Power supply module of electrical vehicle and connection method

Abstract

The invention relates to the technical field of vehicle power supply, and particularly relates to a power supply module of an electrical vehicle and a connection method. The power supply module includes: a plurality of positive cell units, wherein each positive cell unit is provided with a fixing frame and two aluminium tabs which stretch out from one side edge of the fixing frame; a plurality of negative cell units which are arranged at intervals with the plurality of positive cell units, wherein each negative cell unit is provided with a fixing frame and two copper tabs which stretch out from one side edge of the fixing frame; and a plurality of busbars which are used for connecting the positive cell units with the negative cell units in series. Each aluminium tab of each positive cell unit and each adjacent copper tab of each adjacent negative cell unit are respectively welded to each busbar. The power supply module of the electrical vehicle has small contact impedance at a connecting position, is not easy to heat, is high in efficiency, is free from loosening during an operation process and is good in safety. The connection method of the power supply module of the electrical vehicle is safe and reliable.

Description

technical field [0001] The invention relates to the field of automobile power supply, in particular to an electric automobile power supply module and a connection method. Background technique [0002] The modular design of electric vehicle power supply has become an inevitable trend in the development of power supply systems; the invention of Chinese patent notification number CN102306717A discloses a lithium-ion power battery pack for electric vehicles and a manufacturing method thereof. The lithium-ion power battery pack for electric vehicles , comprising a battery pack casing and a battery pack cover adapted to the battery pack casing, a battery module is arranged inside the battery pack casing; an insulating layer I is provided between the battery module and the battery pack cover, An insulating layer II is provided between the battery pack shell surface facing the battery pack cover and the battery module; the battery pack shell is provided with a quick connector connec...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the connection between the battery units of the current electric vehicle power module, which has a large contact impedance at the connection, is easy to generate heat, has a low efficiency, and will cause loosening and potential safety hazards due to vibration during use; The contact resistance at the connection is small, it is not easy to heat up, the efficiency is high, and it will not loosen during use. The electric vehicle power module and connection method are good and safe.

The electric vehicle power supply module has a small contact impedance at the connection, is not easy to generate heat, has a high efficiency, and will not loosen during use and is safe.

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