Monitoring system and method in cylindrical battery combination
A monitoring system, cylindrical battery technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as difficulty in implementation, and achieve the effect of simple logical identification and judgment
Active Publication Date: 2015-02-25
上海三玖电气设备有限公司
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[0004] And because many batteries are in parallel mode, the voltage between them is equal. In addition to monitoring the temperature, only the current can be monitored. Since there are too many winding batteries, it is necessary to monitor each of them. current, it is difficult to achieve
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[0024] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
[0025] Embodiments of the present invention relate to a monitoring system in a cylindrical battery pack, such as figure 1 As shown, there are N wound battery cells 1 connected in parallel, where N>1. The winding battery cells 1 that are superimposed and combined in parallel have a basic capacity of 25Ah / 3.2V (or other voltage levels or other capacity levels). In this embodiment, 25Ah / 3.2V winding The battery cell 1 constitute...
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The invention relates to a monitoring system and method in a cylindrical battery combination. The monitoring system comprises mutually parallel N winding-type battery individuals, wherein N is larger than 1, and each winding-type battery individual is provided with a winding coil; one end of a leading-out end of the winding coil is connected with an input end of a monitoring circuit while the other end of the leading-out end of the winding coil is grounded; and the monitoring circuit obtains a comparison reference voltage according to collected current of each winding-type battery individual and finishes the monitoring by comparing the comparison reference voltage with parameters of each winding-type battery individual. The monitoring method comprises the following steps of: collecting current of each winding-type battery individual and calculating an average value; obtaining a comparison reference voltage according to the average value; and comparing a parameter of each winding-type battery individual with the comparison reference voltage to finish the monitoring. According to the monitoring system and method in the cylindrical battery combination, disclosed by the invention, change of the parameter of each battery individual can be obtained, and accidents caused by short circuit of a battery can be avoided.
Description
technical field [0001] The invention relates to a battery monitoring system, in particular to a monitoring system and method in a cylindrical battery combination. Background technique [0002] In the application of energy-type or power-type power batteries, considering that the production process of winding battery cells is mature and the industrial automation technology is relatively high, and the consistency has been further improved and the cost has been reduced after mass production, therefore, the current use It has become a trend to obtain a larger-capacity combined battery module through parallel connection of winding small-capacity batteries, and it has been applied by many projects, products and enterprises. [0003] When the capacity of the wound-type small-capacity single battery is 25Ah, you only need to connect 4 phases in parallel to form a 100Ah module, and only need to connect 24 phases in parallel to form a 600Ah module, and so on, through any combination, ...
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IPC IPC(8): G01R31/36
Inventor 陆政德帅鸿元
Owner 上海三玖电气设备有限公司