A soft pack lithium-ion battery module

A lithium-ion battery, ion battery technology, applied in secondary batteries, battery pack components, circuits, etc., can solve the problems of complex heat dissipation structure, high manufacturing cost, unfavorable battery life, etc., and achieve high energy density and compact structure. , the effect of improving the service life

Active Publication Date: 2017-01-11
CHANGFENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat dissipation structure of this solution is relatively complicated, and the manufacturing cost is relatively high. At the same time, the vertical solution is not good for the service life of the battery.

Method used

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  • A soft pack lithium-ion battery module
  • A soft pack lithium-ion battery module
  • A soft pack lithium-ion battery module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] See attached figure 1 , 2 , 3, 4, 5, 6, a soft pack lithium ion battery module of the present invention, the module includes a soft pack lithium ion battery layer unit, a bottom plate 5, an upper cover 4, and fastening bolts; the soft pack lithium ion battery The layer unit includes a soft-packed lithium-ion battery 1, a frame 3, and a heat dissipation plate 2. The frame 3 is a rectangular structure composed of four rectangular cavities 17. The heat dissipation plate 2 is provided with the same shape and number as the frame 3. Rectangular cavity 17 has the same number of pits, the heat dissipation plate 2 is clamped in the frame 3, and the pits on the heat dissipation plate 2 sink into the rectangular cavity 17 of the frame 3; the soft pack lithium ion battery 1 is set In the pit of the heat dissipation plate 2, a soft-packed lithium-ion battery layer unit is formed as a whole;

[0043] Four soft-pack lithium-ion battery layer units are stacked along the thickness dir...

Embodiment 2

[0056] See attached Figure 7 , the 4×20 module prepared by the present invention constitutes a 72V40Ah soft-pack lithium-ion battery module;

[0057] The difference between Embodiment 2 and Embodiment 1 is that the soft-packed lithium-ion battery module of this embodiment is composed of 20 layers of soft-packed lithium-ion battery layer units, and there are 4 soft-packed lithium-ion battery layer units in each layer. For lithium-ion batteries, every four layers of soft-packed lithium-ion battery layer units are connected in series through the end conductive sheet 6 and the middle conductive sheet 7 to form a battery layer unit group. There are 5 layer unit groups stacked. The terminal conductive sheet 6a is connected in series to finally form a 72V40Ah soft-pack lithium-ion battery module;

[0058] The middle conductive sheet 7 is rectangular, on which two groups of through grooves are symmetrically distributed along the rectangular axis, and each group of through grooves ha...

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Abstract

The invention relates to a soft-packing lithium ion battery module. The soft-packing lithium ion battery module comprises soft-packing lithium ion battery layer units, a bottom plate, an upper cover and fastening bolts, wherein each soft-packing lithium ion battery layer unit comprises a soft-packing lithium ion battery, a frame and a heat dissipating plate, the frame is of a rectangular structure and is composed of at least one rectangular cavity, the heat dissipating plate is provided with pits of which the quantity and the shape are the same as those of each rectangular cavity of the frame, the heat dissipating plate is clamped in the frame, the pits in the heat dissipating plate are sunk into each rectangular cavity of the frame, and each soft-packing lithium ion battery is arranged in a pit of the heat dissipating plate to form a soft-packing lithium ion battery layer unit integrally; at least two soft-packing lithium ion battery layer units are overlaid in the thickness direction and are fixed between the bottom plate and the upper cover by the fastening bolt to form the soft-packing lithium ion battery module; one surface of each battery is clung to the heat dissipating plate, so that the heat dissipation is convenient, a heat dissipating air channel is distributed on the frame to enhance the heat dissipating function; each soft-packing lithium ion battery layer unit can be expanded transversely, a plurality of layers of soft-packing lithium ion battery layer units also can be overlaid to realize expansion in the thickness direction, so that the distribution is convenient; and the soft-packing lithium ion battery module has the characteristics of compact structure and high energy density.

Description

technical field [0001] The invention relates to a lithium-ion battery module, in particular to a soft-pack lithium-ion battery module. The invention belongs to the technical field of soft pack lithium ion battery preparation. Background technique [0002] The development of energy-saving and new energy vehicles has become an inevitable choice for my country's energy strategy. According to the development plan, the current focus is to promote the industrialization of pure electric vehicles and plug-in hybrid vehicles. In my country, electric vehicles used to use lead-acid batteries as power batteries, but lead-acid batteries have low energy density and will have a negative impact on the environment, making manufacturers have to find alternatives; hybrid vehicles used to use nickel-metal hydride batteries, but Ni-MH batteries have low energy density and are not suitable for plug-in hybrid vehicles. Lithium-ion batteries have become the first choice for pure electric vehicles ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M2/10H01M10/613
CPCH01M10/0525H01M50/20H01M50/531Y02E60/10
Inventor 张军张华平卿剑平邓自贤张练达
Owner CHANGFENG GROUP
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