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Lithium ion power battery box

A power battery and lithium-ion technology, applied in the field of lithium-ion power battery boxes, can solve the problem of uneven distribution of cooling capacity, achieve the effects of increased circulation resistance, improved discharge performance and life, and smooth circulation

Active Publication Date: 2015-03-25
CALB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a lithium-ion power battery box to overcome the problem of uneven distribution of cooling capacity in various parts of the battery box when the cooling air is cooled along a single cooling air channel in the prior art

Method used

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Examples

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Embodiment Construction

[0026] An embodiment of a lithium ion power battery box of the present invention: as Figure 1 to Figure 5As shown, the lithium-ion power battery box includes a battery box surrounded by a front side plate 1, a rear side plate 4, a left side plate 6, a right side plate 5, a bottom plate 3 and a cover plate 2, and the front side plate is along the vertical direction A basic air duct fan 13 and an enhanced cooling air duct fan 12 are arranged at intervals in sequence, two air outlets 30 are arranged at intervals along the up and down direction on the rear side plate, and a basic air duct fan 13 is arranged in the battery box close to the front side plate and parallel to the front side plate. Deflector 15, the deflector of the basic air duct is provided with guide holes 16 for dispersing and diverting the cooling air blown in from the fan of the basic air duct, and cooling air is provided at 3 places slightly higher than the bottom plate in the battery box. Road cover plate, cool...

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Abstract

The invention relates to a lithium ion power battery box, which comprises a battery box body for alternately arranging batteries inside the body along a set arrangement direction, and a base air channel arranged in the battery box body, wherein the flow direction of the base air channel is consistent with the set arrangement direction; the battery box is also provided with a reinforced cooling air channel for delivering cooling air separated from the base air channel; the reinforced cooling air channel is provided with jet holes for directing the cooling air into a set cooling area in the battery box body; and the cooling area is a gap between front and back adjacent batteries along the battery arrangement direction in set positions or batteries in the set positions. By adopting the lithium ion power battery box, the problem in the prior art that cooling capacity distribution in various parts in the battery box body is non-uniform because the batteries are successively cooled along a single base air channel is solved; and the lithium ion power battery box of the invention can uniformly cool the batteries and improve the overall discharge performance and the service life of the batteries in the battery box.

Description

technical field [0001] The invention relates to a battery box, in particular to a lithium ion power battery box. Background technique [0002] With the development of lithium-ion batteries with large cell capacity and high specific energy, the exothermic effect of chemical reaction heat and resistance heat generated by the charging and discharging of lithium-ion power battery boxes is more significant, resulting in a significant increase in the temperature in the battery cabinet. The performance and life of lithium-ion power batteries are closely related to their working environment temperature. Studies have shown that after 800 cycles of lithium-ion batteries at 25°C and 45°C, the battery capacity drops by 31% and 36% respectively; the battery runs at 50°C for 600 cycles. After cycling, the battery capacity drops by 60%, and the battery capacity drops by 70% after 500 cycles at 55°C. The increase in temperature not only greatly affects the performance and service life of l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M2/10H01M10/613H01M10/627H01M10/6556H01M10/6566H01M10/6563
CPCY02E60/10
Inventor 虞跨海程永周李长浩杨茜张洁谢秋
Owner CALB CO LTD
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