Current interruption device as well as nicking part, battery cover plate component, monomer battery, battery module, power battery and electric vehicle thereof

A current interruption device and battery cover technology, which is applied to battery pack parts, battery cover/end cover, electrical components, etc., can solve the problems of battery voltage and current sampling failure, explosion, and long-term charging of the battery that cannot be controlled.

Pending Publication Date: 2019-06-21
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also deficiencies, such as battery voltage sampling or current sampling failure, or software failure, resulting in uncontrolled battery charging for a long time, especially in the case of charging piles, when the communication between the charging pile and the battery manager fails, overcharging Uncontrollable, if the battery is overcharged to a certain extent, it will cause the battery to swell or even explode and catch fire

Method used

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  • Current interruption device as well as nicking part, battery cover plate component, monomer battery, battery module, power battery and electric vehicle thereof
  • Current interruption device as well as nicking part, battery cover plate component, monomer battery, battery module, power battery and electric vehicle thereof
  • Current interruption device as well as nicking part, battery cover plate component, monomer battery, battery module, power battery and electric vehicle thereof

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Embodiment Construction

[0028] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0029] In this disclosure, unless stated otherwise, the orientation words used such as "up, down, left, right" are usually defined based on the directions of the corresponding drawings, and "inner and outer" refer to Inside and outside of the corresponding part contour.

[0030] Such as Figure 1 to Figure 6 As shown, the present disclosure provides a current interrupting device and its scoring part, flipping part, a battery cover assembly using the current interrupting device, a single battery using the battery cover assembly, and a battery using the single battery A module, a power battery using the battery module and a technical solution for a vehicle us...

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Abstract

The invention discloses a current interruption device as well as a nicking part, a battery cover plate component, a monomer battery, a battery module, a power battery and an electric vehicle thereof.The nicking part comprises a nick area with a nick formed, a first welding zone used for being mutually electrically connected with a turnover part as well as a second welding zone used for being electrically connected with a terminal in an electrode, the turnover part can act under the action of gas pressure, so as to disconnect an electrical connection with the nicking part by breaking the nick,and the nick surrounds the first welding zone and is arranged in a different plane with the first welding zone and/or second welding zone. The nick on the nicking part is in a different plane with atleast one of the first welding zone and the second welding zone, so that mechanical shock caused by an external force transmitted by the turnover part on the nick on the nicking part can be effectively eliminated, heat effect of welding stress of the first welding zone on a region where the nick is located also can be eliminated, and reliability of the current interruption device is enhanced.

Description

technical field [0001] The present disclosure relates to the field of batteries, in particular, to a current interruption device and its scoring member, a battery cover assembly using the current interruption device, a single battery using the battery cover assembly, and a battery using the single battery module, the power battery using the battery module and the vehicle using the power battery. Background technique [0002] As an energy storage unit, batteries play an important role in all walks of life. For example, power batteries are widely used in new energy vehicles and other fields. The battery pack of the power battery can have multiple single batteries connected in series or in parallel to form a battery module. Realize the work of charging and discharging. Among them, during the charging and discharging process of the power battery, BMS (battery management system) is usually used to monitor the changes of voltage and current to calculate the state of charge. If t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/34H01M50/147H01M50/209H01M50/50H01M50/574
CPCY02E60/10H01M50/147H01M50/50H01M50/209H01M50/574
Inventor 蒋露霞王飞飞汤道毅程晗朱建华
Owner BYD CO LTD
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