Aluminum profile and heat dissipation device for battery pack heat dissipation

Abstract

This application discloses an aluminum profile and heat dissipation device for battery pack heat dissipation, belonging to the field of battery heat dissipation technology. The aluminum profile includes a main body with T-grooves on its left and right sides for sliding fit with T-shaped blocks of the battery pack. Inside, there is a rectangular coolant channel extending along its length, near the battery pack side. Parallel wire grooves are arranged on one side of the coolant channel. The interior also includes a multi-stage heat dissipation trough assembly, including a symmetrically arranged directional first heat dissipation trough, a central circular second heat dissipation trough, a third heat dissipation trough below it, and rectangular fourth and fifth heat dissipation troughs on the left and right sides. This application integrates an active liquid cooling channel with a passive multi-stage heat dissipation trough assembly, achieving efficient and uniform heat dissipation from multiple sides of the battery pack. It also integrates mechanical installation and wiring harness management functions, solving the problems of single function, uneven heat dissipation, and low integration in existing heat dissipation structures. It has the advantages of high heat dissipation efficiency, compact structure, and convenient assembly.

Description

Technical Field

[0001] This application relates to the field of battery pack heat dissipation, and in particular to an aluminum profile and heat dissipation device for battery pack heat dissipation. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage systems, the energy density and power density of power batteries are constantly increasing, and the heat generated during battery charging and discharging is also increasing. Excessive battery temperature can seriously affect its cycle life, safety performance, and charging and discharging efficiency. Therefore, an efficient thermal management system has become a key technology to ensure the long-term stable operation of battery packs.

[0003] Currently, common battery cooling methods mainly include air cooling and liquid cooling. Liquid cooling is widely used due to its high heat dissipation efficiency and good temperature uniformity. Existing liquid cooling plates are mostly made of extruded aluminum profiles, with internal cooling channels, and exchange heat through contact with the battery module surface. For example, Chinese patent CN207868347U discloses an extruded aluminum profile water-cooled plate, which increases the heat exchange area by setting heat exchange protrusions in the channels and toothed protrusions on the plate surface. However, this type of structure still has certain limitations: on the one hand, its heat dissipation structure is mainly concentrated on one side or in a planar arrangement, making it difficult to achieve uniform heat dissipation on multiple sides of the battery pack; on the other hand, existing profiles often have a single function and lack integrated design with the battery pack installation structure (such as T-slots) and wiring harness management structure, resulting in low overall structural utilization and high assembly complexity. Utility Model Content

[0004] The purpose of this application is to provide a battery pack heat dissipation profile structure with high integration, excellent heat dissipation performance and easy installation, so as to solve the problems of uneven heat dissipation and single structural function in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An aluminum profile for heat dissipation of a battery pack includes a profile body; T-shaped grooves on the left and right sides of the profile body for sliding engagement with T-shaped blocks of the battery pack; coolant channels are provided inside the profile body, extending along the length direction and symmetrically arranged near the battery pack; wire grooves are provided inside the profile body on one side of the coolant channels; a multi-stage heat dissipation groove assembly is provided inside the profile body, including: a first heat dissipation groove symmetrically arranged; a second heat dissipation groove located at the center line of the profile body; a third heat dissipation groove located below the second heat dissipation groove; a fourth heat dissipation groove located on the left and right sides of the third heat dissipation groove; and a fifth heat dissipation groove located on the left and right sides of the fourth heat dissipation groove; the profile body achieves heat dissipation from the four sides of the battery pack through the coolant channels and the multi-stage heat dissipation groove assembly.

[0007] Furthermore, the coolant flow channel is arranged to run through the length of the profile body and has a rectangular cross-section.

[0008] Furthermore, the cable tray is arranged parallel to the coolant flow channel to accommodate the battery pack wiring harness.

[0009] Furthermore, the first heat sink, the second heat sink, the third heat sink, the fourth heat sink, and the fifth heat sink together constitute a multi-level heat dissipation structure.

[0010] Furthermore, the T-slot is continuously provided along the entire length of the profile body.

[0011] Furthermore, the main body of the profile is made of aluminum alloy or thermally conductive composite material through an extrusion molding process.

[0012] A battery pack heat dissipation device includes an aluminum profile and a battery pack module installed by a T-block and a T-slot.

[0013] Furthermore, a thermally conductive silicone layer is provided between the battery pack module and the profile body.

[0014] The beneficial effects of this application are as follows:

[0015] (1) This utility model integrates the advantages of active liquid cooling and passive air cooling by integrating coolant channels and multi-level heat dissipation grooves in the main body of the profile. The coolant channels are responsible for actively dissipating the main heat, while the multi-level heat dissipation grooves composed of the first to fifth heat dissipation grooves greatly increase the heat dissipation surface area of ​​the profile. Through its specific symmetrical and hierarchical layout, it optimizes air convection and significantly improves heat dissipation efficiency, overcoming the defects of existing technologies, such as the heat dissipation structure mainly concentrated on a single plane, which makes it difficult to uniformly dissipate heat from multiple sides of the battery pack.

[0016] (2) This utility model integrates the T-slot sliding installation structure, coolant flow channel, wire channel, and multi-stage heat dissipation structure into a single extruded profile. The T-slot enables quick, stable, and slidable modular installation with the battery pack; the independent wire channel provides a neat layout space for the battery pack's wiring harness, avoiding interference between the wiring harness and the heat dissipation structure. This highly integrated design greatly simplifies the overall structural layout of the battery pack, reduces the number of parts and assembly steps, and improves production efficiency and system reliability.

[0017] In summary, this utility model not only significantly improves heat dissipation performance, but also effectively solves problems such as space layout, ease of installation, and wiring harness management in battery pack system integration, combining excellent practicality and economy. Attached Figure Description

[0018] Figure 1A cross-sectional view of an aluminum profile for heat dissipation of a battery pack provided in an embodiment of this application;

[0019] Figure 2 A three-dimensional structural schematic diagram of an aluminum profile for heat dissipation of a battery pack provided in an embodiment of this application;

[0020] Figure 3 A schematic diagram of the structure of an aluminum profile for heat dissipation of a battery pack installed on a battery pack, according to an embodiment of this application;

[0021] Explanation of reference numerals in the attached figures:

[0022] A. Battery pack;

[0023] 1. Profile body; 2. T-slot; 3. Coolant flow channel; 4. Cable tray; 5. First heat dissipation slot; 6. Second heat dissipation slot; 7. Third heat dissipation slot; 8. Fourth heat dissipation slot; 9. Fifth heat dissipation slot; Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," etc., are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In particular, the understanding of the term "upper" following a noun in the claims should be understood as meaning that the entire inner and outer surfaces of the structure referred to by the noun conform to the definition of "upper."

[0026] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structures, features, and effects provided in this application.

[0027] like Figures 1 to 3As shown, an aluminum profile for heat dissipation of battery pack A includes a profile body 1; T-shaped grooves 2 are provided on the left and right sides of the profile body 1 for sliding fit with T-shaped blocks of battery pack A; a coolant channel 3 is provided inside the profile body 1, the coolant channel 3 is located on the side near battery pack A, extends along the length direction and is symmetrically arranged; a wire groove 4 is provided inside the profile body 1, located on one side of the coolant channel 3; a multi-level heat dissipation groove group is provided inside the profile body 1, including: a first heat dissipation groove 5 symmetrically arranged; a second heat dissipation groove 6 located at the center line of the profile body 1; a third heat dissipation groove 7 located below the second heat dissipation groove 6; a fourth heat dissipation groove 8 located on the left and right sides of the third heat dissipation groove 7; and a fifth heat dissipation groove 9 located on the left and right sides of the fourth heat dissipation groove 8; the profile body 1 achieves heat dissipation on the four sides of battery pack A through the coolant channel 3 and the multi-level heat dissipation groove group.

[0028] Furthermore, the coolant flow channel 3 is provided to extend along the length of the profile body 1, and its cross-section is rectangular.

[0029] Furthermore, the wire groove 4 is arranged parallel to the coolant flow channel 3 to accommodate the battery pack A wiring harness.

[0030] Furthermore, the first heat dissipation slot 5, the second heat dissipation slot 6, the third heat dissipation slot 7, the fourth heat dissipation slot 8, and the fifth heat dissipation slot 9 together constitute a multi-level heat dissipation structure. By combining heat dissipation slots of different shapes, positions, and symmetrical distribution, the heat dissipation surface area is maximized within a limited space, and effective heat conduction paths and air convection channels are formed, achieving a synergistically enhanced passive heat dissipation effect.

[0031] Furthermore, the T-slot 2 is continuously provided along the entire length of the profile body 1.

[0032] Furthermore, the profile body 1 is made of aluminum alloy or thermally conductive composite material through an extrusion molding process.

[0033] A heat dissipation device for a battery pack A includes an aluminum profile and a battery pack A module installed by a T-block and a T-slot 2.

[0034] Furthermore, a thermally conductive silicone layer is provided between the battery pack A module and the profile body 1. This fills the microscopic gaps between the battery pack A and the profile contact surface, eliminates air, significantly reduces contact thermal resistance, and ensures that heat can be more efficiently conducted from the battery pack A to the cooling profile.

[0035] The working principle of this application is as follows:

[0036] During operation, the heat generated by battery pack A is first conducted to the profile body 1 in contact with it. The coolant channel 3 located within the profile body 1, near battery pack A, is the core of the active heat dissipation system. A cooling pump drives the coolant to continuously circulate within the channel, flowing along the entire length of the profile. According to thermodynamic principles, heat spontaneously transfers from the high-temperature profile wall to the low-temperature coolant, and the flow of the liquid continuously carries away the heat, thus achieving basic and efficient cooling of battery pack A. The symmetrical arrangement of the coolant channels 3 ensures the uniformity of the temperature field on both sides of the profile and the contact surface with battery pack A, preventing localized overheating.

[0037] The multi-level heat dissipation channel group (first to fifth heat dissipation channel 9) constitutes the main body of passive heat dissipation. These heat dissipation channels (directional, circular, rectangular, etc.) form a complex three-dimensional structure inside the profile, and their core function is to greatly increase the effective surface area in contact with the surrounding air within the limited profile cross-section.

[0038] When an electric vehicle is in motion or there is airflow around the battery system, air flows through the interior and openings of these heat sinks. Cool air comes into contact with the hot heat sink walls and exchanges heat. The heated air rises and is expelled, while cool air continues to replenish, creating natural convection or forced convection from the vehicle's movement, continuously dissipating excess heat from the profile into the environment.

[0039] Heat is conducted from the heat source (the mounting side of battery pack A) to all directions inside the profile through the high thermal conductivity of the aluminum material. The specific layout of the multi-level heat dissipation channels (such as center, bottom, and left-right symmetry) establishes an efficient heat flow path from the heat source to the external environment, ensuring that heat can be quickly conducted out and dissipated from the inside.

[0040] T-slot 2 not only provides sliding assembly functionality with the AT-type block of the battery pack, but its tight metal-to-metal fit also ensures a reliable heat conduction path with extremely low thermal resistance between the battery pack A and the profile. The wire channel 4 neatly houses the wiring harnesses (such as sensor wires and communication lines) of the battery pack A in an independent cavity, physically isolating them from the coolant flow channel 3 and heat dissipation slots, thus preventing the wiring harnesses from aging due to heat and avoiding obstruction of airflow, ensuring the safety and reliability of the system.

[0041] In summary, this utility model actively removes most of the heat through the coolant flow channel 3, and passively dissipates the remaining heat and enhances the overall heat capacity through the multi-stage heat dissipation tank assembly. At the same time, it integrates mechanical installation and wiring harness management functions, which work together to achieve efficient, uniform and reliable temperature control on multiple sides of the battery pack A.

[0042] The embodiments described above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. An aluminum profile for heat dissipation of a battery pack, characterized by, The profile body comprises: T-shaped grooves arranged on the left and right sides of the profile body, used for sliding fit installation with T-shaped blocks of the battery pack; A cooling liquid flow channel is arranged in the profile body, which is close to one side of the battery pack, extends along the length direction and is symmetrically arranged; A wire slot is arranged in the profile body, which is located on one side of the cooling liquid flow channel; A multi-stage heat dissipation groove group is arranged in the profile body, which comprises: Symmetrically arranged first heat dissipation grooves; Second heat dissipation grooves located at the center line of the profile body; Third heat dissipation grooves located below the second heat dissipation grooves; Fourth heat dissipation grooves located on the left and right sides of the third heat dissipation grooves; Fifth heat dissipation grooves located on the left and right sides of the fourth heat dissipation grooves; 2. The aluminum profile for heat dissipation of a battery pack according to claim 1, characterized in that, The profile body realizes heat dissipation of four sides of the battery pack through the cooling liquid flow channel and the multi-stage heat dissipation groove group.

3. The aluminum profile for heat dissipation of a battery pack according to claim 1, characterized in that, The cooling liquid flow channel is arranged through along the length direction of the profile body, and the cross section is rectangular.

4. The aluminum profile for heat dissipation of a battery pack according to claim 1, characterized in that, The wire slot is arranged in parallel with the cooling liquid flow channel, used for accommodating the wire harness of the battery pack.

5. The aluminum profile for heat dissipation of a battery pack according to claim 1, characterized in that, The first heat dissipation grooves, the second heat dissipation grooves, the third heat dissipation grooves, the fourth heat dissipation grooves and the fifth heat dissipation grooves jointly constitute a multi-stage heat dissipation structure.

6. The aluminum profile for heat dissipation of a battery pack according to claim 1, characterized in that, The T-shaped grooves are continuously arranged along the full length of the profile body.

7. A battery pack heat dissipation device, characterized in that, The profile body is made of aluminum alloy or heat-conducting composite material through extrusion molding process.

8. The battery pack heat sink device of claim 7, wherein, The aluminum profile comprises: The battery pack module is installed through the cooperation of the T-shaped blocks and the T-shaped grooves. A heat-conducting silica gel layer is further arranged between the battery pack module and the profile body.

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