Harmonica type liquid cooling plate

Abstract

According to the harmonica-type liquid cooling plate, gaps are formed in the two sides of a harmonica-type tube, and the harmonica-type tube is divided into an upper side circulation chamber and a lower side circulation chamber by taking the two gaps as boundaries; the first current collector is fixed on one side of the harmonica-shaped tube, a partition rib is arranged in the first current collector to divide the first current collector into an upper side chamber aligned and communicated with the upper side circulation chamber and a lower side chamber aligned and communicated with the lower side circulation chamber, and the first current collector is further provided with a cooling liquid inlet for guiding in cooling liquid and a cooling liquid outlet for guiding out cooling liquid which are located on the same side; the second current collector is fixed to the other side, opposite to the first current collector, of the harmonica-shaped tube, the second current collector is provided with an inner cavity communicating with the upper side circulation chamber and the lower side circulation chamber at the same time, and the cooling liquid inlet, the upper side cavity, the upper side circulation chamber, the inner cavity, the lower side circulation chamber, the lower side cavity and the cooling liquid outlet form a liquid flow path. The harmonica-type liquid cooling plate overcomes the defects of poor cooling and heating uniformity and difficulty in cooling a high-temperature region of a battery cell, and meanwhile, the occupied space of series pipelines is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery packs and new energy vehicles, in particular to a harmonica - type liquid - cooling plate. Background Art

[0002] At present, the liquid - cooling plates in power battery packs are mainly stamping liquid - cooling plates and harmonica - type liquid - cooling plates. The stamping liquid - cooling plate has a flexible flow - channel design and good heat - transfer uniformity for the battery cells. However, it needs to be designed in cooperation with the box body, which takes a long time and is difficult, and also requires mold opening, so the cost is high and the cycle is long. The harmonica - type liquid - cooling plate has a simple structure, a single flow - channel form, a short design time and a short sample - making cycle, but has poor heat - transfer uniformity for the battery cells, it is difficult to cool the high - temperature areas of the battery cells, and there are many series pipelines between the cold plates, resulting in a low integration degree of the liquid - cooling system.

[0003] The above information disclosed in the background art is only used to enhance the understanding of the background of the utility model, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a harmonica - type liquid - cooling plate, which improves the heat - transfer uniformity and heat - transfer capacity of the cold plate, and at the same time reduces the space occupied by the series pipelines.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A harmonica - type liquid - cooling plate of the utility model includes:

[0007] A harmonica tube, which has notches on both sides and is divided into an upper - side flow - through chamber and a lower - side flow - through chamber with the two notches as boundaries.

[0008] A first current collector, which is fixed on one side of the harmonica tube. The first current collector is provided with partition ribs inside to divide it into an upper - side chamber aligned and communicating with the upper - side flow - through chamber and a lower - side chamber aligned and communicating with the lower - side flow - through chamber. The first current collector is also provided with a coolant inlet for introducing coolant and a coolant outlet for discharging coolant on the same side.

[0009] A second current collector, which is fixed on the other side of the harmonica tube relative to the first current collector. The second current collector has an inner cavity that simultaneously communicates with the upper - side flow - through chamber and the lower - side flow - through chamber. The coolant inlet, the upper - side chamber, the upper - side flow - through chamber, the inner cavity, the lower - side flow - through chamber, the lower - side chamber and the coolant outlet form a liquid flow path.

[0010] In the described harmonica - type liquid - cooling plate, the coolant inlet communicates with the upper - side chamber and the coolant outlet communicates with the upper - side chamber.

[0011] In the described harmonica - type liquid - cooling plate, the second current collector is provided with ribs extending towards the inner cavity.

[0012] In the described harmonica - type liquid - cooling plate, the ribs and the two notches are coplanar.

[0013] In the described harmonica - type liquid - cooling plate, the harmonica tube is a hollow rectangular plate.

[0014] In the described harmonica - type liquid - cooling plate, notches are opened at the middle height on both sides of the harmonica tube.

[0015] In the described harmonica - type liquid - cooling plate, the harmonica - type liquid - cooling plate is a symmetric structure.

[0016] In the described harmonica - type liquid - cooling plate, the outer shape of the first current collector is exactly equal to that of the second current collector.

[0017] In the described harmonica - type liquid - cooling plate, the cross - sectional area of the upper - side chamber is larger than that of the upper - side flow - through chamber.

[0018] In the described harmonica - type liquid - cooling plate, multiple harmonica - type liquid - cooling plates are arranged in an array. The total inlet water pipe is connected to the coolant inlet of all the harmonica - type liquid - cooling plates, and the total outlet water pipe is connected to the coolant outlet of all the harmonica - type liquid - cooling plates.

[0019] In the above technical solution, the harmonica - type liquid - cooling plate provided by the present utility model has the following beneficial effects: In the harmonica - type liquid - cooling plate, the coolant in the harmonica tube no longer flows from one side to the other side, but the harmonica tube is divided into upper and lower two flow regions, and the cooling liquid flows bidirectionally therein, reducing the temperature difference of the entire liquid - cooling plate and improving the temperature consistency between the battery cells. In this harmonica - type liquid - cooling plate, the total inlet and outlet water pipes are on the same side, improving the space utilization rate; the harmonica plate is divided into upper and lower two flow regions, the cross - sectional area of the coolant flow becomes smaller, and the flow rate of the coolant increases, improving the heat - transfer performance of the liquid - cooling plate. Notches are opened on both sides of the harmonica tube to cooperate with the assembly of the current collector. This harmonica - type liquid - cooling plate solves the problems of poor cooling and heating uniformity, difficulty in cooling the high - temperature region of the battery cells, and at the same time reduces the space occupied by the series pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the harmonica - type liquid - cooling plate of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of the harmonica tube of the harmonica - type liquid - cooling plate of the present utility model;

[0023] Figure 3 Structural schematic diagram of the first current collector of the harmonica - type liquid - cooling plate described in the present utility model;

[0024] Figure 4 Cross - sectional schematic diagram of the first current collector of the harmonica - type liquid - cooling plate described in the present utility model;

[0025] Figure 5 Structural schematic diagram of the second current collector of the harmonica - type liquid - cooling plate described in the present utility model;

[0026] Figure 6 Cross - sectional schematic diagram of the second current collector of the harmonica - type liquid - cooling plate described in the present utility model;

[0027] Figure 7 Cross - sectional schematic diagram of the harmonica - type liquid - cooling plate described in the present utility model;

[0028] Figure 8 Arrangement schematic diagram of the harmonica - type liquid - cooling plate described in the present utility model in a whole package;

[0029] In the figure;

[0030] Reference numerals are as follows: harmonica tube 1, notch 2, upper - side flow chamber 3, lower - side flow chamber 4, first current collector 5, second current collector 6, partition rib 7, upper - side chamber 8, lower - side chamber 9, coolant inlet 10, coolant outlet 11, inner cavity 12, total inlet water pipeline 13, total outlet water pipeline 14. Specific embodiments

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0032] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0033] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0036] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the top of", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom of", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0038] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the drawings.

[0039] As Figure 1-5 shown, in one embodiment, a harmonica-type liquid cooling plate of the present utility model includes

[0040] A harmonica tube 1 has notches 2 on both sides, and the harmonica tube 1 is divided into an upper flow chamber 3 and a lower flow chamber 4 with the two notches 2 as boundaries;

[0041] A first current collector 5 is fixed to one side of the harmonica tube 1. A partition rib 7 is provided in the first current collector 5 to divide it into an upper chamber 8 aligned and communicating with the upper flow chamber 3 and a lower chamber 9 aligned and communicating with the lower flow chamber 4. The first current collector 5 is also provided with a coolant inlet 10 for introducing coolant and a coolant outlet 11 for discharging coolant on the same side;

[0042] A second current collector 6 is fixed to the other side of the harmonica tube 1 relative to the first current collector 5. The second current collector 6 has an inner cavity 12 that simultaneously communicates with the upper flow chamber 3 and the lower flow chamber 4. The coolant inlet 10, the upper chamber 8, the upper flow chamber 3, the inner cavity 12, the lower flow chamber 4, the lower chamber 9, and the coolant outlet 11 form a liquid flow path.

[0043] In a preferred embodiment of the described harmonica - type liquid - cooling plate, the coolant inlet 10 communicates with the upper chamber 8 and the coolant outlet 11 communicates with the upper chamber 8.

[0044] In a preferred embodiment of the described harmonica - type liquid - cooling plate, ribs extending towards the inner cavity 12 are provided in the second current collector 6.

[0045] In a preferred embodiment of the described harmonica - type liquid - cooling plate, the ribs and the two notches 2 are coplanar.

[0046] In a preferred embodiment of the described harmonica - type liquid - cooling plate, the harmonica tube 1 is a hollow rectangular plate.

[0047] In a preferred embodiment of the described harmonica - type liquid - cooling plate, notches 2 are provided at the middle height on both sides of the harmonica tube 1.

[0048] In a preferred embodiment of the described harmonica - type liquid - cooling plate, the harmonica - type liquid - cooling plate is a symmetric structure.

[0049] In a preferred embodiment of the described harmonica - type liquid - cooling plate, the outer shape of the first current collector 5 is exactly the same as that of the second current collector 6.

[0050] In a preferred embodiment of the described harmonica - type liquid - cooling plate, the cross - sectional area of the upper chamber 8 is larger than the cross - sectional area of the upper flow chamber 3.

[0051] In a preferred embodiment of the described harmonica - type liquid - cooling plate, multiple harmonica - type liquid - cooling plates are arranged in an array. A total inlet water pipe 13 communicates with the coolant inlets 10 of all the harmonica - type liquid - cooling plates, and a total outlet water pipe 14 communicates with the coolant outlets 11 of all the harmonica - type liquid - cooling plates.

[0052] In one embodiment, the first current collector 5 and the second current collector 6 are respectively fixed to both sides of the corrugated tube 1 by brazing. As Figure 2 shown, there are notches 2 opened at the middle height on both sides of the corrugated tube 1. Taking the two notches 2 as the boundaries, the corrugated tube 1 is divided into an upper side flow-through chamber 3 and a lower side flow-through chamber 4. As Figure 3-4 shown, a partition rib 7 is added inside the first current collector 5 to divide the interior of the current collector into two independent chambers, namely an upper side chamber 8 and a lower side chamber 9. Two openings are respectively opened on both sides of the first current collector 5 for connecting the series pipelines between the corrugated cold plates. As Figure 5-6 shown, a rib is also added inside the second current collector 6, but the inner cavity 12 is not divided into two independent chambers.

[0053] As Figure 7 shown, when the coolant enters the upper side chamber 8 of the first current collector 5, due to the blockage of the partition rib 7, the cooling liquid will not enter the lower side chamber 9, but will enter the upper side flow-through chamber 3 of the corrugated tube 1, and then sequentially enter the second current collector 6, the lower side flow-through chamber 4 of the corrugated tube 1 and the lower side chamber 9.

[0054] As Figure 8 shown, the corrugated liquid cooling plates are connected through quick-connect joints, or through brazing of metal pipelines, or through expansion connection of plastic pipelines. The entire liquid cooling pipeline also has a total water inlet pipeline 13 and a total water outlet pipeline 14. And the total water inlet and the total water outlet are on the same side.

[0055] Finally, it should be noted that: the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope protected by the present application.

[0056] Some exemplary embodiments of the present invention have been described above only by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A harmonica-type liquid cooling plate, characterized in that: These include, The harmonica pipe has notches on both sides and the two notches are used as boundaries to divide the harmonica pipe into an upper flow chamber and a lower flow chamber; A first current collector is fixed to one side of the harmonica tube, wherein a partition rib is provided inside the first current collector to divide the first current collector into an upper chamber aligned with and connected to the upper flow chamber and a lower chamber aligned with and connected to the lower flow chamber, and the first current collector is also provided with a coolant inlet for introducing coolant and a coolant outlet for conducting coolant on the same side; A second current collector is fixed to the other side of the harmonica tube relative to the first current collector, and the second current collector has an inner cavity that is connected to the upper flow chamber and the lower flow chamber at the same time, and the cooling liquid inlet, the upper chamber, the upper flow chamber, the inner cavity, the lower flow chamber, the lower chamber and the cooling liquid outlet constitute a liquid flow path.

2. The harmonica-type liquid cooling plate according to claim 1, characterized in that: The coolant inlet is connected to the upper chamber and the coolant outlet is connected to the upper chamber.

3. The harmonica type liquid cooling plate according to claim 1, characterized in that: The second current collector is provided with ribs extending toward the inner cavity.

4. The harmonica-type liquid cooling plate according to claim 2, characterized in that: The rib is coplanar with the two notches.

5. The harmonica-type liquid cooling plate according to claim 1, characterized in that: The harmonica pipe is a hollow rectangular plate.

6. The harmonica-type liquid cooling plate according to claim 1, characterized in that: Notches are provided at middle heights on both sides of the harmonica pipe.

7. The harmonica-type liquid cooling plate according to claim 1, characterized in that: The harmonica-style liquid cooling plate has a symmetrical structure.

8. The harmonica-type liquid cooling plate according to claim 1, characterized in that: The first current collector has an appearance that is identical to that of the second current collector.

9. The harmonica type liquid cooling plate according to claim 1, characterized in that: The cross-sectional area of ​​the upper chamber is larger than the cross-sectional area of ​​the upper flow chamber.

10. The harmonica type liquid cooling plate according to claim 1, characterized in that: A plurality of harmonica-type liquid cooling plates are arranged in an array, a total water inlet pipeline is connected to the cooling liquid inlets of all harmonica-type liquid cooling plates, and a total water outlet pipeline is connected to the cooling liquid outlets of all harmonica-type liquid cooling plates.

Images