CN219303756U - Heat exchanger and thermal management module - Google Patents

Abstract

The application relates to a heat exchanger and thermal management module, heat exchanger are equipped with into hot current collecting channel, multilayer heat flow channel layer and the play hot current collecting channel of intercommunication in proper order, and the heat exchanger still is equipped with into cold current collecting channel, multilayer cold flow channel layer and play cold current collecting channel of intercommunication in proper order, and heat flow channel layer and cold flow channel layer are the range upon range of setting in turn. A partition structure is arranged at one end of the cold flow channel layer, which is close to the cold inlet and flow collecting channel, and the partition structure partitions the cold inlet and flow collecting channel and the cold flow channel layer; each partition structure is provided with two first diversion holes and two second diversion holes which are axially distributed along the cold inlet and current collecting channel, and the cold inlet and current collecting channel can be communicated with the same cold flow channel layer through the first diversion holes and the second diversion holes respectively. The heat exchanger and the thermal management module provided by the application solve the problem that the refrigerant is unevenly distributed in the liquid inlet channel of the heat exchanger.

Description

Heat exchanger and thermal management module

Technical Field

The application relates to the technical field of heat exchange devices, in particular to a heat exchanger and a thermal management module,

background

In battery thermal management systems, a battery cooler is typically used to cool the coolant to ensure that the battery is operating in a reasonable temperature range. The battery cooler is generally of a laminated structure, one side is cooled liquid, the other side is generally cooled medium, and the cooled medium is changed into a gas-liquid two-phase state after passing through an upstream expansion valve, and then the cooled medium of the gas-liquid two-phase enters the inside of the heat exchanger core.

In general, the heat exchanger has a plurality of parallel refrigerant channels, when the refrigerant enters the plurality of parallel refrigerant channels in a gas-liquid two-phase state, the distribution of the refrigerant in the liquid inlet channel is mainly influenced by the inertia action of the refrigerant, the friction resistance of the inner wall of the liquid inlet channel and the gravity together, and the degree of influence of the refrigerant on the refrigerant after the refrigerant enters the refrigerant channels one by one is changed. Therefore, the distribution amount of the refrigerant entering different distribution channels through the liquid inlet channel is continuously changed. Therefore, the uniformity of the distribution of the refrigerant in the liquid inlet channel is very difficult to improve.

Disclosure of Invention

Based on this, it is necessary to provide a heat exchanger and a thermal management module, which solve the problem of uneven distribution of refrigerant in the liquid inlet channel of the heat exchanger.

The heat exchanger that this application provided is equipped with into hot current collecting channel, multilayer heat flow channel layer and the play hot current collecting channel of intercommunication in proper order, and the heat exchanger still is equipped with into cold current collecting channel, multilayer cold flow channel layer and play cold current collecting channel of intercommunication in proper order, and heat flow channel layer and cold flow channel layer are the range upon range of setting in turn. A partition structure is arranged at one end of the cold flow channel layer, which is close to the cold inlet and flow collecting channel, and the partition structure partitions the cold inlet and flow collecting channel and the cold flow channel layer; each partition structure is provided with two first diversion holes and two second diversion holes which are axially distributed along the cold inlet and current collecting channel, and the cold inlet and current collecting channel can be communicated with the same cold flow channel layer through the first diversion holes and the second diversion holes respectively.

In one embodiment, the heat exchanger comprises a first partition plate and a second partition plate which are arranged in a stacked manner, wherein the first partition plate and the second partition plate are arranged in a surrounding manner to form a cold flow channel layer, the first partition plate is positioned on one side of the cold flow channel layer, which is far away from the starting end of the cold flow collecting channel, and the second partition plate is positioned on one side of the cold flow channel layer, which is close to the starting end of the cold flow collecting channel. The partition structure comprises a first partition plate and a second partition plate, one end of the first partition plate is connected with the first partition plate, the other end of the first partition plate extends towards the direction close to the starting end of the cold-inlet current collecting channel, one end of the second partition plate is connected with the second partition plate, the other end of the second partition plate extends towards the direction far away from the starting end of the cold-inlet current collecting channel, and the first partition plate and the second partition plate are connected to form the partition structure. It can be appreciated that by the arrangement, the structural complexity of the partition structure is reduced, and thus the processing cost of the partition structure is reduced.

In one embodiment, one end of the first partition plate, which is close to the cold-inlet current collecting channel, and one end of the second partition plate, which is close to the cold-inlet current collecting channel, are in sealing fit to form an annular sealing ring structure, and the sealing ring structure can separate the cold-inlet current collecting channel from the hot-flow channel layer. The sealing ring structure is provided with through holes which are communicated with each other along the axial direction of the sealing ring structure, so that adjacent cold flow channel layers can be communicated with each other through the through holes, and the through holes are communicated with the first diversion holes and the second diversion holes to form a three-way channel, so that the cold inlet and flow collecting channel and the adjacent cold flow channel layers can be communicated with each other through the three-way channel. It can be appreciated that the arrangement is such that the refrigerants in adjacent cold flow channel layers can flow mutually through the through holes, so that the flow rates of the refrigerants in different cold flow channel layers are further balanced. And the through holes are communicated with the three-way channels formed by the first diversion holes and the second diversion holes, so that the refrigerant can be uniformly distributed to the greatest extent under the action of internal hydraulic pressure.

In one embodiment, the end of the first partition plate remote from the first partition plate and the end of the second partition plate remote from the second partition plate overlap and are welded to each other. It can be appreciated that by the arrangement, the connection strength of the partition structure is improved.

In one embodiment, the first partition panel and the first partition panel are of unitary construction. It can be appreciated that the arrangement effectively reduces the processing difficulty of the partition structure.

In one embodiment, the edge portion of the first partition plate near the cold collecting channel extends toward the direction near the start end of the cold collecting channel to form a first partition plate.

In one embodiment, the second partition panel and the second partition panel are of unitary construction. It can be appreciated that the arrangement effectively reduces the processing difficulty of the partition structure.

In one embodiment, the edge portion of the second partition plate, which is close to the cold collecting channel, extends towards the direction away from the starting end of the cold collecting channel to form the second partition plate.

In one embodiment, the partition structure is provided with a plurality of first diversion holes distributed along the circumferential direction of the cold-inlet current collecting channel. And, the partition structure is distributed with a plurality of second tap holes along the circumference of the cold-entering and current-collecting channel. It will be appreciated that by this arrangement, the refrigerant can more smoothly enter the cold flow passage layer.

The present application also provides a thermal management module comprising the heat exchanger of any of the above embodiments.

Compared with the prior art, the heat exchanger and the thermal management module provided by the application have the advantages that each partition structure is provided with the first flow dividing holes and the second flow dividing holes which are axially distributed along the cold inlet and flow collecting channel, and therefore each cold flow channel layer can be communicated with the cold inlet and flow collecting channel through the first flow dividing holes and the second flow dividing holes respectively. Therefore, the number of communication channels (comprising a first diversion hole and a second diversion hole) for the refrigerant to enter the cold flow channel layer from the cold flow collecting channel is increased, the probability that the refrigerant enters each cold flow channel layer is effectively balanced (specifically, the refrigerant does not enter the cold flow channel layer from one of the first diversion hole and the second diversion hole and can enter the cold flow channel layer from the other of the first diversion hole and the second diversion hole, obviously, the probability that the refrigerant does not enter a certain cold flow channel layer is greatly reduced), namely, the randomness of the refrigerant entering a certain cold flow channel layer in a concentrated mode is reduced, and therefore the distribution uniformity of the refrigerant in different cold flow channel layers is improved to a certain extent.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view of a heat exchanger according to an embodiment of the present disclosure;

fig. 2 is a partial cross-sectional view of a heat exchanger according to an embodiment of the present application at a cold header.

Reference numerals: 110. a cold inlet and collecting channel; 120. a cold flow channel layer; 200. a heat flow channel layer; 310. a refrigerant liquid inlet pipe; 320. a refrigerant liquid outlet pipe; 410. a cooling liquid inlet pipe; 420. a cooling liquid outlet pipe; 500. a heat exchange core; 600. a partition structure; 611. a first tap hole; 612. a second diversion aperture; 620. a first partition panel; 630. a second partition panel; 710. a first partition plate; 720. a second partition plate; 730. a seal ring structure; 731. a through hole; 800. and a three-way passage.

Detailed Description

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In battery thermal management systems, a battery cooler is typically used to cool the coolant to ensure that the battery is operating in a reasonable temperature range. The battery cooler is generally of a laminated structure, one side is cooled liquid, the other side is generally cooled medium, and the cooled medium is changed into a gas-liquid two-phase state after passing through an upstream expansion valve, and then the cooled medium of the gas-liquid two-phase enters the inside of the heat exchanger core.

In general, the heat exchanger is internally provided with a plurality of refrigerant channels connected in parallel, and when the refrigerant enters the plurality of refrigerant channels connected in parallel in a gas-liquid two-phase state, the distribution of the refrigerant in the liquid inlet channel is mainly influenced by the common effects of the inertia action of the refrigerant, the friction resistance of the inner wall of the liquid inlet channel and the gravity. And when the refrigerant enters the refrigerant channels one by one, the degree of influence of the refrigerant on the refrigerant channels is changed. Therefore, the distribution amount of the refrigerant entering different distribution channels through the liquid inlet channel is continuously changed. Therefore, the uniformity of the distribution of the refrigerant in the liquid inlet channel is very difficult to improve.

Referring to fig. 1-2, in order to improve the distribution uniformity of the refrigerant in the liquid inlet channel of the heat exchanger, the present application provides a heat exchanger and a thermal management module, the heat exchanger includes a refrigerant liquid inlet pipe 310, a refrigerant liquid outlet pipe 320, a cooling liquid inlet pipe 410, a cooling liquid outlet pipe 420 and a heat exchange core 500, the refrigerant enters the heat exchange core 500 from the refrigerant liquid inlet pipe 310 and leaves the heat exchange core 500 from the cooling liquid outlet pipe 320, the cooling liquid enters the heat exchange core 500 from the cooling liquid inlet pipe 410 and leaves the heat exchange core 500 from the cooling liquid outlet pipe 420, and the refrigerant and the cooling liquid exchange heat in the heat exchange core 500. The heat exchanger is provided with a heat inlet and collecting channel (not shown), a multi-layer heat flow channel layer 200 and a heat outlet and collecting channel (not shown) which are sequentially communicated, and is further provided with a cold inlet and collecting channel 110, a multi-layer cold flow channel layer 120 and a cold outlet and collecting channel (not shown) which are sequentially communicated, wherein the heat flow channel layer 200 and the cold flow channel layer 120 are alternately stacked. In addition, the refrigerant liquid inlet pipe 310 is communicated with the cold current collecting channel 110, the refrigerant liquid outlet pipe 320 is communicated with the cold current collecting channel, the cooling liquid inlet pipe 410 is communicated with the hot current collecting channel, the cooling liquid outlet pipe 420 is communicated with the hot current collecting channel, and the cold current channel layer 120 and the hot current channel layer 200 are both arranged in the heat exchange core 500. Further, a partition structure 600 is disposed at one end of the cold flow channel layer 120 near the cold flow collecting channel 110, and the partition structure 600 partitions the cold flow collecting channel 110 and the cold flow channel layer 120. Each partition structure 600 is provided with two first diversion holes 611 and second diversion holes 612 which are axially distributed along the cold-inflow and current-collecting channel 110, and the cold-inflow and current-collecting channel 110 can be respectively communicated with the same cold-flow channel layer 120 through the first diversion holes 611 and the second diversion holes 612.

Since each of the partition structures 600 is provided with two first and second tap holes 611 and 612 axially distributed along the cold collecting channel 110, each of the cold flow channel layers 120 can communicate with the cold collecting channel 110 through the first and second tap holes 611 and 612, respectively. In this way, the number of communication channels (including the first tap hole 611 and the second tap hole 612) for the refrigerant to enter the cold flow channel layer 120 from the cold flow collecting channel 110 is increased, so that the probability that the refrigerant enters each cold flow channel layer 120 is effectively balanced (specifically, the refrigerant does not enter the cold flow channel layer 120 from one of the first tap hole 611 and the second tap hole 612, but can enter the cold flow channel layer 120 from the other one of the first tap hole 611 and the second tap hole 612, obviously, the probability that the refrigerant does not enter a certain cold flow channel layer 120 is greatly reduced), that is, the randomness of the concentrated refrigerant entering a certain cold flow channel layer 120 is reduced, and therefore, the distribution uniformity of the refrigerant in different cold flow channel layers 120 is improved to a certain extent.

Specifically, the first diversion hole 611 is disposed on a side of the partition structure 600 near the start end of the cold-inflow and current-collecting channel 110, and the second diversion hole 612 is disposed on a side of the partition structure 600 away from the start end of the cold-inflow and current-collecting channel 110.

Further, in an embodiment, as shown in fig. 2, the heat exchanger includes a first partition plate 710 and a second partition plate 720 that are stacked, where the first partition plate 710 and the second partition plate 720 enclose the cold flow channel layer 120, and the first partition plate 710 is located on a side of the cold flow channel layer 120 away from the start end of the cold flow collecting channel 110, and the second partition plate 720 is located on a side of the cold flow channel layer 120 near the start end of the cold flow collecting channel 110. The partition structure 600 includes a first partition plate 620 and a second partition plate 630, one end of the first partition plate 620 is connected to the first partition plate 710, the other end extends toward a direction close to the start end of the cold-intake collecting channel 110, one end of the second partition plate 630 is connected to the second partition plate 720, the other end extends toward a direction away from the start end of the cold-intake collecting channel 110, and the first partition plate 620 and the second partition plate 630 are connected to form the partition structure 600.

In this manner, the structural complexity of the partition structure 600 is reduced, thereby reducing the processing cost of the partition structure 600.

Further, in an embodiment, as shown in fig. 2, an end of the first partition plate 620 remote from the first partition plate 710 and an end of the second partition plate 630 remote from the second partition plate 720 overlap and are welded to each other.

In this way, the connection strength of the partition structure 600 is improved.

Specifically, in one embodiment, the first partition plate 620 overlaps the side of the second partition plate 630 near the center line of the cold collecting channel 110. However, the present utility model is not limited thereto, and in other embodiments, the first partition plate 620 may overlap the side of the second partition plate 630 facing away from the center line of the cold collecting channel 110.

Still further, in an embodiment, the first partition 620 and the first partition 710 are integrally formed.

In this way, the difficulty of processing the partition structure 600 is effectively reduced.

Specifically, in one embodiment, as shown in fig. 2, an edge portion of the first partition plate 710 near the cold collecting channel 110 extends toward a direction near the start of the cold collecting channel 110 to form a first partition plate 620.

Further, in an embodiment, the second partition panel 630 and the second partition panel 720 are integrally formed.

In this way, the difficulty of processing the partition structure 600 is effectively reduced.

Specifically, in one embodiment, as shown in fig. 2, the edge portion of the second partition plate 720, which is close to the cold collecting channel 110, extends toward a direction away from the start end of the cold collecting channel 110 to form a second partition plate 630.

In one embodiment, as shown in fig. 2, an end of the first partition plate 710 near the cold collecting channel 110 and an end of the second partition plate 720 near the cold collecting channel 110 are sealed and attached to form an annular sealing ring structure 730, and the sealing ring structure 730 can separate the cold collecting channel 110 from the hot flow channel layer 200. The seal ring structure 730 is provided with through holes 731 penetrating along the axial direction thereof, so that adjacent cold flow channel layers 120 can be mutually communicated through the through holes 731, and the through holes 731 are communicated with the first diversion holes 611 and the second diversion holes 612 to form a three-way channel 800, so that the cold inlet and collector channel 110 and the adjacent cold flow channel layers 120 can be mutually communicated by two through the three-way channel 800.

In this way, the refrigerants in the adjacent cold flow path layers 120 can flow through the through holes 731, and the flow rate of the refrigerants in the different cold flow path layers 120 is further balanced. And, the three-way passage 800 formed by the communication of the first and second diverting holes 611 and 612 through the through hole 731 can make the refrigerant uniformly distributed to the greatest extent under the action of the internal hydraulic pressure.

In one embodiment, as shown in fig. 2, the partition structure 600 has a plurality of first tap holes 611 distributed along the circumferential direction of the cool inlet and collector passage 110. Also, the partition structure 600 is provided with a plurality of second tap holes 612 distributed along the circumferential direction of the cool inlet and collector passage 110.

Thus, the refrigerant can more smoothly enter the cold flow channel layer 120.

Specifically, the number of the first and second diverting holes 611 and 612 is four. However, in other embodiments, the number of the first and second diverting holes 611 and 612 may be two, three or more than four, which are not listed here.

The present application also provides a thermal management module comprising a heat exchanger as described in any one of the embodiments above.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. The heat exchanger is characterized by comprising a heat inlet flow collecting channel, a plurality of heat flow channel layers (200) and a heat outlet flow collecting channel which are communicated in sequence, and further comprising a cold inlet flow collecting channel (110), a plurality of cold flow channel layers (120) and a cold outlet flow collecting channel which are communicated in sequence, wherein the heat flow channel layers (200) and the cold flow channel layers (120) are alternately stacked;

a partition structure (600) is arranged at one end of the cold flow channel layer (120) close to the cold flow inlet and collecting channel (110), and the partition structure (600) partitions the cold flow inlet and collecting channel (110) and the cold flow channel layer (120); each partition structure (600) is provided with two first diversion holes (611) and second diversion holes (612) which are axially distributed along the cold inlet and collector channel (110), and the cold inlet and collector channel (110) can be communicated with the same cold flow channel layer (120) through the first diversion holes (611) and the second diversion holes (612) respectively.

2. The heat exchanger according to claim 1, comprising a first partition plate (710) and a second partition plate (720) which are stacked, wherein the first partition plate (710) and the second partition plate (720) are surrounded to form the cold flow channel layer (120), the first partition plate (710) is positioned at a side of the cold flow channel layer (120) away from a start end of the cold inlet and collector channel (110), and the second partition plate (720) is positioned at a side of the cold flow channel layer (120) close to the start end of the cold inlet and collector channel (110);

the partition structure (600) comprises a first partition plate (620) and a second partition plate (630), wherein one end of the first partition plate (620) is connected with the first partition plate (710), the other end of the first partition plate extends towards the direction close to the starting end of the cold inlet and collecting channel (110), one end of the second partition plate (630) is connected with the second partition plate (720), the other end of the second partition plate extends towards the direction away from the starting end of the cold inlet and collecting channel (110), and the first partition plate (620) and the second partition plate (630) are connected to form the partition structure (600).

3. The heat exchanger according to claim 2, wherein an end of the first partition plate (710) adjacent to the cold-intake and current-collecting channel (110) and an end of the second partition plate (720) adjacent to the cold-intake and current-collecting channel (110) are sealed and bonded to form an annular sealing ring structure (730), and the sealing ring structure (730) can separate the cold-intake and current-collecting channel (110) from the hot-flow channel layer (200);

the sealing ring structure (730) is provided with through holes (731) which are axially communicated with each other along the sealing ring structure, so that adjacent cold flow channel layers (120) can be mutually communicated through the through holes (731), and the through holes (731) are communicated with the first diversion holes (611) and the second diversion holes (612) to form a three-way channel (800), so that the cold inlet and collector channel (110) and the adjacent cold flow channel layers (120) can be mutually communicated in pairs through the three-way channel (800).

4. The heat exchanger according to claim 2, wherein an end of the first partition plate (620) remote from the first partition plate (710) and an end of the second partition plate (630) remote from the second partition plate (720) overlap and are welded to each other.

5. The heat exchanger according to claim 2, wherein the first partition plate (620) and the first partition plate (710) are of an integrally formed structure.

6. The heat exchanger according to claim 5, wherein an edge portion of the first partition plate (710) adjacent to the cold header passage (110) extends toward a direction adjacent to a start end of the cold header passage (110) to form the first partition plate (620).

7. The heat exchanger according to claim 2, wherein the second partition plate (630) and the second partition plate (720) are of an integrally formed structure.

8. The heat exchanger according to claim 7, wherein an edge portion of the second partition plate (720) adjacent to the cold header passage (110) extends toward a direction away from a start end of the cold header passage (110) to form the second partition plate (630).

9. The heat exchanger according to claim 1, wherein the partition structure (600) is distributed with a plurality of the first tap holes (611) along a circumferential direction of the cold inflow and collecting channel (110);

and, the partition structure (600) is provided with a plurality of second diversion holes (612) along the circumferential direction of the cold inlet and collector channel (110).

10. A thermal management module comprising the heat exchanger of any one of claims 1-9.

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