摘要:
The management of an electrical energy storage battery requires the provision of a non-dissipative balancing device for balancing the electric voltages at the terminals of the storage elements of the battery, comprising N+1 switching elements of a first type (Cpk) capable of electrically connecting, in parallel, two storage elements belonging respectively to first and second branches to a same stage and 2N switching elements of a second type (Cdk,1, Cdk,2) capable of electrically connecting, in parallel, two storage elements belonging respectively to the first and second branches to adjacent stages. It involves making a selection that consists of choosing only a portion of the storage elements of the first branch corresponding to a lower number of stages than the total number of stages of the battery and only a portion of the storage elements of the second branch corresponding to a lower number of stages than the total number of stages of the battery. The switching elements are controlled by electrically connecting the storage elements selected from the first branch and the storage elements selected from the second branch to each other, in parallel.
摘要:
To perform charge/discharge management of a plurality of secondary batteries efficiently in a short time. A power supply apparatus (10) has a plurality of secondary batteries (11, 12) connected in series, outputs a composite voltage of all of the secondary batteries, and outputs an output of a part of the secondary batteries as a partial voltage. The power supply apparatus includes a detecting unit (state detecting unit 17) that detects states of the secondary batteries and a changing unit (switches 13 to 16) that changes an order of series connection of the plurality of secondary batteries based on a detection result of the detecting unit in such a manner that the partial voltage is outputted from a secondary battery that is in a relatively good state.
摘要:
The invention relates to a switched supply device for supplying electricity to the on-board network a motor vehicle. The device is characterized in that it includes a programmable controller which enables the performances to be adapted to the needs of the motor vehicle. The device uses three power storage devices in order to provide adequate power supply to the entire on-board network of a vehicle during the different driving phases.
摘要:
Various systems and methods for enhancing the performance and utilization of a battery system are described. In one method, a configuration schedule for a battery system is determined based on communications received from an external unit and the cells of the battery system are reconfigured according to the determined configuration schedule. In another method, a sequence of one or more pulses is used for energy transfer from or to at least one cell of the battery system, wherein at least one parameter of one of the sequence and the one or more pulses, is varied in a random manner. The above-noted pulse sequence may be utilized while the battery system is not supplying power to an external load.
摘要:
Included are: a plurality of buses 4A and 4B; a number of sets of battery banks 2 (2 1 , 2 2 , ..., 2 n ) formed by serially connecting one or a plurality of battery cells 12 capable of charging and discharging, with the number thereof being larger than the number of buses 4A and 4B; switches 3 (3 1 , 3 2 , ..., 3 n ) provided for each of the battery banks 2 and serially connected to the battery banks 2 to switch connection between the battery banks 2 and the DC buses 4A and 4B; DC-DC converters 5A and 5B as many as the number of buses 4A and 4B that charge the respective battery banks 2 via the buses 4A and 4B or supply discharged power from the respective battery banks 2 received via the buses 4A and 4B to a load device 9; voltage detectors 6 (6 1 , 6 2 , ..., 6 n ) that detect voltage of the respective battery banks 2; and a controller 7 that controls the switch 3 based on at least the voltage detected by the voltage detector 6.
摘要:
A power converter includes a DC/DC converting circuit and a first energy storage element. The DC/DC converting circuit includes a first output terminal and a second output terminal. The first energy storage element includes a first terminal and a second terminal. The first output terminal of the DC/DC converting circuit is electrically connected to one terminal of an external load. The first terminal of the first energy storage element is electrically connected to the second output terminal of the DC/DC converting circuit. The second terminal of the first energy storage element is electrically connected to the other terminal of the external load. The DC/DC converting circuit is configured to provide a variable electric power. The power converter provides the power supply according to the DC/DC converting circuit and the first energy storage element, and the variable electric power is less than the power required by the external load.
摘要翻译:电力转换器包括DC / DC转换电路和第一储能元件。 DC / DC转换电路包括第一输出端和第二输出端。 第一能量存储元件包括第一端子和第二端子。 DC / DC转换电路的第一输出端子电连接到外部负载的一个端子。 第一能量存储元件的第一端子电连接到DC / DC转换电路的第二输出端子。 第一能量存储元件的第二端子电连接到外部负载的另一端子。 DC / DC转换电路被配置为提供可变电力。 电力转换器根据DC / DC转换电路和第一储能元件提供电源,可变电力小于外部负载所需的功率。
摘要:
The power converter (50) includes a first operation mode in which each of switching elements (S 1 to S4) is controlled on or off independently so as to perform a power conversion between a load (30) and both a first DC power source (10) and a second DC power source (20) and a second operation mode in which every two of the switching elements (S 1 to S4) are controlled on or off concurrently so as to perform the power conversion between the load (30) and the first DC power source (10) or the second DC power source (20). A switching speed at which when each of the switching elements (S 1 to S4) is turned on or turned off is controlled in accordance with the operation mode. Specifically, the switching speed in the second operation mode is higher than the switching speed in the first operation mode.