Battery management device, battery management method and battery management system
A battery management and single battery technology, applied in battery circuit devices, circuit devices, emergency protection circuit devices, etc., can solve the problems of aggravating the overheating of the chip and the internal temperature of the chip, etc., achieving simple circuit implementation, low cost, and solving overheating problems. effect of protection
Inactive Publication Date: 2013-09-18
张兴发
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[0003] In addition, if the output of the integrated voltage regulator or voltage regulator is always connected to a large load, the internal temperature of the chip will continue to rise.
And when the thermal conductivity of the entire application system is poor, the overheating problem of the chip will be exacerbated
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[0021] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0022] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, so the present invention is not limited by the specific embodiments disclosed below.
[0023] An embodiment of the present invention provides a battery management device for managing several single batteries. The battery management device includes a microcontroller, a first voltage regulator and a thermal protection circuit. The microcontroller receives and processes the battery voltage of several cells. The first voltage regulator is connected with the power supply and the microcontroller, and is used for providi...
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The invention provides a battery management device, a battery management method and a battery management system. The battery management device comprises a microcontroller, a first voltage regulator and a thermal protection circuit. The microcontroller is used for receiving and processing battery voltages of a plurality of single batteries. The first voltage regulator is connected with a power supply and the microcontroller, and is used for supplying a first work voltage to the microcontroller. The thermal protection circuit is connected with the power supply and the first voltage regulator, and is used for monitoring the temperature inside the battery management device and controlling the first voltage regulator to output or not output the first work voltage according to the temperature inside the battery management device. According to the battery management device, the battery management method and the battery management system, the overtemperature protection problem of the battery management device is solved, the circuit is easy to realize, and the cost is low.
Description
technical field [0001] The present invention relates to the field of battery management, in particular to a battery management device, method and system. Background technique [0002] The multi-string lithium battery protection chip usually integrates a voltage equalization circuit in order to keep the voltage of each battery consistent. When the difference between the maximum battery voltage and the minimum battery voltage is greater than a set threshold, the equalization circuit starts to work and discharges one or more batteries so that the battery voltage of each battery reaches balance. However, the operation of the equalization circuit causes the temperature inside the chip to rise. Usually, the normal operating temperature range of the chip is -40 degrees to 105 degrees, and the performance of the chip will decrease after exceeding 120 degrees, and when the internal temperature of the chip exceeds 150 degrees, the chip will be damaged. [0003] In addition, if the o...
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IPC IPC(8): H02J7/00H02H7/18H02H5/04
Inventor 张兴发
Owner 张兴发