Electromagnetic valve, thermal management system and electric device

Abstract

The utility model provides an electromagnetic valve, a thermal management system and an electric device. The electromagnetic valve comprises a valve seat, a valve body and a clamp spring, the valve seat comprises a first mounting hole, the valve body comprises a main body part and a connecting part, and the main body part is mounted in the first mounting hole; the main body part comprises a first end face and a second end face, and the connecting part is connected to the first end face and extends out of the valve seat from the first mounting hole; a clamping groove is formed in the hole wall of the first mounting hole, and the clamping spring is clamped in the clamping groove; the projection of the main body part and the projection of the snap spring at least partially coincide in the direction parallel to the axis of the first mounting hole. According to the electromagnetic valve, the mode that a valve body and a valve seat are connected in a threaded mode in the prior art is abandoned, the valve body and the valve seat are fixedly connected in the mode that the main body part is limited and fixed through the clamping spring, metal scraps cannot be generated in the connecting process, the cleanliness of a flow channel cannot be affected, the flow channel is not prone to being blocked, and the service life of the valve body is prolonged. Therefore, the use reliability of the electromagnetic valve is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve structure design, in particular to an electromagnetic valve, a thermal management system and an electrical device. Background Art

[0002] Various types of solenoid valves are often used in thermal management systems to control and adjust fluid media. Common solenoid valves include a valve seat, a valve body, a valve core and a driving mechanism. A flow channel structure is provided in the valve seat, the valve core is installed in the valve body, and the valve body is installed in the valve seat. The driving mechanism drives the valve core to move in the valve body, so that different flow channels are connected or disconnected with each other, thereby realizing the conduction or cutoff of the fluid medium.

[0003] In the prior art, the valve seat and the valve body are usually installed by threaded connection. During the installation process, the mutual squeezing of the screw threads and the friction with the valve seat and the valve body will cause metal debris to be generated between the valve seat and the valve body. The metal debris will affect the cleanliness of the flow channel and easily cause poor circulation of the fluid medium in the flow channel, thereby affecting the function and service life of the entire thermal management system. Utility Model Content

[0004] In view of this, the utility model provides a solenoid valve, a thermal management system and an electrical device, so as to at least solve the problem in the prior art that the solenoid valve adopts threaded connection, which easily affects the cleanliness of the flow channel.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] The utility model provides a solenoid valve, comprising a valve seat, a valve body and a retaining spring;

[0007] The valve seat comprises a first mounting hole, the valve body comprises a main body and a connecting part, and the main body is mounted in the first mounting hole;

[0008] The main body comprises a first end face and a second end face, the first end face and the second end face are arranged opposite to each other in a direction parallel to the axis of the first mounting hole, the connecting portion is connected to the first end face and extends out of the valve seat from the first mounting hole; a clamping groove is arranged on the hole wall of the first mounting hole, and the clamping spring is clamped in the clamping groove;

[0009] Along a direction parallel to the axis of the first mounting hole, a projection of the main body at least partially overlaps with a projection of the retaining spring.

[0010] Optionally, the first end surface abuts against the retaining spring.

[0011] Optionally, the valve seat further comprises a second mounting hole, the second mounting hole is coaxially arranged with the first mounting hole, and the second mounting hole is interconnected to form a stepped hole;

[0012] Along a direction parallel to the axis of the first mounting hole, the projection of the second mounting hole is located within the projection of the first mounting hole, and a transition surface is formed at a portion where the first mounting hole and the second mounting hole meet;

[0013] The second end surface abuts against the transition surface.

[0014] Optionally, an elastic gasket is also included;

[0015] The elastic gasket is arranged between the second end surface and the transition surface, and abuts against the second end surface and the transition surface respectively.

[0016] Optionally, the elastic gasket is a corrugated gasket.

[0017] Optionally, a valve nozzle is also included;

[0018] The valve nozzle has a shaft shoulder, which is arranged between the second end surface and the transition surface and abuts against the second end surface and the transition surface respectively;

[0019] The main body has a valve cavity, and the shaft shoulder separates the valve mouth into a first part and a second part. The first part is inserted into the valve cavity and fixedly connected to the main body, and the second part is installed in the second installation hole.

[0020] Optionally, a plurality of grooves are formed on the inner side of the clamping spring.

[0021] Optionally, it also includes a first sealing ring;

[0022] The outer wall of the main body is provided with a first installation groove, and the first installation groove is used for installing the first sealing ring.

[0023] Optionally, a second sealing ring is also included;

[0024] A second installation groove is formed on the outer wall of the second part of the valve nozzle, and the second installation groove is used for installing the second sealing ring.

[0025] Optionally, it also includes a driving mechanism and a valve core;

[0026] The valve core is arranged in the valve cavity, and the driving mechanism is connected to the valve core and is used to drive the valve core to move in the valve cavity toward or away from the valve mouth, so that the valve core opens or closes the valve mouth;

[0027] When the valve mouth is opened, the medium flows through the solenoid valve, and when the valve mouth is closed, the medium does not flow through the solenoid valve.

[0028] Optionally, a reset member is also included;

[0029] The reset member is arranged between the valve core and the valve nozzle, and is fixedly connected to the valve core and the valve nozzle respectively.

[0030] The utility model also provides a thermal management system, comprising any one of the aforementioned solenoid valves.

[0031] The utility model also provides an electrical device, comprising the above-mentioned thermal management system.

[0032] Compared with the prior art, the solenoid valve, thermal management system and electrical device described in the utility model have the following advantages:

[0033] The solenoid valve of the utility model abandons the method of using threaded connection between the valve body and the valve seat in the prior art, and directly adopts the method of limiting and fixing the main body of the valve body with a retaining spring to achieve a fixed connection between the valve body and the valve seat. No metal debris will be generated during the connection process, and the cleanliness of the flow channel will not be affected. The flow channel is not easily blocked, which helps to achieve smooth flow of the fluid medium in the flow channel, thereby ensuring the reliability of the solenoid valve.

[0034] The thermal management system and the electrical device of the present invention have the same or similar advantages as the prior art and the aforementioned solenoid valve, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0036] Figure 1 It is a cross-sectional view of a solenoid valve in an embodiment of the utility model;

[0037] Figure 2 This is an exploded view of the structure of a solenoid valve in an embodiment of the utility model;

[0038] Figure 3 It is a cross-sectional view of a valve seat in an embodiment of the utility model;

[0039] Figure 4 It is a schematic diagram of a retaining spring in an embodiment of the utility model;

[0040] Figure 5 It is a schematic diagram of an elastic gasket in an embodiment of the utility model;

[0041] Figure 6 It is a cross-sectional view of a valve nozzle in an embodiment of the utility model.

[0042] Description of reference numerals:

[0043] 1-valve seat, 11-first mounting hole, 12-second mounting hole, 13-flow channel, 14-transition surface, 2-valve body, 20-through hole, 21-main body, 22-connecting part, 210-first mounting groove, 211-first end face, 212-second end face, 3-circlip, 30-groove, 4-elastic gasket, 5-valve mouth, 50-shaft shoulder, 51-first part, 52-second part, 520-second mounting groove, 61-first sealing ring, 62-second sealing ring, 7-valve core, 81-coil assembly, 82-iron core, 83-iron core cover, 84-push rod, 9-reset member. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the utility model can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0046] It should be understood that the reference to "some embodiments" throughout the specification means that specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the utility model. Therefore, the "in some embodiments" appearing in various places throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0047] The following describes in detail a solenoid valve, a thermal management system and an electrical device provided by the utility model by listing specific embodiments.

[0048] Reference Figures 1 to 3The utility model provides a solenoid valve, including a valve seat 1, a valve body 2 and a retaining spring 3; the valve seat 1 includes a first mounting hole 11, the valve body 2 includes a main body 21 and a connecting portion 22, the main body 21 is installed in the first mounting hole 11; the main body 21 includes a first end face 211 and a second end face 212, the first end face 211 and the second end face 212 are arranged opposite to each other in a direction parallel to the axis of the first mounting hole 11, the connecting portion 22 is connected to the first end face 211 and extends from the first mounting hole 11 to the outside of the valve seat 1; the hole wall of the first mounting hole 11 is provided with a clamping groove, and the retaining spring 3 is clamped in the clamping groove; along the direction parallel to the axis of the first mounting hole 11, the projection of the main body 21 and the projection of the retaining spring 3 at least partially overlap.

[0049] Specifically, the solenoid valve of the utility model can be applied to a thermal management system to realize the direction control, flow control, flow rate control, etc. of the fluid medium in the thermal management system, so that the thermal management system can be adjusted according to different scene requirements. Figures 1 to 3 As shown, the solenoid valve includes a valve seat 1, a valve body 2 and a retaining spring 3, etc. The valve seat 1 is a rigid seat body, and a plurality of flow channels 13 are provided in the valve seat 1. The flow channels 13 are used to circulate fluid medium, and the fluid medium can be pure water, coolant, oil or other chemical mixed solutions, etc., and the medium type is not limited in this embodiment. A first mounting hole 11 is also provided in the valve seat 1, and the valve body 2 includes a main body 21 and a connecting part 22. In a direction perpendicular to the axis of the first mounting hole 11, the size of the main body 21 is larger than the size of the connecting part 22. The main body 21 and the connecting part 22 can be any form such as a cylindrical structure, a prismatic structure, a square column structure, etc., and this is not limited in this embodiment. The main body 21 is completely installed in the first mounting hole 11, and the main body 21 includes a first end face 211 and a second end face 212. The first end face 211 and the second end face 212 are arranged opposite to each other in a direction parallel to the axis of the first mounting hole 11, and the connecting part 22 is connected to the first end face 211 and extends out of the valve seat 1 from the first mounting hole 11. The valve body 2 may be an integral structure formed by an integral molding process, that is, the main body 21 and the connecting portion 22 are an integral structure, and the valve body 2 may be a split structure formed by an assembly process, that is, the main body 21 and the connecting portion 22 are independent structures respectively, and are assembled and connected together by fasteners to form the valve body 2. The main body 21 has a valve cavity and is provided with a through hole 20, and the through hole 20 connects the valve cavity with the flow channel 13, and the fluid medium in the flow channel 13 can flow from the through hole 20 into the valve cavity, and then flow out from different flow channels 13, thereby realizing the change of the flow direction of the fluid medium.

[0050] The hole wall of the first mounting hole 11 is provided with a slot, and the retaining spring 3 is retained in the slot. In the direction parallel to the axis of the first mounting hole 11, the projection of the main body 21 and the projection of the retaining spring 3 at least partially overlap, which is equivalent to the size of the inner circle of the retaining spring 3 being smaller than the size of the main body 21 in the direction perpendicular to the axis of the first mounting hole 11, so that the retaining spring 3 can limit the main body 21 to prevent the main body 21 from slipping out of the first mounting hole 11, thereby achieving a fixed connection between the valve body 2 and the valve seat 1. In the actual installation process, the main body 21 of the valve body 2 needs to be inserted into the first mounting hole 11 of the valve seat 1 first, and then the retaining spring 3 is retained in the slot to achieve relative fixation of the valve body 2 in the first mounting hole 11.

[0051] The solenoid valve of the utility model abandons the threaded connection method of the valve body 2 and the valve seat 1 in the prior art, and directly adopts the retaining spring 3 to limit and fix the main body 21 of the valve body 2 to achieve the fixed connection between the valve body 2 and the valve seat 1. No metal debris will be generated during the connection process, and the cleanliness of the flow channel 13 will not be affected. The flow channel 13 is not easily blocked, which helps to achieve smooth flow of the fluid medium in the flow channel 13, thereby ensuring the reliability of the solenoid valve.

[0052] Optionally, refer to Figure 1 , the first end surface 211 abuts against the retaining spring 3 .

[0053] Specifically, in some embodiments, the clamping spring 3 can be arranged at the end of the main body 21 on the valve body 2, and abut against the first end surface 211 of the main body 21, so that the clamping spring 3 presses and fixes the main body 21 in the first mounting hole 11, restricting the main body 21 from moving upward in a direction parallel to the axis of the first mounting hole, thereby further improving the stability of the main body 21 in the first mounting hole 11 and improving the connection reliability between the valve body 2 and the valve seat 1. In order to ensure that the clamping spring 3 can smoothly press and fix the main body 21 in the first mounting hole 11, the position of the card slot needs to be reasonably set during design to avoid the situation where the clamping spring 3 cannot contact the first end surface 211 of the main body 21, thereby causing the connection between the valve body 2 and the valve seat 1 to loosen, affecting the control accuracy of the solenoid valve for the fluid medium.

[0054] Optionally, refer to Figure 1 and Figure 3 The valve seat 1 also includes a second mounting hole 12, which is coaxially arranged with the first mounting hole 11 and connected to each other to form a stepped hole; along a direction parallel to the axis of the first mounting hole 11, the projection of the second mounting hole 12 is located within the projection of the first mounting hole 11, and the portion where the first mounting hole 11 and the second mounting hole 12 are connected forms a transition surface 14; the second end surface 212 abuts against the transition surface 14.

[0055] Specifically, if Figure 3 As shown, the valve seat 1 also includes a second mounting hole 12, which is coaxially arranged with the first mounting hole 11 and connected to each other to form a stepped hole. Along the direction parallel to the axis of the first mounting hole 11, the projection of the second mounting hole 12 is located within the projection of the first mounting hole 11, and the portion where the first mounting hole 11 and the second mounting hole 12 meet forms a transition surface 14. It should be noted that the first mounting hole 11 and the second mounting hole 12 can be any shape such as a circular hole, a square hole, a rectangular hole, etc., and this embodiment does not limit this. The second end face 212 of the main body 21 abuts against the transition surface 14, and the transition surface 14 supports the main body 21, restricting the main body 21 from moving downward in the direction parallel to the axis of the first mounting hole, thereby further improving the stability of the main body 21 in the first mounting hole 11 and improving the connection reliability between the valve body 2 and the valve seat 1.

[0056] Optionally, refer to Figures 1 to 3 The solenoid valve further includes an elastic gasket 4; the elastic gasket 4 is disposed between the second end surface 212 and the transition surface 14, and abuts against the second end surface 212 and the transition surface 14 respectively.

[0057] Specifically, the elastic gasket 4 has a certain elastic deformation ability. It is arranged between the second end face 212 of the main body 21 on the valve body 2 and the transition surface 14, and abuts against the second end face 212 and the transition surface 14 respectively. The elastic gasket 4 can play an elastic buffering role in the process of installing the main body 21 into the first mounting hole 11, avoiding a hard collision between the second end face 212 of the main body 21 and the transition surface 14, causing damage to the main body 21. When the retaining spring 3 abuts against the first end face 211 of the main body 21 on the valve body 2, the provision of the elastic gasket 4 can allow a certain error between the distance from the slot to the transition face 14 and the axial dimension of the main body 21. After the retaining spring 3 is installed in the slot, the retaining spring 3 squeezes the first end face 211 of the main body 21, and the main body 21 squeezes the elastic gasket 4. The compression of the elastic gasket 4 will provide a pre-tightening force in the opposite direction of the extrusion force to the second end face 212 of the main body 21. Under the combined effect of the pre-tightening force of the elastic gasket 4 acting on the second end face 212 and the extrusion force of the retaining spring 3 acting on the first end face 211, the main body 21 will be reliably fixed in the first mounting hole 11.

[0058] Optionally, refer to Figure 5 , the elastic gasket 4 is a corrugated gasket.

[0059] Specifically, if Figure 5As shown, the corrugated gasket is a circular thin sheet with a regular wavy distribution, and has good elasticity and impact resistance. The elastic gasket 4 adopts a corrugated gasket, which can provide a large pre-tightening force for the main body 21 of the valve body 2 to prevent the connection between the main body 21 and the valve seat 1 from loosening, thereby ensuring the reliability of the connection between the valve body 2 and the valve seat 1.

[0060] Optionally, refer to Figures 1 to 3 as well as Figure 6 The solenoid valve also includes a valve nozzle 5; the valve nozzle 5 has a shaft shoulder 50, and the shaft shoulder 50 is arranged between the second end face 212 and the transition face 14, and respectively abuts against the second end face 212 and the transition face 14; the main body 21 of the valve body 2 has a valve cavity, and the shaft shoulder 50 separates the valve nozzle 5 into a first part 51 and a second part 52, the first part 51 is penetrated into the valve cavity, and is fixedly connected to the main body 21, and the second part 52 is installed in the second mounting hole 12.

[0061] Specifically, the valve nozzle 5 is an outlet for the fluid medium to flow out. Figure 1 and 6 As shown, the valve nozzle 5 has a shoulder 50. The shoulder 50 refers to the part where the cross-sectional size of the stepped shaft changes, and usually includes a positioning shoulder and a transition shoulder. The positioning shoulder plays a positioning role during the installation of the parts, and the transition shoulder is a process shoulder set to facilitate the disassembly and assembly of the parts on the shaft or to avoid stress concentration. In this embodiment, the shoulder 50 of the valve nozzle 5 is a positioning shoulder, and the diameter of the shoulder 50 is relatively large. Figure 1 As shown, the shaft shoulder 50 is disposed between the second end face 212 of the main body 21 of the valve body 2 and the transition face 14, and respectively abuts against the second end face 212 and the transition face 14, so that the shaft shoulder 50 plays a positioning role in the installation of the valve mouth 5. In the case where an elastic gasket 4 is also disposed between the second end face 212 of the main body 21 of the valve body 2 and the transition face 14, the shaft shoulder 50 is clamped between the second end face 212 and the elastic gasket 4, and respectively abuts against the second end face 212 and the elastic gasket 4, and also plays a positioning role in the installation of the valve mouth 5.

[0062] The main body 21 of the valve body 2 has a valve cavity, and the shoulder 50 separates the valve mouth 5 into a first part 51 and a second part 52. The first part 51 is inserted into the valve cavity of the valve body 2 and is fixedly connected to the main body 21, thereby realizing a fixed connection between the valve mouth 5 and the valve body 2. The fluid medium in the valve cavity can flow into the valve mouth 5 and then flow out through the valve mouth 5. The second part 52 of the valve mouth 5 is installed in the second mounting hole 12 and is fixedly connected to the second mounting hole 12. Among them, the connection between the first part 51 of the valve mouth 5 and the main body 21 can be achieved by welding or interference fitting to ensure the reliability of the connection between the valve mouth 5 and the valve body 2 and avoid leakage of the fluid medium. The connection between the second part 52 of the valve mouth 5 and the second mounting hole 12 can be achieved by interference fitting to avoid the valve mouth 5 shaking in the second mounting hole 12, which affects the reliability of the solenoid valve.

[0063] Optionally, refer to Figure 4 A plurality of grooves 30 are formed on the inner side of the clamping ring 3 .

[0064] Specifically, if Figure 4 As shown, a plurality of grooves 30 are provided on the inner side of the retaining spring 3, and the plurality of grooves 30 are evenly arranged along the circumference of the retaining groove. The presence of the plurality of grooves 30 can reduce the rigidity of the retaining spring 3, enhance the elastic force of the retaining spring 3, facilitate the installation and disassembly of the retaining spring 3, and prevent the retaining spring 3 from being damaged during the installation process, thereby extending the service life of the retaining spring 3.

[0065] Optionally, refer to Figure 1 and Figure 2 The solenoid valve further includes a first sealing ring 61 ; a first mounting groove 210 is formed on the outer wall of the main body 21 , and the first mounting groove 210 is used for mounting the first sealing ring 61 .

[0066] Specifically, if Figure 2 As shown, the solenoid valve further includes a first sealing ring 61, which can be made of materials such as silicone, rubber, and resin, and has good sealing performance. Figure 2 As shown, a first mounting groove 210 is formed on the outer wall of the main body 21 of the valve body 2, and a first sealing ring 61 is installed in the first mounting groove 210 to prevent the fluid medium in the valve cavity from leaking out, thereby ensuring the reliability of the solenoid valve.

[0067] Optionally, refer to Figure 1 , Figure 2 and Figure 6 The solenoid valve further includes a second sealing ring 62 ; a second mounting groove 520 is formed on the outer wall of the second portion 52 of the valve mouth 5 , and the second mounting groove 520 is used to install the second sealing ring 62 .

[0068] Specifically, if Figure 2As shown, the solenoid valve also includes a second sealing ring 62, which can also be made of materials such as silicone, rubber, and resin, and has good sealing performance. Figure 6 As shown, the outer wall of the second part 52 of the valve nozzle 5 is provided with a second installation groove 520, and the second sealing ring 62 is installed in the second installation groove 520, which can prevent the fluid medium in the valve nozzle 5 from leaking out, and further ensure the reliability of the solenoid valve.

[0069] Optionally, refer to Figure 1 and Figure 2 The solenoid valve also includes a driving mechanism and a valve core 7; the valve core 7 is arranged in the valve cavity, and the driving mechanism is connected to the valve core 7, and is used to drive the valve core 7 to move in the valve cavity toward or away from the valve mouth 5, so that the valve core 7 opens or closes the valve mouth 5; when the valve mouth 5 is open, the solenoid valve flows the medium, and when the valve mouth 5 is closed, the solenoid valve does not flow the medium.

[0070] Specifically, if Figure 1 and Figure 2 As shown, the valve core 7 is arranged in the valve cavity, and the valve core 7 can move in the valve cavity. The driving mechanism includes a coil assembly 81, an iron core 82, an iron core cover 83, a push rod 84, etc. The iron core 82 is arranged in the iron core cover 83, and the coil assembly 81 is arranged around the iron core cover 83. The connecting part 22 of the valve body 2 has a mounting hole, and the push rod 84 is passed through the mounting hole and extends to the valve cavity of the main body 21 to abut against the valve core 7. After the coil assembly 81 is energized, it can drive the iron core 82 to move along its axial direction. During the movement of the iron core 82, the push rod 84 will be pushed to move synchronously. The push rod 84 pushes the valve core 7 to move in the valve cavity, so that the valve core 7 moves in the valve cavity toward or away from the valve mouth 5, thereby causing the valve core 7 to open or close the valve mouth 5. The valve core 7 opens the valve mouth 5, which means that there is a certain gap between the valve core 7 and the valve mouth 5, and the fluid medium can flow from the valve cavity to the valve mouth 5. The valve core 7 closes the valve mouth 5, which means that the valve core 7 blocks the valve mouth 5, and there is no gap between the valve core 7 and the valve mouth 5, so that the fluid medium cannot flow from the valve cavity to the valve mouth 5. When the valve mouth 5 is open, the solenoid valve flows the medium, and when the valve mouth 5 is closed, the solenoid valve does not flow the medium.

[0071] In some embodiments, the solenoid valve is a normally open solenoid valve. When the power is off, the valve mouth 5 of the normally open solenoid valve is in an open state, and the fluid medium flows. That is, when the coil assembly 81 is not powered, there is a certain gap between the valve core 7 and the valve mouth 5, and the medium can flow from the valve cavity of the valve body 2 to the valve mouth 5. When the coil assembly is powered, the coil assembly 81 drives the iron core 82 to move and push the push rod 84, so that the push rod 84 pushes the valve core 7 to move in the direction close to the valve mouth 5 until the valve core 7 contacts and blocks the valve mouth 5. At this time, there is no gap between the valve core 7 and the valve mouth 5, and the fluid medium cannot flow from the valve cavity to the valve mouth 5. In other embodiments, the solenoid valve is a normally closed solenoid valve. When the power is off, the valve mouth 5 of the normally closed solenoid valve is in a closed state, and the fluid medium does not flow. That is, when the coil assembly 81 is not powered, there is no gap between the valve core 7 and the valve mouth 5, and the medium cannot flow from the valve cavity of the valve body 2 to the valve mouth 5. When the coil assembly is powered on, the coil assembly 81 drives the iron core 82 to move and push the push rod 84, so that the push rod 84 pushes the valve core 7 to move away from the valve mouth 5, so that there is a certain gap between the valve core 7 and the valve mouth 5, and the fluid medium can flow from the valve cavity to the valve mouth 5. In the above embodiment, the direction of the current flowing in the coil assembly 81 can be adjusted to change the direction in which the coil assembly 81 drives the iron core 82 to move.

[0072] Optionally, refer to Figure 1 and Figure 2 The solenoid valve further includes a reset member 9; the reset member 9 is disposed between the valve core 7 and the valve nozzle 5, and is fixedly connected to the valve core 7 and the valve nozzle 5 respectively.

[0073] Specifically, the reset member 9 is disposed between the valve core 7 and the valve mouth 5, and is fixedly connected to the valve core 7 and the valve mouth 5, respectively. The reset member 9 has elastic deformation capability. After the driving mechanism drives the valve core 7 to move, the reset member 9 can drive the valve core 7 to return to the initial position through its own elastic restoring force, so that the valve core 7 remains in this state. For example, if the solenoid valve is a normally open solenoid valve, the coil assembly 81 drives the valve core 7 to move toward the valve mouth 5 after being energized, so that the valve core 7 closes the valve mouth 5. Then, after the coil assembly 81 is powered off, the reset member 9 drives the valve core 7 to move away from the valve mouth 5 through its own elastic restoring force, so that the valve core 7 opens the valve mouth 5, that is, the valve mouth 5 remains in the normally open state even in the power-off state. If the solenoid valve is a normally closed solenoid valve, the coil assembly 81 drives the valve core 7 to move away from the valve mouth 5 after being energized, so that the valve core 7 opens the valve mouth 5. Then, after the coil assembly 81 is de-energized, the reset member 9 drives the valve core 7 to move toward the valve mouth 5 through its own elastic restoring force, so that the valve core 7 closes the valve mouth 5, that is, the valve mouth 5 remains in the normally closed state even in the de-energized state. Figure 1 and Figure 2As shown, the reset member 9 of the present embodiment can be a spring, which is sleeved on the outer wall of the valve core 7. One end of the spring is fixedly connected to the valve core 7, and the other end is fixedly connected to the valve mouth 5. If the solenoid valve is a normally open solenoid valve, the spring can be a compression spring. When the compression spring is not subjected to axial pressure, there is a fixed gap between the coils of the compression spring. When subjected to axial pressure, the spring contracts and deforms to store deformation energy. If the solenoid valve is a normally closed solenoid valve, the spring can be a tension spring. When the tension spring is not subjected to axial tension, the coils of the tension spring are usually in a state of being tightly closed and without gaps. When subjected to axial tension, the spring stretches and deforms to store deformation energy.

[0074] The utility model also provides a thermal management system, comprising the solenoid valve described in any one of the above items.

[0075] Specifically, the thermal management system can be applied to a variety of equipment such as new energy vehicles, fuel vehicles, air conditioners, battery energy storage devices, etc. The thermal management system includes the solenoid valve in the aforementioned embodiment and related components such as motors, water pumps, temperature sensors, and heat exchangers. The solenoid valve uses a retaining spring 3 to limit and fix the main body 21 of the valve body 2 to achieve a fixed connection between the valve body 2 and the valve seat 1. No metal debris will be generated during the connection process, thereby ensuring the cleanliness of the flow channel 13 and the smooth flow of the fluid medium, thereby ensuring the stability and reliability of the thermal management system.

[0076] The utility model also provides an electrical device, comprising the above-mentioned thermal management system.

[0077] Specifically, the power-consuming device can be a variety of different types of equipment such as vehicles, charging stations, energy storage cabinets, etc. The thermal management system can be applied to the vehicle's air conditioning system, cabin system, engine system, cooling system, etc. The charging station includes multiple power battery packs, charging guns, transformers, etc. Electric vehicles can be charged at the charging station, or the power battery pack can be replaced, etc., to extend the vehicle's endurance. The application of the battery management system of the above-mentioned embodiment to the power-consuming device helps to ensure the normal operation of the power-consuming device.

[0078] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve, characterized in that: Including valve seat, valve body and retaining ring; The valve seat comprises a first mounting hole, the valve body comprises a main body and a connecting part, and the main body is mounted in the first mounting hole; The main body comprises a first end face and a second end face, the first end face and the second end face are arranged opposite to each other in a direction parallel to the axis of the first mounting hole, the connecting portion is connected to the first end face and extends out of the valve seat from the first mounting hole; a clamping groove is arranged on the hole wall of the first mounting hole, and the clamping spring is clamped in the clamping groove; Along a direction parallel to the axis of the first mounting hole, a projection of the main body at least partially overlaps with a projection of the retaining spring.

2. The solenoid valve according to claim 1, characterized in that: The first end surface abuts against the clamping spring.

3. The solenoid valve according to claim 1, characterized in that: The valve seat further comprises a second mounting hole, which is coaxially arranged with the first mounting hole and is interconnected to form a stepped hole; Along a direction parallel to the axis of the first mounting hole, the projection of the second mounting hole is located within the projection of the first mounting hole, and a transition surface is formed at a portion where the first mounting hole and the second mounting hole meet; The second end surface abuts against the transition surface.

4. The solenoid valve according to claim 3, characterized in that: Also included are elastic gaskets; The elastic gasket is arranged between the second end surface and the transition surface, and abuts against the second end surface and the transition surface respectively.

5. The solenoid valve according to claim 4, characterized in that: The elastic gasket is a corrugated gasket.

6. The solenoid valve according to claim 3, characterized in that: Also includes a valve nozzle; The valve nozzle has a shaft shoulder, which is arranged between the second end surface and the transition surface and abuts against the second end surface and the transition surface respectively; The main body has a valve cavity, and the shaft shoulder separates the valve mouth into a first part and a second part. The first part is inserted into the valve cavity and fixedly connected to the main body, and the second part is installed in the second installation hole.

7. The solenoid valve according to claim 1, characterized in that: A plurality of grooves are formed on the inner side of the clamping spring.

8. The solenoid valve according to claim 1, characterized in that: Also includes a first sealing ring; The outer wall of the main body is provided with a first installation groove, and the first installation groove is used for installing the first sealing ring.

9. The solenoid valve according to claim 6, characterized in that: Also comprising a second sealing ring; A second installation groove is formed on the outer wall of the second part of the valve nozzle, and the second installation groove is used for installing the second sealing ring.

10. The solenoid valve according to claim 6, characterized in that: Also includes a drive mechanism and a valve core; The valve core is arranged in the valve cavity, and the driving mechanism is connected to the valve core and is used to drive the valve core to move in the valve cavity toward or away from the valve mouth, so that the valve core opens or closes the valve mouth; When the valve mouth is opened, the medium flows through the solenoid valve, and when the valve mouth is closed, the medium does not flow through the solenoid valve.

11. The solenoid valve according to claim 10, characterized in that: Also includes a reset member; The reset member is arranged between the valve core and the valve nozzle, and is fixedly connected to the valve core and the valve nozzle respectively.

12. A thermal management system, characterized in that: A solenoid valve comprising any one of claims 1 to 11.

13. An electrical device, characterized in that: Includes the thermal management system as claimed in claim 12.

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