Cylindrical battery and energy storage device

A technology for cylindrical batteries and battery casings, which is applied in the direction of secondary batteries, battery electrodes, battery pack components, etc., and can solve the constraints of large-capacity single cylindrical batteries, application scenarios that cannot meet high-rate applications, and positive and negative electrode confluence Solve problems such as poor overcurrent capability, achieve the effect of improving overcurrent capability, tight and stable connection relationship, and increasing overcurrent capability

Pending Publication Date: 2022-04-15
JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Using the above method, when connecting the negative electrode lug to the shell, it is usually necessary to use processes such as nickel-to-nickel welding and spot bottom welding, resulting in complicated processes, high manufacturing costs, and poor current flow capacity at the junction of positive and negative electrodes. , which restricts the large-capacity design of a single cylindrical battery, and cannot meet high-rate application scenarios

Method used

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  • Cylindrical battery and energy storage device
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  • Cylindrical battery and energy storage device

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Embodiment Construction

[0026] In order to make the objects, technical solutions, and advantages of the present application, the technical solutions in the present application embodiment will be described in connext of the present application embodiment, and It is a part of the present application, not all of the embodiments. Components of the present application embodiments described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0027] Thus, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but only the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained without creative labor are not made in the pre-creative labor premises.

[0028] It should be noted that similar reference numerals and letters represent the similar items in the foll...

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Abstract

The invention discloses a cylindrical battery and an energy storage device, and relates to the technical field of energy storage. The cylindrical battery comprises a battery shell and a roll core arranged in the battery shell, the battery shell comprises a cover plate assembly and a bottom plate which are oppositely arranged, at least one end of the roll core is provided with a net-shaped current collector, the bottom plate and / or the cover plate assembly are / is provided with a plurality of protrusions corresponding to the current collector, and the protrusions are arranged on the bottom plate and / or the cover plate assembly. And the roll core is connected with the bulge through the current collector. The over-current capability at the confluence can be improved, so that the monomer capacity is improved, and the method is better suitable for a high-magnification application scene.

Description

Technical field [0001] The present application relates to the field of energy storage, and in particular, there is a cylindrical battery and an energy storage device. Background technique [0002] With the further expansion of the electric vehicle market and the continuous improvement of the continuous improvement of the mileage requirements, the vehicle companies put forward higher requirements on the power battery in energy density, manufacturing costs, cycle life and product additional attributes. At present, the lithium battery is stood out in numerous types of batteries with the advantages of high voltage density, high voltage, long operating temperature range and long life. Among them, the secondary lithium battery is gradually incorporated into the market, and the common shapes of the lithium-ion battery are mainly cylindrical and square. [0003] The inside of the conventional cylindrical secondary lithium battery is: first fabricate the core, by a layer of positive elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/74H01M50/533H01M50/536H01M10/0525H01M10/0587
CPCH01M4/745H01M50/533H01M50/536H01M10/0587H01M10/0525Y02E60/10Y02P70/50
Inventor 陈圣立张瑞朋黄双浩於洪将金标
Owner JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
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