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Battery and movable electric equipment

A battery and cell technology, applied in the field of batteries and mobile electrical equipment, can solve the problems of short circuit between positive and negative plates, easy to pierce the diaphragm of positive and negative plates, safety problems, etc. Quality and safety performance, the effect of reducing the workload

Pending Publication Date: 2020-09-18
ZHUHAI COSMX BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the pole piece and the tab of the lithium-ion battery are welded together by ultrasonic waves. However, after the ultrasonic welding is completed, needle-shaped welding protrusions will be formed on the side of the pole piece. The diaphragm between the positive electrode and the negative electrode will cause a short circuit, which may cause serious safety problems

Method used

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  • Battery and movable electric equipment
  • Battery and movable electric equipment
  • Battery and movable electric equipment

Examples

Experimental program
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Embodiment 1

[0035] figure 2 A cross-sectional view of the linear welding mark formed after welding the pole piece and the tab of the battery provided by Embodiment 1 of the present invention; image 3 A schematic diagram of the structure of the pole piece side of the battery after welding the pole piece and the tab provided by Embodiment 1 of the present invention; Figure 4 A schematic diagram of the structure of the pole piece of the battery core and the tab side after welding provided by Embodiment 1 of the present invention; Figure 5 It is a microscope image of the linear welding mark formed after welding the pole piece and the tab of the battery provided in Example 1 of the present invention.

[0036] refer to Figure 2 to Figure 5 As shown, the present embodiment provides a battery, which includes a casing and an electric cell disposed in the casing. Wherein, the battery cell may be a wound battery cell or a laminated battery cell.

[0037] Specifically, the winding battery in...

Embodiment 2

[0068] This embodiment provides a mobile power-consuming device, and the mobile power-consuming device includes a battery.

[0069] The mobile power consumption device in this embodiment includes a mobile terminal, and the mobile terminal may be, for example, a mobile phone, a notebook, a tablet computer, a POS machine, a vehicle-mounted computer, or a wearable device.

[0070] The battery in this embodiment has the same structure as the battery provided in Embodiment 1, and can bring about the same or similar technical effects, so details will not be repeated here, and details can be referred to the descriptions of the above embodiments.

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Abstract

The invention provides a battery and movable electric equipment. The battery comprises a shell and a battery cell arranged in the shell, wherein the battery cell comprises pole pieces and a pole lug which are connected into a whole, the pole piece comprises a current collector and an active substance layer, the current collector comprises a coating area coated with the active substance layer and an empty foil area not coated with the active substance layer, and one end of the pole lug is welded to the empty foil area through a laser welding process; a plurality of welding areas which are arranged at intervals are arranged on the surface, deviating from the pole lug, of the empty foil area, each welding area comprises at least one linear welding mark, and no welding mark is arranged on thesurface, deviating from the empty foil area, of the pole tube. A bulge formed after the pole piece and the pole of the battery are welded is not easy to pierce a diaphragm between the positive and negative pole pieces, so that short circuit can be prevented, and the quality and the safety performance of the battery are improved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a battery and a mobile electric device. Background technique [0002] Mobile electrical devices such as mobile phones, wearable devices, and computers have become indispensable mobile terminals in people's daily life. As we all know, the use of mobile terminals is inseparable from batteries, and existing batteries include various types such as lead storage batteries and lithium batteries. Among them, lithium-ion batteries have become the first choice for various mobile power devices due to their high energy density and environmental friendliness. [0003] Since the mobile electrical equipment is closely related to people's daily life, the safety performance of the mobile electrical equipment has become the focus of attention, especially the safety performance of the lithium-ion battery installed inside the mobile electrical equipment. [0004] At present, the pole pie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M4/13H01M4/139
CPCH01M4/13H01M4/139Y02E60/10H01M50/536H01M50/531H01M2220/30H01M50/566B23K26/22B23K2103/12B23K2103/10B23K2103/18B23K2101/36B23K2101/38B23K26/244B23K26/26Y02P70/50H01M10/049
Inventor 彭宁
Owner ZHUHAI COSMX BATTERY CO LTD