A multi-power parallel input circuit
An input circuit and power input technology, applied in battery circuit devices, circuit devices, emergency protection circuit devices, etc., can solve problems such as heat dissipation design difficulties, reduce power release, and reduce battery utilization, so as to achieve low power loss and reduce power generation. Effects of heat and difficulty reduction
Active Publication Date: 2017-01-04
EDAN INSTR
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Problems solved by technology
Such a large loss not only reduces the utilization rate of the battery, but also makes the heat dissipation design quite difficult
Due to the certain conduction voltage drop of the Schottky diode, the release of electric energy is seriously reduced.
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[0032] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] see Figure 3 to Figure 9 , the present invention is a multi-power supply parallel input circuit, comprising: two or more power supply input branches, the power supply input branches are connected in parallel with each other, and connected to the parallel bus VCC-Bus;
[0034] The power input branch includes: an input power supply and a parallel circuit 301 connected to the input power supply, the parallel circuit 301 is connected to the parallel bus VCC-Bus, and each parallel circuit 301 is grounded;
[0035] The parallel circuit 301 includes: a switch circuit 302, a current sampling ci...
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The invention relates to the technical field of an electronic circuit, in particular to an input circuit with multiple power sources connected in parallel. The input circuit comprises two or more power input branches. After the power input branches are connected with one another in parallel, the power input branches are connected into a parallel bus. Each power input branch comprises an input power source and a parallel circuit, wherein the parallel circuit is connected with the parallel bus and is grounded, the parallel circuit comprises a switch circuit, a current sampling circuit, a control circuit, a system power source and a drive circuit, the switch circuit is connected with the parallel bus and the input power source, the current sampling circuit is connected between the switch circuit and the parallel bus, the current sampling circuit is connected whit the control circuit, the control circuit is connected with the switch circuit through the drive circuit, and the system power source is arranged between the control circuit and the parallel bus. By the adoption of the input circuit with the multiple power sources connected in parallel, the multiple power sources connected in parallel are isolated from one another, breakover drop voltage and power loss are small, and heat generated by the circuit is reduced.
Description
technical field [0001] The invention relates to the field of electronic circuits, in particular to a multi-power supply parallel input circuit . Background technique [0002] In existing electronic equipment, in order to improve battery capacity and reliability, multiple battery packs are connected in parallel to supply power to the system. There are applications that directly use multiple battery packs for parallel connection. Although this increases the capacity of the battery pack, if a certain battery fails or even short-circuits, it will affect the work of the entire system, and effective isolation between each battery pack cannot be achieved. There is also a power supply scheme that uses two batteries to switch, but it cannot really realize the parallel use of two batteries, that is, to allow two batteries to provide power to the system at the same time. [0003] In order to avoid the mutual influence between battery packs in the parallel power supply system of m...
Claims
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IPC IPC(8): H02J7/34H02H7/18
Inventor 王贤江胡振营
Owner EDAN INSTR