Liquid cooling plate assembly, liquid cooling heat dissipation battery module and battery pack

Abstract

The utility model discloses a liquid cooling plate assembly, a liquid cooling heat dissipation battery module and a battery pack. The battery pack comprises a shell and a liquid cooling heat dissipation battery module mounted on the shell. The liquid cooling heat dissipation battery module comprises a liquid cooling plate assembly and a battery cell, the liquid cooling plate assembly comprises a first liquid cooling plate which extends along a first direction; the second liquid cooling plates extend in the second direction, the multiple second liquid cooling plates are arranged on the same side plate surface of the first liquid cooling plate at intervals in the first direction, and every two adjacent second liquid cooling plates and the first liquid cooling plate define a containing space used for containing a battery cell; wherein the first direction and the second direction intersect. The utility model aims to improve the heat dissipation effect and prolong the service life of the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a liquid cooling plate assembly, a liquid cooling and heat dissipation battery module and a battery pack. Background Art

[0002] Nowadays, the development of domestic new energy is becoming more and more mature, and energy storage products from various companies are gradually coming out. Under the background that the thermal management problems of air-cooled products are gradually exposed, liquid-cooled products are promoted to develop. However, the liquid-cooled products on the market are similar, and the design of the core technology liquid-cooling plate is also very different. Although the cooling effect of the flat liquid-cooling plate is better than that of the air-cooled product, it has not achieved the optimal state of liquid-cooling thermal management. Moreover, the battery cell fixation of the flat liquid-cooling plate has always been criticized, and the side battery cells cannot be completely fixed, and only glue can be applied to the bottom. Utility Model Content

[0003] The main purpose of the utility model is to provide a liquid cooling plate assembly, aiming to improve the heat dissipation effect and increase the service life of the battery core.

[0004] To achieve the above-mentioned purpose, the liquid cooling plate assembly proposed by the utility model comprises:

[0005] A first liquid cooling plate extending along a first direction;

[0006] A second liquid cooling plate, the second liquid cooling plate is extended along the second direction, a plurality of the second liquid cooling plates are provided, and the plurality of second liquid cooling plates are spaced apart along the first direction on the same side plate surface of the first liquid cooling plate, and two adjacent second liquid cooling plates and the first liquid cooling plate are surrounded to form a receiving space for placing battery cells;

[0007] Wherein, the first direction and the second direction are arranged to intersect.

[0008] In one embodiment, the first liquid cooling plate includes a plurality of first liquid cooling components spliced ​​along the first direction, and two adjacent second liquid cooling plates are spaced apart along the first direction on the same side plate surface of the first liquid cooling components.

[0009] In one embodiment, the second liquid cooling plate is perpendicular to the first liquid cooling plate.

[0010] In one embodiment, a water inlet and a water outlet are respectively provided at two ends of the first liquid cooling plate along the first direction, and each of the second liquid cooling plates is provided with a connection port communicating with the first liquid cooling plate.

[0011] In one embodiment, a connection between the first liquid cooling plate and the second liquid cooling plate is recessed to form a groove.

[0012] In one embodiment, the groove includes a first groove provided on the first liquid cooling plate, and a second groove provided on the second liquid cooling plate, and the first groove is communicated with the second groove.

[0013] In one embodiment, the cross-sectional shape of the first groove and the second groove is a quadrilateral.

[0014] The utility model also provides a liquid-cooled heat dissipation battery module, comprising the above-mentioned liquid cooling plate assembly and a battery cell; a plurality of the battery cells are respectively arranged in the accommodating space.

[0015] In one embodiment, a distance between two adjacent second liquid cooling plates is greater than or equal to a width of the battery cell.

[0016] The utility model also proposes a battery pack, comprising the above-mentioned liquid-cooled heat dissipation battery module and a shell; the liquid-cooled heat dissipation battery module is arranged in the shell.

[0017] The utility model discloses a liquid cooling plate assembly including a first liquid cooling plate and a second liquid cooling plate, wherein the number of the second liquid cooling plates is multiple. Two adjacent second liquid cooling plates are mounted on the first liquid cooling plate in cooperation, forming a connection between the two second liquid cooling plates and the first liquid cooling plate, and also realizing the pre-positioning of the second liquid cooling plate and the first liquid cooling plate. The battery cell is accommodated in the accommodation space formed by the first liquid cooling plate and the two adjacent second liquid cooling plates, thereby improving the integration of the battery cell and the first liquid cooling plate and the second liquid cooling plate. The heat generated when the battery cell is working is directly conducted to the first liquid cooling plate and / or the second liquid cooling plate, thereby improving the heat dissipation of the battery cell. In this scheme, the first liquid cooling plate and the second liquid cooling plate are arranged to intersect with each other, and the side of the intersecting distributed liquid cooling plate increases the contact area with the battery cell. This large-area contact can make the cooling rate of the battery cell faster after the coolant flows through the side of the second liquid cooling plate, and the bottom surface of the battery cell is arranged on the first liquid cooling plate, which can also dissipate heat. Therefore, heat can be dissipated simultaneously through the first liquid cooling plate and the second liquid cooling plate, which greatly improves the heat dissipation effect. Therefore, the cooling effect is greatly improved compared with the planar liquid cooling plate in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of an embodiment of a liquid cooling plate assembly of the utility model;

[0020] Figure 2 This is a structural schematic diagram of another embodiment of the liquid cooling plate assembly of the utility model.

[0021] Description of Figure Numbers:

[0022] Label name Label name 10 First liquid cooling plate 11 First liquid cooling element 12 Water Inlet 13 Water outlet 20 Second liquid cooling plate 30 Grooves

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] The utility model provides a liquid cooling plate assembly.

[0028] Reference Figure 1-2 In one embodiment of the present utility model, the liquid cooling plate assembly includes:

[0029] A first liquid cooling plate extending along a first direction;

[0030] A second liquid cooling plate, the second liquid cooling plate is extended along the second direction, a plurality of the second liquid cooling plates are provided, and the plurality of second liquid cooling plates are spaced apart along the first direction on the same side plate surface of the first liquid cooling plate, and two adjacent second liquid cooling plates and the first liquid cooling plate are surrounded to form a receiving space for placing battery cells;

[0031] Wherein, the first direction and the second direction are arranged to intersect.

[0032] A liquid cooling plate assembly disclosed in the utility model includes a first liquid cooling plate 10 and a second liquid cooling plate 20, and the number of the second liquid cooling plates 20 is multiple. Two adjacent second liquid cooling plates 20 are cooperatively installed on the first liquid cooling plate 10, forming a connection between the two second liquid cooling plates 20 and the first liquid cooling plate 10, and can also realize the pre-positioning of the second liquid cooling plate 20 and the first liquid cooling plate 10. The battery cell is accommodated in the accommodation space enclosed by the first liquid cooling plate 10 and the two adjacent second liquid cooling plates 20, which improves the integration of the battery cell and the first liquid cooling plate 10 and the second liquid cooling plate 20. The heat generated by the battery cell during operation is directly conducted to the first liquid cooling plate 10 and / or the second liquid cooling plate 20, thereby improving the heat dissipation of the battery cell. In this solution, the first liquid cooling plate 10 and the second liquid cooling plate 20 are arranged to intersect, and the side of the intersecting distributed liquid cooling plate increases the contact area with the battery cell. This large area contact can make the cooling rate of the battery cell faster after the coolant flows through the side of the second liquid cooling plate 20, and the bottom of the battery cell is arranged on the first liquid cooling plate 10 to also dissipate heat. Therefore, the heat can be dissipated by the first liquid cooling plate 10 and the second liquid cooling plate 20 at the same time, which greatly improves the heat dissipation effect, so the cooling effect is greatly improved compared with the plane liquid cooling plate of the prior art. In this embodiment, the thickness of the side of the first liquid cooling plate 10 and the second liquid cooling plate 20 can be designed taking into account the width of the battery cell and the length required for the application to be installed on the box of the air-cooled product. This ensures that a sufficient number of battery cells can be installed, and can also fit the length of the box on the air-cooled product, and reserve an appropriate position to install the product, which not only ensures the cooling effect of the coolant but also ensures that the flow rate of the coolant can reach the expected value. This solution can better improve the heat dissipation effect and increase the service life of the battery cell. It is understandable that, in this embodiment, the first direction is the length direction of the first liquid cooling plate 10, and the second direction is the length direction of the second liquid cooling plate 20. It is understandable that the spacing between the accommodating spaces is ≥ the height of the battery cell.

[0033] Reference Figure 1-2 In one embodiment of the utility model, the first liquid cooling plate includes a plurality of first liquid cooling parts spliced ​​along the first direction, and two adjacent second liquid cooling plates are arranged on the same side plate surface of the first liquid cooling parts at intervals along the first direction.

[0034] The first liquid cooling plate 10 includes a plurality of first liquid cooling parts 11. Two adjacent second liquid cooling plates 20 are mounted on the first liquid cooling part 11, and each second liquid cooling plate 20 corresponds to and is connected to the first liquid cooling part 11. Therefore, the installation position between the first liquid cooling part 11 and the second liquid cooling plate 20 can be adjusted according to the size of the battery cell, and the length required for installation on the air-cooled product can be designed, so that a sufficient number of battery cells can be installed, and the length of the box on the air-cooled product can also be fitted, and an appropriate position is reserved for installing the product, which not only ensures the cooling effect of the coolant but also ensures that the flow rate of the coolant can reach the expected value. It can be understood that the shape of the first liquid cooling part 11 and the second liquid cooling plate 20 is rectangular, and the length of the first liquid cooling part 11 can also be consistent with the length of the second liquid cooling plate 20 and the battery cell, and the width can also correspond to the width of the battery cell and the distance between two adjacent second liquid cooling plates 20.

[0035] Reference Figure 1-2 In one embodiment of the present invention, the second liquid cooling plate is perpendicular to the first liquid cooling plate.

[0036] The side of this vertically distributed liquid cooling plate assembly can achieve large-area contact with the battery cell. It can be understood that the side and bottom of the battery cell can be in contact with the first liquid cooling plate 10 and the second liquid cooling plate 20 respectively. Therefore, after the coolant flows through the side of the first liquid cooling plate 10 and the second liquid cooling plate 20, the battery cell can be cooled at a faster rate. In addition, heat can also be dissipated simultaneously with the bottom of the battery cell, so the cooling effect is greatly improved compared with the flat liquid cooling plate.

[0037] Reference Figure 1-2 In one embodiment of the utility model, a water inlet and a water outlet are respectively provided at two ends of the first liquid cooling plate along the first direction, and each of the second liquid cooling plates is provided with a connection port communicating with the first liquid cooling plate.

[0038] The first liquid cooling plate 10 is provided with a water inlet 12 and a water outlet 13 on the left and right sides, respectively. Specifically, the water inlet 12 and each connecting port are connected in sequence with the water outlet 13, wherein the liquid channel of the first liquid cooling plate 11 includes a plurality of first flow channels parallel to the first direction, and the liquid channel of the second liquid cooling plate 20 includes a plurality of second flow channels parallel to the second direction, and the plurality of first flow channels are all connected with the water inlet 12 and the water outlet 13, and the plurality of second flow channels are all connected with the plurality of connecting ports, and are all used for the circulation of cooling liquid. The cooling liquid flows from the first liquid cooling plate 10 through the water inlet 12, through each first flow channel in sequence, and then through the second flow channel, and so on, until the cooling liquid fills the entire liquid cooling plate assembly. In this way, the side and bottom surfaces of the battery cell can be better cooled.

[0039] Reference Figure 1-2In one embodiment of the present invention, a connection between the first liquid cooling plate and the second liquid cooling plate is recessed to form a groove.

[0040] A groove structure is designed at the connection between the first liquid cooling plate 10 and the second liquid cooling plate 20. The groove 30 can reduce the flow resistance of the coolant and increase the flow rate, thereby increasing the cooling effect.

[0041] Reference Figure 1-2 In one embodiment of the utility model, the groove includes a first groove provided on the first liquid cooling plate, and a second groove provided on the second liquid cooling plate, and the first groove is connected to the second groove.

[0042] Specifically, the groove 30 includes a first groove provided in the first liquid cooling plate 10 and a second groove provided in the second liquid cooling plate 20. The first groove and the second groove can reduce the resistance of the coolant flowing through the first liquid cooling plate 10 and the second liquid cooling plate 20, increase the flow rate, and thus increase the cooling effect.

[0043] Reference Figure 1-2 In one embodiment of the present invention, the cross-sectional shape of the first groove and the second groove is a quadrilateral.

[0044] The cross-sectional shape of the first groove and the second groove is a quadrilateral, which is convenient for processing and facilitates the coolant to flow through the first liquid cooling plate 10 and the second liquid cooling plate 20 better.

[0045] The utility model also provides a liquid-cooled heat dissipation battery module, comprising the above-mentioned liquid cooling plate assembly and a battery cell; a plurality of the battery cells are respectively arranged in the accommodating space.

[0046] It is understandable that the spacing between the accommodating spaces is ≥ the height of the battery cell. Therefore, the size of the accommodating space can be adjusted according to the size of the battery cell, and the length required for installation on the air-cooled product can be designed. This ensures that a sufficient number of battery cells can be installed, and can also fit the length of the box on the air-cooled product, reserving an appropriate position to install the product, which not only ensures the cooling effect of the coolant but also ensures that the flow rate of the coolant can reach the expected value. The specific structure of the liquid cooling plate assembly refers to the above-mentioned embodiment. Since the liquid cooling plate assembly adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0047] Reference Figure 1-2 In one embodiment of the present invention, the distance between two adjacent second liquid cooling plates 20 is greater than or equal to the width of the battery cell.

[0048] The distance between two adjacent second liquid cooling plates 20 reserves a suitable position for installing the battery cells, which not only ensures the cooling effect of the coolant but also ensures that the flow rate of the coolant can reach the expected value.

[0049] The utility model also proposes a battery pack, including the above-mentioned liquid-cooled heat dissipation battery module, and a shell; the liquid-cooled heat dissipation battery module is arranged in the shell. Among them, the liquid-cooled heat dissipation battery module includes the above-mentioned liquid cooling plate assembly, and battery cells; a plurality of the battery cells are respectively arranged in the accommodating space. The specific structure of the liquid cooling plate assembly refers to the above-mentioned embodiment. Since the liquid cooling plate assembly adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0050] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A liquid cooling plate assembly, characterized in that: include: A first liquid cooling plate extending along a first direction; A second liquid cooling plate, the second liquid cooling plate is extended along the second direction, a plurality of the second liquid cooling plates are provided, and the plurality of second liquid cooling plates are spaced apart along the first direction on the same side plate surface of the first liquid cooling plate, and two adjacent second liquid cooling plates and the first liquid cooling plate are surrounded to form a receiving space for placing battery cells; Wherein, the first direction and the second direction are arranged to intersect.

2. The liquid cooling plate assembly according to claim 1, characterized in that: The first liquid cooling plate includes a plurality of first liquid cooling components spliced ​​along the first direction, and two adjacent second liquid cooling plates are arranged on the same side plate surface of the first liquid cooling components at intervals along the first direction.

3. The liquid cooling plate assembly according to claim 1, characterized in that: The second liquid cooling plate is perpendicular to the first liquid cooling plate.

4. The liquid cooling plate assembly according to claim 1, characterized in that: The first liquid cooling plate is provided with a water inlet and a water outlet at two ends along the first direction, respectively, and each of the second liquid cooling plates is provided with a connection port communicating with the first liquid cooling plate.

5. The liquid cooling plate assembly according to claim 1, characterized in that: A connection between the first liquid cooling plate and the second liquid cooling plate is recessed to form a groove.

6. The liquid cooling plate assembly according to claim 5, characterized in that: The groove includes a first groove provided on the first liquid cooling plate, and a second groove provided on the second liquid cooling plate, and the first groove is communicated with the second groove.

7. The liquid cooling plate assembly according to claim 6, characterized in that: The cross-sectional shapes of the first groove and the second groove are quadrilateral.

8. A liquid-cooled heat dissipation battery module, characterized in that: Comprising a liquid cooling plate assembly as claimed in any one of claims 1 to 7, and a battery cell; The plurality of battery cells are respectively arranged in the accommodating space.

9. The liquid-cooled heat dissipation battery module according to claim 8, characterized in that: The distance between two adjacent second liquid cooling plates is greater than or equal to the width of the battery core.

10. A battery pack, comprising a housing, characterized in that: It also includes a liquid-cooled heat dissipation battery module as described in any one of claims 8 to 9, wherein the liquid-cooled heat dissipation battery module is arranged in the shell.

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