Liquid cooling plate, liquid cooling module and battery pack

Abstract

The utility model provides a liquid cooling plate, a liquid cooling module and a battery pack, and the liquid cooling plate comprises a liquid cooling plate main body which is provided with a liquid guide groove, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively communicated with the liquid guide groove at the same side of the liquid guide groove; the first separation main body is arranged in the liquid guide groove to separate the liquid guide groove into a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is communicated with the liquid inlet, the liquid outlet groove is communicated with the liquid outlet, and reinforcing ribs are arranged in the liquid inlet groove and / or the liquid outlet groove. According to the liquid cooling plate, on one hand, the liquid guide groove is divided into the liquid inlet groove and the liquid outlet groove by the first separation main body, so that the flow of cooling liquid in the liquid inlet groove and the liquid outlet groove achieves a flow division effect compared with the flow of the cooling liquid in the whole liquid guide groove when the liquid guide groove is not separated, thereby improving the flow uniformity of the cooling liquid and improving the temperature uniformity of the liquid cooling plate; and the structural strength of the liquid cooling plate is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and specifically to a liquid cooling plate, a liquid cooling module and a battery pack. Background Art

[0002] With the rapid development of new energy technology, batteries have been widely used in various new energy vehicles and energy storage power stations. Batteries will generate heat during use, causing the battery temperature to rise, thereby affecting battery performance and even causing risks such as spontaneous combustion and explosion.

[0003] In the prior art, the battery is generally cooled by injecting coolant into the flow channel of the liquid cooling plate. The coolant is injected into the flow channel from the liquid inlet at one end of the flow channel, and then discharged from the liquid outlet at the other end of the flow channel. In this method, as the coolant gradually flows in the flow channel, the flow channel resistance will become greater and greater, resulting in increasingly poor uniformity of the coolant flow, thereby resulting in poor temperature uniformity of the liquid cooling plate. Utility Model Content

[0004] The present application mainly provides a liquid cooling plate, a liquid cooling module and a battery pack, which can improve the temperature uniformity of the liquid cooling plate.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a liquid cooling plate, the liquid cooling plate comprising: a liquid cooling plate body, formed with a liquid guide groove, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are respectively connected to the liquid guide groove on the same side of the liquid guide groove; a first partition body, arranged in the liquid guide groove to separate the liquid guide groove into a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is connected to the liquid inlet, the liquid outlet groove is connected to the liquid outlet, and reinforcing ribs are provided in the liquid inlet groove and / or the liquid outlet groove.

[0006] In a specific embodiment, the liquid inlet groove and the liquid outlet groove are respectively extended along a first direction, and the liquid inlet groove and the liquid outlet groove are arranged side by side along a second direction, and the first direction and the second direction are arranged crosswise.

[0007] In a specific embodiment, the reinforcing rib is provided in the liquid inlet groove, and the height of the reinforcing rib is less than or equal to half the depth of the liquid inlet groove; and / or the reinforcing rib is provided in the liquid outlet groove, and the height of the reinforcing rib is less than or equal to half the depth of the liquid outlet groove.

[0008] In a specific embodiment, the reinforcing rib is inclined relative to the first direction; and or the first partition body is extended along the first direction, the reinforcing ribs are respectively provided in the liquid inlet groove and the liquid outlet groove, and the reinforcing ribs in the liquid inlet groove and the reinforcing ribs in the liquid outlet groove are symmetrically arranged relative to the first partition body.

[0009] In a specific embodiment, a second partition body is further provided in the liquid inlet groove and / or the liquid outlet groove to separate the liquid inlet groove into a first sub-liquid inlet groove and a second sub-liquid inlet groove and / or to separate the liquid outlet groove into a first sub-liquid outlet groove and a second sub-liquid outlet groove.

[0010] In a specific embodiment, the second partition body is provided in the liquid inlet groove, and the first sub-liquid inlet groove and / or the second sub-liquid inlet groove are provided with a first drainage protrusion; and / or the second partition body is provided in the liquid outlet groove, and the first sub-liquid outlet groove and / or the second sub-liquid outlet groove are provided with a second drainage protrusion.

[0011] In a specific embodiment, the liquid cooling plate body is further formed with a drainage groove, and the drainage groove is respectively connected with the liquid inlet groove and the liquid outlet groove on one side of the liquid inlet groove and the liquid outlet groove facing the first direction.

[0012] In a specific embodiment, a third drainage protrusion is provided in the drainage groove, and the drainage groove is defined to form a first central axis and a second central axis that are perpendicular to each other. The third drainage protrusion is arranged at the intersection of the first central axis and the second central axis, and the length of the third drainage protrusion in the second direction is one quarter to two thirds of the length of the drainage groove in the second direction; or a third drainage protrusion and a plurality of fourth drainage protrusions are provided in the drainage groove, and the drainage groove is defined to form a first central axis and a second central axis that are perpendicular to each other, and the third drainage protrusion is arranged at the intersection of the first central axis and the second central axis, and the length of the third drainage protrusion in the second direction is one quarter to two thirds of the length of the drainage groove in the second direction, and the plurality of fourth drainage protrusions are respectively arranged on opposite sides of the third drainage protrusion in the second direction.

[0013] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a liquid cooling module, the liquid cooling module includes a cover plate and the liquid cooling plate, and the cover plate is stacked on the liquid cooling plate body.

[0014] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a battery pack, the battery pack includes a battery module and the liquid cooling module, and the battery module is arranged on the liquid cooling plate body and / or the cover plate.

[0015] The beneficial effects of the present application are as follows: Different from the prior art, the liquid cooling plate provided by the embodiment of the present application includes: a liquid cooling plate body, which is formed with a liquid guiding groove, a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are respectively connected to the liquid guiding groove on the same side of the liquid guiding groove; a first partition body, which is arranged in the liquid guiding groove to separate the liquid guiding groove into a liquid inlet groove and a liquid outlet groove, wherein the liquid inlet groove is connected to the liquid inlet, and the liquid outlet groove is connected to the liquid outlet, and reinforcing ribs are arranged in the liquid inlet groove and / or the liquid outlet groove. On the one hand, without reducing the area of ​​the liquid guiding groove, that is, without reducing the heat dissipation area of ​​the liquid cooling plate, the first partition body separates the liquid guiding groove into a liquid inlet groove and a liquid outlet groove, so that the flow of the coolant in the liquid inlet groove and the liquid outlet groove, relative to the flow in the entire liquid guiding groove when not separated, achieves a diversion effect, thereby improving the uniformity of the flow of the coolant and improving the temperature uniformity of the liquid cooling plate. On the other hand, the structural strength of the liquid cooling plate is improved by the provision of the reinforcing ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the liquid cooling plate implementation scheme provided by the present application;

[0018] Figure 2 yes Figure 1 Schematic diagram of the regional location of the liquid cooling plate;

[0019] Figure 3 It is a schematic diagram of the three-dimensional decomposition structure of the liquid cooling module implementation scheme provided in this application. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is particularly noted that the following implementation methods are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following implementation methods are only some implementation methods of the present application rather than all implementation methods. All other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] The terms "first", "second" and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, and the manner is such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications in the implementation mode of this application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. The manner, such as a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0022] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] See also Figure 1 , Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of a liquid cooling plate 10 provided in the present application. The liquid cooling plate 10 in this embodiment includes a liquid cooling plate body 11 and a first partition body 12 .

[0024] Among them, the liquid cooling plate body 11 is formed with a liquid guide groove 101, a liquid inlet 102 and a liquid outlet 103. The liquid inlet 102 and the liquid outlet 103 are respectively connected to the liquid guide groove 101 on the same side of the liquid guide groove 101. In actual application, the coolant is injected into the liquid guide groove 101 from the liquid inlet 102, and then discharged from the liquid outlet 103, thereby completing the cooling process.

[0025] Please also read Figure 1 and Figure 2 , Figure 2 yes Figure 1Schematic diagram of the regional position of the liquid cold plate 10, the first partition body 12 is arranged in the liquid guide groove 101 to separate the liquid guide groove 101 into a liquid inlet groove 1011 and a liquid outlet groove 1012, the liquid inlet groove 1011 is connected to the liquid inlet port 102, and the liquid outlet groove 1012 is connected to the liquid outlet port 103, so that the coolant is injected from the liquid inlet port 102 into the liquid inlet groove 1011, and then flows from the liquid inlet groove 1011 into the liquid outlet groove 1012, and finally discharged from the liquid outlet port 103. In this way, without reducing the area of ​​the liquid guide groove 101, that is, without reducing the heat dissipation area of ​​the liquid cooling plate 10, the first partition body 12 divides the liquid guide groove 101 into a liquid inlet groove 1011 and a liquid outlet groove 1012, so that the flow of the coolant in the liquid inlet groove 1011 and the liquid outlet groove 1012 is compared with the flow in the entire liquid guide groove 101 when not separated, thereby achieving a diversion effect, thereby improving the uniformity of the coolant flow and improving the temperature uniformity of the liquid cooling plate 10.

[0026] The liquid inlet groove 1011 and the liquid outlet groove 1012 are respectively arranged along the Figure 2 The first direction A shown in FIG. 1 is extended, and the liquid inlet groove 1011 and the liquid outlet groove 1012 are arranged along the first direction A shown in FIG. Figure 2 The second directions B shown are arranged side by side, and the first direction A and the second direction B are arranged crosswise. In this embodiment, the first direction A and the second direction B are perpendicular to each other.

[0027] Furthermore, in the present embodiment, a second partition body 13 is provided in the liquid inlet groove 1011 and / or the liquid outlet groove 1012 to separate the liquid inlet groove 1011 into a first sub-liquid inlet groove 101a and a second sub-liquid inlet groove 101b and / or to separate the liquid outlet groove 1012 into a first sub-liquid outlet groove 101c and a second sub-liquid outlet groove 101d, so that the coolant can be diverted in the liquid inlet groove 1011 and / or the liquid outlet groove 1012, and the uniformity of the coolant flow is further improved. In the present embodiment, a second partition body 13 is provided in both the liquid inlet groove 1011 and the liquid outlet groove 1012, and the second partition body 13 is extended along the first direction A.

[0028] It can be understood that the length direction of the above-mentioned first sub-liquid inlet groove 101a, the second sub-liquid inlet groove 101b, the first sub-liquid outlet groove 101c and the second sub-liquid outlet groove 101d is the first direction A, and the width direction of the first sub-liquid inlet groove 101a, the second sub-liquid inlet groove 101b, the first sub-liquid outlet groove 101c and the second sub-liquid outlet groove 101d is the second direction B. The lengths of the first sub-liquid inlet groove 101a, the second sub-liquid inlet groove 101b, the first sub-liquid outlet groove 101c and the second sub-liquid outlet groove 101d are the same, and the widths of the first sub-liquid inlet groove 101a, the second sub-liquid inlet groove 101b, the first sub-liquid outlet groove 101c and the second sub-liquid outlet groove 101d can be determined according to the position of the second partition body 13 in actual applications, and there is no limitation on this.

[0029] Among them, a second partition body 13 is provided in the liquid inlet groove 1011, and a first drainage protrusion 14 is provided in the first sub-liquid inlet groove 101a and / or the second sub-liquid inlet groove 101b, so that the cooling liquid can achieve a diversion effect in the first sub-liquid inlet groove 101a and / or the second sub-liquid inlet groove 101b; and / or a second partition body 13 is provided in the liquid outlet groove 1012, and a second drainage protrusion 14a is provided in the first sub-liquid outlet groove 101c and / or the second sub-liquid outlet groove 101d, so that the cooling liquid can achieve a diversion effect in the first sub-liquid outlet groove 101c and / or the second sub-liquid outlet groove 101d. In this embodiment, the first sub-liquid inlet groove 101a and the second sub-liquid inlet groove 101b are both provided with a first drainage protrusion 14, and the first sub-liquid outlet groove 101c and the second sub-liquid outlet groove 101d are both provided with a second drainage protrusion 14a.

[0030] Furthermore, the liquid cooling plate body 11 in the present embodiment is also formed with a drainage groove 104, which is connected to the liquid inlet groove 1011 and the liquid outlet groove 1012 on the side facing the first direction A, so that the coolant is injected into the liquid inlet groove 1011 from the liquid inlet port 102, and then flows from the liquid inlet groove 1011 to the drainage groove 104, and then flows from the drainage groove 104 to the liquid outlet groove 1012, and finally discharged from the liquid outlet port 103 to complete the cooling process.

[0031] Among them, a third drainage protrusion 15 is provided in the drainage groove 104, and the drainage groove 104 is defined by a first central axis I and a second central axis II which are perpendicular to each other. The third drainage protrusion 15 is arranged at the intersection of the first central axis I and the second central axis II. The length L1 of the third drainage protrusion 15 in the second direction B is one quarter to two thirds of the length L2 of the drainage groove 104 in the second direction B, that is, (1 / 4)L2≤L1≤(2 / 3)L2.

[0032] Optionally, a plurality of fourth drainage protrusions 16 are further provided in the drainage groove 104 , and the plurality of fourth drainage protrusions 16 are respectively arranged on two opposite sides of the third drainage protrusion 15 in the second direction B.

[0033] It can be understood that the number of the fourth drainage protrusions 16 can be set according to actual needs without limitation. Similarly, the length of the fourth drainage protrusions 16 in the second direction B can also be set according to actual needs without limitation.

[0034] like Figure 1 As shown, in this embodiment, reinforcing ribs 17 are provided in the liquid inlet groove 1011 and / or the liquid outlet groove 1012 to improve the structural strength of the liquid cooling plate 10 .

[0035] The reinforcing ribs 17 are arranged to be inclined relative to the first direction A, so as to reduce the flow resistance of the reinforcing ribs 17 to the coolant.

[0036] Optionally, the first partition body 12 is extended along the first direction A, and reinforcing ribs 17 are respectively provided in the liquid inlet groove 1011 and the liquid outlet groove 1012 . The reinforcing ribs 17 in the liquid inlet groove 1011 and the reinforcing ribs 17 in the liquid outlet groove 1012 are symmetrically arranged relative to the first partition body 12 .

[0037] Optionally, a reinforcing rib 17 is provided in the liquid inlet groove 1011, and the height of the reinforcing rib 17 is less than or equal to half the depth of the liquid inlet groove 1011; and / or a reinforcing rib 17 is provided in the liquid outlet groove 1012, and the height of the reinforcing rib 17 is less than or equal to half the depth of the liquid outlet groove 1012, so that the reinforcing rib 17 will not hinder the flow of coolant in the liquid inlet groove 1011 and / or the liquid outlet groove 1012 while improving the structural strength of the liquid cooling plate 10.

[0038] It can be understood that in practical applications, the specific structural form of the reinforcing rib 17 can be set according to actual needs, and there is no limitation on this. For example, in this embodiment, the reinforcing rib 17 is in the structural form of a strip block.

[0039] See also Figure 3 , Figure 3 It is a schematic diagram of the three-dimensional decomposition structure of an embodiment of a liquid cooling module 20 provided in the present application. The liquid cooling module 20 in this embodiment includes a cover plate 21 and the liquid cooling plate 10 in the above embodiment. The cover plate 21 is stacked on the liquid cooling plate body 11.

[0040] The embodiment of the present application also provides a battery pack, which includes a battery module and the liquid cooling module 20 in the above embodiment. The battery module is arranged on the liquid cooling plate body 11 and / or the cover plate 21, so that the battery module is cooled during the process of the coolant being injected from the liquid inlet 102 and discharged from the liquid outlet 103.

[0041] Different from the prior art, the liquid cooling plate provided in the embodiment of the present application includes: a liquid cooling plate body, which is formed with a liquid guiding groove, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are respectively connected to the liquid guiding groove on the same side of the liquid guiding groove; a first partition body, which is arranged in the liquid guiding groove to separate the liquid guiding groove into a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is connected to the liquid inlet, and the liquid outlet groove is connected to the liquid outlet, and reinforcing ribs are arranged in the liquid inlet groove and / or the liquid outlet groove. On the one hand, without reducing the area of ​​the liquid guiding groove, that is, without reducing the heat dissipation area of ​​the liquid cooling plate, the first partition body separates the liquid guiding groove into a liquid inlet groove and a liquid outlet groove, so that the flow of the cooling liquid in the liquid inlet groove and the liquid outlet groove, relative to the flow in the entire liquid guiding groove when not separated, achieves a diversion effect, thereby improving the uniformity of the cooling liquid flow and improving the temperature uniformity of the liquid cooling plate. On the other hand, the structural strength of the liquid cooling plate is improved by the provision of the reinforcing ribs.

[0042] The above description is only part of the implementation methods of the present application, and does not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A liquid cooling plate, characterized in that: The liquid cooling plate comprises: The liquid cooling plate body is formed with a liquid guide groove, a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are respectively connected to the liquid guide groove on the same side of the liquid guide groove; The first partition body is arranged in the liquid guiding groove to separate the liquid guiding groove into a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is connected with the liquid inlet, the liquid outlet groove is connected with the liquid outlet, and reinforcing ribs are arranged in the liquid inlet groove and / or the liquid outlet groove.

2. The liquid cooling plate according to claim 1, characterized in that: The liquid inlet groove and the liquid outlet groove are respectively extended along a first direction, and the liquid inlet groove and the liquid outlet groove are arranged side by side along a second direction, and the first direction and the second direction are arranged to intersect.

3. The liquid cooling plate according to claim 1, characterized in that: The reinforcing rib is provided in the liquid inlet groove, and the height of the reinforcing rib is less than or equal to half the depth of the liquid inlet groove; and / or The reinforcing rib is arranged in the liquid outlet groove, and the height of the reinforcing rib is less than or equal to half of the depth of the liquid outlet groove.

4. The liquid cooling plate according to claim 2, characterized in that: The reinforcing ribs are arranged obliquely relative to the first direction; and or The first partition body is extended along the first direction, the reinforcing ribs are respectively arranged in the liquid inlet groove and the liquid outlet groove, and the reinforcing ribs in the liquid inlet groove and the reinforcing ribs in the liquid outlet groove are symmetrically arranged relative to the first partition body.

5. The liquid cooling plate according to claim 1, characterized in that: A second partition body is also provided in the liquid inlet trough and / or the liquid outlet trough to separate the liquid inlet trough into a first sub-liquid inlet trough and a second sub-liquid inlet trough and / or to separate the liquid outlet trough into a first sub-liquid outlet trough and a second sub-liquid outlet trough.

6. The liquid cooling plate according to claim 5, characterized in that: The second partition body is provided in the liquid inlet groove, and the first sub-liquid inlet groove and / or the second sub-liquid inlet groove are provided with a first drainage protrusion; and / or The second partition body is arranged in the liquid outlet groove, and the second drainage protrusion is arranged in the first sub-liquid outlet groove and / or the second sub-liquid outlet groove.

7. The liquid cooling plate according to claim 2, characterized in that: The liquid cooling plate body is further formed with a drainage groove, and the drainage groove is respectively connected with the liquid inlet groove and the liquid outlet groove on one side of the liquid inlet groove and the liquid outlet groove facing the first direction.

8. The liquid cooling plate according to claim 7, characterized in that: A third drainage protrusion is provided in the drainage groove, the drainage groove is defined by a first central axis and a second central axis which are perpendicular to each other, the third drainage protrusion is arranged at the intersection of the first central axis and the second central axis, and the length of the third drainage protrusion in the second direction is one quarter to two thirds of the length of the drainage groove in the second direction; or A third drainage protrusion and a plurality of fourth drainage protrusions are provided in the drainage groove. The drainage groove is defined by a first central axis and a second central axis which are perpendicular to each other. The third drainage protrusion is arranged at the intersection of the first central axis and the second central axis. The length of the third drainage protrusion in the second direction is one quarter to two thirds of the length of the drainage groove in the second direction. The plurality of fourth drainage protrusions are respectively arranged on opposite sides of the third drainage protrusion in the second direction.

9. A liquid cooling module, characterized in that: The liquid cooling module comprises a cover plate and the liquid cooling plate according to any one of claims 1 to 8, wherein the cover plate is stacked on the liquid cooling plate body.

10. A battery pack, characterized in that: The battery pack includes a battery module and the liquid cooling module according to claim 9, and the battery module is arranged on the liquid cooling plate body and / or the cover plate.

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