Battery module heat conduction structure and battery module
A heat-conducting structure and battery module technology, applied in the field of battery energy storage, can solve problems such as the structure that does not conform to the anisotropy of battery modules, reduce service life, reduce charging and discharging efficiency, etc., so as to improve cruising range and thermal management safety. performance, improve system efficiency and life, and improve the effect of charging and discharging efficiency
Pending Publication Date: 2020-11-10
JIANGSU TIANHE ENERGY STORAGE CO LTD
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Problems solved by technology
The heat conduction sheet / plate generally has the same thermal conductivity. This uniform heat conduction design does not conform to the complex anisotropic structure of the battery module, and cannot meet the temperature uniformity and temperature control requirements under various operating conditions, and often occurs in the middle of the module. The temperature is high, and the temperature at both ends and edges of the module is low
Inconsistent battery temperature will lead to inconsistent battery status, reduce charge and discharge efficiency, and reduce service life
Method used
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Embodiment Construction
[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
[0024] Such as figure 1 As shown, a battery module heat conduction structure includes several batteries 1 and heat conduction sheets 2 arranged alternately. The heat conduction sheets are in good contact with the batteries to form alternate stacks. Several heat conduction sheets 2 have at least two or more thermal conductivity coefficients. That is, at least two thermal conduction sheets 2 have different thermal conductivity, and the positions of the two thermal conduction sheets 2 with different thermal conductivity are different in the structure. The battery 1 can be a lithium iron phosphate battery.
[0025] The thermal conductivity of the heat conduction sheet 2 is 0.1-5...
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Abstract
The invention belongs to the technical field of battery energy storage, and particularly relates to a battery module heat conduction structure and a battery module. The battery module heat conductionstructure comprises a plurality of alternately arranged batteries and heat conduction sheets, and the plurality of heat conduction sheets at least have more than two heat conduction coefficients. Theworking temperature of the battery in the battery module is more balanced, the charging and discharging efficiency of the battery module is improved, and the service life is prolonged.
Description
technical field [0001] The invention belongs to the technical field of battery energy storage, and relates to a heat conduction structure of a battery module and the battery module. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, high charge-discharge conversion efficiency, and long life. They are widely used in electric vehicles, power energy storage, communication base stations, and backup power supplies. The rated voltage of the single battery is low (for example, the rated voltage of the lithium iron phosphate battery is 3.2V, and the ternary lithium battery is 3.7V), and the capacity is small (several to hundreds of Ah). In different applications, single lithium batteries need to be grouped in series, parallel or hybrid interconnection to achieve sufficient DC side voltage and system capacity. [0003] Temperature is an important factor affecting the performance and life of Li-ion batteries and battery modules. The capac...
Claims
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IPC IPC(8): H01M10/6555H01M10/617H01M10/625H01M10/627H01M10/647H01M10/6563H01M10/6567H01M10/0525
CPCH01M10/6555H01M10/617H01M10/625H01M10/627H01M10/647H01M10/6563H01M10/6567H01M10/0525H01M2220/10H01M2220/20Y02E60/10
Inventor 盛赟卞铁铮冯志强戴忠梁张臻
Owner JIANGSU TIANHE ENERGY STORAGE CO LTD