CN201838674U - Novel lithium-ion storage battery - Google Patents

Abstract

The utility model relates to a novel lithium ion accumulator. The technical scheme of the utility model is that the top of the battery cell is fixedly connected with a pole assembly system, wherein a pair of positive poles and a pair of negative poles are fixedly connected together, and there is an upper insulating gasket between them on the aluminum cover plate , metal gaskets, insulating gaskets, insulating plates, negative bolts, and positive bolts are connected separately. The utility model solves the defects that the number of poles of the lithium-ion accumulator is generally one positive pole and one negative pole due to vibration and looseness, and the resulting fire and personal safety defects. The utility model makes the contact between the pole post of the battery and the connecting piece more reliable, thereby ensuring the service performance of the lithium-ion storage battery, promoting the further improvement of the safety of the lithium-ion storage battery, and having great practical significance in production. And the production is convenient and reliable, the process is simple and the efficiency is high.

Description

A new lithium-ion battery

technical field

The utility model relates to a storage battery, in particular to a novel lithium ion storage battery.

Background technique

Lithium-ion batteries have the advantages of safety, high stability, large specific energy, no memory effect, fast charging, long cycle life, and no pollution. They are widely used in large and light electric vehicles, light electric tools, solar and wind power storage Energy equipment, mobile communication equipment, etc. Therefore, the performance and structure requirements of lithium-ion batteries are getting higher and higher, which is the main direction of research and development in the battery industry at present.

Before the invention of the utility model, the number of poles of a lithium-ion battery was generally one positive pole and one negative pole. Since lithium-ion batteries are widely used in large and light electric vehicles, the vibration and sudden acceleration of the vehicle during driving Or deceleration, or when colliding, it is easy to cause the pole and the connecting piece to loosen or even break. Poor contact will cause the battery to ignite, and the pole will cause the battery to break. This will cause harm to people and vehicles. Because of this The existence of this kind of defect leads to certain potential safety hazards in the process of using lithium-ion power batteries.

Contents of the invention

The purpose of this utility model will overcome above-mentioned defect exactly, design, develop a kind of novel lithium ion storage battery.

The technical scheme of the utility model is:

A new type of lithium-ion storage battery, including a battery cell, its main technical feature is that the top of the battery cell is fixedly connected with a pole assembly system, the pole assembly system is equipped with a bipolar pole, and the bipolar Pole refers to a pair of positive poles fixedly connected together, a pair of negative poles fixedly connected together, the positive pole, negative pole are set on the aluminum cover plate, between the positive pole, negative pole and aluminum cover plate There are upper insulating gaskets and metal gaskets on the upper part, insulating gaskets and insulating plates on the lower part between the positive pole, negative pole and the aluminum cover plate, and the negative electrode bolts are connected to the negative pole, insulating plate, insulating gasket, aluminum cover plate, The upper insulating gasket and the metal gasket, the positive electrode bolts are connected to the positive pole column, the insulating plate, the insulating gasket, the aluminum cover plate, the upper insulating gasket and the metal gasket.

The utility model has the advantages and effects of making the contact between the battery pole and the connecting piece more reliable, thereby ensuring the performance of the lithium-ion battery and further improving the safety of the lithium-ion battery, which has great practical significance in production.

Other advantages and effects of the present utility model will continue to be described below.

Description of drawings

Fig. 1 --- the structural representation of the utility model.

Figure 2——Schematic diagram of the structural principle of the pole assembly system in Figure 1.

Figure 3 - Side view of Figure 2.

Figure 4 - Top view of Figure 2.

In the figure, each label indicates:

Battery cell 1, pole assembly system 2, (aluminum) positive pole 3, insulating plate 4, insulating gasket 5, aluminum cover 6, (copper) negative pole 7, metal gasket 8, (copper quality) negative pole bolt 9, (aluminum) positive pole bolt 10, upper insulating gasket 11. Hereinafter referred to as: positive pole 3 , negative pole 7 , negative bolt 9 , and positive bolt 10 .

Detailed ways

As shown in Figure 1, Figure 2, Figure 3 and Figure 4:

The utility model includes a battery cell 1, the pole assembly system 2 is welded on the top of the battery cell 1; the pole assembly system 2 is equipped with a pair of positive poles 3 and a pair of negative poles 7, and a pair of positive poles 3 are closely connected. Connection, the lower part of the positive post 3 is connected to the positive sheet inside the cell (not shown in the figure, omitted), a pair of negative posts 7 are closely connected, and the lower part of the negative post 7 is connected to the negative sheet inside the cell (not shown in the figure, omitted) ) are connected; the positive pole 3 and the negative pole 7 are arranged on the aluminum cover plate 6, and the upper part between the positive pole 3, the negative pole 7 and the aluminum cover 6 has an upper insulating gasket 11 and a metal gasket 8 for insulation protection ; The lower part between the positive pole 3 and the negative pole 7 and the aluminum cover plate 6 has an insulating gasket 5 and an insulating plate 4 for insulation protection; the positive pole 3, the insulating plate 4, the insulating gasket 5, the aluminum cover plate 6, the upper The insulating gasket 11 and the metal gasket 8 are connected by the positive bolt 10, and the negative column 7, the insulating plate 4, the insulating gasket 5, the aluminum cover plate 6, the upper insulating gasket 11 and the metal gasket 8 are connected by the negative bolt 9, Both positive bolt 10 and negative bolt 9 have threaded blind holes in their centers, which are connected with external connecting pieces (not shown in the figure, omitted).

Description of the utility model application process:

When the current flows from the positive pole to the negative pole, since there are a pair of positive poles 3 and a pair of negative poles 7, even if one positive pole 3 or negative pole 7 is loose, the other positive pole 3 or negative pole 7 is still tight, thereby avoiding question. Especially in coal mines, if there is looseness, sparks will be generated between the positive pole 3 and the negative pole 7, which may cause an explosion or a fire.

In practice, the utility model cancels the structure of the monopole in the pole assembly system, and adopts the bipolar pole, that is, a pair of positive poles 3 and a pair of negative poles 7, such bipolar poles have small internal resistance , Good electrical conductivity, shock resistance, and anti-loosening characteristics. The positive pole 3 has two binding posts, and the negative pole 7 also has two binding posts, which can make the connection stable and reliable even in the process of strong vibration or collision; at the same time, the structure of the bipolar pole can ensure that the positive pole 3 and the negative pole 7 are not connected. It will rotate at will, thus further ensuring the reliability and safety of the battery.

It can be seen from the above technical solution provided by the utility model that the safety of the lithium-ion battery has been further improved, and the shock resistance, impact resistance and drop resistance of the lithium-ion battery have been enhanced, which is conducive to the safe and extensive application of the lithium-ion battery. Significant practical significance in production.

In addition, the utility model has the advantages of convenient and reliable production, simple process and high efficiency.

To sum up, compared with the prior art, the lithium ion storage battery provided by the utility model can have a more firm and reliable link between the pole and the connecting piece, thus ensuring the safe use of the battery, which has great practical significance in production.

The above description is only the preferred mode of the present utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present utility model. It should be regarded as the protection scope of the present utility model.

Claims (4)

1. A novel lithium-ion storage battery, comprising a battery cell, characterized in that the top of the battery cell is fixedly connected with a pole assembly system, the pole assembly system is equipped with a bipolar pole, and the bipolar pole Pole refers to a pair of positive poles that are fixedly connected together, and a pair of negative poles that are fixedly connected together. There are upper insulating gaskets and metal gaskets on the upper part, insulating gaskets and insulating plates on the lower part between the positive pole, negative pole and the aluminum cover plate, and the negative pole bolts are connected to the negative pole, insulating plate, insulating gasket, aluminum cover plate, The upper insulating gasket and the metal gasket, the positive electrode bolts are connected to the positive pole column, the insulating plate, the insulating gasket, the aluminum cover plate, the upper insulating gasket and the metal gasket. 2. The novel lithium-ion storage battery according to claim 1, characterized in that there are threaded blind holes in the centers of the positive pole bolts and the negative pole bolts. 3. The novel lithium-ion storage battery according to claim 1, characterized in that the positive pole bolt and the positive pole post are both made of aluminum material. 4. The novel lithium-ion storage battery according to claim 1, characterized in that said negative pole bolt and negative pole post are all made of copper material.

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