Battery power supply device and battery power supply system
AssigneesZhangzhou Kehua Electric Technology Co., Ltd., Kehua Data Co., Ltd.
InventorsYongzhi Xu, Yangyuan Chen, Weilong Zhong, Baosen Zhang, Xin Yang
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Abstract
The present application provides a battery power supply device and a battery power supply system. The battery power supply device includes a control module, a DC/DC conversion module and a battery. The DC/DC conversion module includes N DC/DC converters connected in series or in parallel. When the battery power is constant, more output current can be obtained when the N DC/DC converters are in parallel, and more output voltage can be obtained when the N DC/DC converters are in series. Embodiments enable a battery power supply device or system to meet voltage requirements of different loads and improve applicability of a battery.
Claims16
A battery power supply device comprising:
- a control module, a battery and a direct current-direct current (DC/DC) conversion module;
- wherein
- the DC/DC conversion module is connected between the battery and a load, the DC/DC conversion module comprises N DC/DC converters, the N DC/DC converters comprise, respectively, N input ends that are connected with the battery, and comprise, respectively, N output ends that are connectable in series or in parallel, N being an integer not less than 2;
- and
- the control module is connected with the DC/DC conversion module, and is configured for determining a connection mode of the N output ends of the N DC/DC converters when the battery power supply device supplies power to the load, and controlling, according to the connection mode, an output voltage or an output current of the DC/DC conversion module to supply power to the load, the connection mode being in series or in parallel;
- wherein an output end of each DC/DC converter of the N DC/DC converters comprises a positive output end and a negative output end, N is an even number and the connection mode of the N output ends of the N DC/DC converters is in series, the positive output end of a first DC/DC converter of the N DC/DC converters is a positive output end of the DC/DC conversion module, the negative output end of an Nth DC/DC converter of the N DC/DC converters is a negative output end of the DC/DC conversion module, the negative output end of an ith DC/DC converter is connected with the positive output end of an (i+1)th DC/DC converter, a common end connected between the negative output end of an N/2th DC/DC converter and the positive output end of an (N/2+1)th DC/DC converter is connected with a neutral line, and 1≤i≤N−1, the load being connected between the positive output end of the DC/DC conversion module and the negative output end of the DC/DC conversion module.
A battery power supply system comprising a plurality of battery power supply devices, wherein a plurality of output ends of the plurality of battery power supply devices are connected in parallel,
- a battery power supply device of the plurality of battery power supply devices comprising:
- a control module, a battery and a direct current-direct current (DC/DC) conversion module, wherein
- the DC/DC conversion module is connected between the battery and a load, the DC/DC conversion module comprises N DC/DC converters, the N DC/DC converters comprise, respectively, N input ends that are connected with the battery, and comprise, respectively, N output ends that are connectable in series or in parallel, N being an integer not less than 2;
- and
- the control module is connected with the DC/DC conversion module, and is configured for determining a connection mode of the N DC/DC converters when the battery power supply device supplies power to the load, and controlling, according to the connection mode, an output voltage or an output current of the DC/DC conversion module to supply power to the load, the connection mode being in series or in parallel;
- wherein an output end of each DC/DC converter of the N DC/DC converters comprises a positive output end and a negative output end, N is an even number and the connection mode of the N output ends of the N DC/DC converters is in series, the positive output end of a first DC/DC converter of the N DC/DC converters is a positive output end of the DC/DC conversion module, the negative output end of an Nth DC/DC converter of the N DC/DC converters is a negative output end of the DC/DC conversion module, the negative output end of an ith DC/DC converter is connected with the positive output end of an (i+1)th DC/DC converter, a common end connected between the negative output end of an N/2th DC/DC converter and the positive output end of an (N/2+1)th DC/DC converter is connected with a neutral line, and 1≤i≤N−1, the load being connected between the positive output end of the DC/DC conversion module and the negative output end of the DC/DC conversion module.
Dependencies are inferred from the claim text.