Fluid management devices and thermal management systems

Abstract

The fluid management device and thermal management system of the present application include a connector, a fluid control part and a sensing part. The connector has a first accommodating cavity for accommodating the fluid control part, and the connector has a second accommodating cavity for accommodating the sensing part. The opening of the first accommodating cavity is located on the first side, and the opening of the second accommodating cavity is located on the second side. At least part of the wall of the first side is perpendicular to the first surface, and the projection of the sub-channel of the connector on the first surface does not overlap. In this way, the volume of the fluid management device is relatively small, and the sub-channel is located in the connector, which is also conducive to preventing leakage.

Description

Technical Field

[0001] The present application relates to the field of fluid management, and in particular to a fluid management device and a thermal management system. Background Art

[0002] The thermal management system includes fluid control components, sensors and other components, which are usually connected through multiple pipes. As the complexity of the system increases, the number of components and connection points increases, resulting in an increased risk of leakage at the connection points of the thermal management system and a relatively large space occupation. Summary of the Invention

[0003] The purpose of the present application is to provide a fluid management device and a thermal management system, which are conducive to making the structure of the fluid management device and the thermal management system compact, and also help reduce leakage at the connection.

[0004] One embodiment of the present application adopts the following technical solution: a fluid management device, comprising a connecting member, a fluid control unit, and a sensor unit, wherein the connecting member comprises a first accommodating portion and a second accommodating portion, wherein the first accommodating portion has a first accommodating cavity, wherein at least a portion of the fluid control unit is located in the first accommodating cavity, wherein the fluid control unit is fixedly connected or position-limitedly connected to the connecting member, and the second accommodating portion has a second accommodating cavity, wherein at least a portion of the sensor unit is located in the second accommodating cavity, wherein the sensor unit is fixedly connected or position-limitedly connected to the connecting member;

[0005] The connecting member has a communication channel, the communication channel has an opening in the wall of the first accommodating portion, the sensing element of the sensing portion is located in the communication channel, or the fluid management device has a communication cavity, the communication cavity is in communication with the communication channel, and the sensing element of the sensing portion is located in the communication cavity;

[0006] The connecting member includes a first side portion and a second side portion, the first accommodating cavity has an opening on the first side portion, and the second accommodating cavity has an opening on the second side portion; a first surface is defined, the first surface is perpendicular to the axis of the second accommodating portion, at least part of the wall of the first side portion is perpendicular to the first surface, and the connecting channel includes several sub-channels, and the projections of the sub-channels on the first surface do not overlap.

[0007] Another embodiment of the present application adopts the following technical solution: a thermal management system, including a compressor, a throttling element, a fourth heat exchanger and a fluid management device, the fluid management device is the above-mentioned fluid management device, the fluid management device includes a first interface, a second interface, a third interface and a fourth interface, the outlet of the compressor is connected to the third interface, the fourth interface is connected to the second interface through the throttling unit and the fourth heat exchanger, and the first interface is connected to the inlet of the compressor.

[0008] The fluid management device and thermal management system of the present application include a connector, a fluid control part and a sensing part. The connector has a first accommodating cavity for accommodating the fluid control part, and the connector has a second accommodating cavity for accommodating the sensing part. The opening of the first accommodating cavity is located on the first side, and the opening of the second accommodating cavity is located on the second side. At least part of the wall of the first side is perpendicular to the first surface, and the projection of the sub-channel of the connector on the first surface does not overlap. In this way, the volume of the fluid management device is relatively small, and the sub-channel is located in the connector, which is also conducive to preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of the three-dimensional structure of the first embodiment of the fluid management device of the present application from one perspective;

[0010] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the fluid management device from another perspective;

[0011] Figure 3 yes Figure 1 A schematic diagram of an exploded structure of a fluid management device from one perspective;

[0012] Figure 4 yes Figure 1 A schematic diagram of an exploded structure of a fluid management device from another perspective;

[0013] Figure 5 yes Figure 1 A schematic diagram of the three-dimensional structure of the first plate body of the middle connecting member from one perspective;

[0014] Figure 6 yes Figure 1 A schematic diagram of the three-dimensional structure of the first plate body of the middle connecting member from another perspective;

[0015] Figure 7 is a schematic diagram of a three-dimensional structure of a second embodiment of the fluid management device of the present application from one perspective;

[0016] Figure 8 yes Figure 7 An exploded structural diagram of the fluid management device;

[0017] Figure 9 yes Figure 7 a perspective schematic diagram of a fluid management device;

[0018] Figure 10 It is a connection diagram of a thermal management system. DETAILED DESCRIPTION

[0019] The fluid management device of the present application can be applied to a vehicle thermal management system, where the vehicle includes a new energy vehicle, and the fluid is a refrigerant, including R134a, CO2, or other forms of refrigerant. The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] See also Figures 1-9One embodiment of the present application provides a fluid management device 10, which includes a connector 11, a fluid control unit 12 and a sensor unit 13. The connector 11 includes a first accommodating unit 1111 and a second accommodating unit 1122. The first accommodating unit 1111 has a first accommodating cavity 1111', at least part of the fluid control unit 12 is located in the first accommodating cavity 1111', the fluid control unit 12 is fixedly connected or position-limited to the connector 11, the second accommodating unit 1122 has a second accommodating cavity 1122', at least part of the sensor unit 13 is located in the second accommodating cavity 1122', and the sensor unit 13 is fixedly connected or position-limited to the connector 11. The connecting member 11 has a connecting channel 1100, and the connecting channel 1100 has an opening 1110 in the wall of the first accommodating portion 1111. The sensing element of the sensing portion 13 is used to sense the temperature and / or pressure or other parameters of the fluid in the connecting channel 1100. In one embodiment, the sensing element of the sensing portion 13 can be located in the connecting channel 1100. In addition, the fluid management device 10 can also have a connecting cavity, which is connected to the connecting channel 1100. The sensing element of the sensing portion 13 is located in the connecting cavity. The connecting cavity can be located in the connecting member 11 or in the sensing portion 13, and will not be described in detail. Connector 11 includes a first side portion 1113 and a second side portion 1114. A first accommodating cavity 1111' has an opening in first side portion 1113, and a second accommodating cavity 1122' has an opening in the wall of second side portion 1114. A first surface 1001 is defined, and first surface 1001 is perpendicular to the axis of second accommodating portion 1122. At least a portion of the wall of first side portion 1113 is perpendicular to first surface 1001. Connecting channel 1100 includes a plurality of sub-channels. Along the axis of second accommodating portion 1122, the projections of the sub-channels on first surface 1001 do not overlap, or in other words, the sub-channels do not intersect. Thus, connector 11 is relatively flat in a direction perpendicular to the axis of second accommodating portion 1122, facilitating design and processing. In this embodiment, the connection method includes welding, bonding, bolting, or other connection methods. "Perpendicular" herein includes an angle range between 80° and 100°, and "parallel" herein includes an angle range between -10° and 10°. The connector 11 has a first accommodating cavity 1111' for accommodating the fluid control part 12, and the connector 11 has a second accommodating cavity 1122' for accommodating the sensing part 13. The opening of the first accommodating cavity 1111' is located on the first side portion 1113, and the opening of the second accommodating cavity 1122' is located on the second side portion 1114. At least part of the wall of the first side portion 1113 is perpendicular to the first surface 1001, and the projections of the sub-channels located in the connector 11 on the first surface 1001 do not overlap. In this way, the volume of the fluid management device 10 is relatively small, and the sub-channels are located in the connector 11, which is also conducive to preventing leakage.

[0021] See also Figure 4-Figure 8The connecting member 11 includes at least two plates, which are stacked and adjacent plates are fixed and sealed together. At least one of the adjacent plates is provided with at least one connecting channel portion 110, and the adjacent plates form a connecting channel 1100 at the connecting channel portion 110. In this embodiment, the connecting member 11 includes a first plate 111 and a second plate 112. The first plate 111 and the second plate 112 are the two outermost plates of the connecting member 11, wherein the first side portion 1113 and the second side portion 1114 are located on the first plate 111. It can be seen that the fluid control portion 12 and the sensing portion 13 are fixedly connected or limit-connected to the first plate 111.

[0022] The number of sensing parts 13 is greater than or equal to two, and the connecting member 11 has a second accommodating cavity 112 corresponding to each sensing part 13. In this embodiment, the number of sensing parts 13 is four, that is, the sensing part 13 includes a first sensing part 131, a second sensing part 132, a third sensing part 133 and a fourth sensing part 134. The fluid management device 10 includes a first housing 141, a first circuit board 142, and a first connector 143. The first housing 141 is fixedly connected or positionally engaged with the connector 11. The first circuit board 142 is located within the first housing 141 and is fixedly connected or positionally engaged with the first housing 141 or the connector 11. The first circuit board 142 has a surface facing the second side portion 1114. Each sensor 13 is electrically and / or signal-connected to the first circuit board 142. The housing of the first connector 143 is fixedly connected or positionally engaged with the first housing 141 or the connector 11, or is an integral structure. The pins of the first connector 143 are electrically and / or signal-connected to the first circuit board 142. Signals from the multiple sensors 13 can be collected by the circuit board and then transmitted to a host computer or controller via the first connector 143. This reduces the number of connectors and facilitates installation of the fluid management device 10. In other embodiments, the first circuit board 142 may be partially located in the first housing 141 and partially located within a recess formed by the connector 11. This will not be described in detail.

[0023] See also Figure 3The number of fluid control parts 12 is greater than or equal to two, the connector 11 has a first accommodating cavity 1111' corresponding to each fluid control part 12, the fluid management device 10 includes a second shell 151, a second circuit board 152 and a second connector 153, the second shell 151 is fixedly connected or limit-connected to the connector 11, at least part of the second circuit board 152 is located in the second shell 151, the second circuit board 152 has a surface facing the first side portion 1113, each fluid control part 12 is electrically and / or signal-connected to the second circuit board 152, the shell of the second connector 153 is fixedly connected or limit-connected to the second shell 151 or is an integrated structure, and the pins of the second connector 153 are electrically and / or signal-connected to the second circuit board 152. Multiple fluid control parts 12 are all electrically connected and / or signal-connected to the second circuit board 152, and the circuit board is electrically connected and / or signal-connected to the pins of the second connector 153. The second connector 153 is used to electrically connect and / or signal-connect to the host computer or controller. This can reduce the number of second connectors 153, reduce the number of circuit boards, and facilitate the installation of the fluid management device 10.

[0024] See also Figure 3 、 Figure 5 and Figure 9In one specific embodiment, the fluid control unit 12 includes a valve unit 121 and a throttling unit 122. The first side portion 1113 includes a first sub-portion 1115 and a second sub-portion 1116. The opening of the first accommodating cavity 1111' corresponding to the valve unit 121 is located in the first sub-portion 1115, and the opening of the first accommodating cavity 1111' corresponding to the throttling unit 122 is located in the second sub-portion 1116. Disposing the valve unit 121 and the throttling unit 122 in different areas, without intersecting the throttling unit 122 and the valve unit 121, facilitates the miniaturization and installation of the fluid management device 10. The valve unit 121 can be a solenoid valve, a ball valve, or another type of on-off valve, while the throttling unit 122 can be an electronic expansion valve, a thermal expansion valve, or another type of throttling valve. In this embodiment, the valve unit 121 is a solenoid valve, and the throttling unit 122 is an electronic expansion valve. In a more specific embodiment, the valve unit 121 includes a first valve unit 1211, a second valve unit 1212, and a third valve unit 1213. The fluid management device 10 is provided with a first accommodating cavity 1111' corresponding to each valve unit, and each valve unit is fixedly connected or position-limitedly connected to the connector 11. The throttling unit 122 includes a first throttling unit 1221 and a second throttling unit 1222. The fluid management device 10 is provided with a first accommodating cavity 1111' corresponding to each throttling unit, and each throttling unit is fixedly connected or position-limitedly connected to the connector 11. A first direction is defined on the first surface, which is perpendicular to the axis of the first accommodating cavity 1111'. Along the first direction, the first throttling unit 1221 is closer to the first sub-portion 1115 than the second throttling unit 1222. The third valve unit 1213 is located between the first valve unit 1211 and the second valve unit 1212, and the second valve unit 1212 is closer to the second sub-portion 1116 than the third valve unit 1213. Of course, in other embodiments, the number of the fluid control parts 12 may be two or more, which will not be described in detail.

[0025] See also Figure 4The fluid management device 10 further includes a heat exchange portion 16, which is fixedly or positionally connected to the second side portion 1114. The heat exchange portion 16 includes a flow channel, which has an opening facing the second side portion 1114. The communication channel 1100 is in communication with the flow channel. The heat exchange portion 16 includes a plurality of stacked plates, with the plates stacked perpendicular to the first surface 1001. Along the axis of the first accommodating portion 1111, the second accommodating portion 1122 is closer to the first accommodating portion 1111 than the heat exchange portion 16. In this embodiment, the heat exchange portion 16 is a plate heat exchanger, which includes a plurality of stacked plates. The flow channel of the heat exchange portion 16 includes a first flow channel and a second flow channel. When the heat exchange portion 16 is working, the fluid in the first flow channel and the fluid in the second flow channel can exchange heat in the heat exchange portion 16. The fluid in the first flow channel and the fluid in the second flow channel can be the same medium or different media. In this embodiment, the fluid in the first flow channel is a refrigerant, and the fluid in the second flow channel is a coolant. The first flow channel includes a first channel, a second channel and an inter-plate channel. The first channel is connected to the second channel through the inter-plate channel. Specifically, the heat exchange portion 16 includes a first heat exchanger 161, a second heat exchanger 162 and a third heat exchanger 163. Along the first direction, the third heat exchanger 163 is located on one side of the second heat exchanger 162, and the first heat exchanger 161 is located on the other side of the second heat exchanger 162. The third heat exchanger 163 and the first heat exchanger 161 are located on different sides of the second heat exchanger 162; along the axial direction of the first accommodating portion 1111, the third heat exchanger 163 is closer to the second sub-portion 1116 than the first heat exchanger 161, and the first heat exchanger 161 is closer to the second sub-portion 1116 than the third heat exchanger 163.

[0026] See also Figure 4 、 Figure 6-Figure 9The connecting channel 1100 of the connecting member 11 includes a first sub-channel 1101, a second sub-channel 1102, a third sub-channel 1103, a fourth sub-channel 1104, a fifth sub-channel 1105, a sixth sub-channel 1106 and a seventh sub-channel 1107. The first sub-channel 1101 has an opening 1101' facing the first flow channel of the first heat exchanger 161 on the second side 1114. Specifically, the first sub-channel 1101 has an opening facing the first channel of the first heat exchanger 161 on the second side 1114. The first sub-channel 1101 is connected to the first channel of the first heat exchanger 161. The second sub-channel 1102 has an opening 1102' facing the first flow channel of the first heat exchanger 161 on the second side 1114. Specifically, The second sub-channel 1102 has an opening on the second side 1114 facing the second channel of the first heat exchanger 161, and the second sub-channel 1102 is connected with the second channel of the first heat exchanger 161, so that the first sub-channel 1101 can be connected with the second sub-channel 1102 through the first flow channel of the first heat exchanger 161; the second sub-channel 1102 has an opening in the wall of the accommodating portion accommodating the third valve unit 1213, and the second sub-channel 1102 has an opening in the wall of the accommodating portion accommodating the second valve unit 1212. The second valve unit 1212 can make the second sub-channel 1102 connected or disconnected with the third sub-channel 1103, and the third valve unit 1213 can make the second sub-channel 1102 connected or disconnected with the fourth sub-channel 1104. The third sub-channel 1103 has an opening in the wall of the accommodating portion for accommodating the first throttling unit 1221, and the third sub-channel 1103 has an opening in the wall of the accommodating portion for accommodating the second throttling unit 1222. The third sub-channel 1103 can be communicated with the fifth sub-channel 1105 through the first throttling unit 1221. The third sub-channel 1103 can be communicated with the sixth sub-channel 1106 through the second throttling unit 1222. The fifth sub-channel 1105 has an opening 1105' on the second side portion 1114 facing the first flow channel of the third heat exchanger 163. Specifically, the fifth sub-channel 1105 has an opening on the second side portion 1114 facing the first channel of the third heat exchanger 163. The sub-channel 1105 is connected to the first flow channel of the third heat exchanger 163, and the sixth sub-channel 1106 has an opening 1106' of the first flow channel facing the second heat exchanger 162 on the second side 1114. Specifically, the sixth sub-channel 1106 has an opening of the first channel facing the second heat exchanger 162 on the second side 1114, and the sixth sub-channel 1106 is connected to the first flow channel of the second heat exchanger 162; in this way, the fluid flowing out of the second valve unit 1212 can enter the third heat exchanger 163 through the first throttling unit 1221, and / or, the fluid flowing out of the second valve unit 1212 can enter the second heat exchanger 162 through the second throttling unit 1222.In addition, the fluid management device 10 also includes a one-way component 1214, which is located in the connecting member 11. The one-way component 1214 is fixedly connected or limit-connected to the connecting member 11, and the one-way component 1214 can make the sixth sub-channel 1106 connect to the third sub-channel 1103 in one direction; the fourth sub-channel 1104 has an opening of the first flow channel facing the second heat exchanger 162 on the second side 1114, specifically, the fourth sub-channel 1104 has an opening of the second channel facing the second heat exchanger 162 on the second side 1114, and the fourth sub-channel 1104 is connected to the first flow channel of the second heat exchanger 162, so that the fluid flowing out of the third valve unit 1213 can enter the second heat exchanger 162. The fourth sub-channel 1104 has an opening in the wall of the accommodating portion accommodating the first valve unit 1211. The first valve unit 1211 can connect and disconnect the fourth sub-channel 1104 with the seventh sub-channel 1107. The seventh sub-channel 1107 has an opening 1107' facing the first flow channel of the third heat exchanger 163 on the second side 1114. Specifically, the seventh sub-channel 1107 has an opening facing the first channel of the third heat exchanger 163 on the second side 1114, and the seventh sub-channel 1107 is connected with the first flow channel of the third heat exchanger 163.

[0027] See also Figure 2 and Figure 4 、 Figure 9 The fluid management device 10 has a first interface 101, a second interface 102, a third interface 103 and a fourth interface 104. The first interface 101, the second interface 102, the third interface 103 and the fourth interface 104 are located on the second plate body 112 or on a tube or block fixedly connected or positionally connected to the second plate body 112. The first interface 101 and the second interface 102 are connected to the seventh sub-channel 1107, the third interface 103 is connected to the first sub-channel 1101, and the fourth interface 104 is connected to the third sub-channel 1103. The sensing part 13 includes a first sensing part 131, a second sensing part 132, a third sensing part 133 and a fourth sensing part 134. The accommodating cavity or connecting cavity accommodating the first sensing part 131 is connected to the first sub-channel 1101, the accommodating cavity or connecting cavity accommodating the second sensing part 132 is connected to the fourth sub-channel 1104, the accommodating cavity or connecting cavity accommodating the third sensing part 133 is connected to the third sub-channel 1103, and the accommodating cavity or connecting cavity accommodating the fourth sensing part 134 is connected to the seventh sub-channel 1107.

[0028] A first cross-section is defined, and the first cross-section is perpendicular to the extension direction of the connecting channel 1100. The first cross-section intersects with the connecting channel 1100 to form at least one flow cross-section. The area of ​​the flow cross-section remains unchanged. The flow cross-section includes width and depth. The depth of the flow cross-section gradually increases along the flow direction of the fluid in the connecting channel 1100, and the width of the flow cross-section decreases along the flow direction of the fluid in the connecting channel 1100. This is beneficial to reducing flow resistance and reducing the volume of the fluid management device 10.

[0029] See also Figures 1-10 One embodiment of the present application also provides a thermal management system that can be applied to a vehicle. Specifically, the thermal management system includes a compressor 1, a throttling element 2, a fourth heat exchanger 3, and a fluid management device 10. The throttling element 2 is located upstream of the fourth heat exchanger 3 and is used to throttle and reduce the pressure of the fluid flowing through the fourth heat exchanger 3. The fourth heat exchanger 3 can be a microchannel heat exchanger or a plate heat exchanger. The fluid management device 10 includes a first interface 101, a second interface 102, a third interface 103, and a fourth interface 104. The outlet of the compressor 1 is connected to the third interface 103. The fourth interface 104 is connected to the second interface 102 via the throttling element and the first heat exchanger 161. The first interface 101 is connected to the inlet of the compressor. The fluid management device 10 includes a first heat exchanger 161, a second heat exchanger 162, and a third heat exchanger 163. The first heat exchanger 161, the second heat exchanger 162, and the third heat exchanger 163 are all plate heat exchangers and each of the heat exchangers further has a second flow channel. The fluid management device 10 further includes a first sensing unit 131, a second sensing unit 132, a third sensing unit 133, and a fourth sensing unit 134. The first sensing unit 131 is a temperature sensor for measuring the temperature at the compressor outlet. The second sensing unit 132 is a temperature sensor for measuring the subcooling of the first heat exchanger 161 or the superheating of the second heat exchanger 162. The third sensing unit 133 is a temperature-pressure sensor for measuring the superheating of the third heat exchanger 163. The fourth sensing unit 134 is a temperature-pressure sensor for measuring the subcooling of the first heat exchanger 161 or the superheating of the second heat exchanger 162.

[0030] In the heating mode of the thermal management system, the high-temperature and high-pressure refrigerant discharged from the compressor 1 enters the first heat exchanger 161 through the third interface 103 and the first sub-channel 1101, and then releases heat in the first heat exchanger 161. The refrigerant flowing out of the first heat exchanger 161 enters the second sub-channel 1102, the third valve unit 1213 is closed, and the second valve unit 1212 is opened, that is, the refrigerant enters the third sub-channel 1103 through the second valve unit 1212, the second throttling unit 1222 is opened, the first throttling unit 1221 and the throttling element are closed, and the refrigerant enters the sixth sub-channel 1106 after throttling and reducing the pressure through the second throttling unit 1222. The refrigerant evaporates and absorbs heat in the third heat exchanger 163, and then the refrigerant enters the compressor through the first interface 101 through the fourth sub-channel 1104 and the first valve unit 1211. In other modes of the thermal management system, the first throttling unit 1221 and / or the throttling element may also be turned on, and the refrigerant may also evaporate and absorb heat in the third heat exchanger 163 and / or the fourth heat exchanger.

[0031] In the cooling mode of the thermal management system, the high-temperature and high-pressure refrigerant discharged from the compressor 1 enters the first heat exchanger 161 through the third interface 103 and the first sub-channel 1101. The refrigerant does not exchange heat or exchanges a small amount of heat in the first heat exchanger 161. The refrigerant flowing out of the first heat exchanger 161 enters the second sub-channel 1102, the first valve unit 1211 is closed, the second valve unit 1212 is closed, and the third valve unit 1213 is opened, that is, the refrigerant enters the fourth sub-channel 1104 through the third valve unit 1213, and the system The refrigerant releases heat in the second heat exchanger 162, then enters the third sub-channel 1103 through the sixth sub-channel 1106 and the one-way component 1214, and finally flows out of the fluid management device 10 through the fourth port 104. At this time, the first throttling unit 1221 and the second throttling unit 1222 are closed, and the throttling element 2 is opened. The refrigerant evaporates and absorbs heat in the fourth heat exchanger 3. The refrigerant flowing out of the fourth heat exchanger 3 enters the seventh sub-channel 1107 through the second port 102, and then enters the compressor through the first port 101. In other modes of the thermal management system, the first throttling unit 1221 can also be opened, in which case the refrigerant can evaporate and absorb heat in the third heat exchanger 163.

[0032] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fluid management device, comprising a connector, a fluid control unit, and a sensor unit, the connector comprising a first accommodating portion and a second accommodating portion, the first accommodating portion having a first accommodating cavity, at least a portion of the fluid control unit being located in the first accommodating cavity, the fluid control unit being fixedly connected or position-limitedly connected to the connector, the second accommodating portion having a second accommodating cavity, at least a portion of the sensor unit being located in the second accommodating cavity, the sensor unit being fixedly connected or position-limitedly connected to the connector, the number of the sensors being greater than or equal to two, and the connector having one second accommodating cavity corresponding to each sensor unit; The connecting member has a communication channel, the communication channel has an opening in the wall of the first accommodating portion, the sensing element of the sensing portion is located in the communication channel, or the fluid management device has a communication cavity, the communication cavity is in communication with the communication channel, and the sensing element of the sensing portion is located in the communication cavity; The connecting member includes a first side portion and a second side portion, the first accommodating cavity has an opening on the first side portion, and the second accommodating cavity has an opening on the second side portion; a first surface is defined, the first surface is perpendicular to the axis of the second accommodating portion, at least part of the wall of the first side portion is perpendicular to the first surface, and the connecting channel includes several sub-channels, and the projections of the sub-channels on the first surface do not overlap.

2. The fluid management device according to claim 1, characterized in that The fluid management device includes a first shell, a first circuit board and a first connector. The first shell is fixedly connected or positionally connected to the connector. At least a portion of the first circuit board is located within the first shell. The first circuit board has a surface facing the second side portion. Each of the sensing parts is electrically and / or signal-connected to the first circuit board. The shell of the first connector is fixedly connected or positionally connected or has an integral structure with the first shell. The pins of the first connector are electrically and / or signal-connected to the first circuit board.

3. The fluid management device according to claim 1 or 2, characterized in that: The number of the fluid control parts is greater than or equal to two, the connecting member has a first accommodating cavity corresponding to each fluid control part, the fluid management device includes a second shell, a second circuit board, and a second connector, the second shell is fixedly connected or positionally connected to the connecting member, at least a portion of the second circuit board is located within the second shell, the second circuit board has a surface facing the first side portion, each of the fluid control parts is electrically and / or signal-connected to the second circuit board, the shell of the second connector is fixedly connected or positionally connected to the second shell, or is an integral structure, and the pins of the second connector are electrically and / or signal-connected to the second circuit board.

4. The fluid management device according to claim 3, characterized in that The first side portion includes a first sub-portion and a second sub-portion, the fluid control portion includes a valve unit and a throttling unit, the opening of the first accommodating cavity corresponding to the valve unit is located in the first sub-portion, and the opening of the first accommodating cavity corresponding to the throttling unit is located in the second sub-portion; The valve unit includes a first valve unit, a second valve unit, and a third valve unit. The throttling unit includes a first throttling unit and a second throttling unit. A first direction is defined on the first surface. The first direction is perpendicular to the axial direction of the first accommodating chamber. Along the first direction, the first throttling unit is closer to the first sub-section than the second throttling unit. The third valve unit is located between the first valve unit and the second valve unit. The second valve unit is closer to the second sub-section than the third valve unit.

5. The fluid management device according to claim 1, 2 or 4, characterized in that: The fluid management device includes a heat exchange portion, the heat exchange portion is fixedly connected or positionally connected to the second side portion, the heat exchange portion includes a flow channel, the flow channel has an opening facing the second side portion, the communication channel is connected to the flow channel, and the heat exchange portion includes a plurality of stacked plates, the stacking direction of the plates is perpendicular to the first surface; Along the axial direction of the first accommodation portion, the second accommodation portion is closer to the first accommodation portion than the heat exchange portion.

6. The fluid management device according to claim 5, characterized in that The first side portion includes a first sub-portion and a second sub-portion, the fluid control portion includes a valve unit and a throttling unit, the opening of the first accommodating cavity corresponding to the valve unit is located in the first sub-portion, and the opening of the first accommodating cavity corresponding to the throttling unit is located in the second sub-portion; The heat exchange portion includes a first heat exchanger, a second heat exchanger and a third heat exchanger. Along the first direction, the third heat exchanger is located on one side of the second heat exchanger, the first heat exchanger is located on the other side of the second heat exchanger, and the third heat exchanger and the first heat exchanger are located on different sides of the second heat exchanger; along the axial direction of the first accommodating portion, the third heat exchanger is closer to the second sub-portion than the first heat exchanger, and the first heat exchanger is closer to the second sub-portion than the third heat exchanger.

7. The fluid management device according to claim 6, characterized in that The heat exchange portion includes a first heat exchanger, a second heat exchanger, and a third heat exchanger; the valve unit includes a first valve unit, a second valve unit, and a third valve unit; and the throttling unit includes a first throttling unit and a second throttling unit; The communication channel includes a first sub-channel, a second sub-channel, a third sub-channel, a fourth sub-channel, a fifth sub-channel, a sixth sub-channel, and a seventh sub-channel, the first sub-channel having an opening at the second side portion facing the first flow channel of the first heat exchanger, the second sub-channel having an opening at the second side portion facing the first flow channel of the first heat exchanger, the second sub-channel having an opening at a wall of a housing portion accommodating the third valve unit, the second sub-channel having an opening at a wall of a housing portion accommodating the second valve unit, the second valve unit being capable of connecting and disconnecting the second sub-channel from the third sub-channel, and the third valve unit being capable of connecting and disconnecting the second sub-channel from the fourth sub-channel; The third sub-channel has an opening in the wall of the housing portion accommodating the first throttling unit, and the third sub-channel has an opening in the wall of the housing portion accommodating the second throttling unit. The third sub-channel can communicate with the fifth sub-channel through the first throttling unit, and the third sub-channel can communicate with the sixth sub-channel through the second throttling unit. The fifth sub-channel has an opening on the second side portion facing the first flow channel of the third heat exchanger, and the sixth sub-channel has an opening on the second side portion facing the first flow channel of the second heat exchanger. The fluid management device further includes a one-way component, which can enable the sixth sub-channel to be connected to the third sub-channel in a one-way manner. The fourth sub-channel has an opening on the second side facing the first flow channel of the second heat exchanger, the fourth sub-channel has an opening on the wall of the accommodating portion accommodating the first valve unit, the first valve unit can connect and disconnect the fourth sub-channel with the seventh sub-channel, and the seventh sub-channel has an opening on the second side facing the first flow channel of the third heat exchanger.

8. The fluid management device according to claim 7, characterized in that The connecting member includes at least two plates, the plates are stacked, adjacent plates are fixed and sealed, at least one of the adjacent plates is provided with at least one communication channel portion, and the adjacent plates form the communication channel at the communication channel portion; The connecting member includes a first plate body and a second plate body, the first side portion and the second side portion are located on the first plate body, the fluid management device has a first interface, a second interface, a third interface and a fourth interface, the first interface, the second interface, the third interface and the fourth interface are located on the second plate body or on a tube or block fixedly connected or limit-connected to the second plate body, the first interface and the second interface are connected to the seventh sub-channel, the third interface is connected to the first sub-channel, and the fourth interface is connected to the third sub-channel.

9. The fluid management device according to claim 8, characterized in that The sensing part includes a first sensing part, a second sensing part, a third sensing part and a fourth sensing part. The accommodating cavity or connecting cavity accommodating the first sensing part is connected to the first sub-channel, the accommodating cavity or connecting cavity accommodating the second sensing part is connected to the fourth sub-channel, the accommodating cavity or connecting cavity accommodating the third sensing part is connected to the third sub-channel, and the accommodating cavity or connecting cavity accommodating the fourth sensing part is connected to the seventh sub-channel.

10. The fluid management device according to claim 9, characterized in that A first cross-section is defined, wherein the first cross-section is perpendicular to the extension direction of the connecting channel, and the first cross-section intersects with the connecting channel to form at least one flow cross-section. The area of ​​the flow cross-section remains unchanged, and the flow cross-section includes a width and a depth. The depth of the flow cross-section gradually increases along the flow direction of the fluid in the connecting channel, and the width of the flow cross-section decreases along the flow direction of the fluid in the connecting channel.

11. The fluid management device according to claim 3, wherein: The fluid management device includes a heat exchange portion, the heat exchange portion is fixedly connected or positionally connected to the second side portion, the heat exchange portion includes a flow channel, the flow channel has an opening facing the second side portion, the communication channel is connected to the flow channel, and the heat exchange portion includes a plurality of stacked plates, the stacking direction of the plates is perpendicular to the first surface; Along the axial direction of the first accommodation portion, the second accommodation portion is closer to the first accommodation portion than the heat exchange portion.

12. The fluid management device according to claim 11, wherein: The first side portion includes a first sub-portion and a second sub-portion, the fluid control portion includes a valve unit and a throttling unit, the opening of the first accommodating cavity corresponding to the valve unit is located in the first sub-portion, and the opening of the first accommodating cavity corresponding to the throttling unit is located in the second sub-portion; The heat exchange portion includes a first heat exchanger, a second heat exchanger and a third heat exchanger. Along the first direction, the third heat exchanger is located on one side of the second heat exchanger, the first heat exchanger is located on the other side of the second heat exchanger, and the third heat exchanger and the first heat exchanger are located on different sides of the second heat exchanger; along the axial direction of the first accommodating portion, the third heat exchanger is closer to the second sub-portion than the first heat exchanger, and the first heat exchanger is closer to the second sub-portion than the third heat exchanger.

13. The fluid management device according to claim 12, wherein: The heat exchange portion includes a first heat exchanger, a second heat exchanger, and a third heat exchanger; the valve unit includes a first valve unit, a second valve unit, and a third valve unit; and the throttling unit includes a first throttling unit and a second throttling unit; The communication channel includes a first sub-channel, a second sub-channel, a third sub-channel, a fourth sub-channel, a fifth sub-channel, a sixth sub-channel, and a seventh sub-channel, the first sub-channel having an opening at the second side portion facing the first flow channel of the first heat exchanger, the second sub-channel having an opening at the second side portion facing the first flow channel of the first heat exchanger, the second sub-channel having an opening at a wall of a housing portion accommodating the third valve unit, the second sub-channel having an opening at a wall of a housing portion accommodating the second valve unit, the second valve unit being capable of connecting and disconnecting the second sub-channel from the third sub-channel, and the third valve unit being capable of connecting and disconnecting the second sub-channel from the fourth sub-channel; The third sub-channel has an opening in the wall of the housing portion accommodating the first throttling unit, and the third sub-channel has an opening in the wall of the housing portion accommodating the second throttling unit. The third sub-channel can communicate with the fifth sub-channel through the first throttling unit, and the third sub-channel can communicate with the sixth sub-channel through the second throttling unit. The fifth sub-channel has an opening on the second side portion facing the first flow channel of the third heat exchanger, and the sixth sub-channel has an opening on the second side portion facing the first flow channel of the second heat exchanger. The fluid management device further includes a one-way component, which can enable the sixth sub-channel to be connected to the third sub-channel in a one-way manner. The fourth sub-channel has an opening on the second side facing the first flow channel of the second heat exchanger, the fourth sub-channel has an opening on the wall of the accommodating portion accommodating the first valve unit, the first valve unit can connect and disconnect the fourth sub-channel with the seventh sub-channel, and the seventh sub-channel has an opening on the second side facing the first flow channel of the third heat exchanger.

14. The fluid management device according to claim 13, wherein: The connecting member includes at least two plates, the plates are stacked, adjacent plates are fixed and sealed, at least one of the adjacent plates is provided with at least one communication channel portion, and the adjacent plates form the communication channel at the communication channel portion; The connecting member includes a first plate body and a second plate body, the first side portion and the second side portion are located on the first plate body, the fluid management device has a first interface, a second interface, a third interface and a fourth interface, the first interface, the second interface, the third interface and the fourth interface are located on the second plate body or on a tube or block fixedly connected or limit-connected to the second plate body, the first interface and the second interface are connected to the seventh sub-channel, the third interface is connected to the first sub-channel, and the fourth interface is connected to the third sub-channel.

15. The fluid management device according to claim 14, wherein: The sensing part includes a first sensing part, a second sensing part, a third sensing part and a fourth sensing part. The accommodating cavity or connecting cavity accommodating the first sensing part is connected to the first sub-channel, the accommodating cavity or connecting cavity accommodating the second sensing part is connected to the fourth sub-channel, the accommodating cavity or connecting cavity accommodating the third sensing part is connected to the third sub-channel, and the accommodating cavity or connecting cavity accommodating the fourth sensing part is connected to the seventh sub-channel.

16. The fluid management device according to claim 15, wherein: A first cross-section is defined, wherein the first cross-section is perpendicular to the extension direction of the connecting channel, and the first cross-section intersects with the connecting channel to form at least one flow cross-section. The area of ​​the flow cross-section remains unchanged, and the flow cross-section includes a width and a depth. The depth of the flow cross-section gradually increases along the flow direction of the fluid in the connecting channel, and the width of the flow cross-section decreases along the flow direction of the fluid in the connecting channel.

17. A thermal management system, comprising a compressor, a throttling element, a fourth heat exchanger and a fluid management device, wherein the fluid management device is a fluid management device according to any one of claims 1-2, 4, 6-16, and the fluid management device comprises a first interface, a second interface, a third interface and a fourth interface, the outlet of the compressor is connected to the third interface, the fourth interface is connected to the second interface through the throttling unit and the fourth heat exchanger, and the first interface is connected to the inlet of the compressor.

18. A thermal management system comprising a compressor, a throttling element, a fourth heat exchanger and a fluid management device, wherein the fluid management device is the fluid management device according to claim 3, and the fluid management device comprises a first interface, a second interface, a third interface and a fourth interface, the outlet of the compressor is connected to the third interface, the fourth interface is connected to the second interface through the throttling unit and the fourth heat exchanger, and the first interface is connected to the inlet of the compressor.

19. A thermal management system comprising a compressor, a throttling element, a fourth heat exchanger and a fluid management device, wherein the fluid management device is the fluid management device according to claim 5, and the fluid management device comprises a first interface, a second interface, a third interface and a fourth interface, the outlet of the compressor is connected to the third interface, the fourth interface is connected to the second interface through the throttling unit and the fourth heat exchanger, and the first interface is connected to the inlet of the compressor.

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