Plug, liquid cooling plate and battery box body

Abstract

The invention relates to a plug, a liquid cooling plate and a battery box body. An L-shaped channel is arranged in the plug; the L-shaped channel comprises a transverse channel and a vertical channel;the transverse channel extends forwards from the corner of the L-shaped channel to penetrate through the front end surface of the plug; a connection opening is formed in the front end surface of theplug; and the corner of the vertical channel extends downwards; an opening structure is formed in the lower surface of the plug and is provided with a downward-facing lower opening; the lower end of the vertical channel is integrally connected with the opening structure to form an open hole; one side of the opening structure is communicated with a liquid distribution cavity; the vertical channel is communicated with the liquid distribution cavity through the opening structure; and the plug comprises a cover plate used for sealing and covering the lower opening of the opening structure. Throughthe L-shaped channel, cooling liquid can enter or flow out of the liquid cooling plate in a front-back direction; the vertical channel located at a position where the flowing direction of the coolingliquid is converted is directly arranged in the plug, and therefore, higher strength is realized; and welding connection is avoided, so that the problems of weld penetration and high possibly of welding connection-induced damage are solved.

Description

technical field [0001] The invention belongs to the field of battery boxes, and in particular relates to a plug, a liquid cooling plate and a battery box. Background technique [0002] With the continuous improvement of national policies on the energy density of battery systems, the lithium iron phosphate batteries used in most commercial vehicles also need to continuously increase their energy density. In the absence of major technological breakthroughs, the current common practice is to The single cell is larger, but due to the increase in the size of the single cell, the heat dissipation area per unit is reduced, and the heat in the center of the internal center of the cell cannot be transferred quickly, resulting in poor heat dissipation performance of the cell and affecting the performance of the product. It is necessary to equip the lithium iron phosphate battery with a large battery cell with a liquid cooling plate to cool down the battery. [0003] The liquid coolin...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a plug, which is used to solve the risk of welding through the liquid distribution cavity, the risk of leakage of the adapter, and the risk of leakage at the position where the cooling liquid changes the flow direction when the water pipe joint and the plug are welded in the prior art. big technical problem

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