阅读说明：本技术 一种具有阻燃效果的锂电池 (Lithium battery with flame retardant effect ) 是由 邓建平 刘丽 于 2020-07-31 设计创作，主要内容包括：本发明公开了一种具有阻燃效果的锂电池,包括正极板、负极板、隔断膜、正极耳、负极耳、绝缘片、外壳和阻燃组件,所述正极板与正极耳连接,负极板与负极耳连接,正极耳和负极耳外侧均固定有绝缘片,所述正极耳和负极耳与正极板和负极板连接处设有所述阻燃组件,所述外壳为阻燃材料制作；该具有阻燃效果的锂电池,设置阻燃组件,可根据温度自动控制水与氢氧化镁混合,覆盖锂电池内部正极板与负极板,防止锂电池自燃,且外壳采用阻燃材料制作,外壳可延展性强,且阻燃效果好,进一步增加锂电池的安全性。(The invention discloses a lithium battery with a flame retardant effect, which comprises a positive plate, a negative plate, a partition film, a positive tab, a negative tab, insulating sheets, a shell and a flame retardant component, wherein the positive plate is connected with the positive tab; this lithium cell with flame retardant efficiency sets up fire-retardant subassembly, can mix according to temperature automatic control water and magnesium hydrate, covers inside positive plate and the negative plate of lithium cell, prevents the lithium cell spontaneous combustion, and the shell adopts the flame retardant material preparation, and the shell ductility is strong, and flame retardant efficiency is good, further increases the security of lithium cell.)

1. The utility model provides a lithium cell with flame retardant efficiency, its characterized in that, includes positive plate, negative plate, separates disconnected membrane, anodal ear, negative pole ear, insulating piece, shell and fire-retardant subassembly, the positive plate is connected with anodal ear, and the negative plate is connected with the negative pole ear, and the anodal ear and the negative pole ear outside all are fixed with the insulating piece, anodal ear and negative pole ear are equipped with positive plate and negative plate junction fire-retardant subassembly, the shell is the fire-retardant material preparation.

2. The lithium battery with a flame retardant effect according to claim 1, wherein the flame retardant assembly comprises a support frame fixed at the bottom of the positive electrode tab and the negative electrode tab, connecting pipes are fixed at two ends of the support frame, the support frame is divided into an upper layer and a lower layer, and the upper layer and the lower layer are connected through the connecting pipes.

3. The lithium battery as claimed in claim 2, wherein the connecting tube is filled with a thermal frit between the upper and lower layers.

4. The lithium battery with flame retardant effect as claimed in claim 2, wherein the upper layer of the supporting frame is filled with water, the lower layer is filled with magnesium hydroxide powder, and the lower layer of the supporting frame is provided with pores near the inner side of the lithium battery.

5. The lithium battery with flame retardant effect as claimed in claim 1, wherein the hot melt block is made of paraffin wax material.

6. The lithium battery with flame retardant effect as claimed in claim 1, wherein the housing is made of a material comprising: polystyrene particles, aluminum hydroxide particles and dicumyl peroxide particles are mixed and melted according to a certain mass formula, and the mixture is extruded and molded into a shell.

7. The lithium battery with flame retardant effect of claim 1, wherein the polystyrene particles, the aluminum hydroxide particles and the dicumyl peroxide particles comprise the following components in parts by weight: 60-80 parts of polystyrene particles, 10-15 parts of aluminum hydroxide particles and 3-5 parts of dicumyl peroxide particles.

Technical Field

The invention relates to the technical field of lithium batteries, in particular to a lithium battery with a flame retardant effect.

Background

With the economic development and the industrialization process of China accelerating, a series of environmental problems emerge from the water surface one after another, and the energy crisis and the environmental pollution become important contradictions restricting the development of China, so that the adjustment of the energy structure and the promotion of the energy storage technology innovation become the key development strategies of China. The lithium ion battery is one of the most important technologies in the field of energy storage, and has wide application in the fields of photovoltaic power generation and electric automobiles.

Lithium batteries can be classified into lithium metal batteries and lithium ion batteries; lithium ion batteries do not contain lithium in the metallic state and are rechargeable; lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or lithium alloy as a negative electrode material, which uses the following reaction: li + MnO2= LiMnO2 the reaction is a redox reaction, discharging; lithium metal batteries are generally batteries using manganese dioxide as a positive electrode material, metal lithium or an alloy metal thereof as a negative electrode material, and a nonaqueous electrolyte solution; if the lithium battery in the prior art is put into a fire pile or in a high-temperature environment, fire and explosion accidents are easy to happen.

Disclosure of Invention

The present invention is directed to a lithium battery with flame retardant effect to solve the above problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lithium cell with flame retardant efficiency, mainly includes positive plate, negative plate, separates disconnected membrane, anodal ear, negative pole ear, insulating piece, shell and fire-retardant subassembly, the positive plate is connected with anodal ear, and the negative plate is connected with the negative pole ear, and the anodal ear all is fixed with the insulating piece with the negative pole ear outside, anodal ear and negative pole ear are equipped with positive plate and negative plate junction fire-retardant subassembly, the shell is the fire-retardant material preparation.

Preferably, the flame-retardant assembly comprises a support frame fixed at the bottoms of the anode tabs and the cathode tabs, connecting pipes are fixed at two ends of the support frame, the support frame is divided into an upper layer and a lower layer, and the upper layer and the lower layer are connected through the connecting pipes.

Preferably, the connecting pipe is filled with hot frit between the upper layer and the lower layer.

Preferably, the upper layer of the support frame is filled with water, the lower layer of the support frame is filled with magnesium hydroxide powder, and the lower layer of the support frame is provided with a pore close to the inner side of the lithium battery.

Preferably, the hot melting block is made of paraffin materials.

Preferably, the shell manufacturing material comprises: polystyrene particles, aluminum hydroxide particles and dicumyl peroxide particles are mixed and melted according to a certain mass formula, and the mixture is extruded and molded into a shell.

Preferably, the polystyrene particles, the aluminum hydroxide particles and the dicumyl peroxide particles comprise the following components in parts by weight: 60-80 parts of polystyrene particles, 10-15 parts of aluminum hydroxide particles and 3-5 parts of dicumyl peroxide particles.

Compared with the prior art, the invention has the beneficial effects that:

1. this lithium cell with flame retardant efficiency sets up fire-retardant subassembly, including fixing the carriage in anodal ear and negative pole ear bottom, the carriage both ends are fixed with the connecting pipe, and the carriage divide into about two-layer, is connected through the connecting pipe between upper strata and the lower floor, and the inside paraffin that fills of connecting pipe, when the inside high temperature of battery, paraffin melts, melts the completion back, and water and magnesium hydrate mix, covers the inside positive plate of lithium cell and negative plate, prevents the spontaneous combustion of lithium cell.

2. This lithium cell with flame retardant efficiency, the shell utilizes polystyrene to make, and adds fire-retardant aluminium hydroxide granule in polystyrene granule, and the shell ductility is strong, and flame retardant efficiency is good, increases the security of lithium cell.

Drawings

FIG. 1 is a schematic structural view of the structure of the present invention;

in the figure: positive plate 1, negative plate 2, separating film 3, positive tab 4, negative tab 5, insulating piece 6, shell 7, fire-retardant subassembly 8, carriage 9, connecting pipe 10, hot melt piece 11, pore 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a lithium cell with flame retardant efficiency, includes positive plate 1, negative plate 2, separates disconnected membrane 3, anodal ear 4, negative pole ear 5, insulating piece 6, shell 7 and fire-retardant subassembly 8, positive plate 1 is connected with anodal ear 4, and negative plate 2 is connected with negative pole ear 5, and anodal ear 4 all is fixed with insulating piece 6 with the 5 outsides of negative pole ear, anodal ear 4 and negative pole ear 5 are equipped with positive plate 1 and the 2 junctions of negative plate fire-retardant subassembly 8, shell 7 is the fire-retardant material preparation.

Specifically, the flame-retardant assembly comprises a supporting frame 9 fixed at the bottoms of the positive electrode tabs and the negative electrode tabs, connecting pipes 10 are fixed at two ends of the supporting frame 9, the supporting frame 9 is divided into an upper layer and a lower layer, and the upper layer and the lower layer are connected through the connecting pipes.

Specifically, the connecting tube 10 is filled with a thermal frit 11 between the upper and lower layers.

Specifically, the upper layer of the support frame 9 is filled with water, the lower layer is filled with magnesium hydroxide powder, and the lower layer of the support frame 9 is close to the inner side of the lithium battery and is provided with a pore 12.

Specifically, the hot frit 11 is made of a paraffin material.

Specifically, the manufacturing materials of the housing 7 include: polystyrene particles, aluminum hydroxide particles and dicumyl peroxide particles are mixed and melted according to a certain mass formula, and the mixture is extruded and molded into a shell.

Specifically, the polystyrene particles, the aluminum hydroxide particles and the dicumyl peroxide particles comprise the following components in parts by weight: 60-80 parts of polystyrene particles, 10-15 parts of aluminum hydroxide particles and 3-5 parts of dicumyl peroxide particles.

Example 1

The shell 7 is made of the following materials: 60 parts of polystyrene particles, 10 parts of aluminum hydroxide particles and 3 parts of dicumyl peroxide particles.

Mixing and melting the polystyrene particles, the aluminum hydroxide particles and the dicumyl peroxide particles according to a certain mass formula, and extruding and molding to form the shell.

Example 2

The shell 7 is made of the following materials: 80 parts of polystyrene particles, 15 parts of aluminum hydroxide particles and 5 parts of dicumyl peroxide particles.

Mixing and melting the polystyrene particles, the aluminum hydroxide particles and the dicumyl peroxide particles according to a certain mass formula, and extruding and molding to form the shell.

Example 3

70 parts of polystyrene particles, 12 parts of aluminum hydroxide particles and 4 parts of dicumyl peroxide particles.

Mixing and melting the polystyrene particles, the aluminum hydroxide particles and the dicumyl peroxide particles according to a certain mass formula, and extruding and molding to form the shell.

The working principle is as follows: when the inside high temperature of battery, paraffin melts, melts the completion back, and the upper and lower both ends intercommunication of two connecting pipes 10, water get into the lower floor from the upper strata of carriage 9, and water mixes with magnesium hydroxide, inside gradually flowing into the lithium cell through pore 12, covers inside positive plate 1 of lithium cell and negative plate 2, prevents the lithium cell spontaneous combustion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.