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Active equalization charging protection device and method, and charging device

A charging protection and active equalization technology, which is applied in circuit devices, charge equalization circuits, battery circuit devices, etc., can solve problems such as overvoltage, achieve the effect of solving the problem of overvoltage charging and ensuring the safety of balanced charging

Pending Publication Date: 2019-02-15
ZHUHAI YINLONG ELECTRICAL APPLIANCES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the embodiments of the present invention is to provide an active equalization charging protection device, method and charging device, so as to improve the situation that the existing battery pack is prone to overvoltage in the active equalization charging process

Method used

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  • Active equalization charging protection device and method, and charging device
  • Active equalization charging protection device and method, and charging device
  • Active equalization charging protection device and method, and charging device

Examples

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no. 1 example

[0030] see figure 1 , this embodiment provides an active balanced charging protection device 100, the active balanced charging protection device 100 is used to prevent the battery pack 200 from over-voltage charging. It is understood that the battery pack 200 includes a plurality of battery cells. The active equalization charging protection device 100 includes: a sampling circuit 110 , a comparison circuit 120 , a controller 130 and a charging control circuit 140 .

[0031] The sampling circuit 110 is electrically connected to the battery pack 200 and is also electrically connected to the comparator U1 for sampling the charging voltage of the battery pack 200 and sending the sampled charging voltage of the battery pack 200 to the comparator U1.

[0032]In this embodiment, the sampling circuit 110 includes a fourth resistor R4 and a fifth resistor R5, the battery pack 200 includes an output port, and the output port of the battery pack 200 passes through the fourth resistor R4,...

no. 2 example

[0044] This embodiment provides a charging device, and the charging device includes the active equalization charging protection device 100 provided in the first embodiment.

no. 3 example

[0046] This embodiment provides an active equalization charging protection method, please refer to Figure 4 , Figure 4 A preferred embodiment of the present invention provides an active equalization charging protection method. It should be noted that, the basic principle and the resulting technical effects of the active balanced charging protection method provided in this embodiment are the same as the active balanced charging protection device 100 provided in the above-mentioned first embodiment. Where mentioned, reference may be made to the corresponding contents in the above-mentioned embodiments.

[0047] The active equalization charging protection method is applied to the active equalization charging protection device 100 . The active equalization charging protection device 100 includes a sampling circuit 110 , a comparison circuit 120 , a controller 130 and a charging control circuit 140 , and the method includes: S10 - S40 .

[0048] S10: The sampling circuit 110 s...

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Abstract

The invention provides an active equalization charging protection device and method, and a charging device. The active equalization charging protection device comprises a sampling circuit, a comparison circuit, a controller and a charging control circuit. A charging voltage is sampled; a comparison circuit is used for comparing the sampled charging voltage with a preset voltage; when the sampled charging voltage is higher than the preset voltage, a controller outputs a response control signal to a charging control circuit for stopping equalization of the battery pack, so that overvoltage charging is prevented; and when the sampled charging voltage is lower than the preset voltage, the battery pack is kept charged. Through the protection device and method, the problem of overvoltage charging of the battery pack can be effectively solved to ensure that the charging voltage does not exceed a set value, so that the equalization charging safety of the battery pack is ensured.

Description

technical field [0001] The present invention relates to the technical field of charging, and in particular, to an active equalization charging protection device, method and charging device. Background technique [0002] With the development of lithium battery packs, many electric vehicles have more and more requirements on the charging rate. During the process of use, the battery pack will gradually decay due to various reasons (mainly temperature). This is the characteristic of the battery pack. This part of the attenuation cannot be recovered by equalization. The main reason for the decrease in system capacity is the system loss caused by the unbalanced capacity of the battery pack. The traditional passive balancing is difficult to compensate for the consistency of the battery pack, and the active balancing method is more and more applied, but how to protect the cells during the application process puts forward higher requirements, which need to be controlled by hardware ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H02J7/0014H02J7/0077Y02E60/10
Inventor 马有镇姚高亮
Owner ZHUHAI YINLONG ELECTRICAL APPLIANCES
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