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Active equalization control device and method

A technology of equalization control and active equalization, which is applied in the direction of circuit devices, charge equalization circuits, battery circuit devices, etc., and can solve problems such as not widely used in practice and complex design

Inactive Publication Date: 2017-05-31
山东谦恒电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although active equalization has significant advantages over passive equalization, its design is too complicated, resulting in not widespread practical application

Method used

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  • Active equalization control device and method
  • Active equalization control device and method

Examples

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no. 1 example

[0036] Please refer to figure 2 , the embodiment of the present invention provides an active equalization control device 100 , which includes a general control module 110 , a sampling module 120 , an electromagnetic wave sending module 130 , an electromagnetic wave receiving module 140 and an equalization control module 150 . The overall control module 110 is electrically connected to the sampling module 120 , the electromagnetic wave sending module 130 and the equalization control module 150 respectively. The balance control module 150 is electrically connected to the electromagnetic wave receiving module 140 . The general control module 110 is used to control the electromagnetic wave sending module 130 to send electromagnetic waves. The general control module 110 may include a processor, a memory, and a storage controller. The components of the memory, storage controller, and processor are electrically connected directly or indirectly to realize data transmission or inter...

no. 2 example

[0055] Please refer to Figure 5 , the embodiment of the present invention provides an active balance control method, which is applied to the above-mentioned active balance control device 100, and the method includes:

[0056] Step S400: the general control module acquires the current and cell voltage of each battery in the battery pack collected by the sampling module;

[0057] Step S410: judging whether the battery satisfies a preset battery balancing condition;

[0058] Specifically, the preset battery balancing conditions include at least one of the following conditions: the current value of the battery collected by the sampling module 120 is not within the current preset threshold; the voltage difference between the batteries collected by the sampling module 120 is not within The voltage difference is within a preset threshold. Wherein, the current preset threshold and the voltage difference preset threshold can be set according to actual conditions.

[0059] Step S420...

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Abstract

The embodiment of the invention provides an active equalization control device and an active equalization control method, and relates to the technical field of battery management. The device comprises a main control module, a sampling module, an electromagnetic wave transmitting module, an electromagnetic wave receiving module and an equalization control module, wherein the main control module is electrically connected with the sampling module, the electromagnetic wave transmitting module and the equalization control module respectively; the equalization control module is electrically connected with the electromagnetic wave receiving module; the equalization control module comprises a second input end; the second input end is electrically connected with a battery pack; and the battery pack comprises M batteries, the equalization control module comprises N equalization control circuits, the N equalization control circuits are electrically connected with the main control module, the N equalization control circuits are used for controlling the equalization of the M batteries, the energy is transferred by adopting electromagnetic waves to realize the active equalization of the batteries, the circuit connection is simplified, and the cost is low.

Description

technical field [0001] The present invention relates to the technical field of battery management, in particular to an active equalization control device and method. Background technique [0002] At present, lithium battery management systems, in addition to battery voltage monitoring and charge and discharge management functions, partly also have equalization functions. Because the voltage of a single lithium battery is very low, only about 3V. The power voltage required by electric vehicles has reached several hundred volts. In order to meet the requirements, the battery packs of almost all electric vehicles are connected in series by individual lithium batteries to provide energy. The principle of the battery shows that the performance of the whole string of batteries can be optimized only when the charge and discharge of each single battery are exactly the same. Because the current battery production technology is difficult to make the mass-produced single batteries h...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0014
Inventor 王文靖
Owner 山东谦恒电子科技有限公司
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