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High-thermal-conductivity lithium battery pack for underwater vehicle

A technology for underwater vehicles and lithium battery packs, applied to lithium batteries, battery pack parts, non-aqueous electrolyte batteries, etc., can solve problems such as ineffective effects, lower battery pack temperature, low heat dissipation efficiency, etc. Cross-sectional utilization, guaranteed energy density, and improved reliability

Pending Publication Date: 2021-12-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problem that the traditional heat dissipation scheme for the battery cabin section of the underwater vehicle has low heat dissipation efficiency and no obvious effect, and cannot effectively reduce the temperature of the battery pack in a short time, the present invention provides a high-efficiency cooling system for the underwater vehicle. Thermally conductive lithium battery pack

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  • High-thermal-conductivity lithium battery pack for underwater vehicle
  • High-thermal-conductivity lithium battery pack for underwater vehicle

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing.

[0034] Such as figure 1 As shown, the high thermal conductivity lithium battery pack for underwater vehicles provided by the present invention includes multi-layer battery modules, and the battery modules of each layer are connected in series and / or in parallel, and are arranged in sequence along the battery height direction.

[0035] The single-layer battery module includes a plurality of series and / or parallel cylindrical lithium batteries 3, two battery racks 4 and a cell management unit 2; the cylindrical lithium batteries 3 are arranged in multiple circles from the center of the battery compartment to the outer wall; The battery rack 4 is used to carry and fix the cylindrical lithium battery 3; the end surface of the battery rack 4 is provided with a positioning hole, and each cylindrical lithium battery 3 is fixed through the positioning hole; the cell management unit...

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Abstract

In order to solve the technical problems that a traditional heat dissipation scheme of a battery cabin section of an underwater vehicle is low in heat dissipation efficiency and not obvious in effect, and the temperature of the battery pack cannot be effectively reduced in a short time, the invention provides the high-thermal-conductivity lithium battery pack for the underwater vehicle. According to the invention, the gaps inevitably formed when the cylindrical lithium batteries are arranged are effectively utilized, the gaps are filled with the high-heat-conduction and insulating heat-conduction gap filling material, and heat in the centers of the batteries can be rapidly conducted to the inner wall of the shell of the battery cabin section through the heat-conduction material, so the heat is further conducted to low-temperature seawater outside the battery cabin section, and the purpose of rapid cooling is achieved; the periphery of each cylindrical lithium battery is filled with the heat conduction gap filling material, so that the temperature uniformity can be well ensured; meanwhile, the central gap formed by the cylindrical lithium battery on the innermost ring is reasonably utilized, the central tube is arranged in the central gap, and the central tube is filled with the high-heat-absorption composite material, so heat generated by the battery pack can be quickly and effectively absorbed, and the temperature of the battery pack is reduced.

Description

technical field [0001] The invention relates to a lithium battery pack with high thermal conductivity for an underwater vehicle. Background technique [0002] At present, the driving power energy of underwater vehicles is mainly electric power. The new green high-energy power source represented by lithium batteries is gradually applied to underwater vehicles due to its advantages of high energy, small self-discharge, and no memory effect. [0003] The battery compartment of an underwater vehicle is mostly a cylindrical airtight space, and the underwater volume space is highly constrained. The volume specific energy of the battery is demanding, and in a high-power working environment, the battery pack is continuously discharged at a large rate, resulting in rapid heat dissipation in the cabin. Accumulated, it is very easy to generate the risk of thermal runaway, which seriously threatens the operational safety of aircraft. [0004] Aiming at the heat dissipation problem of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M10/42H01M10/48H01M10/613H01M50/204H01M50/509
CPCH01M10/052H01M10/613H01M10/42H01M10/48H01M50/509H01M50/204Y02E60/10
Inventor 卢丞一李梦杰田文龙毛昭勇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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