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Optimum layout of power battery electrodes and ultrasonic welding method and device

A technology for ultrasonic welding and power batteries, which is applied in welding equipment, non-electric welding equipment, battery pack components, etc., can solve problems such as explosion, battery heating, and aggravated thermal effects, so as to improve safety, reduce internal resistance, and increase overheating. flow effect

Active Publication Date: 2017-02-22
GUANGZHOU NEWPOWER ULTRASONIC ELECTRONICS EQUIP
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Problems solved by technology

The problem is that the electrons are only in a narrow flow space, and the narrow flowing electric field is in an over-crowded state, especially when the battery is in high-power, high-density electricity and continuous long-term operation, based on the unreasonable orientation of the electrons in the battery, resulting in The thermal effect is intensified, and the battery heats up and even explodes

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  • Optimum layout of power battery electrodes and ultrasonic welding method and device
  • Optimum layout of power battery electrodes and ultrasonic welding method and device
  • Optimum layout of power battery electrodes and ultrasonic welding method and device

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Optimized layout of power battery electrodes, such as Figure 8-10 As shown, in the single battery, the lead-out positions of the positive electrode and the negative electrode are set in the opposite direction of the maximum distance. The positive electrode and the negative electrode may be respectively located on both sides of the single battery with the largest distance. In this way, when the battery is working, the electrons flow in the distance between the two opposite ends, and the widest channel flow given by the effective cross-sectional area of ​​the space in the battery can be fully utilized to fully mobilize the best flow of electrons in the battery. Conditions, so that the internal resistance of the running channel is the smallest, so that the thermal effect of the battery can be minimized and heat generation can be avoided...

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Abstract

The invention discloses an optimized arrangement of electrodes of a power battery. In a single battery, the lead-out positions of a positive electrode and a negative electrode are arranged in the opposite direction of the maximum distance. The invention also discloses an ultrasonic welding method for optimizing the layout of power battery electrodes, the steps of which include: (1) placing the single battery on a welding platform, and the lead-out positions of the positive electrode and the negative electrode of the single battery are in opposite directions Setting, the battery pole pieces of the positive electrode and the negative electrode are extended and placed on the bottom mold; (2) using an ultrasonic roll welding mold device to perform roll welding such as connection, connection, etc. on the battery pole pieces placed on the bottom mold. The advantages and beneficial technical effects of the present invention are as follows: the welding efficiency is effectively improved, the internal resistance can be effectively reduced, the overcurrent can be increased, and the calorific value can be reduced.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of power batteries and ultrasonic welding, in particular to an optimized layout of power battery electrodes and an ultrasonic welding method and device. [0003] 【Background technique】 [0004] The power battery is a device that provides a power source for tools, and is mostly used as a battery for electric vehicles, electric trains, electric bicycles, and golf carts. In the production process of large-capacity power batteries, the welding of multi-layer pole pieces of power batteries and tabs or poles is a key factor affecting battery quality. At present, ultrasonic welding is mostly used for the welding of pole pieces and pole lugs or poles. However, general ultrasonic spot welding will damage the multi-layer pole pieces and tabs or poles of the power battery, which will affect the production qualification rate of the battery. In addition, due to the defects of the welding technology, the internal resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/26B23K20/10H01M50/536
CPCB23K20/103B23K20/26B23K2101/38H01M50/531Y02E60/10
Inventor 严卓晟严卓理严锦璇
Owner GUANGZHOU NEWPOWER ULTRASONIC ELECTRONICS EQUIP
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