A battery balancing method, a battery balancing controller and a battery pack
A technology of battery equalization and controller, which is applied in the direction of charge equalization circuit, secondary battery charging/discharging, battery circuit device, etc., and can solve the problem of long time consumption
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Embodiment 1
[0056]An embodiment of the present invention provides a battery balancing method. For a battery pack composed of multiple single cells connected in series or in parallel, due to differences in charge and discharge rates and battery capacities between individual cells, this will cause overcharge or overdischarge of some single cells, affecting the entire battery. The life of the battery pack, therefore, needs to be balanced for the above battery pack. In the embodiment of the present invention, the battery is balanced during the operation of the battery without additional battery equalization time, and the equalization can be performed not only in the charging phase, but also in the discharging phase.
[0057] The execution body of the battery balancing method provided by the embodiment of the present invention is a battery balancing controller. Programmable read-only memory) stores parameters such as the equalization time coefficient and cumulative running time of each single...
Embodiment 2
[0097] An embodiment of the present invention provides a battery balancing controller. Wherein, the battery balancing controller can be an MCU, and the battery balancing controller can read the parameters such as the balancing time coefficient and the cumulative running time of each single battery in the battery pack stored in the EEPROM, and control each single battery according to the above parameters. When the corresponding equalization circuit is turned on or off, each single battery in the battery pack is equalized. The battery balancing controller is used to execute the battery balancing method provided in Embodiment 1 above.
[0098] Such as figure 2 As shown, the battery balance controller provided by the embodiment of the present invention includes: an acquisition module 210 , a judgment module 220 , a first balance module 230 and a second balance module 240 .
[0099] An acquisition module 210, configured to acquire the equalization time coefficient of the single ...
Embodiment 3
[0121] An embodiment of the invention provides a battery pack. Such as image 3 As shown, the battery pack includes: a plurality of single cells 310, a plurality of balancing circuits 320, an EEPROM 330, and the battery balancing controller 340 provided in Embodiment 2 above;
[0122] The balancing circuit 320 corresponds to the single battery 310 one by one;
[0123] The balancing circuit 320 is respectively connected to its corresponding single battery 310, and the battery balancing controller 340 is connected to the aforementioned EEPROM 330 and multiple balancing circuits;
[0124] The EEPROM 330 is used to store the cumulative running time and equalization time coefficient of each single battery 310;
[0125] The battery balancing controller 340 is used to control the balancing circuit 320 to balance the corresponding single batteries 310 .
[0126] Wherein, the above-mentioned battery pack includes a plurality of single cells 310, and the plurality of single cells 310...
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