Thermal management method and device for battery pack

A management device and management method technology, applied in the field of automotive power battery thermal management, can solve problems such as insufficient heat dissipation capacity, battery temperature rise, unfavorable heat transfer, etc., achieve good thermal diffusion and temperature uniformity effect, reduce maximum temperature, excellent The effect of enhancing the heat transfer effect

CN105742753AInactive Publication Date: 2016-07-06SHANGHAI UNIV OF ENG SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-07-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a thermal management technology for power batteries, and belongs to the field of power batteries. A thermal management method for a battery pack is characterized in that a heat-conducting sleeve coating one battery is arranged outside one battery cell of the battery pack; each heat-conducting sleeve is connected with a heat-conducting pipe with a heat transfer function; and heat exchange is achieved for the batteries of the battery pack through heat transmission of the heat-conducting pipe. A device for thermal management employing the thermal management method for the battery pack is characterized by comprising the heat-conducting pipes and the heat-conducting sleeves, wherein each heat-conducting sleeve is fixedly connected with the corresponding heat-conducting pipe; each heat-conducting sleeve coats the outside of each battery cell of the battery pack; the internal sizes of the heat-conducting sleeves are matched with the external sizes of the batteries; the outer side of each heat-conducting sleeve is fixedly connected to the corresponding heat-conducting pipe; the heat-conducting pipes transmit the heat generated by the batteries through heat transmission; and heat exchange is achieved for the batteries of the battery pack. According to the thermal management method and device, the temperature adjusting effect is improved; the mechanical properties of the batteries and the thermal management device are strengthened; and the device is portable and easy to assemble.
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Description

technical field

[0001] The invention relates to the technical field of thermal management of automobile power batteries, in particular to a method and device for thermal management of a battery pack. Background technique

[0002] Power batteries such as lithium-ion batteries have high energy density, small size, and long cycle life. They have great application potential and market in electric passenger cars and commercial vehicles. However, since the temperature rise of the lithium-ion battery during charging and discharging affects its performance and cycle life, too high temperature may even cause thermal runaway, resulting in accidents such as spontaneous combustion and explosion. The temperature of the conventional lithium cobaltate cathode material battery needs to be controlled at 50 degrees Celsius. Within, to avoid thermal runaway and fire explosion, improve safety. With the advancement of battery materials and processes, although the operating temperature of batter...

Examples

Embodiment Construction

[0038] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0039] In order to solve the problem that the heat dissipation capacity of the thermal management device of the current power battery is insufficient, which is not conducive to heat transfer, resulting in a high temperature rise and a large temperature difference of the battery, the present invention proposes a thermal management method that combines a heat conduction sleeve and a heat conduction pipeline and thermal management devices.

[0040] A heat management method for a battery pack, in which a heat conduction sleeve wrapping the battery is arranged outside each battery of the battery pack, the heat conduction sleeve is connected to a heat conduction pipeline with a heat transfer function, and through the heat convection of the heat conduction pipeline, The battery of the battery pack realizes heat exchange. The heat conduction pipeline can ...