TWM519349U - Power supply redundant system - Google Patents

Description

Power backup system

This creation relates to a power backup system, and in particular to a power backup system with a battery.

Common power backup systems, such as 1+1 backup, 2+1 backup or N+1 backup system, use at least two backup power supplies in parallel to provide load power. When one of the power supplies fails or fails to supply power, the other power supplies can provide sufficient power in time to maintain a normal and stable power supply to the load. However, in response to various power applications, the design of the power backup system is also challenged, and the power supply mechanism needs to be designed or modified to suit the user's expectations. It is a problem that the research and development personnel or manufacturers in the field need to make efforts to make the power backup system more convenient for users and provide stable power supply.

The present embodiment provides a power backup system that provides a regulated output of a load.

The present invention provides a power backup system including at least one backup power supply, a backplane circuit, and a battery backup module. The backup power supply has an input end and an output end, the input end receives alternating current, and the output end is used to generate the first direct current. The backplane circuit is coupled between the output of the backup power supply and the load. The battery backup module is coupled to the backplane circuit for generating a second direct current and receiving an external control command. The battery backup module includes a battery, a battery management unit, a charging circuit, at least a first DC/DC converter, an external control interface, and an on-line boosting unit. Battery management The unit is coupled to the battery to control the charging and discharging of the battery. The charging circuit is coupled to the output of the backup power supply and the battery management unit for charging the first DC power to the battery. The first DC/DC converter is coupled between the battery management unit and the backplane circuit, converts power from the battery into a second direct current, and provides the second direct current to the backplane circuit. Wherein, when the alternating current is present, the voltage of the second direct current output by the first direct current/direct current converter is lower than the voltage of the first direct current, so that the backplane circuit outputs the first direct current to the load. When the alternating current is not present, the backplane circuit outputs a second direct current from the battery backup module to the load. The external control interface is coupled to at least one of the battery management unit and the first DC/DC converter for receiving an external control command. The online boosting unit is coupled to the output end of the backup power supply, detects the first direct current, and raises the voltage of the second direct current to be greater than the voltage of the first direct current when the current of the first direct current exceeds a preset range, thereby Provides regulated output to the load.

According to an embodiment of the present invention, the battery backup module further includes a boosting unit coupled between the output of the backup power supply and the charging circuit.

According to an embodiment of the present creation, the external control interface is a universal serial bus (USB).

According to an embodiment of the present creation, the external control interface is a wireless control interface.

According to an embodiment of the present invention, the wireless control interface is a Bluetooth control interface that receives an external control command of the mobile communication device.

According to an embodiment of the present invention, the first DC/DC converter is a boost converter.

According to an embodiment of the present invention, the first DC/DC converter is a buck converter.

According to an embodiment of the present invention, the backplane circuit includes a current monitor.

According to an embodiment of the present invention, the backplane circuit includes a second DC/DC converter.

According to an embodiment of the present invention, the backplane circuit is installed in the module frame, and the module frame houses the backup power supply and the battery backup module.

In summary, the present embodiment provides a power backup system in which external battery power exists, in addition to power supply to the load, the battery can be charged at the same time. When the external AC power does not exist, the battery backup module supplies power. This power backup system utilizes The battery backup module of the battery can provide regulated output, and the online boost unit can monitor the surge current, thereby providing stable power supply to the load.

In order to further understand the features and technical contents of this creation, please refer to the following detailed description and drawings of this creation, but these descriptions and drawings are only used to illustrate this creation, not the right to this creation. The scope is subject to any restrictions.

1‧‧‧Power Backup System

11‧‧‧Reservation power supply

12‧‧‧ Backplane circuit

13‧‧‧Battery backup module

AC‧‧‧AC

V ₁ ‧‧‧First DC

V ₂ , V _2' ‧‧‧second DC

121, 125‧‧‧ Current monitor

122, 123, 124, 134, 135‧‧‧ DC/DC converters

F‧‧‧ node

131‧‧‧Battery

132‧‧‧Battery Management Unit

133‧‧‧Charging circuit

136‧‧‧External Control Interface

CT‧‧‧External Control Instructions

137‧‧‧Online booster unit

138‧‧‧Boost unit

12V, 5V, +12V, +5V, +3.3V, -12V‧‧‧ voltage

10‧‧‧Modular Framework

1 is a circuit block diagram of a power backup system provided by the present embodiment.

FIG. 2 is a schematic diagram of the appearance of a power backup system provided by the present embodiment.

[Embodiment of Power Backup System]

Please refer to FIG. 1. FIG. 1 is a circuit block diagram of a power backup system provided by the present embodiment. The power backup system 1 includes at least one backup power supply 11, a backplane circuit 12, and a battery backup module 13. The power backup system 1 is used to provide DC power to the load. The power backup system 1 converts power from the AC power or power from the battery 131 of the battery backup module 13 into DC power. As shown in FIG. 1, the power backup system 1 can provide a DC voltage of +12V, +3.3V, +5V or -12V, but the present creation is not limited thereto. This creation also does not limit the number of backup power supplies 11, there may be multiple backup power supplies 11, such as the common 1+1 backup power supply, 2+1 backup power supply, and even N+ 1 backup power supply.

The backup power supply 11 can also be referred to as an AC/DC converter. The backup power supply 11 has an input end and an output end. The input end receives the AC power AC, and the output end is used to generate the first DC power V ₁ . The first DC power V ₁ can be 12V or 5V. Usually, the voltage of 5V can also be Used for system standby voltage, but this creation is not limited. The backplane circuit 12 is coupled between the output of the backup power supply 11 and a load (not shown), which is a +12V, +3.3V, +5V or -12V DC output connected to the backplane circuit 12. end. The battery backup module 13 is coupled to the backplane circuit 12. As shown in FIG. 1 , the battery backup module 13 can be coupled to the backup power supply 11 to output an output of 12V, represented by a node f, to obtain a first direct current V _{1 of} 12V.

The backplane circuit 12 can include a current monitor 121, a DC/DC converter 122, a DC/DC converter 123, a DC/DC converter 124, and a current monitor 125. The current monitor 121 outputs the 12V output of the backup power supply 11 to the load. The DC/DC converter 122 steps down the 12V output from the backup power supply 11 to +3.3 and outputs it to the load. The DC/DC converter 123 steps down the 12V output from the backup power supply 11 to +5 and outputs it to the load. The DC/DC converter 124 converts the 12V output from the backup power supply 11 to -12V and outputs it to the load. In addition, the current monitor 125 transmits the 5V output from the backup power supply 11 to the load, which can be used for the standby power supply.

The battery backup module 13 is configured to generate the second direct currents V ₂ , V _{2 ′} and receive an external control command CT. The battery backup module 13 includes a battery 131, a battery management unit 132, a charging circuit 133, at least a DC/DC converter 134 (or 135), an external control interface 136, an on-line boosting unit 137, and a boosting unit 138. The battery management unit 132 is coupled to the battery 131. The charging circuit 132 is coupled to the output of the backup power supply 11 through the boosting unit 138 , and the charging circuit 132 is coupled to the battery management unit 132 . The DC/DC converters 134 and 135 are coupled between the battery management unit 132 and the backplane circuit 12. The on-line boosting unit 137 is coupled to the output of the backup power supply 11. The on-line boosting unit 137 of FIG. 1 is coupled to the 12V voltage output by the backup power supply 11 through the node f. In addition, the external control interface 136 can be coupled to at least one of the battery management unit 132 and the DC/DC converters 134, 135, but the present invention is not limited thereto. In an actual application, the external control interface 136 can be coupled to any circuit in the battery backup module 13 to control the battery backup module 13.

The charging circuit 133 for charging the first DC voltage V ₁ to the battery. In the present embodiment, after the boosting unit 138 first boosts the first direct current V ₁ , the charging circuit 133 charges the battery 131 through the battery management unit 132 by using the boosted first direct current V ₁ . However, this creation is not limited as such. When the voltage of the first direct current V ₁ is sufficient to charge the battery 131, the boosting unit 138 may also be omitted or removed.

The battery management unit 132 controls charging and discharging of the battery 131, and provides battery life detection and battery safety protection. The battery management unit 132 can monitor various parameters for charging and discharging the battery 131. For example: charging voltage, charging current, discharging voltage, discharging current, battery temperature, charging and discharging time, etc., and controlling the charging and discharging process of the battery 131 according to the monitored charging and discharging parameters, or protecting the battery 131 from damage or danger.

The DC/DC converters 134, 135 convert the power from the battery 131 into the second direct currents V ₂ , V _{2 '} and provide the second direct currents V ₂ , V _{2 '} to the backplane circuit 12 . The number of DC/DC converters 134, 135 is determined according to the design requirements. This creation does not limit the number of DC/DC converters used. In Figure 1, two DC/DC converters 134, 135 are respectively generated. Different output DC voltages are examples. In FIG. 1, the DC/DC converters 134, 135 are, for example, buck converters, but the present creation is not limited thereto. The DC/DC converters 134, 135 can also be boost converters. The DC/DC converter 134 outputs a second DC power V ₂ that is electrically connected to the 12V output of the backup power supply 11 . The DC/DC converter 135 outputs a second DC power V _{2 ' which} is electrically connected to the 5 V output of the backup power supply 11 . That is, in the embodiment of FIG. 1, one of the backup power supply 11 and the battery backup module 13 is capable of supplying a DC voltage of 12 V or 5 V to the backplane circuit 12.

When the alternating current AC is present, the battery backup module 13 can control the voltages of the direct currents V ₂ and V _{2 '} outputted by the direct current/direct current converters 134 and 134 to be lower than the voltage of the direct current V ₁ , so that the backplane circuit 12 will be the first direct current. 5V or 12V output voltage V ₁ to the load. At this time, the back plate of the first circuit 12 may also be other DC input voltage into a converted V 12V ₁ + 3.3V, -12V then transmitted to the load. In detail, the battery backup module 13 can detect whether the first DC voltage V ₁ outputted by the backup power supply 11 is normal (for example, 12V or 5V), if the output of the backup power supply 11 is normal, Then, the voltage of the second direct current V ₂ outputted by the DC/DC converter 134 can be controlled to be slightly lower than 12V of the first direct current V ₁ , for example, the voltage of the second direct current V ₂ is 11.4V. At this time, the voltage of the second direct current V _{2 ′} may also be slightly lower than 5 V of the first direct current V ₁ . For example, the voltage of the second direct current V _{2 ′} is 4.8 V, but the present invention does not limit the voltage value actually used. . At this time, battery backup module 13, the battery backup module 13 operating in the charging mode, the charging circuit 133 of the battery management unit 132 through the first DC voltage V ₁ to charge the battery 131 (boosted). In addition, regarding the manner in which the battery backup module 13 detects the first direct current V ₁ output by the backup power supply 11 , for example, the voltage of the node f is detected by the online boosting unit 137 , but the creation does not limit the battery. The backup module 13 detects the manner of the first direct current V ₁ .

When the AC power is not present, the backup power supply 11 cannot provide the first DC power V ₁ , and at this time, the battery backup module 13 can supply power, and the backplane circuit 12 will receive the second DC power V from the battery backup module 13 . ₂ , V _{2 '} output to the load. That is, the 12V voltage of the second direct current V ₂ from the battery backup module 13 is output to the load, or the 5V voltage of the second direct current V _{2 '} from the battery backup module 13 is output to the load, or even the back. The board circuit 12 converts 12V of the second direct current V ₂ into other voltages +3.3V, -12V and transmits it to the load. At this time, the battery backup module 13 operates in the discharge mode, and the battery backup module 13 can boost the voltage of the second direct currents V ₂ , V _{2 ′} to the same voltage as the first direct current V ₁ in the charging mode. For example, 12V or 5V, the battery backup module 13 is used instead of the backup power supply 11 for power supply.

The external control interface 136 is configured to receive an external control command CT. The external control interface 136 can be a wired control interface or a wireless control interface. Taking the wired control interface as an example, the external control interface 136 is, for example, a universal serial bus (USB). The wireless control interface can be, for example, a Bluetooth control interface to receive an external control command CT of a mobile communication device, such as a smart phone or tablet. Accordingly, the user can control the battery backup module 13 of the power backup system 1 by using an external device such as a smart phone, thereby adjusting or controlling various parameters of the battery backup module 13, such as charging and discharging parameters of the battery. The magnitude of the voltage output by the DC/DC converters 134, 135, or the operation of the boosting unit 137 on the control line. In actual application, the manufacturer or supplier of the power backup system 1 can provide an application that can be installed on a smart phone (or tablet). On the Internet, users can install the app on their own smart phones (or tablets), and then users can use their own smart phones (or tablets) to control the power backup system 1 The operating parameters provide the user with the ability to perform power management functions on their own, thereby improving the convenience of use and maintenance of the power backup system 1.

The online boost unit 137 can detect the first direct current V ₁ . The backup power supply 11 is illustrated by taking the output 12V as an example. In FIG. 1 , the line boosting unit 137 detects the 12V voltage of the first direct current V1 through the node f, and the current in the first direct current V ₁ exceeds the preset. In the range, the voltage of the second direct current V ₂ is increased to a voltage greater than the first direct current V ₁ , thereby providing a regulated output to the load. Line boosting unit 137 may monitor the first DC voltage V ₁ of the inrush current. According to a reasonable preset range of current during normal operation, when the current of the first direct current V ₁ exceeds a preset range, it can be determined that a surge current is generated at this time. In order to prevent the surge current from adversely affecting the load, the online boosting unit 137 can control the DC/DC converter 134 to increase the voltage of the second direct current V _{2 to} a voltage greater than the first direct current V ₁ , and the second direct current V ₂ Power is supplied to the current monitor 121, the DC/DC converter 122, the DC/DC converter 123, and the DC/DC converter 124. Similarly, the online boost unit 137 can also control the DC/DC converter 135 to boost the second DC power V _{2 '} , at which time the current monitor 125 outputs the second DC power V _{2 '} to the load.

Next, please refer to Figure 2. The backplane circuit 12 is mounted in the module frame 10. The module frame 10 can accommodate the backup power supply 11 and the battery backup module 13. Both the backup power supply 11 and the battery backup module 13 of the module frame 10 are replaceable. Through the modular design, the flexibility of the use of the power backup system can be improved.

[Possible effects of the examples]

In summary, the power backup system provided by the present embodiment can charge the battery at the same time when the external AC power is present, and the battery backup module can supply power when the external AC power does not exist. This power backup system utilizes a battery backup module with a battery to provide a regulated output and an on-line boost unit. Monitor surge currents to provide a stable supply of power to the load.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the patent of the present invention.

1‧‧‧Power Backup System

11‧‧‧Reservation power supply

12‧‧‧ Backplane circuit

13‧‧‧Battery backup module

AC‧‧‧AC

V ₁ ‧‧‧First DC

V ₂ , V _2' ‧‧‧second DC

121, 125‧‧‧ Current monitor

122, 123, 124, 134, 135‧‧‧ DC/DC converters

F‧‧‧ node

131‧‧‧Battery

132‧‧‧Battery Management Unit

133‧‧‧Charging circuit

136‧‧‧External Control Interface

CT‧‧‧External Control Instructions

137‧‧‧Online booster unit

138‧‧‧Boost unit

12V, 5V, +12V, +5V, +3.3V, -12V‧‧‧ voltage

Claims (10)

A power backup system includes: at least one backup power supply having an input end and an output end, the input end receiving an alternating current, the output end is used to generate a first direct current; and a backplane circuit is coupled The output terminal of the backup power supply is connected to a load; and a battery backup module coupled to the backplane circuit for generating a second direct current and receiving an external control command, the battery backup The module includes: a battery; a battery management unit coupled to the battery to control charging and discharging of the battery; a charging circuit coupled to the output of the backup power supply and the battery management unit for The first direct current charges the battery; at least one first DC/DC converter is coupled between the battery management unit and the backplane circuit, and converts power from the battery into the second direct current, and the The second direct current is supplied to the backplane circuit; wherein when the alternating current is present, the voltage of the second direct current output by the first direct current/direct current converter is lower than the voltage of the first direct current, so that the backplane is electrically Outputting the first direct current to a load; when the alternating current is not present, the backplane circuit outputs the second direct current from the battery backup module to the load; and an external control interface coupled to the battery management unit And at least one of the first DC/DC converters for receiving the external control command; and an on-line boosting unit coupled to the output end of the backup power supply to detect the first direct current And, when the current of the first direct current exceeds a predetermined range, boosting the voltage of the second direct current to a voltage greater than the first direct current, thereby providing a regulated output to the load. The power backup system according to item 1 of the claim, wherein the battery backup module further comprises: A boosting unit is coupled between the output of the backup power supply and the charging circuit. The power backup system according to item 1 of the claim, wherein the external control interface is a universal serial bus (USB). The power backup system of claim 3, wherein the external control interface is a wireless control interface. The power backup system of claim 4, wherein the wireless control interface is a Bluetooth control interface that receives the external control command of a mobile communication device. The power backup system of claim 1, wherein the first DC/DC converter is a boost converter. The power backup system of claim 1, wherein the first DC/DC converter is a buck converter. The power backup system of claim 1 wherein the backplane circuit includes a current monitor. The power backup system of claim 1 wherein the backplane circuit comprises a second DC/DC converter. The power backup system of claim 1, wherein the backplane circuit is mounted in a module frame, and the module frame houses the backup power supply and the battery backup module.