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Power battery module

A technology for power batteries and batteries, which is applied to secondary batteries, battery pack components, circuits, etc., can solve problems such as leakage of phase change materials and potential safety hazards, improve temperature uniformity, protect single batteries, and maintain good The effect of the temperature control effect

Active Publication Date: 2015-06-17
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can achieve the effect of heat dissipation and temperature control, there is a danger of leakage when the phase change material is liquefied, and there are potential safety hazards

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 The power battery module shown is mainly composed of a module case cover 1 , a single battery 2 , a heat-absorbing gasket 3 , an electrical connector 4 , and a module case 5 . The single battery 2 and the heat-absorbing gasket 3 are stacked and arranged at intervals, and there is a single battery 2 between the two heat-absorbing gaskets 3 . Place the arranged single cells 2 and the heat-absorbing gasket 3 into the module case 5 together. One end of the two electrical connectors 4 is respectively connected to the two poles of the single battery 2, and the other end protrudes out of the module housing 5 to fix the electrical connector 4 and the housing 5. The outer surface of the electrical connector 4 is covered with insulating material layer. Cover the shell cover 1 of the module on the shell 5 and fix it, and the formed power battery module is as follows: figure 2 shown.

[0031] Among them, the single battery 2 is a rectangular lithium-ion batter...

Embodiment 2

[0035] A power battery module, the structure of which is similar to that of Embodiment 1, the difference is that the single power battery 2 is a soft pack battery packaged in aluminum-plastic film, and the heat-absorbing gasket 3 is filled with a heat-conducting sealing coating layer 31. The change material 32 is formed by the aggregation of many phase change coated monomer particles 33 . Phase change coated monomer particles 33 such as Figure 4 As shown, it is composed of an outer polymer coating layer 311 and a phase change material core 312, the material of the polymer coating layer 311 is melamine resin, and the material of the phase change material core 312 is cetyl alcohol. The formed heat-absorbing gasket 3 has a thickness of 6.0 mm, the shape of the gasket is the same as that of the single battery 2 , and its size is slightly smaller than the bottom surface of the single power battery 2 . The outer surface of the single power battery 2 is coated with heat-conducting ...

Embodiment 3

[0038] A power battery module, the structure of which is similar to that of Embodiment 1, the difference is that the heat-absorbing gasket 3 is directly mixed and pressed into a sheet shape by covering the monomer particles 33 and the adhesive material 34, such as Figure 5 As shown, the phase change coated monomer particle 33 is composed of an outer melamine resin polymer coating layer 311 and a solid-liquid converted cetyl alcohol phase change material core 312, and the bonding material is silica gel.

[0039]This power battery module has the same advantages as Embodiment 1, and has enhanced safety and reliability. The heat-absorbing gasket 3 has a simple manufacturing process, is easy to form, and is soft in texture, which has a certain protective effect on the pouch battery.

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Abstract

The invention relates to a power battery module, mainly comprising monomer power batteries, an electric connection piece, a battery module casing cover and a casing; the monomer power batteries are stacked and installed in the casing, electrodes on both ends of the battery are respectively connected with the electric connection piece, the electric connection piece is insulatingly fixed on the casing, one end of the electric connection piece extends out of the casing, the casing and the casing cover are fixedly matched to form a module, endothermic gaskets are placed between the monomer power batteries, and the endothermic gaskets and the monomer power batteries are in mutual interval stacked arrangement. The power battery module can effectively control the module temperature in the appropriate operating temperature range, and improves the uniformity of the temperature. The power battery module can be widely used in the battery system of hybrid electric vehicles and pure electric vehicles, and also can be used as an energy storage unit in an energy storage system.

Description

technical field [0001] The invention relates to a battery module capable of temperature uniformity and temperature control, which belongs to a key component used in battery systems of hybrid electric vehicles and pure electric vehicles. Background technique [0002] The power battery module is assembled from a number of single power batteries. The single power battery has very strict requirements on the working temperature. If the working temperature is too high, the decay speed will be accelerated, the service life will be shortened sharply, and even cause safety accidents; if the working temperature is too low , the power and capacity of the battery will be significantly reduced. If the power is not limited, it may cause irreversible attenuation and bury potential safety hazards. In addition, the temperature non-uniformity between single power batteries will cause performance differences and accelerate the deterioration of battery modules. During the driving process of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/617H01M10/625H01M10/6555H01M10/659H01M2/10H01M50/24H01M50/244H01M50/249
CPCH01M50/20Y02E60/10
Inventor 付垚唐海波卢世刚胡博邹春龙薛轶王琳
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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