CN218954104U

CN218954104U - Integrated cooling liquid path switching valve and thermal management system with same

Info

Publication number: CN218954104U
Application number: CN202223176135.2U
Authority: CN
Inventors: 汪澎; 过于成; 尹彦斌
Original assignee: United Automotive Electronic Systems Co Ltd
Current assignee: United Automotive Electronic Systems Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-02
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses an integrated cooling liquid path switching valve, wherein a valve body of the switching valve comprises a valve seat and a valve core, a plurality of flow passages are formed between the valve core and the valve seat, the valve core rotates to different positions in the valve seat to conduct different flow passages, so that the switching valve is communicated with different external loops, the valve core is divided into an upper valve core and a lower valve core, the lower valve core rotates relative to the valve seat under the drive of the upper valve core, and the upper valve core can rotate relative to the lower valve core; a plurality of side ports are formed on the circumferential surface of the valve seat, and a bottom port is formed on the end surface of the valve seat, which is close to the lower-layer valve core; the lower-layer valve core is provided with a bottom joint at a position corresponding to the bottom port, and the upper-layer valve core and the lower-layer valve core are both provided with side openings and a middle runner communicated with each other. The utility model can simplify the pipeline configuration, reduce the number of valves, reduce the volume of the device and reduce the cost.

Description

Integrated cooling liquid path switching valve and thermal management system with same

Technical Field

The utility model relates to the field of valves, in particular to an integrated cooling liquid path switching valve and a thermal management system with the switching valve.

Background

The engine thermal management system ensures that the engine is at the optimal temperature during the working cycle, so that the engine works at the optimal temperature, and the fuel-saving performance is the most, the performance is the most stable, and the efficiency can be the most exerted, so that the thermal management technology plays a great role in improving the performance of the whole vehicle. With the development of computer technology and engine electric control technology, the heat management system adopts components such as an electronically driven and controlled water pump, a fan, a thermostat and the like, and operates according to actual engine temperature control through a sensor and a computer chip to provide optimal coolant flow, so that the control intellectualization of an engine cooling system is realized, the energy consumption is reduced, and the efficiency is improved. Among these, the water pump and its valve structure are one of the important influencing factors.

The valve is a control component in the fluid conveying system and can be used for controlling the on-off state, the flow direction and the like of the fluid. For example, in thermal management systems for new energy vehicles, it is often necessary to use valves to control the flow of coolant. Currently, thermal management systems for automobiles typically include multiple cooling circuits (e.g., battery cooling circuits and electric drive system cooling circuits) and multiple heat exchangers. In practical operation, the thermal management system needs to integrate a plurality of cooling circuits and a plurality of heat exchangers, and therefore, a plurality of valves are needed to realize the transfer of cooling liquid between the plurality of cooling circuits and/or the plurality of heat exchangers, so that different working modes are realized.

The following describes an example of the coolant topology shown in fig. 1. The cooling liquid distribution system of the existing electric vehicle is generally composed of one or a plurality of four-way valves or three-way valves. As shown in fig. 1, the coolant distribution system comprises a first circuit for the first element 3 and a second circuit for the second element 4, both circuits being required to perform the function of circulating separately and in series, which requires switching by means of a four-way valve 7. The first loop comprises a first pump 1 and a first element 3 which are connected in series, two ends of the first loop are respectively communicated with two ports of a four-way valve 7, and the second loop comprises a second pump 2 and a second element 4 which are connected in series, and two ends of the second loop are respectively communicated with the other two ports of the four-way valve 7. In addition, in the first circuit, it is also necessary to realize a selective series connection of a first heat exchanger 5, which is accomplished by a three-way valve (three-way valve 8). In the second circuit, a second heat exchanger 6 is then connected in series in proportion, which usually also requires a proportional three-way valve (three-way valve No. 9) to accomplish.

If the three-way valve No. two 9 is not considered in the intermediate state of the scaling, then eight modes of implementation of the coolant topology shown in fig. 1 are shown in fig. 2a to 2 h. If the three-way valve 9 is considered to be in an intermediate state of proportional adjustment, the aforementioned architecture also enables four proportional modes, which are respectively interposed between the mode one shown in fig. 2a and the mode two shown in fig. 2b, between the mode three shown in fig. 2c and the mode four shown in fig. 2d, between the mode five shown in fig. 2e and the mode six shown in fig. 2f, and between the mode seven shown in fig. 2g and the mode eight shown in fig. 2 h.

From the foregoing, it can be seen that three valves (one four-way valve, one three-way valve, and one proportional three-way valve) are required for the topology that satisfies the above functional requirements. It is easy to see that the number of valves in the topological structure is relatively large, which inevitably leads to the large volume and high cost of the whole pipeline switching device.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an integrated cooling liquid path switching valve and a heat management system with the switching valve, which can solve the problems of large volume and high cost of a pipeline switching device caused by a plurality of valves in the existing heat management system.

In order to solve the technical problems, the valve body of the integrated cooling liquid path switching valve comprises a valve seat and a valve core, a plurality of flow passages are formed between the valve core and the valve seat, the valve core rotates to different positions in the valve seat to conduct different flow passages, so that the switching valve is communicated with different external loops, the valve core is divided into an upper valve core and a lower valve core, and the lower valve core is driven by the upper valve core to rotate relative to the valve seat and can rotate relative to the lower valve core; a plurality of side ports are formed on the circumferential surface of the valve seat, and a bottom port is formed on the end surface of the valve seat, which is close to the lower-layer valve core; the lower-layer valve core is provided with a bottom joint at a position corresponding to the bottom port, and the upper-layer valve core and the lower-layer valve core are both provided with side openings and a middle runner communicated with each other.

Preferably, the switching valve further comprises an actuator, the actuator is mounted on the end face of the valve seat close to the upper-layer valve core, the upper-layer valve core is driven by the actuator to rotate, and the top of the upper-layer valve core is provided with a connecting shaft connected with the actuator.

Preferably, the valve seat is of an integrated structure, the valve seat is of a cylinder shape with two closed ends, the connecting shaft extends out of the end face of the valve seat close to the top of the upper-layer valve core, and the bottom joint extends out of the end face of the valve seat close to the bottom of the lower-layer valve core.

Preferably, the valve seat is divided into an upper valve seat and a lower valve seat, the upper valve seat is in a cylindrical shape with a closed top and an open bottom, the lower valve seat is in a cylindrical shape with a closed top and an open bottom, the connecting shaft extends from the closed end face of the upper valve seat, the bottom joint extends from the closed end face of the lower valve seat, the upper valve core is rotatably installed in the upper valve seat, and the lower valve core is rotatably installed in the lower valve seat.

Preferably, the valve seat is fixedly installed in a valve housing with two closed ends, the positions of the valve housing corresponding to the side ports and the bottom ports are respectively provided with a connector for connecting an external circuit, the connecting shaft extends out of the top end surface of the valve housing close to the top of the upper-layer valve core, and the bottom connector extends out of the bottom end surface of the valve housing close to the bottom of the lower-layer valve core.

Preferably, the valve seat is an integral cylinder with two open ends, or is divided into an upper valve seat and a lower valve seat with two open ends.

Preferably, an intermittent transmission pin is formed at the top of the lower-layer valve core, and an intermittent transmission groove matched with the intermittent transmission pin is formed on the upper-layer valve core.

Preferably, an upper-layer valve core interlayer opening is formed on the bottom surface of the upper-layer valve core, the upper-layer valve core interlayer opening is communicated with the side opening of the upper-layer valve core, two side openings in the lower-layer valve core are communicated and are communicated with a bottom joint of the lower-layer valve core, a lower-layer valve core interlayer opening is formed on the top surface of the lower-layer valve core, and the lower-layer valve core interlayer opening is communicated with the upper-layer valve core interlayer opening to form the middle runner.

Preferably, in different working modes, the openings on different sides of the upper layer valve core and the lower layer valve core are communicated with the ports on different sides of the valve seat to form at least two flow passages, and one flow passage is communicated with a bottom joint in the lower layer valve core.

Preferably, each flow channel is connected to a different external circuit, and the external circuits are independently operated by the switching valves.

Preferably, each flow channel is connected to a different external circuit, wherein at least two external circuits are operated in series by the switching valve.

Preferably, the switching valve is a six-way valve, the valve seat is provided with two side ports on the outer circumferential surface of the upper-layer valve core, three side ports on the outer circumferential surface of the lower-layer valve core, and a bottom port is formed on the end surface close to the lower-layer valve core;

the periphery of the upper valve core is provided with three side openings, the end surface close to the lower valve core is provided with an upper valve core interlayer opening, the three side openings are communicated to form a Y-shaped flow channel, and the upper valve core interlayer opening is communicated with the Y-shaped flow channel;

the periphery of the lower valve core is provided with four side openings, the end face close to the upper valve core is provided with a lower valve core interlayer opening, two side openings are communicated to form a linear flow channel, the other two side openings are communicated to form a C-shaped flow channel, a bottom joint of the lower valve core is communicated with the linear flow channel, and the lower valve core interlayer opening is communicated with the C-shaped channel and is also communicated with the upper valve core interlayer opening.

Preferably, the valve seat is divided into an upper layer valve seat and a lower layer valve seat, the upper layer valve core is positioned in the upper layer valve seat, and the lower layer valve core is positioned in the lower layer valve seat; two side ports are uniformly distributed on the circumferential surface of the upper-layer valve seat, and three side ports are uniformly distributed on the circumferential surface of the lower-layer valve seat;

The three side openings of the upper-layer valve core are uniformly distributed on the circumferential surface, and the four side openings of the lower-layer valve core are sequentially separated by 60 degrees in the clockwise direction.

Preferably, the upper layer valve core is provided with two intermittent transmission grooves penetrating up and down, the intermittent transmission grooves are distributed on two sides of an interlayer opening of the upper layer valve core and are symmetrical about the center of a circle of the upper layer valve core, the top surface of the lower layer valve core is provided with two intermittent transmission pins matched with the intermittent transmission grooves, and the upper layer valve core can rotate for 60 degrees relative to the lower layer valve core in the allowable directions of the intermittent transmission pins and the intermittent transmission grooves.

Meanwhile, the utility model also provides a thermal management system which comprises the integrated cooling liquid path switching valve.

Compared with the prior art, the integrated cooling liquid path switching valve is reasonably provided with the side openings in the upper and lower valve cores and the ports used for communicating the external loop on the valve seat, and can meet multiple functional requirements of a complex cooling liquid topological structure by utilizing one valve by changing the relative positions of the upper valve core, the lower valve core and the valve seat and the relative positions of the upper valve core and the lower valve core, such as free switching of multiple loops, independent running of multiple loops, serial running of multiple loops and the like. The utility model can simplify the complex pipeline configuration in the cooling liquid topological structure and reduce the number of the used valves, thereby ensuring that the cooling liquid pipeline switching device has more compact volume, small occupied space and obviously reduced cost.

Drawings

FIG. 1 is a schematic diagram of a prior art coolant topology;

FIGS. 2 a-2 h are schematic diagrams of eight modes of implementation of the coolant topology shown in FIG. 1;

FIG. 3 is a schematic port diagram of the coolant topology shown in FIG. 1;

FIG. 4 is a schematic diagram of a thermal management system of the present utility model;

FIG. 5 is a schematic perspective view of an integrated cooling fluid circuit switching valve according to an embodiment of the present utility model;

FIG. 6 is a top view of the integrated cooling fluid circuit switching valve of FIG. 5;

FIG. 7 is a side view of the integrated cooling fluid circuit switching valve of FIG. 5;

FIG. 8 is a schematic front perspective view of a valve body in the integrated cooling fluid circuit switching valve of FIG. 5;

FIG. 9 is a schematic rear perspective view of the valve body of FIG. 8;

FIG. 10 is a front view of the valve body of FIG. 8;

FIG. 11 is a side view of the valve body of FIG. 8;

FIG. 12 is a front perspective view of an upper layer spool in the valve body of FIG. 8;

FIG. 13 is a schematic view of the upper spool of FIG. 12 in a back perspective;

FIG. 14 is a perspective cross-sectional view of the upper spool of FIG. 12, with the cross-section shown in gray;

FIG. 15 is a front perspective view of the lower spool in the valve body of FIG. 8;

FIG. 16 is a schematic side perspective view of the lower spool of FIG. 15;

FIG. 17 is a schematic view of the lower spool of FIG. 15 in a back perspective view;

FIG. 18 is a perspective cross-sectional view of the lower spool of FIG. 15, with the cross-section shown in gray;

FIG. 19 is a schematic view of the lower valve element and lower valve seat of FIG. 15 in combination;

FIG. 20 is a state diagram of the valve body of FIG. 8 with the port number one closed and the port number two open;

FIG. 21 is a state diagram of the valve body of FIG. 8 with the first port open and the second port closed;

FIG. 22 is a state diagram of the valve body of FIG. 8 in an intermediate proportional state between port one and port two;

fig. 23a to 30b are schematic flow channels of eight modes of implementation of the coolant topology shown in fig. 2a to 2 h.

Wherein the reference numerals are as follows:

1 is a pump number one; 2 is a pump number two; 3 is a first element; 4 is a second element; 5 is a first heat exchanger; 6 is a second heat exchanger; 7 is a four-way valve; 8 is a first three-way valve; 9 is a second three-way valve; 10 is an integrated cooling liquid path switching valve; 101 is an actuator; 102 is a valve body; 103 is port number one; 104 is port number two; 105 is port number three; 106 is a port number four; 107 is a fifth port; 108 is a sixth port; 109 is the upper valve seat; 103', 104', 105', 106', 107' are side ports; 110 is an upper layer valve core; 111 is a lower valve seat; 112 is the lower valve core; 113 is an intermittent drive slot; 114 is the interlayer opening of the upper valve core; 115 is the upper valve core side opening; 116 is an intermittent drive pin; 117 is the interlayer opening of the lower valve core; 118 is the lower valve core side opening; 119 is the bottom sub.

Detailed Description

The following detailed description of the utility model refers to the accompanying drawings and the detailed description of the utility model, so that the technical scheme and the beneficial effects of the utility model are more clear. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model, for which the dimensions are shown in the drawings for the purpose of clarity only and do not limit the true to scale.

It should be noted that, in the description of the present application, the terms "upper," "lower," "inner," "outer," "top," "bottom," "side," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, unless explicitly stated and limited otherwise, the terms "forming," "mounting," "connecting," and "connecting" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. Also, the terms "first," "second," "first," "second," etc. are used to describe various elements, components, etc., but these elements, components should not be limited by these terms, which are merely used to distinguish them, and thus the first element, component discussed below may also be referred to as a second element, component, without departing from the teachings of embodiments of the present utility model.

First embodiment

The valve body 102 of the switching valve includes a valve seat and a valve core, a plurality of flow passages are formed between the valve core and the valve seat, and the valve core rotates to different positions in the valve seat to conduct different flow passages, so that the switching valve is communicated with different external circuits.

The valve core is divided into an upper layer valve core 110 and a lower layer valve core 112, wherein the lower layer valve core 112 is driven by the upper layer valve core 110 to rotate relative to the valve seat, and the upper layer valve core 110 can rotate relative to the lower layer valve core 112; a plurality of side ports are formed on the circumferential surface of the valve seat, and a bottom port is formed on the end surface of the valve seat, which is close to the lower-layer valve core 112; the lower valve core 112 is formed with a bottom joint at a position corresponding to the bottom port, and the upper valve core 110 and the lower valve core 112 are both formed with side openings and an intermediate flow channel communicated with each other.

In particular, the switching valve further comprises an actuator 101, the actuator 101 is mounted on the end face of the valve body 102 close to the upper-layer valve core 110, and the upper-layer valve core 110 is driven to rotate by the actuator 101. Specifically, the top of the upper valve core 110 has a connection shaft connected to the actuator 101. The actuator 101 may be a motor electrically connected to the control unit, an output shaft of the motor is connected to a connecting shaft of the upper valve core 110, and the motor receives a control signal output by the control unit and acts, so as to drive the upper valve core 110 to rotate relative to the valve seat, and further drive the lower valve core 112 to rotate relative to the valve seat through the upper valve core 110.

In this embodiment, the valve seat is fixedly installed in a valve housing with two closed ends, the valve housing is provided with connectors for connecting an external circuit at positions corresponding to the side ports and the bottom ports, the connecting shaft extends from the top end surface of the valve housing near the top of the upper valve core, and the bottom connector extends from the bottom end surface of the valve housing near the bottom of the lower valve core. In the present embodiment, the valve seat is divided into an upper valve seat 109 and a lower valve seat with both ends open, but the valve seat may be a cylindrical integrated structure with both ends open.

Specifically, as shown in fig. 5 to 18, in the integrated cooling liquid path switching valve of the present embodiment, the valve body 102 includes a valve housing, an upper valve seat 109, an upper valve seat 110, a lower valve seat 111, and a lower valve seat 112, the upper valve seat 110 is rotatably installed in the upper valve seat 109, the lower valve seat 112 is rotatably installed in the lower valve seat 111, the lower valve seat 112 is driven by the upper valve seat 110 to rotate, and the upper valve seat 112 can rotate relative to the lower valve seat 110, and the upper valve seat 109 and the lower valve seat 111 are fixedly installed in the valve housing.

The upper and

lower valve seats

109 and 111 are formed with side ports that are matched at positions corresponding to the side ports, the lower valve spool 112 is formed with a bottom joint 119 at positions corresponding to the bottom ports, the upper and lower valve spools 110 and 112 are each formed with side openings and an intermediate flow passage that communicates therebetween, and the ports on the upper and

lower valve seats

109 and 111 are used to communicate with the side openings in the upper and lower valve spools 110 and 112 so as to allow different external circuits to be conducted and operated.

The upper valve core 110 and the lower valve core 112 rotate to different positions relative to the valve housing so that the switching valve is in different working modes, and at different working modes, the upper valve core 110, the upper valve seat 109, the lower valve core 112 and the lower valve seat 111 form at least two flow passages communicated with different ports, so that the integrated cooling liquid path switching valve can be utilized to replace a plurality of valves in the existing cooling liquid topological architecture, and the communication of different loops of cooling liquid is realized.

Specifically, as shown in fig. 12 and 15, the top of the lower valve core 112 is formed with an intermittent driving pin 116, and the upper valve core 110 is formed with an intermittent driving slot 113 that cooperates with the intermittent driving pin 116, so that an idle rotation stroke between the upper valve core 110 and the lower valve core 112 can be achieved, that is, the upper valve core 110 can rotate itself without driving the lower valve core 112 to rotate, as will be described in detail in fig. 21 and 22.

Specifically, as shown in fig. 13 and 14, the upper valve core 110 of the present embodiment is cylindrical and has a cavity, an upper valve core interlayer opening 114 is formed on the bottom surface of the upper valve core 110, and the upper valve core interlayer opening 114 communicates with a side opening 115 of the upper valve core 110. As shown in fig. 16 and 18, the lower spool 112 is cylindrical, and two side openings 118 in the lower spool 112 are in communication with each other and with a bottom joint 119 of the lower spool 112. As shown in fig. 15, 16 and 18, a lower spool interlayer opening 117 is formed on the top surface of the lower spool 112, and the lower spool interlayer opening 117 and the upper spool interlayer opening 114 are communicated to form the intermediate flow passage, thereby connecting the upper spool 110 and the lower spool 112.

The upper valve seat 109 and the lower valve seat 111 are cylindrical with openings at both ends, the upper valve core 110 and the lower valve core 112 are respectively wrapped in the upper valve core 110, the lower valve core 112, and the central axes of the upper valve seat 109 and the lower valve seat 111 are on the same vertical line.

In different modes of operation, the upper spool 110, the lower spool 112, and the valve seat form at least two flow passages in communication with different ports, with one of the flow passages in communication with a bottom sub 119 in the lower spool. In some working modes, two ends of the flow channel are connected with different external loops to form a plurality of loops which respectively and independently run. In some modes of operation, the two ends of the flow channel are connected to different circuits of the environment, at least two of which are operated in series by the switching valve.

The switching valve structure of the present embodiment will be described in detail below with reference to the coolant topology mentioned in the background art. The two three-way valves and the four-way valve in the coolant topology shown in fig. 1 are numbered near the element or the heat exchanger, respectively, as shown in fig. 3.

The integrated cooling liquid path switching valve 10 in the embodiment of the present utility model replaces three valves (the first three-way valve 8, the second three-way valve 9, and the four-way valve 7) in fig. 3, and the integrated cooling liquid path switching valve 10 is an integrated six-way valve, as shown in fig. 4, and the six-way valve can implement all functions that can be implemented by the three valves in the cooling liquid topology structure shown in fig. 1.

As shown in fig. 5, 6 and 7, the switching valve 10 of the present embodiment includes an actuator 101 and a valve body 102, the valve body 102 is cylindrical, five side ports are distributed on the circumferential surface of a valve housing of the valve body 102, which are a first port 103, a second port 104, a third port 105, a fourth port 106 and a fifth port 107, respectively, and bottom ports, that is, a sixth port 108, are distributed on the bottom surface of the valve housing. The actuator 101 is mounted on the top surface of the valve body 102. The six

aforementioned ports

103, 104, 105, 106, 107, 108 are used for connecting an external circuit, such as a cooling circuit.

The actuator 101 in the switching valve 10 (six-way valve) and the valve housing on the valve body 102 are removed, and the interior of the valve body 102 is divided into an upper valve seat 109 and an upper valve seat 110, a lower valve seat 111 and a lower valve seat 112 as shown in fig. 8, 9, 10 and 11, wherein the upper valve seat 110 is located in the upper valve seat 109, and the lower valve seat 112 is located in the lower valve seat 111. As shown in fig. 8, 9 and 11, the upper valve seat 109 is cylindrical and has two side ports 103', 104' formed on its circumferential surface, the two side ports being 180 ° different, one of the side ports 103 'communicates with the first port 103 on the valve housing and the other side port 104' communicates with the second port 104 on the valve housing. Similarly, as shown in fig. 8 and 9, the lower valve seat 111 is also cylindrical, and has three side ports 105', 106', 107 'formed on its circumferential surface, the three side ports being uniformly distributed in the circumferential direction (the included angles between two adjacent side ports are equal, and are separated by 120 ° respectively), and the corresponding central angles of the side ports are substantially the same, one side port 105' is communicated with the third port 105 on the valve housing, one side port 106 'is communicated with the fourth port 106 on the valve housing, and one side port 107' is communicated with the fifth port 107 on the valve housing.

Fig. 12 to 14 are schematic structural views of an upper valve element 110 in the switching valve 10 as a six-way valve of the present embodiment, and fig. 15 to 18 are schematic structural views of a lower valve element 112 in the switching valve 10 as a six-way valve of the present embodiment. The upper valve body 110 has a cylindrical shape with a cavity, and a coupling shaft coupled to the actuator 101 is formed at a top surface thereof, and extends from a valve housing of the valve body 102 and is coupled to the actuator. The lower spool 112 is also cylindrical and has a bottom connector 119 formed on the bottom surface thereof, the bottom connector 119 being in communication with the sixth port 108 at the bottom of the valve housing and connecting a flow passage through the lower spool 112.

As shown in fig. 13 and 14, an upper-layer inter-valve-element opening 114 is formed in the bottom surface of the upper-layer valve element 110, and correspondingly, as shown in fig. 15 and 16, a lower-layer inter-valve-element opening 117 is formed in the top surface of the lower-layer valve element 112, and the lower-layer inter-valve-element opening 117 and the upper-layer inter-valve-element opening 114 are communicated with each other.

As shown in fig. 14, three side openings 115 are uniformly formed on the circumferential surface of the upper-layer spool 110, the included angle between two adjacent side openings 115 is 120 °, the three side openings 115 are communicated to form a Y-shaped flow channel, and the upper-layer spool interlayer opening 114 is communicated with the Y-shaped flow channel. As shown in fig. 17, the lower spool 112 has four side openings 118 formed in the circumferential surface thereof. As shown in fig. 18, these four side openings 118 are respectively 60 ° apart in the clockwise direction, which we designate as 0 °,60 °,120 ° and 180 ° side openings respectively, wherein the 0 ° side opening and 180 ° side opening are in communication, the angles differ by 180 ° and are in communication with the bottom joint 119, the 60 ° side opening is located at a position rotated 60 ° clockwise from the 0 ° side opening, the 120 ° side opening is located at a position rotated 120 ° clockwise from the 0 ° side opening, and the 60 ° side opening and the 120 ° side opening are in communication with each other and are simultaneously in communication with the lower spool interlayer opening 117, as shown in fig. 14, 15. That is, the 0 ° side opening is communicated with the two side openings of the 180 ° side opening to form a straight flow passage, the 60 ° side opening is communicated with the two side openings of the 120 ° side opening to form a C-shaped flow passage, the bottom joint 119 of the lower spool 110 is communicated with the straight flow passage, and the lower spool interlayer opening 117 is communicated with the C-shaped passage and also communicated with the upper spool interlayer opening 114.

As shown in fig. 19, when the 0 ° side opening 118 of the lower valve seat 112 is aligned with the side opening 107 'of the lower valve seat 111 to which the No. five port 107 is connected, the flow passage between the No. six port 108 and the No. five port 107 which are communicated with the bottom joint 119 of the lower valve seat 112 is conducted, the No. six port 108 and the No. five port 107 are respectively conducted with the circuit connected to the outside, and at this time, the side opening 106' of the lower valve seat 111 to which the No. four port 106 is connected is aligned with the 120 ° side opening 118 of the lower valve seat 112, so that the No. four port 106 is communicated with the interlayer opening 117 of the lower valve seat.

The lower spool inter-layer opening 117 and the upper spool inter-layer opening 114 are in communication with each other, that is, the three side ports 105', 106', 107' of the lower valve seat 111 are selectively in communication with either the 60 deg. side opening 118 or the 120 deg. side opening 118 of the lower spool 112, and are in communication with the upper spool 110 through the lower spool inter-layer opening 117 and the upper spool inter-layer opening 114.

As shown in fig. 12, 13 and 14, the upper valve core 110 is formed with two intermittent transmission grooves 113 penetrating up and down, the two intermittent transmission grooves 113 are distributed at both sides of the upper valve core interlayer opening 114 and are central symmetry with respect to the center of the upper valve core 110, and correspondingly, the top surface of the lower valve core 112 is formed with two intermittent transmission pins 116 cooperating with the intermittent transmission grooves 113, as shown in fig. 15.

As shown in fig. 20 and 21, the two side ports 103', 104' on the circumferential surface of the upper valve seat 109 are 180 ° different, and the three side openings 115 uniformly distributed on the circumferential surface of the upper valve element 110 are 120 ° in angle, so in order to realize selective switching of the upper valve element 110 between the first port 103 and the second port 104, the upper valve element 110 needs to be rotated 60 ° in the allowable directions of the intermittent drive pin 116 and the intermittent drive groove 113. For example, in the state shown in fig. 20, one side opening of the upper-layer spool 110 is in aligned communication with the side port 104' connecting the No. two port 104 in the upper-layer valve seat 109, at which time the No. one port 103 is closed and the No. two port 104 is opened. The lower valve core 112 is stationary, while the upper valve core 110 rotates counterclockwise by 60 °, the state of the switching valve is as shown in fig. 21, the other side opening of the upper valve core 110 is aligned with the side port 103' of the upper valve seat 109 to which the port No. 103 is connected, and at this time, the port No. 103 is opened, and the port No. 104 is closed.

Further, if adjusted within the allowable range of the intermittent mechanism (intermittent groove and intermittent pin), the opening degrees of the first port 103 and the second port 104 may be proportionally adjusted, as shown in fig. 22.

Thus, the upper and lower valve spools cooperate with the upper and lower valve seats to achieve communication between the bottom joint 119 of the lower valve spool 112 and either side port 105', 106', 107' of the lower valve seat 111, and then the remaining two side ports of the lower valve seat 111 are selected or scaled with the side ports 103', 104' of the upper valve seat 109, optionally via the two

interlayer openings

114, 117.

The following describes, with reference to fig. 2a to 2h, different operation modes of the switching valve as a six-way valve in the present embodiment when applied to the thermal management system (coolant topology) shown in fig. 4.

As shown in fig. 4, the thermal management system of the present embodiment includes an integrated cooling liquid circuit switching valve 10, a first circuit having both ends respectively communicated with a sixth port 108 and a fifth port 107 of the switching valve, a second circuit having both ends respectively communicated with a sixth port 108 and a third port 105 of the switching valve, a third circuit having both ends respectively communicated with a fourth port 106 and a second port 104 of the switching valve, and a fourth circuit having both ends respectively communicated with a fourth port 106 and a first port 103 of the switching valve. The first loop comprises a first pump 1 and a first element 3 which are connected in series, the second loop comprises the first pump 1, the first element 3 and a first heat exchanger 5 which are connected in series, the third loop comprises a second pump 2 and a second element 4 which are connected in series, and the fourth loop comprises the second pump 2, the second element 4 and a second heat exchanger 6 which are connected in series.

When the thermal management system is in the operational mode shown in FIG. 2a, the 0 side opening 118 of the lower spool 112 is aligned with the side port 107 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 0 side opening 118 with the five port 107 in communication with the side port 107' of the lower valve seat 111, as shown in FIG. 23 a; the 120 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 while the 120 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 103' of the upper valve seat 109 such that the port number one 103 communicating with the side port 103 'of the upper valve seat 109 and the port number four 106 communicating with the side port 106' of the lower valve seat 111 communicate as shown in fig. 23a, 23 b. In this case, both ends of the first circuit are sequentially communicated through the fifth port 107, the side port 107' of the lower valve seat 111, the 0 ° side opening 118 of the lower valve seat 112, the bottom joint 119 of the lower valve seat 112, the sixth port 108, and both ends of the fourth circuit are sequentially communicated through the fourth port 106, the side port 106' of the lower valve seat 111, the 120 ° side opening 118 of the lower valve seat 112, the lower valve inter-layer opening 117, the upper valve inter-layer opening 114, one side opening 115 of the upper valve seat 110, the side port 103' of the upper valve seat 109, and the first port 103, at which time the first circuit and the fourth circuit are independently operated, respectively.

When the thermal management system is in the operational mode shown in FIG. 2b, the 0 side opening 118 of the lower spool 112 is aligned with the side port 107 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 0 side opening 118 with the five port 107 in communication with the side port 107' of the lower valve seat 111, as shown in FIG. 24 a; the 120 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 while the 120 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 104' of the upper valve seat 109 such that the port No. 104 communicating with the side port 104 'of the upper valve seat 109 and the port No. 106 communicating with the side port 106' of the lower valve seat 111 communicate as shown in fig. 24a, 24 b. In this case, the two ends of the first circuit are sequentially connected through the fifth port 107, the side port 107' of the lower valve seat 111, the 0 ° side opening 118 of the lower valve seat 112, the bottom joint 119 of the lower valve seat 112, and the sixth port 108, and the two ends of the third circuit are sequentially connected through the fourth port 106, the side port 106' of the lower valve seat 111, the 120 ° side opening 118 of the lower valve seat 112, the lower valve inter-layer opening 117, the upper valve inter-layer opening 114, the one side opening 115 of the upper valve seat 110, the side port 104' of the upper valve seat 109, and the second port 104, and at this time, the first circuit and the third circuit are independently operated, respectively.

When the thermal management system is in the operational mode shown in FIG. 2c, the 180 side opening 118 of the lower spool 112 is aligned with the side port 105 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 180 side opening 118 with the three port 105 in communication with the side port 105' of the lower valve seat 111, as shown in FIG. 25 a; the 60 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 while the 60 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 103' of the upper valve seat 109 such that the port number one 103 communicating with the side port 103 'of the upper valve seat 109 and the port number four 106 communicating with the side port 106' of the lower valve seat 111 communicate as shown in fig. 25a, 25 b. In this case, both ends of the second circuit are sequentially communicated through the No. three port 105, the side port 105' of the lower valve seat 111, the 180 ° side opening 118 of the lower valve seat 112, the bottom joint 119 of the lower valve seat 112, the No. six port 108, and both ends of the fourth circuit are sequentially communicated through the No. four port 106, the side port 106' of the lower valve seat 111, the 60 ° side opening 118 of the lower valve seat 112, the lower valve inter-layer opening 117, the upper valve inter-layer opening 114, the one side opening 115 of the upper valve seat 110, the side port 103' of the upper valve seat 109, and the No. one port 103, at which time the second circuit and the fourth circuit are independently operated, respectively.

When the thermal management system is in the operational mode shown in FIG. 2d, the 180 side opening 118 of the lower spool 112 is aligned with the side port 105 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 180 side opening 118 with the three port 105 in communication with the side port 105' of the lower valve seat 111, as shown in FIG. 26 a; the 60 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 while the 60 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 104' of the upper valve seat 109 such that the port No. 104 communicating with the side port 104 'of the upper valve seat 109 and the port No. 106 communicating with the side port 106' of the lower valve seat 111 communicate as shown in fig. 26a, 26 b. In this case, both ends of the second circuit are sequentially communicated through the No. three port 105, the side port 105' of the lower valve seat 111, the 180 ° side opening 118 of the lower valve seat 112, the bottom joint 119 of the lower valve seat 112, the No. six port 108, and both ends of the third circuit are sequentially communicated through the No. four port 106, the side port 106' of the lower valve seat 111, the 60 ° side opening 118 of the lower valve seat 112, the lower valve inter-layer opening 117, the upper valve inter-layer opening 114, the one side opening 115 of the upper valve seat 110, the side port 104' of the upper valve seat 109, and the No. two port 104, at which time the second circuit and the third circuit are independently operated, respectively.

When the thermal management system is in the operational mode shown in FIG. 2e, the 180 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 180 side opening 118 with the four port 106 in communication with the side port 106' of the lower valve seat 111, as shown in FIG. 27 a; the 60 side opening 118 of the lower spool 112 is aligned with the side port 107 'of the lower valve seat 111 while the 60 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 103' of the upper valve seat 109 such that the port number one 103 communicating with the side port 103 'of the upper valve seat 109 and the port number five 107 communicating with the side port 107' of the lower valve seat 111 communicate as shown in fig. 27a, 27 b. In this case, the first circuit and the fourth circuit are communicated through the No. six port 108, the bottom joint 119 of the lower valve spool 112, the 180 ° side opening 118 of the lower valve spool 112, the side port 106' of the lower valve seat 111, the No. four port 106, the No. one port 103, the side port 103' of the upper valve seat 109, the one side opening 115 of the upper valve spool 110, the upper valve spool interlayer opening 114, the lower valve spool interlayer opening 117, the 60 ° side opening 118 of the lower valve spool 112, the side port 107' of the lower valve seat 111, and the No. five port 107, and at this time, the first circuit and the fourth circuit are operated in series through the six-way valve.

When the thermal management system is in the operational mode shown in FIG. 2f, the 180 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 180 side opening 118 with the four port 106 in communication with the side port 106' of the lower valve seat 111, as shown in FIG. 28 a; the 60 side opening 118 of the lower spool 112 is aligned with the side port 107 'of the lower valve seat 111 while the 60 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 104' of the upper valve seat 109 such that the port No. two 104 communicating with the side port 104 'of the upper valve seat 109 and the port No. five 107 communicating with the side port 107' of the lower valve seat 111 communicate as shown in fig. 28a, 28 b. In this case, the first circuit and the third circuit are communicated through the No. six port 108, the bottom joint 119 of the lower spool 112, the 180 ° side opening 118 of the lower spool 112, the side port 106' of the lower valve seat 111, the No. four port 106, the No. two port 104, the side port 104' of the upper valve seat 109, the one side opening 115 of the upper spool 110, the upper spool interlayer opening 114, the lower spool interlayer opening 117, the 60 ° side opening 118 of the lower spool 112, the side port 107' of the lower valve seat 111, and the No. five port 107, and at this time, the first circuit and the third circuit are operated in series through the six-way valve.

When the thermal management system is in the operational mode shown in FIG. 2g, the 0 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 0 side opening 118 with the four port 106 in communication with the side port 106' of the lower valve seat 111, as shown in FIG. 29 a; the 120 side opening 118 of the lower spool 112 is aligned with the side port 105 'of the lower valve seat 111 while the 120 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 103' of the upper valve seat 109 such that the port number one 103 communicating with the side port 103 'of the upper valve seat 109 and the port number three 105 communicating with the side port 105' of the lower valve seat 111 communicate as shown in fig. 29a, 29 b. In this case, the second circuit and the fourth circuit are communicated through the No. six port 108, the bottom joint 119 of the lower spool 112, the 0 ° side opening 118 of the lower spool 112, the side port 106' of the lower valve seat 111, the No. four port 106, the No. one port 103, the side port 103' of the upper valve seat 109, the one side opening 115 of the upper spool 110, the upper spool interlayer opening 114, the lower spool interlayer opening 117, the 120 ° side opening 118 of the lower spool 112, the side port 105' of the lower valve seat 111, the No. three port 105, and at this time, the second circuit and the fourth circuit are operated in series through the six-way valve.

When the thermal management system is in the operational mode shown in FIG. 2h, the 0 side opening 118 of the lower spool 112 is aligned with the side port 106 'of the lower valve seat 111 and the bottom sub 119 in communication with the six port 108 communicates through the 0 side opening 118 with the four port 106 in communication with the side port 106' of the lower valve seat 111, as shown in FIG. 30 a; the 120 side opening 118 of the lower spool 112 is aligned with the side port 105 'of the lower valve seat 111 while the 120 side opening 118 communicates with the lower spool inter-layer opening 117, the lower spool inter-layer opening 117 communicates with the upper spool inter-layer opening 114, and one side opening 115 of the upper spool 110 is aligned with the side port 104' of the upper valve seat 109 such that the port No. 104 communicating with the side port 104 'of the upper valve seat 109 and the port No. 105 communicating with the side port 105' of the lower valve seat 111 communicate as shown in fig. 30a, 30 b. In this case, the second circuit and the third circuit are communicated through the No. six port 108, the bottom joint 119 of the lower spool 112, the 0 ° side opening 118 of the lower spool 112, the side port 106' of the lower valve seat 111, the No. four port 106, the No. two port 104, the side port 104' of the upper valve seat 109, the one side opening 115 of the upper spool 110, the upper spool interlayer opening 114, the lower spool interlayer opening 117, the 120 ° side opening 118 of the lower spool 112, the side port 105' of the lower valve seat 111, and the No. three port 105, and at this time, the second circuit and the third circuit are operated in series through the six-way valve.

Second embodiment

The difference with the first embodiment lies in that the valve seat of this embodiment is not provided with the valve shell outward, the valve seat can be as an organic whole structure, the valve seat is the cylinder form that both ends are confined, the connecting axle of upper valve core stretches out from the disk seat terminal surface that is close to upper valve core top, the bottom joint stretches out from the disk seat terminal surface that is close to lower floor's valve core bottom.

Or, the valve seat is divided into an upper valve seat and a lower valve seat, the upper valve seat is in a cylinder shape with a closed top and an open bottom, the lower valve seat is in a cylinder shape with a closed top and an open bottom, the connecting shaft extends from the closed end face of the upper valve seat, the bottom joint extends from the closed end face of the lower valve seat, the upper valve core is rotatably installed in the upper valve seat, and the lower valve core is rotatably installed in the lower valve seat.

The integrated cooling liquid path switching valve is reasonably provided with the side openings in the upper and lower valve cores, the upper and lower valve seats and the ports on the valve shell for communicating an external loop, and can meet a plurality of functional requirements of a complex cooling liquid topological structure by utilizing one valve by changing the relative positions of the upper valve core and the upper valve seat, the lower valve core and the lower valve seat, the relative positions of the upper valve core and the lower valve core, the free switching of a plurality of loops, the independent operation of the loops, the series operation of the loops and the like. The utility model can simplify the complex pipeline configuration in the cooling liquid topological structure and reduce the number of the used valves, thereby ensuring that the cooling liquid pipeline switching device has more compact volume, small occupied space and obviously reduced cost.

The present utility model has been described in detail with reference to specific examples, which are merely preferred examples of the present utility model, and the present utility model is not limited to the above-described embodiments. Equivalent substitutions and modifications of the connection structure of the dismounting plate and the handle, the shape of the dismounting plate and the number, shape, specification, etc. of the notches, etc. by those skilled in the art, without departing from the principle of the present utility model, shall be considered as being within the technical scope of the present utility model.

Claims

1. The valve body of the integrated cooling liquid path switching valve comprises a valve seat and a valve core, a plurality of flow passages are formed between the valve core and the valve seat, the valve core rotates to different positions in the valve seat to conduct different flow passages, so that the switching valve is communicated with different external loops, and the integrated cooling liquid path switching valve is characterized in that the valve core is divided into an upper layer valve core and a lower layer valve core, the lower layer valve core rotates relative to the valve seat under the drive of the upper layer valve core, and the upper layer valve core can rotate relative to the lower layer valve core; a plurality of side ports are formed on the circumferential surface of the valve seat, and a bottom port is formed on the end surface of the valve seat, which is close to the lower-layer valve core; the lower-layer valve core is provided with a bottom joint at a position corresponding to the bottom port, and the upper-layer valve core and the lower-layer valve core are both provided with side openings and a middle runner communicated with each other.

2. The integrated cooling fluid circuit switching valve according to claim 1, further comprising an actuator, wherein the actuator is mounted on a valve seat end surface close to an upper-layer valve core, the upper-layer valve core is driven by the actuator to rotate, and a connecting shaft connected with the actuator is arranged at the top of the upper-layer valve core.

3. The integrated cooling fluid circuit switching valve according to claim 2, wherein the valve seat is of an integrated structure, the valve seat is cylindrical with two closed ends, the connecting shaft extends from the end face of the valve seat near the top of the upper-layer valve core, and the bottom joint extends from the end face of the valve seat near the bottom of the lower-layer valve core.

4. The integrated cooling liquid path switching valve according to claim 2, wherein the valve seat is divided into an upper valve seat and a lower valve seat, the upper valve seat is a cylindrical body with a closed top and an open bottom, the lower valve seat is a cylindrical body with a closed top and an open bottom, the connecting shaft extends from a closed end face of the upper valve seat, the bottom joint extends from a closed end face of the lower valve seat, the upper valve core is rotatably installed in the upper valve seat, and the lower valve core is rotatably installed in the lower valve seat.

5. The integrated cooling fluid circuit switching valve according to claim 2, wherein the valve seat is fixedly installed in a valve housing with both ends closed, the valve housing is provided with connectors for connecting an external circuit at positions corresponding to the side port and the bottom port, the connecting shaft extends from a top end surface of the valve housing near a top of the upper valve core, and the bottom connector extends from a bottom end surface of the valve housing near a bottom of the lower valve core.

6. The integrated cooling liquid path switching valve according to claim 5, wherein the valve seat is a cylindrical shape with both ends open, or is divided into an upper valve seat and a lower valve seat with both ends open.

7. The integrated cooling fluid circuit switching valve according to claim 1, wherein the lower valve core is formed with an intermittent drive pin on a top thereof, and the upper valve core is formed with an intermittent drive groove engaged with the intermittent drive pin.

8. The integrated cooling fluid circuit switching valve of claim 1, wherein an upper-layer valve core interlayer opening is formed on the bottom surface of the upper-layer valve core, the upper-layer valve core interlayer opening is communicated with the side opening of the upper-layer valve core, two side openings in the lower-layer valve core are communicated and communicated with a bottom joint of the lower-layer valve core, a lower-layer valve core interlayer opening is formed on the top surface of the lower-layer valve core, and the lower-layer valve core interlayer opening and the upper-layer valve core interlayer opening are communicated to form the intermediate runner.

9. The integrated cooling fluid circuit switching valve of claim 1, wherein in different modes of operation, different side openings of the upper and lower valve spools communicate with different side ports of the valve seat to form at least two flow passages, and wherein one flow passage communicates with a bottom sub in the lower valve spool.

10. The integrated cooling circuit switching valve of claim 9, wherein each flow passage is connected to a different external circuit, and the external circuits are operated independently by the switching valves, respectively.

11. The integrated cooling circuit switching valve of claim 9, wherein each flow passage is connected to a different external circuit, wherein at least two external circuits are operated in series through the switching valve.

12. The integrated cooling liquid path switching valve according to claim 1, wherein the switching valve is a six-way valve, the valve seat is provided with two side ports on the outer circumferential surface of the upper-layer valve core and three side ports on the outer circumferential surface of the lower-layer valve core, and a bottom port is formed on the end surface close to the lower-layer valve core;

The periphery of the lower valve core is provided with four side openings, the end face close to the upper valve core is provided with a lower valve core interlayer opening, two side openings are communicated to form a straight flow channel, the other two side openings are communicated to form a C-shaped flow channel, a bottom joint of the lower valve core is communicated with the straight flow channel, and the lower valve core interlayer opening is communicated with the C-shaped flow channel and is also communicated with the upper valve core interlayer opening.

13. The integrated cooling fluid circuit switching valve according to claim 12, wherein,

the valve seat is divided into an upper layer valve seat and a lower layer valve seat, the upper layer valve core is positioned in the upper layer valve seat, and the lower layer valve core is positioned in the lower layer valve seat; two side ports are uniformly distributed on the circumferential surface of the upper-layer valve seat, and three side ports are uniformly distributed on the circumferential surface of the lower-layer valve seat;

14. The integrated cooling liquid path switching valve according to claim 12, wherein the upper valve core is formed with two intermittent transmission grooves penetrating up and down, the intermittent transmission grooves are distributed on both sides of an interlayer opening of the upper valve core and are centrosymmetric with respect to a center of a circle of the upper valve core, the top surface of the lower valve core is formed with two intermittent transmission pins matched with the intermittent transmission grooves, and the upper valve core can rotate 60 ° relative to the lower valve core in an allowable direction of the intermittent transmission pins and the intermittent transmission grooves.

15. A thermal management system comprising the integrated cooling fluid circuit switching valve of any one of claims 1 to 14.