Battery pack and vehicle

Abstract

The invention discloses a battery pack and a vehicle. The battery pack comprises a battery module, a protection plate and a cooling device, the battery module comprises a battery direct connection group layer; each battery direct-connection group layer at least comprises a plurality of battery direct-connection groups which are arranged side by side at intervals; each battery direct connection group comprises one or more battery cell stacks, the two first tab brackets at the same ends of the two adjacent battery direct connection groups which are arranged side by side are connected, and an accommodating space is defined between the two battery direct connection groups and the first tab brackets at the two ends; the protective plate is connected with the lower surface and/or the upper surface of the battery module, and the protective plate and the accommodating space define an accommodating groove; a liquid cooling plate in the cooling device is in thermal contact with a battery directconnection group layer and seals a containing groove, a heat conduction plate connected to the liquid cooling plate is inserted into the containing groove, and heat conduction glue is arranged betweena battery direct connection group and the heat conduction plate. The battery pack is high in heat conduction efficiency, simple in internal structure and capable of meeting the requirement for heightreduction of a battery system.

Description

technical field [0001] The invention belongs to the field of power batteries, and in particular relates to battery packs 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. [0003] 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 n...

AI Technical Summary

Problems solved by technology

[0003] 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

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