Liquid cooling plate fixing structure and liquid cooling plate

Abstract

The utility model relates to the technical field of power batteries, in particular to a liquid cooling plate fixing structure and a liquid cooling plate, and the liquid cooling plate fixing structure comprises a transition part, a bending part and a mounting part which are sequentially connected with a liquid cooling plate body, the bending part is bent downwards in the vertical direction, and the bottom of the bending part is located below the liquid cooling plate body. The joints of the fixing points and the liquid cooling plate body are changed into the arc-shaped structures which are bent downwards, so that the problem of fracture caused by stress concentration is avoided. The utility model has the advantages of simple design and low cost, and is easy to manufacture. The structure can absorb the displacement of the upper-layer liquid cooling plate of the double-layer module battery pack in each direction, especially the problem of mounting point fracture failure caused by vibration in the vertical direction. Therefore, the technical problem of fracture failure of the liquid cooling plate at the joint of the fixed points can be solved. And the problem of fracture caused by stress concentration is avoided by adopting the R-angle or semicircular crack arrest groove. The periphery of the liquid cooling plate is uniformly arranged, so that the displacement influence in each direction can be better absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a liquid cooling plate fixing structure and a liquid cooling plate. Background Art

[0002] With the rapid development of new energy vehicles and the support of national policies, more and more people are willing to purchase new energy vehicles. Due to their application requirements, some models (such as electric trucks, off-road vehicles, and RVs) require power battery packs with higher energy, which is why double-layer module battery packs have emerged.

[0003] A double-layer module battery pack typically consists of two liquid cooling plates, one above the other. The upper plate is typically mounted to the upper module's mounting bracket via mounting points. Under harsh operating conditions, the mounting points are susceptible to fracture failure when the vehicle vibrates vertically. Because conventional mounting points are flush with the liquid cooling plate, this poses a risk of fracture failure. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid cooling plate fixing structure and a liquid cooling plate, which can solve the technical problem of fracture failure at the connection point of the liquid cooling plate.

[0005] To achieve the above-mentioned purpose, the present invention designs a liquid cooling plate fixing structure, comprising a transition portion, a bending portion, and a mounting portion connected in sequence to the liquid cooling plate body; the bending portion is bent downward in a vertical direction, and the bottom of the bending portion is located below the liquid cooling plate body; the mounting portion is provided with a mounting hole connected to the box body.

[0006] As a preferred solution, the bending portion is "U"-shaped, the bottom of the bending portion is located below both the liquid cooling plate body and the mounting portion, and the connection between the bending portion and the transition portion and the mounting portion is provided with rounded corners.

[0007] As a preferred solution, the bending portion is "S"-shaped, the top of the bending portion is located above the mounting portion, and the connections between the bending portion, the transition portion and the mounting portion are all provided with chamfered corners.

[0008] As a preferred solution, the transition portion is an arc-shaped structure.

[0009] As a preferred solution, the transition portion is an R-angle structure, and both sides of the R-angle structure are smoothly connected to the liquid cooling plate body and the bent portion along the tangential direction respectively.

[0010] As a preferred solution, the transition portion is a semicircular crack arresting groove structure, which extends into the interior of the liquid cooling plate body, is connected to the side of the liquid cooling plate body through a chamfered corner, and is smoothly connected to the bent portion along the tangent direction.

[0011] As a preferred solution, the mounting hole is a waist-shaped hole.

[0012] As a preferred solution, the mounting hole is a circular hole.

[0013] The utility model also designs a liquid cooling plate, which comprises a liquid cooling plate body and the above-mentioned liquid cooling plate fixing structure, wherein the liquid cooling plate fixing structure is connected to the liquid cooling plate body.

[0014] Beneficial effects of the utility model:

[0015] The present invention provides a liquid cooling plate fixing structure and a liquid cooling plate, which converts the connection between the fixing point and the liquid cooling plate body into a downwardly curved structure to avoid fracture problems caused by stress concentration. The present invention has a simple design, low cost, and is easy to manufacture. This structure can absorb the displacement of the upper liquid cooling plate of the double-layer module battery pack in all directions, especially the problem of fracture and failure of the installation point caused by vertical vibration. Therefore, it can solve the technical problem of fracture and failure of the liquid cooling plate at the connection point of the fixing point.

[0016] Use R-angle or semicircular crack grooves to avoid fracture problems caused by stress concentration.

[0017] The liquid cooling plate is designed to be arranged on all sides to better absorb the impact of displacement in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the liquid cooling plate fixing structure in the prior art.

[0019] Figure 2 It is a planar schematic diagram of the liquid cooling plate fixing structure in the prior art.

[0020] Figure 3 This is a three-dimensional schematic diagram of a first embodiment of the liquid cooling plate fixing structure of the present invention.

[0021] Figure 4 This is a three-dimensional schematic diagram of a second embodiment of the liquid cooling plate fixing structure of the present invention.

[0022] Figure 5 This is a three-dimensional schematic diagram of the third embodiment of the liquid cooling plate fixing structure of the present invention.

[0023] Figure 6 This is a three-dimensional schematic diagram of a fourth embodiment of the liquid cooling plate fixing structure of the present invention.

[0024] Figure 7 It is a plan view of the first embodiment of the mounting portion of the present invention.

[0025] Figure 8 It is a plan view of the second embodiment of the mounting portion of the present invention.

[0026] Figure 9 It is a partial three-dimensional schematic diagram of the liquid cooling plate of the present invention.

[0027] Description of reference numerals:

[0028] Liquid cooling plate body 1, liquid cooling plate fixing structure 2, fracture point 7;

[0029] Liquid cooling plate fixing structure 2: transition portion 3, bending portion 4, mounting portion 5, mounting hole 6. DETAILED DESCRIPTION

[0030] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] like Figure 1 、 2 As shown, in the prior art, the upper liquid cooling plate is generally installed on the upper module fixing bracket through a fixing point, which is prone to the risk of fracture and failure when vibrating in the vertical direction. Since the conventional fixing point is flush with the liquid cooling plate, there is a risk of fracture and failure at the connection of the fixing point. Figure 2 The horizontal line in the middle is the fracture point 7, which is prone to fracture lines or indicates that it has already been broken.

[0034] This utility model relates to a liquid cooling plate fixing structure and liquid cooling plate, aiming to solve the problem of the upper liquid cooling plate being easily broken at the mounting point. A double-layer module battery pack typically includes two liquid cooling plates, the upper liquid cooling plate being fixed to the upper module bracket with bolts, while the lower liquid cooling plate is fastened around the edges with flow drill screws or blind rivets and integrated into the bottom of the box.

[0035] The utility model provides a liquid cooling plate fixing structure, comprising a transition portion 3, a bending portion 4, and a mounting portion 5 which are sequentially connected to a liquid cooling plate body 1; the bending portion 4 is bent downward in a vertical direction, and the bottom of the bending portion 4 is located below the liquid cooling plate body 1; the mounting portion 5 is provided with a mounting hole 6 which is connected to a box body.

[0036] The bent portion 4 includes a "U" shape and an "S" shape. The U-shaped bent portion 4 has its bottom located below both the liquid cooling plate body 1 and the mounting portion 5. The connection between the bent portion 4, the transition portion 3, and the mounting portion 5 is chamfered. The S-shaped bent portion 4 has its top located above the mounting portion 5. The connection between the bent portion 4, the transition portion 3, and the mounting portion 5 is chamfered.

[0037] The transition portion 3 is an arc-shaped structure, including an R-angle structure and a semicircular crack arresting groove structure. The transition portion 3 is an R-angle structure, and the two sides of the R-angle structure are smoothly connected to the liquid cooling plate body 1 and the bent portion 4 along the tangential direction. The transition portion 3 is a semicircular crack arresting groove structure, which extends into the interior of the liquid cooling plate body 1. The semicircular crack arresting groove structure is connected to the side of the liquid cooling plate body 1 through a chamfered corner, and the semicircular crack arresting groove structure is smoothly connected to the bent portion 4 along the tangential direction.

[0038] The mounting hole 6 is a waist-shaped hole or a circular hole, which makes the assembly of the battery box more convenient.

[0039] The present invention further provides a liquid cooling plate, comprising a liquid cooling plate body 1 and the above-mentioned liquid cooling plate fixing structure 2 , wherein the liquid cooling plate fixing structure 2 is connected to the liquid cooling plate body 1 .

[0040] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0041] This solution primarily involves designing a mounting point structure for the upper liquid cooling plate in a double-layer modular battery pack. These structures include "U" and "S" shapes. Each structure is further categorized into R-shaped and semicircular arrester grooves, depending on the connection to the liquid cooling plate.

[0042] Example 1, "U" shaped R angle form:

[0043] like Figure 3 As shown, the bottom of the bent portion 4 is located below both the liquid cooling plate body 1 and the mounting portion 5. The bend 4 is rounded at the connection with the transition portion 3 and the mounting portion 5. Both sides of the rounded structure are smoothly connected to the liquid cooling plate body 1 and the bent portion 4 along the tangential direction.

[0044] Example 2, "U" shaped semicircular crack arrest groove form:

[0045] like Figure 4 As shown, the bottom of the bent portion 4 is located below both the liquid cooling plate body 1 and the mounting portion 5. The connection between the bent portion 4, the transition portion 3, and the mounting portion 5 is rounded. A semicircular crack arrest structure extends into the interior of the liquid cooling plate body 1. The semicircular crack arrest structure is connected to the side of the liquid cooling plate body 1 via a rounded corner. The semicircular crack arrest structure is smoothly connected to the bent portion 4 along the tangential direction.

[0046] Example 3, "S" shaped R angle form:

[0047] like Figure 5 As shown, the top of the bent portion 4 is located above the mounting portion 5, and the connection between the bent portion 4, the transition portion 3, and the mounting portion 5 is rounded. The two sides of the R-angle structure are smoothly connected to the liquid cooling plate body 1 and the bent portion 4 along the tangential direction.

[0048] Example 4, "S" shaped semicircular crack arrest groove form:

[0049] like Figure 6 As shown, the top of the bent portion 4 is located above the mounting portion 5, and the connection between the bent portion 4, the transition portion 3, and the mounting portion 5 is rounded. The semicircular crack arrest groove structure extends into the interior of the liquid cooling plate body 1, and the semicircular crack arrest groove structure is connected to the side of the liquid cooling plate body 1 through a rounded corner. The semicircular crack arrest groove structure is smoothly connected to the bent portion 4 along the tangential direction.

[0050] The "U" and "S" shaped structures absorb the displacement caused by vertical vibration in harsh vehicle operating conditions. Each structural form uses rounded corners or semicircular crack arrest grooves at the connection with the liquid cooling plate to effectively prevent stress concentration and fracture failure.

[0051] like Figure 9 The figure is a partial three-dimensional schematic diagram of the liquid cooling plate of the utility model. This structure can be installed around the liquid cooling plate, and the number is designed according to the size of the battery pack and the space inside the battery pack. This structure can also absorb the influence of lateral and longitudinal vibration displacement. The mounting hole can be designed as a round hole or a waist-shaped hole according to the convenience of assembly, such as Figure 7 、 8 shown.

[0052] The utility model has a simple design, low cost, and is easy to manufacture. This structure can absorb the displacement of the upper liquid cooling plate of the double-layer module battery pack in all directions, especially the problem of fracture and failure of the installation point caused by vertical vibration. The installation and fixing point of the upper liquid cooling plate is a "U" or "S" shaped structure; R-angle or semicircular crack arrest grooves are used to avoid fracture problems caused by stress concentration; the design is arranged on all sides of the liquid cooling plate to better absorb the impact of displacement in all directions.

[0053] The above-described embodiments merely represent one embodiment of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A liquid cooling plate fixing structure, characterized in that: The invention comprises a transition portion (3), a bending portion (4), and a mounting portion (5) which are sequentially connected to a liquid cooling plate body (1); the bending portion (4) is bent downward in a vertical direction, and the bottom of the bending portion (4) is located below the liquid cooling plate body (1); and the mounting portion (5) is provided with a mounting hole (6) connected to a box body.

2. The liquid cooling plate fixing structure according to claim 1, characterized in that: The bending portion (4) is U-shaped, and the bottom of the bending portion (4) is located below both the liquid cooling plate body (1) and the mounting portion (5). The connection between the bending portion (4), the transition portion (3) and the mounting portion (5) is provided with rounded corners.

3. The liquid cooling plate fixing structure according to claim 1, characterized in that: The bending portion (4) is S-shaped, the top of the bending portion (4) is located above the mounting portion (5), and the connection between the bending portion (4), the transition portion (3) and the mounting portion (5) is provided with a rounded corner.

4. The liquid cooling plate fixing structure according to claim 1, characterized in that: The transition portion (3) is an arc-shaped structure.

5. The liquid cooling plate fixing structure according to claim 4, characterized in that: The transition portion (3) is an R-angle structure, and both sides of the R-angle structure are smoothly connected to the liquid cooling plate body (1) and the bending portion (4) along the tangent direction.

6. The liquid cooling plate fixing structure according to claim 4, characterized in that: The transition portion (3) is a semicircular crack arresting groove structure, the semicircular crack arresting groove structure extends into the interior of the liquid cooling plate body (1), the semicircular crack arresting groove structure is connected to the side of the liquid cooling plate body (1) through a rounded corner, and the semicircular crack arresting groove structure is smoothly connected to the bent portion (4) along the tangential direction.

7. The liquid cooling plate fixing structure according to claim 1, characterized in that: The mounting hole (6) is a waist-shaped hole.

8. The liquid cooling plate fixing structure according to claim 1, characterized in that: The mounting hole (6) is a circular hole.

9. A liquid cooling plate, characterized in that: It comprises a liquid cooling plate body (1), and a liquid cooling plate fixing structure (2) according to any one of claims 1 to 8, wherein the liquid cooling plate fixing structure (2) is connected to the liquid cooling plate body (1).

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