Temperature control composite clamping plate for high-expansion-rate lithium ion battery pack

Abstract

The embodiment of the invention provides a temperature control composite clamping plate for a high-expansion-rate lithium ion battery pack, which is characterized by comprising a clamping plate (1), a heat conducting plate (2), a rigid foam plate (3), a heating belt (4), a leveling plate (5), a pull belt (6) and a temperature probe (7), wherein the pull belt (6), the clamping plate (1), the heat conducting plate (2), the heating belt (4), the rigid foam plate (3) and the leveling plate (5) are sequentially bonded and formed; the leveling plate (5) is fixedly connected with a cell stack in the clamped expansion rate lithium ion battery pack; the pull belt (6) is fixedly connected with a pull wire, a pull belt or a pull plate of the clamped expansion rate lithium ion battery pack; and the temperature probe (7) is sealed in a probe mounting groove in a non-stress area at the top of the rigid foam plate (3) through glue, and the temperature probe (7) is connected with the heat conducting plate (2) after being filled with glue, is not in contact with a heating area of the heating belt and is used for measuring the temperature of the heat conducting plate.

Description

technical field [0001] The invention belongs to the battery-related technical field, and relates to a temperature-controlled composite splint for a lithium-ion battery pack with a high expansion rate. Background technique [0002] With the gradual maturity of lithium ion battery technology with high specific energy such as metal lithium secondary battery and silicon carbon secondary battery, the specific energy of metal lithium secondary battery is as high as 450Wh / kg or more, and even higher than 530Wh / kg . However, metal lithium secondary batteries lack space for lithium ion intercalation compared with traditional graphite anode materials, so there will be significant volume expansion during charging, especially for metal lithium batteries with square flexible packaging, whose thickness expansion is generally as high as 8%. When the metal lithium secondary battery expands, it will cause a huge deformation of the module structural parts, generate a huge external extrusion ...

AI Technical Summary

Problems solved by technology

[0003] CN108054315A "square lithium-ion battery pack for space", CN205810901U "soft pack power battery module", CN10906577A "a lithium-ion battery pack for a light-weight design launch vehicle" all adopt a single splint for fixing, but do not involve composite splints Structure and temperature control measures for splint heating

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