Runner plate, heat management integrated unit and vehicle

Abstract

The utility model discloses a flow channel plate, a heat management integration unit and a vehicle, a first flow channel and a second flow channel are arranged in the flow channel plate, and the first flow channel comprises a liquid supplementing opening used for being communicated with an expansion kettle; a connecting channel is further arranged in the runner plate, and the first runner and the second runner are communicated with each other through the connecting channel; the connecting channel comprises a mounting cavity, a flow resistance structure is arranged in the mounting cavity, and the cross sectional area of the other part, except the mounting cavity, of the connecting channel is smaller than that of the first flow channel and that of the second flow channel. According to the scheme, the probability of liquid mixing can be reduced, the probability of expansion and overflow of the cooling liquid is reduced, and the influence on the flow of a main loop can be reduced.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a flow channel plate, a thermal management integrated unit, and a vehicle. Background Technology

[0002] With the rapid development of new energy electric vehicles, the diversification of sales regions, and the fierce market competition, the demand for thermal management systems for vehicles is constantly increasing, and the research on electric vehicle thermal management systems is receiving more and more attention.

[0003] The thermal management system of an electric vehicle includes a battery cooling circuit and a motor cooling circuit. The battery cooling circuit is used to cool and heat the power battery during fast and slow charging and various driving conditions; the motor cooling circuit is used to dissipate heat when the motor is operating.

[0004] The motor cooling circuit and the battery cooling circuit are separate circulating water circuits, and the two circuits are connected to the two water inlets of the expansion tank respectively. However, in the existing technology, cross-contamination between the two water inlets is prone to occur. Utility Model Content

[0005] The main technical problem addressed by this application is to provide a flow channel plate, a thermal management integrated unit, and a vehicle that reduces the probability of cross-contamination, reduces the probability of coolant expansion and overflow, and minimizes the impact on the main circuit flow.

[0006] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a flow channel plate, wherein the flow channel plate has a first flow channel and a second flow channel, the first flow channel including a liquid inlet for communicating with an expansion tank; the flow channel plate also has a connecting channel, wherein the first flow channel and the second flow channel are interconnected through the connecting channel; the connecting channel includes a mounting cavity, wherein the mounting cavity is provided with a flow resistance structure, and the cross-sectional area of ​​the connecting channel, excluding the mounting cavity, is smaller than the cross-sectional area of ​​the first flow channel and the second flow channel.

[0007] Preferably, the connection channel includes a first sub-channel and a second sub-channel that are interconnected, one end of the first sub-channel is connected to the first flow channel, and the end of the second sub-channel away from the first sub-channel is connected to the second flow channel.

[0008] Preferably, the flow resistance structure includes at least one flow barrier plate, the edge of which is connected to the inner wall of the mounting cavity, and the flow barrier plate is provided with at least one through hole.

[0009] Preferably, the mounting cavity is located within the first sub-channel; the number of flow-blocking plates is multiple, and the multiple flow-blocking plates are spaced apart along the extension direction of the first sub-channel.

[0010] Preferably, the through holes on two adjacent flow deflectors are staggered in the extending direction of the flow deflectors.

[0011] Preferably, the first sub-channel extends along the edge of the flow channel plate, the second sub-channel is located on the side of the first sub-channel away from the edge, and the mounting cavity protrudes in a direction away from the second sub-channel.

[0012] Preferably, the flow channel plate includes a first flow channel plate and a second flow channel plate disposed opposite to each other, the first flow channel plate and the second flow channel plate together forming the first flow channel, the second flow channel and the connecting channel.

[0013] Preferably, the flow channel plate is provided with a first inlet, a first outlet, a second inlet, a second outlet and a third outlet, the first inlet is connected to the first flow channel, the first outlet and the second inlet are connected to the second flow channel, and the second outlet and the third outlet are spaced apart from the first flow channel and the second flow channel.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is: providing a thermal management integrated unit, including the flow channel plate described in any embodiment, and further including an expansion tank, a motor water pump, a battery water pump, and a valve; the flow channel plate is also provided with a motor water pump connection port and a battery water pump connection port, the motor water pump connection port being connected to one of the first flow channel and the second flow channel, and the battery water pump connection port being connected to the other of the first flow channel and the second flow channel; the expansion tank includes a water outlet, the water outlet being connected to the liquid replenishment port; the motor water pump is disposed on the flow channel plate, and the motor water pump is connected to the motor water pump connection port; the battery water pump is disposed on the flow channel plate, and the battery water pump is connected to one end of the battery water pump connection port.

[0015] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a vehicle including the thermal management integrated unit described in any embodiment.

[0016] The beneficial effects of this application are as follows: Unlike existing technologies, the flow channel plate provided in this application has only one liquid inlet. Both the first and second flow channels are replenished from the expansion tank through this inlet. The first flow channel replenishes the motor cooling circuit, and the second flow channel replenishes the battery cooling circuit. When a pressure difference exists between the motor cooling circuit and the battery cooling circuit, since both are replenished from the expansion tank through the same inlet, the coolant in the expansion tank will not be affected by the pressure difference, avoiding problems such as liquid level difference or gas backflow. Simultaneously, because the flow channel plate has a connecting channel linking the first and second flow channels, when a pressure difference occurs, the coolant can transfer between the first and second flow channels through the connecting channel to balance the pressure difference. Furthermore, when the temperature rises and the coolant expands, the coolant can flow to the connecting channel, preventing overflow. Meanwhile, due to the small cross-sectional area of ​​the connecting channel and the flow resistance structure set in the mounting cavity of the connecting channel, the flow rate of coolant in the connecting channel can be reduced, avoiding excessive coolant flowing into the connecting channel, reducing the impact on the main circuit flow rate, ensuring sufficient coolant flow in the first and second flow channels, thereby ensuring the cooling effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the flow channel plate of this application;

[0018] Figure 2 This is a schematic diagram of the internal structure of one embodiment of the flow channel plate of this application;

[0019] Figure 3 This is a partially enlarged view of the flow resistance structure of this application;

[0020] Figures 4a-4c This is a schematic diagram of various embodiments of the thermal management system of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In existing technology, the motor cooling circuit and the battery cooling circuit are separate circulating water circuits, each connected to one of the two inlets of the expansion tank. Due to the pressure difference between the two cooling circuits, a pressure difference also exists between the two inlets. The inventors have discovered that this pressure difference easily leads to cross-contamination between the two inlets, resulting in a liquid level difference between different cavities within the expansion tank. Under excessively large pressure differences, gas may even be drawn back into the circuit, causing the coolant to become cloudy. Therefore, this application provides a flow channel plate to solve the above problems.

[0023] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of one embodiment of the flow channel plate of this application. Figure 2 This is a schematic diagram of the internal structure of one embodiment of the flow channel plate of this application. The flow channel plate 1 has a first flow channel 11 and a second flow channel 12. Specifically, the flow channel plate 1 includes a first flow channel sub-plate 101 and a second flow channel sub-plate 102. Flow channel grooves (not shown) are provided on opposite sides of the first flow channel sub-plate 101 and the second flow channel sub-plate 102. After the first flow channel sub-plate 101 and the second flow channel sub-plate 102 are attached together, the first flow channel 11 and the second flow channel 12 are formed in the flow channel plate 1. The first flow channel 11 includes a liquid inlet 111 for communicating with an expansion tank. The liquid inlet 111 is located at the top of the first flow channel 11 along the first direction Y. The end of the first flow channel 11 away from the liquid inlet 111 is used to connect to a motor water pump. The second flow channel 12 is located on one side of the first flow channel 11, and one end of the second flow channel 12 is used to connect to a battery water pump. The flow channel plate 1 also has a connecting channel 13, through which the first flow channel 11 and the second flow channel 12 are interconnected. Specifically, the connecting channel 13 is located at the top of the flow channel plate 1, and its two ends are connected to the first flow channel 11 and the second flow channel 12, respectively. The connecting channel 13 includes a mounting cavity 1311, which is provided with a flow resistance structure 14. The cross-sectional area of ​​the remaining part of the connecting channel 13, excluding the mounting cavity 1311, is smaller than the cross-sectional areas of the first flow channel 11 and the second flow channel 12.

[0024] The flow channel plate 1 provided in this application has only one liquid replenishment port 111. Both the first flow channel 11 and the second flow channel 12 are replenished from the expansion tank 21 through this port 111. The first flow channel 11 replenishes the motor cooling circuit, and the second flow channel 12 replenishes the battery cooling circuit. When a pressure difference exists between the motor cooling circuit and the battery cooling circuit, since both are replenished from the expansion tank through the same port 111, the coolant in the expansion tank will not be affected by the pressure difference, avoiding problems such as liquid level difference or gas backflow. Simultaneously, because the flow channel plate 1 has a connecting channel 13 connecting the first flow channel 11 and the second flow channel 12, when a pressure difference occurs, the coolant can transfer between the first flow channel 11 and the second flow channel 12 through the connecting channel 13 to balance the pressure difference. Furthermore, when the temperature rises and the coolant expands, the coolant can flow to the connecting channel 13, avoiding overflow problems. The cross-sectional area of ​​the connecting channel 13, except for the area used to install the flow resistance structure 14, is smaller than the cross-sectional areas of the first flow channel 11 and the second flow channel 12. The smaller cross-sectional area of ​​the connecting channel 13 reduces the flow rate of coolant within it, preventing excessive coolant from flowing into the channel and minimizing its impact on the main circuit (motor cooling circuit and battery cooling circuit). This ensures sufficient coolant flow in the first and second flow channels 11, thereby guaranteeing effective cooling. The connecting channel 13 includes a mounting cavity 1311, within which a flow resistance structure 14 is provided. By increasing the flow resistance of the coolant within the connecting channel 13 using the flow resistance structure 14, the impact of the connecting channel 13 on the main circuit flow rate is further reduced, ensuring optimal cooling performance.

[0025] Optionally, continue reading Figure 2 The connecting channel 13 includes a first sub-channel 131 and a second sub-channel 132 that are interconnected. One end of the first sub-channel 131 is connected to the first flow channel 11, and one end of the second sub-channel 132 is connected to the second flow channel 12. Specifically, the first sub-channel 131 extends along the second direction X, is disposed on the top of the flow channel plate 1, and extends along the top edge of the flow channel plate 1. One right end of the first sub-channel 131 is connected to the first flow channel 11. An opening is provided in the groove wall between the first sub-channel 131 and the first flow channel 11, so that the first sub-channel 131 and the first flow channel 11 are connected. The second sub-channel 132 extends along the first direction Y. The top end of the second sub-channel 132 is connected to the first sub-channel 131, and the bottom end of the second sub-channel 132 is connected to the top end of the second flow channel 12. An opening is provided in the groove wall between the second sub-channel 132 and the second flow channel 12 to realize the connection between the two. Optionally, the diameter of the opening is smaller than the diameter of the first sub-channel 131 and the second sub-channel 132. Specifically, the diameter of the opening can be 2mm, 3mm, etc.

[0026] The flow resistance structure 14 can have various structural forms; for example, in some embodiments, see [reference needed]. Figure 2 and Figure 3 , Figure 3 This is a partially enlarged view of the flow resistance structure of this application. The flow resistance structure 14 includes a flow resistance structure 14 located within the first sub-channel 131; the flow resistance structure 14 includes at least one baffle plate 141, the edge of which is connected to the inner wall of the first sub-channel 131, and the baffle plate 141 has at least one through hole 142. The baffle plate 141 completely blocks the first sub-channel 131. By opening the through hole 142 in the baffle plate 141, the coolant can be allowed to pass smoothly through the first sub-channel 131 while reducing the flow rate of the coolant. Optionally, the number of through holes 142 can be multiple, which is not specifically limited in this application. The multiple through holes 142 are distributed along the width direction of the first sub-channel 131. Optionally, to facilitate the installation of the flow-blocking plate 141 within the first sub-channel 131, the first sub-channel 131 further includes a mounting cavity 1311. The mounting cavity 1311 is located in the middle section of the first sub-channel 131, and its width is greater than the width of other parts of the first sub-channel 131. The flow-blocking plate 141 is disposed within the mounting cavity 1311. To avoid affecting other flow channels within the flow channel plate 1, the top of the mounting cavity 1311 protrudes from the flow channel plate 1 on the side opposite to the first flow channel 11. In other embodiments, the flow-blocking structure 14 may also be disposed within the second sub-channel 132, or both the first sub-channel 131 and the second sub-channel 132 may be provided with a flow-blocking structure 14.

[0027] Optionally, continue reading Figure 2 and Figure 3 Multiple baffles 141 are arranged at intervals along the second direction X, with through holes 142 on adjacent baffles 141 staggered. Specifically, the through holes 142 on each baffle 141 are distributed along the first direction Y, and the orthographic projection of a through hole 142 on one baffle 141 onto an adjacent baffle 141 only partially overlaps or does not overlap at all with the through holes 142 on the adjacent baffle 141. The above arrangement forms one or more approximately S-shaped channels in the first sub-channel 131, further slowing down the flow rate of coolant in the second sub-channel 132, reducing the coolant flow rate in the second sub-channel 132, and reducing the impact on the main circuit flow rate. In other embodiments, the flow resistance structure 14 may also be disposed within the second sub-channel 132, or both the first sub-channel 131 and the second sub-channel 132 may be provided with the flow resistance structure 14, and multiple flow baffles 141 may be spaced apart along the extension direction of the second sub-channel 132, i.e., the first direction Y. The number of flow baffles 141 in the first sub-channel 131 may be the same as or different from the number of flow baffles 141 in the second sub-channel 132, and the number of flow baffles 141 may be determined according to the actual length.

[0028] Specifically, such as Figure 1As shown, the flow channel plate 1 is provided with a first inlet 112, a first outlet 121, a second inlet 122, a second outlet 15, and a third outlet 16. The first inlet 112 is connected to the first flow channel 11, the first outlet 121 and the second inlet 122 are both connected to the second flow channel 12, and the second outlet 15 and the third outlet 16 are spaced apart from the first flow channel 11 and the second flow channel 12. The flow channel plate 1 is also provided with a motor water pump connection port 17 and a battery water pump connection port 18. The motor water pump connection port 17 is connected to the first flow channel 11, and the battery water pump connection port 18 is connected to the second flow channel 12.

[0029] This application also provides a thermal management integrated unit, which includes the flow channel plate 1 in any embodiment, and further includes an expansion tank, a motor water pump, a battery water pump, and a valve (not shown). The expansion tank is disposed on the top of the flow channel plate 1 and extends along the top edge of the flow channel plate 1, for replenishing coolant to the motor cooling circuit and the battery cooling circuit. The expansion tank includes a water outlet (not shown) located at the bottom, which is connected to a replenishment port 111 communicating with the first flow channel 11. The motor water pump is disposed on the flow channel plate 1 and communicates with a motor water pump connection port 17. The battery water pump is disposed on the flow channel plate 1 and communicates with a battery water pump connection port 18. The valve is disposed on the flow channel plate 1 and communicates with the first flow channel 11 and the second flow channel 12. The valve in this embodiment is a five-way valve with five ports. The first port is connected to a three-way valve in the thermal management system via a second outlet 15. The second port is connected to a first flow channel 11 via a first inlet 112. The third port is connected to a second flow channel 12 via a first outlet 121. The fourth port is connected to a second flow channel 12 via a second inlet 122. The fifth port is connected to a radiator in the thermal management system via a third outlet 16. The thermal management integrated unit of this application integrates an expansion tank, a motor-driven water pump, a battery-driven water pump, and the five-way valve on the flow channel plate 1, enabling multiple thermal management operating modes.

[0030] See Figures 4a-4c , Figures 4a-4c This is a schematic diagram of various embodiments of the thermal management system of this application. The thermal management system 10 of this application includes the thermal management integrated unit of the aforementioned embodiments. The figure shows an expansion tank 21, a motorized water pump 22, a battery-powered water pump 23, a five-way valve 24, and a connection channel 13. It also includes a three-way valve 3, an electric drive unit 4, a battery unit 5, a cooler 6, and a radiator 7. Figures 4a-4cIt can be seen that the first valve port 241 of the five-way valve 24 is connected to the first valve port 31 of the three-way valve 3, the second valve port 32 of the three-way valve 3 is connected to one end of the motor water pump 22, the other end of the motor water pump 22 is connected to one end of the electric drive unit 4, and the other end of the electric drive unit 4 is connected to the second valve port 242 of the five-way valve 24; the third valve port 243 of the five-way valve 24 is connected to one end of the battery water pump 23, the other end of the battery water pump 23 is connected to the cooler 6, the cooler 6 is connected to one end of the battery unit 5, and the other end of the battery unit 5 is connected to the fourth valve port 244 of the five-way valve 24; the fifth valve port 245 of the five-way valve 24 is connected to one end of the radiator 7, and the other end of the radiator 7 is connected to the third valve port 33 of the three-way valve 3; the expansion tank 21 is connected to the end of the motor water pump 22 away from the electric drive unit 4 through the first flow channel 11, and the first flow channel 11 is connected to the end of the battery water pump 23 away from the cooler 6 through the connecting channel 13.

[0031] Figures 4a-4c The dashed line indicates that it is not connected to the circuit, and the arrow indicates the direction of coolant flow. Figure 4a In the waste heat utilization mode of the electric drive unit 4 of the thermal management system 10, the first valve port 241 and the fourth valve port 244 of the five-way valve 24 are connected, as are the second valve port 242 and the third valve port 243. The radiator 7 is not connected to the circuit. In this mode, the coolant flows through the battery unit 5 and the five-way valve 24, then through the electric drive unit 4 and back through the five-way valve 24, converging at the third valve port 243. The coolant 6 recovers the heat from the electric drive and the battery for waste heat utilization.

[0032] Figure 4b This is the state of the electric drive unit 4 / battery unit 5 in the independent cooling mode of the thermal management system 10. In this mode, the second and fifth valve ports of the five-way valve 24 are connected, as are the fourth and third valve ports. The radiator 7 is connected to the cooling circuit of the electric drive unit 4. In this mode, the battery unit 5, five-way valve 24, battery water pump 23, and cooler 6 form the battery cooling circuit, while the electric drive unit 4, five-way valve 24, radiator 7, and motor water pump 22 form the motor cooling circuit. Both components are cooled independently.

[0033] Figure 4c This is the state of the thermal management system 10 in series cooling mode. In series cooling mode, the fourth valve port 244 and the fifth valve port 245 of the five-way valve 24 are connected, and the second valve port 242 and the third valve port 243 of the five-way valve 24 are also connected. In this mode, the battery cooling circuit and the motor cooling circuit are connected in series.

[0034] With the above settings, the thermal management system 10 of this application can realize multiple thermal management working modes.

[0035] This application also provides a vehicle including a thermal management integrated unit 2 according to any embodiment, suitable for electric vehicles.

[0036] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A flow channel plate, characterized in that, The flow plate has a first flow channel and a second flow channel, and the first flow channel includes a liquid replenishment port for communicating with an expansion tank. The flow channel plate also has a connecting channel, through which the first flow channel and the second flow channel are interconnected. The connection channel includes a mounting cavity, and the mounting cavity is provided with a flow resistance structure. The cross-sectional area of ​​the connection channel, excluding the mounting cavity, is smaller than the cross-sectional area of ​​the first flow channel and the second flow channel.

2. The flow channel plate according to claim 1, characterized in that, The connection channel includes a first sub-channel and a second sub-channel that are interconnected. One end of the first sub-channel is connected to the first flow channel, and the end of the second sub-channel away from the first sub-channel is connected to the second flow channel.

3. The flow channel plate according to claim 2, characterized in that, The flow resistance structure includes at least one flow barrier plate, the edge of which is connected to the inner wall of the mounting cavity, and the flow barrier plate is provided with at least one through hole.

4. The flow channel plate according to claim 3, characterized in that, The mounting cavity is located within the first sub-channel; The number of flow-blocking plates is multiple, and the multiple flow-blocking plates are spaced apart along the extension direction of the first sub-channel.

5. The flow channel plate according to claim 3, characterized in that, The through holes on two adjacent flow-blocking plates are staggered in the extension direction of the flow-blocking plates.

6. The flow channel plate according to claim 4, characterized in that, The first sub-channel extends along the edge of the flow channel plate, the second sub-channel is located on the side of the first sub-channel away from the edge, and the mounting cavity protrudes away from the second sub-channel.

7. The flow channel plate according to claim 1, characterized in that, The flow channel plate includes a first flow channel plate and a second flow channel plate arranged opposite to each other, and the first flow channel plate and the second flow channel plate together form the first flow channel, the second flow channel and the connecting channel.

8. The flow channel plate according to claim 1, characterized in that, The flow channel plate is provided with a first inlet, a first outlet, a second inlet, a second outlet and a third outlet. The first inlet is connected to the first flow channel, the first outlet and the second inlet are connected to the second flow channel, and the second outlet and the third outlet are spaced apart from the first flow channel and the second flow channel.

9. A thermal management integrated unit, characterized in that, include: The flow channel plate as described in any one of claims 1-8 is further provided with a motor water pump connection port and a battery water pump connection port, wherein the motor water pump connection port is connected to one of the first flow channel and the second flow channel, and the battery water pump connection port is connected to the other of the first flow channel and the second flow channel; An expansion tank, the expansion tank including a water outlet connected to a liquid replenishment port; A motor-driven water pump is installed on the flow channel plate, and the motor-driven water pump is connected to the motor-driven water pump connection port; A battery-powered water pump is installed on the flow channel plate, and one end of the battery-powered water pump is connected to the battery-powered water pump connection port; A valve is disposed on the flow channel plate, and the valve is in communication with the first flow channel and the second flow channel.

10. A vehicle, characterized in that, Includes the thermal management integrated unit as described in claim 9.

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