TW201924181A - Uninterruptible power operating apparatus - Google Patents

Abstract

An uninterruptible power operating apparatus comprises an energy storage element, a DC/DC converting circuit, a driving circuit and a switching element. The DC/DC converting circuit is electrically connected with the energy storage element to convert a first DC energy provided by the energy storage element into a second DC energy. The driving circuit is electrically connected between an AC power source and a load. The switching element is electrically connected between the DC/DC converting circuit and the driving circuit. When the AC power source outputs normally, the switching element is opened, and the driving circuit receives a first AC energy from the AC power source. When the AC power source is break or outputs abnormally, the switching element is closed, and the driving circuit receives the second DC energy through the switching element.

Description

UPS device

This case relates to a kind of uninterrupted power running device, especially when the AC power supply is abnormal or interrupted, the driving circuit that drives the load can quickly receive the power provided by the energy storage element, and the power conversion efficiency is higher and the cost is lower. Run the device without interruption.

Most precision electronic instruments and equipment rely on high quality and stable power supply to maintain normal operation. The uninterruptible power supply device can not only ensure the reliability of the power supply source, but also provide high-quality power waveforms, making the uninterruptible power supply device the best solution to ensure the reliability of the power supply and provide high-quality power. When the power failure running device is applied to the elevator, the elevator can still operate stably when the mains power is interrupted, ensuring personnel safety.

Figure 1 is a schematic diagram of the circuit structure of the first conventional uninterruptible operation device. The first conventional uninterruptible operation device 1 can be connected to the load L1 and the AC power source P1 at both ends, such as the city power, to provide backup power to the load L1 to continue operation when the AC power source P1 is interrupted or abnormal, and the load L1 can For but not limited to elevators. The conventional uninterruptible power operation device 1 includes a charging circuit 11, a charging and discharging battery 12, a DC / DC conversion circuit 13, a DC / AC conversion circuit 14, a three-port switching element 15, and a driving circuit 16. When the AC power source P1 is normally powered, the charging circuit 11 can convert the power provided by the AC power source P1 into backup power and store it in the charge / discharge battery 12. When the AC power source P1 is interrupted or abnormal, the backup power stored in the charge / discharge battery 12 is converted by the DC / DC conversion circuit 13 and the DC / AC conversion circuit 14, and the AC power is output from the DC / AC conversion circuit 14. The three-port switching element 15 is composed of a three-port switch, which performs corresponding path switching according to the state of the AC power source P1. That is, when the AC power source P1 is normally powered, the three-port switching element 15 is conductive to the AC power source P1 and drives. When the AC power supply P1 is interrupted or abnormal, the three-port switching element 15 is turned on between the DC / AC conversion circuit 14 and the driving circuit 16 instead. That is, depending on whether the operating condition of the AC power source P1 is normal or abnormal, the driving circuit 16 selectively receives the power provided by the AC power source P1 or the AC power output by the DC / AC conversion circuit 14 through the three-port switching element 15 to drive the load L1. Inside the motor device L11.

However, when the AC power supply P1 is interrupted or abnormal, it is known that the drive circuit 16 of the uninterruptible operation device 1 must be switched through the three-port switching element 15 in order to receive the AC power provided by the DC / AC conversion circuit 14, The port switching element 15 will have a certain time delay when the path is switched. As a result, when the AC power supply P1 is interrupted or abnormal, the driving circuit 16 cannot immediately switch through the three-port switching element 15 to receive the output from the DC / AC conversion circuit 14. The AC power, and thus the motor device L11 in the load L1 is continuously driven by the residual power, so that the motor device L11 in the load L1 will have a reduced efficiency or an interrupted operation when the AC power source P1 is interrupted or abnormal. In addition, it is known that the backup power stored in the charge and discharge battery 11 of the uninterruptible operation device 1 needs to be continuously processed by the DC / DC conversion circuit 13, the DC / AC conversion circuit 14, and the driving circuit 16 before being provided to the motor device L11 of the load L1. Therefore, the standby power actually generates converted power loss due to the three-level circuit formed by the DC / DC conversion circuit 13, the DC / AC conversion circuit 14, and the driving circuit 16.

Fig. 2 is a schematic diagram of the circuit structure of the second conventional uninterruptible operation device. The second type of conventional uninterruptible operation device 2 can be connected to the load L2 and the AC power source P2 at both ends, such as the city power, to provide backup power to the load L2 to continue operation when the AC power source P2 is interrupted or abnormal, and the load L2 It may be, but is not limited to, an elevator. The conventional UPS device 2 includes a charging circuit 21, a charging and discharging battery 22, a DC / DC conversion circuit 23, a DC / AC conversion circuit 24, a first switching element 251, a second switching element 252, and a three-port switching element 253. 、 开关 电路 26。 Driving circuit 26. When the AC power source P2 is normally powered, the charging circuit 21 can convert the power provided by the AC power source P2 into backup power and store it in the charge / discharge battery 22. When the AC power source P2 is interrupted or abnormal, the backup power stored in the charge / discharge battery 22 is converted by the DC / DC conversion circuit 23 and the DC / AC conversion circuit 24, and the AC power is output from the DC / AC conversion circuit 24. The first switching element 251 and the second switching element 252 are switched on or off according to the state of the AC power source P2. That is, when the AC power source P2 is normally powered, the first switching element 251 is turned on by the AC power source P2 and the driving circuit 26. And the second switching element 252 is turned off, the driving circuit 26 receives the electric power provided by the AC power source P2 through the first switching element 251, and then drives the motor device L21 in the load L2. When the AC power source P2 is interrupted or abnormal, the second switching element 252 is turned on between the charge and discharge battery 22 and the driving circuit 26, and the first switching element 251 is turned off. At this time, the backup power stored in the charge and discharge battery 22 is provided to The drive circuit 26, but because the voltage of the charge and discharge battery 22 is not high, the drive circuit 26 cannot be effectively started or operated by the backup power output from the charge and discharge battery 22, so the drive circuit 26 needs to be additionally provided with a DC / AC conversion circuit 24 is electrically connected to one of the EPS ports, so that the EPS circuit first receives the AC power output from the DC / AC conversion circuit 24 to start the driving circuit 26, and then the driving circuit 26 can receive the charge and discharge battery 22 provided by the second switching element 252 The electric power is backed up and converted to drive the motor device L21 in the load L2. The three-port switching element 253 is composed of a three-port switch, which performs corresponding path switching according to the state of the AC power source P2. When the AC power source P2 is normally powered, the three-port switching element 253 is turned on via the first switching element 251 Between the AC power supply P2 and the load L2, when the AC power supply P2 is interrupted or abnormal, the three-port switching element 253 is turned on between the DC / AC conversion circuit 24 and the load L2.

It can be known from the above that, since the driving circuit 26 of the second conventional uninterruptible operation device 2 needs to be additionally provided with an EPS port, the conventional uninterruptible operation device 2 has a higher cost. In addition, because the voltage of the charge-discharge battery 22 is not high, the current flowing through the wire used to transmit the backup power stored in the charge-discharge battery 22 to the drive circuit 26 is relatively large. Therefore, a thicker wire must be used. This increases the cost of the conventional UPS 2.

Therefore, how to develop a non-stop operating device that can improve the lack of the conventional technology is a problem that needs to be solved by those in the related technical field.

The purpose of this case is to provide an uninterruptible electrical operation device, which solves the problem that the conventional uninterruptible electrical operation device cannot allow the drive circuit that drives the load to quickly receive the energy provided by the energy storage element when the AC power supply is abnormal or interrupted, and has a relatively High conversion power loss and higher cost.

In order to achieve the above-mentioned object, one embodiment of the present invention is to provide a continuous power running device, which is electrically connected between the AC power source and the load, and receives the first AC power provided by the AC power source, and includes an energy storage element and a DC power source. / DC conversion circuit, driving circuit and switching element. The input end of the DC / DC conversion circuit is electrically connected to the energy storage element, and is used for converting the first DC power provided by the energy storage element to the second DC power when the AC power is interrupted or abnormal. The first connection terminal of the driving circuit is electrically connected to the AC power source, the output terminal of the driving circuit is electrically connected to the load, and the voltage of the second connection terminal of the driving circuit corresponds to the voltage of the first connection terminal of the driving circuit. A first end of the switching element is electrically connected to an output end of the DC / DC conversion circuit, and a second end of the switching element is electrically connected to a second connection end of the driving circuit. Wherein, when the AC power is normally supplied, the switching element is in an off state, and the first connection end of the driving circuit receives the first AC power and converts it into output power to drive the load; wherein, when the AC power is interrupted or abnormal, the switching element is In a conducting state, the second connection end of the driving circuit receives the second DC power through the second end of the switching element and converts it into output power for driving a load.

In order to achieve the above purpose, another embodiment of the present invention is to provide a non-stop operating device, which is electrically connected between the AC power source and the load, and receives the first AC power provided by the AC power source, and includes an energy storage element, DC / DC conversion circuit, driving circuit and switching element. The input end of the DC / DC conversion circuit is electrically connected to the energy storage element, and is used for converting the first DC power provided by the energy storage element to the second DC power when the AC power is interrupted or abnormal. The driving circuit includes a rectifier circuit, the first connection terminal of the driving circuit is electrically connected to the AC power source, the output terminal of the driving circuit is electrically connected to the load, and the voltage of the second connection terminal of the driving circuit is the voltage of the first connection terminal of the driving circuit. Corresponding. The input terminal of the rectifier circuit is electrically connected to the first connection terminal of the drive circuit, the output terminal of the rectifier circuit is electrically connected to the second connection terminal of the drive circuit, and the first AC power is rectified into the third DC power. A first end of the switching element is electrically connected to an output end of the DC / DC conversion circuit, and a second end of the switching element is electrically connected to a second connection end of the driving circuit. Wherein, when the AC power is normally supplied, the switching element is in an off state, and the first connection end of the driving circuit receives the first AC power and converts it into output power to drive the load; wherein, when the AC power is interrupted or abnormal, the switching element is It is in a conducting state, and the second connection end of the driving circuit receives the second DC power through the second end of the switching element and converts it into output power for driving a load.

Some typical embodiments embodying the features and advantages of this case will be described in detail in the description in the subsequent paragraphs. It should be understood that the present case can have various changes in different aspects, all of which do not depart from the scope of the present case, and that the descriptions and diagrams therein are essentially for the purpose of illustration, rather than limiting the case.

Please refer to FIG. 3, which is a schematic diagram of the circuit structure of the uninterruptible power running device of the first preferred embodiment of the present invention. As shown in FIG. 3, one end of the uninterruptible power running device 3 of this embodiment and an AC power source P3 is electrically connected, wherein the AC power source P3 can be, but is not limited to, the mains power. In addition, the other end of the uninterruptible operation device 3 is electrically connected to the load L3. The uninterruptible operation device 3 can drive the motor device L31 of the load L3 to operate, and the uninterruptible operation device 3 can further set the load L3. DC drive element integrated L32 for power supply, where load L3 can be, but not limited to, elevator, DC drive element integrated L32 can include AC drive element group L33 and DC drive element group L34, and AC drive element group L33 can be but not It is limited to the control devices and the like in the elevator, and the DC drive element group L34 may be, but not limited to, an elevator brake component and the like. The uninterruptible power operation device 3 includes energy storage elements such as a charge-discharge battery 31, a charging circuit 32, a DC / DC conversion circuit 33, a first DC / AC conversion circuit 34, a driving circuit 35, and a switching element 36. The switching element 36 may be, for example, a diode, a MOSFET, a relay, or other circuit elements that can be switched.

The charge-discharge battery 31 can output first DC power when the AC power P3 is interrupted or abnormal. The charging circuit 32 is electrically connected between the AC power source P3 and the charge / discharge battery 31. When the AC power source P3 normally supplies power, the charging circuit 32 receives and converts the first AC power output from the AC power source P3 to charge and discharge the battery 31. Charge it. In detail, the input terminal of the charging circuit 32 is electrically connected to the AC power source P3, and the output terminal of the charging circuit 32 is electrically connected to the charge-discharge battery 31.

The DC / DC conversion circuit 33 has an input terminal 331 and an output terminal 332. The input terminal 331 of the DC / DC conversion circuit 33 is electrically connected to the charge / discharge battery 31. When the AC power source P3 is interrupted or abnormal, the input terminal 331 of the DC / DC conversion circuit 33 receives the first DC power provided by the charge / discharge battery 31, and converts the first DC power to the second DC power, and outputs it through the output terminal 332. The second DC power. The first DC / AC conversion circuit 34 has an input terminal 341 and an output terminal 342. The input terminal 341 of the first DC / AC conversion circuit 34 is electrically connected to the output terminal 332 of the DC / DC conversion circuit 33. When the AC power source P3 is interrupted, When it is abnormal, the input terminal 341 of the first DC / AC conversion circuit 34 receives the second DC power output from the output terminal 332 of the DC / DC conversion circuit 33, so that the first DC / AC conversion circuit 34 converts the second DC power Is the second AC power, and then outputs the second AC power to the output terminal 342 of the DC / AC conversion circuit 34.

The driving circuit 35 has a first connection terminal 351, a second connection terminal 352, and an output terminal 353. The first connection terminal 351 of the driving circuit 35 is electrically connected to the AC power source P3, and the output terminal 353 of the driving circuit 35 is connected to the motor of the load L3. The device L31 is electrically connected. When the AC power source P3 is normally powered, the first connection terminal 351 of the driving circuit 35 receives and converts the first AC power into the output power, and outputs it to the motor device L31 of the load L3 through the output terminal 353 of the driving circuit 35 to drive the load. L3 motor device L31. In addition, the voltage of the second connection terminal 352 of the driving circuit 35 corresponds to the voltage of the first connection terminal 351 of the driving circuit 35, that is, the voltage at the second connection terminal 352 is approximately equal to the voltage at the first connection terminal 351.

The first terminal 361 of the switching element 36 is electrically connected to the output terminal 332 of the DC / DC conversion circuit 33. The second terminal 362 of the switching element 36 is electrically connected to the second connection terminal 352 of the driving circuit 35. The switching element 36 is based on the switching. The voltage difference between the first terminal 361 of the element 36 and the second terminal 362 of the switching element 36, and further switching causes the switching element 36 to be in an on state or an off state. Further, when the AC power source P3 is normally powered, the drive circuit The voltage of the second connection terminal 352 of 35 corresponds to the voltage of the first connection terminal 351. Therefore, the voltage of the second terminal 362 of the switching element 36 electrically connected to the second connection terminal 352 of the driving circuit 35 (corresponding to the AC power source) The voltage of the first AC power of P3) is greater than the voltage of the first terminal 361 of the switching element 36 (the voltage of the first DC power corresponding to the charge and discharge battery 31 is converted by the DC / DC conversion circuit 33 to the second DC power Voltage), so the switching element 36 is in the off state. At this time, the driving circuit 35 also converts the first AC power into output power and outputs it to the motor device L31 of the load L3 to drive the motor device L31 of the load L3. When the AC power source P3 is interrupted or abnormal, as described above, the voltage of the second terminal 362 of the switching element 36 electrically connected to the second connection terminal 352 of the driving circuit 35 is smaller than the voltage of the first terminal 361 of the switching element 36. The switching element 36 is turned on. At this time, the second connection terminal 352 of the driving circuit 35 receives the second DC power output from the DC / DC conversion circuit 33 through the switching element 36, and the driving circuit 35 converts the second DC power into the output power. In order to output the electric energy to the motor device L31 of the load L3 through the output terminal 353 of the driving circuit 35 to drive the motor device L31 of the load L3.

It can be known from the above that the uninterruptible power running device 3 in this case is provided with a switching element 36 between the DC / DC conversion circuit 33 and the driving circuit 35, so that when the AC power supply P3 is interrupted or abnormal, the second switching element 36 is used to switch the second The DC power is transmitted to the driving circuit 35, and since the switching element 36 uses the voltage difference between the first terminal 361 and the second terminal 362, the switching element 36 is switched on and off. Therefore, the switching element 36 of the passive element is turned on / The cut-off switching speed is better than the conventional three-port switching element 15 of the conventional uninterruptible operation device 1 shown in FIG. 1. Therefore, compared with the conventional uninterruptible operation device 1, when the AC power supply P1 is interrupted or abnormal, the driving circuit is 16 The three-port switching element 15 must be used for path switching to receive the lack of AC power provided by the DC / AC conversion circuit 14. The drive circuit 35 of the uninterruptible operation device 3 in this case can actually be interrupted at the AC power source P3 or When the abnormality occurs, the second DC power from the DC / DC conversion circuit 33 is immediately received to maintain the operation of the system. Therefore, when the uninterruptible power supply device 3 of this case is interrupted or abnormal, The motor device L31 that can continuously drive the load L3 ensures safety.

In addition, compared to the conventional uninterruptible operation of the charge / discharge battery 12 of the uninterruptible operation device 1, the backup power of the charge / discharge battery 12 is generated by the DC / DC conversion circuit 13, the DC / AC conversion circuit 14, and the driving circuit 16. Level of conversion power loss, since the non-stop operating device 3 in this case provides the first DC power to the load L3 through the DC / DC conversion circuit 33 and the drive circuit 35 when the first DC power is provided by the charge and discharge battery 31, Therefore, the first direct-current electrical energy loss of the charge-discharge battery 31 of the uninterruptible operation device 3 in this case is relatively small, in other words, the electrical energy conversion efficiency is relatively high. In addition, the drive circuit 35 of the uninterruptible operation device 3 in this case receives the second DC power through the DC / DC conversion circuit 33 and the switching element 36 without passing through the first DC / AC conversion circuit 34. A DC / AC conversion circuit 34 can select electronic components with lower power requirements, and has relatively better performance in terms of cost and performance.

What's more, compared with the conventional UPS, the drive circuit 26 requires an additional EPS port because of the need for an extra EPS port, and the use of a thicker wire requires higher cost problems. The first DC power of the charge / discharge battery 31 of the electric operation device 3 is boosted by the DC / DC conversion circuit 33 before being transmitted to the driving circuit 35, so the power transmitted by the DC / DC conversion circuit 33 to the driving circuit 35 is sufficient The drive circuit 35 is started to operate. Therefore, the uninterruptible operation device 3 in this case does not only need to provide an additional EPS port, but also because the voltage between the DC / DC conversion circuit 33 and the drive circuit 35 is higher, the current flowing through the wire is smaller than A small wire can be used for small reasons, so the uninterruptible operation device 3 in this case can relatively reduce production costs.

In some embodiments, the driving circuit 35 further includes a rectifier circuit 354 and a second DC / AC conversion circuit 355. The rectifier circuit 354 includes an input terminal 356 and an output terminal 357. The input terminal 356 of the rectifier circuit 354 is electrically connected to the first connection terminal 351 of the driving circuit 35, so as to receive the first AC power source P3 through the first connection terminal 351 of the driving circuit 35. An AC power, the rectifying circuit 354 is used for rectifying the first AC power into the third DC power when the first AC power of the AC power source P3 is received through the first connection terminal 351 of the driving circuit 35. The second DC / AC conversion circuit 355 includes an input terminal 358 and an output terminal 359. The input terminal 358 of the second DC / AC conversion circuit 355 is electrically connected to the output terminal 357 of the rectification circuit 354 and the second connection terminal 352 of the driving circuit 35. The output terminal 359 of the second DC / AC conversion circuit 355 is electrically connected to the output terminal 353 of the driving circuit 35. The input terminal 358 of the second DC / AC conversion circuit 355 can be selectively received through the output terminal 357 of the rectifier circuit 354. The third DC power or the second DC power is received through the second connection terminal 352 of the driving circuit 35, and then the third DC power or the second DC power is converted into output power, and the output power is output at the output terminal 359.

In some embodiments, the uninterruptible power operation device 3 further includes a three-port switching element 37. The three-port switching element 37 selectively integrates a straight AC drive element L32 from the AC power source P3 to the load L3 according to the power supply status of the AC power source P3. Or switch between the output terminal 342 of the first DC / AC conversion circuit 34 and the straight AC drive element integrated L32 of the load L3; wherein, when the AC power source P3 is normally powered, the three-port switching element 37 is turned on Between the AC power source P3 and the direct AC drive element integrated L32 of the load L3, so that the three-port switching element 37 supplies the first AC power provided by the AC power source P3 to the direct AC drive element integrated L32 of the load L3; When the AC power source P3 is interrupted or abnormal, the three-port switching element 37 is turned on between the output terminal 342 of the first DC / AC conversion circuit 34 and the straight AC drive element L32 of the load L3, so that the three-port switching element 37 The second AC power output from the output terminal 342 of the first DC / AC conversion circuit 34 is provided to the direct AC drive element integrated L32 of the load L3.

In some embodiments, the uninterruptible power operation device 3 further includes an output module 38, which is electrically connected between the three-port switching element 37 and the straight AC drive element integrated L32 of the load L3, and the output module 38 includes an AC output terminal 381 and power supply 382. The AC output terminal 381 is electrically connected between the three-port switching element 37 and the AC driving element group L33 of the straight AC driving element integrated L32 of the load L3. When the AC power source P3 is normally powered, the AC output terminal 381 receives the first AC power provided by the AC power source P3 to transmit the first AC power to the AC drive element group L33 of the straight AC drive element integration L32 of the load L3. When the AC power source P3 is interrupted or abnormal, the AC output terminal 381 receives the second AC power output from the output terminal 342 of the first DC / AC conversion circuit 34 to transmit the second AC power to the direct AC drive element of the load L3. Integrated L32 AC drive element group L33. The power supply 382 is electrically connected between the three-port switching element 37 and the DC driving element group L34 of the direct AC driving element integrated L32 of the load L3. When the AC power source P3 is normally powered, the power supply 382 receives and converts the first AC power into the fourth DC power to transmit the fourth DC power to the DC drive element group L34 of the straight AC drive element integrated L32 of the load L3. When the AC power supply P3 is interrupted or abnormal, the power supply 382 receives and converts the second AC power into the fourth DC power to transmit the fourth DC power to the DC drive element group L34, which is a straight AC drive element integrated L32 of the load L3. .

In some embodiments, since the first DC power of the charge / discharge battery 31 of the uninterruptible operation device 3 in this case is converted and boosted by the DC / DC conversion circuit 33 and then transmitted to the driving circuit 35, the battery is charged and discharged. 31 Can choose to use lower voltage batteries, such as lead-acid batteries.

Of course, the input terminal of the charging circuit 32 is not limited to be electrically connected to the AC power source P3 as shown in FIG. 3. In some embodiments, as shown in FIG. 4, the input terminal of the charging circuit 32 may be changed to a driving circuit. The second connection terminal 352 of 35 is electrically connected, and when the AC power source P3 is normally powered, the driving circuit 35 can further transmit the first AC power to the charging circuit 32 through the second connection terminal 352. The input terminal of the charging circuit 32 is electrically connected between the second connection terminal 352 of the driving circuit 35 and the second terminal 362 of the switching element 36. Similar to the foregoing, when the AC power P3 is normally supplied, The voltage of the connection terminal 352 corresponds to the voltage of the first connection terminal 351. Therefore, the voltage of the second terminal 362 of the switching element 36 electrically connected to the second connection terminal 352 of the driving circuit 35 is greater than the first terminal of the switching element 36. 361 voltage, the switching element 36 is in the off state; and when the AC power P3 is interrupted or abnormal, the voltage of the second terminal 362 of the switching element 36 electrically connected to the second connection terminal 352 of the driving circuit 35 is smaller than the switching element 36 The voltage of the first terminal 361 makes the switching element 36 in a conducting state, and the rest of the system operation modes are not described again.

Please refer to FIG. 5, which is a schematic diagram of the circuit structure of the uninterruptible power running device according to the third preferred embodiment of the present invention. As shown in FIG. 5, one end of the uninterruptible power running device 4 and the AC power source P4 in this embodiment are shown. Electrical connection. When the AC power source P4 is normally powered, the AC power source P4 can output the first AC power to the uninterruptible operation device 4. On the contrary, when the AC power source P4 is interrupted or abnormal, the AC power source P4 cannot continuously output power to The power-off operation device 4 and the AC power source P4 may be, but not limited to, a mains power. In addition, the other end of the uninterruptible power operation device 4 is electrically connected to the load L4. The uninterruptible power operation device 4 can drive the motor device L41 of the load L4 to operate, and the uninterruptible power operation device 4 can further set the load L4. The DC drive element integrated L42 is used for power supply, where the load L4 may be, but not limited to, an elevator. The DC drive element integrated L42 may include an AC drive element group L43 and a DC drive element group L44, and the AC drive element group L43 may be, but not It is limited to the control devices and the like in the elevator, and the DC drive element group L44 may be, but not limited to, an elevator brake component and the like. The uninterruptible power operation device 4 includes energy storage elements such as a charge-discharge battery 41, a charging circuit 42, a DC / DC conversion circuit 43, a driving circuit 44, a first DC / AC conversion circuit 45, and a switching element 46. The switching element 46 may be a diode, a MOSFET, a relay, or other circuit elements that can be switched.

The charge / discharge battery 41 can output first DC power when the AC power P4 is interrupted or abnormal. The charging circuit 42 is electrically connected between the AC power source P4 and the charge / discharge battery 41. When the AC power source P4 is normally powered, the charging circuit 42 receives and converts the first AC power output from the AC power source P4 to charge and discharge the battery 41. Charge it. In detail, the input terminal of the charging circuit 42 is electrically connected to the AC power source P4, and the output terminal of the charging circuit 42 is electrically connected to the charge-discharge battery 41.

The DC / DC conversion circuit 43 has an input terminal 431 and an output terminal 432. The input terminal 431 of the DC / DC conversion circuit 43 is electrically connected to the charge and discharge battery 41. When the AC power source P4 is interrupted or abnormal, the input of the DC / DC conversion circuit 43 is The terminal 431 receives the first DC power provided by the charge / discharge battery 41, converts the first DC power into the second DC power, and outputs the second DC power through the output terminal 432 of the DC / DC conversion circuit 43.

The driving circuit 44 has a first connecting terminal 441, a second connecting terminal 442, and an output terminal 443. The first connecting terminal 441 of the driving circuit 44 is electrically connected to the AC power source P4, and the output terminal 443 of the driving circuit 44 is connected to the motor of the load L4. The device L41 is electrically connected. When the AC power source P4 is normally supplied, the first connection terminal 441 of the driving circuit 44 receives and converts the first AC power into the output power, and outputs it to the motor device of the load L4 through the output terminal 443 of the driving circuit 44. L41 is a motor device L41 that drives a load L4. In addition, the voltage of the second connection terminal 442 of the driving circuit 44 corresponds to the voltage of the first connection terminal 441 of the driving circuit 44, that is, the voltage at the second connection terminal 442 is approximately equal to the voltage at the first connection terminal 441.

The first DC / AC conversion circuit 45 has an input terminal 451 and an output terminal 452. The input terminal 451 of the first DC / AC conversion circuit 45 and the second connection terminal 442 of the driving circuit 44 are electrically connected. The output terminal 452 of the conversion circuit 45 is electrically connected to the AC drive element group L43 of the load L4 straight AC drive element integration L42. When the AC power supply P4 is normally powered, the input terminal 451 of the first DC / AC conversion circuit 45 passes through the drive circuit. The second connection terminal 442 of 44 receives the first AC power from the AC power source P4 and rectifies the output power through the driving circuit 44. The output terminal 452 of the first DC / AC conversion circuit 45 outputs the output power to the direct current. The AC drive element L43 is an AC drive element group L43.

The first terminal 461 of the switching element 46 is electrically connected to the output terminal 432 of the DC / DC conversion circuit 43, the second terminal 462 of the switching element 46 is connected to the second connection terminal 442 of the driving circuit 44 and the first DC / AC conversion circuit 45. The input terminal 451 is electrically connected, wherein the switching element 46 is based on the voltage difference between the first terminal 461 of the switching element 46 and the second terminal 462 of the switching element 46, and further switching makes the switching element 46 in an on state or an off state. In other words, when the AC power P4 is normally supplied, the voltage of the second connection terminal 442 of the driving circuit 44 corresponds to the voltage of the first connection terminal 441 of the driving circuit 44. Therefore, the second connection terminal 442 of the driving circuit 44 is electrically The voltage of the second terminal 462 of the connected switching element 46 (corresponding to the voltage of the first AC power of the AC power source P4) is greater than the voltage of the first terminal 461 of the switching element 46 (corresponding to the first DC power of the charge and discharge battery 41). The voltage of the second DC electric energy converted by the DC / DC conversion circuit 43), so the switching element 46 is in the off state, and the driving circuit 44 also converts the first AC electric energy into the output electric energy and outputs it to the load L4. The motor device L41 is used to drive the motor device L41 of the load L4. As described above, when the AC power source P4 is interrupted or abnormal, the voltage of the second terminal 462 of the switching element 46 electrically connected to the second connection terminal 442 of the driving circuit 44 is smaller than the voltage of the first terminal 461 of the switching element 46, so that The switching element 46 is in a conducting state. At this time, the second connection terminal 442 of the driving circuit 44 receives the second DC power output from the DC / DC conversion circuit 43 through the switching element 46, and the driving circuit 44 converts the second DC power into output power. The output terminal 443 of the driving circuit 44 outputs and outputs electric energy to the motor device L41 of the load L4 to drive the motor device L41 of the load L4.

In some embodiments, the driving circuit 44 further includes a rectifier circuit 444 and a second DC / AC conversion circuit 445. The rectifier circuit 444 includes an input terminal 446 and an output terminal 447. The input terminal 446 of the rectifier circuit 444 is electrically connected to the first connection terminal 441 of the driving circuit 44 to receive the first power source P4 through the first connection terminal 441 of the driving circuit 44. An AC power, the rectifying circuit 444 is used for rectifying the first AC power into the third DC power when the first AC power of the AC power source P4 is received through the first connection terminal 441 of the driving circuit 44. The second DC / AC conversion circuit 445 includes an input terminal 448 and an output terminal 449. The input terminal 448 of the second DC / AC conversion circuit 445 is electrically connected to the output terminal 447 of the rectifier circuit 444 and the second connection terminal 442 of the driving circuit 44. The output terminal 449 of the second DC / AC conversion circuit 445 is electrically connected to the output terminal 443 of the driving circuit 44. The input terminal 448 of the second DC / AC conversion circuit 445 can be selectively received through the output terminal 447 of the rectifier circuit 444. The third DC power or the second DC power is received through the second connection terminal 442 of the driving circuit 44, and then the third DC power or the second DC power is converted into output power, and the output power is output at the output terminal 449.

In addition, the first DC / AC conversion circuit 45 receives the third DC power through the output terminal 447 of the rectifier circuit 444 or receives the second DC power through the switching element 46. The first DC / AC conversion circuit 45 is configured to convert the third DC power The straight AC drive element integrated L42 capable of converting the second DC power into a third AC power to output to the load L4.

In some embodiments, the uninterruptible power operation device 4 further includes a power supply 47. The power supply 47 includes an input terminal 471 and an output terminal 472. The input terminal 471 of the power supply 47 and the second connection terminal 442 of the driving circuit 44. And the second terminal 462 of the switching element 46 is electrically connected, and the output terminal 472 of the power supply 47 is electrically connected to the DC drive element group L44 of the load L4 straight AC drive element integration L42. When the AC power source P4 is normally powered, the input terminal 471 of the power supply 47 receives the third DC power output from the rectifier circuit 444 and converts it to the fourth DC power to output the fourth DC power through the output terminal 472 of the power supply 47. . When the AC power supply P4 is interrupted or abnormal, the input terminal 472 of the power supply 47 receives the second DC power output from the output terminal 432 of the DC / DC conversion circuit 43 through the second terminal 462 of the switching element 46 and converts it into fourth DC power. To output the fourth DC power through the output terminal 472 of the power supply 47.

In some embodiments, since the first DC power of the charge / discharge battery 41 of the uninterruptible operation device 4 in the present case is converted and boosted by the DC / DC conversion circuit 43 before being transmitted to the driving circuit 44, the battery is charged and discharged. 41 can use lower voltage batteries, such as lead-acid batteries.

Of course, the charging circuit 42 is not limited to be electrically connected to the AC power source P4 as shown in FIG. 5. In some embodiments, as shown in FIG. 6, the charging circuit 42 may be changed to the second connection terminal of the driving circuit 44. 442 is electrically connected, and when the AC power source P4 is normally powered, the driving circuit 44 can further transmit the first AC power to the charging circuit 42 through the second connection terminal 442. The input terminal of the charging circuit 42 is electrically connected between the second connection terminal 442 of the driving circuit 44 and the second terminal 462 of the switching element 46. Similar to the foregoing, when the AC power P4 is normally supplied, The voltage of the connection terminal 442 corresponds to the voltage of the first connection terminal 441 of the driving circuit 44. Therefore, the voltage of the second terminal 462 of the switching element 46 electrically connected to the second connection terminal 442 of the driving circuit 44 is greater than that of the switching element 46. The voltage of the first terminal 461, so the switching element 46 is in the off state; and when the AC power P4 is interrupted or abnormal, the voltage of the second terminal 462 of the switching element 46 electrically connected to the second connection terminal 442 of the driving circuit 44 is less than The voltage of the first terminal 461 of the switching element 46 makes the switching element 46 in a conducting state, and the rest of the system operation modes are not described again.

In addition, most of the circuit structure and operation of the uninterruptible power operation device 4 in Figures 5 and 6 of this case are similar to the uninterrupted power operation device 3 in Figures 3 and 4 of this case. Therefore, Figures 5 and 6 of this case The advantages of the uninterruptible operation device 4 of FIG. 6 compared to the conventional uninterruptible operation device are also similar to the advantages of the uninterruptible operation device 3 of FIGS. 3 and 4 compared to the conventional uninterruptible operation device. , So I will not repeat them here.

To sum up, the non-stop operating device in this case is provided with a switching element between the DC / DC conversion circuit and the driving circuit, so that when the AC power is interrupted or abnormal, the switching element uses the voltage of the first terminal and the second terminal. The difference enables the switching element to switch between on and off, so the switching element can quickly transfer the second DC power to the drive circuit immediately, so the drive circuit of the uninterruptible operation device in this case can actually be used when the AC power is interrupted or abnormal. It immediately receives the second DC power from the DC / DC conversion circuit and continuously drives the motor device to ensure safety. In addition, compared with the charge and discharge battery of the conventional uninterruptible operation device, when the power is supplied, the backup power of the charge and discharge battery will generate three levels of converted power loss. Since the uninterruptible operation device in this case only passes the DC / DC conversion circuit The drive circuit can perform two-stage conversion to supply power to the load. Therefore, the electric energy conversion efficiency of the first DC electric energy of the charge and discharge battery of the uninterruptible operation device in this case is relatively high. Furthermore, since the first DC power of the charge / discharge battery of the uninterruptible operation device in this case is boosted by the DC / DC conversion circuit before being transmitted to the driving circuit, the DC / DC conversion circuit transmits the power to the driving circuit. It can be enough to start the driving circuit operation, so the continuous power running device in this case not only does not need to set an additional EPS port, but also can choose a thinner wire diameter because the current flowing through the wire between the DC / DC conversion circuit and the driving circuit is small. Wire, so the uninterrupted operation device in this case can reduce production costs.

1, 2, 3, 4‧‧‧ uninterrupted operation device

L1, L2, L3, L4‧‧‧ load

L11, L21, L31, L41‧‧‧ Motor units

L32, L42‧‧‧Straight AC drive element integration

L33, L43‧‧‧AC drive element group

L34, L44‧‧‧‧DC drive element group

P1, P2, P3, P4‧‧‧ AC power

11, 21, 32, 42‧‧‧Charging circuits

12, 22, 31, 41‧‧‧ charge and discharge batteries

13, 23, 33, 43‧‧‧ DC / DC conversion circuit

331, 431‧‧‧ Input

332, 432‧‧‧ output

14, 24‧‧‧ DC / AC conversion circuit

34, 45‧‧‧first DC / AC conversion circuit

341, 451‧‧‧ Input

342, 452‧‧‧ output

251‧‧‧first switching element

252‧‧‧Second switching element

15, 253, 37‧‧‧Three-port switching elements

16, 26, 35, 44‧‧‧ drive circuit

351, 441‧‧‧ the first connection end

352、442‧‧‧Second connection terminal

353, 443‧‧‧ output

354, 444‧‧‧ rectifier circuit

356, 446‧‧‧ Input

357, 447‧‧‧ output

355, 445‧‧‧second DC / AC conversion circuit

358, 448‧‧‧ Input

359, 449‧‧‧ output

36, 46‧‧‧ switching element

361, 461‧‧‧ first end

362, 462‧‧‧ second end

38‧‧‧Output Module

381‧‧‧AC output

382, 47‧‧‧ Power Supply

383, 471‧‧‧ Input

384, 472‧‧‧ output

471‧‧‧input

472‧‧‧output

EPS‧‧‧EPS port

Figure 1 is a schematic diagram of the circuit structure of the first conventional uninterruptible operation device.

Fig. 2 is a schematic diagram of the circuit structure of the second conventional uninterruptible operation device.

FIG. 3 is a schematic diagram of the circuit structure of the uninterruptible power running device of the first preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a circuit structure of a non-stop operating device according to a second preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a circuit structure of a non-stop operating device according to a third preferred embodiment of the present invention.

FIG. 6 is a schematic diagram of a circuit structure of a non-stop operating device according to a fourth preferred embodiment of the present invention.

Claims (21)

A non-stop operating device is electrically connected between an AC power source and a load, and receives a first AC power source provided by the AC power source, and includes: An energy storage element for providing a first DC power; A DC / DC conversion circuit, an input end of the DC / DC conversion circuit is electrically connected to the energy storage element, and is used for converting the first DC power into a second DC power when the AC power is interrupted or abnormal; A driving circuit, a first connection terminal of the driving circuit is electrically connected to the AC power source, an output terminal of the driving circuit is electrically connected to the load, and a voltage of a second connection terminal of the driving circuit is connected to the The voltage of the first connection terminal of the driving circuit corresponds; and A switching element, a first end of the switching element is electrically connected to an output end of the DC / DC conversion circuit, and a second end of the switching element is electrically connected to the second connection end of the driving circuit; Wherein, when the AC power is normally supplied, the switching element is in an off state, the first connection end of the driving circuit receives the first AC power, and the driving circuit converts the first AC power into an output power to drive the Load; and Wherein, when the AC power is interrupted or abnormal, the switching element is in an on state, the second connection end of the driving circuit receives the second DC power through the second end of the switching element, and the driving circuit converts the second DC power is the output power to drive the load. The uninterruptible operation device according to claim 1, further comprising a charging circuit for receiving and converting the first AC power to charge the energy storage element when the AC power is normally supplied, wherein the charging is performed. The circuit is electrically connected between the AC power source and the energy storage element. The non-stop operating device according to claim 1, wherein the driving circuit includes a rectifier circuit, and an input terminal of the rectifier circuit is electrically connected to the first connection terminal of the drive circuit. An AC power is rectified into a third DC power. The non-stop operating device according to claim 3, further comprising a first DC / AC conversion circuit, an input terminal of the first DC / AC conversion circuit and an output terminal of the DC / DC conversion circuit are electrically connected. Connected for converting the second DC power into a second AC power. The non-stop operating device according to claim 4, wherein the driving circuit further includes a second DC / AC conversion circuit, and one input terminal of the second DC / AC conversion circuit is electrically connected to an output terminal of the rectifier circuit. And the second connection end of the driving circuit, one output end of the second DC / AC conversion circuit is electrically connected to the output end of the driving circuit, and the second DC / AC conversion circuit is used for the third DC power Or the second DC power is converted into the output power. The uninterruptible operation device according to claim 4, further comprising a three-port switching element for integrating the AC power source to an AC drive element integrated with the load, or the first DC / AC conversion circuit A path is switched between the output terminal and the DC-AC drive element integration of the load. The uninterruptible electrical operation device according to claim 6, further comprising an output module, an AC output terminal of the output module is electrically connected between the three-port switching element and the direct AC driving element integration of the load, The AC output terminal integrates the first AC power or the second AC power received by the three-port switching element to the direct AC driving element of the load. The uninterruptible operation device according to claim 7, wherein the output module further includes a power supply, and the power supply is electrically connected between the three-port switching element and the DC AC drive element integration of the load, The power supply receives the first AC power or the second AC power through the three-port switching element, and converts the first AC power or the second AC power into a fourth DC power. The non-stop operating device according to claim 1, wherein the energy storage element is a lead-acid battery. The uninterruptible operation device according to claim 1, further comprising a charging circuit for receiving and converting the first AC power to charge the energy storage element when the AC power is normally supplied, wherein the charging is performed. The circuit is electrically connected between the energy storage element and the second connection terminal of the driving circuit. The uninterruptible operation device according to claim 1, further comprising a charging circuit for receiving and converting the first AC power to charge the energy storage element when the AC power is normally supplied, wherein the charging is performed. An input terminal of the circuit is electrically connected between the second connection terminal of the driving circuit and the second terminal of the switching element, and an output terminal of the charging circuit is electrically connected to the energy storage element. The uninterruptible operation device according to claim 1, wherein the switching element is a diode, a MOSFET, a relay, or other switchable circuit elements. A non-stop operating device is electrically connected between an AC power source and a load, and receives a first AC power source provided by the AC power source, and includes: An energy storage element for providing a first DC power; A DC / DC conversion circuit, an input end of the DC / DC conversion circuit is electrically connected to the energy storage element, and is used for converting the first DC power into a second DC power when the AC power is interrupted or abnormal; A driving circuit includes a rectifier circuit, a first connection terminal of the driving circuit is electrically connected to the AC power source, an output terminal of the driving circuit is electrically connected to the load, and a voltage of a second connection terminal of the driving circuit Corresponds to the voltage of the first connection terminal of the driving circuit, one input terminal of the rectifier circuit is electrically connected to the first connection terminal of the drive circuit, and one output terminal of the rectification circuit is electrically connected to the drive circuit. The second connection end, and rectifying the first AC power into a third DC power; and A switching element, a first end of the switching element is electrically connected to an output end of the DC / DC conversion circuit, and a second end of the switching element is electrically connected to the second connection end of the driving circuit; Wherein, when the AC power is normally supplied, the switching element is in an off state, the first connection end of the driving circuit receives the first AC power, and the driving circuit converts the first AC power into an output power to drive the Load; and Wherein, when the AC power is interrupted or abnormal, the switching element is in an on state, the second connection end of the driving circuit receives the second DC power through the second end of the switching element, and the driving circuit converts the second DC power is the output power to drive the load. The uninterruptible power operation device according to claim 13, further comprising a charging circuit for receiving and converting the first AC power to charge the energy storage element when the AC power is normally supplied, wherein the charging is performed. The circuit is electrically connected between the AC power source and the energy storage element. The non-stop operating device according to claim 13, wherein the driving circuit further includes a first DC / AC conversion circuit and a second DC / AC conversion circuit, one of the inputs of the first DC / AC conversion circuit. Terminal is electrically connected to the second connection terminal of the driving circuit, an output terminal of the first DC / AC conversion circuit is integrated with the load's always AC driving element, and one input of the second DC / AC conversion circuit The terminal is electrically connected to the output terminal of the rectifier circuit and the second terminal of the switching element. One output terminal of the second DC / AC conversion circuit is electrically connected to the load. The second DC / AC conversion circuit is used for The third DC power or the second DC power is converted into the output power. When the AC power is normally supplied, the first DC / AC conversion circuit receives the third DC power from the second connection end of the driving circuit. DC power; wherein, when the AC power is interrupted or abnormal, the first DC / AC conversion circuit receives the second DC power from the output end of the DC / DC conversion circuit. The non-stop operating device according to claim 15, wherein the first DC / AC conversion circuit is configured to convert the third DC power or the second DC power into a third AC power to output to the load The direct AC drive components are integrated. The non-stop operating device according to claim 15, further comprising a power supply, an input end of the power supply is electrically connected to the second connection end of the driving circuit and the second end of the switching element, An output end of the power supply is electrically connected with the direct-current driving element of the load to receive the third DC power or the second DC power and convert it into a fourth DC power, and output the fourth DC power. The DC-AC drive element that can reach the load is integrated. The non-stop operating device according to claim 13, wherein the energy storage element is a lead-acid battery. The uninterruptible power operation device according to claim 13, further comprising a charging circuit for receiving and converting the first AC power to charge the energy storage element when the AC power is normally supplied, wherein the charging is performed. The circuit is electrically connected between the energy storage element and the second connection terminal of the driving circuit. The uninterruptible power operation device according to claim 13, further comprising a charging circuit for receiving and converting the first AC power to charge the energy storage element when the AC power is normally supplied, wherein the charging is performed. An input terminal of the circuit is electrically connected between the second connection terminal of the driving circuit and the second terminal of the switching element, and an output terminal of the charging circuit is electrically connected to the energy storage element. The non-stop operating device according to claim 13, wherein the switching element is a diode, a MOSFET, a relay, or other switchable circuit elements.