Extensible communication backup power lithium battery management system and method
A backup power supply and extended communication technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as short charging time and reduced battery life, achieve low standby power consumption, improve stability, and improve stability and reliability effects
Active Publication Date: 2017-02-01
蚌埠格识知识产权运营有限公司
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Problems solved by technology
For electric vehicles, the higher the charging current is, the shorter the charging time will be. The BMS used in electric vehicles generally does not limit the charging. This method will reduce the service life of the battery.
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[0021] Below, referring to the accompanying drawings, through the description of the embodiments, the specific implementation of the present invention, such as the control system involved, the mutual connection relationship, and the implementation method, are further described in detail, so as to help those skilled in the art understand the present invention Have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions.
[0022] The schematic diagram of the scheme is as follows figure 1 Shown: Modular design is adopted, RS485 communication is adopted between modules, and each module is connected in parallel. This structure ensures the stability of the output voltage of the battery pack to the greatest extent, and at the same time, the system realizes cascading to improve the redundancy of the system. System data can be output through RS485. The external interface of each module is designed with four DIP switches, which are used t...
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The invention relates to a lithium battery management system and method capable of expanding a communication standby power supply. The system comprises at least two sub-management modules. The sub-management modules are connected in parallel and then connected with a charger and a load respectively, and communication between the sub-management modules is conducted through series ports. Each sub-management module comprises a main control unit, a charger and discharger inverse connection unit, a main channel unit, an external control unit, a communication unit, a preceding stage control unit, a preceding stage signal sampling unit and a sub-management module power supply unit, wherein the charger and discharger inverse connection unit, the main channel unit, the external control unit, the communication unit, the preceding stage control unit, the preceding stage signal sampling unit and the sub-management module power supply unit are respectively connected with the main control unit, and the preceding stage control unit is also connected with the preceding stage signal sampling unit. The system and method meet the requirements of modern communication equipment for the standby power supply; the system has extremely low standby power consumption; the system can automatically switch battery packs, so that system stability is greatly improved.
Description
technical field [0001] The invention relates to the technical field of new energy, in particular to a battery management system, and more specifically to a lithium battery management system for an expandable communication backup power supply. Background technique [0002] The traditional backup power supply of communication equipment uses valve-regulated lead-acid batteries. This kind of power supply has the disadvantages of short service life and high maintenance costs. However, in the context of the 3G communication era, the deployment scale of base stations has increased and is more flexible. Traditional lead-acid batteries occupy an area of Large, difficult to maintain, difficult to meet demand. The service life of lithium batteries is more than three times that of lead-acid batteries. The volume and weight of iron-lithium batteries with the same capacity are 1 / 3 of lead-acid batteries, and they can be connected and placed arbitrarily. There are no special requirements f...
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IPC IPC(8): H02J7/00
Inventor 阚宏林肖亚平
Owner 蚌埠格识知识产权运营有限公司