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Lithium ion battery negative electrode substrate and preparation method thereof

A lithium-ion battery and negative electrode technology, applied in the field of lithium-ion battery negative electrode substrate and its preparation, can solve the problems of theft, difficult to find the server chassis of the backend server, low cost and the like

Inactive Publication Date: 2018-12-21
中安芯界(青岛)新能源科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0011] In order to prevent external bumps, the background server is arranged in a cuboid background server case, and the cover plate hinged on the background server case is selected as a general latch to close the background server case, so that the background server is only placed in the background server case. The problem of theft often occurs. If equipped with an electronic lock, the cost is not low and it attracts attention. It is often decrypted by someone to open the backend server case. Therefore, a server case with good protection and difficult to find the backend server is developed. Issues to be addressed

Method used

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  • Lithium ion battery negative electrode substrate and preparation method thereof
  • Lithium ion battery negative electrode substrate and preparation method thereof
  • Lithium ion battery negative electrode substrate and preparation method thereof

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Embodiment Construction

[0077] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0078] Such as Figure 1-Figure 17 As shown, the lithium-ion battery negative electrode base material includes a negative electrode current collector 2, and also includes a plurality of tabs welded on the negative electrode current collector 2, and the number of the tabs is 2-6;

[0079] Traditional lithium-ion batteries often lead to large internal resistance while pursuing high energy density, which reduces the overall power performance of the battery. Here, the multi-tab structure is used to optimize the structure of the battery negative pole piece. Since the negative pole piece has multiple tabs, the electron transmission channel is greatly increased and the current density is reduced, thereby reducing the polarization effect, significantly reducing the internal resistance of the battery, and improving the battery capacity. High rate discharge perf...

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Abstract

The invention discloses a lithium ion battery negative electrode substrate and a preparation method thereof. The lithium ion battery negative electrode substrate comprises a negative current collectorand a plurality of tabs welded to the negative current collector. The negative current collector is a copper foil, and a plurality of small holes with diameters of 20-25 [mu]m are drilled on the copper foil material by laser. A control system adopts a controller which is connected with a wireless communication module so as to be connected with a background server. In combination with other structures and preparation methods, the lithium ion battery negative electrode substrate and the preparation method thereof can effectively avoided the defects in prior art: the battery negative electrode is heavy in weight and large in volume, so that the product is heavy in weight and large in compacted thickness, and the background server is placed in the server chassis and easy to be stolen; in sucha case, the equipped electronic lock will be decrypted and the server chassis is opened, the identifier of the monitoring personnel of the vacuum baking intelligent system will be stolen by some unconscious person; and accordingly the confidentiality of the temperature information transmission in the vacuum baking intelligent system will be reduced.

Description

technical field [0001] The invention relates to the technical field of lithium ion battery preparation, in particular to a lithium ion battery negative electrode substrate and a preparation method thereof. Background technique [0002] With the increasingly serious problems of environmental pollution and energy crisis, vacuum baking intelligent systems such as electric vehicles have been vigorously promoted and gradually favored by people because of their environmental friendliness. Therefore, it is urgent to develop electric vehicle power sources with high energy density and high power. Lithium-ion power batteries have become the preferred power source for vacuum baking intelligent systems due to their high energy density, long cycle life, and environmental friendliness. [0003] Lithium batteries have the advantages of high voltage, large specific energy, long charge and discharge life, and safety and environmental protection. Therefore, they are widely used in various ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
CPCG05D23/20
Inventor 黄进德
Owner 中安芯界(青岛)新能源科技有限公司
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