and a coolant reservoir, the coolant reservoir having a liquid output port and a liquid return port, the circulation pump being used to circulate the fluid medium in the coolant reservoir between the pump module and the liquid-cooled charging pile; and a heat dissipation module, the heat dissipation module including heat sinks and a cooling fan, the heat dissipation module being used to dissipate heat from the fluid medium of the pump module.

[0018] This application also provides a liquid-cooled charging pile, including: a charging pile body, a liquid-cooled charging gun wire, and a liquid-cooling system as described above, wherein the liquid output interface of the liquid-cooling system is connected to the liquid input port of the liquid-cooled charging gun wire, and the liquid return interface of the liquid-cooling system is connected to the liquid output port of the liquid-cooled charging gun wire.

[0019] The circulating pump described in this application has an integrated outer shell for the pump head chamber and the motor chamber, resulting in a compact structure and small size, which helps to reduce the overall size of the liquid cooling system. The pump head assembly is made of PEEK-based composite material, which has advantages such as self-lubrication, low friction, low noise, good wear resistance, long service life, and strong stability. The material properties are stable and will not contaminate the fluid medium. The rotor shaft is supported by the upper end cover, lower end cover, intermediate shaft sleeve, and end shaft sleeve simultaneously, and the rotor has end face support at both the top and bottom, ensuring stable operation and preventing jamming. The overall structure adopts static sealing, eliminating dynamic sealing and providing excellent sealing performance. Attached Figure Description

[0020] The following accompanying drawings describe in detail the exemplary embodiments disclosed in this application. The same reference numerals denote similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting and exemplary, and the drawings are for illustrative purposes only and are not intended to limit the scope of this application. Other embodiments may similarly fulfill the intent of this application. It should be understood that the drawings are not drawn to scale.

[0021] in:

[0022] Figure 1 This is a schematic diagram of the overall structure of a circulating pump according to some embodiments of this application;

[0023] Figure 2 and Figure 3 This is a schematic diagram of the longitudinal section structure of a circulating pump according to some embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the rotor shaft of a circulating pump according to some embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the structure of a liquid cooling system according to some embodiments of this application;

[0026] Figure 6 This is a structural schematic diagram of a liquid-cooled charging pile according to some embodiments of this application. Detailed Implementation

[0027] The following description provides specific application scenarios and requirements for this application, intended to enable those skilled in the art to make and use the content of this application. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this application. Therefore, this application is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0028] The technical solution of this application will be described in detail below with reference to the embodiments and accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the overall structure of a circulating pump according to some embodiments of this application. Figure 2 and Figure 3 This is a schematic diagram of the longitudinal section structure of a circulating pump according to some embodiments of this application. Figure 4 This is a schematic diagram of the rotor shaft of a circulating pump according to some embodiments of this application.

[0030] This application provides a circulating pump, referenced Figures 1 to 4 As shown, it includes: an integrally formed housing 100, the housing 100 including a communicating pump head chamber 102 and a motor chamber 101; a rotor shaft 107, disposed within the housing 100 and extending from the motor chamber 101 to the pump head chamber 102; and a pump head assembly, disposed within the pump head chamber 102, the pump head assembly including an upper end cover 110, a lower end cover 111, a cylinder liner 113, and a plurality of sliding vanes 112, the plurality of sliding vanes 112 being respectively accommodated in a housing integrally formed with the rotor shaft 107. The pump head rotor 109 has several vane slots, and the upper end cover 110, lower end cover 111, and cylinder liner 113 form a volumetric chamber; a motor assembly is disposed in the motor chamber 101, and the motor assembly includes a stator 120 fixed in the motor chamber 101 and a rotor 121 mounted on the rotor shaft 107; a rear cover 104 is connected to the outer shell 100 and located on one side of the motor chamber 101, and a controller 108 for controlling the motor assembly is disposed in the rear cover 104.

[0031] The circulating pump described in this application mainly comprises three parts: a pump head chamber 102, a motor chamber 101, and a rear cover 104. A motor assembly is housed in the motor chamber 101, a pump head assembly is housed in the pump head chamber 102, and a controller 108 is housed in the rear cover 104. The motor assembly provides rotational power, driving the vanes 112 of the pump head assembly to rotate via the rotor shaft 107. The controller 108 controls the operation of the motor assembly.

[0032] In some embodiments of this application, the circulating pump further includes: a clamping ring 103 located on one side of the pump head chamber 102, connected to the housing 100 to seal the pump head chamber 102.

[0033] refer to Figure 1 and Figure 2As shown, the external structure of the circulating pump described in this application mainly includes a housing 100, a rear cover 104, a clamping ring 103, a cable 105, and a cable sealing cover 106. The housing 100 includes a pump head chamber 102 and a motor chamber 101. The clamping ring 103 seals the housing 100 from the top. A controller 108 is disposed inside the rear cover 104. The rear cover 104 is fixed and sealed to the housing 100. The cable 105 of the controller 108 is led out from the side of the rear cover 104 for user wiring. The cable sealing cover 106 is used to seal the cable 105 to the rear cover 104. The housing 100 of this application is integrally formed, resulting in a compact structure.

[0034] refer to Figure 3 As shown, in some embodiments of this application, the outer wall of the tightening ring 103 and the inner wall of the outer shell 100 are provided with matching threaded structures, and the tightening ring 103 is threadedly connected to the outer shell 100 through the threaded structures.

[0035] In some embodiments of this application, a first sealing ring 114 and a gasket 115 are further provided between the tightening ring 103 and the outer shell 100 to improve sealing performance.

[0036] refer to Figure 4 As shown, a plurality of pump head rotors 109 are integrally formed on the side wall of the portion of the rotor shaft 107 located in the pump head chamber 102, surrounding the rotor shaft 107. A sliding vane groove is provided between adjacent pump head rotors 109, and the sliding vane 112 is disposed in the sliding vane groove.

[0037] refer to Figure 3 As shown, the pump head assembly includes an upper end cover 110, a lower end cover 111, a cylinder liner 113, and a plurality of sliding vanes 112. The upper end cover 110, lower end cover 111, and cylinder liner 113 form a volumetric chamber. The plurality of sliding vanes 112 are connected to the side wall of the rotor shaft 107. Specifically, the side wall of the rotor shaft 107 is provided with a sliding groove, and the plurality of sliding vanes 112 are disposed in the sliding groove. When the rotor shaft 107 rotates, it drives the sliding vanes 112 to rotate within the volumetric chamber, thereby driving the flow of fluid medium through pressure changes.

[0038] In some embodiments of this application, at least one of the upper end cover 110, lower end cover 111, cylinder liner 113, and sliding vane 112 (all of them are used in this embodiment) is made of PEEK-based composite material. PEEK-based composite material has the advantages of self-lubrication, high wear resistance, low vibration and low noise during high-speed operation; at the same time, the material itself has good stability. Compared with traditional graphite materials, which are prone to contaminating the medium, this material will not have foreign matter falling off during high-speed rotation, nor will it contaminate the fluid medium.

[0039] refer to Figure 3 As shown, the motor assembly includes a stator 120 fixed within the motor chamber 101 and a rotor 121 mounted on the rotor shaft 107. The stator 120 is fixed in place within the motor chamber 101. The rotor 121 is mounted on the rotor shaft 107, and the two are circumferentially fixed, meaning that the rotation of the rotor 121 can drive the rotation of the rotor shaft 107.

[0040] In some embodiments of this application, the circulating pump further includes an isolation sleeve 122 disposed between the stator 120 and the rotor 121 to isolate the stator 120 and the rotor 121.

[0041] In the technical solution of this application, the stator 120 and the rotor 121 are separated by the isolation sleeve 122, so that the fluid medium transmitted by the circulating pump can only exist inside the isolation sleeve 122 and the pump head chamber 102, separated from the stator 120, that is, dynamic and static separation is achieved, and dynamic sealing is eliminated.

[0042] Continue to refer to Figure 3 As shown, in some embodiments of this application, a second sealing ring 117 is further provided between the isolation sleeve 122 and the outer shell 100. The second sealing ring 117 is compressed between the isolation sleeve 122 and the outer shell 100, preventing fluid medium from leaking from the assembly gap between the isolation sleeve 122 and the outer shell 100. The isolation sleeve 122, the first sealing ring 114, and the second sealing ring 117 achieve a static seal, greatly improving the stability of the circulating pump seal.

[0043] In some embodiments of this application, a third sealing ring 124 is further provided between the rear cover 104 and the outer casing 100. The third sealing ring 124 seals the outer casing 100 and the rear cover 104, protecting the stator 120 and the controller 108 from dust and water contamination from the outside, and achieving the waterproof and dustproof requirements of the circulating pump.

[0044] In some embodiments of this application, an end sleeve 123 supporting the rotor shaft 107 is provided at the end of the rotor shaft 107. In some embodiments of this application, the rotor shaft 107 passes through the upper end cover 110 and the lower end cover 111 and is supported by the upper end cover 110 and the lower end cover 111. In some embodiments of this application, an intermediate sleeve 116 is also fitted onto the portion of the rotor shaft 107 located at the connection between the motor chamber and the pump head chamber.

[0045] In the technical solution of this application, the rotor shaft 107 is supported from top to bottom by an upper end cover 110, a lower end cover 111, an intermediate bushing 116, and an end bushing 123. Through the reasonable fit and tolerance distribution between these four parts and the rotor shaft 107, the rotor shaft 107 can rotate smoothly without easily jamming. The upper and lower end faces of the rotor 121 are supported by the lower end face of the intermediate bushing 116 and the upper end face of the end bushing 123, respectively, improving the stability of the rotor 121 during rotation.

[0046] Figure 5 This is a schematic diagram of the structure of a liquid cooling system according to some embodiments of this application.

[0047] refer to Figure 5 As shown, this application also provides a liquid cooling system, including: a pump module 210, the pump module 210 including a circulation pump 211 as described above, a coolant reservoir 212, and a control box 215, the coolant reservoir 212 having a liquid output interface 213 and a liquid return interface 214, the circulation pump 211 being used to circulate the fluid medium in the coolant reservoir 212 between the pump module and the liquid-cooled charging pile; and a heat dissipation module 220, the heat dissipation module 220 including a heat sink 221 (the heat sink 221 being located inside the heat dissipation module 220) and a cooling fan 222, the heat dissipation module 220 being used to dissipate heat from the fluid medium of the pump module.

[0048] Figure 6 This is a structural schematic diagram of a liquid-cooled charging pile according to some embodiments of this application.

[0049] refer to Figure 6 As shown, this application also provides a liquid-cooled charging pile, including: a charging pile body 310, a liquid-cooled charging gun cable 320, and a liquid cooling system 330 as described above. The liquid output port of the liquid cooling system 330 is connected to the liquid input port of the liquid-cooled charging gun cable, and the liquid return port of the liquid cooling system is connected to the liquid output port of the liquid-cooled charging gun cable. The liquid cooling system 330 is built into the charging pile body 310 and is used to cool the liquid-cooled charging gun cable 320.

[0050] The circulating pump described in this application has an integrated outer shell for the pump head chamber and the motor chamber, resulting in a compact structure and small size, which helps to reduce the overall size of the liquid cooling system. The pump head assembly is made of PEEK-based composite material, which has advantages such as self-lubrication, low friction, low noise, good wear resistance, long service life, and strong stability. The material properties are stable and will not contaminate the fluid medium. The rotor shaft is supported by the upper end cover, lower end cover, intermediate shaft sleeve, and end shaft sleeve simultaneously, and the rotor has end face support at both the top and bottom, ensuring stable operation and preventing jamming. The overall structure adopts static sealing, eliminating dynamic sealing and providing excellent sealing performance.

[0051] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0052] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a rotating connection or a sliding connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0053] Furthermore, when the terms "first," "second," "third," etc., are used in this application specification to describe various features, these terms are only used to distinguish these features and should not be construed as indicating or implying the correlation or relative importance between features or implicitly indicating the number of features indicated.

[0054] In addition, this application specification describes exemplary embodiments by referring to idealized exemplary cross-sectional views and / or plan views and / or perspective views. Therefore, differences from the illustrated shapes are foreseeable due to factors such as manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but should include deviations in shape caused, for example, by manufacturing processes. Thus, the regions shown in the figures are substantially schematic, and their shapes are not intended to illustrate the actual shapes of the regions of the device, nor to limit the scope of the exemplary embodiments.

[0055] Furthermore, this application uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this application do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0056] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0057] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A circulating pump, characterized in that, include: The housing includes a communicating pump head chamber and a motor chamber; A rotor shaft is disposed within the housing and extends from the motor chamber to the pump head chamber; A pump head assembly is disposed in the pump head chamber. The pump head assembly includes an upper end cover, a lower end cover, a cylinder liner, and a plurality of sliding vanes. The plurality of sliding vanes are respectively accommodated in a plurality of sliding vane slots of a pump head rotor integrally formed with the rotor shaft. The upper end cover, the lower end cover, and the cylinder liner constitute a volumetric chamber. A motor assembly is disposed within the motor cavity, the motor assembly including a stator fixed within the motor cavity and a motor rotor mounted on the rotor shaft; The rear cover is connected to the outer shell and located on one side of the motor chamber. A controller for controlling the motor assembly is provided inside the rear cover.

2. The circulating pump according to claim 1, characterized in that, At least one of the upper end cover, lower end cover, cylinder liner, and sliding vane is made of PEEK-based composite material.

3. The circulating pump according to claim 1, characterized in that, Also includes: A top-tightening ring, located on one side of the pump head chamber, connects to the outer casing and seals the pump head chamber.

4. The circulating pump according to claim 3, characterized in that, The outer wall of the tightening ring and the inner wall of the outer shell are provided with matching threaded structures, and the tightening ring is threadedly connected to the outer shell through the threaded structures.

5. The circulating pump according to claim 4, characterized in that, A first sealing ring and a gasket are also provided between the tightening ring and the outer shell.

6. The circulating pump according to claim 1, characterized in that, Also includes: An isolation sleeve is disposed between the stator and the rotor to isolate the stator and the rotor.

7. The circulating pump according to claim 6, characterized in that, A second sealing ring is also provided between the isolation sleeve and the outer shell.

8. The circulating pump according to claim 1, characterized in that, A third sealing ring is also provided between the rear cover and the outer shell.

9. The circulating pump according to claim 1, characterized in that, The rotor shaft is provided with an end sleeve to support the rotor shaft.

10. The circulating pump according to claim 1, characterized in that, The rotor shaft passes through the upper end cover and the lower end cover and is supported by the upper end cover and the lower end cover.

11. The circulating pump according to claim 1, characterized in that, The portion of the rotor shaft located at the connection point between the motor chamber and the pump head chamber is also fitted with an intermediate shaft sleeve.

12. The circulating pump according to claim 1, characterized in that, The outer shell is integrally molded.

13. A liquid cooling system, characterized in that, include: A pump module comprising a circulating pump as described in any one of claims 1 to 12 and a coolant reservoir, the coolant reservoir having a liquid outlet and a liquid return outlet, the circulating pump being used to circulate the fluid medium in the coolant reservoir between the pump module and the liquid-cooled charging pile; A heat dissipation module, comprising heat sinks and a cooling fan, is used to dissipate heat from the fluid medium of the pump module.

14. A liquid-cooled charging pile, characterized in that, include: The charging pile body, the liquid-cooled gun line, and the liquid cooling system as described in claim 13, wherein the liquid output interface of the liquid cooling system is connected to the liquid input port of the liquid-cooled gun line, and the liquid return interface of the liquid cooling system is connected to the liquid output port of the liquid-cooled gun line.

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