CN216812978U - Valve device, thermal management system and electric vehicle - Google Patents

Abstract

The embodiment of the application discloses a valve device, a thermal management system and an electric vehicle, wherein the valve device comprises a valve shell and a valve core, and the valve core can rotate relative to the valve shell; the valve shell is provided with a plurality of interfaces which are distributed around the rotation center of the valve core; the valve core is provided with a plurality of channels which are not communicated with each other, and the projections of the channels in a plane vertical to the rotation central axis of the valve core are not crossed with each other; each passage of the valve spool is used to communicate with at least two ports of the valve housing. The structural design of the valve device can realize the switching of various runner modes, the occupied space is small, and when the valve device is applied to a thermal management system of an electric vehicle, the connecting structure of a plurality of circulation loops of the thermal management system can be simplified.

Description

Valve devices, thermal management systems and electric vehicles

technical field

The present application relates to the technical field of thermal management, and in particular, to a valve device, a thermal management system and an electric vehicle.

Background technique

Electric vehicles have gradually become popular in the market due to their advantages of energy saving and environmental protection. In practical application scenarios, it is usually necessary to thermally manage the management objects such as battery packs, passenger compartments, and powertrains of electric vehicles, so as to make the temperature of these management objects. remain within the normal operating range.

Since there are many management objects for thermal management of electric vehicles, if each management object is set up with an independent subsystem, the entire thermal management system will be too complicated. For this reason, the existing thermal management system is integrated The development is to integrate the circulation loops of each management object, so it is necessary to use valve components to realize the switching of each flow path. At present, the commonly used method is to integrate several multi-port valves. Although this method can meet the requirements of flow path switching, the valve assembly occupies a large space, and there are still relatively few modes that can be switched, and the versatility is not strong.

In addition to electric vehicles, other multi-mode switching and hot and cold fluid distribution applications also require the valve device to have multiple switching modes.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a valve device, a thermal management system and an electric vehicle. The structural design of the valve device can realize switching of various flow channel modes, and occupies a small space. When applied to a thermal management system of an electric vehicle, it can be simplified. The connection structure of multiple circulation loops of the thermal management system.

A first aspect of the embodiments of the present application provides a valve device, including a valve housing and a valve core, the valve core can rotate relative to the valve housing, the valve core is usually set to a cylindrical structure, or has a cylindrical main body structure; the valve housing has multiple A plurality of ports are arranged around the rotation center of the valve core; the valve core has multiple channels, the multiple channels are not communicated with each other, and the projections of the multiple channels in a plane perpendicular to the rotation center axis of the valve core do not cross each other ;Each channel of the valve core is used to communicate with at least two ports of the valve shell.

The valve device rotates relative to the valve housing through the valve core, so that multiple channels of the valve core can be connected to at least two ports of the valve housing respectively, so that multiple flow channels can be formed, and different flow channel modes can be switched by the rotation of the valve core , the valve device can realize the switching of various flow channel modes, has a high degree of integration, and occupies a small space.

Based on the first aspect, the embodiments of the present application also provide the first implementation of the first aspect: the multiple channels of the valve core are in the same plane, and it can be considered that the centerlines of the multiple channels are in the same plane, that is, the multiple channels are in the valve There is no layered arrangement in the height direction of the core. In this way, the volume occupied by the valve core is smaller, and accordingly, the volume occupied by the valve device is also smaller.

Based on the first aspect, or the first implementation manner of the first aspect, the embodiments of the present application further provide a second implementation manner of the first aspect: the multiple channels include a first channel and a second channel, and the first channel The interface communicating with the inlet end is not adjacent to the interface communicating with the outlet end of the first channel, and the interface communicating with the inlet end of the second channel is adjacent to the interface communicating with the outlet end of the second channel. It can be understood that after the first passage communicates with at least two interfaces of the valve housing, there are other interfaces between the interface communicated with the inlet end of the first passage and the interface communicated with the outlet end of the first passage; the second passage communicates with the valve After at least two interfaces of the shell, there is no other interface between the interface that communicates with the inlet end of the second channel and the interface that communicates with the outlet end of the second channel. If the second channel only communicates with two interfaces, the connected two The interfaces are arranged adjacently. If the second channel is connected to more than three interfaces, the connected interfaces are arranged in sequence, that is, adjacent to each other. This arrangement is beneficial to increase the flow channel patterns of the valve device.

Based on the second implementation of the first aspect, the embodiments of the present application also provide a third implementation of the first aspect: one side of the first channel is provided with a second channel, and the other side is provided with at least one second channel aisle. With this arrangement, the valve device can have more flow channel patterns under the condition of having the same number of channels.

Based on the third implementation manner of the first aspect, the embodiments of the present application further provide the fourth implementation manner of the first aspect: two second channels are provided on the other side of the first channel.

Based on the first aspect, any one of the first to fourth embodiments of the first aspect, the embodiments of the present application further provide a fifth embodiment of the first aspect: the valve casing has a casing wall portion, and the casing wall The valve core is perpendicular to the rotation center axis of the valve core, and at least part of the plurality of ports of the valve core is formed on the shell wall part. In this way, it is beneficial to reduce the volume of the valve device, so that the pipelines connected to the interface of the valve casing are relatively concentrated, which is beneficial to the development trend of miniaturization.

Based on the first aspect, any one of the first to fifth embodiments of the first aspect, the embodiments of the present application further provide a sixth embodiment of the first aspect: the valve core is in a cylindrical structure, and the valve core The plurality of channels include a curved channel running through the peripheral wall of the valve core or a curved channel running through the end wall of the valve core, so as to adapt to different interface forms of the valve shell and facilitate the connection of the interface.

Based on the first aspect and any one of the first to sixth embodiments of the first aspect, the embodiments of the present application further provide a seventh embodiment of the first aspect: the multiple interfaces of the valve housing include not many In the nine ports, that is, the valve housing is provided with at most nine ports, and the multiple channels of the valve core include no more than four channels, that is, the valve core has at most four channels. In this way, the processing of the valve housing and the valve core is facilitated, and the processing difficulty can be reduced.

Based on the seventh implementation of the first aspect, the embodiments of the present application further provide the eighth implementation of the first aspect: the multiple ports of the valve housing include nine ports, of which eight ports are around the center of rotation of the valve core Evenly spaced, the ninth port flanks one of the eight ports. In this way, combined with the channel design of the valve core, the valve device can realize switching of up to 24 flow channel modes, with a higher degree of integration. Among them, the eight ports are evenly arranged around the rotation center of the valve core, so that the valve core rotates at the same angle, i.e. It can realize the switching of a flow channel mode, which is convenient for control.

Based on the seventh implementation of the first aspect, the embodiments of the present application further provide the ninth implementation of the first aspect: the multiple ports of the valve housing include eight ports, and the eight ports are evenly arranged around the rotation center of the valve core cloth. In this way, combined with the channel design of the valve core, the valve device can switch up to 8 flow channel modes, and the eight ports are evenly arranged around the rotation center of the valve core, so that one flow channel mode can be realized by rotating the valve core at the same angle switch for easy control.

Based on the ninth implementation of the first aspect, the embodiment of the present application further provides the tenth implementation of the first aspect: the valve device further includes a proportional three-way valve connected in series with one of the eight ports of the valve housing. In this way, the valve device can also realize the switching of up to 24 flow channel modes. Under the condition of realizing the same function, the number of ports on the valve shell is relatively small, which is conducive to reducing the occupied volume of the valve shell and the valve core, and the ratio of series connection The three-way valve can be arranged according to the space of the application system, and is relatively flexible in arrangement.

A second aspect of the embodiments of the present application provides a thermal management system, which includes multiple circulation loops, and the multiple circulation loops share a valve device, and the valve device is any implementation of the first aspect or the first aspect of the foregoing embodiments The valve device, the thermal management system equipped with the valve device can realize the switching of multiple circulation modes through one valve device, and the pipeline interfaces are centralized, which can shorten the pipeline connection distance, simplify the pipeline layout, and is conducive to the miniaturization of the system. .

A third aspect of the embodiments of the present application provides an electric vehicle, including the thermal management system of the second aspect, which can be used to switch different modes according to different thermal management requirements, which is beneficial to reduce the energy consumption and cost of thermal management.

Description of drawings

FIG. 1 is a schematic three-dimensional structural diagram of a valve device provided by an embodiment of the application;

Fig. 2 is a three-dimensional schematic diagram of the valve core of the valve device in Fig. 1;

3 is a schematic cross-sectional view of the valve device shown in FIG. 1 at the position of the passage of the valve core;

Figures 4-1 to 4-24 show schematic diagrams of 24 flow channel modes of the valve device shown in Figure 1;

5 is a schematic cross-sectional view of a valve device provided by another embodiment of the present application;

6 is a schematic cross-sectional view of a valve device provided by another embodiment of the present application;

Figures 7-1 to 7-8 show schematic diagrams of 8 flow channel modes of the valve device shown in Figure 6;

FIG. 8 is a schematic structural diagram of a valve device provided by another embodiment of the present application.

Detailed ways

Embodiments of the present application provide a valve device, a thermal management system, and an electric vehicle; the valve device has multiple flow channel modes and can be switched between multiple flow channel modes, and is suitable for use in a thermal management system applied to an electric vehicle or other applications. In the case of thermal management systems with multiple circulation loops, the connection structure between multiple circulation loops in these thermal management systems can be simplified.

The terms "first", "second", etc. mentioned in this application document are only used to distinguish similar objects, and do not indicate a specific order or priority or distinction. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

On the one hand, an embodiment of the present application provides a valve device. As shown in FIG. 1 , the valve device includes a valve housing 10 and a valve core 20 . The valve core 20 is located in the valve housing 10 , and the valve core 20 can rotate relative to the valve housing 10 . Usually, the valve core 20 can be fixed with a rotating shaft 30 , and the rotating shaft 30 is driven to rotate by an actuator (not shown in the figure) so as to drive the valve core 20 to rotate relative to the valve housing 10 . Among them, the actuator can usually use equipment such as motor.

Referring to FIG. 2 together, the valve core 20 generally has a cylindrical structure, or has a cylindrical body structure, and the valve core 20 has a plurality of channels that are not connected to each other. In this embodiment, each channel is a core passing through the valve core 20 Curved channels of the peripheral wall 201 , that is, openings at both ends of each channel are formed in the core peripheral wall 201 .

Referring to FIG. 3 together, the valve casing 10 has a cylindrical casing peripheral wall 101, and the valve casing 10 is formed with nine ports on the casing peripheral wall 101. These nine ports are distributed around the rotation center of the valve core 20. Specifically, nine ports are The ports are distributed on a circle with the rotation center of the valve core 20 as the center of the circle. For the convenience of description and understanding, they will be referred to as the first interface 11, the second interface 12, the third interface 13, the fourth interface 14, the fifth interface 15, the sixth interface 16, the seventh interface 17, and the eighth interface 18 respectively. and the ninth port 19, wherein the first to eighth ports are arranged at intervals along the circumference of the valve housing 10, and the ninth port 19 is provided on the side of the fifth port 15, which can be simply understood as the ninth port 19 next to The fifth port 15, so that in some modes, one end of a channel of the valve core 20 can communicate with the fifth port 15 and the ninth port 19 at the same time (will be described in detail later).

Still referring to FIG. 3 , in this embodiment, the valve core 20 is specifically provided with four independent channels, that is, the four channels are not connected to each other, and the four channels are in a plane perpendicular to the rotation center axis of the valve core 20 The projections inside do not cross each other; with reference to FIG. 2 , the four channels of the valve core 20 are located in the same plane, and it can be considered that the center lines of the four channels are in the same plane, in the height direction of the valve core 20 (that is, the upper and lower sides in the perspective of FIG. 2 ) There is no dislocation or layered arrangement in the direction of the valve core 20, so the thickness of the valve core 20 (that is, the dimension in the height direction) can be set relatively small, and accordingly, the volume of the valve shell 10 matched with the valve core 20 can be relatively small. , the valve structure composed of the valve shell 10 and the valve core 20 occupies a small volume.

In other embodiments, the number of channels of the valve core 20 may be other numbers, and in this case, the arrangement of each channel may be similar to the above; When the upper arrangement is inconvenient, or other factors cause inconvenience to be arranged on the same layer, these channels can be arranged on the valve core 20 into two upper and lower layers.

Each channel of the valve core 20 is used to communicate with at least two ports of the valve housing 10. It can be understood that because the channels of the valve core 20 are not communicated with each other, each channel that communicates with the at least two ports is not communicated with each other, and is At least two interfaces connected by the channel can be connected to the circulation loop in the thermal management system, so that when the valve device is in one mode, a plurality of flow channels can be formed and connected to a plurality of circulation loops, that is, each flow channel is connected to In a circulation loop, through the rotation of the valve core 20 relative to the valve housing 10, the communication mode of these interfaces can be changed, that is, the switching of multiple flow channel modes can be realized.

In this embodiment, the four channels of the valve core 20 include two channel types. Specifically, the first channel is provided with one, which is referred to as the first channel 21 here, and the second channel is provided with three channels, which are referred to here as the first channel 21 . The second channel one 221 , the second channel two 222 and the third channel three 223 are used for distinction.

Obviously, after the valve device is connected to the circulation circuit, each channel of the valve core 20 has an inlet end for fluid inflow and an outlet end for outflow. The first channel, that is, after the first channel 21 communicates with at least two interfaces of the valve housing 10, the interface connected to the inlet end and the interface connected to the outlet end are not adjacent, and the second channel (including the second channel 221, After the second passage 222 and the third passage 223) communicate with at least two ports of the valve housing 10, the port communicating with the inlet end thereof is adjacent to the port communicating with the outlet end.

The non-adjacent here means that in the arrangement direction of the multiple interfaces of the valve housing 10, that is, along the circumferential direction of the casing peripheral wall 101 of the valve housing 10, there are other interfaces between the two interfaces, and the adjacent means that there are other interfaces between the two interfaces. In the arrangement direction of the multiple ports of the valve shell 10, that is, along the circumferential direction of the shell peripheral wall 101 of the valve shell 10, there are no other ports between the two ports; The interface 18 is adjacent, and the first interface 11 and the seventh interface 17 are not adjacent.

In terms of the relative positions of the valve housing 10 and the valve core 20 shown in FIG. 3 , the first passage 21 of the valve core 20 communicates with the fifth interface 15 and the eighth interface 18 of the valve housing 10 , these two interfaces are not adjacent, and the valve The second channel 1 221 of the core 20 communicates with the third interface 13 and the fourth interface 14 of the valve housing 10, these two interfaces are adjacent, and the second channel 2 222 communicates with the first interface 11 and the second interface 12 of the valve housing 10, The two ports are adjacent to each other, and the second channel 3 223 communicates with the sixth port 16 and the seventh port 17 of the valve housing 10 .

In the example shown in FIG. 3, one side of the first channel 21 is provided with two second channels, namely the second channel 1 221 and the second channel 222, and the other side of the first channel 21 is provided with a second channel, That is, the second channel three 223 . It can be understood that, in other embodiments, other numbers of second channels may also be provided on the other side of the first channel 21 .

After this setting, the valve device shown in FIG. 3 has 24 flow channel modes, which will be described below with reference to FIGS. 4-1 to 4-24. It should be noted that Fig. 4-1 to Fig. 4-24 are only schematic diagrams. In order to illustrate the flow channel pattern clearly, each channel of the valve core 20 is represented by a curved line with an arrow, and the direction of the arrow can be understood as the flow of the fluid in the corresponding channel. The flow direction, in the actual setting, the flow direction of the fluid in each channel is not limited to the direction of the arrow marked in the figure, and can be adjusted as required.

As shown in FIG. 4-1 , in this flow channel mode, the first channel 21 of the valve core 20 communicates with the fifth port 15 and the eighth port 18 of the valve shell 10 , and the second channel 1 221 communicates with the third port of the valve shell 10 13 and the fourth interface 14, the second channel 222 communicates with the first interface 11 and the second interface 12 of the valve shell 10, and the second channel 3 223 communicates with the sixth interface 16 and the seventh interface 17 of the valve shell 10, as shown in the figure The arrows indicate that the flow paths of the aforementioned flow channels are: the eighth interface 18 → the first channel 21 → the fifth interface 15, the fourth interface 14 → the second channel one 221 → the third interface 13, the second interface 12 → the first interface Two channel two 222→first interface 11, sixth interface 16→second channel three 223→seventh interface 17.

As shown in Figure 4-2, in this flow channel mode, the flow paths of each flow channel of the valve device are: the eighth interface 18 → the first channel 21 → the ninth interface 19, the fourth interface 14 → the second channel 1 221→third interface 13, second interface 12→second channel two 222→first interface 11, sixth interface 16→second channel three 223→seventh interface 17.

As shown in Figure 4-3, in this flow channel mode, the flow paths of each flow channel of the valve device are: the eighth interface 18 → the first channel 21 → the fifth interface 15 and the ninth interface 19, and the fourth interface 14 → the second channel one 221 → the third interface 13 , the second interface 12 → the second channel two 222 → the first interface 11 , the sixth interface 16 → the second channel three 223 → the seventh interface 17 .

Comparing Fig. 4-1 to Fig. 4-3, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected to the three second channels are the same, the difference is that the flow paths connected to the first channel 21 are different, as before As mentioned above, since the ninth port 19 and the fifth port 15 are arranged next to each other, properly adjusting the rotation angle of the valve core 20 in the interval shown in FIG. 4-1 to FIG. 4-3 can make the flow of the three second channels connected Under the condition that the path remains unchanged, the first channel 21 has three modes, namely, connecting the eighth port 18 and the fifth port 15, or connecting the eighth port 18 and the ninth port 19, or making the eighth port 18 communicate with the fifth port 18 at the same time. interface 15 and ninth interface 19 . It should be pointed out that, in order to realize the three flow path modes in one rotation interval, in the first port 11 to the eighth port 18, the shell wall of the valve shell 10 and the channel of the valve core 20 between the two adjacent ports The size of the opening needs to be matched with the design. It is understood with reference to Figure 3 that, for example, the two end openings of the second channel 1 221 coincide with the third interface 13 and the fourth interface 14 respectively, but in Figure 4-1 to Figure 4-3 In the three modes, the overlapping flow area is different.

As shown in Figure 4-4, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: sixth interface 16→first channel 21→first interface 11, fourth interface 14→second channel one 221→fifth interface 15, second interface 12→second channel two 222→third interface 13, eighth interface 18→second channel three 223→seventh interface 17.

As shown in Figure 4-5, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the sixth interface 16 → the first channel 21 → the first interface 11, the fourth interface 14 → the second channel 1 221→the ninth interface 19, the second interface 12→the second channel two 222→the third interface 13, the eighth interface 18→the second channel three 223→the seventh interface 17.

As shown in Figure 4-6, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the sixth interface 16 → the first channel 21 → the first interface 11, the fourth interface 14 → the second channel 1 221→the fifth interface 15 and the ninth interface 19, the second interface 12→the second channel two 222→the third interface 13, the eighth interface 18→the second channel three 223→the seventh interface 17.

Comparing Fig. 4-4 to Fig. 4-6, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected by the first channel 21, the second channel 222 and the second channel three 223 are the same, and the difference lies in the The flow paths communicated by the second channel 1 221 are different. Properly adjusting the rotation angle of the valve core 20 in the interval shown in Fig. 4-4 to Fig. 4-6 can make the second channel 1 221 exist under the condition that the other flow paths remain unchanged. Three modes, namely connecting the fourth interface 14 and the fifth interface 15, or connecting the fourth interface 14 and the ninth interface 19, or making the fourth interface 14 connect the fifth interface 15 and the ninth interface 19 at the same time.

As shown in Figure 4-7, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the second interface 12 → the first channel 21 → the seventh interface 17, the sixth interface 16 → the second channel 1 221→fifth interface 15, fourth interface 14→second channel two 222→third interface 13, eighth interface 18→second channel three 223→first interface 11.

As shown in Figure 4-8, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the second interface 12 → the first channel 21 → the seventh interface 17, the sixth interface 16 → the second channel 1 221→the ninth interface 19, the fourth interface 14→the second channel two 222→the third interface 13, the eighth interface 18→the second channel three 223→the first interface 11.

As shown in Figure 4-9, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the second interface 12 → the first channel 21 → the seventh interface 17, the sixth interface 16 → the second channel 1 221→the fifth interface 15 and the ninth interface 19, the fourth interface 14→the second channel two 222→the third interface 13, the eighth interface 18→the second channel three 223→the first interface 11.

Comparing Fig. 4-7 to Fig. 4-9, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected with the first channel 21, the second channel 222 and the second channel 3 223 are the same, and the difference lies in the The flow paths communicated by the second channel one 221 are different. Properly adjusting the rotation angle of the valve core 20 in the interval shown in Fig. 4-7 to Fig. 4-9 can make the second channel one 221 exist under the condition that the other flow paths remain unchanged. Three modes, namely connecting the sixth interface 16 and the fifth interface 15, or connecting the sixth interface 16 and the ninth interface 19, or making the sixth interface 16 connect the fifth interface 15 and the ninth interface 19 at the same time.

As shown in Figure 4-10, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the eighth interface 18 → the first channel 21 → the third interface 13, the sixth interface 16 → the second channel one 221→seventh interface 17, fourth interface 14→second channel two 222→fifth interface 15, second interface 12→second channel three 223→first interface 11.

As shown in Figure 4-11, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the eighth interface 18 → the first channel 21 → the third interface 13, the sixth interface 16 → the second channel one 221→seventh interface 17, fourth interface 14→second channel two 222→ninth interface 19, second interface 12→second channel three 223→first interface 11.

As shown in Figure 4-12, in this flow channel mode, the flow paths of each flow channel of the valve device are: the eighth port 18 → the first channel 21 → the third port 13, the sixth port 16 → the second channel one 221→seventh interface 17, fourth interface 14→second channel two 222→fifth interface 15 and ninth interface 19, second interface 12→second channel three 223→first interface 11.

Comparing Fig. 4-10 to Fig. 4-12, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected by the first channel 21, the second channel one 221 and the second channel three 223 are the same. The flow paths communicated by the second channel 222 are different. Properly adjusting the rotation angle of the valve core 20 in the interval shown in FIG. 4-10 to FIG. 4-12 can make the second channel 222 exist under the condition that other flow paths remain unchanged. Three modes, namely connecting the fourth interface 14 and the fifth interface 15, or connecting the fourth interface 14 and the ninth interface 19, or making the fourth interface 14 connect the fifth interface 15 and the ninth interface 19 at the same time.

As shown in Figure 4-13, in this flow channel mode, the flow paths of each flow channel of the valve device are: the fourth interface 14 → the first channel 21 → the first interface 11, the eighth interface 18 → the second channel 1 221→seventh interface 17, sixth interface 16→second channel two 222→fifth interface 15, second interface 12→second channel three 223→third interface 13.

As shown in Figure 4-14, in this flow channel mode, the flow paths of each flow channel of the valve device are: the fourth interface 14 → the first channel 21 → the first interface 11, the eighth interface 18 → the second channel 1 221→seventh interface 17, sixth interface 16→second channel two 222→ninth interface 19, second interface 12→second channel three 223→third interface 13.

As shown in Figure 4-15, in this flow channel mode, the flow paths of each flow channel of the valve device are: the fourth interface 14 → the first channel 21 → the first interface 11, the eighth interface 18 → the second channel 1 221→seventh interface 17, sixth interface 16→second channel two 222→fifth interface 15 and ninth interface 19, second interface 12→second channel three 223→third interface 13.

Comparing Fig. 4-13 to Fig. 4-15, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected by the first channel 21, the second channel one 221 and the second channel three 223 are the same. The flow paths communicated by the second channel two 222 are different. Properly adjusting the rotation angle of the valve core 20 in the interval shown in FIG. 4-13 to FIG. 4-15 can make the second channel two 222 exist under the condition that other flow paths remain unchanged. Three modes, namely connecting the sixth interface 16 and the fifth interface 15, or connecting the sixth interface 16 and the ninth interface 19, or making the sixth interface 16 connect the fifth interface 15 and the ninth interface 19 at the same time.

As shown in Figure 4-16, in this flow channel mode, the flow paths of each flow channel of the valve device are: the second interface 12 → the first channel 21 → the fifth interface 15, the first interface 11 → the second channel 1 221→the eighth interface 18, the sixth interface 16→the second channel two 222→the seventh interface 17, the fourth interface 14→the second channel three 223→the third interface 13.

As shown in Figure 4-17, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the second interface 12 → the first channel 21 → the ninth interface 19, the first interface 11 → the second channel 1 221→the eighth interface 18, the sixth interface 16→the second channel two 222→the seventh interface 17, the fourth interface 14→the second channel three 223→the third interface 13.

As shown in Figure 4-18, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: the second interface 12 → the first channel 21 → the fifth interface 15 and the ninth interface 19, the first interface 11 → the second channel one 221 → the eighth interface 18 , the sixth interface 16 → the second channel two 222 → the seventh interface 17 , the fourth interface 14 → the second channel three 223 → the third interface 13 .

Comparing Fig. 4-16 to Fig. 4-18, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected to the three second channels are the same. The difference is that the flow paths connected to the first channel 21 are different. Adjusting the rotation angle of the valve core 20 in the interval shown in Fig. 4-16 to Fig. 4-18 can make the first channel 21 have three modes under the condition that the other flow paths remain unchanged, namely connecting the second port 12 and the first channel 21. The five ports 15 either connect the second port 12 and the ninth port 19 , or make the second port 12 communicate with the fifth port 15 and the ninth port 19 at the same time.

As shown in Figure 4-19, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: sixth interface 16 → first channel 21 → third interface 13, second interface 12 → second channel one 221→first interface 11, eighth interface 18→second channel two 222→seventh interface 17, fourth interface 14→second channel three 223→fifth interface 15.

As shown in Figure 4-20, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: sixth interface 16 → first channel 21 → third interface 13, second interface 12 → second channel one 221→first interface 11, eighth interface 18→second channel two 222→seventh interface 17, fourth interface 14→second channel three 223→ninth interface 19.

As shown in Figure 4-21, in this flow channel mode, the flow paths of each flow channel of the valve device are respectively: sixth interface 16 → first channel 21 → third interface 13, second interface 12 → second channel one 221→first interface 11, eighth interface 18→second channel two 222→seventh interface 17, fourth interface 14→second channel three 223→fifth interface 15 and ninth interface 19.

Comparing Fig. 4-19 to Fig. 4-21, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected with the first channel 21, the second channel one 221 and the second channel two 222 are the same. The flow paths communicated by the second channel three 223 are different. Properly adjusting the rotation angle of the valve core 20 in the interval shown in FIG. 4-19 to FIG. 4-21 can make the second channel three 223 exist under the condition that other flow paths remain unchanged. Three modes, namely connecting the fourth interface 14 and the fifth interface 15, or connecting the fourth interface 14 and the ninth interface 19, or making the fourth interface 14 connect the fifth interface 15 and the ninth interface 19 at the same time.

As shown in Figure 4-22, in this flow channel mode, the flow paths of each flow channel of the valve device are: the fourth interface 14 → the first channel 21 → the seventh interface 17, the second interface 12 → the second channel 1 221→third interface 13, first interface 11→second channel two 222→eighth interface 18, sixth interface 16→second channel three 223→fifth interface 15.

As shown in Figure 4-23, in this flow channel mode, the flow paths of each flow channel of the valve device are: the fourth interface 14 → the first channel 21 → the seventh interface 17, the second interface 12 → the second channel 1 221→third interface 13, first interface 11→second channel two 222→eighth interface 18, sixth interface 16→second channel three 223→ninth interface 19.

As shown in Figure 4-24, in this flow channel mode, the flow paths of each flow channel of the valve device are: the fourth interface 14 → the first channel 21 → the seventh interface 17, the second interface 12 → the second channel 1 221→third interface 13, first interface 11→second channel two 222→eighth interface 18, sixth interface 16→second channel three 223→fifth interface 15 and ninth interface 19.

Comparing Fig. 4-22 to Fig. 4-24, it can be seen that among the three flow channel modes, the flow paths of the flow channels connected with the first channel 21, the second channel one 221 and the second channel two 222 are the same. The flow paths communicated by the second channel three 223 are different. Properly adjusting the rotation angle of the valve core 20 in the interval shown in FIG. 4-22 to FIG. 4-24 can make the second channel three 223 exist under the condition that other flow paths remain unchanged. Three modes, namely connecting the sixth interface 16 and the fifth interface 15, or connecting the sixth interface 16 and the ninth interface 19, or making the sixth interface 16 connect the fifth interface 15 and the ninth interface 19 at the same time.

The 24 flow channel modes of the valve device shown in FIGS. 1 to 3 are described in detail above, and switching between the above 24 flow channel modes can be realized by driving the valve core 20 to rotate by the actuator. According to the above description, it can be simply understood that the valve device mainly has eight rotation intervals, and there are three flow channel modes in each rotation interval.

In the valve device in the embodiment shown in FIGS. 1-3 , each interface of the valve shell 10 is formed on the shell peripheral wall 101 , and each channel of the valve core 20 is a curved channel structure with openings at both ends passing through the core peripheral wall 201 . It can be understood that the ports of the valve housing 10 and the channels of the valve core 20 can also be set to other forms.

Referring to FIG. 5 , FIG. 5 is a schematic cross-sectional view of a valve device according to another embodiment of the present application. As shown in FIG. 5 , each interface of the valve housing 10 is represented by dotted lines. In this embodiment, the valve housing 10 includes a housing wall portion 102 that is perpendicular to the rotational center axis of the valve core 20 . The housing wall portion 102 of the valve housing 10 There are nine ports formed on it, and the arrangement of the nine ports is similar to that shown in FIG. 3, and they are also arranged on a circle around the rotation center of the valve core 20; The valve core 20 has a core wall part that fits and seals with the shell wall part 102, and each channel of the valve core 20 can pass through the core wall part, so that when the valve core 20 rotates relative to the valve shell 10, each channel of the valve core 20 can At least two ports of the valve housing 10 are communicated. Specifically, each channel can be in the form of a curved through groove running through the core wall. It can be understood that the opening of the curved through groove faces the shell wall 102 , so that during the rotation of the valve core 20 , it is convenient for the curved through groove to communicate with at least two interfaces. Of course, only both ends of the channel may pass through the core wall to form openings at both ends.

In the example shown in FIG. 5 , the number of channels, the channel form and the arrangement of the valve core 20 are consistent with the embodiment shown in FIG. 3 above. It can be seen in combination with FIG. 5 and FIG. 3 that the radial dimension of the valve housing 10 can be relatively reduced by this arrangement, which is beneficial to the miniaturized design of the valve device.

It can be understood that the valve device shown in FIG. 5 also has 24 flow channel modes like the valve device shown in FIG. 3 , which can be understood with reference to the aforementioned FIGS. 4-1 to 4-24 and will not be described in detail.

Of course, according to actual requirements or the structure allows, some of the ports of the valve shell 10 may also be partially formed on the peripheral wall of the shell, and partially formed on the shell wall. As long as the communication between the channel and the interface can be achieved, each channel of the valve core 20 may not penetrate through the core peripheral wall 201 .

In addition, in the above-mentioned embodiments, the first port 11 to the eighth port 18 of the valve housing 10 can be evenly arranged around the rotation center of the valve core 20, so that basically the valve core 20 is switched from one flow channel mode to another. The rotation angle of the track mode is the same, which is convenient for control.

Please refer to FIG. 6 . In the embodiment shown in FIG. 6 , the type, number and arrangement of channels of the valve core 20 are the same as those shown in the embodiments shown in FIGS. 3 and 5 . They are the first interface 11 , the second interface 12 , the third interface 13 , the fourth interface 14 , the fifth interface 15 , the sixth interface 16 , the seventh interface 17 and the eighth interface 18 . Compared with the valve device shown in FIG. 3 and FIG. 5 , the valve housing 10 in the embodiment shown in FIG. 6 does not have a ninth interface, so under the condition that the structure of the valve core 20 is the same, there are 8 flow channel modes of the valve device. , these 8 modes are shown in Figure 7-1 to Figure 7-8, the rotation of the valve core 20 makes the valve casing 10 connected to the channel of the valve core 20 different, so the flow channel patterns formed are different, and each flow path is different. The flow path conditions in the channel mode are understood with reference to FIGS. 7-1 to 7-8, and will not be described in detail. In this embodiment, the eight ports of the valve shell 10 are also evenly arranged on a circumference around the rotation center of the valve core 20, so that each time the valve core 20 rotates through the same angle, a flow channel mode can be switched. Of course, , in the actual setting, it can also be unevenly arranged, which is determined according to the specific requirements, and the channels of the valve core 20 can be matched with the setting.

Please refer to FIG. 8. In the embodiment shown in FIG. 8, the valve device includes two valve parts connected in series. The structure of the first valve part is the same as that of the valve device shown in FIG. 6, and the second valve part is a proportional three-way valve. 40. It can be understood that the embodiment shown in FIG. 8 is a proportional three-way valve connected in series on the basis of the embodiment shown in FIG. 6 .

In FIG. 8 , the proportional three-way valve is connected in series to the fifth port 15 of the valve housing 10 , and the fifth port 15 is communicated with the first port 41 of the proportional three-way valve 40 . After the eight ports 18 are communicated with the fifth port 15 through the first passage 21, depending on the adjustment state of the proportional three-way valve, the fifth port 15 can be communicated with the second port 42 of the proportional three-way valve 40, that is, the fifth port 15 is connected to the second port 42 of the proportional three-way valve 40. A flow channel is formed between the second port 42 , which can also be communicated with the third port 43 of the proportional three-way valve 40 , that is, a flow channel is formed between the fifth port 15 and the third port 43 , and can also be connected with the second port 42 at the same time. It communicates with the third port 43 . By comparison, it can be seen that the valve device shown in Figure 8 actually has the same flow channel pattern as the valve device shown in Figure 3, that is, there are 24 flow channel patterns. The 24 flow channel patterns of the valve arrangement of FIG. 8 are no longer shown.

The above three embodiments are mainly used to introduce the specific structure of the valve device. It can be understood that in the actual setting, appropriate deformations can be made on the basis of the above-mentioned embodiments according to the application requirements. For example, in the example shown in FIG. 3, The ninth port 19 can be arranged on the side of any one of the first port 11 to the eighth port 18, and is not limited to the fifth port 15. Similarly, in the example shown in FIG. 8, the proportional three-way valve 40 can be connected in series. Any one of the first interface 11 to the eighth interface 18 is not limited to the fifth interface 15; for another example, if the structure allows, in the example shown in FIG. An interface similar to the ninth interface is set on the side of each, so that more flow channel patterns are formed.

On the other hand, an embodiment of the present application provides a thermal management system, which includes a plurality of circulation loops, and the plurality of circulation loops share a valve device, and the valve device is the valve device described in the above embodiments. The thermal management system realizes the connection of multiple circulation loops through a valve device, and the pipeline interfaces are centralized, which can shorten the pipeline connection distance, simplify the pipeline layout, and is conducive to the miniaturization of the system. In addition, the valve assembly has a variety of modes to meet the needs of thermal management systems.

In another aspect, the embodiments of the present application provide an electric vehicle, including the above thermal management system, which can switch between different modes according to different thermal management requirements, which is beneficial to reduce the energy consumption and cost of thermal management.

Specific examples are used herein to illustrate the principles and implementations of the present application, and the descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims (13)

1. A valve device, characterized in that it comprises a valve housing and a valve core; the valve core can rotate relative to the valve housing; the valve shell has a plurality of ports, and the plurality of ports are arranged around the rotation center of the valve core; The valve core has multiple channels, the multiple channels are not communicated with each other, and the projections of the multiple channels in a plane perpendicular to the rotation center axis of the valve core do not cross each other; The channels are used to communicate with at least two ports of the valve housing. 2 . The valve device according to claim 1 , wherein the plurality of passages of the valve core are in the same plane. 3 . 3 . The valve device according to claim 2 , wherein the plurality of passages comprise a first passage and a second passage, and the inlet end of the first passage communicates with the outlet end of the first passage. 4 . The communicating ports are not adjacent, and the ports communicating with the inlet end of the second passage are adjacent to the ports communicating with the outlet end of the second passage. 4. The valve device according to claim 3, wherein one side of the first channel is provided with one of the second channels, and the other side is provided with at least one of the second channels. 5. The valve device according to claim 4, wherein the other side of the first channel is provided with two second channels. 6 . The valve device according to claim 1 , wherein the valve casing has a casing wall portion, and the casing wall portion is perpendicular to the rotation center axis of the valve core, and the plurality of At least part of the interface is provided on the shell wall. 7 . The valve device according to claim 1 , wherein the valve core has a cylindrical structure, and the plurality of passages comprise curved passages penetrating the peripheral wall of the valve core or passing through the valve. 8 . The curved channel of the end wall of the core. 8. The valve device of any one of claims 1-5, wherein the plurality of ports includes no more than nine ports, and the plurality of channels includes no more than four channels. 9 . The valve device according to claim 8 , wherein the plurality of ports comprises nine ports, of which eight ports are evenly arranged around the rotation center of the valve core, and the ninth port is located at the eighth port. 10 . next to one of the ports. 10 . The valve device according to claim 8 , wherein the plurality of ports comprises eight ports, and the eight ports are evenly arranged around the rotation center of the valve core. 11 . 11. The valve arrangement of claim 10, further comprising a proportional three-way valve in series with one of the eight ports. 12. A thermal management system, comprising a plurality of circulation loops, characterized in that, the plurality of circulation loops share a valve device, and the valve device is the valve device according to any one of claims 1-11. 13. An electric vehicle, comprising the thermal management system of claim 12.

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