CN114430187A

CN114430187A - Intelligent power distribution system for power supply

Info

Publication number: CN114430187A
Application number: CN202111442847.1A
Authority: CN
Inventors: 郭华北
Original assignee: Shenzhen Lipower Power Supply Co ltd
Current assignee: Shenzhen Lipower Power Supply Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-03

Abstract

The invention belongs to the technical field of power supply, and provides an intelligent power distribution system for a power supply, which is characterized in that a main control module is arranged to be communicated with a first power interface and a second power interface, the main control module sends out a first control signal, a second control signal and a distribution control signal, the first power interface outputs first power according to the first control signal, the second power interface outputs second power according to the second control signal, the first power interface and the second power interface also output third power and fourth power according to the distribution control signal, and the first power, the second power, the third power and the fourth power meet the following requirements: w1+ W2 > W3+ W4; w1 represents the first power, W2 represents the second power, W3 represents the third power, and W4 represents the fourth power. Through the technical characteristics, the intelligent power distribution system provided by the invention can realize safe power distribution below the total output power W1+ W2, thereby meeting the power requirements of adapting to various electronic devices.

Description

Intelligent power distribution system for power supply

Technical Field

The invention belongs to the technical field of power supply charging, and relates to an intelligent power distribution system for a power supply.

Background

With the popularization of mobile electric devices such as mobile computers, mobile phones, wearable devices and electric vehicles, how to provide suitable power supplies for the mobile electric devices and guarantee the supply of electric quantity is always a problem of concern in the technical field of charging.

In the existing power supplies, most power supplies are power supplies for a single scene, and various power distribution options cannot be provided in the aspect of charging strategy selection, so that the universality is insufficient, and the charging requirements of electronic equipment with different powers cannot be well met.

In summary, the conventional power supply cannot provide various power distribution options in the selection of a charging strategy, so that the universality is not sufficient, and the charging requirements of electronic devices with different powers cannot be well met.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides an intelligent power distribution system for a power supply, which comprises a main control module and further comprises:

the first power interface is connected with the main control module and outputs first power according to a first control signal; the first control signal is sent out by the main control module;

the second power interface is connected with the main control module and outputs second power according to a second control signal; the second control signal is sent by the main control module;

the first power interface and the second power interface also output a third power and a fourth power according to a distribution control signal sent by the main control module; the first power, the second power, the third power, and the fourth power satisfy the following algorithm limits:

w1+ W2 > W3+ W4; w1 represents the first power, W2 represents the second power, W3 represents the third power, and W4 represents the fourth power.

Preferably, the first power, the second power, the third power, and the fourth power further satisfy:

if W1 > W2, when the distribution control signal is to reduce the power output of the first power interface, keeping W2 unchanged, and controlling the first power interface to output the third power, wherein W3 < W1.

if W1 is greater than W2, the allocation control signal is to increase the power output of the first power interface, then the allocation is wrongly fed back, and the allocation control signal is regenerated.

if W1 < W2, when the distribution control signal is to reduce the power output of the second power interface, keeping W1 unchanged, and controlling the second power interface to output the fourth power, wherein W4 < W2.

and if W1 is less than W2, feeding back the wrong distribution and regenerating the distribution control signal when the distribution control signal is to increase the power output of the second power interface.

when the distribution control signal is to increase the first power, decrease the second power, or decrease the first power and increase the second power, the first power interface and the second power interface output the third power and the fourth power according to the distribution control signal, if W1 is W2.

and if the W1 is W2, when the distribution control signal is to increase the first power, increase the second power or decrease the first power and decrease the second power, feeding back an incorrect distribution and regenerating a distribution control signal.

Preferably, the master control module comprises a buck-boost control module and an output power distribution module; the buck-boost control module is in communication with the output power distribution module and in communication with the first power interface and the second power interface.

Furthermore, the intelligent power distribution system for the power supply also comprises an output protection module; the output protection module is communicated with the main control module and feeds back an output protection signal to the main control module when power output fails.

Furthermore, the intelligent power distribution system for the power supply also comprises a lithium battery management module; the lithium battery management module is connected with the lithium battery pack and communicated with the main control module.

In a further improvement, the lithium battery pack comprises a plurality of lithium batteries, the plurality of lithium batteries form a lithium battery string with 1-N battery sections under the selection of the selection terminal, the lithium battery string is a plurality of strings, and the plurality of strings of lithium batteries are connected in series and parallel to form the lithium battery pack; n is a natural number;

the lithium battery management module is connected with the lithium battery pack and comprises the selection terminal; and the lithium battery management module acquires the dynamic parameters of the lithium battery pack and manages the lithium battery pack.

Preferably, the dynamic parameters include the number of cells representing the change of the cell section number and the electrical property parameters representing the change of the electrical property of the lithium battery pack.

In an improvement, the intelligent power distribution system for the power supply comprises a DC-DC module; and the DC-DC module is connected with the lithium battery management module and provides a direct current power supply to the outside.

In an improvement, the main control module is connected with the DC-DC module.

In an improved mode, the main control module monitors the functional state of the DC-DC module, and controls the warning module to perform abnormal alarm when the functional state of the DC-DC module is abnormal.

In an improvement, the main control module controls the DC-DC module to be switched on or off.

In an improvement, the intelligent power distribution system for the power supply comprises a DC-AC module; and the DC-AC module is connected with the lithium battery management module and provides an alternating current power supply for the outside.

In an improvement, the intelligent power distribution system for the power supply comprises a DC-AC module; the DC-AC module is connected with the main control module, the DC-AC module is connected with the lithium battery management module, and the DC-AC module provides an alternating current power supply to the outside.

In an improvement, the intelligent power distribution system for the power supply comprises a DC-AC module and a soft start module; the DC-AC module is connected with the main control module through the soft start module, the main control module is connected with the lithium battery management module, and the DC-AC module provides an alternating current power supply to the outside.

Specifically, the main control module controls the on or off of the DC-AC module.

Compared with the prior art, the invention has the beneficial effects that:

the invention sets a main control module to communicate with a first power interface and a second power interface, the main control module sends out a first control signal, a second control signal and a distribution control signal, the first power interface outputs a first power according to the first control signal, the second power interface outputs a second power according to the second control signal, the first power interface and the second power interface also output a third power and a fourth power according to the distribution control signal, and the first power, the second power, the third power and the fourth power meet the following requirements: w1+ W2 > W3+ W4; w1 represents the first power, W2 represents the second power, W3 represents the third power, and W4 represents the fourth power. Through the technical characteristics, the intelligent power distribution system provided by the invention can realize safe power distribution below the total output power W1+ W2, thereby meeting the power requirements of adapting to various electronic devices.

Drawings

FIG. 1 is a schematic circuit diagram of an intelligent power distribution system for power supplies;

FIG. 2 is a schematic diagram of a circuit configuration of a protocol circuit;

FIG. 3 is a schematic diagram of an improved circuit configuration of an intelligent power distribution system for a power supply;

FIG. 4 is a schematic diagram of a circuit structure of a lithium battery management module;

FIG. 5 is a schematic diagram of another circuit configuration of the intelligent power distribution system for power supplies;

FIG. 6 is a schematic diagram of yet another circuit configuration of an intelligent power distribution system for a power supply;

FIG. 7 is a schematic diagram of yet another circuit for an intelligent power distribution system for a power supply;

FIG. 8 is a schematic diagram of another improved circuit configuration of the intelligent power distribution system for power supplies;

fig. 9 is a schematic circuit diagram of a soft start module.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

Example one

Referring to fig. 1, in order to overcome the defects in the prior art, the present embodiment provides an intelligent power distribution system for a power supply, including a main control module, further including:

the first power interface is connected with the main control module and outputs first power according to the first control signal; the first control signal is sent out by the main control module;

the second power interface is connected with the main control module and outputs second power according to a second control signal; the second control signal is sent out by the main control module;

the first power interface and the second power interface also output a third power and a fourth power according to a distribution control signal sent by the main control module; the first power, the second power, the third power and the fourth power satisfy the following algorithm limits:

It should be noted that, the intelligent power distribution system of the present embodiment can implement safe power distribution below the total output power W1+ W2, so as to meet the power requirement of adapting to various electronic devices.

It should be noted that the first power and the second power may be default output powers of the interface, and the third power and the fourth power may be redistributed output powers.

In some preferred examples, the first power, the second power, the third power, and the fourth power further satisfy:

if W1 is greater than W2, when the distribution control signal is to reduce the power output of the first power interface, the W2 is kept unchanged, the first power interface is controlled to output the third power, and W3 is less than W1.

It should be further noted that, in the preferred example, the power supply circuit corresponding to the first power interface may be stepped down by the step-down control, and the third power may be output, so that the charging requirement lower than the first power may be satisfied. Meanwhile, the second power interface outputs the constant power, namely the value of the fourth power is kept consistent with the second power, so that the complex circuit setting can be avoided, the cost is saved, and the circuit stability is improved.

if W1 > W2, when the distribution control signal is to increase the power output of the first power interface, the wrong distribution is fed back, and the distribution control signal is regenerated.

It should be noted that the system defaults that the highest output power is not boosted any more, so that power distribution in the highest power category is ensured, and power supply safety is ensured.

It should be noted that, in the preferred example, the power supply circuit corresponding to the second power interface may be stepped down by the step-down control, and the fourth power is output, so that the charging requirement lower than the second power is satisfied. Meanwhile, the first power interface outputs the power which is not changed, namely the value of the third power is kept consistent with the first power, so that the complex circuit setting can be avoided, the cost is saved, and the circuit stability is improved.

In a preferred example, the first power, the second power, the third power, and the fourth power further satisfy:

and if the W1 is less than the W2, feeding back the wrong distribution and regenerating the distribution control signal when the distribution control signal is to increase the power output of the second power interface.

if W1 is equal to W2, the first power interface and the second power interface output the third power and the fourth power according to the distribution control signal when the distribution control signal is to increase the first power, decrease the second power, or decrease the first power and increase the second power.

It should be noted that the first power interface and the second power interface may output the same power, supply power to devices with the same power requirement, and may perform lifting allocation on output interfaces with the same power to adapt to various charging devices, thereby achieving charging safety.

if W1 is W2, when the distribution control signal increases the first power, increases the second power, or decreases the first power and decreases the second power, an erroneous distribution is fed back, and the distribution control signal is regenerated.

It should be noted that different ramp-up and ramp-down powers are not allowed for the simplification of the circuit.

It should be noted that, the above power allocation can be implemented by setting a buck-boost control module and an output power allocation module in the main control module, where the buck-boost control module is in communication with the output power allocation module and in communication with the first power interface and the second power interface.

In an improved example, the power distribution can be realized through communication of the protocol circuit, the master control module, the first power interface and the second power interface, the protocol circuit is connected with the electronic device through the first power interface and the second power interface for communication, the power requirement of the electronic device is obtained, the power requirement of the electronic device is transmitted to the master control module, the master control module sends out a power distribution signal, and the output power is redistributed.

Specifically, referring to fig. 2, the protocol circuit includes: a first interface communication circuit connected to the first power interface CON1, for communicating with peripheral devices; a second interface communication circuit connected to the second power interface J2 and communicating with peripheral devices; the sampling circuit is connected with the first interface communication circuit and the second interface communication circuit for sampling; a voltage stabilizing circuit connected with the sampling circuit and providing a voltage stabilizing source; and an output control circuit connected to the second power interface J2 for output control.

Preferably, the first interface communication circuit includes: the LED driving circuit comprises a control chip U1, a capacitor C3, a resistor R3, a capacitor C2, a capacitor C6, a capacitor C7A, a resistor R7, a capacitor C7, a capacitor C8A, a capacitor C8, a resistor R8, a resistor R11, a resistor R16, a capacitor C9, a resistor R5, a diode D6, a resistor R6, a triode Q1, a resistor R10, a photodiode LED1, a capacitor C5, a capacitor C4, a capacitor C11, a resistor R4, a resistor R9, a capacitor C1, a resistor R14 and a photodiode LED 2.

The pin GPIO of the control chip U1 is grounded through a resistor R14 and a photodiode LED2 which are connected in series, and the pin VDD of the control chip U1 is connected with a capacitor C6.

Pin 16 and pin 17 of the control chip U1 are connected to ground, pin 15 of the control chip U1 is connected to the first ends of the capacitor C2 and the resistor R3, the second end of the resistor R3 is connected to the capacitor C3, the cathode of the diode D6, the first end of the resistor R6, and the first end of the transistor Q1, and the anode of the diode D6, the second end of the resistor R6, and the second end of the transistor Q1 are connected to the pin GATE of the control chip U1 through the resistor R17.

Pin 14 of the control chip U1 is connected to the first end of the capacitor C7A, the first end of the resistor R7, the first end of the capacitor C8A, and the first end of the resistor R8, the second end of the capacitor C7A is connected to pin 11 of the control chip U1, the second end of the resistor R7 is connected to pin 11 of the control chip U1 through the capacitor C7, and the second end of the resistor R8 is connected to the second end of the capacitor C8A and pin 10 of the control chip U1 through the capacitor C8.

Pin 13 of the control chip U1, the third terminal of the transistor Q1, the first terminal of the resistor R10, and the first terminal of the capacitor C5 are connected to the first power interface CON1, the second terminal of the resistor R10 is connected to the anode of the photodiode LED1, the cathode of the photodiode LED1 is connected to the first terminal of the resistor R5, the first terminal of the resistor R16, and the first power interface CON1, the second terminal of the resistor R5 is connected to the first terminal of the capacitor C9, the first terminal of the resistor R11, and pin 9 of the control chip U1, and the second terminal of the capacitor C9 is connected to the second terminal of the resistor R11 and the second terminal of the resistor R16.

Pin 12 of the control chip U1 is connected to capacitor C1.

A second end of the capacitor C5 is connected to the first end of the capacitor C4 and the first end of the capacitor C11, a second end of the capacitor C4 is connected to the first end of the resistor R4 and the first power interface CON1, a second end of the resistor R4 is connected to the pin CC2 of the control chip U1, a second end of the capacitor C11 is connected to the first end of the resistor R9 and the first power interface CON1, and a second end of the resistor R9 is connected to the pin CC1 of the control chip U1.

Preferably, the second interface communication circuit includes: control chip U5, resistance R26 and electric capacity C26.

Pin D + and pin 6 of the control chip U5 are connected to the second power interface J2, pin 5 of the control chip U5 is connected to the first end of the resistor R26 and the first end of the capacitor C26, the second end of the resistor R26 is connected to the second power interface J2, and the second end of the capacitor C26 is connected to ground.

In a preferred example, the intelligent power distribution system for power supplies further comprises an output protection module; the output protection module is communicated with the main control module and feeds back an output protection signal to the main control module when the power output fails.

Example two

Referring to fig. 3, the present embodiment provides an intelligent power distribution system for a power supply, further including a lithium battery management module; the lithium battery management module is connected with the lithium battery pack and communicated with the main control module.

The specific circuit of the lithium battery pack and the lithium battery management module is described as follows.

On one hand, the lithium battery pack comprises a plurality of lithium batteries, the lithium batteries form a lithium battery string with 1-N battery sections under the selection of a selection terminal, the lithium battery string is a plurality of strings, and the plurality of strings of lithium batteries are connected in series and parallel to form the lithium battery pack; n is a natural number;

it should be noted that the lithium battery pack constructed by using multiple lithium batteries is a basis for selecting multiple power supply strategies. In the embodiment, a plurality of lithium batteries are utilized to form the lithium battery string, the lithium battery string is a plurality of strings, and the number of each string of the lithium battery string can be selected through the selection terminal, so that the plurality of strings of lithium batteries connected in parallel form the lithium battery pack with variable floating number, and hardware support is provided for providing various power supply strategies.

It should be noted that, under the selection of the selection terminal, the number of the series-connected battery sections of the lithium battery string may be 1 section, 2 sections, 3 sections, 4 sections, N sections, and so on. Wherein N is a natural number.

On one hand, the lithium battery management module is connected with the lithium battery pack and comprises a selection terminal; the lithium battery management module acquires dynamic parameters of the lithium battery pack and manages the lithium battery pack.

It should be noted that, when a selection terminal in the lithium battery management module is triggered, the selection of the number of lithium battery sections in the lithium battery pack can be realized, so that the selection of various charging strategies is met.

It is also noted that the dynamic parameters include the number of cells that characterize the change in cell number and the electrical performance parameters that characterize the change in electrical performance of the lithium battery pack. The electrical property parameter may be a voltage parameter, a current parameter, a temperature parameter, and the like.

It should be further noted that the lithium battery management module obtains dynamic parameters of the lithium battery pack and manages the lithium battery pack, so that the complex lithium battery structure with the floating battery section number can be optimally managed, and various charging strategies can be selected.

Various preferred examples with special technical effects are provided below, in particular as follows.

In a preferred example, the voltage of all lithium batteries in the lithium battery pack is acquired;

comparing the voltages of all the batteries with the overcharge detection voltage of the overcharge detection end, the overdischarge detection voltage of the overdischarge detection end and the voltage of the overcurrent detection end;

and when the voltage of all the batteries is between the overcharge detection voltage and the overdischarge detection voltage and is lower than the overcurrent detection voltage, controlling the lithium battery pack to normally supply power to the outside.

comparing the voltages of all the batteries with the overcharge detection voltage of the overcharge detection end;

and the voltage of any battery is higher than the overcharge detection voltage, and the duration time exceeds the overcharge protection delay time, so that the lithium battery pack is controlled to enter an overcharge protection state.

if the voltage of any battery is higher than the overcharge detection voltage and the duration time of the voltage higher than the overcharge detection voltage does not exceed the overcharge protection delay time, judging the reduction condition of the battery voltage;

resetting the overcharge delay time if the battery voltage drops below the overcharge detection voltage and the duration of the undershoot exceeds the overcharge reset delay time; otherwise, the drop in battery voltage is identified as an extraneous disturbance for the masking process.

comparing all battery voltages with an overcharge relief voltage;

if all the battery voltages are lower than the overcharge relief voltage and the lower than the duration time exceeds the overcharge relief delay time, acquiring the voltage of the load terminal and comparing the voltage with the load detection voltage;

and if the voltage of the load terminal is greater than the load detection voltage, removing the overcharge protection state of the lithium battery pack.

In a preferred example, the voltages of all the batteries are acquired;

comparing the voltages of all the batteries with an over-discharge protection voltage;

and if the voltage of any battery is lower than the over-discharge protection voltage and the lower duration time exceeds the over-discharge protection delay time, controlling the lithium battery pack to enter an over-discharge protection state.

In a preferred example, the voltages of all the batteries and the voltage of the load end are obtained;

and when the voltage of the load end is between the dormancy detection voltage and the charging detection voltage, and the voltages of all the batteries are higher than the over-discharge release voltage and are maintained to exceed the over-discharge release time delay, releasing the over-discharge protection state of the lithium battery pack.

In a preferred example, when the lithium battery pack enters the over-discharge protection state and the entering time exceeds the dormancy delay time, the lithium battery pack is controlled to enter the dormancy state, so that the electric energy is saved.

In a preferred example, when the voltage at the load end is lower than the sleep detection voltage, the over-discharge protection state of the lithium battery pack is released.

In a preferred example, the voltage drop of the current detection resistor on the main circuit is detected through the charging connection terminal detection; and when the voltage drop of the current detection resistor is greater than the protection threshold value and the duration time exceeds the overcurrent protection delay time, controlling the lithium battery pack to enter an overcurrent protection state.

In a preferred example, when the voltage of the charging connection terminal is less than VDD/2 and the duration time exceeds the overcurrent recovery delay time, the overcurrent protection state of the lithium battery pack is released.

In a preferred example, the following equalization scheme may be employed to equalize the capacities of the respective cells in the battery pack.

When the voltage of a certain battery in all the batteries is higher than the balanced starting voltage and the voltages of other batteries are lower than the balanced starting voltage, the balance is started, and the external discharging loop is conducted;

when the voltage of the battery for starting the discharging loop is reduced to be lower than the balanced starting voltage, or the voltages of all the batteries are higher than the balanced starting voltage, the balancing is closed;

after the lithium battery pack enters overcharge protection, the external balanced discharge loop of the battery continues working, and when the voltage of all the batteries is lower than overcharge relief voltage, the lithium battery pack is controlled to normally supply power.

By the example, the battery pack can be cycled until all the battery voltages are above the balance starting voltage, and the technical effect of balancing the capacity of each battery in the battery pack is achieved.

In one preferred example, the voltages of all the batteries are acquired; when the voltage of any battery is lower than the low-voltage charge prohibition threshold value, the connection between the charge connection end and the lithium battery pack is turned off, so that low-voltage charge is avoided, and the charge safety is realized.

In a preferred example, the external temperature change is detected through an NTC resistor, and if the detected voltage reaches a comparison threshold and the charge-discharge over-temperature protection delay time is maintained, the charge-discharge over-temperature protection is triggered;

if the temperature drop amplitude exceeds the charge-discharge over-temperature release hysteresis temperature and the time reaches the charge-discharge over-temperature release delay, the over-temperature protection is released.

In a further embodiment, referring to fig. 4, a lithium battery management module includes: chip U7, resistor R146, diode D17, resistor R147, capacitor C13, capacitor C14, resistor R148, resistor R149, resistor R150, resistor R151, resistor R152, resistor R153, transistor Q16, capacitor C115, resistor R154, resistor R155, transistor Q17, capacitor C116, resistor R156, resistor R158, transistor Q18, capacitor C117, resistor R160, resistor R162, transistor Q19, capacitor C118, capacitor C119, resistor R164, resistor R165, resistor NTC, interface J9, resistor R168, resistor R169, capacitor C120, capacitor C121, capacitor C122, resistor R163, resistor R166, MOS transistor Q20, MOS transistor Q21, MOS transistor Q22, MOS transistor Q23, resistor R167, resistor R161, resistor R159, and resistor R157.

A first end of the resistor R146 is connected with an anode of the diode D17 and a first end of the capacitor C13, and the resistor R148 and the resistor R151 are connected in parallel and connected with a second end of the resistor R146 together to a VBAT end; the resistor R148 and the resistor R151 are connected in parallel and are connected with the second end of the resistor R146 together to be connected with the VBAT end;

a first end of the resistor R147 is connected with a cathode of the diode D17, and a second end of the resistor R147, a first end of the capacitor C14, a first end of the resistor R149 and the chip U7 are connected; the second end of the resistor R149 is connected to the first end of the resistor R150 and the chip U7, and the second end of the resistor R150 is grounded; the second terminal of the capacitor C14, the second terminal of the capacitor C13 and the ground terminal are connected.

The first end of the resistor R152 and the first end of the resistor R153 are connected, the second end of the resistor R152, the first end of the capacitor C115 and a pin VC4 of a chip U7 are connected, the second end of the capacitor C115 is grounded, the second end of the resistor R153 is connected with the first end of the triode Q16, and the second end of the triode Q16 is connected with a pin VB4 of a chip U7.

The first end of the resistor R154, the first end of the resistor R155 and the third end of the triode Q16 are connected, the second end of the resistor R154, the first end of the capacitor C116 and the pin VC3 of the chip U7 are connected, the second end of the capacitor C116 is grounded, the second end of the resistor R155 is connected with the first end of the triode Q17, and the second end of the triode Q17 is connected with the pin VB3 of the chip U7.

The first end of the resistor R156, the first end of the resistor R158 and the third end of the triode Q17 are connected, the second end of the resistor R156, the first end of the capacitor C117 and the pin VC2 of the chip U7 are connected, the second end of the capacitor C117 is grounded, the second end of the resistor R158 is connected with the first end of the triode Q17, and the second end of the triode Q17 is connected with the pin VB2 of the chip U7.

The first end of resistance R160, the first end of resistance R162, the third end of triode Q18 is connected, the second end of resistance R160, the first end of electric capacity C1178 and the pin VC1 of chip U7 are connected, the second end ground of electric capacity C118, the second end of resistance R162 is connected with the first end of triode Q19, the second end of triode Q19 is connected with pin VB1 of chip U7, the third end and the ground connection of triode Q19.

The first terminal of the capacitor C119 is connected to the pin VSS and the ground terminal of the chip U7, and the first terminal of the capacitor C119 is connected to the pin REG of the chip U7.

A first end of the resistor R164 and a first end of the resistor R165 are respectively connected with a pin RCOT and a pin RDOT of the chip U7, a second end of the resistor R164 and a second end of the resistor R165 are connected with a first end of the resistor NTC, and a second end of the resistor NTC is connected with a first end of the resistor R168, a first end of the resistor R169, a first end of the capacitor C120, a first end of the capacitor C121 and a first end of the capacitor C122 to be commonly connected with the ground; the second end of the resistor R168 and the second end of the resistor R169 are commonly connected with the first end of the resistor R163, the first end of the resistor R166, the MOS transistor Q20 and the MOS transistor Q22; the second end of the capacitor C120, the second end of the capacitor C121 and the second end of the capacitor C122 are respectively connected with the chip U7, the second end of the capacitor C122 is connected with the second end of the resistor R163, the second end of the resistor R166 and the MOS transistor Q20, the MOS transistor Q20 is connected with the MOS transistor Q21, the MOS transistor Q22 is connected with the MOS transistor Q23, the MOS transistor Q21 is connected with the chip U7 through the resistor R161, and the MOS transistor Q21 is connected with the MOS transistor Q23, the first end of the resistor R167 and the first end of the resistor R157 to the ground; the second end of the resistor R167 is commonly connected with the MOS transistor Q23 and the first end of the resistor R159, the second end of the resistor R159 is connected with the chip U7, and the second end of the resistor R157 is connected with the chip U7.

It should be noted that the chip U7 may be a CW1046 chip.

It should be further noted that the MOS transistor Q20, the MOS transistor Q21, the MOS transistor Q22, and the MOS transistor Q23 are connected to the chip U7, and are turned on or turned off by receiving a control signal of the chip U7, so that the lithium battery pack is managed as a whole.

It should be further noted that the chip U7 may manage a single battery through corresponding unit circuits of the peripheral VC1, VC2, VC3, and the like.

EXAMPLE III

Referring to fig. 5, on the basis of the above embodiment, the lithium battery management module is connected to the DC-DC module, and the DC-DC module supplies a direct current power to the outside.

In a modified embodiment, see fig. 5, the master control module is connected to the DC-DC module.

It should be noted that the main control module monitors the functional state of the DC-DC module, and controls the warning module to perform an abnormal alarm when the functional state of the DC-DC module is abnormal.

It should be further noted that the master control module may control the DC-DC module to be turned on or off.

It should be further noted that the DC-DC module can enable the power supply system to provide DC power, so as to adapt to different DC charging scenarios.

Example four

Referring to fig. 6, on the basis of the above embodiment, the lithium battery management module is connected with the DC-AC module; the DC-AC module provides an alternating current power supply for the outside.

It should be noted that the DC-AC module can enable the power supply system to provide AC power supply, and is suitable for different AC charging scenarios.

In an alternative embodiment, referring to fig. 7, the DC-AC module is connected to the lithium battery management module through the main control module, the DC-DC module is connected to the lithium battery management module, and the DC-AC module provides an AC power to the outside.

It should be noted that the main control module monitors the functional state of the DC-AC module, and controls the warning module to perform an abnormal alarm when the functional state of the DC-DC module is abnormal.

It should be further noted that the master control module may control the DC-AC module to be turned on or off.

In an alternative embodiment, referring to fig. 8, the DC-AC module is connected to the main control module through the soft start module, the main control module is connected to the lithium battery management module, the DC-DC module is connected to the lithium battery management module, and the DC-AC module provides an AC power to the outside.

Compared with the technical scheme that the DC-AC module is directly connected with the main control module, the soft start module is arranged between the DC-AC module and the main control module, so that the main control module and the DC-AC module can be started safely, and surge breakdown or damage is avoided.

Preferably, referring to fig. 9, the soft start module includes: the circuit comprises a capacitor C26, a resistor R44, a resistor R45, a resistor R46, a resistor R48, a capacitor C25, a chip U5, a capacitor EC4, a resistor R50, a capacitor C29, a resistor R49, a capacitor EC3, a capacitor C24 and a capacitor C27.

The first end of the capacitor C26 is connected to the first end of the resistor R44, the first end of the resistor R46 and the DCVCC end, the second end of the capacitor C26 is grounded, the second end of the resistor R44 is connected to the first end of the resistor R45, the first end of the capacitor C25 and the chip U5, the second end of the resistor R45 and the second end of the capacitor C25 are connected to ground, and the second end of the resistor R46 is grounded through the resistor R48 and connected to the chip U5.

The chip U5 is connected with the positive electrode of the capacitor EC4, the negative electrode of the capacitor EC4 is connected with the first end of the resistor R50 and the chip U5, the second end of the resistor R50 is connected with the first end of the capacitor C29 and the first end of the resistor R49 in common, and the second end of the capacitor C29 and the second end of the resistor R49 are connected with the chip U5.

The positive electrode of the capacitor EC3, the first end of the capacitor C24 and the first end of the capacitor C27 are connected together and then connected with the chip U5, the negative electrode of the capacitor EC3 and the second end of the capacitor C24 are connected together with the ground and the VCC end, and the second end of the capacitor C27 is connected together with the ground.

It should be noted that the soft start module is matched with a peripheral circuit of the chip U5 together to realize that direct current is converted into alternating current to supply power to the outside, so that the electric equipment and the main control module are prevented from being damaged due to instantaneous high voltage during starting, soft start is realized, and the circuit cost is saved.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides an intelligent power distribution system for power, includes, the master control module, its characterized in that still includes:

2. The intelligent power distribution system for power supplies according to claim 1, wherein the first power, the second power, the third power, and the fourth power further satisfy:

3. The intelligent power distribution system for power supplies according to claim 1, wherein the first power, the second power, the third power, and the fourth power further satisfy:

4. The intelligent power distribution system for power supplies according to claim 1, wherein the first power, the second power, the third power, and the fourth power further satisfy:

5. The intelligent power distribution system for power supplies according to claim 1, wherein the first power, the second power, the third power, and the fourth power further satisfy:

6. The intelligent power distribution system for power supplies according to claim 1, wherein the first power, the second power, the third power, and the fourth power further satisfy:

7. The intelligent power distribution system for power supplies according to claim 1, wherein the first power, the second power, the third power, and the fourth power further satisfy:

8. The intelligent power distribution system for power supplies of any one of claims 1-7, wherein the master control module comprises a buck-boost control module and an output power distribution module; the buck-boost control module is in communication with the output power distribution module and in communication with the first power interface and the second power interface.

9. The intelligent power distribution system for power supplies according to any one of claims 1-7, further comprising an output protection module; the output protection module is communicated with the main control module and feeds back an output protection signal to the main control module when power output fails.

10. The intelligent power distribution system for power supplies of any one of claims 1-7, further comprising a lithium battery management module; the lithium battery management module is connected with the lithium battery pack and communicated with the main control module.