Plugging strip, liquid cooling plate and energy storage battery

Abstract

The utility model provides a plugging strip, a liquid cooling plate and an energy storage battery, and relates to the technical field of energy storage batteries. The plugging strip comprises a limiting part and a plugging part connected with the limiting part, the limiting part is used for abutting against the end face of the liquid cooling plate body, the plugging part is used for being matched with a runner cavity of the liquid cooling plate body, and the connecting position of the limiting part and the plugging part is connected with the end face of the liquid cooling plate body in a welded mode to form a first welding seam. The plugging strip is in a long-strip-shaped step shape, and during installation, the side face, facing the plugging part, of the limiting part can abut against the end face of the liquid cooling plate body, so that the plugging strip is prevented from being plugged too deep, the installation precision is high, and the installation efficiency is high. The plugging strip is clamped on the end face of the liquid cooling plate body, and the plugging strip does not displace when being impacted, so that the first welding seam can be protected, the first welding seam is prevented from being damaged due to impact, and the leakage of the cooling liquid is further prevented.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage batteries, and in particular to a sealing strip, a liquid cooling plate, and an energy storage battery. Background Art

[0002] Commercial vehicle battery packs require a reasonable temperature to operate properly. This generates heat, so they must be cooled by a cooling system. Currently, commercial vehicle battery packs typically use aluminum profiles as liquid cooling plates, with internal ribs forming coolant channels.

[0003] Profile-type liquid cooling plates require welded sealing strips at the front and back. The current solution is to insert the strips directly into the cavity of the liquid cooling plate and weld them in place. Because the strips lack a retaining mechanism, they can be inserted too deeply. Furthermore, when the battery pack is struck head-on, the strips lack a retaining mechanism and can easily shift under the force, damaging the welds and causing coolant leaks. Utility Model Content

[0004] The purpose of the present application is to address the deficiencies in the above-mentioned prior art and provide a sealing strip and a liquid cooling plate, which have high installation precision and are not easily displaced when impacted.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] According to a first aspect of an embodiment of the present application, a sealing strip is provided, comprising: a limiting portion and a sealing portion connected to the limiting portion, the limiting portion being used to abut against the end face of the liquid cooling plate body, the sealing portion being used to cooperate with the flow channel cavity of the liquid cooling plate body, and the connection between the limiting portion and the sealing portion being welded to the end face of the liquid cooling plate body to form a first weld.

[0007] Optionally, the first weld surrounds the sealing portion.

[0008] Optionally, the orthographic projection of the blocking portion on the limiting portion is located within the edge of the limiting portion.

[0009] Optionally, the blocking portion is provided with an avoidance groove, which is used to avoid the ribs in the flow channel cavity.

[0010] Optionally, the thickness of the sealing portion is 2 mm-10 mm.

[0011] According to a second aspect of an embodiment of the present application, another blocking strip is provided, which is used to cooperate with a limiting groove on the end face of the liquid cooling plate body. The thickness of the blocking strip is greater than the depth of the limiting groove. The blocking strip is welded to the end face of the liquid cooling plate body to form a second weld.

[0012] Optionally, the second weld surrounds the sealing strip.

[0013] Optionally, the thickness of the sealing strip is 3 mm to 12 mm.

[0014] According to a third aspect of the embodiments of the present application, a liquid cooling plate is provided, comprising a liquid cooling plate body and a sealing strip as described above and arranged on an end surface of the liquid cooling plate body.

[0015] According to a fourth aspect of the embodiments of the present application, an energy storage battery is provided, comprising the liquid cooling plate as described above.

[0016] The beneficial effects of this application include:

[0017] The present application provides a blocking strip, comprising: a limiting portion and a blocking portion connected to the limiting portion, the limiting portion being used to abut against the end face of the liquid cooling plate body, the blocking portion being used to cooperate with the flow channel cavity of the liquid cooling plate body, and the connection between the limiting portion and the blocking portion being welded to the end face of the liquid cooling plate body to form a first weld. The blocking strip is in the shape of a long strip with steps. During installation, the side of the limiting portion facing the blocking portion can abut against the end face of the liquid cooling plate body, thereby preventing the blocking strip from being inserted too deeply, having high installation accuracy and high installation efficiency. The blocking strip is stuck on the end face of the liquid cooling plate body, and when the blocking strip is hit, it will not be displaced, thereby protecting the first weld and preventing the first weld from being damaged by the impact, thereby preventing the coolant from leaking.

[0018] The present application also provides another blocking strip, which is used to cooperate with the limiting groove on the end face of the liquid cooling plate body. The thickness of the blocking strip is greater than the depth of the limiting groove. The blocking strip is welded to the end face of the liquid cooling plate body to form a second weld. The blocking strip is in the shape of a long strip. During installation, the blocking strip is inserted into the limiting groove at the end of the flow channel cavity. The limiting surface formed between the bottom of the limiting groove and the flow channel cavity can limit the blocking strip, thereby preventing the blocking strip from being inserted too deep. It has high installation accuracy and high installation efficiency. The blocking strip is stuck on the limiting surface. When the blocking strip is hit, it will not move, thereby protecting the second weld. Moreover, the thickness of the blocking strip is greater than the depth of the limiting groove. The portion of the blocking strip located outside the liquid cooling plate body can avoid direct impact on the second weld in the event of a head-on collision. Therefore, the blocking strip can protect the second weld, prevent the second weld from being damaged by impact, and thus prevent coolant leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1A schematic diagram of the structure of the blocking strip provided in an embodiment of the present application;

[0021] Figure 2 A cross-sectional view of a sealing strip provided in an embodiment of the present application;

[0022] Figure 3 One of the structural schematic diagrams of the energy storage battery provided in the embodiment of the present application;

[0023] Figure 4 One of the partial cross-sectional views of the energy storage battery provided in an embodiment of the present application;

[0024] Figure 5 The second structural diagram of the energy storage battery provided in the embodiment of the present application;

[0025] Figure 6 This is the second partial cross-sectional view of the energy storage battery provided in an embodiment of the present application.

[0026] Icons: 100-sealing strip; 110-limiting portion; 111-abutting surface; 112-edge of the limiting portion; 113-edge of the abutting surface; 120-sealing portion; 121-orthographic projection of the sealing portion on the limiting portion; 130-connection between the limiting portion and the sealing portion; 200-liquid cooling plate body; 210-flow channel cavity; 220-flow channel opening; 230-limiting groove; 231-limiting surface; 310-first weld; 320-second weld; 400-energy storage battery. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application as claimed, but merely represents selected embodiments of the present application. It should be noted that, unless there is a conflict, the various features of the embodiments of the present application may be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element 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 application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] For the first aspect of the embodiment of this application, please refer to Figure 1 and Figure 2 , providing a blocking strip 100 including: a limiting portion 110 and a blocking portion 120 connected to the limiting portion 110, please refer to Figure 3 and Figure 4 The limiting portion 110 is used to abut against the end surface of the liquid cooling plate body 200, and the blocking portion 120 is used to cooperate with the flow channel cavity 210 of the liquid cooling plate body 200. The connection 130 between the limiting portion and the blocking portion is welded to the end surface of the liquid cooling plate body 200 to form a first weld 310.

[0033] The above-mentioned blocking strip 100 is arranged on the liquid cooling plate body 200. The liquid cooling plate body 200 is provided with a flow channel cavity 210 for circulating the cooling liquid inside. The end of the flow channel cavity 210 extends to the end face of the liquid cooling plate body 200, thereby forming a flow channel opening 220 on the end face of the liquid cooling plate body 200. The blocking strip 100 is installed at the flow channel opening 220 to block the flow channel opening 220, thereby preventing the cooling liquid from leaking. Specifically, the blocking portion 120 of the blocking strip 100 extends from the flow channel opening 220 of the liquid cooling plate body 200 into the flow channel cavity 210. The size and shape of the blocking portion 120 are adapted to the size and shape of the end of the flow channel cavity 210, thereby blocking the end of the flow channel cavity 210. The limiting portion 110 is located outside the cooling plate body 200. The side of the limiting portion 110 where it connects to the sealing portion 120 abuts against the end face of the cooling plate body 200. The joint 130 between the limiting portion and the sealing portion is clamped onto the outer edge of the flow channel opening 220 and welded to the outer edge of the flow channel opening 220, thereby securing the sealing strip 100 to the cooling plate body 200.

[0034] The blocking strip 100 is a long, stepped strip. During installation, the side of the stopper 110 facing the blocking portion 120 abuts against the end face of the cooling plate body 200, preventing the blocking strip 100 from being inserted too deeply. This ensures high installation precision and efficiency. The blocking strip 100 is locked onto the end face of the cooling plate body 200. When impacted, it remains intact, protecting the first weld 310 from damage and preventing coolant leakage.

[0035] Optionally, the first weld 310 surrounds the sealing portion 120 .

[0036] The connection 130 between the stopper and the sealing portion is annular, encircling the side of the sealing portion 120. The first weld 310 covers the entire connection 130 between the stopper and the sealing portion, enhancing the welded connection between the sealing strip 100 and the liquid cooling plate body 200. This also makes the first weld 310 more impact-resistant and further prevents coolant leakage.

[0037] Alternatively, see Figure 1 , the orthographic projection 121 of the blocking portion on the limiting portion is located within the edge 112 of the limiting portion.

[0038] The abutment surface 111 of the limiting portion 110 is connected to the blocking portion 120. The abutment surface 111 is the side surface of the limiting portion 110 that abuts the end surface of the liquid cooling plate body 200. The orthographic projection 121 of the blocking portion on the limiting portion is the projection of the blocking portion 120 onto the abutment surface 111 in a direction perpendicular to the abutment surface 111. This projection is located within the edge 113 of the abutment surface, that is, within the edge 112 of the limiting portion.

[0039] Optionally, the thickness of the sealing portion 120 is 2 mm-10 mm.

[0040] It should be noted that the thickness of the sealing portion 120 refers to the dimension of the sealing portion 120 in a direction perpendicular to the abutting surface 111 of the limiting portion 110. The thickness of the sealing portion 120 can be 2 mm or 10 mm. A thickness of the sealing portion 120 within the range of 2 mm to 10 mm facilitates installation of the sealing strip 100 while ensuring a good sealing effect, and does not occupy excessive space in the flow channel cavity 210.

[0041] Optionally, an avoidance groove is provided on the blocking portion 120 , and the avoidance groove is used to avoid the ribs in the flow channel cavity 210 .

[0042] The blocking portion 120 is directly mounted on the end of the flow channel cavity 210, which may interfere with the ribs in the flow channel cavity 210. An avoidance groove is provided on the blocking portion 120 to avoid the ribs in the flow channel cavity 210, so that the blocking portion 120 can be installed smoothly.

[0043] In other embodiments, a groove may be formed at the end of the flow channel cavity 210, and the blocking portion 120 may be installed in the groove and cooperate with the groove. In this way, interference between the blocking portion 120 and the ribs in the flow channel cavity 210 can be avoided. At the same time, the groove can also serve as a limit for the blocking portion 120.

[0044] In a second aspect of the present invention, another sealing strip 100 is provided. Figure 5 and Figure 6 The blocking strip 100 is used to cooperate with the limiting groove 230 on the end surface of the liquid cooling plate body 200. The thickness of the blocking strip 100 is greater than the groove depth of the limiting groove 230. The blocking strip 100 is welded to the end surface of the liquid cooling plate body 200 to form a second weld 320.

[0045] The above-mentioned blocking strip 100 is arranged on the liquid cooling plate body 200. The liquid cooling plate body 200 has a flow channel cavity 210 for circulating the coolant inside. The end of the flow channel cavity 210 extends to the end face of the liquid cooling plate body 200. The end of the flow channel cavity 210 is processed to form a limiting groove 230. A limiting surface 231 is formed between the bottom of the limiting groove 230 and the flow channel cavity 210. The notch of the limiting groove 230 forms a flow channel opening 220 on the end face of the liquid cooling plate body 200. The blocking strip 100 is installed in the limiting groove 230. The end of the blocking strip 100 abuts against the limiting surface to block the flow channel opening 220, thereby preventing the coolant from leaking. The thickness of the blocking strip 100 is greater than the depth of the limiting groove 230. Therefore, the blocking strip 100 is partially exposed in the limiting groove 230 and is located outside the liquid cooling plate body 200. The blocking strip 100 is welded to the end surface of the liquid cooling plate body 200 , that is, the blocking strip 100 is welded to the outer edge of the flow channel opening 220 , thereby fixing the blocking strip 100 on the liquid cooling plate body 200 .

[0046] It should be noted that the thickness of the blocking strip 100 refers to the dimension of the blocking strip 100 in the direction perpendicular to the end face of the liquid cooling plate body 200 , and the depth of the limiting groove 230 refers to the dimension of the limiting groove 230 in the direction perpendicular to the end face of the liquid cooling plate body 200 .

[0047] The above-mentioned blocking strip 100 is in the shape of a long strip. During installation, the blocking strip 100 is inserted into the limiting groove 230 at the end of the flow channel cavity 210. The limiting surface 231 formed between the bottom of the limiting groove 230 and the flow channel cavity 210 can limit the blocking strip 100, thereby preventing the blocking strip 100 from being inserted too deep, with high installation accuracy and high installation efficiency. The blocking strip 100 is stuck on the limiting surface, and when the blocking strip 100 is hit, it will not be displaced, so the second weld 320 can be protected. Moreover, the thickness of the blocking strip 100 is greater than the depth of the limiting groove 230, and the portion of the blocking strip 100 located outside the liquid cooling plate body 200 can avoid direct impact on the second weld 320 during a frontal impact. Therefore, the above-mentioned blocking strip 100 can protect the second weld 320, avoid damage to the second weld 320 due to impact, and thus prevent leakage of coolant.

[0048] Optionally, the second weld 320 surrounds the blocking strip 100. This configuration improves the strength of the weld connection between the blocking strip 100 and the liquid cooling plate body 200, and also makes the second weld 320 more impact-resistant, further preventing coolant leakage.

[0049] Optionally, the thickness of the blocking strip 100 is 3 mm to 12 mm.

[0050] It should be noted that the thickness of the blocking strip 100 can be 3 mm or 12 mm. A thickness of the blocking strip 100 within the range of 3 mm to 12 mm facilitates installation of the blocking strip 100 while ensuring a good sealing effect, without occupying excessive space in the flow channel cavity 210.

[0051] For the third aspect of the embodiment of this application, please refer to Figure 3 and Figure 5 , provides a liquid cooling plate, comprising a liquid cooling plate body 200 and a sealing strip 100 as described above and arranged on an end surface of the liquid cooling plate body 200 .

[0052] Optionally, there are two blocking strips 100 , which are respectively provided on two opposite end surfaces of the liquid cooling plate body 200 .

[0053] Alternatively, see Figures 1 to 4 A flow channel cavity 210 for circulating cooling liquid is provided in the liquid cooling plate body 200. The end of the flow channel cavity 210 extends to the end surface of the liquid cooling plate body 200. The sealing strip 100 includes a limiting portion 110 and a sealing portion 120 connected to the limiting portion 110. The limiting portion 110 abuts against the end surface of the liquid cooling plate body 200. The sealing portion 120 cooperates with the flow channel cavity 210. The connection 130 between the limiting portion and the sealing portion is welded to the end surface of the liquid cooling plate body 200 to form a first weld 310.

[0054] Alternatively, see Figure 5 and Figure 6 A flow channel cavity 210 for circulating cooling liquid is provided in the liquid cooling plate body 200. The end of the flow channel cavity 210 extends to the end face of the liquid cooling plate body 200. A limiting groove 230 is provided at the end of the flow channel cavity 210. A limiting surface is formed between the bottom of the limiting groove 230 and the flow channel cavity 210. The blocking strip 100 cooperates with the limiting groove 230. The thickness of the blocking strip 100 is greater than the depth of the limiting groove 230. The blocking strip 100 is welded to the end face of the liquid cooling plate body 200 to form a second weld 320.

[0055] For the fourth aspect of the embodiment of this application, please refer to Figure 3 and Figure 5 , provides an energy storage battery 400, including the liquid cooling plate as described above.

[0056] The liquid cooling plate and energy storage battery 400 have the same structure and benefits as the blocking strip 100 in the previous embodiment. The structure and benefits of the blocking strip 100 have been described in detail in the previous embodiment and will not be repeated here.

[0057] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A blocking strip, characterized in that: include: A limiting portion and a sealing portion connected to the limiting portion, the limiting portion is used to abut against the end face of the liquid cooling plate body, the sealing portion is used to cooperate with the flow channel cavity of the liquid cooling plate body, the connection between the limiting portion and the sealing portion is welded to the end face of the liquid cooling plate body to form a first weld, the first weld surrounds the sealing portion, and the orthographic projection of the sealing portion on the limiting portion is located within the edge of the limiting portion.

2. The blocking strip according to claim 1, wherein: The blocking portion is provided with an avoidance groove, and the avoidance groove is used to avoid the ribs in the flow channel cavity.

3. The blocking strip according to claim 1, wherein: The thickness of the sealing portion is 2mm-10mm.

4. A blocking strip, characterized in that: The blocking strip is used to cooperate with the limiting groove on the end surface of the liquid cooling plate body. The thickness of the blocking strip is greater than the depth of the limiting groove. The blocking strip is welded to the end surface of the liquid cooling plate body to form a second weld, and the second weld surrounds the blocking strip.

5. The blocking strip according to claim 4, wherein: The thickness of the blocking strip is 3mm-12mm.

6. A liquid cooling plate, characterized in that: The invention comprises a liquid cooling plate body and a sealing strip according to any one of claims 1 to 3 or any one of claims 4 to 5, which is arranged on the end surface of the liquid cooling plate body.

7. An energy storage battery, characterized in that: Comprising the liquid cooling plate as claimed in claim 6.

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