Thermal management device suitable for online monitoring equipment power supply

Abstract

The invention relates to a thermal management device suitable for an online monitoring equipment power supply. Multiple lead-acid storage batteries are arranged in a shell at intervals. A sealing cover is hermetically arranged at an opening at the upper end of the shell. Electrodes arranged on the sealing cover are connected with the pole plates of the lead-acid storage batteries. A cavity formedby the shell and the sealing cover is filled with sulfur hexafluoride gas. In the invention, the environment temperature for battery operation is more linear, and the capacity attenuation of batteriesis reduced. Accidents such as cracking, combustion and explosion caused by thermal runaway of batteries are avoided. Because the sulfur hexafluoride gas has the characteristics of arc extinguishing,insulation and the like, spark discharge of batteries, poor contact caused by pole oxidation and the like can be avoided. After the cavity is filled with sulfur hexafluoride, the specific heat capacity of the environment medium around batteries is improved. Each temperature rise of 1 DEG C caused by heat dissipation of a battery under the original condition of exposure in the air is equivalent toa temperature rise of 0.25 DEG C in the power supply disc under the condition that the cavity is filled with sulfur hexafluoride, and temperature drop is the same. Therefore, the fluctuation of the environment temperature for battery operation can be reduced, and the change is more linear.

Description

Technical field [0001] The invention belongs to the technical field of battery thermal management, in particular to a thermal management device suitable for on-line monitoring of equipment power. Background technique [0002] Temperature has a great influence on the capacity, power and safety of the battery. Compared with the power battery system, the online monitoring equipment power supply has objective factors such as large operating temperature difference and harsh environment. A large number of battery packs are closely arranged in a space, and the operating conditions are complex and changeable, sometimes with high magnification and sometimes low magnification. This easily causes problems such as uneven heat generation, uneven temperature distribution, and large temperature differences between batteries. If things go on like this, it will inevitably lead to a decline in the charge and discharge performance, capacity and life of some batteries, which will affect the perfor...

AI Technical Summary

Problems solved by technology

This is likely to cause problems such as uneven heat generation, uneven temperature distribution, and large temperature differences between batteries.

If things go on like this, it will inevitably lead to a decline in the charge and discharge performance, capacity and life of some batteries, which will affect the performance of the entire system. In severe cases, it will cause thermal runaway and cause accidents.

At present, the thermal management technologies (air cooling; liquid cooling; heat pipe cooling; phase change cooling) that can be used in the battery thermal management system are more suitable for large-scale energy storage systems, but not suitable for distributed energy storage batteries such as online monitoring equipment power supply

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