Soft package lithium ion battery module for electric vehicle

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

Active Publication Date: 2014-10-29
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

Method used

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  • Soft package lithium ion battery module for electric vehicle
  • Soft package lithium ion battery module for electric vehicle
  • Soft package lithium ion battery module for electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] See attached figure 1 , 2 , 4, 5, 6, a soft-packed lithium-ion battery module of the present invention, the module includes a soft-packed lithium-ion battery unit, a bottom plate 4, an upper cover 3, and a fastening bolt; the soft-packed lithium-ion battery unit includes a soft Lithium-ion battery 1 and heat sink 2 are included. The heat sink 2 has a substantially rectangular structure and is composed of two substantially rectangular box bodies 8. The upper end surface and a short side of the box body 8 are both open , The side surfaces of the box body extending from the remaining three sides are not perpendicular to the bottom surface, forming a substantially rectangular open box structure with a small bottom surface and a large top surface. The three side ends of the box body 8 each extend with a slot 9 The cross section of the card slot 9 is basically rectangular with an opening at the bottom, and the opening direction of the card slot 9 is opposite t...

Example Embodiment

[0053] Example 2

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

[0055] The soft-packed lithium-ion battery module of this embodiment is composed of 20 layers of soft-packed lithium-ion battery layer units, and each layer of soft-packed lithium-ion battery layer unit has 4 soft-packed lithium-ion batteries, which pass through the end conductive sheet 6, the middle Conductive sheet 7, realizes series connection, and finally constitutes a 72V40Ah soft-pack lithium-ion battery module;

[0056] The middle conductive sheet 7 has a rectangular shape, and two sets of through grooves symmetrically distributed along the axis of the rectangle are provided on it, and each set of through grooves has four parallel elongated through grooves 12;

[0057] The end conductive sheet 6 is rectangular, and elongated through slots 12 are evenly distributed along the length ...

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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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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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