CN117175063A - A heat exchange component and battery system - Google Patents

Abstract

The application provides a heat exchange assembly and a battery system. The heat exchange assembly includes: a first liquid collecting member having a first liquid collecting chamber and a second liquid collecting chamber disposed adjacently; the water inlet end and the water outlet end of the heat exchange plate are arranged on the same side of the heat exchange plate and have different extension lengths; one of the water inlet end and the water outlet end of the heat exchange plate, which has a shorter extension length, is introduced into the first liquid collection chamber; the other one penetrates through the side wall of the first liquid collecting chamber and then is led into the second liquid collecting chamber. Through improving the liquid collecting chamber in the first liquid collecting component to optimize its and the water inlet end of heat exchange plate and go out the butt joint mode of water end, realized going into water in the homonymy of heat exchange plate, reduced space occupancy, make overall structure compacter. In addition, because the same side sets up water inlet and water outlet, needs its intake pipe and the two-way arrangement of return water pipeline, can make the whole temperature difference of heat exchanger plate little, and then to the cooling of corresponding battery more balanced.

Description

A heat exchange component and battery system

Technical field

The present invention relates to the technical field related to batteries, and in particular, to a heat exchange component and a battery system.

Background technique

Among related technologies, power batteries are increasingly used in applications such as automobiles. Power batteries generate heat during charging and discharging. In order to ensure the safety and working efficiency of the battery, corresponding liquid cooling plates will be set up for the battery to adjust the temperature. The traditional double-sided inlet and outlet liquid cooling plate has liquid collecting pipes on both sides, which has low space utilization and high manufacturing cost. At the same time, the temperature of the harmonica pipe at the water inlet end of the double-sided inlet and outlet liquid cooling plate is low, and the harmonica pipe at the water outlet end is low. The temperature is high and the temperature difference between the two ends of the liquid cooling plate is large, which affects the heat exchange effect.

Contents of the invention

In view of this, the purpose of this application is to provide a heat exchange component and a battery system to at least solve the technical problems of poor heat exchange effect and low space utilization of double-side entry and exit liquid cooling plates existing in the prior art.

In order to achieve the above purpose, this application provides the following technical solutions:

In a first aspect, this application provides a heat exchange component, which includes:

A first liquid collecting component having a first liquid collecting chamber and a second liquid collecting chamber arranged adjacently;

A heat exchange plate, the water inlet end and the water outlet end of the heat exchange plate are arranged on the same side of the heat exchange plate and have different extension lengths;

The one with the shorter extension length of the water inlet end and the water outlet end of the heat exchange plate is passed into the first liquid collection chamber; the other one penetrates the side wall of the first liquid collection chamber and then passes into the first liquid collection chamber. Second collection chamber.

In a second aspect, this application provides a battery system, which includes:

Battery;

And the heat exchange component according to the embodiment of the present application, wherein the heat exchange component is disposed on the battery.

In the above technical solution, a heat exchange component is provided. By improving the liquid collecting chamber in the first liquid collecting component and optimizing its docking method with the water inlet end and water outlet end of the heat exchange plate, the heat exchange plate is The water enters and exits on the same side, reducing the space occupation rate and making the overall structure more compact. In addition, since the water inlet and outlet are arranged on the same side, the water inlet and return pipes need to be arranged in two directions, which can make the overall temperature difference of the heat exchange plate small, and thus the cooling of the corresponding battery is more balanced.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of a heat exchange assembly according to an exemplary embodiment;

Figure 2 is a cross-sectional view (1) of a heat exchange assembly according to an exemplary embodiment;

Figure 3 is an enlarged view of part A in Figure 2;

Figure 4 is a cross-sectional view (2) of the heat exchange assembly according to an exemplary embodiment;

Figure 5 is an enlarged view of part B in Figure 4;

Figure 6 is a partial structural diagram of a heat exchange assembly according to an exemplary embodiment;

Figure 7 is a structural diagram of the water inlet end and the water outlet end of the heat exchange plate according to an exemplary embodiment.

In the picture:

10. Heat exchange plate; 101. Water inlet end; 102. Water outlet end; 20. First liquid collecting component; 201. First liquid collecting chamber; 2011. First side wall of the first liquid collecting chamber; 2012. First The second side wall of the liquid collecting chamber; 202. The second liquid collecting chamber; 2021. Shell structure; 30. The second liquid collecting component; 40. Elbow.

Detailed ways

The present application will be further described in detail below through the drawings and examples. Through these descriptions, the features and advantages of the present application will become clearer.

The word "exemplary" as used herein means "serving as an example, example, or illustrative." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or superior to other embodiments. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

In related technologies, the traditional double-side entry liquid cooling plate has liquid collecting pipes on both sides, which has low space utilization and high manufacturing cost. At the same time, the temperature of the harmonica pipe at the water inlet end of the double-side entry liquid cooling plate is low. The temperature of the harmonica pipe at the water outlet is high, and the temperature difference between the two ends of the liquid cooling plate is large, which affects the heat exchange effect.

This application provides a heat exchange assembly. By optimizing the liquid collecting chamber in the first liquid collecting component, a first liquid collecting chamber and a second liquid collecting chamber are formed side by side, and the first liquid collecting component and the heat exchange plate are improved. The docking method of the water inlet end and the water outlet end realizes the water inlet and outlet on the same side of the heat exchange plate. On the one hand, the space occupancy rate can be reduced, making the overall structure more compact; on the other hand, since the water inlet and outlet ends are set up on the same side, the water inlet and return pipelines form a bidirectional arrangement, which can make heat exchange The overall temperature difference of the board is small, which results in a more balanced cooling of the corresponding battery.

The technical solution of this embodiment will be described in detail below with reference to the accompanying drawings. The following embodiments and implementation modes may be combined with each other as long as there is no conflict.

An exemplary embodiment of the present invention provides a heat exchange assembly, as shown in Figure 1 . Figure 1 is a schematic diagram of a heat exchange assembly according to an exemplary embodiment. Heat exchange components include:

The first liquid collecting component 20 has a first liquid collecting chamber 201 and a second liquid collecting chamber 202 arranged adjacently;

Heat exchange plate 10, the water inlet end 101 and the water outlet end 102 of the heat exchange plate 10 are arranged on the same side of the heat exchange plate 10 and have different extension lengths, as shown in Figures 2 and 4;

The shorter one of the water inlet end 101 and the water outlet end 102 of the heat exchange plate 10 leads into the first liquid collecting chamber 201; the other one penetrates the side wall of the first liquid collecting chamber 201 and then flows into the second liquid collecting chamber 201. Liquid collection chamber 202, as shown in Figures 3 and 5.

In this exemplary embodiment, the first liquid collecting chamber 201 and the second liquid collecting chamber 202 of the first liquid collecting component 20 are arranged adjacent to each other and are relatively close to the water inlet end 101 and the water outlet end 102 of the heat exchange plate 10 . When connecting a long one, directly pass the longer one of the water inlet end 101 and the water outlet end 102 through the first liquid collection chamber 201 and then communicate with the second liquid collection chamber 202. There is no need to connect/form the water inlet end 101 and the water outlet. The heat exchange pipeline at end 102 is adjusted at the corresponding position to form an "elbow", and is passed through the corresponding "elbow" to other sides of the second liquid collecting chamber 202 (the side not adjacent to the first liquid collecting chamber 201). Thereby, the water inlet end 101 and the water outlet end 102 in the form of "bent pipes" are prevented from occupying too much space when connected to the first liquid collection component 20 .

For example, as shown in Figure 7, the first liquid collecting chamber 201 and the second liquid collecting chamber 202 are arranged side by side on the same horizontal plane; correspondingly, the heat exchange pipes (both straight pipes) in the heat exchange plate 10 are on the same side. Both ends of the pipe can be directly used as the water inlet end 101 and the water outlet end 102, that is, the water inlet end 101 and the water outlet end 102 are both formed by corresponding ends of the heat exchange pipeline. After the first liquid collecting part 20 is connected to the heat exchange plate 10, the overall thickness of the heat exchange assembly (corresponding to the thickness in the vertical direction when the heat exchange plate 10 and the first liquid collecting part 20 are in a flat state) Smaller, effectively reducing the space occupied by the heat exchange components.

In some alternative ways, as shown in Figure 5, the water inlet end 101 and the water outlet end 102 can also be corresponding transition components, that is, forming "adapters" of different lengths, and connecting the first set of components in the form of "adapters". The heat exchange pipeline of the liquid component 20 and the heat exchange plate 10. If it is necessary to explain, the water inlet end 101 and the water outlet end 102 can be integrally formed; they can also be made separately. When the water inlet end 101 and the water outlet end 102 are made separately, an appropriate number of assembly holes can be opened on the first liquid collection component 20 .

In some exemplary embodiments, as shown in FIGS. 4-5 , considering that the water temperature in the water outlet pipeline in which the water outlet end 102 is formed (or connected) at the end is relatively high, the water inlet end 101 is formed (or connected) at the end. The water temperature in the water inlet pipe is relatively low. In order to reduce the impact of the water in the water outlet 102 on the water in the water inlet 101 and improve the cooling effect of the water on the battery, in this embodiment, the water inlet 101 and the water outlet are also targeted. The selection of end 102 is optimized so that the first liquid collecting chamber 201 close to the heat exchange plate 10 is connected with the water inlet end 101 .

For example, the extension length of the water outlet end 102 of the heat exchange plate 10 is greater than the extension length of the water inlet end 101 of the heat exchange plate 10 . At this time, the first liquid collecting chamber 201 is a water inlet chamber and is connected to the water inlet end 101; the second liquid collecting chamber 202 is a water outlet chamber and is connected to the water outlet end 102. This design method allows the water from the water inlet end 101 to flow into the heat exchange plate 10 as quickly as possible to cool the battery, thereby improving the heat exchange efficiency.

In some exemplary embodiments, as shown in FIG. 1 , the heat exchange assembly further includes: a second liquid collecting component 30 , which is used as a transfer chamber for water inlet and return water in the heat exchange plate 10 . After the cooling water (inlet water at this time) enters the heat exchange plate 10 through the water inlet end 101 and exchanges heat with the corresponding battery, it then enters the second liquid collecting component 30. Then, the inlet water in each heat exchange pipeline is After mixing in the second liquid collecting part 30, the cooling water (return water at this time) is transported to the water outlet end 102 through the water outlet pipeline in the heat exchange plate 10, and is discharged through the second liquid collecting chamber 202. After adding the second liquid collection part 30 as a transfer warehouse, the cooling water temperature can be balanced to avoid a large increase in the internal cooling water temperature of some heat exchange pipelines after cooling the battery, which will affect the downstream (cooling water in the second half of the process) (converted to return water), further ensuring balanced heat exchange for the battery.

When a battery has multiple battery packs, a heat exchange component can be provided for each battery pack. In this case, each heat exchange component needs to cover each battery in the battery pack. After the second liquid collecting component 30 is disposed at the other end of the heat exchange plate 10 away from the water inlet end 101/water outlet end 102, it can be ensured that the inlet water has a relatively high flow rate when flowing along the length direction of the heat exchange plate 10. A long and smooth water flow path, which can synchronously cool each battery cell in the battery pack (in which the battery cells are arranged side by side). Correspondingly, the return water flow path corresponding to the return water part is similar to the inlet water flow path. Based on this setting method, it can ensure that the temperature regulation effect of each battery cell in the corresponding battery pack is more balanced.

In this embodiment, in order to achieve the above-mentioned balanced temperature regulation effect for each battery cell in the battery pack, the heat exchange plate 10 exemplarily includes: a plurality of heat exchange pipelines arranged side by side. A part of the heat exchange pipelines among the plurality of heat exchange pipelines serves as a water inlet pipe group. One end of the water inlet pipe group is connected to the water inlet end 101 and communicates with the first liquid collecting component 20, and the other end communicates with the second liquid collecting component 30; multiple Another part of the heat exchange pipeline serves as a water outlet pipe group. One end of the water outlet pipe group is connected to the water outlet end 102 and communicates with the first liquid collection component 20 , and the other end communicates with the second liquid collection component 30 . Based on this, the two parts of the heat exchange pipes of the heat exchange plate 10 cooperate with the second liquid collecting component 30 to form a similar "U-shaped" hot water flow channel.

It should be noted that there may be a certain height difference between the water inlet end 101 and the water outlet end 102 when they are connected to the first liquid collecting component 20 . In order to fit the corresponding battery, when the heat exchange pipeline is connected to the water inlet end 101 and the water outlet end 102, an elbow 40 can be formed or added at the end of the heat exchange pipeline to connect with the corresponding water inlet end 101 and 102. The water outlet end 102 is connected; when the ends of the heat exchange pipeline are used to directly form the water inlet end 101 and the water outlet end 102, the elbow 40 can be directly formed near the water inlet end 101 and the water outlet end 102.

In some exemplary embodiments, as shown in Figures 1 to 7, among the multiple heat exchange pipelines, the sum of the cross-sectional areas of the water flow channels formed by the heat exchange pipelines corresponding to the water inlet end 101 is S ₁ , corresponding to The total cross-sectional area of the water flow channels formed by the heat exchange pipes at the water outlet 102 is S ₂ , and the ratio of S ₁ to S ₂ is M, where the value range of M is 0.8-1.2, such as 0.8, 0.9, 1.0, 1.1 ,1.2 etc. For example, the cross-sectional areas of multiple heat exchange pipes are the same. When M is 1, the number of water inlet pipe groups and outlet pipe groups at this time is the same, and the two sets of heat exchange pipes are laid flat, that is, all exchangers have the same number. Each heat exchange pipe in the hot plate 10 is located at the same horizontal height.

Based on this, the flow balance in each heat exchange pipeline can be ensured. At the same time, since the temperature of the inlet and return water of the heat exchange plate 10 will gradually rise when flowing, the water inlet end 101 with the largest temperature difference in the heat exchange water flow channel and The water outlet 102 is located on the same side, and a "U-shaped" hot water flow channel is used to cool the battery. This can take into account each battery cell and achieve the cooling effect of each battery cell in the battery corresponding to the same heat exchange component. More balanced.

In some exemplary embodiments, as shown in Figures 4-5, the first liquid collection chamber 201 is a box-shaped structure, and corresponding assembly holes are opened in the box-shaped structure. A first hole is provided on the first side wall 2011 of the first liquid collection chamber, and the first hole is used to penetrate the water inlet end 101 and the water outlet end 102; the second liquid collection chamber 201 has a second hole opposite to the first side wall. A second hole is provided on the side wall, and the second hole is used to penetrate the water outlet end 102 to communicate with the second liquid collecting chamber 202 . Designing the first liquid collection chamber 201 as a box-shaped structure makes it easy to open corresponding holes on its side walls to complete the assembly with the water inlet end 101 and the water outlet end 102 of the heat exchange plate 10 .

Similarly, the second liquid collecting chamber 202 has a box-shaped structure, and an assembly hole is also provided in it. The first side wall of the second liquid collecting chamber 202 is connected to the second side wall 2012 of the first liquid collecting chamber. The first side wall of the second liquid collecting chamber 202 is provided with a third hole, and the third hole is used for penetration. Water outlet 102. After the second liquid collecting chamber 202 is designed as a box-shaped structure, on the one hand, it is convenient to open a hole to connect with the corresponding water inlet end 101 or the water outlet end 102; on the other hand, it is also convenient for the second liquid collecting chamber 202 to be connected with the first liquid collecting chamber. Rooms 201 are arranged side by side, making the overall structure more regular and beautiful.

It should be noted that when making the first liquid collecting component 20, two independent box-shaped structures can be used for the first liquid collecting chamber 201 and the second liquid collecting chamber 202, and then fixedly connected to keep them relatively stable. In addition, when making the first liquid collecting part 20, the first liquid collecting chamber 201 and the second liquid collecting chamber 202 can be integrated into one another, that is, two adjacent cavity structures are formed inside a box-shaped body. The first liquid collecting chamber 201 and the second liquid collecting chamber 202.

In some other alternative ways of making the first liquid collecting part 20, it can also be made by using a folding plate and a cavity of a box-shaped structure. For example, it can be made by using a U-shaped folding plate and a box-shaped cavity. It should be noted that when the box-shaped structure and the folding plate are used to cooperate, sealing is formed at both ends of the first liquid collection part 20 (corresponding to the two ends of the folding plate) (at this time, the U-shaped structure and the sealing cooperate to form a belt. The shell structure 2021) of the gap in the box structure can be assembled, and the water outlet can be set according to actual needs.

Specifically, as shown in FIG. 6 , the first liquid collecting component 20 includes: a shell structure 2021 with a gap, and the shell structure 2021 is fitted with the box-shaped structure forming the first liquid collecting chamber 201 . The first liquid collection chamber 201 is at least partially embedded in the shell structure 2021 through the gap, so that the shell structure 2021 cooperates with the second side wall 2012 of the first liquid collection chamber to form the second liquid collection chamber 202. At this time, it is convenient to open holes (including the first hole and the second hole) penetrating the two opposite sides of the box-shaped structure forming the first liquid collection chamber 201, and then fit it with the shell structure 2021. This method is less difficult to process and has low material cost, making it more economical and practical.

In another alternative method of using "the outer shell structure cooperates with the first liquid collecting chamber", the second side wall of the first liquid collecting chamber is sealed at the edge of the gap, so that the outer shell structure and the second side wall of the first liquid collecting chamber The walls cooperate to form a second collection chamber. At this time, the notch edge of the shell structure is directly aligned with the edge of the second side wall of the first liquid collection chamber (or the outer wall surface of the second side wall), and is sealed and connected by welding.

In addition, when the cooling medium in the heat exchange plate 10 is water, if leakage occurs, battery safety will be affected. In order to ensure the sealing of the second liquid collecting chamber 202, the connection between the notch of the shell structure 2021 and the first liquid collecting chamber 201 is sealed. Welding is preferred to prevent leakage.

In some exemplary embodiments, as shown in Figure 6, the length range of the water inlet end 101 embedded in the first liquid collection chamber 201 is 0-2mm, such as 0.5, 1mm, 1.5mm, 2mm, etc.; the water outlet end 102 is embedded in the second liquid collecting chamber 201. The length range of the liquid collection chamber 202 is 0-2mm, such as 0.5, 1mm, 1.5mm, 2mm, etc.

Since the water inlet end 101 is inserted into the first liquid collecting chamber 201 and extends out to a certain length, and the water outlet end 102 is embedded into the second liquid collecting chamber 202 and also extends out to a certain length, the docking stability can be ensured. In addition, in order to ensure the sealing between the water inlet end 101 and the first liquid collecting chamber 201 and the water outlet end 102 and the second liquid collecting chamber 202, corresponding sealing structures can also be provided for sealing processing. For example, the sealing structure may use a sealing ring or sealing strip.

In some exemplary embodiments, as shown in Figures 3, 5 and 6, the volume ratio of the first liquid collection chamber 201 to the second liquid collection chamber 202 is N, and the range of N is 0.8-1.2, such as 0.8, 0.9, 1.0, 1.1, 1.2, etc. It should be noted that the volume of the first liquid collection chamber 201 refers to the remaining portion after removing the internal space occupied by the water outlet end 102 (the water outlet end 102 needs to occupy a certain space when it penetrates the first liquid collection chamber 201). Optionally, N can be 1. At this time, the volume of the first liquid collection chamber 201 is equal to the volume of the second liquid collection chamber 202, and the flow rate of the incoming water and the return water in the corresponding pipelines can be better controlled to ensure the heat exchange effect.

In some exemplary embodiments, as shown in Figures 3, 5 and 6, since the first liquid collecting chamber 201 and the second liquid collecting chamber 202 are arranged adjacently, in order to further reduce the distance between the first liquid collecting chamber 201 and the second liquid collecting chamber 202, Heat exchange between liquid collection chambers 202. In this embodiment, a heat insulation layer is provided on the second side wall 2012 of the first liquid collecting chamber to insulate the first liquid collecting chamber 201 and the second liquid collecting chamber 202 .

Illustratively, taking the first liquid collecting component 20 made by using a folding plate and a cavity of a box-shaped structure, the heat insulation layer is laid along the extending direction of the second side wall 2012 of the first liquid collecting chamber and is located on the second liquid collecting chamber. The side of the two side walls facing the second liquid collection chamber 202.

In addition, when both the first liquid collecting chamber 201 and the second liquid collecting chamber 202 are assembled using box-shaped structures, a heat insulation layer can be laid at the connection between the two box-shaped structures. When the first liquid collecting chamber 201 and the second liquid collecting chamber 202 are formed into a box-shaped structure, the first liquid collecting chamber 201 and the second liquid collecting chamber 202 are two adjacent chambers. The thermal insulation layer can be laid on at least one side of the inner partition dividing the two chambers.

Exemplary embodiments of the present invention also provide a battery system. The battery system includes: a battery; and any of the above heat exchange components, the heat exchange component is arranged on the battery.

In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "back", "left", "right", etc. indicate the orientation or position The relationship is an orientation or positional relationship based on the working state of the present application. It is only for the convenience of describing the present application and simplifying the description. It does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be construed as a limitation on this application.

In the description of this application, it should be noted that, unless otherwise explicitly stated and limited, the terms "installation", "connection" and "connection" should be understood broadly. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

The present application has been described above with reference to preferred embodiments, but these embodiments are only exemplary and serve an illustrative purpose. On this basis, various substitutions and improvements can be made to the present application, which all fall within the protection scope of the present application.

Claims (12)

1. A heat exchange assembly, the heat exchange assembly comprising:

a first liquid collecting member having a first liquid collecting chamber and a second liquid collecting chamber disposed adjacently;

the water inlet end and the water outlet end of the heat exchange plate are arranged on the same side of the heat exchange plate and have different extension lengths;

one of the water inlet end and the water outlet end of the heat exchange plate, which has a shorter extension length, is introduced into the first liquid collection chamber; and the other one penetrates through the side wall of the first liquid collecting chamber and then is led into the second liquid collecting chamber.

2. The heat exchange assembly of claim 1 wherein the extension of the water outlet end of the heat exchange plate is greater than the extension of the water inlet end of the heat exchange plate,

the first liquid collecting chamber is a water inlet chamber and is communicated with the water inlet end; the second liquid collecting chamber is a water outlet chamber and is communicated with the water outlet end.

3. The heat exchange assembly of claim 1, further comprising: a second liquid collecting part, which is arranged on the upper surface of the first liquid collecting part,

wherein, the heat exchange plate includes: a plurality of heat exchange pipelines arranged side by side,

a part of heat exchange pipelines in the plurality of heat exchange pipelines are used as a water inlet pipe group, one end of the water inlet pipe group is connected with the water inlet end and communicated with the first liquid collecting component, and the other end of the water inlet pipe group is communicated with the second liquid collecting component;

and the other part of heat exchange pipelines in the plurality of heat exchange pipelines are used as a water outlet pipe group, one end of the water outlet pipe group is connected with the water outlet end and communicated with the first liquid collecting component, and the other end of the water outlet pipe group is communicated with the second liquid collecting component.

4. A heat exchange assembly according to claim 3, wherein the sum of cross-sectional areas S of water flow passages formed by the heat exchange tubes corresponding to the water inlet end ₁ Sum of cross-sectional areas S of water flow channels formed by heat exchange pipelines corresponding to the water outlet ends ₂ The ratio is M, wherein the value range of M is 0.8-1.2.

5. The heat exchange assembly of any one of claims 1-4 wherein the first plenum is a box-type structure,

a first hole is formed in the first side wall of the first liquid collecting chamber, and the first hole is used for penetrating the water inlet end and the water outlet end; the second side wall of the first liquid collecting chamber opposite to the first side wall is provided with a second hole, and the second hole is used for penetrating out of the water outlet end to be communicated with the second liquid collecting chamber.

6. The heat exchange assembly of claim 5 wherein the second plenum is a box-type structure,

the first side wall of the second liquid collecting chamber is connected with the second side wall of the first liquid collecting chamber, a third hole is formed in the first side wall of the second liquid collecting chamber, and the third hole is used for penetrating into the water outlet end.

7. The heat exchange assembly of claim 5 wherein the first liquid collection member comprises: a housing structure having a notch; wherein,

the first liquid collecting chamber is at least partially embedded into the shell structure through the notch, so that the shell structure is matched with the second side wall of the first liquid collecting chamber to form the second liquid collecting chamber; or,

the second side wall of the first liquid collecting chamber is sealed at the edge of the notch, so that the shell structure is matched with the second side wall of the first liquid collecting chamber to form the second liquid collecting chamber.

8. The heat exchange assembly of claim 7 wherein the gap of the housing structure is in sealing connection with the junction of the first plenum.

9. The heat exchange assembly of claim 1 wherein the length of the water inlet end embedded in the first plenum is in the range of 0-2mm; the length range of the water outlet end embedded into the second liquid collecting chamber is 0-2mm.

10. The heat exchange assembly of claim 1 wherein the ratio of the volume of the first plenum to the volume of the second plenum is N, N being in the range of 0.8-1.2.

11. The heat exchange assembly of claim 1 wherein a thermal barrier is provided on the second side wall of the first plenum to thermally insulate the first and second plenums.

12. A battery system, the battery system comprising:

a battery;

and the heat exchange assembly of any one of claims 1-11 disposed on the battery.