Control circuit of direct-current power supply bypass switch and power supply equipment
A bypass switch and control circuit technology, applied in battery circuit devices, circuit devices, emergency power supply arrangements, etc., can solve the problems of frequent bypass switch switching and affecting the service life of DC power supply, etc., to avoid frequent switching and prolong service life. , the effect of improving reliability
Active Publication Date: 2022-01-07
KEHUA DATA CO LTD +1
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Problems solved by technology
[0003] The embodiment of the present invention provides a control circuit and a power supply device of a DC power supply bypass switch, so as to solve the problem in the prior art that the bypass switch switches frequently and affects the service life of the DC power supply
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[0046] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0047] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0048] see figure 1 , which shows a schematic structural diagram of a control circuit for a DC power supply bypass switch provided by an embodiment of the present invention.
[0049]Such as figure 1 As shown, the backup power supply of the DC power supply is a batter...
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The invention belongs to the technical field of direct-current power supply control, and discloses a control circuit of a direct-current power supply bypass switch. According to the invention, the input end of the control circuit is used for being connected with a load interface, and the output end of the control circuit is used for being connected with the control end of the bypass switch; the control circuit is used for judging that a buck-boost module is abnormal when the voltage value of a load interface is larger than a first preset voltage or smaller than a second preset voltage and outputting a locking signal to the control end of the bypass switch according to the state of the buck-boost module, and the locking signal is used for controlling the working state of the bypass switch; the working state of the bypass switch comprises a closed state and an open state; and when the buck-boost module is abnormal, the locking signal is used for controlling the bypass switch to be switched from the off state to the on state and keeping the bypass switch in the on state. Normal work of the load can be guaranteed, and the reliability of direct-current power supply power supply is improved.
Description
technical field [0001] The invention belongs to the technical field of direct current power supply control, and in particular relates to a control circuit and power supply equipment of a direct current power supply bypass switch. Background technique [0002] In DC power supplies, batteries are often used as backup power. The current method of controlling the bypass switch of the DC power supply considers that the battery has an unstable output characteristic. In addition to using the bypass switch to output the voltage, a buck-boost module is added to output a stable voltage. When the buck-boost module fails, it can be passed The bypass switch outputs an external voltage. However, adding a buck-boost module may lead to an increase in the failure rate of the DC power supply, and further, frequent switching of the bypass switch affects the service life of the DC power supply. Contents of the invention [0003] The embodiment of the present invention provides a control cir...
Claims
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Login to View More IPC IPC(8): H02J9/06H02J7/00
CPCH02J9/061H02J7/0063H02J7/00712Y04S20/20
Inventor 陈志彬孟超杰陈宝煌李佳洲王峰王鹏飞周兴强王建伟张玉东田少新纳红卫
Owner KEHUA DATA CO LTD