TW201508461A - Power supply system - Google Patents

Abstract

A power supply system is utilized for providing an operating power of an operation module in a computer system. The power supply system includes a battery module for generating a battery state signal and determining whether to output the operating power according to a power start signal, a start control circuit for generating the power start signal according to the battery state signal and the operating power and outputting the power start signal to the battery module, a state detection module for utilizing the operating power outputted by the battery module to detect an operating state of the computer system and generating an operating state signal, a switch control module for outputting the operating power outputted by the battery module to the operation module according to the operating state signal.

Description

Power supply system

The invention relates to a power supply system, in particular to a power supply system for a computer system, which can start the battery module output power of the computer system without using the power of the extra battery.

In recent years, computers have become the most important platform for the masses to process digital information. In order to meet the needs of consumers, more diverse portable computers have emerged, such as notebook computers and tablet computers. Since the portable computer may also need to operate without an external power supply, the power supply system of the portable computer includes a battery module to provide power. However, when the portable computer is turned off, the battery module will stop outputting power correspondingly, and in order to enable the real-time clock (RTC) circuit in the portable computer to continue to operate, the portable computer There is also another battery, commonly referred to as an RTC battery, which is used to provide the power required to operate the instant clock circuit so that the system time of the portable computer can be continuously timed and maintained on time. Further, when the portable computer is turned off or turned on by the user to wake up or start up, the conventional power supply system first supplies power to the startup circuit through the RTC battery, and causes the startup circuit to generate a control signal. Start the battery module output power.

However, when the RTC battery is dead or damaged, the startup circuit will have no power to operate and cannot generate a control signal to activate the battery module output power, thereby causing the portable computer to have the power of the battery module, but still cannot operate. It is inconvenient. In view of this, the prior art has been improved.

Accordingly, the present invention provides a power supply system that can pass no extra battery power Source to start the battery module output power of the computer system.

The invention discloses a power supply system for providing a working power supply for operating a working module in a computer system, the power supply system comprising a battery module for generating a battery status signal and controlling according to a power supply a signal to determine whether to output the operating power supply; a start control circuit coupled to the battery module for generating the power control signal according to the battery status signal or the operating power source, and outputting the power control signal to the battery module; The detection module is coupled to the battery module for detecting the operating state of the computer system by using the operating power output by the battery module, and generating an operating status signal; and a switch control circuit. The operating module and the operating module are configured to output the operating power outputted by the battery module to the operating module according to the operating status signal.

10, 20‧‧‧ computer system

100, 200‧‧‧ power supply system

110, 210‧‧‧Start control circuit

112, 212‧‧‧ battery module

114, 214‧‧‧ switch control circuit

116, 216‧‧‧ State Detection Module

120, 220‧‧‧ voltage regulator module

122, 222‧‧‧ latch circuit module

124, 224‧‧‧Detection circuit module

130, 230‧‧‧ operating modules

BT‧‧‧Operating power supply

PWR‧‧‧ stable power supply

DET‧‧‧ detection signal

OP‧‧‧Operation status signal

STA‧‧‧Battery status signal

CON‧‧‧Power Control Signal

CON_B‧‧‧Alternate Control Signal

BT_B‧‧‧Backup power supply

240‧‧‧Alternative start-up circuit

242‧‧‧Backup battery

D1~D4‧‧‧ Diode

R1~R4, Ri‧‧‧ resistance

C1‧‧‧ capacitor

TR1~TR6‧‧‧O crystal

VR‧‧‧Voltage Regulator

NT1, NT2‧‧‧ reverse gate

SP, PP‧‧‧ pin

Vi‧‧‧High potential

FIG. 1 is a schematic diagram of a computer system according to an embodiment of the present invention.

2 is a schematic diagram of another computer system according to an embodiment of the present invention.

Figure 3 is a schematic diagram of an embodiment of the power supply system of Figure 2.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a computer system 10 according to an embodiment of the present invention. As shown in FIG. 1, the computer system 10 is used in a computer device such as a computer, a notebook computer or a tablet computer and includes a power supply system 100 and an operation module 130. The computer system 10 provides the power required for the operation of the operation module 130 by the power supply system 100, so that the operation module 130 can perform operations such as surfing the Internet, processing documents, or playing multimedia. The power supply system 100 includes a startup control circuit 110, a battery module 112, a switch control circuit 114, and a state detection module 116.

The battery module 112 is a circuit module having a battery such as a lithium ion battery, a lithium polymer battery or a nickel hydrogen battery. The outer shape of the battery module 112 is generally cylindrical or square, and can be installed in a computer device to provide a computer system 10 . The power required to operate. In the power supply system 100, the battery module 112 is coupled to the startup control circuit 110, the switch control circuit 114, and the state detection module 116, and the battery. The module 112 is activated by the startup control circuit 110 to output the operating power supply BT to the switch control circuit 114 and the state detection module 116. After the startup control circuit 110 activates the operation of the battery module 112, the battery module 112 first generates the battery status signal STA to the startup control circuit 110, and then activates the control circuit 110 to output the battery status signal STA and the operating power supply according to the battery module 112. The BT generates the power control signal CON and outputs it to the battery module 112 to control the battery module 112 to start and output the operating power BT.

In detail, when the battery module 112 is not yet installed in the computer device, the battery module 112 operates in an initial state without outputting the operating power source BT (ie, the operating power source BT is low) and generates a first state (eg, high). Battery state signal STA of potential). After the battery module 112 is installed in the computer device and coupled to the startup control circuit 110, the startup control circuit 110 receives the battery state signal STA in the first state (ie, high potential), and generates a power control signal CON that is displayed as being activated. Output to the battery module 112. After the battery module 112 receives the power control signal CON displayed as being activated, the battery module 112 switches to a battery that operates in an activated state and outputs a high-potential operating power source BT and generates a second state (eg, a low potential). Status signal STA. Finally, under the high-potential operating power supply BT, the startup control circuit 110 continuously outputs the power control signal CON displayed as activated, so that the battery module 112 continuously outputs the operating power supply BT. When the battery module 112 is powered off and the low-level operating power supply BT is output, the startup control circuit 110 receives the low-potential operating power supply BT and the battery state signal STA of the second state (eg, low potential), and the display is displayed as The non-activated power control signal CON is output to the battery module 112 to control the battery module 112 to operate in an initial state. Thereby, through the operation of the startup control circuit 110, the battery module 112 can use its own power source to start and output the operating power source BT.

In addition, the state detection module 116 is coupled to the battery module 112 and the switch control circuit 114, and the switch control circuit 114 is coupled to the battery module 112, the state detection module 116, and the operation module 130. After the battery module 112 outputs the operating power source BT, the state detecting module 116 uses the operating power source BT outputted by the battery module 112 to perform detection of the operating state of the computer system 10, such as operating voltage, operating current, or operating temperature. Generate operational status signal OP to show the operation of the computer system The state is normal or abnormal. The state detecting module 116 outputs the operating state signal OP to the switch control circuit 114 to control whether the switch control circuit 114 outputs the operating power source BT outputted by the battery module 112 to the operating module 130. Specifically, when the state detecting module 116 detects that the operating voltage, operating current, or operating temperature of the computer system 10 does not exceed the set value corresponding to the setting, the operating state of the computer system 10 is normal, and the state is detected. The test module 116 generates an operational status signal OP that is displayed in a normal state and outputs the signal to the switch control circuit 114 to control the switch control circuit 114 to output the operating power supply BT outputted by the battery module 112 to the operation module 130. When the state detecting module 116 detects that the operating voltage, operating current or operating temperature of the computer system 10 exceeds the set corresponding value, the operating state of the computer system 10 is abnormal, and the state detecting module 116 The operating state signal OP displayed as an abnormal state is generated and output to the switch control circuit 114 to control the switch control circuit 114 not to output the operating power source BT outputted by the battery module 112 to the operation module 130.

In detail, the state detection module 116 includes a voltage regulator module 120, a latch circuit module 122, and a detection circuit module 124. The voltage regulator module 120 is coupled to the battery module 112, the latch circuit module 122, and the detection circuit module 124. The circuit module can be a low dropout regulator (Low Dropout Regulator) circuit module or have a conversion type. The voltage regulator module 120 receives the operating power supply BT outputted by the battery module and converts it into a stable power supply PWR for output to the latch circuit module 122 and the detection circuit module. Group 124 is used. The detecting circuit module 124 uses the stable power supply PWR outputted by the voltage regulator module 120 to detect the operating voltage, operating current or operating temperature of the computer system 10, and generates a detection signal DET to display the operating state of the computer system 10 as Normal or abnormal state. The latch circuit module 122 is coupled to the voltage regulator module 120, the detection circuit module 124 and the switch control circuit 114, and uses the stable power supply PWR output by the voltage regulator module 120 to latch the detection circuit module 124. The detected detection signal DET is outputted and the operational status signal OP is output to the switch control circuit 114.

The switch control circuit 114 determines whether to output the operating power BT outputted by the battery module 112 to the operation module 130 according to the received operational status signal OP. When the switch control circuit 114 Upon receiving the operational status signal OP displayed in the normal state, the switch control circuit 114 outputs the operational power supply BT outputted by the battery module 112 to the operational module 130 to provide the power required for the operational module 130 to perform operations. When the switch control circuit 114 receives the operating state signal OP displayed as an abnormal state, the switch control circuit 114 does not output the operating power source BT outputted by the battery module 112 to the operation module 130, thereby protecting the computer system 10 from being Due to the operating voltage, operating current or operating temperature is too high, the power supply system continues to output power and burns the computer device.

It should be noted that when the detection signal DET generated by the detection circuit module 124 frequently changes between the detection signal DET displayed as a normal state and the detection signal DET displayed as an abnormal state, the latch circuit mode The group 122 locks the operation status signal OP which is displayed as an abnormal state after the detection signal DET which is displayed as the abnormal state for the first time. After that, the operating state signal OP will be fixed and will not change until the stable power supply PWR used by the latch circuit module 122 is low (ie, the battery module 112 does not output the operating power supply BT), and then the latch is re-locked. The detection signal DET displayed as an abnormal state at a time.

In addition, when the state detecting module 116 has not received the operating power BT outputted by the battery module 112 to perform the detecting operation, the state detecting module 116 outputs the operating state signal OP displayed as an abnormal state until The state detecting module 116 receives the operating power BT outputted by the battery module 112 and detects that the operating voltage, operating current or operating temperature of the computer system 10 is normal, and outputs the operating status signal OP displayed as a normal state. Therefore, the switch control circuit 114 does not output the operating power supply BT outputted by the battery module 112 to the operation module 130, but waits until the status detection module is displayed. After detecting the operating state signal OP displayed in the normal state, the switch control circuit 114 outputs the operating power supply BT outputted by the battery module 112 to the operation module 130.

In other words, in the power supply system 100, the battery module 112 transmits its own power supply in combination with the operation of the startup control circuit 110, so that the battery module 112 can activate the battery module 112 to output the operating power supply BT without requiring additional battery power. . Furthermore, the state detecting module 116 and the switch control circuit 114 can detect whether the computer system 10 has the battery power module BT after outputting the operating power source BT. After an abnormal operating state such as an excessive voltage, a high current, or a high temperature, it is determined whether the operating power source BT is output to the operation module 130, thereby protecting the computer system 10 from being burned and damaged.

Please refer to FIG. 2, which is a schematic diagram of another computer system 20 according to an embodiment of the present invention. As shown in FIG. 2, the computer system 20 includes a power supply system 200 and an operation module 230. The computer system 20 is used in a computer device such as a computer, a notebook computer or a tablet computer, and the power supply system 200 is used to provide the power required for the operation of the operation module 230, so that the operation module 230 can perform Internet access, paper processing or playback. Multimedia and other related operations. The power supply system 200 includes a standby starting circuit 240, a backup battery 242, a startup control circuit 210, a battery module 212, a switch control circuit 214, and a state detection module 216.

The coupling relationship and operation of the startup control circuit 210, the battery module 212, the switch control circuit 214, and the state detection module 216 are similar to the startup control circuit 110, the battery module 112, and the switch control circuit 114 of the power supply system 100. The state detection module 116 can be referred to the above description. The main difference between the power supply system 200 and the power supply system 100 is that the power supply system 200 additionally incorporates the backup start circuit 240 and the backup battery 242. The backup battery 242 is a battery such as an alkaline battery or a mercury battery and outputs a backup power source BT_B, which can be regarded as an RTC battery of the computer system 20, for providing power for the operation of the instant clock circuit, so that the computer system 20 can be continuously timed and maintained on time. The standby starting circuit 240 is coupled to the backup battery 242, the detecting circuit module 224 and the battery module 212. The standby starting circuit 240 can generate standby control according to the detection signal DET outputted by the backup power source BT_B and the detecting circuit module 224. The signal CON__B is output to the battery module 212 to activate the battery module 212 to output the operating power source BT.

In addition, the voltage regulator module 220 is coupled to the battery module 112 and the backup battery 242, and can simultaneously receive the standby power output from the operating power supply BT and the backup battery 242 of the battery module 112. BT_B is converted to a stable power supply PWR. The voltage regulator module 220 converts the backup power source BT__B to the stable power source PWR when the operation power source BT is low, and converts the operation power source BT to the stable power source PWR when the operation power source BT is at a high potential.

In detail, the battery module 212 passes through the startup control circuit 110 as previously described. The power control signal CON determines whether to output the operating power BT. The battery module 212 also determines whether to output the operating power BT according to the standby control signal CON_B of the standby starting circuit 240. Assuming that the backup battery 242 does not have a power source or is damaged such that the output backup power source BT_B is at a low potential, the standby startup circuit 240 does not generate the standby control signal CON_B. Therefore, the battery module 212 is controlled according to the power of the startup control circuit 110. The signal CON determines whether to output the operating power supply BT. In this case, the power supply system 200 operates the same as the power supply system 100, and the foregoing description is omitted.

Assuming that the backup battery 242 has a power supply and outputs a high potential backup power source BT_B, when the battery module 112 has not output the operating power source BT, the voltage regulator module 220 first converts the backup power source BT_B to a stable power source PWR to provide power. The detection circuit module 224 is configured to detect the operating voltage, operating current or operating temperature of the computer system and generate a detection signal DET. Then, when the standby power source BT_B is high and the detection signal DET is displayed as the normal state, the standby startup circuit 240 generates the standby control signal CON_B that is displayed as being activated and outputs to the battery module 212 to control the operation of the battery module in the startup state. The power supply BT is operated with the output. In addition, when the standby power source BT_B is low or the detection signal DET is displayed as an abnormal state, the standby startup circuit 240 generates the standby control signal CON_B that is displayed as non-starting and outputs to the battery module 212 to control the operation of the battery module. The initial state does not output the operating power supply BT.

Briefly, in the power supply system 200, the battery module 212 can be activated by the operation of the backup battery 242 and the standby starting circuit 240 when the backup battery 242 is not damaged and has power. Moreover, the battery module 212 can also be activated by the operation of the power source and the combined start control circuit 210 when the backup battery 242 is damaged or has no power. In addition, the standby starting circuit 240 further activates the battery module 212 according to the detection signal DET being displayed in a normal state, which can further protect the computer system 20 from being burned and damaged.

The implementation of the power supply system 100, 200 is not limited to a particular device or component, and may be implemented by related components as desired. For example, please refer to FIG. 3, which is a schematic diagram of an embodiment of the power supply system 200 in FIG. In detail, the battery module 212 has The pins SP and PP, the pins SP are connected in series with the resistor Ri in the interior of the battery module 212 and connected to the high potential Vi, and the pins PP are used to output the operating power source BT. When the battery module 212 has not been connected to any circuit, the pin SP is at a high potential due to the series connection with the resistor Ri to the high potential Vi. In this case, the battery module 212 does not output the operating power source BT. After the battery module 212 is connected to the ground through the external circuit of the pin SP to make the pin SP low, the battery module 212 will start and output the operating power BT via the pin PP.

Therefore, in the power supply system 200, the pin SP of the battery module 212 is coupled to the startup control circuit 210 and the standby startup circuit 240. The startup control circuit 210 includes diodes D1, D2, a resistor R1, a capacitor C1, and a transistor TR1, and the standby startup circuit 240 includes transistors TR3 and TR4. The transistors TR1, TR3, and TR4 are N-type metal oxide semiconductor (MOS) transistors, including a source, a drain, and a gate, but the transistors TR1, TR3, and TR4 may also be bipolar junctions. A transistor such as a bipolar junction transistor (BJT) is not limited.

First, assuming that the backup battery 242 does not have a power source or is damaged such that the output backup power source BT_B is at a low potential, the gate of the transistor TR4 is connected to the backup battery 242 to receive the low potential backup power source BT_B and the transistor TR4. The source is connected to the ground, so that the voltage between the gate and the source of the transistor TR4 is not greater than the forward bias so that the transistor TR4 is turned off and does not conduct, so that the pin SP of the battery module 212 cannot pass through the transistor. TR3 and TR4 are connected to the ground terminal, so that the battery module 212 cannot be activated to output the operating power source BT. The pin SP of the battery module 212 is further connected to the diode D1 of the start control circuit 210, and the diode D1 is connected in series with the resistor R1 and the capacitor C1 and connected to the ground. Since the pin SP is serially connected to the resistor Ri inside the battery module 212 and connected to the high potential Vi, the pin SP is at a high potential and generates a current through the diode D1 and the resistor R1 to charge the capacitor C1. When the voltage across the capacitor C1 is greater than the forward bias between the gate and the source of the transistor TR1, the transistor TR1 is turned on, so that the pin SP of the battery module 212 is connected to the ground via the transistor TR1. And the battery module 212 is activated to output the operating power source BT, and the pin SP of the battery module 212 is turned to a low potential. In addition, since the diode D2 is connected between the pin PP and the capacitor C1, when the battery module 212 outputs the high-potential operating power source BT via the pin PP, The high-potential operating power supply BT will continue to charge the capacitor C1 via the diode D2, so that the voltage across the capacitor C1 can be turned on after the pin SP is turned to a low potential, so that the pin SP is continuously grounded. To continuously start the battery module 212 to output the operating power BT.

Furthermore, the voltage regulator module 220 includes a voltage regulator VR, a transistor TR2, a resistor R2, and diodes D3 and D4. The transistor TR2 is a P-type MOS transistor and includes a source, a drain, and a gate. The transistor TR2 may also be a bipolar junction transistor or the like. The transistor is not limited. After the battery module 212 starts to output the operating power supply BT via the pin PP, the voltage regulator VR is connected to the pin PP to receive the operating power source BT outputted by the battery module 212 and converted into a power source with a relatively stable voltage and output to the power module 224. Diode D3. At the same time, the gate of the resistor R2 and the transistor TR2 is also connected to the pin PP. When the operating power source BT is at a high potential and the standby power source BT_B is at a low potential, the voltage between the gate and the source of the transistor TR2 is less than cis. The bias of the transistor TR2 is turned off and does not conduct. Therefore, the stable power supply PWR is outputted by the diode D3 connected to the voltage regulator VR, that is, the stable power supply PWR is generated by the conversion of the operating power supply BT via the voltage regulator VR and has a relatively stable voltage.

The detecting circuit module 224 is connected between the diodes D3 and D4 and can use the stable power PWR output by the voltage regulator module 220 to detect the operating voltage, operating current or operating temperature of the computer system 20 to generate high. The potential detection signal DET indicates that the operating state of the computer system 20 is normal, or the low-level detection signal DET indicates that the operating state of the computer system 20 is abnormal, and the detection signal DET is outputted to the latch circuit module. 224.

The latch circuit module 224 includes reverse gates NT1, NT2 and a resistor R3. The reverse gates NT1 and NT2 are logic gate circuits, and the stable power supply PWR outputted by the voltage regulator module 220 is used to operate, and the input signal of the input terminal is inverted, and the signal of the input signal is inverted at the output end, such as When the input signal is low, after the reverse gate NT1 or the reverse gate NT2, a high potential signal is generated. The output terminal of the reverse gate NT1 is connected to the input terminal of the reverse gate NT2, and the input terminal of the reverse gate NT1 is connected to the output terminal of the reverse gate NT2, thereby forming a loop to form a latch circuit. The resistor R3 is connected between the output end of the reverse gate NT1 and the input terminal of the reverse gate NT2.

The input terminal of the reverse gate NT1 is connected to the detection circuit module 224 to receive the detection signal DET. When the detection signal DET is high to indicate that the operating state of the computer system 20 is normal, the reverse gate NT1 will detect the signal DET. After inverting, the low-potential signal is output to the input terminal of the reverse gate NT2, and there is no voltage drop across the resistor R3. At the same time, the reverse gate NT2 inverts the low-potential signal and outputs a high potential at the output terminal. The operating status signal OP. When the detection signal DET is low to indicate that the operating state of the computer system 20 is abnormal, the reverse gate NT1 inverts the detection signal DET and outputs a high potential signal to the input terminal of the reverse gate NT2 at the output end, and The resistor R3 will have a voltage across the terminal, and the reverse gate NT2 inverts the high-potential signal and outputs a low-potential operating state signal OP to the output terminal. Once the detection signal DET from the detection circuit module 224 is at a low level, the detection signal DET will maintain the low level regardless of whether the computer system 20 has returned to normal. Only when the stable power supply PWR power supply used by the reverse gates NT1 and NT2 disappears to a low potential and then re-outputs a high potential, the latch circuit will re-lock the low potential detection signal DET to a low potential operation state signal OP. .

The switch control circuit 214 includes transistors TR5, TR6 and a resistor R4. The transistor TR5 is a P-type MOS transistor, the transistor TR6 is an N-type MOS transistor, the transistors TR5 and TR6 include a source, a drain and a gate, and the transistors TR5 and TR6 can also be a double Polar junction transistors and other transistors are not limited.

When the battery module 212 has not yet output the operating power supply BT, the synchronous voltage regulator module 220 cannot output the stable power supply PWR to the detecting circuit module 224 and the latch circuit module 224, so there is no operating power supply BT. The detection signal DET outputted by the detection circuit module 224 is low, and the operating state signal OP outputted by the latch circuit module 224 is also low. When the operating state signal OP is low, the gate of the transistor TR6 is connected to the latch circuit module 224 to receive the low-level operating state signal OP and the source of the transistor TR6 is connected to the ground terminal, and the gate of the transistor TR6 is connected. The voltage between the pole and the source is less than the forward bias and the transistor TR6 is turned off and does not conduct. At the same time, when the transistor TR6 is turned off, the operating power source BT outputted via the pin PP cannot be connected to the ground through the series connected resistor R4, so that there is no voltage across the resistor R4, and thus the gate of the transistor TR5. The voltage between the source and the source is less than the forward bias, and the transistor TR5 is turned off and does not conduct. Therefore, when the transistor TR5 is turned off, the switch control circuit 214 does not output the operating power source BT to the operation module 230.

After the battery module 212 starts to output the operating power BT, the voltage regulator module 220 can output the stable power PWR to the detecting circuit module 224 and the latch circuit module 224, and the detecting circuit module 224 generates a high potential. The detection signal DET is displayed to indicate that the operating state of the computer system 20 is normal and is latched to the high operating state signal OP via the latch circuit module 224. When the operating state signal OP is at a high potential, the gate of the transistor TR6 receives the high-potential operating state signal OP, and the voltage between the gate and the source of the transistor TR6 is greater than the forward biasing to turn on the transistor TR6. At the same time, under the conduction of the transistor TR6, the operating power source BT outputted via the pin PP can be connected to the ground via the series connected resistor R4, so that the voltage across the resistor R4 is between the gate and the source of the transistor TR5. The voltage is greater than the forward bias and the transistor TR5 is turned on. Therefore, when the transistor TR5 is turned on, the switch control circuit 214 can output the operating power source BT to the operation module 230.

In addition, when the detecting circuit module 224 detects that the computer system 20 is not working properly and generates a low-potential detection signal DET to indicate that the operating state of the computer system 20 is abnormal, the latch circuit module 224 is locked. After the low potential detection signal DET is latched, a low potential operating state signal OP is generated and is no longer changed. When the operating state signal OP is at a low potential, as described above, the switch control circuit 214 does not output the operating power supply BT to the operating module 230 to protect the computer system 20 from burning.

On the other hand, assuming that the backup battery 242 has a power source such that the output backup power source BT_B is at a high potential, the gate of the transistor TR4 is connected to the backup battery 242 to receive the high potential backup power source BT_B and the source of the transistor TR4. Connected to the ground, so the voltage between the gate and source of transistor TR4 will be greater than the forward bias so that transistor TR4 is turned on. Meanwhile, when the battery module 212 has not been activated to output the operating power source BT, since the source of the transistor TR2 of the voltage regulator module 220 is connected to the high potential standby power source BT_B and the gate of the transistor TR2 is connected to the low potential operating power source. BT, so the voltage between the source and the gate of the transistor TR2 is greater than the forward bias and the transistor TR2 is turned on. Thereby, the voltage regulator module 220 can output the standby power source BT_B via the diode D4 to be stable. The power supply PWR provides the power required for the detection circuit module 224 to perform detection.

In this case, after the gate of the transistor TR3 receives the detection signal DET of the detecting circuit module 224, when the transistor TR4 is turned on and the detecting signal DET is high, the operating state of the computer system 20 is normal. The voltage between the source and the gate of the transistor TR3 is greater than the forward bias, and the pin SP of the battery module 212 is connected to the ground via the transistors TR3 and TR4 to activate the output of the battery module 212. Operating power supply BT. When the transistor TR4 is turned on and the detection signal DET is low, that is, the operating state of the computer system 20 is abnormal, so that the voltage between the source and the gate of the transistor TR3 is less than the forward bias, and the battery is turned off. The pin SP of the module 212 cannot be connected to the ground through the transistors TR3 and TR4, and the battery module 212 cannot be activated to output the operating power BT.

Briefly, in this embodiment, the pin SP of the battery module 212 is connected to the start control circuit 210 and the standby start circuit 240, so that when the backup battery 242 has power, the standby circuit 240 will have a high potential. The pin SP is connected to the ground, and when the backup battery 242 has no power or damage, the pin SP having a high potential is connected to the ground through the start control circuit 210, thereby starting the battery module 212 to output the operating power BT. At the same time, when the latch circuit module 224 is in an abnormal operating state such as excessive voltage, high current or high temperature in the operating state of the computer system 20, the low-potential detection signal DET is latched to a low potential operating state signal. OP, so that the switch control circuit 214 does not output the operating power supply BT to the operation module 230, and can avoid the change of the operating state signal OP when the detection signal DET changes, and the switch control circuit 214 outputs the operating power supply BT. The operation of the module 230 causes the computer system 20 to burn out.

Specifically, the present invention is applied to a power supply system of a computer system, and the power supply of the battery module itself is combined with the circuit to start the output power of the battery module without the need for an additional battery power source (such as an RTC battery). The battery module output power is activated, and those skilled in the art can modify or change it according to the knowledge. For example, in the embodiment, the startup control circuit 110 generates a power control signal CON that is displayed as being activated to activate the battery module 212 to connect the pin SP of the battery module 212 to the ground through the startup control circuit 110 to start. Battery module 212. however, In other embodiments, the startup control circuit 110 generates a power control signal CON that is displayed as being activated to activate the battery module 212. The power control signal CON can also be input to another specific pin of the battery module 212 to activate the battery module. 212, or the power control signal CON including the start command is transmitted to the battery module 212 to activate the battery module 212, etc., which can be changed according to the design of the battery module 212. Moreover, in the embodiment, the latch circuit module 224 is implemented by using two reverse gates to latch the low-level operation state signal OP. In other embodiments, the latch circuit module 224 can also be implemented by using multiple reverse gates or registers or the like without limitation.

In summary, the conventional technology provides power supply to the startup circuit through the RTC battery to start the battery module output power. When the RTC battery is not powered or damaged, the startup circuit has no power to activate the battery module to output the power. In contrast, the present invention utilizes the power supply of the battery module itself and activates the output power of the battery module through the circuit, and can activate the internal battery module output power without passing through the RTC battery, which is more convenient.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10‧‧‧ computer system

100‧‧‧Power supply system

110‧‧‧Start control circuit

112‧‧‧Battery module

114‧‧‧Switch Control Circuit

116‧‧‧State Detection Module

120‧‧‧Voltage regulator module

122‧‧‧Latch circuit module

124‧‧‧Detection circuit module

130‧‧‧Operating module

BT‧‧‧Operating power supply

PWR‧‧‧ stable power supply

DET‧‧‧ detection signal

OP‧‧‧Operation status signal

STA‧‧‧Battery status signal

CON‧‧‧Power Control Signal

Claims (16)

A power supply system for providing a working power supply for operating a module in a computer system, the power supply system comprising: a battery module for generating a battery status signal and controlling the signal according to a power source Determining whether to output the operating power supply; a start control circuit coupled to the battery module for generating the power control signal according to the battery status signal or the operating power source, and outputting the power control signal to the battery module; The test module is coupled to the battery module for detecting the operating state of the computer system by using the operating power output by the battery module, and generating an operating status signal; and a switch control circuit coupled The battery module, the state detecting module and the operating module are configured to output the operating power outputted by the battery module to the operating module according to the operating state signal. The power supply system of claim 1, wherein when the power control signal indicates that the battery module is operating in an activated state, the battery module outputs the operating power source, and the power control signal indicates that the battery module operates In an initial state, the battery module does not output the operating power. The power supply system of claim 1, wherein when the battery module does not output the operating power, the battery status signal generated by the battery module is a first state, and the operating power is outputted by the battery module. The battery status signal generated by the battery module is in a second state. The power supply system of claim 2, wherein when the battery status signal is the first state or the operating power source is high, the startup control circuit generates the power control signal displayed as being activated to control the battery mode The group operates in an activated state, and when the battery state signal is the second state and the operating power source is low, the startup control circuit generates the power control signal displayed as being non-activated to control the battery module to operate Initial state. The power supply system of claim 1, wherein the state detection module detects the computer system The operating state includes detecting a working voltage, an operating current or an operating temperature of the computer system, and generating the operating status signal when the operating voltage, the operating current or the operating temperature exceeds a corresponding set value The operating state is displayed as an abnormal state, and when the operating voltage, the operating current, or the operating temperature does not exceed the corresponding set value, the operating status signal is generated to indicate that the operating state is a normal state. The power supply system of claim 1, wherein the switch control circuit outputs the operating power outputted by the battery module to the operating module when the operating state signal indicates that the operating state is a normal state. When the operating status signal indicates that the operating state is an abnormal state, the operating power output by the battery module is not output to the operating module. The power supply system of claim 1, wherein the state detection module comprises: a voltage regulator module coupled to the battery module for converting the operating power output by the battery module, Outputting a stable power supply; a detecting circuit module coupled to the voltage voltage stabilizing module for detecting the operating state of the computer system and generating a detecting signal; and a lock The latch circuit module is coupled to the voltage regulator module and the detection circuit module for using the stable power source to latch the detection signal and generate the operation status signal. The power supply system of claim 7, further comprising: a backup battery for outputting a backup power source; and a standby starting circuit coupled to the backup battery, the detecting circuit module and the battery module And generating a standby control signal according to the standby power source and the detection signal, and outputting the signal to the battery module; wherein the voltage voltage regulator module is coupled to the battery module and the backup battery, Converting the operating power source or the standby power source to output the stable power source; wherein the battery module determines whether to output the operating power source according to the power source control signal or the standby control signal. The power supply system of claim 8, wherein the backup power source is high and the detecting When the signal indicates that the operating state is a normal state, the standby starting circuit generates the standby control signal that is displayed as being activated to control the battery module to operate in a startup state, and the standby power source is low or the detection signal is displayed. When the operating state is an abnormal state, the standby starting circuit generates the standby control signal that is displayed as being non-activated to control the battery module to operate in an initial state. The power supply system of claim 8, wherein when the power control signal or the standby control signal indicates that the battery module is operating in an activated state, the battery module outputs the operating power supply, and the power control signal is The standby control signal indicates that the battery module does not output the operating power when the battery module is operated in an initial state. The power supply system of claim 1, wherein the startup control circuit comprises: a first diode comprising a first end and a second end, the first end being coupled to the battery module, The first capacitor is coupled to the second end of the first diode; the first capacitor includes a first One end is coupled to the second end of the first resistor, and a second end is coupled to a ground end; a first transistor includes a first end, a second end, and a control end, the first One end is coupled to the ground end, and the control end is coupled between the second end of the first resistor and the first end of the first capacitor, the second end is coupled to the battery module, And outputting the power control signal to the battery module; and a second diode comprising a first end coupled to the control end of the first transistor, the second end of the first resistor, and the first The first end of the capacitor and the second end are coupled to the battery module for receiving the operating power. The power supply system of claim 8, wherein the voltage regulator module comprises: a voltage regulator comprising an input end and an output end coupled to the battery module for receiving The operating power output by the battery module; a second transistor includes a first end, a second end, and a control end, the second end is coupled to the backup battery for receiving the backup power output by the backup battery, and the control end is coupled At the input end of the voltage regulator, a second resistor includes a first end coupled between the input end of the voltage regulator and the control end of the second transistor, and a second end The third diode body includes a first end and a second end, the first end is coupled to the output end of the voltage regulator, and a fourth diode The first end is coupled to the first end of the second transistor, and the second end is coupled to the second end of the third diode for outputting the stable power. The power supply system of claim 12, wherein the voltage regulator is a Low Dropout Regulator. The power supply system of claim 8, wherein the latch circuit module comprises: a first reverse gate, comprising a power input end, a first end and a second end, wherein the power input end is coupled to The voltage regulator module is configured to receive the stable power supply, the first end is coupled to the detection circuit module for receiving the detection signal; and the second reverse gate comprises a power input end, a first The first end and the second end are coupled to the voltage regulator module for receiving the stable power supply, the first end is coupled to the second end of the first reverse gate, and the second end The first end of the first back gate is coupled to the first end of the first back gate and the second end is coupled to the first end of the first back gate and the second end The first end of the second reverse gate and the second end are coupled to a ground end. The power supply system of claim 8, wherein the standby starting circuit comprises: a third transistor, comprising a first end, a second end, and a control end, the first end being coupled to the battery module The group is configured to output the standby control signal, and the control end is coupled to the detecting circuit module for receiving the detecting signal; a fourth transistor includes a first end, a second end, and a control end, the first end is coupled to the second end of the third transistor, and the second end is coupled to a ground end. The control terminal is coupled to the backup battery for receiving the backup power source. The power supply system of claim 1, wherein the switch control circuit comprises: a fifth transistor comprising a first end, a second end, and a control end, the first end is configured to output the operation a power supply to the operation module, the second end is coupled to the battery module for receiving the operating power; a sixth transistor includes a first end, a second end, and a control end, the first The end is coupled to the control end of the fifth transistor, the second end is coupled to a ground end, the control end is coupled to the state detecting module for receiving the operating state signal; and a fourth The resistor includes a first end coupled between the control end of the fifth transistor and the first end of the sixth transistor, and a second end coupled to the second end of the fifth transistor .