CN-224217555-U - Integrated multi-stage shunt cooling plate

Abstract

The utility model discloses an integrated multi-stage split cooling plate, which comprises a nozzle, flat pipes and collecting pipes, wherein the collecting pipes are provided with a plurality of collecting pipes, the upper collecting pipe is communicated with the lower collecting pipe through the flat pipes, after heat conduction structural adhesive is added on the flat pipes, double-layer battery cells can be cooled, compared with a cooling plate, the structure is free of a temperature equalizing plate, the weight is reduced by 3kg, the flat pipes are mutually parallel, the nozzle is provided with an inlet and an outlet, the axes of the inlet and the outlet are parallel, the same side is integrated on the nozzle, the inlet and the outlet are respectively provided with a sealing ring, the sealing tightness of connection with a system pipeline is ensured through the sealing ring design on the nozzle, the inlet and the outlet are integrated on the same nozzle, and the distribution uniformity is ensured through the structural optimization design.

Inventors

• YAN TIANHAO
• ZHANG ZHIGUO
• LI JIANJIE
• ZHOU YANCHEN
• JIANG JIANHAO
• LI YINLEI
• Liu Jiaao
• SHI SUYUN

Assignees

• 豫新汽车热管理科技有限公司

Dates

Publication Date

20260508

Application Date

20250606

Claims (5)

1. 1. The utility model provides an integrated multi-stage shunt cooling plate, including nozzle (3), flat pipe (10), the pressure manifold, wherein, the pressure manifold sets up a plurality of, superior collecting pipe passes through flat pipe (10) and lower grade collecting pipe intercommunication, increase the heat conduction structural adhesive on flat pipe (10), mutual parallel arrangement between flat pipe (10), be provided with import (1) and export (2) on nozzle (3), the axis of import (1) and export (2) is parallel, and integrate on nozzle (3) in same side, be provided with sealing washer (18) on import (1) and the export (2) respectively, primary collecting pipe passes through shunt tubes (5) and is connected with import (1) of nozzle (3), last stage collecting pipe passes through back flow (4) and is connected with export (2) of nozzle (3).
2. 2. The integrated multi-stage split cooling plate according to claim 1, wherein the collecting pipes are divided into a primary collecting pipe (13), a secondary collecting pipe (15), a tertiary collecting pipe (12), a quaternary collecting pipe (16), a penta collecting pipe (14), a hexa collecting pipe (9) and a hepta collecting pipe (17), two collecting pipes are arranged at each stage, two split pipes (5) and two return pipes (4) are arranged at each stage, and the split pipes (5) and the return pipes (4) are fixed with the collecting pipes in a welding mode.
3. 3. The integrated multi-stage flow distribution cooling plate according to claim 2, wherein the five-stage flow collecting pipe (14) and the seven-stage flow collecting pipe (17) are jointly arranged on the same pipeline, the pipeline is arranged into a flow collecting long pipe I (6), a partition plate (8) is arranged inside the flow collecting long pipe I (6), the flow collecting long pipe I (6) is divided into the five-stage flow collecting pipe (14) and the seven-stage flow collecting pipe (17) by the partition plate (8), the two-stage flow collecting pipe (15) and the four-stage flow collecting pipe (16) are jointly arranged on the same pipeline, the pipeline is arranged into a flow collecting long pipe II (7), the partition plate (8) is arranged inside the flow collecting long pipe II (7), the flow collecting long pipe I (6) is divided into a two-stage flow collecting pipe (15) and a four-stage flow collecting pipe (16), the three-stage flow collecting pipe (12) and the one-stage flow collecting pipe (13) are respectively welded and fixed with the flow collecting long pipe I (6), and the six-stage flow collecting pipe (9) and the flow collecting long pipe II (7) are welded and fixed.
4. 4. An integrated multi-stage split cooling plate according to claim 1, wherein the internal baffle (8) of the header has a split ratio in the range of 3:7 to 7:3.
5. 5. The integrated multi-stage split cooling plate according to claim 1, wherein the first collecting tube (6) and the second collecting tube (7) are respectively provided with a support (11) with holes.

Description

Integrated multi-stage shunt cooling plate Technical Field The utility model relates to the technical field of battery pack cooling plates, in particular to an integrated multi-stage shunt cooling plate. Background With the wide application of new energy automobiles, the safety and service life of a core component, namely a power battery, become important measurement standards of the performance and quality of the whole automobile. The power battery can generate a large amount of heat in the charge and discharge process, and if the battery is not cooled timely or is cooled unevenly, the temperature difference of the battery core is overlarge, so that the problems of thermal runaway, battery core performance degradation, system efficiency reduction and the like are further caused. Therefore, the development of a cooling device with compact structure, high heat exchange efficiency and good cooling uniformity becomes one of the key tasks in the heat management design of the battery pack. Currently, common battery cooling techniques include coolant-flowing cold plates, evaporative cold plates, phase change material auxiliary structures, and the like. Among them, the flow type cold plate is widely used due to its structural controllability and heat exchange stability. The conventional flow type cold plate generally adopts a single flow channel structure, and the cooling liquid is introduced into a plurality of micro-channels in the cold plate for heat exchange in a single-inlet single-outlet split flow mode. However, the structure has the common problems that the flow distribution is uneven, the pressure gradient difference is easy to generate when the refrigerant flows through a plurality of paths by a single flow passage structure, the distribution of the cooling liquid in different paths is uneven, the temperature difference of a battery core exceeds 5 ℃, the consistency of the battery core and the safety of a system are reduced, the structure is complex, the occupied space is large, and the sealing treatment of a plurality of welding points and interfaces is required due to the structural redundancy, so that the material cost is increased, and the leakage risk and the maintenance difficulty are also improved. Patent document No. CN114497826a proposes an integrated multifunctional double-layer cooling structure, which has certain advantages of heat dissipation and structural integration. However, the scheme still has the following defects of lack of fine distribution capability, difficulty in adapting to the working condition of uneven interlayer heat flow, multiple interfaces, structural redundancy, complex sealing, difficult assembly and large overall weight, and is unfavorable for realizing the light weight of the vehicle. In summary, the prior art has not yet provided a cooling plate structure with high integration level, good cooling uniformity, light weight, low cost and convenient system connection, and therefore an integrated multi-stage split cooling plate is provided to solve the above problems. Disclosure of utility model The utility model aims to overcome the existing defects, provides an integrated multi-stage split cooling plate, realizes the improvement of cooling uniformity, the enhancement of structural integration level and the light weight of the whole plate, remarkably improves the efficiency and the adaptability of a power battery thermal management system, and can effectively solve the problems in the background art. The integrated multi-stage split cooling plate comprises a nozzle, flat pipes and collecting pipes, wherein the collecting pipes are arranged in a plurality, the upper collecting pipe is communicated with the lower collecting pipe through the flat pipes, after heat conduction structural adhesive is added on the flat pipes, double-layer electric cores can be cooled, compared with a cold plate, the structure is free of a temperature equalizing plate, the weight is reduced by 3kg, the flat pipes are mutually parallel, an inlet and an outlet are arranged on the nozzle, the axes of the inlet and the outlet are parallel, the inlet and the outlet are integrated on the same side of the nozzle, sealing rings are respectively arranged on the inlet and the outlet, the tightness of connection with a system pipeline is ensured through the design of the sealing rings on the nozzle, the inlet and the outlet are integrated on the same nozzle, and the distribution uniformity is ensured through the design of structural optimization. Furthermore, the collecting pipe is divided into a first-stage collecting pipe, a second-stage collecting pipe, a third-stage collecting pipe, a fourth-stage collecting pipe, a fifth-stage collecting pipe, a sixth-stage collecting pipe and a seventh-stage collecting pipe, two collecting pipes are arranged at each stage of collecting pipe respectively, and two shunt pipes and two return pipes are arranged at each stage of collecting pipe respectively and fixed thro