TWI320256B - System for controlling constant current power output and power supply circuit module - Google Patents

Description

1320256 IX. Description of the Invention: [Technical Field] The present invention relates to a power output control system, and more particularly to a constant current power output control system. [Previous technical materials] With the development and evolution of the current situation, electronic and electrical devices, equipment and systems have long been unknowingly played a very important role in life. In order for these electronic and electrical equipment to function properly, a stable power supply is the most necessary and necessary condition. However, for a particular electronic appliance, device or system, under certain circumstances, there is no allowable interruption or instability of the power supply. Especially for systems that are undergoing aging testing, online testing or immediate control, as long as some micro-electric power supply instability occurs, it will have a great negative impact, let alone the consequences of power supply disruption. Therefore, at the practical application level, most of them use a power supply circuit module that can output a constant current to supply the power required for the above-mentioned aging test, online test or immediate control system, and at the same time, in order to supply sufficient constant current power, these The power supply circuit module usually has several branch power supply circuits connected in parallel. In addition, for the above-mentioned systems undergoing burn-in testing, in-line testing, or immediate control, there are many power supply circuits that must be routinely or temporarily overhauled because of long-term load conditions. When overhauling these power supply circuits, it is inevitable that a certain number of power supply circuits must be cut off, but this does not affect the stability of the entire power supply. This is a problem that many practitioners are worried about. . In view of the above, we will cite two well-known embodiments for specific explanation. Please refer to the first figure, which shows a circuit diagram of a conventional embodiment of the circuit system 5 1320256. As shown, a power supply circuit module! Electrically, in a power supply unit 2 and a load 3 (which may be the above-mentioned system for aging test, online test or instant control), the circuit module 1 includes six branch power supply circuits u, 12, 13, The 15 and 16' six-branch power supply circuits 丨丨, 12, 13, 14, and 16 are connected in parallel with each other, and are electrically connected to the power supply unit ^ and the load 3, respectively. Although the power supply unit 2 sends out a predetermined power, six

The roads 1 , 12 , 13 , 14 , 15 and 16 are correspondingly outputting the power of the eight branch currents II, 12, 13, 14, 15 and 16. The power, 、, 12, 13, 14, 15 and 16 of the six branch currents are further integrated into the load 3 by integrating the output power of a certain current IT. It is assumed that the predetermined power supplied by the power supply unit 2 is a constant voltage of 1 volt. The impedance of the six branch power supply circuits U, 12, 13, 14, 15 and 16 is 5 ohms, and the six branch currents 11, ο , 13, 14, 15 and 16 are all 20 amps, and the set current constant is 120 amps.

Please continue to refer to the second figure, which shows the power supply condition when one of the power supply circuits interrupts the output power in the first figure. As shown in the figure 2, in the power supply process of the power supply unit 2, once one of the branch power supply circuits fails (as in the branch power supply circuit 15 in the figure), only the other five outer branch power supply circuits 11, 12, 13, 14 and 16 can maintain normal operation and respectively output power of five branch currents η, 12, 13, 14, and 16, and are integrated into the output power of another constant current ΙΤ'. If the above assumptions are still inherited, the accumulated current IT' will only be 1 ampere, which is obviously 20 amps less than the constant current IT, and thus seriously affects the positive operation of the load 3. 1320256 In order to solve the above problem, another embodiment will be further disclosed below. Referring to the third figure, there is shown a block diagram of a circuit system of another conventional embodiment. As shown, another power supply circuit 1a is also electrically connected to the power supply unit '2 and the load 3, respectively, and the circuit module 1a includes six branch power supply circuits 八=13Λ, 14a, 15& Together with 16a, it further includes a redundant blade power supply circuit 17a and a current detecting unit 18a. The two branch power supply circuits 11a, 12a, 13a, 14a, 15a are connected in parallel with each other and electrically connected to the power supply unit 2 and the load 3, respectively. A switching switch P is further provided between the redundant branch supply path 17a and the power supply unit 2, and the switch P is preset to the open position to cut off the redundancy, and the circuit 17a is in communication with the power supply unit 2. The current price measurement early 7C 18a is electrically connected to the six branch power supply circuits 11&, =a, 13a, 14a, 15a and 16a and the redundant branch power supply circuit, respectively, and the processing unit 19a is electrically connected to the current detection respectively. The early το 18a is connected to the power supply unit 2. When the power supply unit 2 sends out a predetermined power, the six branch circuits 11a, 12a, 13a, 14a, 15a, and 16a respectively output powers of six branch currents 1 12, 13, 14, 15 I6 The powers of the six branch currents II, 12, 13, Ι4, η and 16 are integrated into the output current of the constant current IT and supplied to the negative 3 while the current detecting unit 18a detects six branches. Currents 11, 12 2, 13, 15, 15 and 16, and send a detection signal S1 to the processing soap 19a. When the power of the branch current 15 is outputted in one of the six branch power supply circuits 11a, 12a, 13a, 14a, 15a, and 16a (assumed to be the branch power supply circuit 15a), the processing unit 19a detects the signal S1 according to 1320256. Sending a control signal S2 to the switch P, switching the switch P to the closed circuit position, turning on the redundant branch power supply circuit 17a and the power supply unit 2, and causing the redundant branch power supply circuit 17a to output a power of the redundant branch current 17. And the power of the redundant branch current 17 and the power of the other five branch currents II, 12, 13, 14, and 16 are collected into the output power maintained at the constant current IT and supplied to the load 3. In line with the above assumptions, and the impedances of the six branch power supply circuits 11a, 12a, 13a, 14a, 15a and 16a and the redundant branch power supply circuit 17a are both 5 ohms, the power output at a current of 120 amps can be maintained. However, it is necessary to additionally add a redundant branch power supply circuit 17a and a changeover switch P. SUMMARY OF THE INVENTION The technical problems and objects to be solved by the present invention: As described above, in the prior art, there are two main problems respectively. When one of the branch power supply circuits fails, the problem of constant current output cannot be maintained. The second system must additionally add at least one redundant branch power supply circuit and at least one switch. Therefore, the main object of the present invention is to provide a constant current output control system or a power supply circuit module, which are respectively electrically connected to a power supply unit capable of adjusting output power to be issued in a receiving power supply unit. After the predetermined power is supplied, the output power of the current is supplied to the at least one load, and when the fixed current output control system or a part of the branch power supply circuit in the power supply circuit module is faulty or must be cut off for maintenance, a corresponding control signal is sent to generate power. The output power of the supply unit is upgraded from the predetermined power to a redundant power to maintain the output power at the constant current.

8 1320256 Technical Solution of the Invention The present invention provides a constant current output control system or a power supply circuit module for solving the problems of the prior art. The power supply circuit module receives a predetermined power generated by a power supply unit and supplies a certain current output power to at least one load. The power supply circuit module includes a plurality of branch power supply circuits, a current detection unit, and a power supply processing unit. . The plurality of branch power supply circuits are connected in parallel with each other and electrically connected to the power supply unit and the load, thereby receiving predetermined power to output power of the plurality of branch currents, and the power of each branch current is collected into a constant current output power and supplied to the load. . The current detecting unit is electrically connected to each branch power supply circuit to detect each branch current. The power processing unit is electrically connected to the current detecting unit and the power supply unit, respectively, to generate a control signal according to the detected branch current. When at least one of the branch power supply circuits interrupts the power outputting the branch current, the control signal controls the power supply unit to transmit a redundant power higher than the predetermined power, thereby maintaining the output power at a constant current. The constant current output control system includes a master integrated power supply module and at least one slave integrated power supply module to provide greater output power to at least one load. The main control integrated power supply module comprises a main control processing unit and a plurality of the above-mentioned power supply circuit modules, and the subordinate integrated power supply module comprises a slave processing unit and a plurality of the above power supply circuit modules. The slave processing unit of the slave integrated power supply module integrates the control signals sent by the power supply circuit module of the slave integrated power supply module to issue a slave integrated control signal to the power supply circuit of the master control processing unit and the slave integrated power supply module. Module. 9 1320256 The main control processing unit of the main control integrated power supply module is to integrate the control signal from the power supply circuit module of the main control integrated power supply module and the subordinate integrated control signal sent by the slave processing unit of the subordinate integrated power supply module. And a master control integrated control signal is sent to the power supply unit, the slave processing unit and the power supply circuit module of the main control integrated power supply module. The present invention compares the effects of the prior art: From the above, it can be seen that the constant current output control system or the power supply circuit module provided by the present invention can be faulty in some branch power supply circuits or must be cut off and overhauled compared with the first prior art. At the same time, the output power can still be maintained at a constant current. Meanwhile, compared with the second conventional technology, the constant current output control system or the power supply circuit module provided by the present invention can achieve the above purpose without separately adding a redundant branch power supply circuit and a corresponding switch. The output power of the higher current can be further provided by configuring the main control integrated power supply module and the plurality of subordinate integrated power supply modules. The specific embodiments of the present invention will be further described by the following embodiments and drawings. [Embodiment] The constant current output control system and the power supply circuit module provided by the present invention can be widely applied to various electronic and electrical devices, devices and systems, in particular, systems for performing aging test, online test or instant control, and combinations thereof. The implementation is even more numerous, so it will not be repeated here, and only the preferred embodiment will be specifically described. 10 1320256 Please refer to the fourth to sixth figures. The fourth figure shows a block diagram of the circuit system of the first embodiment of the present invention, and the fifth figure shows the power supply status when one of the branch power supply circuits interrupts the output power. The sixth figure shows a schematic diagram in which the power supply processing unit controls the power supply unit to issue redundant power to maintain a constant current output. As shown in the figure, a power supply circuit module 4 is electrically connected to a power supply unit 2a that can adjust output power and the load 3, and the power supply circuit module 4 includes six branch power supply circuits 41, 42, 43 44, 45 and 46, and further comprising a current detecting unit 47 and a power processing unit 48 ° six branch power supply circuits 41, 42, 43, 44, 45 and 46 are connected in parallel with each other and electrically connected to the power Supply unit 2a and load 3. The current detecting unit 47 is electrically connected to the six branch power supply circuits 41, 42, 43, 44, 45 and 46, respectively, and the power processing unit 48 is electrically connected to the current detecting unit 47 and the power supply unit 2a, respectively. . When the power supply unit 2a sends out a predetermined power, the six branch power supply circuits 41, 42, 43, 44, 45 and 46 correspondingly output six of the above-mentioned branch currents II, 12, 13, 14, 15 and 16 electric power. The powers II, 12, 13, 14, 15, and 16 of the six branch currents are also collected in close proximity to the output power of the constant current IT described above and supplied to the load 3. At the same time, the current detecting unit 47 detects the six branch currents II, 12, 13, 14, 15 and 16 and transmits a detection signal S1' to the power supply processing unit 48. When the branch power supply circuit 45 is in trouble or routinely and temporarily repaired, the branch power supply circuit 45 is cut off in a hot-swap manner to interrupt the power of the output branch current 15, and thus only five other branches remain. The power supply circuits 41, 42, 43, 44 and 46 can maintain normal operation and respectively output powers of five branch currents II, 12, 13, 11 1320256 14 and 16 and are integrated into output power of another constant current IT". Up to the load 3 (as shown in the fifth figure). However, unlike the prior art, in this embodiment, the processing unit 48 sends a control signal S2' to the power according to the change of the detection signal S1'. The supply unit 2a, by which the control power supply unit 2a sends out a redundant power higher than the predetermined power, so that the five branch power supply circuits 41, 42, 43, 44 and 46 respectively output five higher branch currents II, The power of the branch currents 12, 12', 13', 14' and 16' of 12, 13, 14 and 16 is converged into the output power of the constant current IT, so that the output power is maintained at the above-mentioned constant current IT (such as six When the branch power supply circuit 45 described above resumes from the interruption to restore the power of the branch current 15, the control signal S2' controls the power supply unit 2a to transmit the predetermined power, so that the output power is continuously maintained. At the constant current IT (as shown in the fourth figure). In accordance with the assumption of the prior art, if the predetermined power supplied by the power supply unit 2a is a constant voltage of 100 volts, the six branch power supply circuits 41, 42, 43, 44 The impedances of 45 and 46 are both 5 ohms, and the six branch currents Π, 12, 13, 14, 15 and 16 are both 20 amps, and the collected constant current IT is 120 amps. When the branch power supply circuit 45 interrupts the output When the power of the branch current 15 is branched, the collected constant current IT" has only 100 amps left. At this time, the control signal S2' controls the power supply unit 2a to adjust to transmit a redundant power higher than the predetermined power, and then five branches. The branch currents output by the power supply circuits 41, 42, 43, 44, and 46 are converted to 24 amps, and are again collected into an output power of 120 amps of current. When the branch power supply circuit 45 described above resumes from the interruption and resumes outputting the branch current of 20 amps, the control signal S2' controls the power supply unit 2a to resume transmitting the predetermined power, so that the output power 12 1320256 is continuously maintained at the constant current 120. ampere. Please refer to the seventh diagram, which is a block diagram showing the circuit of the second embodiment of the present invention. As shown in the figure, a certain current output control system 100 is electrically connected to the power supply unit 2a and the four loads 3, 3a, 3b, and 3c that are respectively adjustable in output power, and includes a main control integrated power supply module 200 and a The slave power module 200a is integrated. The main control integrated power supply module 200 includes a power supply circuit module 4 as disclosed in the above embodiment, a power supply circuit module 4 a similar to or similar to the power supply circuit module 4, and a main control processing unit 5. The power supply circuit modules 4 and 4a supply the output currents of the constant currents IT and IT1 to the loads 3 and 3a, respectively. The main control processing unit 5 is electrically connected to the power supply unit 2a and the power supply circuit modules 4 and 4a, respectively, and the control signal S2' sent by the power supply circuit modules 4 and 4a is integrated into an integrated signal S3 and sent to the main control processing. Unit 5 performs the processing. The slave integrated power supply module 200a includes two power supply circuit modules 4b and 4c identical to or similar to the power supply circuit module 4, and a slave processing unit 5a. The power supply circuit modules 4b and 4c supply the output powers of the constant currents IT2 and IT3 to the loads 3b and 3c, respectively. The slave processing unit 5a is electrically connected to the power supply unit 2a and the power supply circuit modules 4b and 4c, respectively. The control signals S2' sent by the power supply circuit modules 4 and 4a are integrated into an integrated signal S4 and sent to the slave processing unit 5a. Process it. The slave processing unit 5a transmits a slave integrated control signal S 5 to the master processing unit 5 and the power supply circuit modules 4b and 4c in accordance with the integrated signal S 4 to control the power supply circuit modules 4b and 4c. The main control processing unit 5 transmits a master integrated control signal S6 to the power supply unit 2a, the slave processing unit 5a, and the power supply circuit module 4 according to the integrated signal S3 and the slave integrated control signal S5.

13 4a, whereby the power supply unit 2a, the slave processing unit 5a, and the power supply circuit modules 4 and 4a are controlled. When the at least one branch power supply circuit of the power supply circuit module 4, 4a, 4b, and 4c in the master integrated power supply module 200 and the slave integrated power supply module 200a interrupts the power of the branch current, the master control integrated control signal S6 controls the power supply unit 2a to transmit another redundant power, so that the output power is maintained at the constant currents IT, IT1, IT2, and IT3, respectively. Meanwhile, if the above assumptions are continued, and the power supply unit 2a can generate a predetermined voltage of sufficient power, the constant current output control system 100 can output a constant current of 480 amps. It can be easily understood by those having ordinary knowledge in the technical field. At the practical application level, the above-mentioned master processing unit 5 and slave processing unit 5a can make the master-slave relationship between the two by appropriate switching circuits. Alternatively, the functions of the master processing unit 5 and the slave processing unit 5a can be interchanged by appropriate switching circuitry under appropriate system operating conditions. At the same time, the power supply circuit modules 4, 4a, 4b, and 4c can be implemented by the appropriate switching circuit under the appropriate system operating conditions without the need of the main control processing unit 5 and the slave processing unit 5a. As described in the example, the power output of the power supply unit 2a is directly fed back. As can be seen from the above-described embodiments of the present invention, the present invention has industrial use value. The above embodiments are merely illustrative of the preferred embodiments of the present invention, and other modifications and changes can be made by those skilled in the art. However, various modifications and changes made in accordance with the embodiments of the present invention are still within the scope of the invention and the scope of the invention. 1320256 [Simple description of the drawings] :: The system shows a block diagram of a circuit system of a conventional embodiment; a picture = two states, the branch power supply circuit interrupt output, the second picture shows another circuit structure of the embodiment Figure 4 is a block diagram showing the circuit system of the first embodiment of the present invention;

The fifth figure t shows the power supply condition when the power supply processing unit controls the power supply unit to send a small amount of power to maintain the constant current output; and the seventh figure A block diagram of a circuit of a second embodiment of the present invention is shown.

[Description of main component symbols] I, la II, 12, 13, 14, 15, 16 11a, 12a, 13a, 14a, 15a, 17a 18a 19a 2 ' 2a 3, 3a, 3b, 3c 100 200 Power supply circuit module branch Power supply circuit 16a branch power supply circuit redundant branch power supply circuit current detection unit processing unit power supply unit load constant current output control system main control integrated power supply module

15 1320256 200a Dependent integrated power supply module 4, 4 a, 4 b, 4c Power supply circuit module 41, 42 , 43 , 44 , 45 , 46 Branch power supply circuit 47 Current detection unit 48 Power supply processing unit 5 Main control processing unit 5a Slave processing unit P switches 11 , 12 , 13 , 14 , 15 , 16 branch currents 11 , 12 , 13 , 14 , 15 , 16 , branch current 17 redundant branch currents IT , IT , IT “ Constant current IT, IT1, IT2, IT3 Constant current SI ' sr Detection signal S2 ' S2? Control signal S3 > S4 Integrated signal S5 Slave integrated control signal S6 Master integrated control signal 16

Claims (1)

'Application patent scope: A power supply circuit module' receives a predetermined power generated by a power supply unit and supplies a certain current output power to at least one load. The power supply circuit module includes: a plurality of branch power supply circuits Parallel to each other, and electrically connected to the power supply unit and the load, whereby the predetermined power is mixed to generate power of a plurality of branch currents, and the power of each branch current is collected into the output current of the constant current and supplied to The current detecting unit is electrically connected to each branch power supply circuit to detect each branch current; and a power processing unit is electrically connected to the current detecting unit and the power supply unit respectively, thereby The branch current detected is a control signal; and when at least one of the branch power supply circuits interrupts outputting the power of the branch current, the control signal controls the power supply unit to send a higher than " The power of the power is 'by the power' to maintain the output power at the constant current. The power supply circuit module of claim 1, wherein the control signal controls the power supply unit to transmit the predetermined power when the branch power supply circuit recovers from the interruption to restore the power of the branch current. , 1320256 is used to keep the output power continuously at the constant current. 3. a constant current power output control system, comprising a master integrated power supply module, and the master integrated power supply module comprises: a plurality of power supply circuit modules as described in the patent application scope, and the plurality The power supply circuit module supplies the output power of at least a certain current to at least one load; the main control unit is connected to the power supply unit and the plurality of power supply circuit modules to integrate the power supply circuit modules. The control signal is issued, and the main control integrated control signal is issued; when the above-mentioned at least one branch power supply circuit interrupts the output of the power of the branch current, the main control integrated control signal controls the power supply unit to send another redundant The remaining power 'sends to maintain the output power at the constant current. "As in the constant current power output control system described in claim 3, in the basin, when the above-mentioned branch power supply circuit is switched from the interruption to restore the power of the branch current, the touch integration control steals the number control _ power The supply unit transmits the predetermined power so that the output power is continuously maintained at the constant current. For example, in the fixed current electric power wheel system according to the third aspect of the patent application, in the basin, the main control integrated control signal is sent to each power supply circuit for rectification to control each power supply circuit module.曰1320256=Constant current power output control as described in the scope of patent application (4), when the distracting/including the current of the above-mentioned subordinate integrated power supply module is included, the main control = two:: the power supply unit The predetermined power is sent out so that the SI is continuously maintained at the constant current. 9. The constant current power wheel control system according to claim 6, wherein the subordinate integration (four) Wei system is additionally sent to the power supply processing unit in each power supply circuit module included in the integrated power supply module. , Dreams and systems, ... are the power supply circuit modules included in the integrated power supply module. 20