Super capacitor voltage control method and system, energy storage tram and control system
A technology of a voltage control system and a voltage control method is applied to an energy storage tram control system and a tram. , the field of supercapacitor voltage control method and system for energy storage electric vehicles, which can solve problems such as the performance of supercapacitor modules and the impact of energy utilization
Active Publication Date: 2020-12-11
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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Problems solved by technology
[0012] The problem to be solved by the present invention is to provide an energy storage system for the problem that the performance and energy utilization of the supercapacitor module are affected by the different capacities of the supercapacitors connected in series after the vehicle is restarted in the prior art. Electric vehicle supercapacitor voltage control method and system, energy storage electric vehicle supercapacitor voltage control system, energy storage electric vehicle
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[0115] like image 3 As shown, in one embodiment, the electric energy conversion circuit is realized by using the flying capacitor 81 . For example, if UA(j)>U0 and UA(k)<U0, when the flying capacitor 81 is first connected to both ends of the supercapacitor C(j), and then switched to connect to both ends of the supercapacitor C(k), thereby realizing The supercapacitor C(j) charges the supercapacitor C(k). When UA(j)=U0 or UA(k)=U0, the charging process is stopped.
[0116] like Figure 4 As shown, in one implementation manner, the first inductor 82 is used to realize the electric energy conversion circuit. One end of the first inductance 82, one end of the supercapacitor C(j), and one end of the supercapacitor C(k) are connected at one point; the other end of the first inductance 82 is connected to one end of the second control switch 12 and one end of the third control switch 13 at one point ; The other end of the second control switch 12 is connected to the other end of ...
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The invention provides a method for controlling the voltage of a supercapacitor of an energy storage electric vehicle. The method comprises the steps of detecting the voltage values of various supercapacitors in a supercapacitor module in a vehicle stop state; setting a first voltage value U0 according to the voltage values of respective supercapacitor; separately comparing the voltage values of the respective supercapacitors with the first voltage value U0; if UA<U0, charging the ith supercapacitor until UA=U0; if UA>U0, discharging the ith supercapacitor until UA=U0; if UA=U0, performing notreatment until the voltage values of respective supercapacitors are all equal to the first voltage value. The invention also provides an energy storage electric vehicle supercapacitor voltage controlsystem, an energy storage electric vehicle control system and an energy storage electric vehicle.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, and more specifically, to an energy storage electric vehicle supercapacitor voltage control method and system, and an energy storage electric vehicle control system. In addition, the present invention also relates to an electric vehicle comprising the above energy storage electric vehicle control system. Background technique [0002] At present, most of the cars on the road use gasoline or diesel fuel extracted from crude oil. Compared with internal combustion vehicles powered by fossil energy, electric vehicles have significant advantages in environmental protection and energy saving. Electric vehicles include pure electric vehicles, hybrids Power vehicles and fuel cell vehicles. [0003] Vehicles using supercapacitors as energy storage components for energy storage power supply solve the problems of service life and high-current charging and discharging. However, since supercapacitor...
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IPC IPC(8): B60L50/40H02J7/34
CPCH02J7/345Y02T10/70
Inventor 彭钧敏陈珍宝林平熊玉玲莫文芳胡楚联
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD