Plate sheet capable of improving heat exchange amount and heat exchanger thereof

Abstract

The utility model discloses a plate sheet for improving heat exchange amount and a heat exchanger thereof in the technical field of battery heat management, the plate sheet comprises four fluid inlets and outlets arranged on the plate sheet, a plurality of plate sheets are laminated, a circulation channel is formed between two adjacent layers of plate sheets, and different fluids circulate in two adjacent circulation channels; an isolation raised line is arranged at the symmetric center of the plate sheet, one end of the isolation raised line is connected with one end part of the plate sheet, and a circulation space is reserved between the other end of the isolation raised line and the other end of the plate sheet; wherein the two fluid inlets and outlets are positioned at one end of the sheet and are provided with isolation convex rings, and the isolation convex rings are used for isolating interpenetration of different fluids; the other two fluid inlets and outlets are positioned at the other end of the plate sheet and are provided with annular grooves; convex edges are arranged on the groove walls of the inner sides of the annular grooves; a notch is formed in one side, close to the end part of the plate, of the convex edge. The heat exchanger has the advantages that slow flow areas and retention areas are reduced, the heat exchange area of the middle plate is fully utilized, heat exchange is sufficient, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery thermal management technology, and in particular to a plate and heat exchanger for improving heat exchange capacity. Background Technology

[0002] Battery coolers are generally assembled from multiple layers of plates. The gaps between the plates form the flow channels for the working medium. The channels between adjacent layers cannot be interconnected, and each provides a flow path for different working media such as refrigerant or coolant. If the temperatures of two different working media are inconsistent, a temperature difference is generated. Energy is transferred from the side with higher temperature to the side with lower temperature through the plate wall, and heat exchange occurs. This is the basic working principle of a heat exchanger.

[0003] For example, existing technology discloses a flow-dividing structure within a battery cooler stack and its application in a stacked flow channel, with authorization announcement number CN 210070677 U and authorization announcement date of 2020.02.14. This structure has a stagnant area in each flow layer; for example, such as Figure 1 The fluid flow diagram shown in the figure indicates the presence of stagnant zones, where effective flow heat transfer is not achieved and internal surface flow heat transfer is insufficient. Utility Model Content

[0004] The purpose of this invention is to provide a plate and heat exchanger that improves heat exchange capacity, reduces the formation of stagnant zones, fully utilizes the heat exchange area of ​​the middle plate, ensures sufficient heat exchange, and improves heat exchange efficiency.

[0005] To achieve the above-mentioned objectives, the high-heat-exchange-capacity plate and its heat exchanger of this utility model adopt the following technical solution:

[0006] A plate for improving heat exchange includes four fluid inlets and outlets disposed on the plate. Multiple plates are stacked, with a flow channel formed between adjacent layers. Different fluids flow through adjacent flow channels, with one layer carrying coolant and the other carrying refrigerant. A symmetrical center of the plate is provided with an isolation ridge, the isolation ridge of the lower plate contacting the bottom of the upper plate. One end of the isolation ridge is connected to one end of the plate, and a flow gap is left between the other end of the isolation ridge and the other end of the plate. Two fluid inlets and outlets are located at one end of the plate and are provided with isolation rings, the flow gap being close to the isolation rings. The isolation rings of the lower plate contact the bottom of the upper plate, and the isolation rings are used to prevent the interpenetration of different fluids. The other two fluid inlets and outlets are located at the other end of the plate and are provided with annular grooves. The inner wall of the annular groove has a protruding edge, the protruding edge of the lower plate contacting the bottom of the upper plate. A notch is provided on one side of the protruding edge close to the end of the plate.

[0007] Preferably, the fluid inlet and outlet are configured as elliptical openings, with the end of the notch furthest from the isolation protrusion located at one end of the elliptical opening, and a gap between the other end of the notch and the other end of the elliptical opening. The notch guides the flow of fluid.

[0008] Preferably, the plate is provided with a plurality of circular grooves.

[0009] A heat exchanger includes the aforementioned plates for improving heat exchange capacity. Multiple plates are stacked, with a top plate above the uppermost plate and a bottom plate below the lowermost plate. Two fluid inlets and outlets with annular grooves on the plates form a flow zone, and two fluid inlets and outlets with isolation rings on the plates form a closed zone. The flow zone of the upper plate is directly opposite the closed zone of the lower plate. The top plate has a coolant inlet and a coolant outlet, and the flow zone of the uppermost plate connects to the coolant inlet and outlet. The bottom plate has a refrigerant inlet and a refrigerant outlet, and the flow zone of the lowermost plate connects to the refrigerant inlet and outlet.

[0010] Preferably, a layer of fins is provided between the multi-layer plates. The fins improve the heat exchange efficiency.

[0011] Preferably, the plate through which the coolant flows is provided with several circular grooves, which are located on the upper surface of the plate and in contact with the coolant.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention changes the flow direction of the fluid in the flow channel by setting a notch on the convex edge, so that the fluid must go around the convex edge until it enters and exits the fluid inlet and outlet through the notch. This guides the fluid into the stagnation area, makes full use of the heat exchange area of ​​the plate, improves the heat exchange efficiency, and has a reasonable overall design, simple structure, and practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the plate in the background art;

[0015] Figure 2 This is a perspective view of the heat exchanger of this utility model;

[0016] Figure 3 This is an exploded view of the heat exchanger of this utility model;

[0017] Figure 4 This is a schematic diagram of the fluid flow structure in the plate of this utility model. Figure 1 ;

[0018] Figure 5 This is a schematic diagram of the fluid flow structure in the plate of this utility model. Figure 2 ;

[0019] Figure 6 for Figure 3 Enlarged view of part A;

[0020] Figure 7 for Figure 3 Enlarged view of part B.

[0021] in, Figure 2-7 In the middle, 1 plate, 2 fluid inlet and outlet, 3 isolation ridge, 4 flow gap, 5 circular groove, 6 top plate, 7 coolant outlet, 8 coolant inlet, 9 refrigerant inlet, 10 refrigerant outlet, 11 bottom plate, 12 fins, 13 protruding edge, 14 isolation ring, 15 annular groove, 16 notch. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and not for limiting the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0023] like Figure 2-7 As shown, a plate for improving heat exchange includes four fluid inlets and outlets 2 disposed on a plate 1. Multiple plates 1 are stacked, and several circular grooves 5 may also be provided on the plate 1. A flow channel is formed between two adjacent layers of plates 1. Different fluids flow in two adjacent flow channels, with coolant flowing in one flow channel and refrigerant flowing in the next adjacent flow channel. An isolation ridge 3 is provided at the symmetrical center of the plate 1, and the isolation ridge 3 of the lower plate 1 is in contact with the bottom of the upper plate 1. One end of the isolation ridge 3 is connected to one end of the plate 1, and a flow gap 4 is left between the other end of the isolation ridge 3 and the other end of the plate 1. Two fluid inlets and outlets 2 are located on one side of the plate 1. An isolation protrusion 14 is provided at one end of the plate 1, and the flow spacing 4 is close to the isolation protrusion 14. The isolation protrusion 14 of the lower plate 1 is in contact with the bottom of the upper plate 1. The isolation protrusion 14 is used to isolate the mutual penetration of different fluids. The other two fluid inlets and outlets 2 are located at the other end of the plate 1 and are provided with annular grooves 15. The inner wall of the annular groove 15 is provided with a protruding edge 13. The protruding edge 13 of the lower plate 1 is in contact with the bottom of the upper plate 1. A notch 16 is provided on one side of the protruding edge 13 close to the end of the plate 1. The fluid inlets and outlets 2 are set as elliptical openings. The end of the notch 16 away from the isolation protrusion 3 is located at one end of the elliptical opening. A gap is left between the other end of the notch 16 and the other end of the elliptical opening.

[0024] A heat exchanger includes the aforementioned plates 1 for increasing heat exchange capacity. Multiple plates 1 are stacked, with a top plate 6 above the uppermost plate 1 and a bottom plate 11 below the lowermost plate 1. A layer of fins 12 is disposed between the multiple plates 1. Two fluid inlets and outlets 2 with annular grooves 15 on the plates 1 form a flow zone, and two fluid inlets and outlets 2 with isolation protrusions 14 on the plates 1 form a closed zone. The flow zone of the upper plate 1 is directly opposite the closed zone of the lower plate 1. The top plate 6 has a coolant inlet 8 and a coolant outlet 7, and the flow zone of the uppermost plate 1 is connected to the coolant inlet 8 and the coolant outlet 7. The bottom plate 11 has a refrigerant inlet 9 and a refrigerant outlet 10, and the flow zone of the lowermost plate 1 is connected to the refrigerant inlet 9 and the refrigerant outlet 10. Several circular grooves 5 are disposed on the upper surface of the plate 1 and in contact with the coolant.

[0025] The specific working process and principle of this utility model: Coolant enters the flow channel between plates 1 from the coolant inlet 8 of the top plate, and the refrigerant enters the flow channel between plates 1 from the refrigerant inlet 9 of the bottom plate. Therefore, coolant and refrigerant flow through adjacent flow channels respectively, thereby causing heat exchange. The fluid in the flow channel, under the action of the isolation ridges 3 and isolation rings 14, can flow fully along the plates 1. By providing a notch 16 on the ridge edge 13, the fluid must flow around the ridge edge 13 until it enters and exits the fluid inlet / outlet 2 through the notch 16. Figure 4-5 The direction of fluid flow indicated by the middle arrow shows that this invention changes the direction of fluid flow in the flow channel in the prior art, guides the fluid into the stagnation area, makes full use of the heat exchange area of ​​plate 1, improves heat exchange efficiency, has a reasonable overall design, simple structure, and is practical.

[0026] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A plate for improving heat exchange, comprising four fluid inlets and outlets disposed on the plate, wherein multiple plates are stacked, and a flow channel is formed between adjacent plates; different fluids flow in adjacent flow channels, wherein a coolant flows in one flow channel and a refrigerant flows in the adjacent flow channel; an isolation ridge is provided at the symmetrical center of the plate, and the isolation ridge of the lower plate contacts the bottom of the upper plate; one end of the isolation ridge is connected to one end of the plate, and a flow gap is left between the other end of the isolation ridge and the other end of the plate; wherein two fluid inlets and outlets are located at one end of the plate and are provided with isolation rings, the flow gap is close to the isolation rings, and the isolation rings of the lower plate contact the bottom of the upper plate, the isolation rings being used to prevent the mutual penetration of different fluids; characterized in that: The other two fluid inlets and outlets are located at the other end of the plate and are provided with annular grooves. The inner wall of the annular groove is provided with a convex edge, and the convex edge of the lower plate is in contact with the bottom of the upper plate. The convex edge is provided with a notch on one side close to the end of the plate.

2. The plate for improving heat exchange according to claim 1, characterized in that: The fluid inlet and outlet are configured as elliptical openings. The end of the notch away from the isolation protrusion is located at one end of the elliptical opening, and a gap is left between the other end of the notch and the other end of the elliptical opening.

3. The plate for improving heat exchange according to claim 1, characterized in that: The plate has several circular grooves.

4. A heat exchanger, characterized in that: The invention comprises plates for improving heat exchange as described in any one of claims 1-3, wherein multiple plates are stacked, with a top plate above the uppermost plate and a bottom plate below the lowermost plate; each plate has two fluid inlets and outlets with annular grooves forming a flow area, and two fluid inlets and outlets with isolation convex rings forming a closed area, with the flow area of ​​the upper plate directly opposite the closed area of ​​the lower plate; the top plate has a coolant inlet and a coolant outlet, and the flow area of ​​the uppermost plate is connected to the coolant inlet and coolant outlet; the bottom plate has a refrigerant inlet and a refrigerant outlet, and the flow area of ​​the lowermost plate is connected to the refrigerant inlet and refrigerant outlet.

5. The heat exchanger according to claim 4, characterized in that: A layer of fins is placed between the multi-layer plates.

6. The heat exchanger according to claim 4, characterized in that: The plate through which the coolant flows is provided with several circular grooves, which are located on the upper surface of the plate and in contact with the coolant.

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