Double-battery charging and discharging isolation power supply circuit
An isolated power supply, charge and discharge technology, applied in the direction of battery circuit devices, load supply circuits, circuit devices, etc., can solve the problem that the battery cannot be fully charged, fully discharged, the battery pack does not realize independent charging and independent discharge, and the load cannot be guaranteed. smooth running issues
Pending Publication Date: 2021-01-08
深圳煜昇科技有限公司
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Problems solved by technology
[0011] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a dual-battery charging and discharging isolation power supply circuit to solve the following problems in the prior art: the two battery packs do not realize independent charging and independent discharging, and there is no difference between charging and discharging. Complete electrical isolation is achieved; the battery cannot be fully charged and fully discharged; during the switching process of the battery pack, when the two battery packs are disconnected and discharged at the same time, the continuous and stable operation of the load cannot be guaranteed
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Embodiment approach
[0061] As an embodiment of the present invention, refer to figure 1 , a dual-battery charging and discharging isolation power supply circuit also includes a first anti-sparking circuit 010 and a second anti-sparking circuit 020, the first anti-sparking circuit 010 is connected to the first battery pack 01, the second relay 12, the fourth The relay 14 and the MCU controller 116 are electrically connected, the second anti-sparking circuit 020 is electrically connected with the second battery pack 02, the second relay 12, the fourth relay 14 and the MCU controller 116 respectively, and the first anti-sparking circuit 010 is used to prevent arcing and sparking during the connection of the first battery pack 01 , and the second anti-sparking circuit 020 is used to prevent arcing and sparking during the connection of the second battery pack 02 .
[0062] As an embodiment of the present invention, refer to figure 2 , the supercapacitor circuit 114 includes a supercapacitor, a diode...
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A double-battery charging and discharging isolation power supply circuit comprises a first relay, a second relay, a third relay and a fourth relay used for charging and discharging switching of a first battery pack and a second battery pack; a first relay driving circuit used for synchronously driving the first relay and the second relay; a second relay driving circuit used for reverse-phase synchronous driving of the third relay and the fourth relay; a super capacitor circuit used for keeping supplying power to the load in the charging and discharging switching process of the first battery pack and the second battery pack; an anti-backflow circuit used for preventing the current of the load from flowing backwards to the charger; an MCU controller used for realizing charging and discharging switching of the first battery pack and the battery pack through the first relay driving circuit and the second relay driving circuit; and a voltage monitoring circuit used for continuously monitoring the discharge voltage of the first battery pack and the second battery pack by the MCU controller.
Description
technical field [0001] The invention relates to the technical field of power supply circuits, in particular to a dual-battery charging and discharging isolation power supply circuit. Background technique [0002] For application scenarios such as seismic station detection equipment power supply, backup emergency power supply, precision equipment power supply, etc., the power supply circuit is required to completely isolate the crosstalk caused by the charging circuit, such as conduction, surge, etc., to provide clean and stable power signals for electrical equipment . [0003] The current power supply technology cannot ensure the isolated power supply between the charger and the load, and it cannot ensure that the switching process cannot affect the load (that is, the electrical equipment) during the battery pack switching process, especially the load 04 that is sensitive to the power supply quality. [0004] The patent with the notification number CN201910615134.7 disclose...
Claims
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IPC IPC(8): H02J7/00H02J7/36H02J7/34G01R31/3835
CPCH02J7/0063H02J7/0068H02J7/0048H02J7/0029H02J7/36H02J7/345G01R31/3835
Inventor 夏全威
Owner 深圳煜昇科技有限公司