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Combination structure and method of lithium battery packs

A combined structure and technology of lithium battery packs, applied to battery pack parts, secondary batteries, structural parts, etc., can solve problems such as low safety factor, inability to replace batteries, and inability to isolate batteries, etc., to achieve easy Replacement, the effect of high safety factor

Active Publication Date: 2015-04-29
SHENZHEN CLOU ELECTRONICS
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  • Abstract
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Problems solved by technology

[0003] However, the existing battery packs (Battery Pack) are all connected by spot welding or laser welding, which requires relevant tools and equipment during production, so that the batteries cannot be replaced during maintenance; at the same time, nickel sheets are used Or after the copper sheet welds the battery together, all the batteries are a whole. When a single battery fails, it cannot be isolated, and the safety factor is not high.

Method used

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  • Combination structure and method of lithium battery packs
  • Combination structure and method of lithium battery packs
  • Combination structure and method of lithium battery packs

Examples

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Embodiment Construction

[0024] Please refer to figure 1 , is a schematic diagram of the combined structure of the lithium battery pack in one embodiment.

[0025] The combined structure of the lithium battery pack includes a lithium battery assembly 110 and a printed circuit board 120 . The lithium battery assembly 110 includes a lithium battery group formed by connecting two or more lithium batteries in parallel, and connecting pieces. Different lithium battery groups are connected to each other in series. The two poles of the lithium battery are welded to the printed circuit through the connecting piece On the board 120 , the printed circuit board 120 is provided with traces for making the lithium battery form a lithium battery pack combination.

[0026] In this embodiment, the connection sheet is a nickel sheet or a copper sheet with soldering pins.

[0027] The combined structure of the lithium battery pack also includes a short-circuit protection device integrated on the printed circuit board ...

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Abstract

A combination structure of lithium battery packs comprises lithium battery assemblies and a printed circuit board, wherein each lithium battery assembly comprises a lithium battery pack formed by more than two lithium batteries connected in parallel as well as connecting pieces; different lithium battery packs are mutually connected in series, and two poles of each lithium battery are welded on the printed circuit board through the connecting pieces; wiring enabling the lithium batteries to form the lithium battery pack combination is arranged on the printed circuit board. The invention further discloses a combination method of the lithium battery packs. With the adoption of the combination structure and method of the lithium battery packs, cells are easy to replace, and the safety coefficient is high.

Description

technical field [0001] The invention relates to the application field of lithium batteries, in particular to a combined structure and method of a lithium battery pack. Background technique [0002] In some large-capacity energy storage applications such as electric vehicles, solar energy storage power stations, etc., it is necessary to use some large-capacity battery packs, which we call Pack. Usually these large-capacity packs are composed of small-capacity batteries through serial-parallel connection. At the same time, some signal lines, power lines, and temperature acquisition lines need to be led out to BMS (Battery Management System, battery management system) for corresponding collection and management. [0003] However, the existing battery packs (Battery Pack) are all connected by spot welding or laser welding, which requires relevant tools and equipment during production, so that the batteries cannot be replaced during maintenance; at the same time, nickel sheets a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M2/26H01M50/503H01M50/509H01M50/519H01M50/522H01M50/569H01M50/583
CPCH01M10/0525H01M10/058H01M50/50Y02E60/10Y02P70/50
Inventor 李培江
Owner SHENZHEN CLOU ELECTRONICS
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