Plate heat exchanger and battery heat management system

Abstract

The embodiment of the utility model provides a plate heat exchanger and a battery heat management system, and relates to the field of heat exchangers. The plate heat exchanger comprises a plurality of first partition plates, a plurality of first partition covers, a plurality of second partition plates and a plurality of second partition covers. The first partition plates and the first partition covers are sequentially and alternately arranged in a stacked mode, and an upper overflowing channel and a first heat exchange cavity are formed. The second partition plates and the second partition covers are sequentially and alternately arranged in a stacked mode, and a lower overflowing channel and a second heat exchange cavity are formed. The lower overflowing channel communicates with the upper overflowing channel, the second heat exchange cavity communicates with the first heat exchange cavity, the upper overflowing channel and the lower overflowing channel communicate with a refrigerant, and the first heat exchange cavity and the second heat exchange cavity communicate with a coolant. The upper overflowing channel communicates with the lower overflowing channel and is in heat conduction connection with the first heat exchange cavity and the second heat exchange cavity at the same time, the heat exchange process and the heat exchange area of a coolant and a refrigerant are greatly improved, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and more specifically, to a plate heat exchanger and a battery thermal management system. Background Technology

[0002] When plate heat exchangers are used in battery thermal management systems, refrigerant and coolant exchange heat in the plate heat exchanger, and the low-temperature coolant passes through the loop to cool the battery module.

[0003] Traditional plate heat exchangers suffer from poor heat exchange performance and low heat exchange efficiency due to the short heat exchange process between the coolant and refrigerant and the small heat exchange contact area. Utility Model Content

[0004] This invention provides a plate heat exchanger and a battery thermal management system, which can solve the problem of low heat exchange efficiency in existing plate heat exchangers.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a plate heat exchanger, which includes:

[0007] Multiple first partitions and multiple first partition covers are arranged alternately in sequence. The multiple first partitions and multiple first partition covers form a first heat exchange chamber and a tortuous upper flow channel. The upper flow channel is isolated from the first heat exchange chamber but can exchange heat.

[0008] Multiple second partitions and multiple second partition covers are arranged alternately in sequence, forming a second heat exchange chamber and a tortuous, multi-segmented lower flow channel. The lower flow channel is isolated from the second heat exchange chamber but can exchange heat.

[0009] The lower flow passage is connected to the upper flow passage, the second heat exchange chamber is connected to the first heat exchange chamber, the upper flow passage and the lower flow passage are used to connect the refrigerant, and the first heat exchange chamber and the second heat exchange chamber are used to connect the coolant.

[0010] Optionally, the upper flow channel includes a first channel, a second channel, a third channel, a seventh channel, an eighth channel, and a ninth channel;

[0011] The lower flow passage includes the fourth channel, the fifth channel, and the sixth channel;

[0012] The first channel, second channel, third channel, fourth channel, fifth channel, sixth channel, seventh channel, eighth channel and ninth channel are connected in sequence.

[0013] Optionally, the axes of the first, third, fourth, sixth, seventh and ninth channels are all along the height direction of the heat exchanger, the third channel is aligned with and connected to the fourth channel, and the sixth channel is aligned with and connected to the seventh channel;

[0014] Both the second and eighth flow channels are arranged along the length of the heat exchanger. The two ends of the second flow channel are connected to the first and third channels, respectively, and the two ends of the eighth flow channel are connected to the seventh and ninth channels, respectively.

[0015] The fifth flow channel is U-shaped, and the plane of the U-shape is parallel to the second partition. The two ends of the U-shape of the fifth flow channel are connected to the fourth channel and the sixth channel, respectively.

[0016] Optionally, the first channel and the ninth channel are located at one end of the heat exchanger and are arranged at intervals along the width direction of the heat exchanger; the third channel, the fourth channel, the sixth channel and the seventh channel are located at the other end of the heat exchanger, with the fourth channel and the sixth channel arranged at intervals along the width direction of the heat exchanger.

[0017] Optionally, a first baffle is provided on the inner bottom surface of the first partition cover. The first baffle is arranged along the length of the heat exchanger and its two ends are connected to the baffle on the side of the first partition cover. The top surface of the first baffle is sealed to the outer bottom surface of the first partition. The first baffle divides the partition cavity formed by the first partition cover and the first partition into a second flow channel and an eighth flow channel.

[0018] A first protruding ridge is provided on the inner bottom surface of the first partition plate. The first protruding ridge is arranged along the length direction of the heat exchanger. The end of the first protruding ridge away from the first channel is connected to the baffle on the side of the first partition plate. The other end of the first protruding ridge is spaced apart from the baffle on the corresponding side of the first partition plate. The top surface of the first protruding ridge is connected to the outer bottom surface of the first partition cover. The first partition plate, the first partition cover and the first protruding ridge form the first heat exchange chamber.

[0019] Optionally, a second baffle is provided on the inner bottom surface of the second partition cover. The second baffle is arranged along the length of the heat exchanger. One end of the second baffle away from the first channel is connected to the baffle on the side of the second partition cover, and the other end of the second baffle is spaced apart from the baffle on the corresponding side of the second partition cover. The top surface of the second baffle is connected to the outer bottom surface of the second partition. The second partition, the second partition cover and the second baffle form a fifth flow channel.

[0020] A second protruding rib is provided on the inner bottom surface of the second partition plate. The second protruding rib is arranged along the length direction of the heat exchanger. The end of the second protruding rib away from the first channel is connected to the baffle on the side of the second partition plate. The other end of the second protruding rib is spaced apart from the baffle on the corresponding side of the second partition plate. The top surface of the second protruding rib is connected to the outer bottom surface of the second partition cover. The second partition plate, the second partition cover and the second protruding rib form the second heat exchange chamber.

[0021] Optionally, the first protruding rib and the first baffle are staggered in the width direction of the heat exchanger, and the second protruding rib and the second baffle are staggered in the width direction of the heat exchanger.

[0022] Optionally, the heat exchanger further includes a first heat exchange channel and a second heat exchange channel, which are spaced apart and axially along the height direction of the heat exchanger. Both the first heat exchange channel and the second heat exchange channel are located at the end of the heat exchanger away from the first channel.

[0023] Optionally, the first heat exchange chamber includes multiple parallel spaces, and / or the second heat exchange chamber also includes multiple parallel spaces, the first heat exchange channel communicates with the first heat exchange chamber and the second heat exchange chamber, and the second heat exchange channel communicates with the first heat exchange chamber and the second heat exchange chamber.

[0024] An embodiment of this utility model also provides a battery thermal management system, including the aforementioned plate heat exchanger.

[0025] The beneficial effects of the plate heat exchanger and battery thermal management system of this utility model embodiment include, for example:

[0026] The plate heat exchanger includes multiple first baffles and multiple first partition covers, multiple second baffles and multiple second partition covers, with the first baffles and multiple first partition covers arranged alternately in a sequential stacked manner. The multiple first baffles and multiple first partition covers form a first heat exchange chamber and a tortuous, multi-segmented upper flow channel. The upper flow channel is isolated from the first heat exchange chamber but is capable of heat exchange. Similarly, the multiple second baffles and multiple second partition covers are arranged alternately in a sequential stacked manner, forming a second heat exchange chamber and a tortuous, multi-segmented lower flow channel. The flow channel has a lower flow channel that is isolated from the second heat exchange chamber but allows for heat exchange. The lower flow channel is connected to the upper flow channel, and the second heat exchange chamber is connected to the first heat exchange chamber. When the upper and lower flow channels are connected to refrigerant, and the first and second heat exchange chambers are connected to coolant, the heat exchange process and heat exchange contact area between the coolant and refrigerant are greatly improved because the upper and lower flow channels are connected and simultaneously thermally connected to both the first and second heat exchange chambers, thereby increasing the heat exchange efficiency.

[0027] The battery thermal management system includes a plate heat exchanger, which has all the functions of a plate heat exchanger. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of the plate heat exchanger provided in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram showing the flow direction of the refrigerant in the plate heat exchanger provided in an embodiment of this utility model.

[0031] Figure 3 This is a top view schematic diagram of the plate heat exchanger provided in an embodiment of this utility model;

[0032] Figure 4 for Figure 3 A cross-sectional schematic diagram of AA in the middle;

[0033] Figure 5 for Figure 3 Cross-sectional schematic diagram of BB;

[0034] Figure 6 This is a second top view of the plate heat exchanger provided in an embodiment of the present invention;

[0035] Figure 7 for Figure 6 A cross-sectional view of CC.

[0036] Figure 8 for Figure 6 A cross-sectional schematic diagram of DD;

[0037] Figure 9 This is a schematic diagram of the structure of the first partition provided in an embodiment of the present utility model;

[0038] Figure 10 A schematic diagram of the structure of the first partition cover provided in the embodiments of this utility model;

[0039] Figure 11 This is a schematic diagram of the structure of the second partition provided in an embodiment of the present invention;

[0040] Figure 12 A schematic diagram of the structure of the second partition cover provided in an embodiment of this utility model.

[0041] Icons: 1-First partition; 101-First protruding ridge; 102-First hole; 103-Second hole; 104-Third hole; 105-Fourth hole; 106-Fifth hole; 107-Sixth hole; 108-First support; 2-First partition cover; 201-First baffle; 202-First through hole; 203-Second through hole; 204-Third through hole; 205-Fourth through hole; 206-Fifth through hole; 207-Sixth through hole; 3-Second partition; 301-Second protruding ridge; 302-Second mating hole; 303-Third mating hole; 304-Fifth mating hole; 305-Sixth mating hole; 306-Second support ; 4-Second partition cover; 401-Second baffle; 402-Second mating through hole; 403-Third mating through hole; 404-Fifth mating through hole; 405-Sixth mating through hole; 501-First channel; 502-Second flow channel; 503-Third channel; 504-Fourth channel; 505-Fifth flow channel; 506-Sixth channel; 507-Seventh channel; 508-Eighth flow channel; 509-Ninth channel; 510-First heat exchange channel; 511-Second heat exchange channel; 601-Inlet connector; 602-Outlet connector; 603-First connecting pipe; 604-Second connecting pipe; 7-Top cover; 8-Bottom cover. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0047] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0050] The present invention provides a plate heat exchanger and a battery thermal management system. The plate heat exchanger is used in the battery thermal management system, and will be described in detail below.

[0051] Please refer to Figures 1 to 8 The plate heat exchanger includes multiple first partitions 1, multiple second partitions 3, multiple first partition covers 2, and multiple second partition covers 4.

[0052] Multiple first partitions 1 and multiple first partition covers 2 are arranged alternately in a sequential stacked manner. The multiple first partitions 1 and multiple first partition covers 2 form a tortuous, multi-segmented upper flow channel and a first heat exchange chamber. The tortuous, multi-segmented upper flow channel is isolated from the first heat exchange chamber but can exchange heat. Multiple second partitions 3 and multiple second partition covers 4 are arranged alternately in a sequential stacked manner. The multiple second partitions 3 and multiple second partition covers 4 form a tortuous, multi-segmented lower flow channel and a second heat exchange chamber. The tortuous, multi-segmented lower flow channel is isolated from the second heat exchange chamber but can exchange heat. The lower flow channel is connected to the upper flow channel, and the second heat exchange chamber is connected to the first heat exchange chamber. The upper flow channel and the lower flow channel are used to connect the refrigerant, and the first heat exchange chamber and the second heat exchange chamber are used to connect the coolant. Since the upper flow channel is connected to the lower flow channel and simultaneously exchanges heat with the first heat exchange chamber and the second heat exchange chamber, the heat exchange process between the coolant and the refrigerant and the heat exchange contact area are greatly improved, thereby improving the heat exchange efficiency.

[0053] The upper flow channel includes a first channel 501, a second channel 502, a third channel 503, a seventh channel 507, an eighth channel 508, and a ninth channel 509; the lower flow channel includes a fourth channel 504, a fifth channel 505, and a sixth channel 506; the first channel 501, the second channel 502, the third channel 503, the fourth channel 504, the fifth channel 505, the sixth channel 506, the seventh channel 507, the eighth channel 508, and the ninth channel 509 are connected sequentially.

[0054] The axial directions of the first channel 501, third channel 503, fourth channel 504, sixth channel 506, seventh channel 507, and ninth channel 509 are all along the height direction of the heat exchanger. The third channel 503 is aligned with and connected to the fourth channel 504, and the sixth channel 506 is aligned with and connected to the seventh channel 507. The second flow channel 502 and the eighth flow channel 508 are both arranged along the length direction of the heat exchanger. The two ends of the second flow channel 502 are connected to the first channel 501 and the third channel 503, respectively, and the two ends of the eighth flow channel 508 are connected to the seventh channel 507 and the ninth channel 509, respectively. The fifth flow channel 505 is U-shaped, and the plane of the U-shape is parallel to the second partition 3. The two ends of the U-shape of the fifth flow channel 505 are connected to the fourth channel 504 and the sixth channel 506, respectively.

[0055] In this embodiment, the first channel 501 and the ninth channel 509 are located at one end of the heat exchanger and are arranged at intervals along the width direction of the heat exchanger; the third channel 503, the fourth channel 504, the sixth channel 506 and the seventh channel 507 are located at the other end of the heat exchanger, with the fourth channel 504 and the sixth channel 506 arranged at intervals along the width direction of the heat exchanger.

[0056] For more specific details, please refer to Figure 9 The first partition 1 is a rectangular plate with baffles around its perimeter. The first partition 1 is also provided with a first protruding ridge 101 and a first hole 102, a second hole 103, a third hole 104, a fourth hole 105, a fifth hole 106 and a sixth hole 107.

[0057] The first ridge 101 is arranged along the length of the heat exchanger. One end of the first ridge 101 away from the first channel 501 is connected to the baffle on the side of the first partition 1, and the other end of the first ridge 101 is spaced apart from the baffle on the corresponding side of the first partition 1. The top surface of the first ridge 101 is connected to the outer bottom surface of the first partition cover 2. The first partition 1, the first partition cover 2, and the first ridge 101 form a single-layer first heat exchange chamber. The first hole 102 and the fourth hole 105 are distributed on the same side of the first partition 1. The second hole 103, the third hole 104, the fifth hole 106, and the sixth hole 107 are distributed on the same side of the other end of the first partition 1. The second hole 103 and the fifth hole 106 are on the same side of the first ridge 101, and the third hole 104 and the sixth hole 107 are on the other side of the first ridge 101.

[0058] The openings of the first hole 102, the second hole 103, the third hole 104, and the fourth hole 105 are all designed as convex arches protruding towards the inner bottom surface of the first partition plate 1. The openings of the fifth hole 106 and the sixth hole 107 are all designed as convex arches protruding towards the outer bottom surface of the first partition plate 1. Multiple first holes 102, multiple second holes 103, multiple third holes 104, and multiple fourth holes 105 are stacked and connected to form a refrigerant flow channel, and multiple fifth holes 106 and multiple sixth holes 107 are stacked and connected to form a coolant flow channel. When manufacturing the first partition plate 1, it can be directly stamped or extruded together with the baffle of the side plate of the first partition plate 1.

[0059] The first partition 1 is also provided with a plurality of first supports 108. The first support 108 is a first protrusion protruding from the bottom surface of the first partition 1. The plurality of first protrusions can be evenly distributed. The first protrusions are connected to the first partition cover 2 to maintain the distance between the first partition 1 and the first partition cover 2.

[0060] refer to Figure 10 The first partition cover 2 is also a rectangular plate with baffles around it. The size and shape of the first partition cover 2 match the first partition 1, so that the first partition 1 can be connected to the first partition cover 2. Specifically, the connection point is the baffles around the first partition cover 2 and the baffles around the first partition 1.

[0061] A first baffle 201 is provided on the inner bottom surface of the first partition cover 2. The first baffle 201 is arranged along the length of the heat exchanger and its two ends are connected to the baffles on the side of the first partition cover 2, dividing the first partition cover 2 into left and right parts. The top surface of the first baffle 201 is sealed to the outer bottom surface of the first partition 1 above. The first baffle 201 divides the partition cavity formed by the first partition cover 2 and the first partition 1 into a second flow channel 502 and an eighth flow channel 508, which are isolated from each other.

[0062] The first partition cover 2 is also provided with a first through hole 202, a second through hole 203, a third through hole 204, a fourth through hole 205, a fifth through hole 206, and a sixth through hole 207. The first through hole 202 corresponds to and is connected to the first hole 102 on the first partition plate 1. The second through hole 203 corresponds to and is connected to the second hole 103 on the first partition plate 1. The third through hole 204 corresponds to and is connected to the third hole 104 on the first partition plate 1. The fourth through hole 205 corresponds to and is connected to the fourth hole 105 on the first partition plate 1. The fifth through hole 206 corresponds to and is connected to the fifth hole 106 on the first partition plate 1. The sixth through hole 207 corresponds to and is connected to the sixth hole 107 on the first partition plate 1.

[0063] Multiple first holes 102 are stacked and connected with multiple first through holes 202 to form a first channel 501; multiple second holes 103 are stacked and connected with multiple second through holes 203 to form a third channel 503; multiple third holes 104 are stacked and connected with multiple third through holes 204 to form a seventh channel 507; and multiple fourth holes 105 are stacked and connected with multiple fourth through holes 205 to form a ninth channel 509. The openings of the first through holes 202, second through holes 203, third through holes 204, and fourth through holes 205 all protrude from the outer bottom surface of the first partition cover 2, so that the edge of the first through hole 202 is sealed to the edge of the first hole 102, the edge of the second through hole 203 is sealed to the edge of the second hole 103, the edge of the third through hole 204 is sealed to the edge of the third hole 104, and the edge of the fourth through hole 205 is sealed to the edge of the fourth hole 105.

[0064] refer to Figure 11 Multiple second partitions 3 are located below the first partition 1. A second protruding rib 301 is provided on the inner bottom surface of the second partition 3. The second protruding rib 301 is arranged along the length of the heat exchanger. One end of the second protruding rib 301 away from the first channel 501 is connected to the baffle on the side of the second partition 3. The other end of the second protruding rib 301 is spaced apart from the baffle on the corresponding side of the second partition 3. The top surface of the second protruding rib 301 is connected to the outer bottom surface of the second partition cover 4. The second partition 3, the second partition cover 4 and the second protruding rib 301 form the second heat exchange chamber.

[0065] The second partition 3 is also provided with a second support 306 protruding towards its outer bottom surface, and the second support 306 is connected to the second partition cover 4. The second partition 3 is provided with a second docking hole 302 and a third docking hole 303. The second docking hole 302 corresponds to and is connected to the second hole 103 on the first partition 1 and the second through hole 203 on the first partition cover 2. The third docking hole 303 corresponds to and is connected to the third hole 104 on the first partition 1 and the third through hole 204 on the first partition cover 2. The second partition 3 is also provided with a fifth docking hole 304 and a sixth docking hole 305. The fifth docking hole 304 corresponds to and is connected to the fifth hole 106 on the first partition 1 and the fifth through hole 206 on the first partition cover 2. The sixth docking hole 305 corresponds to and is connected to the sixth hole 107 on the first partition 1 and the sixth through hole 207 on the first partition cover 2.

[0066] The shape and arrangement of the second partition 3 are the same as those of the first partition 1. The difference is that the second partition 3 is closed at the first hole 102 and the fourth hole 105 of the first partition 1.

[0067] refer to Figure 12 The shape and size of the second partition cover 4 match those of the second partition 3. The second partition cover 4 is also a rectangular plate with baffles connected around its perimeter. The baffles around the second partition cover 4 are connected to the baffles around the second partition 3. A second baffle 401 is provided on the inner bottom surface of the second partition cover 4. The second baffle 401 is arranged along the length of the heat exchanger. One end of the second baffle 401 away from the first channel 501 is connected to the baffle on the side of the second partition cover 4, and the other end of the second baffle 401 is spaced apart from the baffle on the corresponding side of the second partition cover 4. The second baffle 401 is higher than the inner bottom surface of the second partition cover 4, and the top surface of the second baffle 401 is connected to the outer bottom surface of the second partition 3.

[0068] The second partition cover 4 is arranged between the two second partitions 3. The second partition cover 4 has a second docking through hole 402, a third docking through hole 403, a fifth docking through hole 404, and a sixth docking through hole 405. The second docking through hole 402 corresponds to and is connected to the second docking hole 302 on the second partition 3. The third docking through hole 403 corresponds to and is connected to the third docking hole 303 on the second partition 3. The fifth docking through hole 404 corresponds to and is connected to the fifth docking hole 304 on the second partition 3. The sixth docking through hole 405 corresponds to and is connected to the sixth docking hole 305 on the second partition 3.

[0069] Multiple second docking holes 302 are stacked and connected with multiple second docking through holes 402 to form a fourth channel 504. Multiple third docking holes 303 are connected with multiple third docking through holes 403 to form a sixth channel 506. The second partition 3, the second partition cover 4, and the second baffle 401 form a fifth flow channel 505.

[0070] Furthermore, the first protruding rib 101 and the first baffle 201 are staggered in the width direction of the heat exchanger, and the second protruding rib 301 and the second baffle 401 are staggered in the width direction of the heat exchanger.

[0071] Reference again Figure 7 A first heat exchange channel 510 and a second heat exchange channel 511 are formed between multiple first partitions 1, multiple second partitions 3, multiple first partition covers 2, and multiple second partition covers 4. The first heat exchange channel 510 and the second heat exchange channel 511 are spaced apart and are axially along the height direction of the heat exchanger. Both the first heat exchange channel 510 and the second heat exchange channel 511 are located on the heat exchanger at the end away from the first channel 501.

[0072] The first heat exchange chamber and the second heat exchange chamber include multiple parallel spaces. The first heat exchange channel 510 is connected to both the multiple layers of the first heat exchange chamber and the multiple layers of the second heat exchange chamber. The second heat exchange channel 511 is connected to both the multiple layers of the first heat exchange chamber and the multiple layers of the second heat exchange chamber.

[0073] Specifically, the first heat exchange channel 510 is formed by stacking and connecting multiple fifth holes 106, multiple fifth through holes 206, multiple fifth docking holes 304 and multiple fifth docking through holes 404 simultaneously, and the second heat exchange channel 511 is formed by stacking and connecting multiple sixth holes 107, multiple sixth through holes 207, multiple sixth docking holes 305 and multiple sixth docking through holes 405 simultaneously.

[0074] In addition, the first channel 501 connects to the inlet connector 601, and the ninth channel 509 connects to the outlet connector 602. Both the inlet connector 601 and the outlet connector 602 can be equipped with pipe flanges. The first heat exchange channel 510 is connected to the first connecting pipe 603, and the second heat exchange channel 511 is connected to the second connecting pipe 604. The first connecting pipe 603 can be used to input coolant, and the second connecting pipe 604 can be used to output coolant. Since the opening of the second hole 103 on the first partition 1 protrudes towards the inner bottom surface of the first partition 1, and the opening of the second through hole 203 on the first partition cover 2 protrudes towards the outer bottom surface of the first partition cover 2, the second hole 103 and the second through hole 203 are sealed together. Similarly, the opening of the second docking hole 302 on the second partition 3 protrudes towards the inner bottom surface of the second partition 3, and the opening of the second docking through hole 402 on the second partition cover 4 protrudes towards the outer bottom surface of the second partition cover 4, the second docking hole 302 and the second docking through hole 402 are sealed together. The coolant flows in the first heat exchange chamber and the second heat exchange chamber to exchange heat with the refrigerant, and the coolant will not come into direct contact with the refrigerant.

[0075] The topmost first partition cover 2 is also connected to a top cover 7, which is a flat plate and covers the top of the first partition cover 2; the bottommost second partition cover 4 is also connected to a bottom cover 8, which is also a flat plate and covers the lower part of the second partition cover 4.

[0076] In the plate heat exchanger of this embodiment, the refrigerant enters from the first channel 501, flows sequentially through the second channel 502, the third channel 503, the fourth channel 504, the fifth channel 505, the sixth channel 506, the seventh channel 507, and the eighth channel 508, and finally exits from the ninth channel 509. Alternatively, the coolant can flow in from the first heat exchange channel 510, pass through the first heat exchange chamber and the second heat exchange chamber, and then exit from the second heat exchange channel 511. Of course, the coolant can also flow in from the second heat exchange channel 511 and exit from the first heat exchange channel 510.

[0077] The plate heat exchanger of this utility model embodiment distributes the refrigerant and coolant in multiple parallel spaces that are not interconnected. The refrigerant is evenly distributed in multiple parallel spaces, and the coolant has a large heat exchange contact area when exchanging heat with the refrigerant, thus improving the overall heat exchange efficiency.

[0078] An embodiment of this utility model also provides a battery thermal management system, including the above-mentioned plate heat exchanger, which has all the functions of a plate heat exchanger.

[0079] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A plate heat exchanger, characterized in that, include: Multiple first partitions (1) and multiple first partition covers (2) are arranged alternately in sequence. The multiple first partitions (1) and multiple first partition covers (2) form a first heat exchange chamber and a tortuous upper flow channel. The upper flow channel is isolated from the first heat exchange chamber and can exchange heat. Multiple second partitions (3) and multiple second partition covers (4) are arranged alternately in sequence. The multiple second partitions (3) and multiple second partition covers (4) form a second heat exchange chamber and a tortuous multi-segment lower flow channel. The lower flow channel is isolated from the second heat exchange chamber and can exchange heat. The lower flow channel is connected to the upper flow channel, the second heat exchange chamber is connected to the first heat exchange chamber, the upper flow channel and the lower flow channel are used to connect the refrigerant, and the first heat exchange chamber and the second heat exchange chamber are used to connect the coolant.

2. The plate heat exchanger according to claim 1, characterized in that, The upper flow channel includes a first channel (501), a second flow channel (502), a third channel (503), a seventh channel (507), an eighth flow channel (508), and a ninth channel (509); The lower flow channel includes a fourth channel (504), a fifth flow channel (505), and a sixth channel (506); The first channel (501), the second channel (502), the third channel (503), the fourth channel (504), the fifth channel (505), the sixth channel (506), the seventh channel (507), the eighth channel (508), and the ninth channel (509) are connected in sequence.

3. The plate heat exchanger according to claim 2, characterized in that, The first channel (501), the third channel (503), the fourth channel (504), the sixth channel (506), the seventh channel (507) and the ninth channel (509) are all axially along the height direction of the heat exchanger. The third channel (503) is aligned with and connected to the fourth channel (504), and the sixth channel (506) is aligned with and connected to the seventh channel (507). The second flow channel (502) and the eighth flow channel (508) are both arranged along the length of the heat exchanger. The two ends of the second flow channel (502) are respectively connected to the first channel (501) and the third channel (503), and the two ends of the eighth flow channel (508) are respectively connected to the seventh channel (507) and the ninth channel (509). The fifth flow channel (505) is U-shaped, and the plane of the U-shape is parallel to the second partition (3). The two ends of the U-shape of the fifth flow channel (505) are connected to the fourth channel (504) and the sixth channel (506) respectively.

4. The plate heat exchanger according to claim 2, characterized in that, The first channel (501) and the ninth channel (509) are located at one end of the heat exchanger and are arranged at intervals along the width direction of the heat exchanger; the third channel (503), the fourth channel (504), the sixth channel (506) and the seventh channel (507) are located at the other end of the heat exchanger, and the fourth channel (504) and the sixth channel (506) are arranged at intervals along the width direction of the heat exchanger.

5. The plate heat exchanger according to claim 2, characterized in that, The inner bottom surface of the first partition cover (2) is provided with a first baffle (201). The first baffle (201) is arranged along the length direction of the heat exchanger and its two ends are connected to the baffle on the side of the first partition cover (2). The top surface of the first baffle (201) is sealed to the outer bottom surface of the first partition (1). The first baffle (201) divides the partition cavity formed by the first partition cover (2) and the first partition (1) into the second flow channel (502) and the eighth flow channel (508). A first protruding rib (101) is provided on the inner bottom surface of the first partition (1). The first protruding rib (101) is provided along the length direction of the heat exchanger. One end of the first protruding rib (101) away from the first channel (501) is connected to the baffle on the side of the first partition (1). The other end of the first protruding rib (101) is spaced from the baffle on the corresponding side of the first partition (1). The top surface of the first protruding rib (101) is connected to the outer bottom surface of the first partition cover (2). The first partition (1), the first partition cover (2) and the first protruding rib (101) form the first heat exchange chamber.

6. The plate heat exchanger according to claim 5, characterized in that, A second baffle (401) is provided on the inner bottom surface of the second partition cover (4). The second baffle (401) is arranged along the length direction of the heat exchanger. One end of the second baffle (401) away from the first channel (501) is connected to the baffle on the side of the second partition cover (4). The other end of the second baffle (401) is spaced apart from the baffle on the corresponding side of the second partition cover (4). The top surface of the second baffle (401) is connected to the outer bottom surface of the second partition (3). The second partition (3), the second partition cover (4), and the second baffle (401) form the fifth flow channel (505). A second protruding rib (301) is provided on the inner bottom surface of the second partition (3). The second protruding rib (301) is provided along the length direction of the heat exchanger. One end of the second protruding rib (301) away from the first channel (501) is connected to the baffle on the side of the second partition (3). The other end of the second protruding rib (301) is spaced apart from the baffle on the corresponding side of the second partition (3). The top surface of the second protruding rib (301) is connected to the outer bottom surface of the second partition cover (4). The second partition (3), the second partition cover (4) and the second protruding rib (301) form the second heat exchange chamber.

7. The plate heat exchanger according to claim 6, characterized in that, The first protruding ridge (101) and the first baffle (201) are staggered in the width direction of the heat exchanger, and the second protruding ridge (301) and the second baffle (401) are staggered in the width direction of the heat exchanger.

8. The plate heat exchanger according to any one of claims 2 to 7, characterized in that, The heat exchanger further includes a first heat exchange channel (510) and a second heat exchange channel (511), the first heat exchange channel (510) and the second heat exchange channel (511) are spaced apart and axially along the height direction of the heat exchanger, and the first heat exchange channel (510) and the second heat exchange channel (511) are both located on the heat exchanger at one end away from the first channel (501).

9. The plate heat exchanger according to claim 8, characterized in that, The first heat exchange chamber includes multiple parallel spaces, and / or the second heat exchange chamber also includes multiple parallel spaces. The first heat exchange channel (510) is connected to the first heat exchange chamber and the second heat exchange chamber, and the second heat exchange channel (511) is connected to the first heat exchange chamber and the second heat exchange chamber.

10. A battery thermal management system, characterized in that, Includes the plate heat exchanger as described in any one of claims 1 to 9.

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