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Battery and manufacturing method

A technology for batteries and battery cells, applied in secondary batteries, battery pack components, and final product manufacturing, etc., can solve problems such as sharp material piercing, low mechanical strength, and potential safety hazards, and achieve improved mechanical strength and low manufacturing costs. , Good operability effect

Inactive Publication Date: 2010-06-30
SHENZHEN BAK BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum-plastic composite film is generally made of PP and aluminum foil through multi-layer compounding. Its mechanical strength is low, and it is easy to be pierced by sharp substances during manufacturing and use, resulting in scrapping or scratching, resulting in safety hazards.

Method used

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  • Battery and manufacturing method
  • Battery and manufacturing method
  • Battery and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Step 101, such as image 3 , Figure 4 and Figure 5 As shown, a battery unit 3 with a positive terminal 4 and a negative terminal (set in parallel with the positive terminal, not shown) is prepared, and an aluminum plate with a thin plate structure of a certain size is cut as the substrate 1 and has a thin plate structure. The aluminum-plastic composite film (also called aluminum-plastic composite film) of the layered structure composite board of the structure is used as the layered structure composite board 2;

[0056] Step 102, such as Figure 6 As shown, the laminated structure composite plate 2 is stamped so that a cavity 5 and a second cavity 7 with a peripheral edge 6, which can accommodate the battery unit 3, are formed;

[0057] Step 103, such as Figure 7As shown, the battery unit 3 is placed into the cavity 5 so that the positive terminal 4 and the negative terminal protrude from the peripheral edge 6; the peripheral edge 6 of the laminated composite plat...

Embodiment 2

[0065] Example 2: This example is basically the same as Example 1, except that the compounding temperature in step 103 is 120°C.

[0066] The processed battery was tested for shell connection peel strength, and the test results are shown in Table 5.

[0067] Sample No.

[0068] Sample No.

[0069] table 5

Embodiment 3

[0070] Example 3: This example is basically the same as Example 1, except that the compounding temperature in step 103 is 140°C. The processed battery was tested for shell connection peel strength, and the test results are shown in Table 6.

[0071] Sample No.

[0072] Table 6

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Abstract

The invention discloses a battery which comprises a shell body and a battery unit sealed in the shell body. The battery unit is provided with an anode lead-out end and a cathode lead-out end. The shell body comprises a base plate and a composite plate. The base plate and the composite plate are connected to form an enclosed cavity body used for containing the battery unit. The battery unit is arranged in the enclosed cavity body. The invention further discloses a battery manufacturing method. The invention has the following characteristics: the metal base plate is adopted as one part of the shell body, so that the battery in the invention inherits the anti-explosion safety performance of the flexibly-packaged battery, the mechanical intensity of the shell body is enhanced, the shell body of the battery cannot be easily punctured, and the mechanical safety performance of the battery in using and manufacturing is greatly improved; moreover, compared with the composite plate, the base plate needs extremely low manufacturing cost; therefore, the production cost of the battery can be reduced.

Description

technical field [0001] The invention relates to a soft package battery, and also relates to a manufacturing method of the soft package battery. Background technique [0002] In a lithium-ion battery, in addition to the positive and negative electrodes, electrolyte and separator paper, the casing that stores the various reaction components of the lithium-ion battery is also a very important component. As an effective component, in addition to providing the storage function, the casing will also provide the electrode extraction function for the lithium-ion battery, and at the same time provide certain help for the safety of the lithium-ion battery. [0003] At present, the materials used for the battery case mainly include: stainless steel, nickel-plated steel, aluminum alloy, and aluminum-plastic film. The aluminum-plastic film is soft, so the battery using the aluminum-plastic film as the casing is also a soft-packed battery, which has attracted much attention because of it...

Claims

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Application Information

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IPC IPC(8): H01M10/38H01M2/02H01M50/105H01M50/119H01M50/121H01M50/122H01M50/124H01M50/129H01M50/136H01M50/14H01M50/143H01M50/30H01M50/609
CPCY02E60/12H01M2/0222H01M2/345H01M2/0202H01M2/0295H01M2/347H01M2/0275H01M2/0285Y02E60/10H01M50/109H01M50/579H01M50/578Y02P70/50H01M50/105H01M50/121H01M50/129H01M50/136H01M50/119
Inventor 王伟强张性双邹晓兵王驰伟马振德
Owner SHENZHEN BAK BATTERY CO LTD
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