Runner plate, heat management integrated unit and vehicle

Abstract

The invention 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 flow channel plate, and the first flow channel and the second flow channel are communicated with each other through the connecting channel. According to the scheme, the probability of liquid mixing can be reduced, and the probability of expansion and overflow of the cooling liquid can be reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a flow channel plate, a thermal management integrated unit and a vehicle. Background Art

[0002] With the rapid development of new energy electric vehicles, the diversity of sales areas and the fierce competition in the market, the demand for thermal management systems of complete vehicles continues to increase, and the research on thermal management systems of electric vehicles has received more and more attention.

[0003] The electric vehicle thermal management system includes a battery cooling circuit and a motor cooling circuit. The battery cooling circuit is used to realize the cooling and heating functions of the power battery under fast and slow charging and various driving conditions; the motor cooling circuit is used to dissipate heat when the motor is working.

[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 filling ports of the expansion kettle respectively. However, in the prior art, liquid cross-talk is prone to occur between the two water filling ports. Summary of the invention

[0005] The main technical problem solved by the present application is to provide a flow channel plate, a thermal management integrated unit and a vehicle, which can reduce the probability of liquid cross-linking problems and reduce the probability of coolant expansion and overflow.

[0006] In order to solve the above technical problems, a technical solution adopted in the present 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 includes a fluid infusion port for communicating with an expansion kettle; the flow channel plate also has a connecting channel, and the first flow channel and the second flow channel are connected to each other through the connecting channel.

[0007] Preferably, a flow resistance structure is provided in the connecting channel. By providing the flow resistance structure, the flow resistance of the coolant in the connecting channel is increased, so as to further reduce the influence of the connecting channel on the flow of the main circuit and ensure the cooling effect.

[0008] Preferably, the connecting channel comprises a first sub-channel and a second sub-channel which are connected to each other, one end of the first sub-channel is connected to the first flow channel, and one end of the second sub-channel is connected to the second flow channel.

[0009] Preferably, the flow resistance structure includes a first flow resistance structure, the first flow resistance structure is located in the second sub-channel; the first flow resistance structure includes at least one first baffle, the first baffle includes a connecting end and a free end, the connecting end is connected to the inner wall of the second sub-channel, and the free end extends into the second sub-channel. The first baffle can slow down the flow rate of the coolant in the second sub-channel, reduce the coolant flow in the second sub-channel, and reduce the impact on the main circuit flow. At the same time, since there is an opening between the first baffle and the inner wall of the second sub-channel, a small amount of coolant can be ensured to flow in the connecting channel.

[0010] Preferably, there are multiple first spoilers, which are arranged at intervals along the first direction, and along the first direction, the multiple first spoilers are alternately arranged on two oppositely arranged side walls of the second sub-channel, wherein the first direction is the extension direction of the second sub-channel. The multiple first spoilers alternately arranged left and right form an approximately S-shaped channel in the second sub-channel, further slowing down the flow rate of the coolant in the second sub-channel, reducing the coolant flow in the second sub-channel, and reducing the impact on the main circuit flow.

[0011] Preferably, the free end of the first baffle extends to a side away from the second flow channel. The above arrangement is conducive to discharging bubbles in the main circuit upward away from the second flow channel, and avoiding bubbles from being retained in the space between the first baffle and the inner wall of the second sub-channel.

[0012] Preferably, the flow resistance structure includes a second flow resistance structure, the second flow resistance structure is located in the first sub-channel; the second flow resistance structure includes at least one second flow baffle, the edge of the second flow baffle is connected to the inner wall of the first sub-channel, and the second flow baffle is provided with at least one through hole. By providing the through hole on the second flow baffle, the flow rate of the coolant can be reduced while ensuring that the coolant can smoothly pass through the first sub-channel.

[0013] Preferably, the number of the second spoiler plates is multiple, and the multiple second spoiler plates are arranged at intervals along the second direction, and the through holes on two adjacent second spoiler plates are arranged in a staggered manner. The above arrangement forms one or more approximately S-shaped channels in the first sub-channel, further slowing down the flow rate of the coolant in the second sub-channel, reducing the coolant flow in the second sub-channel, and reducing the impact on the main circuit flow.

[0014] To solve the above technical problems, another technical solution adopted in the present application is: to provide a thermal management integrated unit, comprising the flow channel plate, expansion kettle, motor water pump, battery water pump and valve described in any one of the embodiments; the expansion kettle comprises a water outlet, and the water outlet is connected to the liquid replenishing port; the motor water pump is arranged on the flow channel plate, and the motor water pump is connected to one end of the first flow channel and the second flow channel away from the expansion kettle; the battery water pump is arranged on the flow channel plate, and the battery water pump is connected to one end of the first flow channel and the second flow channel away from the expansion kettle; the valve is arranged on the flow channel plate, and the valve is connected to the first flow channel and the second flow channel.

[0015] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a vehicle, comprising the thermal management integrated unit described in any embodiment.

[0016] The beneficial effects of the present application are as follows: Different from the prior art, the flow channel plate provided by the present application is only provided with one refilling port, that is, the first flow channel and the second flow channel are both refilled from the expansion kettle through the refilling port, the first flow channel is for refilling the motor cooling circuit, and the second flow channel is for refilling the battery cooling circuit. When there is a pressure difference between the pressure of the motor cooling circuit and the battery cooling circuit, since both are refilled with the expansion kettle through the same refilling port, the coolant in the expansion kettle will not be affected by the pressure difference, thus avoiding the problem of liquid level difference or gas back-absorption. At the same time, since a connecting channel connecting the first flow channel and the second flow channel is provided on the flow channel plate, when a pressure difference occurs, the coolant can be transferred between the first flow channel and the second flow channel through the connecting channel to balance the pressure difference. In addition, when the temperature rises and the coolant expands, the coolant can flow to the connecting channel to avoid the problem of overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of a flow channel plate according to an embodiment of the present application;

[0018] Figure 2 is a partial enlarged view of the first flow resistance structure of the present application;

[0019] Figure 3 It is a schematic diagram of the internal structure of another embodiment of the flow channel plate of the present application;

[0020] Figure 4 is a partial enlarged view of the second flow resistance structure of the present application;

[0021] Figure 5 It is a structural schematic diagram of an implementation scheme of a thermal management integrated unit of the present application;

[0022] Figure 6a-6c It is a schematic diagram of the structure of various implementations of the thermal management system of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] In the prior art, the motor cooling circuit and the battery cooling circuit are separate circulating water circuits, and the two circuits are connected to the two water filling ports of the expansion kettle respectively. Due to the pressure difference between the two cooling circuits, there is also a pressure difference between the two filling ports. The inventors found that due to the existence of the pressure difference, it is easy for the problem of shunting and cross-flowing liquid to occur between the two filling ports, resulting in a liquid level difference between different cavities in the expansion kettle. In the case of excessive pressure difference, there is even a problem of gas back-sucking into the circuit, resulting in turbidity of the coolant. In view of this, the present application provides a flow channel plate to solve the above problems.

[0025] See also Figure 1 , Figure 1 1 is a schematic diagram of the internal structure of a flow channel plate of the present 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 ( Figure 1 Not shown), flow channel grooves (not marked) are provided on the opposite sides of the first flow channel sub-plate 101 and the second flow channel sub-plate. After the first flow channel sub-plate 101 and the second flow channel sub-plate are attached, the first flow channel 11 and the second flow channel 12 are formed in the flow channel plate 1, wherein the first flow channel 11 includes a fluid replenishment port 111 for communicating with the expansion kettle, and the fluid replenishment port 111 is located at the top of the first flow channel 11 along the first direction Y, and the end of the first flow channel 11 away from the fluid replenishment port 111 is used to connect to the motor water pump, and 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 the battery water pump. The flow channel plate 1 also has a connecting channel 13, and the first flow channel 11 and the second flow channel 12 are connected to each other through the connecting channel 13. Specifically, the connecting channel 13 is located at the top of the flow channel plate 1, and the two ends of the connecting channel 13 are respectively connected to the first flow channel 11 and the second flow channel 12.

[0026] The flow channel plate 1 provided in the present application is only provided with one refilling port 111, that is, the first flow channel 11 and the second flow channel 12 are both refilled from the expansion kettle through the refilling port 111, the first flow channel 11 is for refilling the motor cooling circuit, and the second flow channel 12 is for refilling the battery cooling circuit. When there is a pressure difference between the pressure of the motor cooling circuit and the battery cooling circuit, since both are refilled with the expansion kettle through the same refilling port 111, the coolant in the expansion kettle will not be affected by the pressure difference, thus avoiding the problem of liquid level difference or gas back-absorption. At the same time, since a connecting channel 13 connecting the first flow channel 11 and the second flow channel 12 is provided on the flow channel plate 1, when a pressure difference occurs, the coolant can be transferred between the first flow channel 11 and the second flow channel 12 through the connecting channel 13 to balance the pressure difference. In addition, when the temperature rises and the coolant expands, the coolant can flow to the connecting channel 13 to avoid the problem of overflow.

[0027] Optionally, the cross-sectional area of ​​the connecting channel 13 is smaller than the cross-sectional areas of the first flow channel 11 and the second flow channel 12. The connecting channel 13 with a smaller cross-sectional area can reduce the flow rate of the coolant in the connecting channel 13, avoid excessive coolant flowing into the connecting channel 13, reduce the impact on the flow rate of the main circuit (motor cooling circuit and battery cooling circuit), ensure sufficient coolant flow in the first flow channel 11 and the second flow channel 12, and thus ensure the cooling effect.

[0028] Optionally, continue to Figure 1 , the connecting channel 13 includes a first sub-channel 131 and a second sub-channel 132 which are connected to each other, 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 and is arranged on the top of the flow channel plate 1, the right end of the first sub-channel 131 is connected to the first flow channel 11, and an opening is arranged on 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, the bottom end of the second sub-channel 132 is connected to the top end of the second flow channel 12, and an opening is arranged on the groove wall between the second sub-channel 132 and the second flow channel 12 to achieve 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 2 mm, 3 mm, etc.

[0029] Optionally, continue to Figure 1 , a flow resistance structure 14 is provided in the connecting channel 13. The flow resistance structure 14 is provided to increase the flow resistance of the coolant in the connecting channel 13, so as to further reduce the influence of the connecting channel 13 on the main circuit flow, thereby ensuring the cooling effect. The flow resistance structure 14 can have various forms and structures, which are not specifically limited in this application.

[0030] For example, in some embodiments, see Figure 1 The flow resistance structure 14 includes a first flow resistance structure 141, and the first flow resistance structure 141 is located in the second sub-channel 132. Figure 2 , Figure 2 It is a partial enlarged view of the first flow resistance structure of the present application. The first flow resistance structure 141 includes at least one first baffle 1411, and the first baffle 1411 includes a connecting end 1411a and a free end 1411b. The connecting end 1411a is connected to the inner wall of the second sub-channel 132, and the free end 1411b extends into the second sub-channel 132. The second sub-channel 132 has two inner walls arranged opposite to each other. One end of the first baffle 1411 is connected to the inner wall of one side of the second sub-channel 132, and the other end is at a certain distance from the inner wall of the other side of the second sub-channel 132. The first baffle 1411 can slow down the flow rate of the coolant in the second sub-channel 132, reduce the coolant flow in the second sub-channel 132, and reduce the impact on the main circuit flow. At the same time, since there is an opening between the first baffle 1411 and the inner wall of the second sub-channel 132, it can ensure that a small amount of coolant flows in the connecting channel 13. In other embodiments, the first flow resistance structure 141 may also be disposed in the first sub-channel 131, or the first flow resistance structure 141 may be disposed in both the first sub-channel 131 and the second sub-channel 132. Optionally, in order to ensure that the coolant can smoothly pass through the opening between the first spoiler 1411 and the inner wall of the second sub-channel 132, the end surface of the free end 1411b of the first spoiler 1411 is a convex arc surface, which can reduce the impact of the coolant on the end surface of the first spoiler 1411 and reduce the probability of damage to the first spoiler 1411.

[0031] Optionally, continue to Figure 1 and Figure 2In this embodiment, the number of the first baffles 1411 is multiple, and the multiple first baffles 1411 are arranged at intervals along the first direction Y, and along the first direction Y, the multiple first baffles 1411 are alternately arranged on two oppositely arranged side walls of the second sub-channel 132. That is, along the first direction Y, the first first baffle 1411 is connected to the right inner wall and extends to the left, the second first baffle 1411 is connected to the left inner wall and extends to the right, and so on. The multiple first baffles 1411 alternately arranged on the left and right form an approximately S-shaped channel in the second sub-channel 132, further slowing down the flow rate of the coolant in the second sub-channel 132, reducing the coolant flow in the second sub-channel 132, and reducing the impact on the main circuit flow. In other embodiments, the first flow resistance structure 141 may also be disposed in the first subchannel 131, or the first flow resistance structure 141 may be disposed in both the first subchannel 131 and the second subchannel 132, and in the first subchannel 131, along the extension direction of the first subchannel 131, i.e., the second direction X, a plurality of first flow spoilers 1411 are alternately disposed up and down on the inner walls on both sides of the first subchannel 131. The number of the first flow spoilers 1411 in the first subchannel 131 and the number of the first flow spoilers 1411 in the second subchannel 132 may be the same or different, and the number of the first flow spoilers 1411 may be determined according to the actual length.

[0032] Optionally, continue to Figure 1 and Figure 2 , the free end 1411b of the first spoiler 1411 extends toward a side away from the second flow channel 12. Figure 2 It can be seen that all the first baffles 1411 are arranged obliquely and extend in a direction away from the second flow channel 12. The above arrangement is conducive to discharging the bubbles in the main circuit upward in a direction away from the second flow channel 12, and preventing the bubbles from being retained in the space between the first baffle 1411 and the inner wall of the second sub-channel 132. In other embodiments, the first baffle 1411 can be arranged perpendicular to the extension direction of the second sub-channel 132, or the first baffle 1411 can also extend toward the second flow channel 12. The above structure can further increase the flow resistance and further reduce the impact on the flow of the main circuit.

[0033] For example, in other embodiments, see Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the internal structure of another embodiment of the flow channel plate of the present application, Figure 4It is a partial enlarged view of the second flow resistance structure of the present application. The flow resistance structure 14 includes a second flow resistance structure 142, and the second flow resistance structure 142 is located in the first sub-channel 131; the second flow resistance structure 142 includes at least one second baffle 1421, the edge of the second baffle 1421 is connected to the inner wall of the first sub-channel 131, and the second baffle 1421 is provided with at least one through hole 1422. Unlike the first baffle 1411, the second baffle 1421 completely blocks the first sub-channel 131, and the through hole 1422 is opened on the second baffle 1421 to ensure that the coolant can smoothly pass through the first sub-channel 131 while reducing the flow rate of the coolant. Optionally, the number of through holes 1422 can be set to multiple, and the present application does not make a specific limitation, and the multiple through holes 1422 are distributed along the width direction of the first sub-channel 131. Optionally, in order to facilitate the installation of the second spoiler 1421 in the first sub-channel 131, the first sub-channel 131 further includes an installation cavity 1311, the installation cavity 1311 is located in the middle section of the first sub-channel 131, the width of the installation cavity 1311 is greater than the width of other parts of the first sub-channel 131, and the second spoiler 1421 is arranged in the installation cavity 1311. In order to avoid affecting other flow channels in the flow channel plate 1, the side of the installation cavity 1311 away from the first flow channel 11, that is, the top of the installation cavity 1311 protrudes from the flow channel plate 1. In other embodiments, the second flow resistance structure 142 can also be arranged in the second sub-channel 132, or the second flow resistance structure 142 is provided in both the first sub-channel 131 and the second sub-channel 132.

[0034] Optionally, continue to Figure 3 and Figure 4, the number of the second spoiler plates 1421 is multiple, the multiple second spoiler plates 1421 are arranged at intervals along the second direction X, and the through holes 1422 on two adjacent second spoiler plates 1421 are arranged in a staggered manner. Specifically, the through holes 1422 on each second spoiler plate 1421 are distributed along the first direction Y, and the orthographic projection of the through holes 1422 on one second spoiler plate 1421 on another adjacent second spoiler plate 1421 only partially overlaps or does not overlap at all with the through holes 1422 on the adjacent second spoiler plate 1421. The above arrangement forms one or more approximately S-shaped channels in the first sub-channel 131, further slows down the flow rate of the coolant in the second sub-channel 132, reduces the coolant flow in the second sub-channel 132, and reduces the impact on the flow of the main circuit. In other embodiments, the second flow resistance structure 142 may also be disposed in the second subchannel 132, or the second flow resistance structure 142 may be disposed in both the first subchannel 131 and the second subchannel 132, and in the second subchannel 132, a plurality of second flow spoilers 1421 may be disposed at intervals along the extension direction of the second subchannel 132, i.e., the first direction Y. The number of the second flow spoilers 1421 in the first subchannel 131 may be the same as or different from the number of the second flow spoilers 1421 in the second subchannel 132, and the number of the second flow spoilers 1421 may be determined according to the actual length.

[0035] The first flow resistance structure 141 and the second flow resistance structure 142 may be disposed on one flow channel plate 1 at the same time, or only one first flow resistance structure 141 or one second flow resistance structure 142 may be disposed on one flow channel plate 1 .

[0036] See also Figure 5 , Figure 5 It is a structural schematic diagram of an embodiment of the thermal management integrated unit of the present application. The thermal management integrated unit 2 includes the flow channel plate 1, the expansion kettle 21, the motor water pump 22, the battery water pump 23 and the valve (not shown) in any embodiment. The expansion kettle 21 is arranged on the top of the flow channel plate 1, and is used to replenish the coolant for the motor cooling circuit and the battery cooling circuit. The expansion kettle 21 includes a water outlet 211 located at the bottom, and the water outlet 211 is connected to the liquid replenishment port 111 of the first flow channel 11. The motor water pump 22 is arranged on the flow channel plate 1, and the motor water pump 22 is connected to the end of the first flow channel 11 away from the expansion kettle 21. The battery water pump 23 is arranged on the flow channel plate 1, and the battery water pump 23 is connected to the end of the second flow channel 12 away from the expansion kettle 21. The valve is arranged on the flow channel plate 1, and the valve is connected to the first flow channel 11 and the second flow channel 12. Specifically, as Figure 1As shown, the first flow channel 11 of the flow channel plate 1 includes a first inlet 112, the second flow channel 12 includes a first outlet 121 and a second inlet 122, and the flow channel plate 1 is also provided with a second outlet 15 and a third outlet 16 spaced apart from the first flow channel 11 and the second flow channel 12. The valve of this embodiment is a five-way valve, which has five valve ports in total, wherein the first valve port is connected to the three-way valve in the thermal management system through the second outlet 15, the second valve port is connected to the first flow channel 11 through the first inlet 112, the third valve port is connected to the second flow channel 12 through the first outlet 121, the fourth valve port is connected to the second flow channel 12 through the second inlet 122, and the fifth valve port is connected to the radiator in the thermal management system through the third outlet 16. The thermal management integrated unit 2 of the present application integrates the expansion kettle 21, the motor water pump 22, the battery water pump 23 and the five-way valve on the flow channel plate 1 to realize multiple thermal management working modes.

[0037] See also Figure 6a-6c , Figure 6a-6c Schematic diagram of the structure of various embodiments of the thermal management system of the present application. The thermal management system 10 of the present application includes the thermal management integrated unit 2 of the above-mentioned embodiment, and also includes a three-way valve 3, an electric drive unit 4, a battery unit 5, a cooler 6 and a radiator 7. Figure 6a-6c It 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, and 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 kettle 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.

[0038] Figure 6a-6c The dashed line indicates that it is not connected to the circuit, and the arrow indicates the flow direction of the coolant. Figure 6a This is the state of the electric drive unit 4 waste heat utilization mode of the thermal management system 10. In the waste heat utilization mode of the electric drive unit 4, the first valve port 241 of the five-way valve 24 is connected to the fourth valve port 244, the second valve port 242 of the five-way valve 24 is connected to the third valve port 243, and the radiator 7 is not connected to the circuit. In this mode, the coolant passes through the battery unit 5 and the five-way valve 24, flows through the electric drive unit 4, and then passes through the five-way valve 24 again, and converges at the third valve port 243 of the five-way valve 24, and uses the cooler 6 to recover the heat of the electric drive and the battery for waste heat utilization.

[0039] Figure 6b This is the state of the electric drive unit 4 / battery unit 5 independent heat dissipation mode of the thermal management system 10. In the independent heat dissipation mode, the second valve port of the five-way valve 24 is connected to the fifth valve port, the fourth valve port of the five-way valve 24 is connected to the third valve port, and the radiator 7 is connected to the cooling circuit of the electric drive unit 4. In this mode, the battery unit 5, the five-way valve 24, the battery water pump 23 and the cooler 6 form a battery cooling circuit, and the electric drive unit 4, the five-way valve 24, the radiator 7 and the motor water pump 22 form a motor cooling circuit, and the two independently dissipate heat.

[0040] Figure 6c This is the state of the thermal management system 10 in the series heat dissipation mode. In the series heat dissipation mode, the fourth valve port 244 of the five-way valve 24 is connected to the fifth valve port 245, and the second valve port 242 of the five-way valve 24 is connected to the third valve port 243. In this mode, the battery cooling circuit and the motor cooling circuit are connected in series.

[0041] Through the above configuration, the thermal management system 10 of the present application can achieve multiple thermal management working modes.

[0042] The present application also provides a vehicle, comprising the thermal management integrated unit 2 of any embodiment, suitable for an electric vehicle.

[0043] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A flow channel plate, characterized in that: The flow channel plate has a first flow channel and a second flow channel, wherein the first flow channel includes a liquid replenishing port for communicating with an expansion kettle; The flow channel plate also has a connecting channel therein, and the first flow channel and the second flow channel are connected to each other through the connecting channel.

2. The flow channel plate according to claim 1, characterized in that: A flow resistance structure is arranged in the connecting channel.

3. The flow channel plate according to claim 2, characterized in that: The connecting channel includes a first sub-channel and a second sub-channel that are connected to each other. One end of the first sub-channel is connected to the first flow channel, and one end of the second sub-channel is connected to the second flow channel.

4. The flow channel plate according to claim 3, characterized in that: The flow resistance structure comprises a first flow resistance structure, and the first flow resistance structure is located in the second sub-channel; The first flow resistance structure includes at least one first flow resistance plate, and the first flow resistance plate includes a connecting end and a free end, the connecting end is connected to the inner wall of the second sub-channel, and the free end extends into the second sub-channel.

5. The flow channel plate according to claim 4, characterized in that: There are multiple first spoilers, which are arranged at intervals along a first direction, and are alternately arranged on two side walls of the second sub-channel that are opposite to each other along the first direction, wherein the first direction is the extension direction of the second sub-channel.

6. The flow channel plate according to claim 4, characterized in that: The free end of the first spoiler extends toward a side away from the second flow channel.

7. The flow channel plate according to claim 3, characterized in that: The flow resistance structure includes a second flow resistance structure, and the second flow resistance structure is located in the first sub-channel; The second flow resistance structure includes at least one second flow blocking plate, the edge of the second flow blocking plate is connected to the inner wall of the first sub-channel, and the second flow blocking plate is provided with at least one through hole.

8. The flow channel plate according to claim 7, characterized in that: There are multiple second spoiler plates, which are spaced apart along the second direction, and the through holes on two adjacent second spoiler plates are staggered.

9. A thermal management integrated unit, characterized in that: include: The flow channel plate according to any one of claims 1 to 8; An expansion kettle, the expansion kettle comprising a water outlet, the water outlet being connected to the liquid infusion port; a motor water pump, disposed on the flow channel plate, the motor water pump being connected to an end of one of the first flow channel and the second flow channel away from the expansion kettle; a battery water pump, disposed on the flow channel plate, the battery water pump being connected to an end of one of the first flow channel and the second flow channel away from the expansion kettle; A valve is arranged on the flow channel plate, and the valve is connected with the first flow channel and the second flow channel.

10. A vehicle, characterized in that: Comprising the thermal management integrated unit as claimed in claim 9.

Images