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Cell assembly method and device

A cell, charging and discharging technology, applied in the automotive field, can solve the problems of poor cell consistency, short vehicle running mileage, voltage difference variation, etc., to avoid cell damage, improve battery quality, and ensure consistency.

Active Publication Date: 2019-01-29
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a big difference between the state of the batteries in the static state and the state of the batteries in the actual operation of the vehicle.
Because the internal resistance and voltage difference of the battery change greatly during the dynamic charging and discharging process, the battery cells will be damaged during the charging and discharging process at the same rate, and the consistency of the battery cells will become worse and worse after the vehicle has been running for a period of time. The mileage of the vehicle is getting shorter and shorter

Method used

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  • Cell assembly method and device
  • Cell assembly method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] Example 1: Set dynamic grouping information including the correspondence between vehicle characteristic information and charging and discharging conditions, so as to query the dynamic grouping information to obtain charging and discharging conditions corresponding to vehicle characteristic information.

[0041] For example, if the characteristic information of the vehicle is pure electric vehicle type, the corresponding charging and discharging working conditions are set as: 30 amps for 40 minutes of charging. The characteristic information of the vehicle is pure electric vehicle type and the charging and discharging conditions corresponding to the utility of the off-road vehicle are: charging for 60 minutes at 50 amps; discharging for 50 minutes at 40 amps. When the characteristic information of the vehicle is the type of pure electric vehicle, the charging and discharging working conditions corresponding to the type of pure electric vehicle obtained by querying the dyn...

example 2

[0042] Example 2, by presetting the configuration relationship between the vehicle characteristic information and the charging and discharging working conditions, after obtaining the vehicle characteristic information, process the vehicle characteristic information according to the preset configuration relationship to determine the charging and discharging working conditions.

[0043] For example, it is determined that the characteristic information of the vehicle is the type of pure electric vehicle, and then through the pre-set calculation relationship between the type of pure electric vehicle and the charging and discharging conditions, the charging and discharging conditions corresponding to the type of pure electric vehicle are obtained as Charge for 40 minutes at 30 amps.

[0044] In order to more clearly illustrate the charging and discharging conditions corresponding to the above-mentioned vehicle characteristic information, the vehicle type, vehicle usage, and the regi...

example 3

[0052]The characteristic information of the vehicle includes the type of the vehicle, the purpose of the vehicle, and the region to which the vehicle belongs: the purpose of the vehicle is an ordinary car, an off-road vehicle, etc. The vehicle types are pure electric, hybrid and so on. The region where the whole vehicle belongs is Beijing, Shenzhen, etc.

[0053] For example, among them, Shenzhen is relatively humid compared to Beijing, which has a greater impact on battery performance. The charging and discharging conditions corresponding to pure electric off-road vehicles in Shenzhen are: 40 amps for 50 minutes of charging; 35 amps for 40 minutes of discharging. The charging and discharging conditions corresponding to hybrid ordinary cars in Beijing are: 40 amps for 40 minutes of charging; 35 amps for 30 minutes of discharging.

[0054] It should be noted that the vehicle feature information may be selected according to actual application requirements, and may include one o...

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Abstract

The invention discloses a battery core assembling method and apparatus. The method comprises the following steps: acquiring charge and discharge conditions corresponding to integral vehicle characteristic information; inputting the charge and discharge conditions to a plurality of capacity grading cabinets to make the plurality of the capacity grading cabinets simultaneously run the charge and discharge conditions, and outputting battery core condition information corresponding to the plurality of the capacity grading cabinets; and analyzing the battery core condition information according to preset matching parameter information, and outputting a battery core assembling result. Battery core assembling is carried out according to the battery core condition information in the charge and discharge condition process corresponding to the integral vehicle characteristic information in the embodiment of the invention, so battery core damages are avoided, the consistence of battery cores is guaranteed, and the quality of a battery is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a battery cell matching method and device. Background technique [0002] With the development and popularization of electric vehicles, the mileage of vehicles is an important indicator for users to choose electric vehicles. Whether it is a pure electric vehicle equipped with only a battery or a hybrid vehicle equipped with a traditional engine (or fuel cell) and battery, the battery is the main factor that determines the mileage of the vehicle. [0003] The storage part of the battery is the cell, and the quality of the cell directly determines the quality of the battery. In related technologies, the power battery grouping method is mainly in the static state of the battery cells, that is, the battery cells are grouped according to the cell voltage, internal resistance, and capacity when the cells are not being charged or discharged. [0004] However, there is a big differe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/344B07C5/38G01R31/36
CPCB07C5/344B07C5/38B07C2301/0008G01R31/396
Inventor 陈涛刘宇强
Owner BEIJING ELECTRIC VEHICLE