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Battery charging method and device, electronic equipment and storage medium

A battery charging and power battery technology, applied in battery/fuel cell control devices, charging stations, electric vehicles, etc., can solve the problems of reduced battery service life, long charging time, and low charging capacity, so as to prolong the service life and shorten the battery life. The effect of low temperature charging time

Pending Publication Date: 2022-07-22
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this low-temperature charging method takes a long time to charge, and the charging capacity is small, and serious lithium precipitation may occur during low-temperature cycle charging, which reduces the service life of the battery.

Method used

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  • Battery charging method and device, electronic equipment and storage medium
  • Battery charging method and device, electronic equipment and storage medium
  • Battery charging method and device, electronic equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 A flowchart of a battery charging method is provided for the first embodiment of the present invention. This embodiment can be applied to the situation where the battery generates heat inside the battery without external heating, so that the battery can be charged normally in a low temperature environment. The method may be performed by a battery charging device, which may be implemented in the form of hardware and / or software, and may be configured in a server, a personal computer, or a car battery. like figure 1 As shown, the method includes:

[0034] S101. Acquire charging data obtained by charging the power battery by using a pulse charging method and discharge data obtained by discharging the power battery by using a pulse discharging method.

[0035] A power battery is a secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive and negative electrodes to work.

[0036] The charging data obtained wh...

Embodiment 2

[0052] This embodiment is a refinement of each step of the above-mentioned embodiment, and the method includes:

[0053] S201. Acquire charging data obtained by charging the power battery by using a pulse charging method and discharge data obtained by discharging by using a pulse discharging method.

[0054] Figure 2a It is a flowchart of a method for obtaining charging data of a power battery using pulse charging provided according to the second embodiment of the present invention, as shown in the following figure: Figure 2a As shown, in some embodiments of the present invention, S201 includes:

[0055] S2011 , at a preset temperature, use the first charging rate to perform a capacity test on the power battery to obtain a first charging capacity.

[0056] The first charging rate is a fixed pulse current rate value used to test the charging capacity of the power battery. When acquiring the charging data of the power battery using pulse charging, there are several differen...

Embodiment 3

[0181] image 3 This is a schematic structural diagram of a battery charging device provided in Embodiment 3 of the present invention. like image 3 As shown, the device includes:

[0182] The data acquisition module 301 is used for acquiring charging data obtained by charging the power battery by using a pulse charging method and discharge data obtained by discharging by using a pulse discharging method;

[0183] A safe pulse current determination module 302, configured to determine the safe pulse current of the power battery at the actual ambient temperature based on the charging data and the discharge data, where the safe pulse current indicates that the power battery is at the actual ambient temperature The maximum current value that the down charging can withstand;

[0184] a preheating module 303, configured to apply the safe pulse current to the power battery at the actual ambient temperature to preheat the power battery;

[0185] The charging module 304 is used for...

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Abstract

The invention discloses a battery charging method and device, electronic equipment and a storage medium. Acquiring charging data of the power battery adopting pulse charging and discharging data of the power battery adopting pulse discharging; determining a safety pulse current of the power battery at the actual environment temperature based on the charging data and the discharging data, wherein the safety pulse current represents a maximum current value which can be borne by the power battery at the actual environment temperature; safe pulse current is applied to the power battery at the actual environment temperature so as to preheat the power battery; and charging the preheated power battery. The maximum safe pulse current capable of being borne under the endurance capacity of the power battery is determined, and the high-frequency safe pulse current is applied to the power battery, so that the battery can generate heat and preheat the power battery, the lithium precipitation phenomenon is avoided while the low-temperature charging time is shortened, and the service life of the power battery is prolonged. The low-temperature charging of the battery in different scenes is facilitated, and the service life of the battery is prolonged.

Description

technical field [0001] The present invention relates to the technical field of power battery charging, and in particular, to a battery charging method, device, electronic device and storage medium. Background technique [0002] With the increasing application of new energy vehicles, the usage of power batteries is also increasing. One of the main problems facing new energy vehicles at present is that the cruising range is greatly shortened in low temperature environments, and the performance of power batteries is limited when the ambient temperature is low. First, the discharge capacity of the power battery in a low temperature environment is seriously reduced, and secondly, the power battery cannot be directly charged in a low temperature environment. [0003] At present, new energy vehicles will preheat the battery pack before charging in a low temperature environment, but there are still many safety hazards, such as uneven heating of the power battery, uncontrolled tempe...

Claims

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Application Information

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IPC IPC(8): B60L53/62B60L58/27
CPCB60L53/62B60L58/27
Inventor 苑丁丁蹇兴文王华
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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