Modular battery equalizing and charging system
A modular battery and charging system technology, applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of insufficient battery pack energy, few battery charging systems, and little consideration of battery terminals, etc., to improve efficiency, Achieve fault diagnosis, size reduction effect
Active Publication Date: 2014-02-26
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 equalizing and battery charging, and in particular relates to a modular battery equalizing and charging system which comprises an alternating current / direct current (AC / DC) converter, wherein the output end of the AC / DC converter is connected with a DC bus; the DC bus is connected in parallel with N battery charging and equalizing modules respectively, wherein N is a positive integer; the N battery charging and equalizing module are modules 1 to N respectively; communication ports of the modules 1 to N are connected with a communication bus, power ports of the modules 1 to N are connected with a 12V auxiliary isolated power supply, and battery ports of the modules 1 to N are connected in parallel with corresponding battery monomers in a battery pack; a driving power port of the module 1 is connected with an isolated driving power supply; driving power ports of the modules 2 to N are connected with the negative electrodes of the corresponding battery monomers and the positive electrodes of the previous batteries. According to the modular battery equalizing and charging system, charging, equalizing, PFC (power factor correction) and battery management are integrated in one system, so that the size of the system is effectively reduced, the system efficiency is improved, and the system cost is greatly lowered; due to the adoption of a module design method, the system has the advantages of convenience in maintenance, replacement and expansion and the like.
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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Login to View More 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