Battery equalization system
A battery equalization and equalization technology, which is applied in the direction of charge equalization circuit, battery overcharge protection, battery circuit device, etc., can solve the problems of cell difference, no charging protection function, overcharge of the battery to be balanced, etc., and achieve automatic and safe balance Effect
Pending Publication Date: 2021-11-09
杭州微慕科技有限公司
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Problems solved by technology
At the same time, the battery itself has power consumption, which will also lead to differences in the battery.
[0003] The existing battery equalization system does not have a charging protection function, which will lead to overcharging of the battery to be balanced
Method used
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[0030] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.
[0031] The present invention proposes a battery balancing system, such as figure 1 As shown, it includes a switch circuit 10, a current processing circuit 20, a charging protection circuit 30, a sampling circuit 40, a control circuit 50, and a drive circuit 60; wherein, the input end of the switch circuit 10 is connected to the output end of the power supply 70, and the output end of the switch circuit 10 connected to the input end of the current processing circuit 20, the output end of the current processing circuit 20 is connected to the battery 80 to be balanced; the charging protection circuit 30 is connected to the battery 80 to be balanced, and is used to protect the battery to be balanced during the balancing process; The input end of the sampling circuit 40 is connected to...
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The invention provides a battery equalization system, which comprises a switching circuit, a current processing circuit, a charging protection circuit, a sampling circuit, a control circuit and a driving circuit. The input end of the switching circuit is connected with a power output end, the output end of the switching circuit is connected with the input end of the current processing circuit, and the output end of the current processing circuit is connected with a to-be-equalized battery. The charging protection circuit is connected with the to-be-equalized battery and is used for protecting the to-be-equalized battery in the equalization process. The input end of the sampling circuit is connected with the to-be-equalized battery, the output end is connected with the control circuit, and the sampling circuit is used for acquiring a battery signal of the to-be-equalized battery and transmitting the battery signal to the control circuit. The output end of the control circuit is connected with the driving circuit for sending a control signal of the switching circuit to the driving circuit according to the battery signal. The output end of the driving circuit is connected with the control end of the switching circuit, and the driving circuit is used for controlling the switching circuit according to the control signal so as to control whether the to-be-equalized battery is equalized. Whether the to-be-equalized battery is equalized or not can be controlled, and automatic and safe equalization is realized.
Description
technical field [0001] The invention relates to the field of battery balancing, in particular to a battery balancing system. Background technique [0002] After the lithium battery has been charged and discharged many times, the capacity of the cells will be different. This difference is related to the concentration difference of the lithium battery negative electrode material, the variation of the lattice shape of the battery negative electrode material, the thickness of the diaphragm, the difference in uniform coating, and the fine pores of the diaphragm. Congestion and many other factors are related. When the batteries in series are charged and discharged at the same time, due to the inconsistent internal resistance of the batteries, the internal resistance has thermal power loss, and the thermal power loss is also different, which leads to inconsistent remaining energy of the single batteries. At the same time, the battery itself has power consumption, which will also l...
Claims
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IPC IPC(8): H02J7/00H02J7/02
CPCH02J7/0014H02J7/0019H02J7/0047H02J7/0029H02J7/00302H02J7/02
Inventor 耿培源何俐鹏王敏徐英君顾大朋
Owner 杭州微慕科技有限公司