Energy storage heat exchange plate of liquid cooling flow channel
By introducing an elastic silicone heat exchange layer, asymmetric parallel flow channels, and turbulence protrusions into the liquid-cooled heat exchange plate, the problems of low heat transfer efficiency and uneven flow of existing liquid-cooled heat exchange plates are solved, achieving efficient heat management and uniform cooling effect, and improving the stability and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-03-20
AI Technical Summary
Existing liquid-cooled heat exchange plates suffer from low heat transfer efficiency, uneven flow, and unreasonable flow channel design in high-energy-density equipment, resulting in unsatisfactory cooling effects and increased risk of equipment damage and energy consumption.
The design employs an elastic silicone heat-spreading layer, asymmetric parallel flow channels, and alternating high and low turbulence protrusions to enhance heat conduction and fluid flow uniformity. The flow channel structure is optimized by filling tiny gaps with elastic silicone, distributing asymmetric flow channels, and disrupting the thermal boundary layer with turbulence protrusions.
It significantly improves thermal management performance, enhances heat exchange efficiency and fluid temperature uniformity, reduces the risk of equipment overheating and energy consumption, and extends equipment life.
Smart Images
Figure CN224020800U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to liquid cooling heat exchange technology, in particular to a liquid cooling flow channel with improved flow channel structure for energy storage heat exchange plate, which is suitable for the cooling system of high energy density energy storage devices such as batteries, especially in electric vehicle battery thermal management and high power energy storage system. BACKGROUND
[0002] The existing liquid cooling heat exchange technology has been widely used in the temperature control management of electronic devices, energy storage systems and electric vehicle batteries, especially in the field involving high power density and rapid heat accumulation. The traditional liquid cooling system generally includes a liquid cooling flow channel, a heat exchange surface and a cooling liquid. The cooling liquid exchanges heat with the heat exchange surface through the flow channel to achieve the purpose of temperature control. In these technologies, the design of the heat exchange plate is particularly critical, which is usually composed of a uniform heating layer, a heat exchange plate body and a thermal insulation layer. The heat is carried away by the liquid flowing through the surface of the heat exchange plate, thereby maintaining the stable operation of the device.
[0003] However, the existing liquid cooling heat exchange plate still has some significant shortcomings in practical application. First, the contact area between the heat exchange surface and the cooled object in the existing heat exchange plate is usually small, which leads to low heat transfer efficiency. Especially in high-density energy storage systems, the contact area between the battery surface and the heat exchange surface is limited, which cannot effectively conduct the generated heat to the cooling liquid, resulting in unsatisfactory cooling effect. Low heat conduction efficiency directly affects the heat dissipation capacity of the system, which may cause the device to overheat, increase the risk of device damage, and also reduce its performance and service life.
[0004] Secondly, the existing liquid cooling heat exchange plate often adopts a straight flow channel design, which seems to improve the flow efficiency of the fluid on the surface, but in actual use, there are obvious flow problems. When the liquid flows through the straight flow channel, the flow is smooth, forming a clear thermal boundary layer, which leads to a large temperature difference between the liquid and the solid heat exchange surface, thereby affecting the efficiency of convective heat transfer. This problem makes the actual performance of the heat exchange system much lower than the theoretical value, which limits the cooling effect, and the temperature distribution of the liquid in the liquid cooling flow channel is uneven, which increases the circulating energy consumption of the cooling liquid and the complexity of the system.
[0005] Therefore, the design of the existing liquid cooling heat exchange plate still cannot fully meet the cooling needs of modern energy storage systems, especially high energy density devices such as electric vehicle batteries. In view of these problems, it is urgent to develop a new liquid cooling flow channel structure to improve heat exchange efficiency, enhance heat conduction performance, and optimize liquid flow characteristics. This not only can improve the stability and safety of the device, but also can prolong the service life of the device, reduce the energy consumption of the system, and improve the overall system efficiency. Therefore, the development of a new stamping parallel liquid cooling flow channel energy storage heat exchange plate has important technical significance and application value. CONTENT OF THE INVENTION
[0006] The purpose of the present application is to at least overcome one of the deficiencies of the prior art, and provide a stamping parallel type liquid cooling flow channel energy storage heat exchange plate. The heat exchange plate optimizes the heat exchange surface and flow channel design, improves the overall heat exchange efficiency of the liquid cooling system, solves the problems of low heat conduction efficiency, thick thermal boundary layer and insufficient contact area of the heat exchange surface of the traditional liquid cooling heat exchange plate, and effectively improves the thermal management performance.
[0007] To achieve the above-mentioned purpose, the present application discloses a liquid cooling flow channel energy storage heat exchange plate, which comprises from top to bottom: an elastic silica gel heat equalizing layer, a heat exchange main body layer with a turbulence unit, and a heat insulation base layer. The elastic silica gel heat equalizing layer is located at the top layer of the heat exchange plate, and its main function is to increase the contact area between the battery module surface and effectively reduce the contact thermal resistance. The elastic silica gel heat equalizing layer adopts high thermal conductivity silica gel material, and the elastic property of silica gel can automatically fill the small gap between the battery surface and the heat exchange plate, thereby enhancing the consistency of the contact surface and the heat transfer efficiency.
[0008] The heat exchange main body layer has a flow channel, and the flow channel is of an asymmetric parallel topology structure. Compared with the traditional series flow channel or symmetric parallel flow channel design, the asymmetric parallel flow channel can realize more uniform distribution of cooling liquid, avoid the problem of excessive or insufficient local flow, and ensure the maximization of heat exchange efficiency. The flow channel has alternating high-low turbulence protruding structures in some areas. The height of the protrusions is optimized according to the fluid flow rate and cooling demand, and the specific height difference is between 1 to 5 mm. These alternating high-low turbulence protruding structures induce complex vortex and turbulence effects in the fluid flow path, further destroy the thermal boundary layer in the flow, and thereby enhance the heat exchange efficiency. The alternating high-low design ensures that the fluid can experience multiple acceleration and deceleration processes when passing through the flow channel, thereby strengthening the mixing effect of the fluid and effectively improving the convective heat transfer coefficient between the fluid and the heat exchange surface.
[0009] Further, the asymmetric parallel topology structure includes at least two parallel flow channel branches, and the cross-sectional area ratio of each branch is in the range of 1:1.2 to 1:3.
[0010] Further, the turbulence protruding structures are arranged in a wave shape in the alternating high-low direction along the flow direction.
[0011] The heat insulation base layer is adapted to the shape of the bottom surface of the heat exchange main body, and is connected and matched with the heat exchange main body through heat insulation blocks, so as to form a heat insulation layer between the heat insulation base layer and the bottom surface of the heat exchange main body.
[0012] Further, the heat insulation blocks are columnar structures distributed between the bottom surface of the heat exchange main body and the heat insulation base layer.
[0013] The energy storage heat exchange plate of the present application can significantly improve the heat conduction efficiency and the convective heat exchange effect of fluid flow through the multi-layer composite structure and the flow channel design. In particular, the design of alternating high and low turbulence protrusions can effectively destroy the thermal boundary layer and enhance the heat exchange effect between the fluid and the heat exchange surface, thereby improving the overall heat dissipation capacity of the heat exchange plate.
[0014] The above-listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0015] Aspects of the present disclosure will become more fully understood from the detailed description and accompanying drawings, in which the structures of the respective structures shown in the drawings are sometimes shown with exaggerated positions, sizes and ranges, etc. In the drawings:
[0016] Figure 1 is a structural schematic diagram of an embodiment of the present application.
[0017] Figure 2 is a structural schematic diagram of the internal structure of a heat exchange main body in an embodiment of the present application. DETAILED DESCRIPTION
[0018] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It should be understood, however, that the present disclosure can be presented in many different forms 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 to fully inform those skilled in the art of the scope of protection of the present disclosure. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.
[0019] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the sizes of some features can be distorted for the sake of clarity.
[0020] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate.
[0021] As used in the specification, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The terms "comprises," "comprising," "includes," "including," and "contains," as used in the specification, mean that there are contained, but do not necessarily exclude, one or more additional features. The term "and / or" as used in the specification includes any and all combinations of one or more of the associated listed items. Embodiments
[0022] The liquid cooling channel energy storage heat exchange plate described in the embodiment aims to provide a heat exchange system with optimized structure, high heat dissipation efficiency, and applicability to battery modules.
[0023] Referring to the drawings Figure 1 And 2 The heat exchange plate comprises, from top to bottom, an elastic silica gel uniform heating layer 1, a heat exchange main body layer 2 with a turbulence unit, and a heat insulation base layer 3. The structure of each component of the heat exchange plate and the connection relationship between them will be described in detail below.
[0024] First, the elastic silica gel uniform heating layer 1 is located at the top layer of the heat exchange plate, and its main function is to increase the contact area between the heat exchange plate and the surface of the battery module and effectively reduce the contact thermal resistance. The design of this layer is based on the high thermal conductivity and elastic properties of silica gel, which ensures that the elastic silica gel can automatically fill the small gaps between the battery surface and the heat exchange plate during operation, thereby improving the heat transfer efficiency. The selection of the elastic silica gel material is based on its stability and excellent thermal conductivity in high temperature environment, which can ensure that the battery module maintains good thermal balance during operation. The silica gel layer effectively improves the consistency of the contact surface and reduces the thermal resistance caused by poor contact through elastic compression and adhesion.
[0025] In this technical solution, the design and application of the elastic silica gel uniform heating layer 1 are common designs for those skilled in the art, and therefore do not need to be disclosed in further detail.
[0026] Next, the heat exchange main body layer 2 is the core part of the heat exchange plate. The heat exchange main body layer 2 is provided with a flow channel 4, and the flow channel 4 is designed as an asymmetric parallel topology structure. Compared with the traditional series flow channel or symmetric parallel flow channel design, the asymmetric parallel flow channel can achieve more uniform distribution of the cooling liquid, avoiding the problem of excessive or insufficient local flow, ensuring the uniformity of fluid flow, and thereby maximizing the heat exchange efficiency. Specifically, the asymmetric parallel topology structure is composed of at least two parallel flow channel branches, and the cross-sectional area ratio of each branch is set in the range of 1:1.2 to 1:3. The asymmetric design of the flow channel 4 structure effectively balances the flow rate difference of each branch, ensures the uniform distribution of the cooling liquid in the flow channel, and reduces the problem of local overheating or uneven flow.
[0027] In the flow channel 4 in the heat exchange main body layer 2, alternating high and low turbulence protrusion structures 5 are further designed. The height difference of the turbulence protrusion structures 5 is set to be between 1 to 5 millimeters, and the specific height difference depends on the fluid flow rate and cooling demand. These turbulence protrusion structures 5 are arranged in a wave shape along the flow direction, causing vortex and turbulence effects during fluid flow, thereby effectively destroying the thermal boundary layer in the flow, increasing the convective heat transfer coefficient between the fluid and the heat exchange surface, and improving the heat exchange efficiency. The arrangement of the turbulence protrusion structures 5 not only improves the heat exchange efficiency between the fluid and the heat exchange surface, but also enhances the mixing effect of the fluid flow, ensuring that the temperature distribution of the cooling liquid in the flow channel is more uniform. The specific form, arrangement position and height difference of the turbulence protrusion structures 5 and other design parameters belong to the common design category of those skilled in the art, and therefore do not need to be further disclosed in detail in this application.
[0028] The heat exchange main body layer 2 and the heat insulation base layer 3 are connected by heat insulation blocks. The main function of the heat insulation blocks is to insulate the heat conduction between the bottom surface of the heat exchange main body layer 2 and the heat insulation base layer 3, prevent heat from being transmitted downward, and ensure that the heat effect of the heat exchange main body layer 2 is effectively exerted. The shape of the heat insulation base layer 3 is adapted to the shape of the bottom surface of the heat exchange main body layer 2, ensuring that it can be tightly connected and form effective thermal insulation. Specifically, the heat insulation blocks are designed in a columnar structure and are uniformly distributed between the bottom surface of the heat exchange main body layer 2 and the heat insulation base layer 3. The columnar heat insulation blocks are arranged at intervals to ensure that the flow path of the cooling liquid is not affected while maintaining good heat insulation effect.
[0029] The design of the heat insulation blocks has strong practicality and technicality, and the structure and selection of the heat insulation material belong to the known technology in the prior art, so they do not need to be further described in detail in this embodiment.
[0030] It should be noted that the high-thermal-conductivity silicone gel material of the elastic silicone gel uniform heating layer 1, the asymmetric parallel flow channel design, the wave-shaped arrangement of the turbulence protrusion structures 5 and the columnar distribution of the heat insulation blocks in this embodiment are all common technical means used by those skilled in the art in heat management systems, so they do not need to be further described, and the core innovation of the technical solution lies in the optimization of the overall structure of the heat exchange plate, the uniformity of the cooling liquid distribution, and the significant improvement of the heat exchange efficiency.
[0031] In summary, the liquid cooling flow channel energy storage heat exchange plate of the present embodiment significantly improves the heat dissipation efficiency by optimizing the hierarchical design, flow channel structure and turbulence design of the heat exchange plate, especially in high heat load equipment such as battery modules. The heat exchange plate structure not only effectively solves the problems of uneven fluid distribution and local overheating in the prior art, but also has high application value in heat management systems, especially in application scenarios such as electric vehicles and energy storage devices that have high requirements for heat dissipation.
[0032] While exemplary embodiments of the present disclosure have been described, it is to be understood that the exemplary embodiments of the present disclosure are provided by way of illustration only. Therefore, various changes and modifications can be suggested to those skilled in the art without departing from the spirit and scope of the present disclosure. Thus, all changes and modifications are intended to be included within the scope of the present disclosure as defined by the appended claims. The present disclosure is defined by the appended claims and their equivalents.
Claims
1. A liquid-cooled flow channel energy storage heat exchange plate, characterized in that, The heat exchange plate consists of, from top to bottom: an elastic silicone heat exchange layer, a heat exchange body layer with a turbulence unit, and a heat insulation base layer; the elastic silicone heat exchange layer is located on the top layer of the heat exchange plate. The elastic silicone heat exchange layer is made of high thermal conductivity silicone material. The elastic properties of silicone allow it to automatically fill the tiny gaps between the battery surface and the heat exchange plate, enhancing the consistency of the contact surface and the heat transfer efficiency. The heat exchanger body layer has flow channels, and the flow channels have an asymmetric parallel topology. In some areas of the flow channels, there are alternating high and low turbulence protrusions with a specific height difference between 1 and 5 millimeters.
2. The energy storage heat exchange plate of the liquid-cooled flow channel as described in claim 1, characterized in that, The asymmetric parallel topology includes at least two parallel flow channel branches, with the cross-sectional area ratio of each branch ranging from 1:1.2 to 1:
3.
3. The energy storage heat exchange plate of the liquid-cooled flow channel as described in claim 1, characterized in that, The turbulence protrusions are arranged in a wave-like pattern, alternating in height along the flow direction.
4. The energy storage heat exchange plate of the liquid-cooled flow channel as described in claim 1, characterized in that, The heat insulation base layer is adapted to the bottom shape of the heat exchange body and is connected and cooperated with the heat exchange body through heat insulation blocks, so that a heat insulation layer is formed between the heat insulation base layer and the bottom surface of the heat exchange body.
5. The energy storage heat exchange plate of the liquid-cooled flow channel as described in claim 4, characterized in that, The heat insulation blocks are columnar structures spaced apart between the bottom surface of the heat exchange body and the heat insulation base layer.