A heat exchanger and electrochemical energy conversion system

Abstract

This utility model discloses a heat exchanger and an electrochemical energy conversion system. The heat exchanger includes a heat exchange core, within which multiple first and second flow channels are alternately distributed along a first direction. The heat exchange core includes a first side and a second side arranged opposite each other along a third direction, and a third side and a fourth side arranged opposite each other along a second direction. The first side has multiple first inlets, the second side has multiple first outlets, and the third and fourth sides each have multiple second inlets on the side closest to the second side, and multiple second outlets on the side of the third and / or fourth side closest to the first side. The third direction is perpendicular to the second direction. The first inlets and first outlets are respectively connected to the corresponding first flow channels, and the second inlets and second outlets are respectively connected to the corresponding second flow channels. The first, second, and third directions are perpendicular to each other. The heat exchanger of this utility model can improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger and an electrochemical energy conversion system. Background Technology

[0002] Heat exchangers can transfer heat between two or more fluids at different temperatures and are widely used in electrochemical energy conversion systems such as fuel cell systems and electrolytic cell systems.

[0003] Heat exchangers typically consist of alternating cold-side and hot-side flow channels, with fluids exchanging heat through baffles. With a constant heat exchange area, the uniformity of fluid distribution within the cold and hot-side channels significantly impacts heat exchange efficiency. However, existing heat exchangers, due to their flawed structural design, exhibit poor fluid distribution uniformity within the cold and hot-side channels, drastically reducing heat exchange efficiency. Utility Model Content

[0004] The present invention aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of the present invention is to provide a heat exchanger that can improve heat exchange efficiency and enhance the stability of heat exchange performance.

[0005] This invention also proposes an electrochemical energy conversion system having the above-mentioned heat exchanger.

[0006] A heat exchanger according to a first aspect embodiment of the present invention includes: A heat exchange core is provided with a plurality of first flow channels and second flow channels alternately distributed along a first direction. The heat exchange core includes a first side and a second side arranged opposite to each other along a third direction, and a third side and a fourth side arranged opposite to each other along a second direction. The first side is provided with a plurality of first inlets, the second side is provided with a plurality of first outlets, the third side and the fourth side are respectively provided with a plurality of second inlets on the side near the second side, and the third side and / or the fourth side is provided with a plurality of second outlets on the side near the first side. The first inlet and the first outlet are respectively connected to the corresponding first flow channel, and the second inlet and the second outlet are respectively connected to the corresponding second flow channel. The first direction, the second direction, and the third direction are arranged perpendicular to each other.

[0007] The heat exchanger according to the embodiments of this utility model has at least the following beneficial effects: The first inlet is located on the first side of the heat exchange core, and the first outlet is located on the second side of the heat exchange core. Since the first and second sides are arranged opposite each other, the first fluid can enter from the first inlet at one end of the first flow channel and flow in a third direction towards the first outlet at the other end of the first flow channel. The line connecting the first inlet and the first outlet, as well as the path of the first flow channel, are all straight lines. This avoids the problem of localized concentration or insufficient first fluid in the first flow channel due to unreasonable layout of the first inlet and the first outlet, ensuring that the first fluid can uniformly fill the entire first flow channel, improving the uniformity of fluid distribution within the first flow channel, and increasing heat exchange efficiency. Furthermore, the second inlet is located on the third and fourth sides near the second side, and the second outlet is located on the third and / or fourth sides near the first side. This arrangement, with the second inlet near the first outlet and the second outlet near the first inlet, creates a counter-current heat exchange pattern between the second and first fluids, further improving heat exchange efficiency, reducing the adverse effects of uneven distribution of the second fluid within the second flow channel on the overall heat exchange effect, and improving the stability of the heat exchanger's heat exchange performance.

[0008] According to some embodiments of the present invention, the second entrance on the third side is symmetrically arranged with the second entrance on the fourth side; Both the third side and the fourth side are provided with a plurality of second outlets, and the second outlets of the third side and the second outlets of the fourth side are symmetrically arranged.

[0009] According to some embodiments of the present invention, multiple baffles are spaced apart inside the heat exchange core, and a first flow channel or a second flow channel is formed between two adjacent baffles and the third side and the fourth side.

[0010] According to some embodiments of the present invention, the first entrance includes a first side and a second side disposed opposite to each other along the second direction, and the distance from the first side to the third side is equal to the distance from the second side to the fourth side. The first outlet includes a third side and a fourth side disposed opposite to each other along the second direction, wherein the distance from the third side to the third side surface is equal to the distance from the fourth side to the fourth side surface.

[0011] According to some embodiments of the present invention, the heat exchanger further includes a first flow guiding assembly, which includes a first flow guiding pipe and a flow splitter connected to the first flow guiding pipe. The flow splitter covers the second inlet to guide the second fluid into the second flow channel.

[0012] According to some embodiments of the present invention, the diverting component includes a diverting head and two diverting tails connected to the diverting head. The diverting head is connected to the first guide pipe. The two diverting tails extend along the first direction and are arranged opposite to each other. One of the diverting tails covers the second inlet on the third side, and the other diverting tail covers the second inlet on the fourth side.

[0013] According to some embodiments of the present invention, two first inclined plates are provided inside the diversion head, with one end of the two first inclined plates connected and the other end respectively inclined toward the corresponding diversion tail.

[0014] According to some embodiments of the present invention, a second inclined plate is provided in the tail section of the diversion, and the distance between the second inclined plate and the heat exchange core gradually decreases along a first direction away from the head of the diversion.

[0015] According to some embodiments of the present invention, the opening cross-sectional area of ​​the second outlet gradually decreases along a first direction away from the first guide tube.

[0016] According to some embodiments of the present invention, the heat exchanger further includes a wedge-shaped baffle disposed along the first direction, and the wedge-shaped baffle is disposed at the second outlet. Along the first direction away from the first guide pipe, the width of the wedge-shaped baffle gradually increases so that the opening cross-sectional area of ​​the second outlet gradually decreases.

[0017] According to some embodiments of the present invention, the third side and the fourth side are both provided with the second outlet, and the heat exchanger further includes a second flow guiding assembly. The second flow guiding assembly includes a second flow guiding pipe and a manifold connected to the second flow guiding pipe. The manifold covers the second outlet to draw the second fluid in the second flow channel to the second flow guiding pipe.

[0018] According to some embodiments of the present invention, the manifold includes a manifold head and two manifold tails connected to the manifold head. The manifold head is connected to the second guide tube. The two manifold tails extend along the first direction and are arranged opposite to each other. One of the manifold tails covers the second outlet on the third side, and the other manifold tail covers the second outlet on the fourth side.

[0019] An electrochemical energy conversion system according to a second aspect of the present invention includes a heat exchanger according to a first aspect of the present invention.

[0020] The electrochemical energy conversion system according to the embodiments of the present invention has at least the following beneficial effects: the electrochemical energy conversion system of the present application can improve heat exchange efficiency, thereby improving the overall heat transfer performance.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is one of the structural schematic diagrams of the heat exchanger according to an embodiment of the present utility model; Figure 2 This is one of the partial structural schematic diagrams of the heat exchanger in an embodiment of this utility model; Figure 3 for Figure 2 Enlarged view of section A; Figure 4 This is a second schematic diagram of a portion of the heat exchanger in an embodiment of this utility model; Figure 5 for Figure 4 Enlarged view of section B; Figure 6 This is an exploded view of the heat exchanger according to an embodiment of the present invention; Figure 7 This is a second schematic diagram of the heat exchanger in an embodiment of this utility model; Figure 8 for Figure 7 Sectional view at point DD; Figure 9 for Figure 8 Enlarged view of section C; Figure 10 This is a schematic diagram of the structure of the wedge-shaped baffle in an embodiment of the present invention.

[0023] Reference numerals: 100, heat exchange core; 110, first side; 120, second side; 130, third side; 140, fourth side; 150, first inlet; 151, second side; 160, first outlet; 161, third side; 162, fourth side; 170, second inlet; 180, second outlet; 190, partition; 200, heat exchange flow channel; 210, first flow channel; 220, second flow channel; 300, First flow guiding assembly; 310, First flow guiding pipe; 320, Flow splitter; 321, Flow splitter head; 3211, First inclined plate; 322, Flow splitter tail; 3221, Second inclined plate; 400. Wedge-shaped baffle; 500. Second flow guiding assembly; 510. Second flow guiding pipe; 520. Manifold; 521. Manifold head; 522. Manifold tail; 600, Third flow guiding component; 700, Fourth flow guiding component. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6A first aspect of this utility model provides a heat exchanger, including a heat exchange core 100 and a heat exchange flow channel 200. The heat exchange core 100 includes a first side 110 and a second side 120 arranged opposite each other along a third direction, and a third side 130 and a fourth side 140 arranged opposite each other along a second direction. The first side 110 is provided with a plurality of first inlets 150, the second side 120 is provided with a plurality of first outlets 160, the third side 130 and the fourth side 140 are respectively provided with a plurality of second inlets 170 on the side near the second side 120, and the third side 130 and / or the fourth side 140 are provided with a plurality of second outlets 180 on the side near the first side 110. The heat exchange channel 200 includes a plurality of first channels 210 and second channels 220. The first channels 210 and second channels 220 are alternately arranged in the heat exchange core 100 along a first direction. The first inlet 150 and the first outlet 160 are respectively connected to the corresponding first channels 210, and the second inlet 170 and the second outlet 180 are respectively connected to the corresponding second channels 220.

[0030] The first, second, and third directions are set perpendicular to each other.

[0031] The first inlet 150 is located on the first side 110 of the heat exchange core 100, and the first outlet 160 is located on the second side 120 of the heat exchange core 100. Since the first side 110 and the second side 120 are arranged opposite to each other, the first fluid can enter from the first inlet 150 at one end of the first flow channel 210 and flow in a third direction to the first outlet 160 at the other end of the first flow channel 210. The line connecting the first inlet 150 and the first outlet 160 and the path of the first flow channel 210 are all straight lines. This avoids the problem of local concentration or insufficient first fluid in the first flow channel 210 due to unreasonable layout of the positions of the first inlet 150 and the first outlet 160, ensuring that the first fluid can uniformly fill the entire first flow channel 210, improving the uniformity of fluid distribution in the first flow channel 210, improving heat exchange efficiency, and controlling the pressure loss of the first fluid within a good range. Furthermore, the second inlet 170 is located near the second side 120 on the third side 130 and the fourth side 140, and the second outlet 180 is located near the first side 110 on the third side 130 and / or the fourth side 140. Thus, the second inlet 170 is located near the first outlet 160, and the second outlet 180 is located near the first inlet 150. This allows the second fluid and the first fluid to form a counter-current heat exchange pattern, which can further improve the heat exchange efficiency, reduce the adverse effects of uneven distribution of the second fluid in the second flow channel 220 on the overall heat exchange effect, improve the stability of the heat exchanger's heat exchange performance, and effectively reduce the pressure loss of the second fluid.

[0032] Reference Figure 1It should be noted that the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction.

[0033] In some embodiments, the first flow channel 210 is configured as a hot flow channel, and the first fluid in the first flow channel 210 is a hot fluid. The first inlet 150 is a hot fluid inlet, and the first outlet 160 is a hot fluid outlet. The first inlet 150 and the first outlet 160 are symmetrically arranged. The first inlet 150 and the first outlet 160 are respectively located on the first side 110 and the second side 120 of the heat exchange core 100. The first side 110 is located above the second side 120, forming a flow pattern of hot fluid entering from the top and exiting from the bottom. This allows the hot fluid to enter from the first inlet 150 at the top of the first flow channel 210 and flow directionally along the first flow channel 210 to the first outlet 160 at the bottom of the first flow channel 210. This avoids the problem of local concentration of the first fluid or flow dead zones in the first flow channel 210 and improves the uniform distribution of the hot fluid in the hot flow channel. Meanwhile, the second flow channel 220 is set as a cold flow channel, so the second fluid in the second flow channel 220 is a cold fluid, the second inlet 170 is a cold fluid inlet, and the second outlet 180 is a cold fluid outlet, forming a flow pattern in which the cold fluid enters and exits from both sides of the heat exchange core 100, increasing the inlet distribution range of the second fluid entering the second flow channel 220, so that the cold fluid can fill the cold flow channel more evenly. Combined with the uniform flow distribution design of the hot flow channel, the heat exchange conditions between the cold flow channel and the hot flow channel are further optimized, and the overall heat exchange efficiency of the heat exchanger is improved.

[0034] In some other embodiments, the first flow channel 210 is configured as a cold flow channel, in which case the first fluid within the first flow channel 210 is a cold fluid, the first inlet 150 is a cold fluid inlet, and the first outlet 160 is a cold fluid outlet. The second flow channel 220 is configured as a hot flow channel, in which case the second fluid within the second flow channel 220 is a hot fluid, the second inlet 170 is a hot fluid inlet, and the second outlet 180 is a hot fluid outlet. Since the cold fluid experiences a temperature increase and a density decrease during heat exchange, it naturally experiences an upward force. Therefore, it is more reasonable to place the cold fluid inlet at the bottom and the outlet at the top. This requires inverting the heat exchange core 100, meaning the first side 110 is located below the second side 120, forming a flow pattern where the cold fluid enters from the bottom and exits from the top, while the hot fluid enters from both sides of the heat exchange core 100.

[0035] Reference Figure 1 , Figure 8 In some embodiments, multiple baffles 190 are spaced apart inside the heat exchange core 100. A first flow channel 210 or a second flow channel 220 is formed between two adjacent baffles 190 and the third side 130 and the fourth side 140. The first flow channel 210 and the second flow channel 220 are alternately arranged along a first direction. Adjacent first flow channels 210 and second flow channels 220 share a baffle 190, thereby realizing heat exchange between cold fluid and hot fluid.

[0036] In some other embodiments, a second outlet 180 is provided on one of the third side 130 and the fourth side 140. This structure can reduce the volume of the heat exchanger, reduce the processing difficulty of the heat exchanger, reduce the cost, and still achieve good heat exchange effect.

[0037] In some embodiments, both the third side 130 and the fourth side 140 are provided with multiple second outlets 180. Compared to a structure where only one of the third side 130 and the fourth side 140 is provided with a second outlet 180, this allows the second fluid in the second flow channel 220 to form a symmetrical flow state during the flow process. At the same time, it ensures that the flow path length of the second fluid in each second flow channel 220 is consistent, reducing the uneven local flow resistance caused by path differences. This makes the heat exchange process between the second fluid and the fluid in the first flow channel 210 more sufficient and uniform in each region of the flow channel, avoiding insufficient or excessive local heat exchange, improving the consistency of the temperature of the second fluid flowing out from each second outlet 180, and ensuring the stability of the output fluid temperature of the heat exchanger. At the same time, it can also further reduce the pressure loss of the second fluid.

[0038] In some embodiments, the second inlet 170 of the third side 130 is symmetrically arranged with the second inlet 170 of the fourth side 140, and the second outlet 180 of the third side 130 is symmetrically arranged with the second outlet 180 of the fourth side 140, so as to ensure that the first fluid flows symmetrically in the first flow channel 210 and the second fluid flows symmetrically in the second flow channel 220, thereby ensuring that the heat exchanger heats up more fully and evenly.

[0039] Reference Figures 3 to 5 , Figure 9 In some embodiments, the first inlet 150 includes a first side and a second side 151 disposed opposite to each other along a second direction, the distance from the first side to the third side 130 being equal to the distance from the second side 151 to the fourth side 140; the first outlet 160 includes a third side 161 and a fourth side 162 disposed opposite to each other along a second direction, the distance from the third side 161 to the third side 130 being equal to the distance from the fourth side 162 to the fourth side 140, such that the first inlet 150 is located at the top center of the first flow channel 210, and the first outlet... The inlet 160 is located in the middle of the bottom of the first flow channel 210, so that when the first fluid enters the first flow channel 210 from the first inlet 150 in the middle of the top, it can diffuse evenly to both sides of the first flow channel 210, avoiding the local concentration of the first fluid in the first flow channel 210 caused by the offset of the first inlet 150. At the same time, as the first fluid flows towards the first outlet 160 in the middle of the bottom of the first flow channel 210, it can maintain the overall symmetry and stability of the flow, reduce the uneven distribution of flow resistance, and improve the uniformity of the first fluid entering and exiting the first flow channel 210.

[0040] In some embodiments, the orthographic projection shapes of the first inlet 150 and the first outlet 160 are the same as the orthographic projection shape of the first flow channel 210, which can increase the flow area of ​​the first inlet 150 and the first outlet 160, reduce the local flow resistance of the first fluid when entering and exiting the first flow channel 210, thereby achieving pressure loss control, avoiding the problem of obstructed flow of the first fluid due to insufficient area of ​​the first inlet 150 or the first outlet 160, ensuring that the first fluid can smoothly enter and exit the first flow channel 210, improving the flow efficiency of the first fluid, and maintaining the stability of the flow of the first fluid in the first flow channel 210.

[0041] Reference Figure 6 In some embodiments, the heat exchanger further includes a first flow guiding assembly 300, which includes a first flow guiding pipe 310 and a flow divider 320 connected to the first flow guiding pipe 310. The first flow guiding pipe 310 is arranged along a first direction, and the flow divider 320 covers the second inlet 170 to guide the first fluid into the second flow channel 220. Specifically, the second fluid flows into the diverter 320 through the first guide pipe 310. The diverter 320 guides the second fluid from the second inlet 170 to the second channel 220, avoiding local turbulence or fluid concentration caused by the second fluid directly impacting the second inlet 170. Through the flow stabilization effect of the first guide pipe 310 and the diversion function of the diverter 320, the second fluid forms a more uniform flow state before entering the second channel 220, reducing the uneven distribution of the second fluid in the second channel 220 caused by the flow turbulence at the second inlet 170. At the same time, the sealing and cooperation between the diverter 320 and the second inlet 170 ensures the sealing and guidance of the second fluid flow path, reduces the risk of second fluid leakage and local pressure loss, and ensures that the second fluid can enter the second channel 220 stably and uniformly.

[0042] Reference Figure 6 , Figure 7In some embodiments, the diverter 320 includes a diverter head 321 and two diverter tails 322 connected to the diverter head 321. The diverter head 321 is connected to the first guide pipe 310. The two diverter tails 322 extend along a first direction and are arranged opposite to each other. One diverter tail 322 covers the second inlet 170 of the third side 130, and the other diverter tail 322 covers the second inlet 170 of the fourth side 140, so that after the second fluid flows into the diverter head 321 through the first guide pipe 310, it can be evenly distributed by the diverting effect of the diverter head 321. The fluid is directed to two branch tails 322, and then introduced into the second flow channel 220 from the second inlet 170 of the third side 130 and the fourth side 140, respectively. This achieves bidirectional uniform diversion of the second fluid before it enters the second flow channel 220. Through the buffering of the branch head 321 and the directional guidance of the branch tail 322, the local resistance and turbulence of the second fluid during its flow are reduced, ensuring that the second fluid can enter the second flow channel 220 symmetrically and uniformly from the second inlet 170 on both sides of the heat exchange core 100, thereby improving the uniformity of the second fluid distribution within the second flow channel 220.

[0043] Reference Figure 6 , Figure 8 In some embodiments, two first inclined plates 3211 are provided inside the diversion head 321. One end of the two first inclined plates 3211 is connected, and the other end is inclined towards the corresponding diversion tail 322. This can provide a directional guiding effect for the second fluid flowing into the diversion head 321. Through the guidance of the inclined plates, the second fluid is uniformly divided into two streams before entering the second flow channel 220, avoiding the problem of local aggregation or flow deviation of the second fluid in the diversion head 321. At the same time, the inclined design of the first inclined plates 3211 reduces the resistance loss during the diversion process of the second fluid, allowing the two streams of fluid to maintain a stable flow state and enter the two diversion tails 322 respectively. Then, through the diversion tails 322, they are uniformly introduced into the corresponding second flow channel 220, improving the initial distribution uniformity of the second fluid in the second flow channel 220.

[0044] Reference Figure 6 , Figure 8In some embodiments, a second inclined plate 3221 is provided in the flow divider tail 322, and the distance between the second inclined plate 3221 and the heat exchange core 100 gradually decreases along a first direction away from the flow divider head 321. The second inlet 170 is located on the third side 130 and the fourth side 140 of the heat exchange core 100, and the distance between the first guide pipe 310 and each of the second flow channels 220 is not equal. After the second fluid passes through the first guide pipe 310, it needs to flow along a third direction and enter different second flow channels 220 sequentially through each second inlet 170. Due to the initial force of the second fluid, the second fluid flow rate of the second flow channel 220 away from the inlet of the first guide pipe 310 is the largest, while the second fluid flow rate of the second flow channel 220 at the inlet of the first guide pipe 310 is the smallest. This results in an uneven distribution of fluid flow rate in each of the second flow channels 220 in the heat exchange core 100, which affects the improvement of heat exchange efficiency. Therefore, by setting the inclined second inclined plate 3221, the pressure loss of each second flow channel 220 can be adjusted. That is, the fluid flow resistance of each second flow channel 220 can be adjusted by changing the cross-sectional shape of the flow channel in the flow divider tail 322. The local resistance of the second flow channel 220 that is far from the inlet of the first guide pipe 310 and tends to have a higher flow rate is increased, while the local resistance of the second flow channel 220 that is close to the inlet of the first guide pipe 310 and tends to have a lower flow rate is reduced. This balances the fluid flow rate of each second flow channel 220, making the flow rate of the second fluid flowing into each second flow channel 220 more uniform. This solves the problem of reduced heat exchange efficiency caused by uneven flow distribution and further improves the overall heat exchange efficiency of the heat exchanger.

[0045] Reference Figure 6 In some embodiments, along a first direction away from the first guide pipe 310, the opening cross-sectional area of ​​the second outlet 180 gradually decreases, that is, the opening cross-sectional area of ​​the second outlet 180 decreases as the shortest distance between the second outlet 180 and the first guide pipe 310 increases. The opening cross-sectional area of ​​the second outlet 180 is smaller the farther away from the inlet of the first guide pipe 310, which further increases the flow resistance of the second flow channel 220 away from the first guide pipe 310. The opening cross-sectional area of ​​the second outlet 180 and the pressure loss adjustment of the second inclined plate 3221 form a synergistic effect, making the second fluid flow rate of each second flow channel 220 more uniform, thereby further improving the heat exchange efficiency of the heat exchanger.

[0046] In some embodiments, the heat exchanger further includes a wedge-shaped baffle 400 disposed along a first direction. The wedge-shaped baffle 400 is disposed at the second outlet 180 of the third side 130 and the second outlet 180 of the fourth side 140. Along the first direction away from the first guide pipe 310, the width of the wedge-shaped baffle 400 gradually increases so that the opening cross-sectional area of ​​the second outlet 180 gradually decreases.

[0047] Reference Figure 6 , Figure 10Specifically, the two wedge-shaped baffles 400 are symmetrically arranged. The multiple second outlets 180 on the third side 130 and the multiple second outlets 180 on the fourth side 140 of the heat exchange core 100 are all the same in shape and size. The wedge-shaped baffles 400 are right-angled triangles. One right-angled side of the wedge-shaped baffle 400 is attached to the side of the second outlet 180 near the second inlet 170, and the other right-angled side of the wedge-shaped baffle 400 is attached to the side of the third side 130 or the fourth side 140 away from the first guide pipe 310. Compared with controlling the opening cross-sectional area of ​​the second outlet 180 of each second flow channel 220, the pressure loss of the second flow channel 220 can be adjusted more conveniently through the wedge-shaped baffles 400.

[0048] Reference Figure 1 , Figure 6 In some embodiments, the heat exchanger further includes a second flow guiding assembly 500, which includes a second flow guiding pipe 510 and a manifold 520 connected to the second flow guiding pipe 510. The second flow guiding pipe 510 is arranged along a first direction, and the manifold 520 covers the second outlet 180, so that the second fluid in the second flow channel 220 can be collected by the manifold 520 and flow into the second flow guiding pipe 510, ensuring that the second fluid can be guided to the confluence area after flowing out from each of the second outlets 180. At the same time, the arrangement of the second flow guiding pipe 510 along the first direction provides a flow path for the second fluid after confluence, reduces the pressure loss of the second fluid in the confluence stage, maintains the continuity and stability of the flow of the second fluid in the second flow channel 220, and improves the uniformity of the distribution of the second fluid in the second flow channel 220.

[0049] Reference Figure 1 , Figure 6 In some embodiments, the manifold 520 includes a manifold head 521 and two manifold tails 522 connected to the manifold head 521. The manifold head 521 is connected to the second guide pipe 510. The two manifold tails 522 extend along a first direction and are arranged opposite to each other. One manifold tail 522 covers the second outlet 180 of the third side 130, and the other manifold tail 522 covers the second outlet 180 of the fourth side 140, such that the third side 130 and the fourth side 140 of the heat exchange core 100 are connected. The second fluid flowing out of the second outlet 180 of 140 can be introduced into the confluence head 521 through the corresponding confluence tail 522, so as to realize the symmetrical confluence of the second fluid flowing out of the second outlet 180 on both sides of the heat exchange core 100. Furthermore, through the guiding effect of the confluence tail 522, the flow loss of the second fluid after flowing out of the second flow channel 220 is reduced, ensuring that the second fluid maintains a stable flow state during the confluence process, reducing the pressure loss in the confluence stage, and further improving the uniformity and continuity of the second fluid flow in the second flow channel 220.

[0050] Reference Figure 1In some embodiments, the heat exchanger further includes a third flow guiding assembly 600, which has a first flow guiding port connected to the first inlet 150 to guide the first fluid to the first flow channel 210. Specifically, the third flow guiding assembly 600 is disposed on the first side 110 of the heat exchange core 100, and the opening direction of the first flow guiding port is parallel to the opening direction of the first inlet 150, so as to facilitate the uniform dispersion of the first fluid into each of the first flow channels 210.

[0051] Reference Figure 1 In some embodiments, the heat exchanger further includes a fourth flow guiding assembly 700, which has a second flow guiding port connected to the first outlet 160 to discharge the first fluid within the first flow channel 210. Specifically, the fourth flow guiding assembly 700 is disposed on the second side 120 of the heat exchange core 100, and the opening direction of the second flow guiding port is parallel to the opening direction of the first outlet 160, facilitating the flow of the first fluid from each of the first flow channels 210.

[0052] An electrochemical energy conversion system according to a second aspect of the present invention is provided, including the heat exchanger of the first aspect of the present invention. The electrochemical energy conversion system of the present application can improve heat exchange efficiency, thereby improving overall heat transfer performance.

[0053] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A heat exchanger, characterized in that, include: A heat exchange core is provided with a plurality of first flow channels and second flow channels alternately distributed along a first direction. The heat exchange core includes a first side and a second side arranged opposite to each other along a third direction, and a third side and a fourth side arranged opposite to each other along a second direction. The first side is provided with a plurality of first inlets, the second side is provided with a plurality of first outlets, the third side and the fourth side are respectively provided with a plurality of second inlets on the side near the second side, and the third side and / or the fourth side is provided with a plurality of second outlets on the side near the first side. The first inlet and the first outlet are respectively connected to the corresponding first flow channel, and the second inlet and the second outlet are respectively connected to the corresponding second flow channel. The first direction, the second direction, and the third direction are arranged perpendicular to each other.

2. The heat exchanger according to claim 1, characterized in that, The heat exchanger further includes a first flow guiding assembly, which includes a first flow guiding pipe and a flow splitter connected to the first flow guiding pipe. The flow splitter covers the second inlet to guide the second fluid into the second flow channel.

3. The heat exchanger according to claim 2, characterized in that, The diverting component includes a diverting head and two diverting tails connected to the diverting head. The diverting head is connected to the first guide pipe. The two diverting tails extend along the first direction and are arranged opposite to each other. One of the diverting tails covers the second inlet on the third side, and the other diverting tail covers the second inlet on the fourth side.

4. The heat exchanger according to claim 3, characterized in that, The shunt head is provided with two first inclined plates, one end of the two first inclined plates is connected, and the other end is inclined toward the corresponding shunt tail.

5. The heat exchanger according to claim 3, characterized in that, A second inclined plate is provided in the tail section of the diversion section, and the distance between the second inclined plate and the heat exchange core gradually decreases along a first direction away from the head of the diversion section.

6. The heat exchanger according to claim 2, characterized in that, Along a first direction away from the first guide tube, the opening cross-sectional area of ​​the second outlet gradually decreases.

7. The heat exchanger according to claim 6, characterized in that, The heat exchanger further includes a wedge-shaped baffle disposed along the first direction, and the wedge-shaped baffle is disposed at the second outlet. Along the first direction away from the first guide pipe, the width of the wedge-shaped baffle gradually increases so that the opening cross-sectional area of ​​the second outlet gradually decreases.

8. The heat exchanger according to claim 1, characterized in that, The first entrance includes a first side and a second side disposed opposite to each other along the second direction, and the distance from the first side to the third side is equal to the distance from the second side to the fourth side. The first outlet includes a third side and a fourth side disposed opposite to each other along the second direction, wherein the distance from the third side to the third side surface is equal to the distance from the fourth side to the fourth side surface.

9. The heat exchanger according to claim 1, characterized in that, The third side and the fourth side are both provided with the second outlet. The heat exchanger also includes a second flow guiding assembly, which includes a second flow guiding pipe and a manifold connected to the second flow guiding pipe. The manifold covers the second outlet to draw the second fluid in the second flow channel to the second flow guiding pipe.

10. An electrochemical energy conversion system, characterized in that, Includes the heat exchanger as described in any one of claims 1 to 9.

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