Battery charging apparatus
A charging device and storage battery technology, applied in battery circuit devices, circuit devices, charging stations, etc., can solve problems such as maximum power limitation, and achieve the effect of realizing electric energy and realizing efficient utilization
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no. 1 approach
[0068] exist Figure 1 ~ Figure 2 The battery charging device according to the first embodiment 1 of the present invention is shown in . As shown in these figures respectively, figure 1 is a schematic diagram showing the storage battery charging device 100, figure 2 is shown figure 1 A circuit diagram of a circuit example of the first charging circuit 20. In this example, a power supply system that charges the parallel storage battery 1 and charges the externally connected load battery LB using a household commercial power supply AC is configured. Here, an example of charging a running battery of an automatic vehicle EV such as a plug-in hybrid vehicle or an electric vehicle as the load battery LB will be described. This storage battery charging device 100 includes a parallel storage battery 1, a first charging circuit 20 for charging the parallel storage battery 1 using a commercial power supply AC, a second charging circuit 30 for charging a load battery LB using the ...
no. 2 approach
[0098] In the above example, although the example of using only the commercial power supply as the power source for charging is shown, the present invention is not limited to the above structure, and other power sources can be added instead of the commercial power supply or on the basis of it. source. For example, a current source using natural energy such as a solar cell, a fuel cell, a generator, and the like can be utilized. image 3 A power supply system using the battery charging device 200 according to the second embodiment is shown in . In this figure, the same symbols are attached to the components substantially the same as those of the first embodiment, and their detailed descriptions are omitted. Here, by combining the juxtaposed storage battery 1 in a household power supply system that installs a solar battery to drive a household load HL and sells power to a power company, the power of the solar battery is used for a load battery LB such as a vehicle running batte...
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