Single-channel sealing connection device

Abstract

The invention provides a single-channel sealing connection device and a battery pack thermal management system. The single-channel sealing connection device comprises a flange joint, a temperature sensor, a first quick plug connector and a second quick plug connector, wherein the first quick plug connector is connected with a first connecting surface of the flange joint; the second quick plug connector is connected with the second connecting surface of the flange joint; the temperature sensor is integrated on the first quick plug connector and used for detecting the temperature of liquid flowing in the first quick plug connector; and the first quick plug connector and the second quick plug connector are used for being plugged into a matched female connector on an external water pipe.

Description

technical field [0001] The invention relates to a battery heat management device, in particular to a single-channel sealed connection device for circulating heat management liquid. Background technique [0002] The battery thermal management device is an important part of the battery system, which ensures that the battery system works under optimal temperature conditions. The battery thermal management device in the prior art usually consists of an independently distributed battery thermal management internal and external communication mechanism (common name: flange sealing joint of the water pipe of the battery pack box, referred to as "flange joint") and a thermal management liquid temperature acquisition sensor. In addition, the temperature acquisition sensors are usually arranged in the manner of arranging a single temperature sensor on a single-channel pipeline. [0003] The existing structure and layout of flange joints and temperature sensors mainly have the followin...

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Problems solved by technology

Therefore, the material and manufacturing costs of existing flange joints and temperature sensors are relatively high;

[0005] 2. Due to the heat concentration of the welding process products, it is not conducive to the precision control of the key sealing surface size. It is difficult to control the compression amount of the pipeline and the rebound deformation after compression in the cold-pressed connection, resulting in a large dimensional deviation, which is not conducive to the size of the entire pipeline control;

[0006] 3. After the water temperature sensor is packaged, it is connected to the pipeline through common welding, crimping, or threaded assembly. Due to welding penetration and welding quality problems, the sealing performance and structural durability of the product cannot be perfectly guaranteed, and the factory inspection cannot Real-time detection, failure after experiencing certain working conditions; screw assembly connection method is prone to the risk of seal failure due to the manufacturing quality of on-site torque control and torque attenuation after experiencing road test conditions;

[0007] 4. A single water temperature sensor is connected in series on the single-channel pipeline, which increases the overall length of the pipeline, and the spatial arrangement of the sensors reduces the volume utilization of the scheme layout

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