Liquid-cooled fixing structure for battery system

Abstract

The invention discloses a liquid-cooled fixing structure for a battery system. The liquid-cooled fixing structure comprises an upper water cooling plate and a lower water cooling plate, wherein the upper water cooling plate and the lower water cooling plate are arranged up and down and are connected with each other, each of the interior of the upper water cooling plate and the interior of the lower water cooling plate is provided with a medium flow passage for a cooling medium to flow, and the medium flow passage inside the upper water cooling plate communicates with the medium flow passage inside the lower water cooling plate to form a circuit; lower installation bases fixed to two sides of the lower water cooling plate are arranged on two sides of the lower water cooling plate, the lower installation bases on the two sides are matched with each other, a lower installation surface for a battery module to install is formed above the lower water cooling plate, and a lower fixing mechanism for fixing the battery module is arranged on the lower installation surface. According to the liquid-cooled fixing structure, a fixing device and a cooling device of the battery module are combined into one, the maximum utilization of system inner space is realized, the lightweight requirement of the system is met, and simultaneously the reliability requirement of the structure is further met.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power battery system PACK, in particular to a liquid-cooled fixing structure for a battery system. Background technique [0002] The development of new energy vehicles is an established national policy of our country. The plug-in hybrid vehicle PHEV is favored by more and more consumers due to its advantages of being rechargeable and not limited to the cruising range. PHEV has higher requirements for its supporting power battery system than pure electric EV. It will require the battery system to withstand a larger charge and discharge rate, and more effective thermal management, especially the heat dissipation system. The battery liquid cooling method with the advantages of rapid heat dissipation and real-time temperature control is being more and more used in PHEV power battery systems. However, liquid cooling systems also have their inherent disadvantages. First of all, the liquid co...

AI Technical Summary

Problems solved by technology

However, liquid cooling systems also have their inherent disadvantages

First of all, the liquid cooling system requires an additional liquid cooling device, which takes up more space in the battery pack, thereby reducing the total number of batteries that can be arranged in the system

In addition, the arrangement of the liquid cooling system will increase the total weight of the system, which is not conducive to lightweight, and has a negative effect on the improvement of the energy density of the system

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