CN201112482Y - High-capacity 9-volt lithium-manganese soft-pack combined battery structure - Google Patents

Abstract

A high-capacity 9-volt lithium-manganese soft-package combined battery structure, which includes a sealed case (1) and a case cover (5). In the sealed case (1), there are three soft-packaged batteries (2) connected in series in series. The positive and negative poles of the soft package battery (2) are drawn out through two terminal posts (3) on the case cover (5). It overcomes the shortcoming of short service life of existing batteries, which is only 1-3 years. The utility model has a compact structure design, fully utilizes the internal space, and uses copper lithium strip (copper foil) to greatly increase the battery capacity, and the volume ratio of the active material as the capacity display unit is increased, so its capacity can be greatly improved. From the usual 900mAh to 1200mAh.

Description

High-capacity 9-volt lithium-manganese soft-pack combined battery structure

technical field

The utility model relates to a battery structure, more specifically, it is a high-capacity 9-volt lithium-manganese flexible package combined battery structure.

Background technique

Existing 9-volt batteries currently on the market have a short service life due to reasons such as structural design. For example, the service life of the existing zinc-manganese 9V6F22 battery is only one year, and the service life of the alkaline 6F22 battery is 2-3 years.

Contents of the invention

In order to overcome the shortcomings of the existing 9-volt battery such as short service life, the utility model provides a high-capacity 9-volt lithium-manganese flexible package combined battery structure, and its working life can reach 8-10 years.

The purpose of this utility model is achieved through the following measures: a high-capacity 9-volt lithium-manganese flexible package combined battery structure, which includes a sealed shell 1 and a shell cover 5, and is characterized in that there are three sequentially connected in series in the sealed shell 1. The positive and negative poles of the soft-packaged batteries 2 connected in series are drawn out through the two terminals 3 on the case cover 5 .

In the above technical solution, the flexible package battery 2 includes a sealed square aluminum-plastic composite film 21 located on the outer layer, and a square shape formed by winding a positive electrode sheet 22, a separator 23, and a negative electrode sheet 24 inside the sealed square aluminum-plastic composite film 21. The battery cell 25, the separator 23 is located between the positive electrode sheet 22 and the negative electrode sheet 24, the positive electrode sheet 22 and the negative electrode sheet 24 are connected with a tab 27, and one end of the tab 27 is located outside the sealed square aluminum-plastic composite film 21 , there is copper foil 28 on the negative electrode sheet 24 .

In the above technical solution, there is a protective plate 4 between the soft package battery 2 connected in series and the terminal post 3, and the protective plate 4 is composed of a circuit board 41, three diodes D1, D2, D3, a self-recovery thermal The three diodes D are connected in parallel with each single soft package battery 2 and then connected in series with the self-recovery thermistor PTC.

In the above technical solution, the three soft-packaged batteries 2 connected in series are provided with straps 29 on the outside.

The utility model has the following advantages in the structure of the high-capacity 9V lithium-manganese flexible package combined battery: ① The utility model high-capacity 9V lithium-manganese flexible package combined battery is a new type of Li-MnO ₂ 9V battery, which adopts an aluminum-plastic composite film shell, a pole ear , copper-lithium strip (copper foil) and other materials, under the premise of keeping the external dimensions of the 9V alkaline 6F22 battery (49*27*18)mm unchanged, using 3 CF502440 single flexible packaging batteries with a voltage of 3V in series combination It combines the electrochemical system of lithium-manganese batteries and the flexible packaging technology of polymer lithium-ion batteries. ②Using the protection board to protect the battery pack, thus enhancing the safety and reliability of the battery. ③Because the internal use is a square soft-packed battery cell, the structure is designed very tightly to make full use of the internal space, and the use of copper-lithium strip (copper foil) greatly increases the battery capacity, and the volume ratio of the active material used as the capacity display unit Therefore, its capacity can be greatly improved, from the general 900mAh to 1200mAh. ④Using a practical patent for a mechanism to increase the capacity of the power lithium-manganese battery, so that the 9V battery has the characteristics of capacity uniformity and consistency.

The following table is the performance comparison table of 6F22 lithium manganese battery, alkaline 6F22 battery and the battery of the utility model

Description of drawings

Fig. 1 is a schematic structural view of the positive plate of a single flexible package battery in the present invention.

Fig. 2 is a structural schematic diagram of the negative plate of the single flexible package battery in the utility model.

Fig. 3 is an expanded view of the positive and negative electrode sheets and diaphragm of a single flexible package battery in the present invention.

Fig. 4 is a structural diagram of winding Fig. 3 into a square cell.

Fig. 5 is an outline view of a single flexible package battery in the present invention.

Fig. 6 is a structural diagram of three single flexible-packaged batteries connected in series in the utility model.

Fig. 7 is a circuit connection diagram of three single flexible-packaged batteries and the protection board in the utility model.

Fig. 8 is a structural diagram of the protective plate in the utility model.

Fig. 9 is a structural outline diagram of a high-capacity 9-volt lithium-manganese flexible package combined battery of the present invention.

Detailed ways

The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model, and the advantages of the utility model will become clearer and easier to understand.

Referring to the accompanying drawings, it can be seen that the utility model has a high-capacity 9-volt lithium-manganese flexible package combined battery structure, which includes a sealed shell 1 and a shell cover 5. In the sealed shell 1, there are three flexible packaged batteries 2 connected in series in sequence, and the flexible packaged batteries connected in series The positive and negative poles of 2 are drawn out through two terminal posts 3 on the shell cover 5 (as shown in Fig. 6 and Fig. 9).

The flexible package battery 2 includes a sealed square aluminum plastic 21 located on the outer layer, and a square cell 25 formed by winding a positive electrode sheet 22, a separator 23, and a negative electrode sheet 24 in the sealed square aluminum plastic sheet 21, and the separator 23 is located on the positive electrode sheet 22. Between the positive electrode sheet 22 and the negative electrode sheet 24, the positive electrode sheet 22 and the negative electrode sheet 24 are connected with tabs 27, the head conductors of the tabs 27 are located outside the sealed square aluminum plastic 21, and copper foil 28 (such as Figure 1, Figure 2, Figure 3, Figure 4, Figure 5).

There is a protection board 4 between the flexible package battery 2 and the terminal post 3 connected in series, and the protection board 4 is composed of a circuit board 41, three diodes D1, D2, D3, a self-recovery thermistor PTC, and three diodes D is connected in series in opposite directions, and three diodes D are respectively connected in parallel with each single soft-packaged battery 2 and then connected in series with the self-recovery thermistor PTC. There are straps 29 on the outside of the three series-connected soft-packaged batteries 2 (as shown in Figures 6, 7, Figure 8).

The preparation process of the utility model high-capacity 9-volt lithium-manganese flexible package combined battery structure is as follows:

1. According to the method shown in Figure 6, overlap the single cells and bind them together with adhesive tape, and spot-weld the overlapped tabs between the three single cells to complete the series connection of the batteries. At this time, the battery pack leaves A, B, C, D four terminals;

2. Figure 8 is a special protection board for the battery of the present invention, which is composed of 3 diodes and a PTC, and connects the four terminals A, B, C, and D of the battery pack to the corresponding four points on the protection board (A1, B1, C1, D1, among which A-A1, B-B1, C-C1, D-D1) are welded together, lead out a red line of appropriate length and diameter from point A1 of the protection plate, and lead out a red line of the same length and same diameter from point F1 the black line;

4. Figure 9 is the appearance diagram of the battery of the present invention, the circular terminal is the positive pole, and the hexagonal terminal is the negative pole, so that the red line on the protection plate of the battery pack is connected to the positive pole, and the black line is connected to the negative pole;

5. Separate a layer of insulating paper between the battery pack protection plate and the battery case cover, and fix the insulating paper on the protection plate with glass glue, then put the battery pack (three single cells) into the battery case cavity, and cover the cover tightly , the battery shell and the cover are tightly welded with an ultrasonic welding machine, and the battery of the utility model is completed.

Claims (4)

1. A high-capacity 9-volt lithium-manganese soft-package combined battery structure, which includes a sealed case (1) and a case cover (5), and is characterized in that there are three soft-packaged batteries (2) that are sequentially connected in series in the sealed case (1) , the positive and negative poles of the flexible package batteries (2) connected in series are drawn out through the two terminal posts (3) on the case cover (5). 2. The high-capacity 9-volt lithium-manganese flexible package combined battery structure according to claim 1, characterized in that the flexible package battery (2) includes a sealed square aluminum-plastic composite film (21) on the outer layer, and a sealed square aluminum-plastic composite film (21) on the outer layer. A square electric core (25) formed by winding positive electrode sheet (22), diaphragm (23) and negative electrode sheet (24) in the composite film (21), and the separator (23) is located on the positive electrode sheet (22) and the negative electrode sheet Between (24), described positive plate (22) and negative plate (24) are all connected with tab (27), and the head conductor of tab (27) is positioned at outside sealing square aluminum-plastic composite film (21), so Copper foil (28) is arranged on the negative electrode sheet (24). 3. The structure of high-capacity 9-volt lithium-manganese flexible package combined battery according to claim 1 or 2, characterized in that there is a protective plate (4) between the flexible package battery (2) connected in series and the terminal (3) , the protection board (4) is composed of a circuit board (41), three diodes (D1, D2, D3), and a self-recovery thermistor PTC, and the three diodes are connected in series in opposite directions, and the three diodes are respectively connected to each unit The body flexible packaging battery (2) is connected in parallel with the self-recovery thermistor PTC in series. 4. The high-capacity 9-volt lithium-manganese soft-package battery structure according to claim 1 or 2, characterized in that the three soft-package batteries (2) connected in series are provided with straps (29).

Images