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A soft-pack lithium-ion battery module for electric vehicles

A technology for lithium-ion batteries and electric vehicles, applied in secondary batteries, battery pack components, circuits, etc., can solve the problems of unfavorable battery life, high manufacturing cost, complex heat dissipation structure, etc., and achieve good protection and compact structure , good scalability

Active Publication Date: 2016-02-03
HUNAN FENGYUAN YESHINE KINGCO NEW ENERGY
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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 for electric vehicles
  • A soft-pack lithium-ion battery module for electric vehicles
  • A soft-pack lithium-ion battery module for electric vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] See attached figure 1 , 2 , 4, 5, 6, a soft pack lithium ion battery module of the present invention, the module includes a soft pack lithium ion battery unit, a bottom plate 4, an upper cover 3, fastening bolts; the soft pack lithium ion battery unit includes a soft pack lithium ion battery unit Pack lithium-ion battery 1, heat dissipation plate 2, described heat dissipation plate 2 is substantially rectangular structure, is made up of two substantially rectangular box bodies 8, and the upper end face of described box body 8 and the side of a short side are all opening shape , the side of the box body extended from the remaining three sides is not perpendicular to the bottom surface, forming a substantially rectangular open box structure with a small bottom surface and a large top surface, and a card slot 9 is extended on each of the three side ends of the box body 8 , the cross-section of the card slot 9 is substantially rectangular and the bottom surface is open, an...

Embodiment 2

[0054] See attached image 3 , 4 , 5, 6, this embodiment is a 4×20 soft-pack lithium-ion battery module constituted by the present invention, the difference from Embodiment 1 is:

[0055] The soft-packed lithium-ion battery module of the present embodiment is made up of 20 layers of soft-packed lithium-ion battery layer units, and there are 4 soft-packed lithium-ion batteries in each layer of soft-packed lithium-ion battery layer units. The conductive sheet 7 is connected in series to finally form a 72V40Ah soft-pack lithium-ion battery module;

[0056] 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 has four parallel elongated through grooves 12;

[0057] The conductive sheet 6 at the end is rectangular, and strip-shaped through grooves 12 are evenly distributed along the length direction of the rectangle;

[0058] The multi-layer soft-pack lithi...

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Abstract

The invention discloses a soft package lithium ion battery module for an electric vehicle. The soft package lithium ion battery module comprises soft package lithium ion battery units, a bottom plate, an upper cover and fastening bolts, wherein each soft package lithium ion battery unit comprises a soft package lithium ion battery and a heat radiating plate, the heat radiating plate is basically in a rectangular structure, and is composed of at least one basically rectangular box body, one slot extends from each of end parts of three side surfaces of the box body, the soft package lithium ion battery is arranged in the box body of the heat radiating plate, and the soft package lithium ion battery and the box body integrally form the soft package lithium ion battery unit, and at least two soft package lithium ion battery units are overlapped along the vertical direction and are fixedly installed between the bottom plate and the upper cover through the fastening bolts to form the soft package lithium ion battery module. The battery units can be flexibly expanded to bring the convenience for arrangement. Slots of adjacent heat radiating plates form an air duct, thus the heat radiation of each battery is facilitated. The soft package lithium ion battery module provided by the invention is compact in structure, convenient to maintain and easy to expand, has a function of protecting the batteries, is convenient to electrically connect, and good in heat radiation property because the battery units are mutually isolated. The soft package lithium ion battery module has a remarkable function for prolonging the service life and improving the energy density of a lithium battery pack of the electric vehicle, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to a lithium-ion battery module, in particular to a soft-pack lithium-ion battery module for an electric vehicle. 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. 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. Lithium-ion batteries are the first choice for electric vehicles because of their higher energy density. [0003] The production history of lithium-ion batteries in my country is not short, but the production of soft-pack lithium-ion batteries specially used for electric vehicles has just begun in recent years. The use of soft-pack lithium-ion batt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/10H01M10/6555H01M10/6556H01M2/26
CPCH01M10/0525H01M50/20H01M50/531Y02E60/10
Inventor 卿剑平张军袁桂肖林刚张华平张练达胡春娇
Owner HUNAN FENGYUAN YESHINE KINGCO NEW ENERGY
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