Modular battery balancing and charging system
A modular battery and charging system technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of incapable battery pack energy, little battery charging system, and little consideration of battery terminals, etc., to improve efficiency, Realize the effect of fault diagnosis and size reduction
Active Publication Date: 2016-08-17
淄博明泰电器科技有限公司
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Problems solved by technology
However, battery charging systems are often only considered from the perspective of power electronics of the charging system, and seldom consider factors at the battery side, and few battery charging systems have the function of battery balancing
Therefore, during the battery charging process, as long as one battery cell in the battery pack reaches the charging termination state, the charging of the entire battery pack must be terminated, so the battery pack cannot obtain the required energy.
Method used
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Embodiment Construction
[0029] Embodiments of the present invention are further described below in conjunction with the accompanying drawings:
[0030] Such as figure 1 As shown, a modular battery equalization and charging system of the present invention includes an AC / DC converter 1, a DC bus 3 and a communication bus 4, the input end of the AC / DC converter is connected to the mains, and the AC / DC converter 1 The output terminal is connected to the DC bus 3, and also includes N battery charging and balancing modules and a battery pack 6, where N is a positive integer greater than 1, and the battery charging and balancing modules 5 are respectively module 1, module 2, ..., module N, The battery pack includes N battery cells connected in series, respectively B 1 , B 2 ,...,B N , each battery charging and balancing module 5 is provided with a controller 16, a power port 8, a DC bus port 9, a communication port 10, a battery port 11, a voltage detection circuit and a DC / DC converter, and the battery ...
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The invention belongs to the technical field of battery equalization and battery charging, and specifically relates to a modular battery equalization and charging system, including an AC / DC converter whose output terminal is connected to a DC bus, and the DC bus is respectively connected in parallel with N battery charging and equalization modules , N is a positive integer, and the N battery charging and balancing modules are respectively module 1-module N, whose communication port is connected to the communication bus, the power port is connected to the 12V isolated auxiliary power supply, and the battery port is connected in parallel with the corresponding battery cells in the battery pack . The driving power port of module 1 is connected to the isolated driving power, and the driving power port of module 2-module N is respectively connected to the negative pole of the corresponding battery cell and the positive pole of the previous battery. The invention integrates charging, equalization, PFC and battery management in one system, effectively reduces the size of the system, increases the system efficiency and greatly reduces the cost of the system, adopts a modular design method, and has the advantages of easy maintenance, replacement and capacity expansion.
Description
technical field [0001] The invention belongs to the technical field of battery equalization and battery charging, and in particular relates to a modularized battery equalization and charging system. Background technique [0002] With the advancement and development of technology, new energy technologies such as electric vehicles have developed rapidly, and batteries have been widely used as important energy storage units. Due to the low-voltage characteristics of battery cells, battery packs used in driving equipment such as electric vehicles often require a large number of battery cells to be connected in series to meet the driving voltage and power requirements. However, due to the influence of battery manufacturing, initial capacity, ambient temperature, etc., there are differences between batteries, so that the battery packs connected in series will cause some battery cells to overcharge and overdischarge in practical applications, which greatly It will seriously affect...
Claims
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IPC IPC(8): H02J7/00H02J7/02
Inventor 米春亭李思奇白宗玉王磊杨晓伶
Owner 淄博明泰电器科技有限公司