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Cylindrical lithium ion battery formation and capacity grading device

A lithium-ion battery, cylindrical technology, applied in the direction of cylindrical shell battery/battery, battery electrode, secondary battery, etc., can solve the problem of affecting the accuracy of battery capacity testing, affecting battery quality and production safety, battery abnormality or fire, etc. problems, to achieve high profile height, improve efficiency and safety, and save land occupation

Pending Publication Date: 2019-03-29
ZHEJIANG HANGKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the frequent impact on battery quality and production safety in the existing cylindrical lithium-ion battery formation and capacity process, such as the large temperature difference inside the tray due to the heating of the battery during charging and discharging, which seriously affects the accuracy of battery capacity testing. characteristics, as well as battery abnormalities or fires caused by battery defects or equipment defects, a safe and effective cylindrical lithium-ion battery formation and capacity device that prevents fire is proposed

Method used

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  • Cylindrical lithium ion battery formation and capacity grading device
  • Cylindrical lithium ion battery formation and capacity grading device
  • Cylindrical lithium ion battery formation and capacity grading device

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Embodiment 1

[0035] Embodiment 1 A cylindrical lithium-ion battery chemical composition and capacity device according to the present invention includes a frame 1, a charging and discharging power supply box 2 for charging and discharging a cylindrical lithium-ion battery, and a charging and discharging power supply box 2 for clamping a cylindrical lithium-ion battery. The battery clamping mechanism 3 for the positive and negative poles of the battery, the battery tray 4 for placing the cylindrical lithium-ion battery, and the controller. position; each processing station is equipped with the charging and discharging power supply box and the battery clamping mechanism; the power transmission end of the charging and discharging power supply box is electrically connected with the power transmission terminal of the battery clamping mechanism; the charging and discharging power supply The control end of the box and the control end of the battery clamping mechanism are respectively connected to t...

Embodiment 2

[0047] Embodiment 2 A cylindrical lithium-ion battery formation and storage device according to the present invention: the battery tray is placed in the battery clamping movement mechanism when it is working, and placed outside the frame when it is not working. The charging and discharging power supply box and the battery clamping movement mechanism are electrically connected to each other in the frame by connecting wire bundles.

[0048] The charging and discharging power box is an energy recovery charging and discharging power box, which can charge and discharge 256-400 batteries at the same time. The electronic circuit includes: a bidirectional DC / DC unit for charging and discharging a single cylindrical lithium-ion battery, a real-time high-precision high-speed sampling circuit for battery voltage and charging and discharging current, a charge-discharge constant voltage control circuit that accepts precise control, and a circuit that accepts precise control Charge and disc...

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Abstract

The utility model discloses a cylindrical lithium ion battery formation and capacity grading device. The device comprises a frame, a charging and discharging power box that is used for charging and discharging a cylindrical lithium ion battery, a battery clamping mechanism that is used for clamping the positive electrode and the negative electrode of the cylindrical lithium ion battery, a batterytray that is used for placing the cylindrical lithium ion battery, and a controller. The frame is provided with a plurality of layers of processing positions which are used for carrying out formationand capacity grading of the battery from top to bottom. Each layer of machining positions are provided with the charging and discharging power box and the battery clamping mechanism. The power transmission end of the charging and discharging power box is electrically connected with the power transmission end of the battery clamping mechanism. The control end of the charging and discharging power box and the control end of the battery clamping mechanism are in signal connection with the signal transmission port of the controller, thereby achieving the control of the charging and discharging power box and the battery clamping mechanism. The invention has the beneficial effects that the device can complete two procedures of formation and capacity grading of the soft package lithium ion battery, and the battery quality and the system safety can be effectively improved through the constant temperature and safety functions of the device.

Description

technical field [0001] The invention relates to a cylindrical lithium ion battery composition and capacity equipment. Background technique [0002] In the production process of cylindrical lithium-ion batteries, formation and capacity separation are very important processes. Formation is the use of electric energy to activate the internal activity of the battery and form an SEI film on the negative electrode of the battery. Good-quality formation equipment can ensure that the battery has a relatively high performance. Good charge and discharge performance and cycle life, the capacity is to carry out several full load charge and discharge cycles on the activated battery, test the DC internal resistance, charge and discharge voltage, constant current discharge, constant voltage discharge, constant power discharge characteristics, Grouping is used to select batteries with the same electrical parameters for series and parallel applications to reduce the short board effect after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H01M10/42H01M10/058
CPCH01M10/058H01M10/4285H01M10/441H01M10/446Y02E60/10Y02P70/50H01M10/0525H01M50/213H01M50/264H01M10/486H01M10/48H01M10/0587H01M10/0422H01M10/0409H01M10/049H01M4/0447H02J7/0069G01R31/3865H01M10/63H01M10/6563
Inventor 曹骥曹政桑宏宇
Owner ZHEJIANG HANGKE TECH