A UPS power supply suitable for switch equipment

Abstract

The present invention discloses a UPS power supply suitable for switch equipment, including a charging module U1 connected to the main power output end of the switch, a battery pack connected to the positive pole of the charging input end of the charging module U1 through a relay K1, the negative pole of the battery pack connected to the negative pole of the charging input end of the charging module U1, the positive pole of the battery pack is used as the positive pole of the battery output through the relay K1, and the negative pole of the battery pack is used as the negative pole of the battery output, and also includes a power-off delay relay K2, the power supply input end of the power-off delay relay K2 is connected to the main power output end, the control end of the power-off delay relay K2 is connected to the main power output end, and the power-off delay relay K2 is provided with a normally open / normally closed contact connected to the control circuit of the relay K1. The present invention can provide fixed delayed power-off protection for equipment in the event of a main power failure; realizes the charge and discharge control of the battery pack, avoids the self-discharge of the battery pack in a non-working state, and can be widely used in the field of power supply technology.

Description

Technical Field

[0001] The invention relates to the technical field of power supply, and in particular to a UPS power supply suitable for switch equipment. Background Art

[0002] UPS power supply is an uninterruptible power backup power system with energy storage device, which is widely used in emergency power supply occasions, such as computers, servers, switch equipment, etc. In the core layer network switch equipment, when power outage, power replacement, voltage drop, sudden drop and mutation occur, UPS power supply device can provide stable backup power supply to the equipment, ensure that the equipment can work normally for a period of time, and add power failure protection and emergency use functions to the core layer network switch.

[0003] However, when the main power of the switch fails, the working environment of the UPS power battery pack is unstable, and it cannot provide fixed delayed power-off protection for the equipment, which will affect the reliability of the UPS power system. When the switch is not working, the battery pack will cause self-discharge, reducing the battery life. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a UPS power supply suitable for switch equipment, so that it can provide fixed delayed power-off protection for the equipment in the event of a main power failure, which is easy and reliable to use; and realizes the charge and discharge control of the battery pack, effectively avoiding the self-discharge of the battery pack in the non-working state, and improving the service life of the battery pack.

[0005] The present invention provides a UPS power supply suitable for switch equipment, comprising a charging module U1 whose power supply input end is connected to the main power output end of the switch, a battery pack connected to the positive pole of the charging input end of the charging module U1 through a relay K1, the negative pole of the battery pack is connected to the negative pole of the charging input end of the charging module U1, the positive pole of the battery pack is used as the positive pole of the battery output through the relay K1, and the negative pole of the battery pack is used as the negative pole of the battery output, and also includes a power-off delay relay K2, the power supply input end of the power-off delay relay K2 is connected to the main power output end of the switch, the control end of the power-off delay relay K2 is connected to the main power output end of the switch, and the power-off delay relay K2 is provided with a normally open / normally closed contact connected to the control circuit of the relay K1.

[0006] In the above technical solution, the relay K1 is provided with a built-in magnet connected to the control circuit, and control points 5 and control points 6 arranged on the control circuit are respectively provided on both sides of the magnet. The working circuit of the relay K1 is provided with normally open contacts 2 / 4 and armature control points 1 / 3, and the control point 6 and the armature control point 3 are respectively connected to the positive pole of the battery pack, and the positive pole of the charging input terminal of the charging module U1 is connected to the normally open contact 4, and the normally open contact 4 serves as the positive pole of the battery output, and the control point 5 is connected to the working circuit where the normally open / normally closed contacts of the power-off delay relay K2 are located.

[0007] In the above technical solution, the power-off delay relay K2 is provided with a control circuit having a pull-in magnet and control points A1 and A2 on both sides of the pull-in magnet, the two ends of the control point A1 are respectively connected to the pull-in magnet and the positive pole of the main power output terminal of the switch, the two ends of the control point A2 are respectively connected to the pull-in magnet and the negative pole of the main power output terminal of the switch, the power-off delay relay K2 is provided with a delay control point Y1 respectively connected to the pull-in magnet and the positive pole of the main power output terminal of the switch, the power-off delay relay K2 is provided with a working circuit consisting of an armature control point 15, a normally closed contact 16 and a normally open contact 18, the normally open contact 18 is connected to the negative pole of the battery pack and outputs to the outside as the negative pole of the battery output, and the armature control point 15 of the power-off delay relay K2 is connected to the control point 5 of the relay K1.

[0008] In the above technical scheme, it also includes a rectangular connector X1 whose energy input end is connected to the main power output end of the switch, the positive pole of the main power output port of the rectangular connector X1 is connected to the positive pole of the power supply input end of the charging module U1, the negative pole of the main power output port of the rectangular connector X1 is connected to the negative pole of the power supply input end of the charging module U1, the delay control point Y1 of the power-off delay relay K2 is connected to the positive pole of the main power output port of the rectangular connector X1, the control point A1 of the power-off delay relay K2 is connected to the positive pole of the main power output port of the rectangular connector X1, the control point A2 of the power-off delay relay K2 is connected to the negative pole of the main power output port of the rectangular connector X1, the normally open contact 4 serving as the positive pole of the battery output is connected to the positive pole of the input port of the rectangular connector X1, and the negative pole of the battery pack serving as the negative pole of the battery output is connected to the negative pole of the input port of the rectangular connector X1.

[0009] In the above technical solution, a signal switch connected to the signal end of the rectangular connector X1 is also included, and the normally open contact 18 of the power-off delay relay K2 is respectively connected to the negative electrode of the battery pack and the negative electrode of the input port of the rectangular connector X1 through the signal switch.

[0010] In the above technical solution, the signal end of the charging module U1 outputting the undervoltage signal UV1 is connected to the signal end of the rectangular connector X1.

[0011] In the above technical solution, an indicator light is also included which is provided with a charging terminal, a full-charge terminal and an undervoltage terminal, and the signal output end of the charging module U1 is connected to the signal input end of the indicator light.

[0012] Generally speaking, the UPS power supply consists of a charging module U1, a battery pack, a rectangular connector X1, a power-off delay relay K2, a relay K1 and an indicator light. The charging module U1 is connected to the main power output terminal of the switch and the input terminal of the battery pack, and is used to charge the battery pack. The charging module U1 outputs an undervoltage signal, a charging signal and a full-charge signal, which are displayed by the panel indicator light; the battery pack is connected to the charging module U1, the relay K1 and the power-off delay relay K2; the relay K1 has two groups of normally open contacts 2 / 4, the power-off delay relay K2 has a normally closed contact 16 and a normally open contact 18, and the relay K1 and the power-off delay relay K2 are connected to the battery pack output.

[0013] The UPS power supply delayed power-off protection method proposed by the present invention is as follows: 1) when the switch signal of the UPS power supply is closed and the main power of the switch is normal, the power-off delay relay K2 is energized, the instantaneous normally open contact 18 is closed to energize the relay K1, the normally open contacts 2 / 4 are closed, the UPS power supply circuit is turned on, the main power charges the battery pack through the charging module U1, and the battery pack is discharged to the outside; 2) when the switch signal of the UPS power supply is closed, but the main power of the switch fails, the power-off delay relay K2 loses power, receives the power-off signal and starts timing, after the delay time reaches the set time, the normally open contact 18 resets and disconnects, the relay K1 loses power, the normally open contacts 2 / 4 are disconnected, and the external output of the battery pack is cut off; 3) when the switch signal of the UPS power supply is disconnected, it is in a non-working state at this time, the relay K1 and the power-off delay relay K2 are not energized, the UPS power supply circuit is cut off, the UPS power supply does not work, and the input and output of the battery pack are cut off at the same time.

[0014] The present invention is applicable to a UPS power supply of a switch device, and has the following beneficial effects: the present technical solution can provide a fixed delayed power-off protection for the device in the event of a main power failure, and is convenient and reliable to use; and realizes the charge and discharge control of the battery pack, effectively avoiding the self-discharge of the battery pack in a non-working state, and prolonging the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a UPS power supply applicable to a switch device according to the present invention;

[0016] Figure 2 The present invention is a flow chart of a UPS power supply protection method applicable to switch equipment. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.

[0018] See also Figure 1 The present invention is applicable to a UPS power supply of a switch device, including a charging module U1 whose power input end is connected to the main power output end of the switch, a battery pack connected to the positive pole of the charging input end of the charging module U1 through a relay K1, the negative pole of the battery pack is connected to the negative pole of the charging input end of the charging module U1, the positive pole of the battery pack is used as the positive pole of the battery output through the relay K1, and the negative pole of the battery pack is used as the negative pole of the battery output, and also includes a power-off delay relay K2, the power input end of the power-off delay relay K2 is connected to the main power output end of the switch, the control end of the power-off delay relay K2 is connected to the main power output end of the switch, and the power-off delay relay K2 is provided with a normally open / normally closed contact connected to the control circuit of the relay K1.

[0019] The relay K1 is provided with a built-in magnet connected to the control circuit, and control points 5 and 6 arranged on the control circuit are respectively provided on both sides of the magnet. The working circuit of the relay K1 is provided with normally open contacts 2 / 4 and armature control points 1 / 3, and the control point 6 and the armature control point 3 are respectively connected to the positive pole of the battery pack. The positive pole of the charging input terminal of the charging module U1 is connected to the normally open contact 4, and the normally open contact 4 serves as the positive pole of the battery output. The control point 5 is connected to the working circuit where the normally open / normally closed contacts of the power-off delay relay K2 are located.

[0020] The power-off delay relay K2 is provided with a control circuit having a pull-in magnet and control points A1 and A2 on both sides of the pull-in magnet. The two ends of the control point A1 are respectively connected to the pull-in magnet and the positive pole of the main power output terminal of the switch, and the two ends of the control point A2 are respectively connected to the pull-in magnet and the negative pole of the main power output terminal of the switch. The power-off delay relay K2 is provided with a delay control point Y1 respectively connected to the pull-in magnet and the positive pole of the main power output terminal of the switch. The power-off delay relay K2 is provided with a working circuit consisting of an armature control point 15, a normally closed contact 16 and a normally open contact 18. The normally open contact 18 is connected to the negative pole of the battery pack and outputs to the outside as the negative pole of the battery output. The armature control point 15 of the power-off delay relay K2 is connected to the control point 5 of the relay K1.

[0021] The present invention is applicable to a UPS power supply of a switch device, and further comprises a rectangular connector X1 whose energy input end is connected to a main power output end of the switch, wherein the positive pole of the main power output port of the rectangular connector X1 is connected to the positive pole of the power supply input end of a charging module U1, the negative pole of the main power output port of the rectangular connector X1 is connected to the negative pole of the power supply input end of the charging module U1, the delay control point Y1 of the power-off delay relay K2 is connected to the positive pole of the main power output port of the rectangular connector X1, the control point A1 of the power-off delay relay K2 is connected to the positive pole of the main power output port of the rectangular connector X1, the control point A2 of the power-off delay relay K2 is connected to the negative pole of the main power output port of the rectangular connector X1, the normally open contact 4 as the positive pole of the battery output is connected to the positive pole of the input port of the rectangular connector X1, and the negative pole of the battery pack as the negative pole of the battery output is connected to the negative pole of the input port of the rectangular connector X1.

[0022] The present invention is applicable to a UPS power supply of a switch device, and also includes a signal switch connected to the signal end of the rectangular connector X1. The normally open contact 18 of the power-off delay relay K2 is respectively connected to the negative electrode of the battery pack and the negative electrode of the input port of the rectangular connector X1 through the signal switch.

[0023] The signal end of the charging module U1 outputting the undervoltage signal UV1 is connected to the signal end of the rectangular connector X1.

[0024] The present invention is applicable to a UPS power supply of a switch device, and further comprises an indicator light provided with a charging terminal, a full-charge terminal and an undervoltage terminal. The signal output end of the charging module U1 is connected to the signal input end of the indicator light.

[0025] The technical principle of the present invention is as follows:

[0026] The main power of the switch is connected to the UPS power supply through the rectangular connector X1. The charging module U1 is connected to the main power output of the switch and the input of the battery pack, and is used to charge the battery pack and output to the outside through the rectangular connector X1; the charging module U1 outputs undervoltage signal, charging signal and full power signal, which are displayed by the indicator light; the battery pack is connected to the charging module U1, relay K1, and power-off delay relay K2; the relay K1 has two groups of normally open contacts 2 / 4, and the power-off delay time relay K2 has a normally closed contact 16 and a normally open contact 18; in the charging circuit, the main power output of the switch is connected to the input of the charging module U1, and the output of the charging module U1 charges the battery pack through the relay K1, and the charging input + of the charging module U1 is connected to the normally closed contact 2 / 4 of the relay K1, and at the same time, the charging input + of the charging module U1 is connected to the battery output The output + of the switch is connected to the negative pole of the battery pack, the charging input - of the charging module U1 is connected to the negative pole of the battery pack, and the battery output + and battery output - of the battery pack are output to the outside through the rectangular connector X1; in the delayed power-off protection circuit, the main power output of the switch energizes the power-off delay relay K2, and the action circuit of the power-off delay relay K2 provides a power supply circuit for the relay K1, the main power output + of the switch is connected to A1 and Y1 of the power-off delay relay K2, the main power output - of the switch is connected to A2 of the power-off delay relay K2, 15 of the power-off delay relay K2 is connected to 5 of the relay K1, 6 of the relay K1 is connected to the positive pole of the battery pack, and 18 of the power-off delay relay K2 is connected to the switch signal of the UPS power supply; the switch signal of the UPS power supply is connected in series in the power supply circuit of the relay K1.

[0027] See also Figure 2 When the switch signal of the UPS power supply is closed (the UPS power supply is in working state) and the main power of the switch is normal, the main power output of the switch energizes the power-off delay time relay K2, and the instantaneous normally open contact 18 of the power-off delay time relay K2 is closed, so that the relay K1 is energized, and the normally open contacts 2 / 4 of the relay K1 are closed, the UPS power supply circuit is turned on, and the main power output of the switch charges the battery pack through the charging module U1, and the battery pack discharges and outputs to the outside.

[0028] When the switch signal of the UPS power supply is closed (the UPS power supply is in working state), but the main power of the switch fails and the power is cut off, the power-off delay time relay K2 loses power, and Y1 of the power-off delay time relay K2 receives the power-off signal and starts timing. After the delay time reaches the set time, the normally open contact 18 of the power-off delay time relay K2 is reset and disconnected, the power supply circuit of relay K1 is disconnected, and the normally open contacts 2 / 4 of relay K1 are disconnected, cutting off the external output of the battery pack, providing fixed delayed power-off protection for the equipment.

[0029] When the switch signal of the UPS power supply is disconnected, the UPS power supply is in a non-working state, the power supply circuit of relay K1 is disconnected, the normally open contacts 2 / 4 of relay K1 are disconnected, the power supply circuit of the UPS power supply is cut off, the UPS power supply does not work, and the input and output of the battery pack are cut off at the same time, which effectively avoids the self-discharge of the battery pack in the non-working state and increases the service life of the battery pack.

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A UPS power supply suitable for switch equipment, comprising a charging module U1 whose power input terminal is connected to the main power output terminal of the switch, a battery pack connected to the positive pole of the charging input terminal of the charging module U1 through a relay K1, the negative pole of the battery pack is connected to the negative pole of the charging input terminal of the charging module U1, the positive pole of the battery pack is used as the positive pole of the battery output through the relay K1, and the negative pole of the battery pack is used as the negative pole of the battery output, characterized in that: It also includes a power-off delay relay K2, the power supply input end of the power-off delay relay K2 is connected to the main power output end of the switch, the control end of the power-off delay relay K2 is connected to the main power output end of the switch, and the power-off delay relay K2 is provided with a normally open / normally closed contact connected to the control circuit of the relay K1; the power-off delay relay K2 is provided with a control circuit respectively provided with an attraction magnet, and control points A1 and A2 on both sides of the attraction magnet, the two ends of the control point A1 are respectively connected to the attraction magnet and the positive pole of the main power output end of the switch, and the two ends of the control point A2 are respectively connected to the attraction magnet and the negative pole of the main power output end of the switch, the power-off delay relay K2 is provided with a delay control point Y1 respectively connected to the attraction magnet and the positive pole of the main power output end of the switch, and the power-off delay relay K2 is provided with a working circuit composed of an armature control point 15, a normally closed contact 16 and a normally open contact 18 , the normally open contact 18 is connected to the negative pole of the battery pack and serves as the negative pole of the battery output to the outside, the armature control point 15 of the power-off delay relay K2 is connected to the control point 5 of the relay K1; the relay K1 is provided with a built-in magnet connected to the control circuit, and the two sides of the magnet are respectively provided with a control point 5 and a control point 6 arranged on the control circuit, the working circuit of the relay K1 is provided with a normally open contact 2 / 4 and an armature control point 1 / 3, the control point 6 and the armature control point 3 are respectively connected to the positive pole of the battery pack, the positive pole of the charging input end of the charging module U1 is connected to the normally open contact 4, the normally open contact 4 serves as the positive pole of the battery output, and the control point 5 is connected to the working circuit where the normally open / normally closed contact of the power-off delay relay K2 is located; it also includes an indicator light provided with a charging terminal, a full-charge terminal and an undervoltage terminal, and the signal output end of the charging module U1 is connected to the signal input end of the indicator light.

2. The UPS power supply suitable for switch equipment according to claim 1, characterized in that: It also includes a rectangular connector X1 whose energy input end is connected to the main power output end of the switch, the positive pole of the main power output port of the rectangular connector X1 is connected to the positive pole of the power supply input end of the charging module U1, the negative pole of the main power output port of the rectangular connector X1 is connected to the negative pole of the power supply input end of the charging module U1, the delay control point Y1 of the power-off delay relay K2 is connected to the positive pole of the main power output port of the rectangular connector X1, the control point A1 of the power-off delay relay K2 is connected to the positive pole of the main power output port of the rectangular connector X1, the control point A2 of the power-off delay relay K2 is connected to the negative pole of the main power output port of the rectangular connector X1, the normally open contact 4 serving as the positive pole of the battery output is connected to the positive pole of the input port of the rectangular connector X1, and the negative pole of the battery pack serving as the negative pole of the battery output is connected to the negative pole of the input port of the rectangular connector X1.

3. The UPS power supply suitable for switch equipment according to claim 2, characterized in that: It also includes a signal switch connected to the signal end of the rectangular connector X1. The normally open contact 18 of the power-off delay relay K2 is connected to the negative electrode of the battery pack and the negative electrode of the input port of the rectangular connector X1 through the signal switch.

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