Rapid low-cost lithium ion battery charging and discharging heat production measuring device

By optimizing the structure and component configuration of the charging and discharging thermal measurement device of lithium-ion battery, the complex, costly and cumbersome problems in the prior art are solved, and fast, low-cost and high-precision thermal measurement is achieved, which is suitable for different Thermal measurement of lithium-ion batteries under operating conditions.

CN119165003APending Publication Date: 2024-12-20BEIHANG UNIV
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Patent Information

Application Number
CN202411365125.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2024-12-20

AI Technical Summary

Technical Problem

The existing lithium-ion battery thermal measurement devices are complex, have long measurement time, high cost and cumbersome correction, making it difficult to ensure accuracy and temperature uniformity, affecting battery performance evaluation and thermal management design.

Method used

A fast and low-cost lithium-ion battery charging and discharging thermal measurement device consisting of thermal insulation components, temperature control components, stirring components, temperature measurement components, battery fixtures, liquid media and calibration components is designed, and the vacuum jacket layer and heating jacket layer are passed through the vacuum jacket layer and the heating jacket layer. , mixer, multiple high-precision temperature sensors, liquid media and standard sample correction components, optimize structure and component configuration, simplify operational processes and reduce equipment costs.

Benefits of technology

Significantly reduces measurement costs, simplifies the operation process, improves measurement accuracy, ensures temperature uniformity and data accuracy, is suitable for thermal measurement of lithium-ion batteries under different working conditions, and reduces data errors and device heat capacity measurements. Effects of results.

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Abstract

The invention provides a rapid and low-cost lithium ion battery charging and discharging heat production measuring device, and aims to simplify the measuring process and improve the efficiency. The device is composed of a heat insulation assembly, a temperature control assembly, a stirring assembly, a temperature measurement assembly, a battery clamp, a liquid medium, a reaction container and a correction assembly. A heat insulation environment is formed through the vacuum jacket layer and the vacuum pump, and external thermal interference in the testing process is minimum. The temperature control assembly controls the temperature of the liquid medium through the heating jacket layer and the heating wire, and the stirring assembly ensures uniform distribution of the temperature of the liquid medium. The temperature measuring assembly monitors the temperature changes of the liquid medium and the battery in real time, the effective heat capacity of the device is corrected through the correction assembly by using a standard sample, and the influence of the heat capacity of the device on the measurement result is eliminated. The device is simple in structure and easy to operate, can shorten the test time on the premise of ensuring the measurement precision, remarkably reduces the test cost, and is widely applicable to thermal management design and performance evaluation of the lithium ion battery.
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