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Household energy storage method and system with charging and discharging current reduction strategy

A home energy storage and charging current limiting technology, applied in the field of electronics, can solve problems such as overload work, hidden dangers, and impact on battery life, so as to enhance the safety factor, prolong battery life, and reduce the probability of full load or overload operation. Effect

Active Publication Date: 2020-08-07
BST POWER SHENZHEN
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  • Description
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Problems solved by technology

At this time, the remaining battery modules may work at full load or overload, which will affect the life of the battery and also pose certain safety hazards.
[0004] In summary, the battery module works under overload conditions, which will seriously affect the battery life and pose potential safety hazards

Method used

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  • Household energy storage method and system with charging and discharging current reduction strategy

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Embodiment Construction

[0037] Such as figure 1As shown, the present invention discloses a household energy storage method with a charging and discharging current reduction strategy, comprising the following steps:

[0038] Polling step: the inverter issues a polling command;

[0039] Verification step: whether the battery system verification data is complete, if yes, execute the charging judgment step, otherwise end.

[0040] Charging judging step: judging whether the battery system is charging, if so, then execute the charging current limiting step, otherwise execute the discharging current limiting step.

[0041] The charging current limiting step includes the following four parts:

[0042] (1) Current: When it is detected that the current value of a single battery module is greater than the first set current value of 25A, modify the charging current limit value of the battery module to the first specified value of 5A; for example: 3 battery modules in parallel, The current limit of each batter...

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Abstract

The invention provides a household energy storage method and system with a charging and discharging current reduction strategy. The household energy storage method comprises a charging judgment step,a charging current limiting step, a discharging current limiting step and a data processing step. The method has the beneficial effects that the charging and discharging strategy of the system is changed into the flexible charging and discharging control strategy through the current reduction strategy, so that the charging and discharging safety coefficient of the system is enhanced, the full-loador overload operation probability of the battery system is reduced, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a household energy storage method and system with a charge-discharge current reduction strategy. Background technique [0002] At present, the entire home energy storage system (inverter + battery system), there are modes with and without communication between the inverter and the battery. For those without communication, only the positive and negative electrodes need to be connected. When the detected situation is detected, the system output is turned on and off through the MOS tube; the communication method with communication is divided into RS485 or CAN communication, and the communication method is to connect the positive and negative poles and the communication line. Both systems follow the agreement. The communication protocol is used for data transmission, and the internal battery system also controls the MOS tube to turn on and off the system output according to the d...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH02J7/0068H02J7/0029H01M10/441H01M10/443Y02E60/10
Inventor 黄文海郭春锋陈建华
Owner BST POWER SHENZHEN
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