Heat exchange plate, heat exchanger, battery heat management system and vehicle

Abstract

The utility model belongs to the technical field of heat exchange of components, and particularly relates to a heat exchange plate, a heat exchanger, a battery heat management system and a vehicle. The heat exchange plate comprises a plate body, a flow channel, a first connector cavity and a second connector cavity are integrally formed in the plate body, the flow channel is provided with a first opening and a second opening, the first opening penetrates through the first connector cavity in the extending direction of the flow channel, and the second opening penetrates through the second connector cavity in the extending direction of the flow channel. The first connector cavity and the first opening are linearly arranged, and the second connector cavity and the second opening are linearly arranged. One of the first joint cavity and the second joint cavity is used for feeding liquid, and the other one is used for discharging liquid. The total pressure drop of the heat exchange plate is reduced, the heat exchange temperature difference between the heat exchange plate and the part to be subjected to heat exchange is increased, and the heat exchange efficiency is higher. Meanwhile, the temperature and the pressure at the outlet of the heat exchange plate are closer to those in the flow channel, the accuracy of temperature and pressure detection in the flow channel is improved, and logic control and cooling capacity adjustment of the battery heat management system are better facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange of components, and particularly relates to a heat exchange plate, a heat exchanger, a battery thermal management system and a vehicle. Background Art

[0002] In related technologies, a heat exchanger includes an air conditioner and a heat exchange plate. The heat exchange plate is provided with connectors, and right-angle channels are arranged inside the connectors. The connectors are used to connect the pipelines of the air conditioner, so that the refrigerant can be introduced into the flow channels of the heat exchange plate to realize internal flow and take away the battery heat.

[0003] For a direct cooling and direct heating power battery thermal management system, a pressure and temperature sensor is usually arranged in the outlet pipeline of the heat exchange plate. The rotation speed of the compressor is adjusted by detecting the refrigerant pressure at the outlet of the heat exchanger to realize the dynamic adjustment of the cooling capacity, that is: when the refrigerant pressure at the outlet is higher than the set value, the rotation speed of the compressor is increased; when the refrigerant pressure at the outlet is lower than the set value, the rotation speed of the compressor is decreased.

[0004] However, for the above heat exchanger, due to the large flow resistance of the right-angle channels arranged in the connectors to the fluid, the pressure drop of the refrigerant flowing through the connectors is large. The pressure value of the refrigerant inside the heat exchange plate is significantly higher than the pressure value detected at the outlet of the heat exchange plate, and the temperature inside the heat exchange plate is significantly higher than the temperature detected at the outlet of the heat exchange plate. The actual heat exchange temperature difference between the heat exchange plate and the battery is reduced, resulting in inaccurate pressure and temperature data of the inside of the monitored heat exchange plate, and further reducing the heat exchange capacity of the heat exchange plate for the battery, which is not conducive to the adjustment of the cooling capacity of the battery thermal management system. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: aiming at the problem that for the existing heat exchanger, the pressure drop of the refrigerant flowing through the connectors is large, resulting in inaccurate pressure and temperature data of the inside of the monitored heat exchange plate, and further reducing the heat exchange capacity of the heat exchange plate for the battery, which is not conducive to the adjustment of the cooling capacity of the battery thermal management system, a heat exchange plate, a heat exchanger, a battery thermal management system and a vehicle are provided.

[0006] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a heat exchange plate, which includes a plate body. A flow channel, a first connector cavity and a second connector cavity are integrally formed in the plate body. The flow channel has a first opening and a second opening. The first opening penetrates through the first connector cavity along the extension direction of the flow channel where it is located, and the second opening penetrates through the second connector cavity along the extension direction of the flow channel where it is located. The first connector cavity and the first opening are arranged in a straight line, and the second connector cavity and the second opening are arranged in a straight line;

[0007] One of the first connector cavity and the second connector cavity is used for the liquid inlet of the heat exchange plate, and the other is used for the liquid outlet of the heat exchange plate.

[0008] Optionally, the plate body includes a flow channel plate and a heat spreader plate. The flow channel plate is pressed on the heat spreader plate, and a flow channel, a first joint cavity, and a second joint cavity are formed by enclosing between the bottom side surface of the flow channel plate and the top side surface of the heat spreader plate.

[0009] Optionally, at least part of the first joint cavity is formed on the flow channel plate, and the remaining part of the first joint cavity is formed on the heat spreader plate;

[0010] At least part of the second joint cavity is formed on the flow channel plate, and the remaining part of the second joint cavity is formed on the heat spreader plate.

[0011] Optionally, a first joint groove and a second joint groove with openings facing the heat spreader plate side are integrally stamped on the flow channel plate, and a third joint groove and a fourth joint groove with openings facing the flow channel plate are integrally formed on the heat spreader plate;

[0012] The first joint groove and the third joint groove jointly enclose to form the first joint cavity, and the second joint groove and the fourth joint groove jointly enclose to form the second joint cavity.

[0013] Optionally, the flow channel plate and the heat spreader plate are fixed by welding.

[0014] Optionally, a flow channel groove with an opening facing the heat spreader plate is integrally formed on the flow channel plate, and the top side surface of the heat spreader plate covers the opening of the flow channel groove, so that the flow channel is formed by enclosing between the top side surface of the heat spreader plate and the flow channel groove.

[0015] Optionally, a heat exchange plane is provided on the side surface of the heat spreader plate facing away from the flow channel plate, and the heat exchange plane is adapted to be fixed on the surface of the battery pack of the vehicle.

[0016] Optionally, a flow channel fixing plate is provided on one side of the flow channel plate corresponding to the position of the first joint cavity or the second joint cavity, and the flow channel fixing plate extends in a direction away from the heat spreader plate;

[0017] A heat spreader fixing plate is provided on one side of the heat spreader plate corresponding to the position of the first joint cavity or the second joint cavity, and the heat spreader fixing plate extends in a direction away from the flow channel plate;

[0018] The flow channel fixing plate is adapted to be connected to a pipeline pressing plate in the heat exchanger through a horizontally arranged first connecting member, and the heat spreader fixing plate is adapted to be connected to a pipeline pressing plate in the heat exchanger through a horizontally arranged second connecting member.

[0019] Optionally, the depths of both the first joint cavity and the second joint cavity are greater than the depth of the flow channel;

[0020] The first joint cavity includes a first cylindrical section and a first transition section connected to an axial end of the first cylindrical section. The first transition section inclines towards the central axis direction of the first cylindrical section in a direction away from the first cylindrical section, and the first opening is provided at an end of the first transition section away from the first cylindrical section.

[0021] The second joint cavity includes a second cylindrical section and a second transition section connected to an axial end of the second cylindrical section. The second transition section inclines towards the central axis direction of the second cylindrical section in a direction away from the second cylindrical section, and the second opening is provided at an end of the second transition section away from the second cylindrical section.

[0022] On the other hand, an embodiment of the present invention provides a heat exchanger, including a first pipeline, a second pipeline, and the above-mentioned heat exchange plate. One end of the first pipeline is installed in the first joint cavity, and one end of the second pipeline is installed in the second joint cavity.

[0023] Optionally, it further includes a first sealing joint and a second sealing joint. An end of the first pipeline inserted into the first joint cavity is inserted on the first sealing joint. A first sealing groove is provided on the outer peripheral surface of the first sealing joint, and a first sealing ring is installed in the first sealing groove.

[0024] An end of the second pipeline inserted into the second joint cavity is inserted on the second sealing joint. A second sealing groove is provided on the outer peripheral surface of the second sealing joint, and a second sealing ring is installed in the second sealing groove.

[0025] Optionally, multiple first sealing rings are provided, and the multiple first sealing rings are spaced apart along the extending direction of the first pipeline.

[0026] Multiple second sealing rings are provided, and the multiple second sealing rings are spaced apart along the extending direction of the second pipeline.

[0027] Optionally, it further includes a pipeline pressing plate. The pipeline pressing plate is provided with a first through hole for the first pipeline to pass through, and / or a second through hole for the second pipeline to pass through. The pipeline pressing plate is fixed on the plate body.

[0028] Optionally, the first joint cavity and the second joint cavity are located on the same side of the heat exchange plate, and the first through hole and the second through hole are provided on the same pipeline pressing plate.

[0029] On the other hand, an embodiment of the present invention provides a battery thermal management system, including a heat exchange source and the above-mentioned heat exchanger. The heat exchange source is connected between the first pipeline and the second pipeline, and the heat exchange plate is adapted to exchange heat with a battery pack.

[0030] Optionally, it further includes a first temperature and pressure sensor and a second temperature and pressure sensor. The first temperature and pressure sensor is installed at the end of the first pipeline connecting to the first joint cavity for monitoring the temperature and pressure at the first opening.

[0031] The second temperature and pressure sensor is installed at the end of the second pipeline connecting to the second joint cavity for monitoring the temperature and pressure at the second opening.

[0032] On the other hand, an embodiment of the present invention provides a vehicle, including a battery pack and the above-mentioned battery thermal management system.

[0033] In the heat exchanger of the present invention, a first joint cavity and a second joint cavity are integrally formed in the plate body. The first pipeline is directly inserted into the first joint cavity, and the second pipeline is directly inserted into the second joint cavity. Since the first opening of the flow channel penetrates the first joint cavity along the extension direction of the flow channel where it is located, and the second opening of the flow channel penetrates the second joint cavity along the extension direction of the flow channel where it is located, and the first opening and the first joint cavity are linearly arranged, and the second opening and the second joint cavity are linearly arranged. Therefore, the fluid conveyed by the first pipeline can flow into or out of the first opening without changing direction, and the fluid conveyed by the second pipeline can flow into or out of the second opening without changing direction, so as to reduce the total pressure drop of the fluid flowing through the heat exchange plate, increase the heat exchange temperature difference between the heat exchange plate and the parts to be heat exchanged, and make the heat exchange efficiency higher. At the same time, it also makes the temperature and pressure at the outlet of the heat exchange plate closer to the temperature and pressure in the flow channel, so as to improve the accuracy of the temperature and pressure detection in the flow channel, obtain a more accurate heat exchange temperature difference between the heat exchange plate and the parts to be heat exchanged, which is more conducive to the logic control and cooling capacity adjustment of the battery thermal management system, and dynamically adjust the conveying amount of the heat exchange source in time to keep the heat exchange plate in good heat exchange capacity and improve the thermal management performance of the battery thermal management system. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of a heat exchanger provided by an embodiment of the present invention;

[0035] Figure 2 is Figure 1 a sectional view of

[0036] Figure 3 is Figure 1 an exploded view of

[0037] Figure 4 is Figure 1 an exploded view from another perspective.

[0038] The reference numerals in the specification are as follows:

[0039] 100, heat exchange plate; 101, first joint cavity; 102, first opening; 103, first cylindrical section; 104, first transition section; 1, flow channel plate; 11, first joint groove; 12, second joint groove; 13, flow channel groove; 14, flow channel fixing plate; 2, heat dissipation plate; 21, third joint groove; 22, fourth joint groove; 23, heat dissipation fixing plate; 24, heat exchange plane; 3, first pipeline; 4, second pipeline; 5, first sealing joint; 51, sealing section; 52, flange section; 6, second sealing joint; 7, pipeline pressing plate; 8, first bolt; 9, second bolt. Detailed implementation manners

[0040] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0041] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a heat exchanger, including a first pipeline 3, a second pipeline 4 and a heat exchange plate 100. The heat exchange plate 100 includes a plate body, in which a flow channel, a first joint cavity 101 and a second joint cavity (not marked in the figure) are integrally formed. The flow channel has a first opening 102 and a second opening. The first opening 102 penetrates the first joint cavity 101 along the extension direction of the flow channel where it is located, and the second opening penetrates the second joint cavity along the extension direction of the flow channel where it is located. The first joint cavity 101 and the first opening 102 are arranged in a straight line, and the second joint cavity and the second opening are arranged in a straight line.

[0042] One end of the first pipeline 3 is installed in the first joint cavity 101, one end of the second pipeline 4 is installed in the second joint cavity. The other ends of the first pipeline 3 and the second pipeline 4 are adapted to be connected to a heat exchange source. One of the first joint cavity 101 and the second joint cavity is used for the liquid inlet of the heat exchange plate 100, and the other is used for the liquid outlet of the heat exchange plate 100, so that the cold or heat of the heat exchange source can flow into the flow channel in the heat exchange plate 100, exchange heat with the parts to be heat-exchanged when flowing in the flow channel, and finally flow out of the flow channel.

[0043] Since the first joint cavity 101 and the second joint cavity are integrally formed in the plate body, it is equivalent to that the present utility model cancels the setting of joints, and the pipelines are directly inserted into the plate body without passing through joints, reducing the welding process, reducing the leakage risk and reducing the cost. At the same time, the occupied volume of the structure of the first joint cavity 101 and the second joint cavity integrally formed in the plate body is relatively small, which can improve the space utilization rate inside the battery pack.

[0044] Moreover, the first joint cavity 101 and the first opening 102 are arranged in a straight line, the second joint cavity and the second opening are arranged in a straight line, and the flow direction of the fluid remains unchanged when flowing through the first joint cavity 101 and remains unchanged when flowing through the second joint cavity. This makes the pressure drop of the fluid flowing through the first joint cavity 101 and the second joint cavity smaller, thereby reducing the total pressure drop of the heat exchange plate 100 and enhancing the heat exchange capacity of the heat exchange plate 100. The reduction of the total pressure drop of the heat exchange plate 100 also makes the temperature and pressure at the outlet of the heat exchange plate 100 closer to the temperature and pressure in the flow channel, so as to improve the accuracy of temperature and pressure detection in the flow channel, obtain a more accurate heat exchange temperature difference between the heat exchange plate 100 and the parts to be heat exchanged, and is more conducive to the logic control and cooling capacity adjustment of the battery thermal management system, so as to be able to dynamically adjust the delivery volume of the heat exchange source in a timely manner to keep the heat exchange plate 100 in good heat exchange capacity and improve the thermal management performance of the battery thermal management system.

[0045] It should be noted that the applicable scenarios of this heat exchanger include, but are not limited to, the fields of power battery thermal management, consumer electronics, energy storage, household appliances, etc.

[0046] In the heat exchanger of the present utility model, a first joint cavity 101 and a second joint cavity are integrally formed in the plate body, the first pipeline 3 is directly inserted into the first joint cavity 101, and the second pipeline 4 is directly inserted into the second joint cavity. Since the first opening 102 of the flow channel penetrates the first joint cavity 101 along the extension direction of the flow channel where it is located, the second opening of the flow channel penetrates the second joint cavity along the extension direction of the flow channel where it is located, and the first opening 102 and the first joint cavity 101 are arranged in a straight line, and the second opening and the second joint cavity are arranged in a straight line. Therefore, the fluid conveyed by the first pipeline 3 can flow into or out of the first opening 102 without changing the direction, and the fluid conveyed by the second pipeline 4 can flow into or out of the second opening without changing the direction, so as to reduce the total pressure drop of the fluid flowing through the heat exchange plate 100, increase the heat exchange temperature difference between the heat exchange plate 100 and the parts to be heat exchanged, and make the heat exchange efficiency higher. At the same time, it also makes the temperature and pressure at the outlet of the heat exchange plate 100 closer to the temperature and pressure in the flow channel, so as to improve the accuracy of temperature and pressure detection in the flow channel, obtain a more accurate heat exchange temperature difference between the heat exchange plate 100 and the parts to be heat exchanged, and is more conducive to the logic control and cooling capacity adjustment of the battery thermal management system, and dynamically adjust the delivery volume of the heat exchange source in a timely manner to keep the heat exchange plate 100 in good heat exchange capacity and improve the thermal management performance of the battery thermal management system.

[0047] In one embodiment, a first sealing joint 5 and a second sealing joint 6 are further included. The end of the first pipeline 3 inserted into the first joint cavity 101 is inserted on the first sealing joint 5. A first sealing groove is provided on the outer peripheral surface of the first sealing joint 5, and a first sealing ring is installed in the first sealing groove, which is beneficial to ensuring the sealing fit between the first pipeline 3 and the plate body.

[0048] The end of the second pipeline 4 inserted into the second joint cavity is inserted onto the second sealing joint 6. A second sealing groove is provided on the outer peripheral surface of the second sealing joint 6, and a second sealing ring is installed in the second sealing groove, which is beneficial to ensuring the sealing fit between the second pipeline 4 and the plate body.

[0049] In one embodiment, a plurality of first sealing rings are provided, and the plurality of first sealing rings are spaced apart along the extending direction of the first pipeline 3.

[0050] A plurality of second sealing rings are provided, and the plurality of second sealing rings are spaced apart along the extending direction of the second pipeline 4.

[0051] In one embodiment, it further includes a pipeline pressing plate 7. The pipeline pressing plate 7 is provided with a first through hole for the first pipeline 3 to pass through, and / or a second through hole for the second pipeline 4 to pass through. The pipeline pressing plate 7 is fixed on the plate body.

[0052] The shaking of the first pipeline 3 is restricted by the first through hole, and the shaking of the second pipeline 4 is restricted by the second through hole, which is beneficial to ensuring the tight fit between the pipeline and the plate body and reducing the leakage situation after the heat exchanger is used for a long time.

[0053] In one embodiment, the first sealing joint 5 includes a sealing section 51 and a flange section 52 connected to one end of the sealing section 51. The sealing section 51 and the end of the first pipeline 3 are installed in the first joint cavity 101, and the side surface of the flange section 52 close to the sealing section 51 abuts against the plate body.

[0054] The first through hole is a U-shaped hole, and the first through hole has an opening facing the top side of the pipeline pressing plate 7. The first pipeline 3 is inserted into the first through hole from the top side opening of the first through hole.

[0055] In one embodiment, as Figures 2 to 4 shown, the plate body includes a flow channel plate 1 and a temperature equalizing plate 2. The flow channel plate 1 is pressed on the temperature equalizing plate 2. A flow channel, a first joint cavity 101 and a second joint cavity are formed by enclosing between the bottom side surface of the flow channel plate 1 and the top side surface of the temperature equalizing plate 2. Since the flow channel, the first joint cavity 101 and the second joint cavity are formed by enclosing between the bottom side surface of the flow channel plate 1 on the temperature equalizing plate 2 and the top side surface of the temperature equalizing plate 2, therefore, the structures of the flow channel, the first joint cavity 101 and the second joint cavity can be exposed outside the flow channel plate 1 and the temperature equalizing plate 2, which is convenient for processing, improves production efficiency and reduces costs.

[0056] In one embodiment, the flow channel plate 1 and the temperature equalizing plate 2 are aluminum plates, and the temperature equalizing plate 2 and the flow channel plate 1 are formed by stamping.

[0057] In one embodiment, at least part of the first joint cavity 101 is formed on the flow channel plate 1, and the remaining part of the first joint cavity 101 is formed on the heat spreader 2. Compared with the case where the entire first joint cavity 101 is formed on the flow channel plate 1 or the heat spreader 2, such a design can reduce the structural complexity of the flow channel plate 1 and the heat spreader 2 and facilitate processing.

[0058] At least part of the second joint cavity is formed on the flow channel plate 1, and the remaining part of the second joint cavity is formed on the heat spreader 2. Compared with the case where the entire second joint cavity is formed on the flow channel plate 1 or the heat spreader 2, such a design can reduce the structural complexity of the flow channel plate 1 and the heat spreader 2 and facilitate processing.

[0059] In one embodiment, a first joint groove 11 and a second joint groove 12 with openings facing the heat spreader 2 are integrally stamped on the flow channel plate 1, and a third joint groove 21 and a fourth joint groove 22 with openings facing the flow channel plate 1 are integrally stamped on the heat spreader 2. The first joint groove 11 and the third joint groove 21 jointly enclose to form the first joint cavity 101, and the second joint groove 12 and the fourth joint groove 22 jointly enclose to form the second joint cavity.

[0060] Both the first joint groove 11 and the second joint groove 12 are of an open structure with openings penetrating one side surface of the flow channel plate 1, so that the first joint groove 11 and the second joint groove 12 can be stamped out together when stamping the flow channel plate 1.

[0061] Both the third joint groove 21 and the fourth joint groove 22 are of an open structure with openings penetrating the top side surface of the heat spreader 2, so that the third joint groove 21 and the fourth joint groove 22 can be stamped out together when stamping the heat spreader 2.

[0062] In one embodiment, the first joint groove 11 and the third joint groove 21 have the same shape, both being semi-cylindrical.

[0063] In one embodiment, the second joint groove 12 and the fourth have the same shape, both being semi-cylindrical.

[0064] In one embodiment, the flow channel plate 1 and the heat spreader 2 are fixedly welded together.

[0065] In one embodiment, integral brazing is adopted between the flow channel plate 1 and the heat spreader 2.

[0066] In one embodiment, a flow channel groove 13 with an opening facing the heat spreader 2 is integrally formed on the flow channel plate 1, and the top side surface of the heat spreader 2 covers the opening of the flow channel groove 13, so that a flow channel is enclosed between the top side surface of the heat spreader 2 and the flow channel groove 13 to simplify the structure of the heat spreader 2.

[0067] In one embodiment, one side surface of the heat pipe 2 facing away from the flow channel plate 1 has a heat exchange plane 24, and the heat exchange plane 24 is adapted to be fixed on the surface of the battery pack of the vehicle. The heat exchange plane 24 can be in better thermal contact with the surface of the battery pack, improving the heat exchange efficiency with the battery pack.

[0068] In one embodiment, a flow channel fixing plate 14 is provided on one side of the flow channel plate 1 corresponding to the position of the first joint cavity 101 or the second joint cavity, and the flow channel fixing plate 14 extends in a direction away from the heat pipe 2.

[0069] A heat pipe fixing plate 23 is provided on one side of the heat pipe 2 corresponding to the position of the first joint cavity 101 or the second joint cavity, and the heat pipe fixing plate 23 extends in a direction away from the flow channel plate 1.

[0070] The flow channel fixing plate 14 is connected to the pipeline pressing plate 7 through a horizontally arranged first connecting member, and the heat pipe fixing plate 23 is connected to the pipeline pressing plate 7 through a horizontally arranged second connecting member.

[0071] Since the flow channel plate 1 extends in a direction away from the heat pipe 2, the heat pipe fixing plate 23 extends in a direction away from the flow channel plate 1, and the first pipeline 3 and the second pipeline 4 are inserted through the pipeline pressing plate 7. Therefore, after the first pipeline 3 is inserted into the first joint cavity 101 or the second pipeline 4 is inserted into the second joint cavity, the pipeline pressing plate 7 can be abutted against the flow channel fixing plate 14 and / or the heat pipe fixing plate 23, so that the horizontally arranged first connecting member can connect the flow channel fixing plate 14 and the pipeline pressing plate 7, and / or the horizontally arranged second connecting member can connect the heat pipe fixing plate 23 and the pipeline pressing plate 7.

[0072] In one embodiment, the first joint cavity 101 and the second joint cavity are located on the same side of the heat exchange plate 100, the first through hole and the second through hole are provided on the same pipeline pressing plate 7, and the flow channel fixing plate 14 and the heat pipe fixing plate 23 are connected to the same pipeline pressing plate 7.

[0073] In one embodiment, only one first joint cavity 101 and one second joint cavity are provided.

[0074] In other embodiments, the number of the first joint cavity 101 or the second joint cavity can be adjusted according to actual requirements.

[0075] In one embodiment, the first connecting member includes a first bolt 8 and a first nut. A first connecting hole penetrating along the opening direction of the first opening 102 is provided on the pipeline pressing plate 7, and a first through hole corresponding to and communicating with the first connecting hole is provided on the flow channel fixing plate 14. The rod portion of the first bolt 8 sequentially passes through the first connecting hole and the first through hole and is fastened by the first nut, so that the pipeline fixing plate is fixedly connected to the flow channel fixing plate 14.

[0076] The second connecting member includes a second bolt 9 and a second nut. A second connecting hole penetrating along the opening direction of the second opening is provided on the pipeline pressing plate 7, and a second through hole corresponding to and communicating with the second connecting hole is provided on the temperature equalizing fixing plate 23. The rod portion of the second bolt 9 sequentially passes through the second connecting hole and the second through hole and is fastened by the second nut, so that the pipeline fixing plate is fixedly connected to the temperature equalizing fixing plate 23.

[0077] In one embodiment, an anti-corrosion coating is applied to the outer surface of the heat exchange plate 100 to prevent corrosion.

[0078] In one embodiment, anti-corrosion coatings are applied to the outer surfaces of the first bolt 8 and the second bolt 9 to prevent corrosion.

[0079] In one embodiment, the coating number of the anti-corrosion coating is an epoxy system.

[0080] In one embodiment, as Figure 2 shown, the depths of both the first joint cavity 101 and the second joint cavity are greater than the depth of the flow channel;

[0081] The first joint cavity 101 includes a first cylindrical section 103 and a first transition section 104 connected to an axial end of the first cylindrical section 103. The first transition section 104 inclines towards the central axis direction of the first cylindrical section 103 in the direction away from the first cylindrical section 103, and the first opening 102 is provided at one end of the first transition section 104 away from the first cylindrical section 103.

[0082] The second joint cavity includes a second cylindrical section and a second transition section connected to an axial end of the second cylindrical section. The second transition section inclines towards the central axis direction of the second cylindrical section in the direction away from the second cylindrical section, and the second opening is provided at one end of the second transition section away from the second cylindrical section.

[0083] The settings of the first transition section 104 and the second transition section can reduce the thinning rate during stamping of the flow channel plate 1 and the temperature equalizing plate 2, and reduce the local pressure loss when the fluid passes through the first joint cavity 101 and the second joint cavity.

[0084] It should be noted that the second joint cavity has the same shape as the first joint cavity 101, but different dimensions.

[0085] In other embodiments, the heat exchange plate 100 can be a harmonica microchannel cold plate, an extruded cold plate, a blown cold plate, etc.

[0086] In other embodiments, the first joint cavity 101 can be integrally formed on the flow channel plate 1 or the temperature equalizing plate 2, and the second joint cavity can be integrally formed on the flow channel plate 1 or the temperature equalizing plate 2. At this time, the thickness of the part of the raw material of the flow channel plate 1 or the temperature equalizing plate 2 where the first joint cavity 101 and the second joint cavity are provided is relatively thick.

[0087] In other embodiments, a part of the first joint cavity 101 along its axial direction can be formed on the flow channel plate 1, and another part along its axial direction can be formed on the heat dissipation plate 2.

[0088] A part of the second joint cavity along its axial direction can be formed on the flow channel plate 1, and another part along its axial direction can be formed on the heat dissipation plate 2.

[0089] In other embodiments, the flow channel plate 1 and the heat dissipation plate 2 can be fixed by gluing.

[0090] In other embodiments, the flow channel grooves 13 can be arranged on the heat dissipation plate 2.

[0091] In other embodiments, the first connecting member or the second connecting member can be a rivet.

[0092] In other embodiments, the flow channel fixing plate 14 and the heat dissipation fixing plate 23 can be removed. The flow channel plate 1 and the pipeline pressing plate 7 can be fixed by clamping, and the heat dissipation plate 2 and the pipeline pressing plate 7 can be fixed by clamping.

[0093] In other embodiments, the first joint cavity 101 and the second joint cavity can be arranged on opposite sides or adjacent sides of the plate body.

[0094] In addition, an embodiment of the present utility model provides a heat exchange plate, the structure of which is the same as that of the heat exchange plate 100 in any of the above embodiments, and will not be elaborated here.

[0095] In addition, an embodiment of the present utility model provides a battery thermal management system, which includes a heat exchange source and the heat exchanger in any of the above embodiments. The heat exchange source is connected between the first pipeline 3 and the second pipeline 4, and the heat exchange plate 100 is adapted to exchange heat with the battery pack.

[0096] In one embodiment, the heat exchange source is an air conditioner, and the air conditioner is connected between the other end of the first pipeline 3 and the other end of the second pipeline 4.

[0097] When the heat exchanger is used for heat dissipation, the air conditioner is turned on to the cooling mode. The first pipeline 3 is the liquid inlet pipeline, and the second pipeline 4 is the liquid outlet pipeline. The refrigerant of the air conditioner is transported through the first pipeline 3 to flow into the flow channel from the first opening 102, flow in the flow channel to take away the heat of the battery pack, and then flow out from the second opening and be transported back to the air conditioner through the second pipeline 4.

[0098] When the heat exchanger is used for heating, the air conditioner is turned on to the heating mode. The first pipeline 3 is the liquid outlet pipeline, and the second pipeline 4 is the liquid inlet pipeline. The heat of the heat source is transported through the second pipeline 4 to flow into the flow channel from the second opening, flow in the flow channel to heat the battery pack, and then flow out from the second opening and be transported back to the air conditioner through the first pipeline 3.

[0099] In one embodiment, the refrigerant can be R134a, R410a or other refrigerants meeting environmental protection requirements.

[0100] In other embodiments, the heat exchange source can be a water pump.

[0101] In one embodiment, a first temperature and pressure sensor and a second temperature and pressure sensor are further included. The first temperature and pressure sensor is installed at the end of the first pipeline 3 connecting the first joint cavity 101 for monitoring the temperature and pressure at the first opening 102.

[0102] The second temperature and pressure sensor is installed at the end of the second pipeline 4 connecting the second joint cavity for monitoring the temperature and pressure at the second opening.

[0103] In addition, an embodiment of the present invention provides a vehicle, including a battery pack and the battery thermal management system in any of the above embodiments.

[0104] The jointless heat exchange plate 100 of the present invention has a flow resistance 39 kPa lower than that of the heat exchange plate 100 using a joint with a right-angle flow channel, can reduce the average temperature of the heat exchange plate 100 by about 2 °C, increase the heat exchange temperature difference between the heat exchange plate 100 and the parts to be heat-exchanged, make the heat exchange efficiency higher, reduce the temperature difference of the power battery, and reduce the energy consumption of the whole vehicle.

[0105] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat exchange plate, characterized in that: The heat exchange plate (100) comprises a plate body, wherein a flow channel, a first joint cavity (101) and a second joint cavity are integrally formed in the plate body, the flow channel has a first opening (102) and a second opening, the first opening (102) penetrates the first joint cavity (101) along the extension direction of the flow channel, the second opening penetrates the second joint cavity along the extension direction of the flow channel, the first joint cavity (101) and the first opening (102) are arranged in a straight line, and the second joint cavity and the second opening are arranged in a straight line; One of the first joint cavity (101) and the second joint cavity is used for liquid inlet to the heat exchange plate (100), and the other is used for liquid outlet from the heat exchange plate (100).

2. The heat exchange plate according to claim 1, characterized in that: The plate body comprises a flow channel plate (1) and a temperature balancing plate (2); the flow channel plate (1) is pressed onto the temperature balancing plate (2); the bottom surface of the flow channel plate (1) and the top surface of the temperature balancing plate (2) enclose the flow channel, the first joint cavity (101) and the second joint cavity.

3. The heat exchange plate according to claim 2, characterized in that: At least part of the first joint cavity (101) is formed on the flow channel plate (1), and the rest of the first joint cavity (101) is formed on the temperature equalizing plate (2); At least part of the second joint cavity is formed on the flow channel plate (1), and the rest of the second joint cavity is formed on the temperature equalizing plate (2).

4. The heat exchange plate according to claim 3, characterized in that: The flow channel plate (1) is stamped with a first joint groove (11) and a second joint groove (12) with openings facing one side of the temperature equalizing plate (2), and the temperature equalizing plate (2) is integrally formed with a third joint groove (21) and a fourth joint groove (22) with openings facing the flow channel plate (1); The first joint groove (11) and the third joint groove (21) together enclose the first joint cavity (101), and the second joint groove (12) and the fourth joint groove (22) together enclose the second joint cavity.

5. The heat exchange plate according to claim 2, characterized in that: The flow channel plate (1) and the temperature equalizing plate (2) are fixed by welding.

6. The heat exchange plate according to claim 2, characterized in that: The flow channel plate (1) is integrally formed with a flow channel groove (13) opening toward the temperature balancing plate (2); the top side surface of the temperature balancing plate (2) covers the opening of the flow channel groove (13), so that the top side surface of the temperature balancing plate (2) and the flow channel groove (13) are enclosed to form the flow channel.

7. The heat exchange plate according to claim 2, characterized in that: The surface of the temperature equalizing plate (2) on one side facing away from the flow channel plate (1) has a heat exchange plane (24), and the heat exchange plane (24) is suitable for being fixed on the surface of a battery pack of a vehicle.

8. The heat exchange plate according to claim 2, characterized in that: A flow channel fixing plate (14) is provided on one side of the flow channel plate (1) corresponding to the position of the first joint cavity (101) or the second joint cavity, and the flow channel fixing plate (14) extends in a direction away from the temperature uniform plate (2); A temperature-averaging fixed plate (23) is provided on one side of the temperature-averaging plate (2) corresponding to the position of the first joint cavity (101) or the second joint cavity, and the temperature-averaging fixed plate (23) extends in a direction away from the flow channel plate (1); The flow channel fixing plate (14) is suitable for connecting to the pipeline pressure plate (7) in the heat exchanger through a transversely arranged first connecting piece, and the temperature-averaging fixing plate (23) is suitable for connecting to the pipeline pressure plate (7) in the heat exchanger through a transversely arranged second connecting piece.

9. The heat exchange plate according to claim 2, characterized in that: The depths of the first joint cavity (101) and the second joint cavity are both greater than the depth of the flow channel; The first joint cavity (101) comprises a first cylindrical section (103) and a first transition section (104) connected to one axial end of the first cylindrical section (103); the first transition section (104) is inclined toward the central axis of the first cylindrical section (103) in a direction away from the first cylindrical section (103); and the first opening (102) is arranged at one end of the first transition section (104) away from the first cylindrical section (103); The second joint cavity includes a second cylindrical section and a second transition section connected to one axial end of the second cylindrical section, the second transition section is inclined toward the central axis of the second cylindrical section in a direction away from the second cylindrical section, and the second opening is arranged at one end of the second transition section away from the second cylindrical section.

10. A heat exchanger, characterized in that: It comprises a first pipeline (3), a second pipeline (4) and a heat exchange plate (100) according to any one of claims 1 to 9, one end of the first pipeline (3) is installed in the first joint cavity (101), and one end of the second pipeline (4) is installed in the second joint cavity.

11. The heat exchanger according to claim 10, characterized in that It also comprises a first sealing joint (5) and a second sealing joint (6), wherein the end of the first pipeline (3) inserted into the first joint cavity (101) is inserted into the first sealing joint (5), a first sealing groove is provided on the outer peripheral surface of the first sealing joint (5), and a first sealing ring is installed in the first sealing groove; The end of the second pipeline (4) inserted into the second joint cavity is inserted into the second sealing joint (6), and a second sealing groove is provided on the outer peripheral surface of the second sealing joint (6), and a second sealing ring is installed in the second sealing groove.

12. The heat exchanger according to claim 11, characterized in that A plurality of the first sealing rings are provided, and the plurality of the first sealing rings are distributed at intervals along the extension direction of the first pipeline (3); A plurality of the second sealing rings are provided, and the plurality of the second sealing rings are distributed at intervals along the extension direction of the second pipeline (4).

13. The heat exchanger according to claim 12, characterized in that It also comprises a pipeline pressing plate (7), on which a first through hole for the first pipeline (3) to pass through and / or a second through hole for the second pipeline (4) to pass through is provided, and the pipeline pressing plate (7) is fixed on the plate body.

14. The heat exchanger according to claim 13, characterized in that The first joint cavity (101) and the second joint cavity are located on the same side of the plate body, and the first through hole and the second through hole are arranged on the same pipeline pressing plate (7).

15. A battery thermal management system, characterized in that: It comprises a heat exchange source and the heat exchanger according to any one of claims 10 to 14, wherein the heat exchange source is connected between the first pipeline (3) and the second pipeline (4), and the heat exchange plate (100) is suitable for exchanging heat with a battery pack.

16. The battery thermal management system according to claim 15, characterized in that: It also includes a first temperature and pressure sensor and a second temperature and pressure sensor, wherein the first temperature and pressure sensor is installed at the end of the first pipeline (3) connected to the first joint cavity (101) and is used to monitor the temperature and pressure at the first opening (102); The second temperature and pressure sensor is installed at the end of the second pipeline (4) connected to the second joint cavity, and is used to monitor the temperature and pressure at the second opening.

17. A vehicle, characterized in that: It comprises a battery pack and the battery thermal management system as claimed in claim 15 or 16.

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