Soft package battery and vehicle

Abstract

The invention discloses a soft package battery and a vehicle. The soft package battery comprises a battery module and a cooling device, wherein the battery module comprises at least one battery direct-connection group layer, each battery direct-connection group layer comprises at least two battery direct-connection groups arranged side by side, each battery direct-connection group comprises one ormore battery cell stacks connected in series, and every two adjacent battery direct-connection groups arranged side by side are connected through first tab brackets at two ends of the battery direct-connection group; the cooling device comprises heat-conducting glue and a liquid cooling plate, the liquid cooling plate is a wavy curved plate or a Z-shaped zigzag plate, the liquid cooling plate isarranged between any two adjacent battery direct connection groups which are arranged side by side in each battery direct connection group layer, and the space between the battery direct connection groups and the liquid cooling plate is filled with the heat-conducting glue. According to the soft package battery, the heat conduction efficiency is improved from the arrangement mode of the liquid cooling plates and the structure of the liquid cooling plates, the cooling effect is good, and the internal structure of the battery is simpler.

Description

technical field [0001] The invention belongs to the field of power batteries, and in particular relates to soft pack batteries and vehicles. Background technique [0002] At present, liquid-cooled battery modules are widely used, and many environmental protection industries, including new energy vehicles, use liquid-cooled battery modules to provide power. Therefore, the performance of the liquid-cooled battery module directly determines the performance of the equipment using the liquid-cooled battery module as a power source. The design of the pouch battery liquid cooling system is very difficult. The heat conduction plate is often used to contact the pouch battery. One heat conduction plate contacts one cell or two cells share one heat conduction plate. The heat conduction plate guides the heat of the cell from the thickness direction of the cell. , This method not only has low heat conduction efficiency, but also increases the weight of the battery, and the more the numb...

AI Technical Summary

Problems solved by technology

The design of the pouch battery liquid cooling system is very difficult. The heat conduction plate is often used to contact the pouch battery. One heat conduction plate contacts one cell or two cells share one heat conduction plate. The heat conduction plate guides the heat of the cell from the thickness direction of the cell. , this method not only has low heat conduction efficiency, but also increases the weight of the battery, and the more the number of batteries, the more the number of heat conduction plates, and the more complicated the assembly

In addition, the current industry expects the height of battery packs to continue to decrease, but traditional pouch batteries are often assembled vertically, so the height of the module is often high, and due to various requirements such as the manufacturing process and cost of pouch batteries Unable to reduce the height, it is difficult to adapt to the requirements of the reduced height of the battery system

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