TWM604513U - DC power supply with three power systems - Google Patents

Abstract

This creation provides a DC power supply with three sets of power supply systems, including a main power supply module, a backup power supply module, a regulated output module, a first switch, a charging module, a protection module, and a The second switch, a third switch and a control unit. The control unit is connected to the main power module, the backup power module, the energy storage power module, the protection module, the first switch, the second switch and the third switch. The control unit is adapted to monitor the main power supply module, the backup power supply module and the energy storage power supply module, and then control the protection module, the first switch, the second switch, and the third switch according to the monitoring result.

Description

DC power supply with three power systems

The present invention relates to a DC power supply with three groups of power supplies, in particular to a supply device that can maintain the power supply of the equipment to facilitate the operation of the existing power system when the external power supply is stopped.

Capacitor Trip Device (CTD) is a stability device used to protect the power supply system of its switchboard. Its purpose is to avoid subsequent device damage caused by normal power system failure or sudden power failure and high voltage. The principle is that when the power supply of the power supply is interrupted, the power of the capacitor in the capacitor trip device is supplied to protect the subsequent device from damage, and it can still operate for a short period of time.

Although the capacitor trip device can solve the problem of temporary power failure, the capacity of the capacitor itself is quite limited. Even if the size of the capacitor is increased, it can only last up to 10 seconds after the power failure, and the price of high-spec capacitors is also quite high. Another solution is the uninterrupted power system (UPS), but the uninterrupted power system uses lead-acid batteries for backup power, and the lead-acid battery itself has a short lifespan and has the disadvantages of self-discharge and decay, and the uninterrupted power system is an emergency The backup system has a low utilization rate. Lead-acid batteries are more likely to be damaged if they have not been charged and discharged for a long time.

Therefore, how to solve the above-mentioned problems is worth considering for those who are generally knowledgeable in the field.

This creation provides a DC power supply with a three-group power system, replacing traditional capacitors with lithium batteries, and maintaining battery activity through regular charging and discharging.

This creation provides a DC power supply with three sets of power supply systems, including a main power supply module, a backup power supply module, a regulated output module, a first switch, a charging module, a protection module, and a The second switch, a third switch and a control unit. The control unit is connected to the main power module, the backup power module, the energy storage power module, the protection module, the first switch, the second switch and the third switch. The control unit is adapted to monitor the main power supply module, the backup power supply module and the energy storage power supply module, and then control the protection module, the first switch, the second switch, and the third switch according to the monitoring result.

This creation is about a DC power supply with three sets of power supply systems, where the three sets of power supplies include the main power module (providing the first set of power, the first power from the outside), and its own energy storage power supply The module (provides the second set of power from the built-in energy storage components, such as lithium batteries) and the backup power module (provides the third set of power, from the external second power), and the control unit protects the module through the switch The way of group, first switch, second switch and third switch controls the power supply mode of the three groups of power supplies, so as to ensure that the DC power supplies of the three groups of power systems can supply stable voltage at any time.

Furthermore, the DC power supply with three sets of power supply systems in this creation also includes an activation mechanism for the energy storage power supply module. The energy storage power supply module is kept within the ideal storage power range through the charging and discharging mechanism, and the The energy storage power supply module is discharged and then recharged to maintain the performance of the energy storage power supply module, which can prevent the energy storage power supply module from being overcharged or overdischarged for a long time.

Traditional capacitor trip devices and uninterruptible power systems have disadvantages such as poor sustainability (capacitor capacity is limited), short life (lead-acid batteries decay faster), and lack of monitoring mechanisms. This creation can effectively overcome the traditional shortcomings through the setting of multiple power sources and the activation mechanism of the energy storage power module, and greatly improve the sustainability and battery life after power failure.

10: Main power module

20: Spare power supply module

30: Regulated output module

100: DC power supply with three groups of power systems

110: First switch

120: second switch

130: third switch

140: charging module

150: Energy storage power module

160: control unit

161: Protection Module

162: light module

170: voltage converter

180, 180a, 180b: AC to DC converter

Figure 1 shows a schematic diagram of a DC power supply with three power systems.

Please refer to Figure 1. Figure 1 shows a schematic diagram of a DC power supply with three sets of power systems. The DC power supply 100 with three sets of power supply systems in this creation is electrically connected to a first power supply and a second power supply externally, for example, the first power supply and the second power supply are provided by a power company or a DC power supply system The power supply is usually a DC 100~370V or AC 85~265V power supply.

The DC power supply 100 with three sets of power supply systems in this creation includes a main power supply module 10, a backup power supply module 20, a first switch 110, a second switch 120, a third switch 130, and a charging module. Group 140, an energy storage power supply module 150, a control unit 160, a plurality of voltage converters 170, a plurality of AC-DC converters 180, and a regulated output module 30.

The main power supply module 10, the backup power supply module 20, and the stabilized output module 30 are externally connected terminals of the DC power supply 100 with three power supply systems. Among them, the main power supply module 10 and the backup power supply module 20 are respectively connected to the first power supply and the second power supply. That is, the main power supply module 10 and the backup power supply module 20 are the inputs of the DC power supply 100 with three power supply systems. Terminal. The regulated output module 30 is connected to an external load (electrical equipment), that is, the regulated output module 30 is the output terminal of the DC power supply 100 with three sets of power systems, and the regulated output module 30 also has More stable voltage output function.

The first switch 110 is electrically connected between the stabilized output module 30 and the main power module 10; the second switch 120 is electrically connected between the stabilized output module 30 and the energy storage power module 150; third The switch 130 is electrically connected between the stabilized output module 30 and the backup power module 20. In other words, the power source of the regulated output module 30 has three sources: the main power module 10, the energy storage power module 150, and the backup power module 20. The first switch 110, the second switch 120 and the third switch 130 control which power supply supplies power to the regulated output module 30.

The plurality of voltage converters 170 and the plurality of AC to DC converters 180 are adapted to convert the output power of the main power supply module 10, the energy storage power supply module 150, and the backup power supply module 20 into suitable voltage stabilization through step-up or step-down. The voltage of the output module 30. The AC-DC converter 180 is electrically connected between the main power module 10 and the first switch 110, and between the backup power module 20 and the third switch 130, respectively. The plurality of voltage converters 170 are respectively electrically connected between the AC-DC converter 180 and the first switch 110, between the energy storage power module 150 and the second switch 120, and between the AC-DC converter 180 and the third switch 130. between.

The AC-DC converter 180 is also suitable for receiving the voltage from the main power module 10 or the backup power module 20. Wherein, the AC-DC converter 180a converts the output voltage of the main power module 10 into a voltage suitable for the energy storage power module 150 or the regulated output module 30. The AC-DC converter 180b converts the output voltage of the backup power module 20 into a voltage suitable for the regulated output module 30. In other words, the AC-to-DC converter 180 can adapt to the main power supply module 10 or the backup power supply module 20 of different voltage output, so that the DC power supply 100 with three sets of power supply systems of the present invention can be connected to power supplies of different specifications.

The charging module 140 is electrically connected to the main power module 10, preferably connected to the main power module 10 via an AC-DC converter 180, and the energy storage power module 150 is electrically connected to the charging module 140 and the A protection module 161 is also provided between the two switches 120 and between the charging module 140 and the energy storage power module 150.

The charging module 140 is adapted to convert the power from the AC-DC converter 180a into a voltage suitable for charging the energy storage power module 150. The protection module 161 decides whether to allow the charging module 140 to charge the energy storage power module 150. In addition, the energy storage power supply module 150 is, for example, a battery, preferably a lithium battery.

The control unit 160 is connected to the main power module 10, the backup power module 20, the protection module 161, the energy storage power module 150, the first switch 110, the second switch 120, and the third switch 130. And the control unit 160 It is suitable for monitoring the main power module 10, the backup power module 20 and the energy storage power module 150, and then controls the protection module 161, the first switch 110, the second switch 120, and the third switch 130 according to the monitoring result.

The protection module 161 is adapted to detect a stored power of the energy storage power module 150, that is, to determine the power of the energy storage power module 150, and the protection module 161 also has a disconnection or conduction mode. In addition, the control unit 160 also includes a power detection module, adapted to detect the voltage values of the main power module 10 and the backup power module 20, thereby determining whether the main power module 10 and the backup power module 20 are normal powered by.

Further, the control unit 160 controls the protection module 161, the first switch 110, the second switch 120, and the voltage value of the main power module 10 and the backup power module 20 according to a stored power of the energy storage power module 150 The third switch 130.

In one embodiment, when the control unit 160 detects that the voltage value of the main power supply module 10 is lower than a power setting value, the control unit 160 will send a pilot signal to the second switch 120 and send a disconnection signal to the protection module Group 161, first switch 110 and third switch 130. In this embodiment, the power supply setting value is the preset voltage output value of the regulated output module 30, and the voltage value of the main power supply module 10 is lower than a power supply setting value, which means that the main power supply module 10 cannot provide sufficient If the voltage reaches the regulated output module 30, the power may be cut off.

At this time, the control unit 160 turns off the protection module 161, the first switch 110, and the third switch 130, and turns on the second switch 120, and the energy storage power supply module 150 replaces the main power supply module 10 to perform regulated output The module 30 provides power. That is, when the main power supply module 10 cannot supply power, the energy storage power supply module 150 provides power to the regulated output module 30 through the second switch 120, and continues to supply power to the regulated output module 30 to avoid damage to subsequent connections. Electric equipment.

In one embodiment, when the voltage value of the main power supply module 10 is lower than the power setting value, and the storage capacity of the energy storage power supply module 150 is lower than a battery setting value, the control unit 160 transmits a pilot signal to the third switch 130, The disconnection signal is transmitted to the first switch 110 and the second switch 120. The battery setting value is the lowest battery power suitable for the battery.

In this embodiment, the output voltage of the main power module 10 is insufficient, and the power of the energy storage power module 150 is also lower than the ideal power. At this time, the control unit 160 turns off the first switch 110 and the second switch 120, so that The three switches 130 are turned on to allow the backup power module 20 to supply power to the regulated output module 30. That is, the backup power supply module 20 will be used as a backup power supply. When neither the main power supply module 10 nor the energy storage power supply module 150 can provide power, the backup power supply module 20 performs the operation on the regulated output module 30 through the third switch 130. powered by.

In one embodiment, when the voltage value of the main power module 10 is higher than the power setting value, and the storage capacity of the energy storage power module 150 is lower than a battery setting value, the control unit 160 transmits the pilot signal to the first switch 110 And the protection module 161 to transmit a disconnection signal to the second switch 120 and the third switch 130.

In this embodiment, the voltage output of the main power module 10 is normal, but the energy storage power module 150 has insufficient power. Therefore, the control unit 160 turns off the second switch 120 and the third switch 130, and turns on the protection module 161 and the first switch 110. In this way, the main power module 10 can supply power to the regulated output module 30 and at the same time charge the energy storage power module 150.

In one embodiment, when the storage capacity of the energy storage power supply module 150 is higher than a battery upper limit value, the control unit 160 transmits a conductive signal to the protection module 161 and the second switch 120, and transmits a disconnection signal to the first switch 110 and With the third switch 130, the storage capacity of the energy storage power module 150 is lower than the upper limit of the battery. Among them, the battery upper limit is the ideal upper limit of the battery power.

In this embodiment, the power of the energy storage power module 150 is higher than the upper limit of the battery, indicating that the power of the energy storage power module 150 is too high. Therefore, the control unit 160 turns off the first switch 110 and the third switch 130, and turns on the protection module 161 and the second switch 120. Temporarily let the energy storage power module 150 supply the regulated output module 30 Until the energy storage power of the energy storage power module 150 is lower than the upper limit of the battery, that is, the energy storage power module 150 is appropriately discharged to keep the power of the energy storage power module 150 within a proper range.

In the foregoing embodiment, the battery setting value and the battery upper limit mentioned are the optimal operating power of the battery. Through the control of the control unit 160, the battery can be prevented from being fully charged or insufficient for a long time, and the battery life can be ensured. In a preferred embodiment, the battery setting value is 20%, and the battery upper limit value is 80%.

In one embodiment, the control unit 160 will periodically transmit the conduction signal to the second switch 120, and transmit the disconnection signal to the protection module 161, the first switch 110 and the third switch 130 until the energy storage power module 150 is low. After the battery setting value, the control unit 160 transmits the conduction signal to the first switch 110 and the protection module 161, and transmits the disconnection signal to the second switch 120 and the third switch 130, until the storage capacity of the energy storage power module 150 is equal to the Upper battery limit.

In this embodiment, the control unit 160 will periodically perform a cycle of discharging and charging the energy storage power module 150 to maintain the activity of the battery to extend its life. For example, once a week or once a month. Therefore, the control unit 160 first disconnects the protection module 161, the first switch 110, and the third switch 130, and turns on the second switch 120, so that the energy storage power supply module 150 discharges until the energy storage power supply module 150 Lower than the battery setting value.

When the storage capacity of the energy storage power module 150 is lower than the battery setting value, the control unit 160 turns off the second switch 120 and the third switch 130, and turns on the protection module 161 and the first switch 110, so that the main power module 10 The regulated output module 30 is supplied with power, and the energy storage power module 150 is charged at the same time. Until the storage capacity of the energy storage power supply module 150 reaches the upper limit of the battery, the protection module 161 is disconnected, and the charging of the energy storage power supply module 150 is stopped. That is to complete a cycle of discharge and charge.

In one embodiment, the DC power supply 100 with three power supply systems further includes a light module 162. The light module 162 is electrically connected to the control unit 160, and the light module 162 is used for storing power The amount and voltage value change the light signal. The light module 162 includes a plurality of battery power indicators, a main power module indicator, and a second power indicator (not shown).

Among them, the battery power indicator is adapted to be turned on according to the stored power. Furthermore, the plurality of battery power indicator lights are arranged in a linear arrangement, and the number of lights to be turned on is determined according to the power storage power of the energy storage power supply module 150, and the number of lights that have been turned on indicates the power storage power of the energy storage power supply module 150. The maintenance personnel can know the storage capacity of the energy storage power module 150.

The main power module indicator and the standby power indicator light respectively correspond to the voltage values of the main power module 10 and the standby power module 20. The main power module indicator lights when the voltage value of the main power module is higher than the power setting value. The standby power module indicator lights when the voltage value of the standby power module is higher than the power setting value.

In other words, the main power module indicator light indicates whether the main power module 10 provides power to the regulated output module 30, and the standby power module indicator light indicates whether the standby power module 20 provides power to the regulated output module 30. The maintenance personnel can recognize the main power module 10 or the backup power module 20 to supply power through the main power module indicator and the standby power indicator.

The DC power supply 100 with three sets of power supply systems in this invention uses lithium batteries instead of traditional capacitors as an alternative power source. In addition, the lithium battery has a better capacity, which can provide a longer backup power source after a power failure. In addition, the DC power supply 100 with three power supply systems in this creation also controls the charging and discharging state of the energy storage power supply module 150 through the control unit 160, so as to keep the energy storage power supply module 150 within the ideal storage power range, and further Through regular discharge and charge cycles, the energy storage power supply module 150 is kept active, which can prolong the service life of the battery and provide a more reliable protection mechanism for the DC power supply 100 with a three-group power system.

This creation is described above with examples, but it is not used to limit the scope of patent rights claimed by this creation. The scope of its patent protection shall be determined by the attached scope of patent application and its equivalent fields. Anyone with ordinary knowledge in the field, without departing from the spirit or scope of this patent, makes changes or modifications that are equivalent changes or designs completed under the spirit of this creation, and should be included in the following patent scope Inside.

10: Main power module

20: Spare power supply module

30: Regulated output module

100: DC power supply with three groups of power systems

110: First switch

120: second switch

130: third switch

140: charging module

150: Energy storage power module

160: control unit

161: Protection Module

162: light module

170: voltage converter

180, 180a, 180b: AC/DC converter

Claims (4)

A DC power supply with three sets of power supply systems is electrically connected to an external first power supply and a second power supply. The DC power supply with three sets of power supply systems includes: a main power supply module electrically connected The first power supply to the outside; a backup power supply module which is electrically connected to the external second power supply; a first switch which is electrically connected to the main power supply module's regulated output module; a charging module, The protection module is electrically connected to the main power supply module; the protection module is an energy storage power supply module which is electrically connected to the charging module protection module; a second switch is electrically connected to the energy storage power supply module's regulated output Module; a third switch electrically connected to the third voltage converter regulated output module; and a control unit electrically connected to the main power module, the backup power module, the first switch, The second switch, the third switch, and the energy storage power supply module protection module, the control unit includes: a protection module, arranged between the charging module and the energy storage power supply module, suitable for detecting A stored power of the energy storage power module, which can be disconnected or conducted; and a power detection module, adapted to detect a voltage value of the main power module and the backup power module; and a regulated output The module is electrically connected to the first switch, the second switch, and the third switch, and is adapted to convert the voltage from the first switch, the second switch and the third switch into a voltage of a specific value; Wherein, when the voltage value of the main power module is lower than a power setting value, the control unit transmits a conductive signal to the protection module and the second switch, and transmits a disconnection signal to the first switch and the third switch. Switch; wherein, when the voltage value of the main power module is lower than the power setting value, and the storage power of the energy storage power module is lower than a battery setting value, the control unit transmits the pilot signal to the third Switch, transmitting the disconnection signal to the first switch and the second switch; wherein, when the voltage value of the main power module is higher than the power setting value, and the energy storage power module of the energy storage power module is lower than one Battery setting value, the control unit transmits the conduction signal to the first switch and the protection module, and transmits the disconnection signal to the second switch and the third switch; wherein, when the storage power of the energy storage power module Above a battery upper limit, the control unit transmits the conduction signal to the protection module and the second switch, and transmits a disconnection signal to the first switch and the third switch, until the energy storage power module The battery capacity is lower than the upper limit of the battery. As described in item 1 of the scope of the patent application, the DC power supply with three groups of power supply systems further includes a plurality of AC-DC converters electrically connected between the main power module and the first switch, Between the backup power module and the third switch; wherein, the charging module is electrically connected to the main power module through the AC-DC converter. As described in item 2 of the scope of patent application, the DC power supply with three groups of power supply systems further includes a plurality of voltage converters electrically connected between the AC and DC converter and the first switch, and the Between the energy storage power module and the second switch, between the AC-DC converter and the third switch. For example, the DC power supply with three sets of power supply systems as described in item 1 of the scope of patent application, wherein the control unit periodically transmits the conduction signal to the second switch, and transmits the disconnection signal to the protection module and the second switch. A switch and the third switch, until the stored power of the energy storage power module is lower than the battery setting value, then the control unit transmits the conduction signal to the first switch and the battery switch, and transmits the disconnection signal to the first switch The second switch and the third switch until the storage capacity of the energy storage power module is equal to the upper limit of the battery.

Images