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Pole core, battery and battery module

A pole core and battery technology, which is applied to battery components, lithium batteries, secondary batteries, etc., can solve the problem of slow battery temperature rise and achieve the effect of increasing the warm-up rate

Pending Publication Date: 2022-04-15
BYD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present application is to provide a pole core that can solve the problem of slow temperature rise during the battery preheating process

Method used

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  • Pole core, battery and battery module
  • Pole core, battery and battery module
  • Pole core, battery and battery module

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0034] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein. Moreover, the objects distinguished by "first...

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Abstract

The invention discloses a pole core, a battery and a battery module, and belongs to the technical field of batteries. The pole core is provided with two working tabs and two heating tabs, and the conductivity of a current collector where at least one heating tab is located is smaller than that of a current collector where the working tabs are located. In the embodiment of the invention, the heating loop formed by conducting the external equipment through the heating tab is used for preheating and charging the battery, and the working tab is used for conducting the external equipment for charging after preheating is completed. And the conductivity of the preset current collector is smaller than that of the basic current collector, so that the battery can be rapidly heated during preheating charging, and the preheating rate is increased.

Description

technical field [0001] The present application belongs to the technical field of batteries, and in particular relates to a pole core, a battery and a battery module. Background technique [0002] At present, the material of the positive electrode current collector in the battery is aluminum foil, and the material of the negative electrode current collector is copper foil. The resistivity of copper foil and aluminum foil is extremely low. When charging the battery, copper foil and aluminum foil generate less heat. Especially when charging at low temperature, heat needs to be generated quickly to increase the temperature of the pole piece to increase the reaction rate of the negative electrode and improve the charging capacity. In the prior art, the temperature of the battery is raised by applying pulse current before charging. However, this method raises the temperature slowly, which will cause the charging rate under low temperature conditions to be greater than the lithium...

Claims

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Application Information

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IPC IPC(8): H01M10/0585H01M50/54H01M10/052H01M10/615H01M10/654
CPCY02P70/50Y02E60/10
Inventor 杜木挺张亚楠
Owner BYD CO LTD
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