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Battery charging method and device and battery system

A charging method and battery technology, which are applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as the destruction of the crystal form of the cathode material, the attenuation of battery capacity, and the attenuation of battery energy.

Inactive Publication Date: 2018-12-18
NINGDE AMPEREX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, in the existing high-power charging technology, as the cycle time of the battery increases, the polarization of the battery becomes larger, and the cathode and anode of the battery will accumulate a large amount of by-products, which will accelerate the destruction of the crystal form of the cathode material. , and lead to rapid oxidative decomposition of the electrolyte, which will accelerate the sharp attenuation of battery energy and battery capacity, and affect the service life of the battery

Method used

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  • Battery charging method and device and battery system
  • Battery charging method and device and battery system
  • Battery charging method and device and battery system

Examples

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Embodiment 1

[0115] The embodiment of the present invention provides a battery charging method, please refer to figure 1 , which is a schematic flow chart of Embodiment 1 of the battery charging method provided by the embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0116] S101. Obtain battery status information.

[0117] Specifically, in the embodiment of the present invention, the state information of the battery may include but not limited to at least one of the number of cycles of the battery, the accumulated time of the battery, the capacity state information of the battery, and the energy state information of the battery. In addition, the state information of the battery may also include relevant data such as the temperature of the battery.

[0118] Specifically, in the embodiment of the present invention, the cycle number of the battery may include but not limited to at least one of the total cycle data of the battery and the cycle number int...

Embodiment 2

[0134] Based on the battery charging method provided in Embodiment 1 of the present invention, the embodiment of the present invention specifically describes the implementation of "obtaining battery status information" in S101 in Embodiment 1.

[0135] In the embodiment of the present invention, the state information of the battery includes the number of cycles of the battery and the cumulative time of the battery. The following describes the implementation of obtaining the number of cycles of the battery, the realization of the cumulative time of the battery, and the method of obtaining the battery. The realization method of the capacity state information and the realization method of obtaining the energy state information of the battery.

[0136] In the first aspect, the number of cycles of the battery is obtained.

[0137] Specifically, in the embodiment of the present invention, if the state information of the battery is the cycle number of the battery, obtaining the state...

Embodiment 3

[0190] Based on the battery charging method provided in Embodiment 1 of the present invention, this embodiment of the present invention specifically describes the implementation of "judging whether the condition for reducing the charging power of the battery is satisfied according to the state information of the battery" in S102 in Embodiment 1.

[0191] Specifically, according to the obtained state information of the battery, it is judged whether the condition for reducing the charging power of the battery is met, which may include but not limited to the following four implementation methods:

[0192] The first method: if the obtained battery state information is the cycle number of the battery, compare the battery cycle number with the corresponding number threshold; when the battery cycle number is the corresponding number threshold, it is judged that the condition for reducing the charging power of the battery is satisfied ; or, when the cycle number of the battery is not e...

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Abstract

The embodiment of the invention provides a battery charging method and device and a battery system. The embodiment of the invention acquires the state information of the battery, and judges whether the condition of reducing the charging power of the battery is satisfied or notaccording to the state information of the battery, when it is determined that the condition of reducing the charging powerof the battery is satisfied, the charging power of the battery is reduced, and further, the battery is charged with the reduced charging power. Therefore, the embodiment of the invention slows down the loss rate of the battery in the cycle charging process to a certain extent, and prolongs the cycle life of the battery.

Description

【Technical field】 [0001] The invention relates to the field of battery technology, in particular to a battery charging method, device and battery system. 【Background technique】 [0002] With the advancement of battery technology, more and more electric products use high-power charging technology to charge the battery. During the entire cycle life of the rechargeable battery, as the cycle time of the battery prolongs, the internal resistance of the battery will become larger and larger, so that the polarization of the battery will change during the later stage of high-rate charging. Big. If things go on like this, for the anode, when the polarization is large enough, the potential of the negative electrode of the battery will drop below 0V, and when the potential of the cathode of the battery drops below 0V, lithium ions will be partially embedded in the layered layer of the anode during the charging process of the battery. Between the structures, some of them will be preci...

Claims

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Application Information

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IPC IPC(8): H01M10/44H02J7/00
CPCH02J7/0091H01M10/44H02J7/007Y02E60/10
Inventor 范会平明帮生沈海杰陈宏浩汪颖
Owner NINGDE AMPEREX TECH
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