Double-battery parallel connection control method realized by software

A control method and a technology implemented by software, applied in the field of electric vehicles, can solve the problems of increasing hardware costs, occupying installation space, and battery heating, and achieving the effect of saving installation space and hardware costs.

Inactive Publication Date: 2018-08-28
常州思叠戈电动车科技有限公司
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Problems solved by technology

[0003] In the dual-battery parallel power supply system, due to the differences in the individual characteristics of the two batteries, some problems may occur: for example, if the voltage difference between the two batteries is large, if they are directly connected in parallel, the high-voltage battery will charge the low-voltage battery with a large current, and the battery Fever, can explode in severe cases
Additional hardware costs are required, and due to the volume and heat dissipation requirements of electronic switches, a certain amount of installation space is required

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  • Double-battery parallel connection control method realized by software

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[0033] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] see figure 1 :

[0035] According to the present invention, a dual-battery parallel control method realized by software, the dual-battery includes battery A1 and battery 2, and the software is embedded in an electronic control device, and the software includes:

[0036] Function 1 realization steps: By connecting battery A to the electronic control device, battery two to the communication line of the electronic control device, read the internal information of BMS1 and BMS2 in real time, so as to realize the comprehensive and timely acquisition of battery information;

[0037] Function 2 implementation steps: When it is detected that the voltage of the double battery exceeds the set threshold, disconnect the battery with higher voltage and enter the single battery power supply state; when any of the double batteries has short-ci...

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Abstract

The invention relates to a double-battery parallel connection control method realized by software. The double-battery parallel connection control method comprises the steps of a first function realizing step, through a communicating line for connecting a first battery A with an electronic control device and a communication line for connecting a second battery with the electronic control device, reading inner information of BMS1 and BMS2 in real time, thereby realizing comprehensive and in-time acquisition of battery information; a second function realizing step, when a fact that voltage of thedouble batteries exceeds a preset threshold is detected, switching off the battery with relatively high voltage, and entering a single-battery power supplying state; when an abnormal state of shortcircuit protection, over-temperature protection and overvoltage protection occurs in a random one in the double batteries, switching off the battery with abnormity, thereby realizing protection in the abnormal state of the battery; and a third function realizing step, recovering the battery from the abnormal state. The double-battery parallel connection control method has advantages of saving hardware cost and mounting space, realizing real-time monitoring management of the battery state, and correcting existing problems or adding new functions through software upgrading.

Description

technical field [0001] The invention belongs to an electric vehicle, in particular to a dual-battery parallel control method realized by software. Background technique [0002] In electric vehicle applications, in many cases, in order to increase the cruising range, it is necessary to use two battery packs in parallel, which can be called a dual-battery parallel power supply system. [0003] In the dual-battery parallel power supply system, due to the differences in the individual characteristics of the two batteries, some problems may occur: for example, if the voltage difference between the two batteries is large, if they are directly connected in parallel, the high-voltage battery will charge the low-voltage battery with a large current, and the battery Fever, may explode in severe cases. [0004] In order to solve a series of problems in the dual-battery parallel power supply system, the traditional method is to add a hardware control board, which is equivalent to addin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0022H02J7/0026
Inventor 何艺舟
Owner 常州思叠戈电动车科技有限公司
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