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Battery management system and battery management method

A battery management system and battery technology, applied in the direction of battery charging management, battery circuit devices, charge equalization circuits, etc., can solve the problems of battery management system design and implementation complexity, achieve communication wiring harness saving, design and implementation convenience, reduce The effect of length

Active Publication Date: 2018-06-29
HANGZHOU SILAN MICROELECTRONICS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the complex problems of traditional battery management system design and implementation

Method used

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  • Battery management system and battery management method
  • Battery management system and battery management method
  • Battery management system and battery management method

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Embodiment Construction

[0055] In view of the problems existing in the prior art, the applicant has conducted a lot of research from the perspectives of the reliability, modularization, and equalization technology of the battery management system (BMS).

[0056] In terms of BMS hardware architecture, the current mainstream hardware architecture solution of BMS is a two-layer structure, such as figure 1 As shown, the BMS includes a module battery management unit and a group battery management unit, wherein the group battery management unit is the first layer structure, the module battery management unit is the second layer structure, and the series battery pack is the managed object. Usually, a modular battery management unit is used to manage a series battery pack, and a series battery pack includes 12-24 or more single batteries connected in series. The module battery management unit is connected to the battery pack in series through the sampling harness, and the battery pack in series is connected ...

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Abstract

The invention provides a battery management system and a battery management method. The battery management system comprises a battery pack controller, N single battery controllers, N isolation transformers and a pair of multiplex buses; the battery pack controller is connected to the multiplex buses and used for managing a battery pack, each single battery controller is connected to the multiplex buses through one isolation transformer, the battery pack comprises N single batteries which are connected in series, each single battery controller manages one single battery, time division multiplexing is performed on the multiplex buses, therefore, the battery pack controller and the single battery controllers can achieve power transmission and signal transmission through the multiplex buses, the system design and implementation difficulty is lowered, and the system is beneficial for lowering the cost. Furthermore, each single battery controller and the corresponding single battery are arranged to be adjacent to each other in the space, therefore, the single battery controllers and the single batteries can be combined together at the structure level, historical data of the batteries is stored, and secondary use of the batteries is convenient.

Description

technical field [0001] The invention relates to the battery field, in particular to a battery management system and a battery management method. Background technique [0002] Lithium-ion power batteries have been widely used in all aspects of life and production. Whether it is common electric vehicles, electric tools, electric bicycles in daily life, or emerging technologies such as new energy power generation and smart grids, lithium-ion power batteries are an important part of them, providing energy for the system or storing excess energy. In the field of high-power applications, compared with other types of energy storage batteries, lithium-ion batteries have some significant advantages, such as high energy density, high power density, long cycle life, and environmental protection. Compared with the nickel-hydrogen battery that can also be used as a power battery, its single cell voltage is higher (about 3 times that of the nickel-hydrogen battery), the power density is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0013H02J7/0014H02J7/0021H02J7/0022H02J2207/10
Inventor 夏原野张若琦吴建德胡斯登
Owner HANGZHOU SILAN MICROELECTRONICS
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