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Flexible package battery module structure capable of being secondarily repaired and assembling and disassembling method

A soft-packed battery and module structure technology, applied in secondary batteries, battery pack components, batteries, etc., can solve the problems of low battery cell cycle performance and difficult reuse of battery cells, and achieve improved reliability and large capacity. The effect of current conductivity, reducing customer maintenance costs, and easy disassembly and maintenance

Pending Publication Date: 2020-11-10
上海轩邑新能源发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention proposes a secondary repairable flexible package battery module structure and assembly and disassembly methods, which can solve the technical problems that the existing battery cells are difficult to reuse and the internal cycle performance of the cells is low

Method used

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  • Flexible package battery module structure capable of being secondarily repaired and assembling and disassembling method
  • Flexible package battery module structure capable of being secondarily repaired and assembling and disassembling method
  • Flexible package battery module structure capable of being secondarily repaired and assembling and disassembling method

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0054] Figure 1-Figure 7 Shown is a schematic diagram of the structure of the soft-packaged battery cells in the embodiment of the present invention that is solder-free when the tabs are connected in groups of PACKs and when the batteries are fixed. In order to illustrate this mechanism, the structure of the positive terminal is taken as an example, and the structure of the negative terminal is the same.

[0055] This structure is made up of small wedge-shaped block 1, big wedge-shaped block 2, conductive shrapnel 3, fixed support 4. Among them, ...

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Abstract

The invention discloses a flexible package battery module structure capable of being secondarily repaired and an assembling and disassembling method. The technical problems that a battery cell is difficult to reuse and the internal cycle performance of the cell is relatively low can be solved. A conductive elastic sheet is inserted into a lug of a battery cell body, and a fixed bracket is arrangedat a positive end or a negative end of the battery cell body; end plates are arranged at two ends of the battery cell body in parallel; the heat-conducting plate is fixed at the bottoms of the two end plates; the large wedge-shaped blocks are sequentially inserted into the wedge-shaped holes of the fixed bracket; the small wedge-shaped blocks are sequentially wedged into one end of the large wedge-shaped block and wedged into the fixed bracket, so the large wedge-shaped block is wedged into a fixed position; and the conductive plate between the battery cells is placed between the battery cellbodies, and is tightly attached to and fixed with the conductive elastic sheet. Under the action of a wedge-shaped force, the reliability of mechanical contact electric conduction and the large-current electric conduction capacity are improved, series-parallel connection caused by tab welding is avoided, and secondary repairing and sorting of battery cells are achieved through reutilization; in addition, the battery system is convenient to disassemble and maintain a single battery cell, and the customer maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of new energy storage batteries, in particular to a secondary repairable flexible package battery module structure and assembly and disassembly methods. Background technique [0002] Power lithium-ion batteries have been popularized and applied in pure electric vehicles as an energy storage device. When the battery system decays to a certain extent, according to the regulations, when the energy of the general battery system decays to 70% or 80%, it is not enough to support the effective mileage of the car, and the battery system will be decommissioned, but there is still 10% or 20% more energy use value. Since both soft-packed batteries and square-shaped batteries currently use positive and negative welding methods to form a battery system, non-destructive disassembly cannot be achieved, so that the battery cannot be reused at the battery level; in addition, the attenuation of battery life, The vast majori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M2/04H01M2/20H01M2/22H01M2/36H01M10/625H01M10/647H01M10/655H01M10/6554
CPCH01M2220/20H01M10/625H01M10/647H01M10/655H01M10/6554Y02E60/10
Inventor 杨显生
Owner 上海轩邑新能源发展有限公司
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