40results about How to "Realize charge and discharge control" patented technology

The invention relates to a battery group discharging control method and a battery group charging control method, and belongs to the technical field of new energy automotive power battery application. Aiming at circular current of a parallel-connected battery group, battery packs are connected in parallel after respectively passing through corresponding relays, on / off of each relay is controlled according to voltage sampling on and the specific state of the corresponding battery pack so as to realize charging and discharging control on the battery packs, battery information is transmitted to a finished automobile through a finished automobile CAN, and the finished automobile makes appropriate power request and restrictions according to information sent by a battery management system so as to eliminate or suppress circular current of the battery packs connected in parallel, ensure the maximum output capacity of the batteries and ensure the safety of the batteries and personnel.

The invention relates to a flexible multi-level bridgeless power factor correction converter and a modulation method. The converter includes an AC inductance part, a power electronic switch network and a DC capacitor part; a diode D 1 The anode is connected to the switching tube S 1 Drain, switch tube S 1 The source is connected to the switching tube S 2 Drain; Diode D 2 The anode is connected to the switching tube S 3 Drain, switch tube S 3 The source is connected to the switching tube S 4 Drain; switch tube S 5 The source is connected to the switching tube S 3 Source; switch tube S 6 The source is connected to the switching tube S 1 source; diode D 1 Cathode and Diode D 2 The cathode is connected; the switch tube S 2 source and switch S 4 The source is connected; the switch tube S 5 drain and switch S 6 connected to the drain. It can reduce inductance loss and volume, reduce on-state loss at low input voltage, have smaller DC capacitance, and have higher power density; it can flexibly realize five-level and seven-level operation without changing the circuit structure state switch.

A battery pack charging and discharging management system and a method thereof relate to charging and discharging control technology of storage batteries and belong to the technical field of control for storage batteries, for solving the problem that the adoption of the equalization technology in the existing charge and discharge management system still cannot effectively solve the problem of inconsistency caused by the deterioration of the battery. The management method adopts a multi-stage, intermittent charging or discharging method. In the charging / discharging process, a progressive charging method is adopted, different charging / discharging conditions are set in each stage, and the conditions are switched to the next stage until the condition is reached until the conditions of the laststage are satisfied. The switching time between adjacent stages is less than 10ms, and the charging / discharging duration of each stage is between 20 and 100s. The management system includes a switching control device for switching the unit cells and a bidirectional direct current converter for adjusting the charging / discharging circuit voltage. The invention overcomes bias in the prior art, ensures that each unit cell in the battery pack is fully charged or vented, and is capable of saving energy.

The invention relates to the technical field of portable power supplies, and particularly discloses a charge and discharge control system of a power source device. The charge and discharge control system is provided with a battery pack and a level translational transformation module which is connected with the battery pack. The charge and discharge control system is also provided with an input and output connection module, a performing signal transmitting module and a master control module. The beneficial effects of application of the charge and discharge control system of the power source device are that the analog acquisition input port multiplexing technology is adopted in the master control module, the whole system is enabled to detect more analog quantity through switch sequences and the voltage of each single battery can be detected in real time so that power consumption from the intermediate battery of the series connected single batteries can be transformed to power consumption from total positive power and electric leakage balance of all the single batteries can be realized; and the input and output connection module can at least output two paths of standard discharge voltage of different voltage values so as to meet the requirements of the user for using one power source device to supply power to mobile electrical equipment of different voltage demands.

The invention discloses a distributed microgrid system energy scheduling and communication method, equipment and storage medium. Each single user accesses the microgrid system through an energy router and the energy router has a unique identification address; each single user according to the user's internal sensor Optimize the state of load, new energy generation and energy storage in the microgrid system and extract supply and demand requirements; the energy router performs signal flow interaction on the power line through the power line carrier communication PLC; adopts multi-agent control mode, each energy router is established according to The rules of supply and demand are sorted, matched, and energy dispatched; the power line carrier communication PLC converts the frequency to the frequency segments corresponding to different IPs according to the dispatching plan to realize signal flow communication. The invention realizes multi-host parallel communication and frequency hopping communication of the energy router based on the DC bus, can monitor the flow direction and magnitude of electric energy in real time, realizes the dynamic adjustment of the operating state of the module, and can also realize the metering and billing of the electric energy.

The invention relates to scheduling and operation of power systems, in particular to an energy storage frequency modulation system and method. The energy storage frequency modulation system comprisesa storage battery 1, a super-capacitor 3, a first DC / AC circuit 2, a second DC / AC circuit 4, a medium-frequency transformer 5, a third DC / AC circuit 6, a DC capacitor 7 and a PCS circuit. Compared with the prior art, the energy storage frequency modulation system has the beneficial effects that the storage battery and the super-capacitor are adopted as energy storage mediums, so that the characteristics that the storage battery is high in energy density, low in cost and diverse can be developed, and the advantages that the super-capacitor is high in charge and discharge power and good in dynamic response can also be developed, thereby achieving mixed utilization of two energy storage mediums and improving the characteristics of the energy storage system.