Liquid cooling plate for battery module
By inserting a W-shaped cross-sectional insert into the runner of the liquid-cooled plate, the runner is divided into multiple triangular acupoints, which solves the problems of low cooling efficiency and high cost of existing liquid-cooled plates, and achieves an efficient, stable and economical liquid-cooled plate design.
Patent Information
- Application Number
- CN202420348396.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-02-26
AI Technical Summary
In actual applications, existing ultra-thin stamped liquid cold plates are limited by factors such as the risk of runner deformation, low turbulence, and high thermal resistance, resulting in low cooling efficiency and high cost.
A liquid-cooled plate for battery modules is designed, using the base plate and the cover plate to form a closed flow channel, and insert multiple W-shaped section inserts into the flow channel. The flow channel is divided into multiple triangular acupuncture points through the insert, increasing the contact area between the liquid-cooled medium and the flow channel wall and introducing turbulence.
It significantly improves the heat dissipation efficiency of liquid-cooled plates, enhances structural stability and durability, and at the same time realizes a cost-effective production process and reduces costs.
Smart Images
Figure CN222562765U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of new energy, and in particular to a liquid cooling plate for a battery module. Background Art
[0002] In the development of battery module technology, improving the service life of the battery and ensuring the safety and stability of use are key research and development goals. To achieve these goals, the use of liquid cooling plates for contact temperature control has become a popular solution. Liquid cooling plates effectively maintain the battery within its optimal operating temperature range by directly cooling the battery module, avoiding safety issues and performance degradation caused by overheating. Among the many cooling technologies, ultra-thin stamping liquid cooling plates are popular for their low cost, thin material and good cooling performance, especially in the fields of electric vehicles and large battery energy storage systems.
[0003] Although ultra-thin stamped liquid cold plates have significant advantages, their performance in practical applications is limited by several key factors:
[0004] 1. Risk of flow channel deformation: The weight of the battery module may exert pressure on the liquid cooling plate, causing deformation of the flow channel of the thinner liquid cooling plate, affecting the flow of the cooling medium and cooling efficiency.
[0005] 2. Low turbulence: The narrower flow channel limits the turbulence of the cooling medium flow and reduces the heat exchange efficiency between the fluid and the flow channel wall.
[0006] 3. High heat transfer resistance: Low turbulence leads to the formation of a thicker heat transfer boundary layer between the liquid cooling medium and the liquid cooling plate body, which increases the thermal resistance and reduces the heat dissipation effect.
[0007] Although the use of stronger and more thermally conductive materials, as well as the design of wider flow channels or the introduction of special structures can significantly improve the performance of liquid cooling plates, these improvements are often accompanied by increased production costs. Rising material costs, increased design and manufacturing complexity, and reduced production efficiency may pose challenges to the widespread application of liquid cooling plates.
[0008] In summary, developing a liquid cooling plate that can effectively improve structural strength and thermal conductivity while ensuring low cost is of great significance and value. Utility Model Content
[0009] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a liquid cooling plate for a battery module, which has high strength and good thermal conductivity and is cost-effective.
[0010] To achieve the above-mentioned purpose, the present application discloses a liquid cooling plate for a battery module, comprising a base plate, a cover plate matched with the base plate, and a plug-in, wherein a continuous square groove is punched out on the base plate, and the cover plate seals the groove opening to form a continuous flow channel, and the cross-section of the flow channel is rectangular; the flow channel has at least one liquid inlet and one outlet; the plug-in is located in the flow channel, and the cross-section of the plug-in is W-shaped. The height and width of the plug-in are adapted to the flow channel, so that the top end of the plug-in is in conflict with the cover plate, and the bottom end is in conflict with the base plate. Through the cooperation between the plug-in and the flow channel, the flow channel is divided into a plurality of triangular channels, and the liquid cooling medium can flow in the triangular channels.
[0011] Furthermore, the plug-in in the flow channel is in the shape of a straight rod, which is formed by stamping and bending a steel bar.
[0012] Furthermore, there are multiple plug-ins in the flow channel.
[0013] Furthermore, the cover plate and the bottom plate are welded together as a whole.
[0014] Compared with the prior art, the present invention has at least one of the following beneficial effects:
[0015] 1. Improve heat dissipation efficiency: The flow channel is divided into multiple holes by the built-in W-shaped cross-section plug-in, which significantly increases the surface area of the liquid cooling medium in contact with the liquid cooling plate and introduces turbulence, effectively thinning the heat transfer boundary layer and reducing the heat transfer thermal resistance. This design optimizes the heat exchange efficiency and ensures that the battery module can operate at the optimal temperature, thereby improving battery performance and extending service life.
[0016] 2. Enhanced structural stability and durability: The cover plate and the stamping plate are welded together using brazing technology. Combined with the support of the internal plug-in, this structural design not only improves the overall stability and durability of the liquid cooling plate, but also effectively disperses the pressure exerted by the battery module, reduces the risk of flow channel deformation, and ensures long-term stable use.
[0017] 3. Economical and efficient production process: The economical and efficient production of liquid cooling plates is achieved through standardized steel bar stamping and bending processes and mature brazing and welding technology. This manufacturing process not only controls costs but also ensures the high performance of the liquid cooling plate, making it a competitive battery module temperature control solution on the market.
[0018] Taking the above beneficial effects into consideration, the liquid cooling plate for battery modules of the present application provides an efficient, stable and cost-effective temperature control solution for battery modules, which has broad application prospects and significant market potential.
[0019] Other features and advantages of the subject technology of the present application will be set forth in the following description, and in part will be apparent from the description, or can be learned by practicing the subject technology of the present application. The advantages of the subject technology of the present application will be realized and obtained through the structures specifically pointed out in the written description and its claims and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:
[0021] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:
[0022] Figure 1 It is a structural explosion diagram of an embodiment disclosed in the present application.
[0023] Figure 2 It is a structural schematic diagram of a base plate in an embodiment disclosed in the present application.
[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of a plug-in in an embodiment disclosed in the present application.
[0025] Figure 4 It is a schematic diagram of the structure after the flow channel and the plug-in are matched in an embodiment disclosed in the present application.
[0026] Figure 5 It is a schematic diagram of the usage status of an embodiment disclosed in the present application when used in conjunction with a battery module. DETAILED DESCRIPTION
[0027] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.
[0028] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.
[0029] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification.
[0030] The singular forms "a", "the" and "the" used in the specification include the plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. The terms "between X and Y" and "between approximately X and Y" used in the specification should be interpreted as including X and Y. The term "between approximately X and Y" used in this specification means "between approximately X and approximately Y", and the term "from approximately X to Y" used in this specification means "from approximately X to approximately Y".
[0031] In the specification, when an element is said to be "on", "attached", "connected", "coupled", or "contacting" another element, the element may be directly on, attached, connected, coupled, or contacting another element, or there may be an intermediate element. In contrast, when an element is said to be "directly" "on", "directly attached", "directly connected", "directly coupled", or "directly contacting" another element, there will be no intermediate element. In the specification, a feature is arranged "adjacent" to another feature, which may refer to a feature having a portion that overlaps with an adjacent feature or a portion that is located above or below an adjacent feature.
[0032] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "back", "higher", "lower", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly. Example
[0033] Figures 1 to 5An exemplary structure for achieving the technical purpose of the present application is shown, specifically a liquid cooling plate for a battery module, which is intended to improve the heat dissipation efficiency of the battery module, extend the battery life, and ensure the safety and stability of the battery operation.
[0034] In terms of structure, in this embodiment, the liquid cooling plate includes three main components: a base plate 1 , a cover plate 2 , and a plurality of plug-ins 3 .
[0035] Specifically, as shown in the figure, in this embodiment, the base plate 1 is used as the basic component of the liquid cooling plate for the battery module, and the base plate 1 is designed to achieve two main goals: efficient heat conduction and structural stability. To this end, the base plate 1 is designed with continuous square grooves 4, which are formed by a precise stamping process to cooperate with the cover plate 2 installed later to form a closed flow channel 5. The selection of the square groove 4 is based on its ability to provide a larger surface area and lower fluid resistance, thereby optimizing the flow of the liquid cooling medium and improving the heat exchange efficiency.
[0036] It should be understood that the manufacturing process of the bottom plate 1 generally adopts high-precision stamping technology, which can ensure the accurate formation of the square channel while maintaining the integrity and strength of the material. During the stamping process, the metal sheet is pressed once or multiple times by a special mold to form a predetermined channel shape and size.
[0037] In this embodiment, the cover plate 2 is used in conjunction with the bottom plate 1 to form a closed flow channel 5 to achieve effective cooling of the battery module.
[0038] More specifically, the cover plate 2 is used to seal the opening of the square channel 4 to form a continuous and closed flow channel 5. When designing the cover plate, the shape and size of the cover plate 2 must be precisely matched with the base plate 1 to achieve efficient heat exchange and fluid dynamics performance.
[0039] It should be understood that the connection between the cover plate 2 and the base plate 1 is usually made by welding technology, such as brazing or laser welding. These high-strength welding methods can ensure the tight connection between the cover plate 2 and the base plate 1 to prevent leakage of the liquid cooling medium. In addition, the welding area may be specially treated, such as grinding and polishing, to eliminate welding defects and ensure the flatness and beauty of the liquid cooling plate surface.
[0040] In this embodiment, a plurality of straight rod-shaped plug-ins 3 are located in the flow channel 5. The plug-ins 3 are used to optimize the flow path of the liquid cooling medium, increase the fluid dynamics effect, and thus improve the heat exchange efficiency. The cross-section of each plug-in 3 is W-shaped. This special geometric shape is designed to divide the flow channel 5 into a plurality of triangular channels, so that the liquid cooling medium forms more turbulence in the channels, increases the contact area with the wall of the flow channel 5, and thus improves the heat exchange performance. At the same time, the design of the plug-in 3 also takes into account the improvement of the mechanical stability of the liquid cooling plate and the reduction of the risk of deformation of the flow channel 5 caused by the pressure of the battery module.
[0041] More specifically, the plug-in 3 is usually made of high-strength steel bars, which are selected for their good mechanical properties and economy. The high-strength steel bars can withstand the pressure applied by the battery module without being easily deformed, maintaining the integrity of the plug-in 3 structure and the stability of the flow channel. In addition, although the thermal conductivity of steel is not as good as that of copper or aluminum, in this application, the main function of the plug-in 3 is to optimize the fluid flow and support the structure, rather than directly participate in heat conduction, so the selection of its material focuses more on structural performance.
[0042] Based on the above structure, the working principle of this embodiment is as follows:
[0043] When the liquid cooling medium enters the flow channel through the liquid inlet, the triangular cavity created by the W-shaped plug 3 causes the fluid to form turbulence during the flow process, increasing the contact area and heat exchange efficiency between the liquid cooling medium and the wall of the flow channel 5. Subsequently, the liquid cooling medium carries away the heat generated by the battery module and leaves through the outlet, thereby achieving effective cooling of the battery module.
[0044] Although the exemplary embodiments of the present disclosure have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.
Claims
1. A liquid cooling plate for a battery module, characterized in that: It includes a base plate, a cover plate matched with the base plate, and a plug-in, wherein a continuous square groove is punched out on the base plate, and the cover plate seals the groove opening to form a continuous flow channel, and the cross-section of the flow channel is rectangular; the flow channel has at least one liquid inlet and one outlet; the plug-in is located in the flow channel, and the cross-section of the plug-in is W-shaped. The height and width of the plug-in are adapted to the flow channel, so that the top end of the plug-in is in conflict with the cover plate, and the bottom end is in conflict with the base plate. Through the cooperation between the plug-in and the flow channel, the flow channel is divided into a plurality of triangular channels, and the liquid cooling medium can flow in the triangular channels.
2. A liquid cooling plate for a battery module as claimed in claim 1, characterized in that: The plug-in unit in the flow channel is in the shape of a straight rod and is formed by stamping and bending a steel bar.
3. A liquid cooling plate for a battery module as claimed in claim 1, characterized in that: There are a plurality of inserts in the flow channel.
4. A liquid cooling plate for a battery module as claimed in claim 1, characterized in that: The cover plate and the bottom plate are welded together as a whole.