CN111684681B - Voltage bootstrap chip, weak light acquisition circuit, equipment and control method thereof - Google Patents
Voltage bootstrap chip, weak light acquisition circuit, equipment and control method thereof Download PDFInfo
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- CN111684681B CN111684681B CN202080000615.8A CN202080000615A CN111684681B CN 111684681 B CN111684681 B CN 111684681B CN 202080000615 A CN202080000615 A CN 202080000615A CN 111684681 B CN111684681 B CN 111684681B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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Abstract
The application belongs to the field of weak energy collection and discloses a voltage bootstrap chip, a weak light collection circuit, equipment and a control method thereof; the first optical energy acquisition assembly, the first energy storage assembly, the second energy storage assembly and the first battery are connected; the switch assembly is arranged between the first unidirectional conduction assembly and the third unidirectional conduction assembly, and between the second field effect tube and the fourth field effect tube; the switch assembly cuts off the connection between the power ground and the first signal ground according to the second control signal; the second field effect transistor is communicated with a first signal ground and a first voltage input end of the voltage bootstrap chip according to a first control signal, and the third field effect transistor is communicated with a first capacitor end of the voltage bootstrap chip and a first voltage output end of the voltage bootstrap chip according to a third control signal, so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to charge the first battery; the weak energy collection threshold is reduced and the energy collection efficiency is improved.
Description
Technical Field
The application belongs to the field of weak energy collection, and particularly relates to a voltage bootstrap chip, a weak light collection circuit, equipment and a control method thereof.
Background
In the field of weak energy collection, the energy collection efficiency is very low, for example, a weak light collection circuit is used, the light plate cannot reach an ideal design voltage under the condition of insufficient light, a high-voltage battery cannot be charged, and the energy provided by the light plate lower than the voltage part of the battery is wasted.
Therefore, the weak light collection circuit has the defects that the energy lower than the voltage of the battery cannot be collected, so that the threshold value of weak energy collection is high and the energy collection efficiency is low.
Disclosure of Invention
The application provides a voltage bootstrap chip, a weak light acquisition circuit, equipment and a control method thereof, and aims to solve the problems of high threshold value and low energy acquisition efficiency of weak energy acquisition in the prior art.
The voltage bootstrap chip is connected with the first optical energy acquisition assembly, the first energy storage assembly, the second energy storage assembly and the first battery; the voltage bootstrap chip comprises a switch component, a first unidirectional conduction component, a second unidirectional conduction component, a third unidirectional conduction component, a second field effect tube, a third field effect tube and a fourth field effect tube;
the grid of second field effect transistor constitutes jointly the first control end of voltage bootstrap chip, the grid of third field effect transistor constitutes jointly with the grid of fourth field effect transistor the second control end of voltage bootstrap chip, the control end of switch module does the third control end of voltage bootstrap chip, the drain electrode of third field effect transistor, the negative pole of first one-way conduction subassembly and the positive pole of second one-way conduction subassembly constitute jointly the first electric capacity end of voltage bootstrap chip, the source electrode of second field effect transistor and the positive pole of first one-way conduction subassembly constitute jointly the first voltage input end of voltage bootstrap chip, the drain electrode of second field effect transistor constitute jointly with the first input and output end of switch module the analog ground end of voltage bootstrap chip, the second input and output end of switch module and the drain electrode of fourth field effect transistor constitute jointly the power supply of voltage bootstrap chip A source electrode of the fourth field effect transistor and a source electrode of the third field effect transistor jointly form a first voltage output end of the voltage bootstrap chip, a cathode of the second unidirectional conducting component and an anode of the third unidirectional conducting component jointly form a second capacitor end of the voltage bootstrap chip, and a cathode of the third unidirectional conducting component is an output end of the voltage bootstrap chip;
the positive electrode of the first optical energy acquisition assembly is connected with a first voltage input end of the voltage bootstrap chip, the first end of the first energy storage assembly is connected with a first capacitor end of the voltage bootstrap chip, the first end of the second energy storage assembly is connected with a second capacitor end of the voltage bootstrap chip, the second end of the second energy storage assembly is connected with a first voltage output end of the voltage bootstrap chip, the second end of the first energy storage assembly and the analog ground end of the voltage bootstrap chip are connected in common to a first signal ground, the output end of the voltage bootstrap chip is connected with the positive electrode of the first battery, and the negative electrode of the first battery, the power supply ground end of the voltage bootstrap chip and the negative electrode of the first optical energy acquisition assembly are connected in common to a power supply ground;
the first optical energy collection assembly is configured to generate a first voltage from received optical energy; the first unidirectional conducting component and the second unidirectional conducting component are both configured to conduct the first voltage unidirectionally; the first energy storage assembly and the second energy storage assembly are both configured to be charged according to the first voltage; the switch assembly is configured to switch off the connection between the power ground and the first signal ground according to a second control signal; the second field effect transistor is communicated with a first signal ground and a first voltage input end of the voltage bootstrap chip according to a first control signal, and the third field effect transistor is communicated with a first capacitor end of the voltage bootstrap chip and a first voltage output end of the voltage bootstrap chip according to a third control signal so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to charge the first battery through the third one-way conduction assembly.
In one embodiment, the switching component is a first depletion mode field effect transistor;
the grid electrode of the first depletion type field effect transistor is the control end of the switch component, the drain electrode of the first depletion type field effect transistor is the first input and output end of the switch component, and the source electrode of the first depletion type field effect transistor is the second input and output end of the switch component.
In one embodiment, the fourth fet is a depletion fet.
In one embodiment, the first unidirectional conducting component is a first diode, the second unidirectional conducting component is a second diode, and the third unidirectional conducting component is a third diode.
The present application further provides a method for controlling a voltage bootstrap chip, including:
step A1: the first voltage output by the first optical energy acquisition component is conducted through the switch component so that the analog ground end of the voltage bootstrap chip is connected with a power ground; the first energy storage assembly is charged according to the first voltage conducted by the first unidirectional conduction assembly and generates a first charging voltage; conducting through a fourth field effect transistor to enable the second energy storage assembly to be charged according to the first voltage conducted by the second one-way conduction assembly in the one-way direction and generate a second charging voltage;
step A2: the voltage bootstrap chip works according to the first voltage which is unidirectionally conducted by the first unidirectional conducting component;
step A3: inputting a second control signal through a second control end of the voltage bootstrap chip to control the switch component to be switched off so as to disconnect the analog ground end of the voltage bootstrap chip from the power ground; controlling a first control end of the voltage bootstrap chip to input a first control signal so that the electric potential of a first signal ground is equal to the electric potential of the anode of the first optical energy acquisition assembly, the electric potential of a second end of the first energy storage assembly is equal to the electric potential of the anode of the first optical energy acquisition assembly, the voltage of the first end of the first energy storage assembly is the sum of the first voltage and the first charging voltage, and the first control signal is at a low level; controlling a third control terminal of the voltage bootstrap chip to input a third control signal, so that a potential of a second terminal of the second energy storage component is equal to a potential of a first capacitor terminal of the voltage bootstrap chip, a potential of a second terminal of the second energy storage component is equal to a potential of a first terminal of the first energy storage component, so that a voltage of the first terminal of the second energy storage component is equal to a sum of the first voltage, the first charging voltage and the second charging voltage, and the third control signal is at a high level; the third unidirectional conducting assembly conducts the voltage of the first end of the second energy storage assembly in a unidirectional mode so as to charge the first battery.
The application also provides a low-light collecting device, is connected with first battery, including first light energy collection subassembly, first energy storage subassembly, second energy storage subassembly, first one-way subassembly that switches on, the one-way subassembly that switches on of second, third one-way subassembly and as above-mentioned voltage bootstrapping chip.
In one embodiment, the first optical energy collection assembly includes a first optical energy panel.
In one embodiment, the first energy storage element is a first capacitor, and the second energy storage element is a second capacitor.
The application also provides a weak light acquisition circuit which is connected with the first battery and comprises a microprocessor, a switch assembly, a first light energy acquisition assembly, a first energy storage assembly, a second energy storage assembly, a first one-way conduction assembly, a second one-way conduction assembly and a third one-way conduction assembly;
the first optical energy collection assembly is configured to generate a first voltage from received optical energy;
the first unidirectional conduction assembly is connected with the first optical energy acquisition assembly and is configured to conduct the first voltage in a unidirectional mode;
the second unidirectional conducting component is connected with the first unidirectional conducting component and is configured to conduct the first voltage in a unidirectional way;
the first energy storage component is configured to be charged according to the first voltage;
the second energy storage assembly is connected with the second unidirectional conducting assembly and is configured to be charged according to the first voltage;
the switch assembly is connected with the first optical energy acquisition assembly and is configured to switch off the connection between a power supply ground and a first signal ground according to a second control signal;
the microprocessor is provided with a first input/output end connected with the anode of the first optical energy acquisition assembly and the first unidirectional conduction assembly, a second input/output end connected with the switch assembly, a third input/output end connected with the second energy storage assembly, a power end connected with the first energy storage assembly, the first unidirectional conduction assembly and the second unidirectional conduction assembly, and a grounding end connected with the first energy storage assembly and the switch assembly in a first signal ground in common, and is configured to generate the second control signal and generate the first control signal so that the first signal ground is connected with the first input/output end of the microprocessor, and generate the third control signal so that the power end of the microprocessor is connected with the third input/output end of the microprocessor, so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to enable the first electrical connection through the third unidirectional conduction assembly The battery is charged.
In one embodiment, the first optical energy collecting element is a second optical energy plate, the first energy storing element is a third capacitor, the second energy storing element is a fourth capacitor, the second unidirectional conducting element is a fourth diode, the third unidirectional conducting element is a fifth diode, and the first unidirectional conducting element is a seventh diode.
In one embodiment, the switch assembly comprises a second depletion mode field effect transistor and a first resistor;
the grid electrode of the second depletion type field effect transistor and the first end of the first resistor jointly form the control end of the switch component, the drain electrode of the second depletion type field effect transistor is the first input and output end of the switch component, and the source electrode of the second depletion type field effect transistor and the second end of the first resistor jointly form the second input and output end of the switch component.
In one embodiment, the switch assembly comprises a first triode, a second triode, a sixth diode, a second resistor and a third resistor;
the emitter of the first triode is the power supply end of the switch assembly, the base of the first triode is connected with the cathode of the sixth diode and the first end of the third resistor, the collector of the first triode is connected with the first end of the second resistor, the anode of the sixth diode is the control end of the switch assembly, the second end of the second resistor is connected with the base of the second triode, the emitter of the second triode and the second end of the third resistor jointly form the second input and output end of the switch assembly, and the collector of the second triode is the first input and output end of the switch assembly.
The application also provides a control method of the weak light collection circuit, which comprises the following steps:
step B1: a first voltage output by the first optical energy collection assembly; the grounding end of the microprocessor is connected with a power ground through the conduction of the switch assembly; the first energy storage assembly is charged according to the first voltage conducted by the first unidirectional conduction assembly and generates a first charging voltage; a third input/output end of the microprocessor is at a low level so that the second energy storage assembly is charged according to the first voltage of the second unidirectional conduction assembly in unidirectional conduction and generates a second charging voltage;
step B2, the microprocessor works according to the first voltage of the first unidirectional conducting component unidirectional conducting;
step B3: a second control signal is input through a second input/output end of the microprocessor to control the switch component to be switched off so as to disconnect the grounding end of the microprocessor from a power ground; controlling a first input/output end of the microprocessor to input a first control signal so that the potential of a first signal ground is equal to the potential of the anode of the first optical energy acquisition assembly, the potential of a second end of the first energy storage assembly is equal to the potential of the anode of the first optical energy acquisition assembly, the voltage of a first end of the first energy storage assembly is the sum of the first voltage and the first charging voltage, and the first control signal is at a low level; controlling a third input/output end of the microprocessor to input a third control signal, so that the potential of a second end of the second energy storage component is equal to the potential of a power supply end of the microprocessor, the potential of the second end of the second energy storage component is equal to the potential of a first end of the first energy storage component, so that the voltage of the first end of the second energy storage component is equal to the sum of the first voltage, the first charging voltage and the second charging voltage, and the third control signal is at a high level; the third unidirectional conducting assembly conducts the voltage of the first end of the second energy storage assembly in a unidirectional mode so as to charge the first battery.
The beneficial effect that technical scheme that this application provided brought is: as can be seen from the above application, the light source is connected with the first light energy collecting assembly, the first energy storage assembly, the second energy storage assembly and the first battery, and comprises a switch assembly, a first one-way conduction assembly, a third one-way conduction assembly, a second field effect transistor, a third field effect transistor and a fourth field effect transistor; the first light energy collecting assembly generates a first voltage according to the received light energy; the first unidirectional conduction assembly and the second unidirectional conduction assembly conduct first voltage in a unidirectional mode; the switch assembly cuts off the connection between the power ground and the first signal ground according to the second control signal; the second field effect transistor is communicated with a first signal ground and a first voltage input end of the voltage bootstrap chip according to a first control signal, and the third field effect transistor is communicated with a first capacitor end of the voltage bootstrap chip and a first voltage output end of the voltage bootstrap chip according to a third control signal, so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to charge the first battery through the third one-way conduction assembly; the first light energy collecting assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to realize triple voltage bootstrap, so that the threshold value of weak energy collection is reduced, and the energy collection efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of a voltage bootstrap chip according to an embodiment of the present application;
fig. 2 is another block structure diagram of a voltage bootstrap chip provided in the embodiment of the present application;
fig. 3 is a schematic circuit structure diagram of a voltage bootstrap chip according to an embodiment of the present application;
fig. 4 is a block diagram of a weak light collection device according to an embodiment of the present disclosure;
fig. 5 is a diagram of an exemplary circuit structure of a weak light collection device according to an embodiment of the present application;
fig. 6 is a block diagram of a weak light collection circuit according to an embodiment of the present disclosure;
fig. 7 is a circuit diagram of an example of a weak light collection circuit provided in an embodiment of the present application;
fig. 8 is a circuit diagram of another example of a weak light collection circuit according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Fig. 1 shows a module structure of a voltage bootstrap chip of a weak light collection device provided in an embodiment of the present application, and for convenience of description, only parts related to the embodiment of the present application are shown, which are detailed as follows:
a voltage bootstrap chip 01 is connected with a first optical energy acquisition component 02, a first energy storage component 03, a second energy storage component 04 and a first battery 08; the voltage bootstrap chip 01 includes a switch component 011, a first unidirectional conducting component 05, a second unidirectional conducting component 06, a third unidirectional conducting component 07, a second field effect transistor M2, a third field effect transistor M3 and a fourth field effect transistor M4.
Wherein the gate of the second fet M2 jointly forms the first control terminal a of the voltage bootstrap chip 01, the gate of the third fet M3 and the gate of the fourth fet M4 jointly form the second control terminal B of the voltage bootstrap chip 01, the control terminal of the switch assembly 011 is the third control terminal C of the voltage bootstrap chip 01, the drain of the third fet M3, the cathode of the first unidirectional conducting assembly 05 and the anode of the second unidirectional conducting assembly 06 jointly form the first capacitor terminal PC1 of the voltage bootstrap chip 01, the source of the second fet M2 and the anode of the first unidirectional conducting assembly 05 jointly form the first voltage input terminal P1.0 of the voltage bootstrap chip 01, the drain of the second fet M2 and the first input/output terminal of the switch assembly 011 jointly form the analog ground terminal AGND of the voltage bootstrap chip 01, the second input/output terminal of the switch assembly 011 and the drain of the fourth fet M4 jointly form the power ground terminal GND of the voltage bootstrap chip 01, the source of the fourth field-effect transistor M4 and the source of the third field-effect transistor M3 together form a first voltage output terminal P2.0 of the voltage bootstrap chip 01, the cathode of the second unidirectional conducting component 06 and the anode of the third unidirectional conducting component 07 together form a second capacitor terminal PC2 of the voltage bootstrap chip 01, and the cathode of the third unidirectional conducting component 07 is an output terminal OUT of the voltage bootstrap chip.
The positive electrode of the first optical energy collecting component 02 is connected with a first voltage input end P1.0 of the voltage bootstrap chip 01, the first end of the first energy storing component 03 is connected with a first capacitor end PC1 of the voltage bootstrap chip 01, the first end of the second energy storing component 04 is connected with a second capacitor end PC2 of the voltage bootstrap chip 01, the second end of the second energy storing component 04 is connected with a first voltage output end P2.0 of the voltage bootstrap chip 01, the second end of the first energy storing component 03 and the analog ground end AGND of the voltage bootstrap chip 01 are connected to a first signal ground in common, the output end OUT of the voltage bootstrap chip 01 is connected with the positive electrode of the first battery 08, and the negative electrode of the first battery 08, the power ground end GND of the voltage bootstrap chip 01 and the negative electrode of the first optical energy collecting component 02 are connected to a power ground in common.
The first optical energy collection assembly 02 is configured to generate a first voltage from the received optical energy; the first unidirectional conducting component 05 and the second unidirectional conducting component 06 are both configured to conduct a first voltage unidirectionally; the first energy storage assembly 03 and the second energy storage assembly 04 are both configured to be charged according to a first voltage; the switch assembly 011 is configured to switch off the connection of the power ground and the first signal ground according to a second control signal; the second field effect transistor M2 is connected to the first signal ground and the first voltage input terminal P1.0 of the voltage bootstrap chip 01 according to the first control signal, and the third field effect transistor M3 is connected to the first capacitor terminal PC1 of the voltage bootstrap chip 01 and the first voltage output terminal P2.0 of the voltage bootstrap chip 01 according to the third control signal, so that the first optical energy collecting assembly 02, the first energy storage assembly 03 and the second energy storage assembly 04 are sequentially connected in series to charge the first battery 08 through the third unidirectional conducting assembly 07.
As shown in fig. 2, the voltage bootstrap chip 01 further includes a first field effect transistor M1; the gate of the first field-effect transistor M1 and the gate of the second field-effect transistor M2 together form a first control end a of the voltage bootstrap chip 01, the drain of the first field-effect transistor M1, the drain of the third field-effect transistor M3, the cathode of the first unidirectional conducting component 05, and the anode of the second unidirectional conducting component 06 together form a first capacitor end PC1 of the voltage bootstrap chip 01, and the source of the first field-effect transistor M1, the source of the second field-effect transistor M2, and the anode of the first unidirectional conducting component 05 together form a first voltage input end P1.0 of the voltage bootstrap chip 01.
As shown in fig. 3, the switching component 011 is a first depletion mode fet JF 1. The first unidirectional device 05 is a first diode D1, the second unidirectional device 06 is a second diode D2, and the third unidirectional device 07 is a third diode D3.
The gate of the first depletion type field effect transistor JF1 is the control end of the switch component 011, the drain of the first depletion type field effect transistor JF1 is the first input/output end of the switch component 011, and the source of the first depletion type field effect transistor JF1 is the second input/output end of the switch component 011.
By way of example and not limitation, the fourth fet M4 is a depletion fet.
When the voltage bootstrap chip 01 is not in operation, the switch assembly 011 and the fourth field effect transistor M4 are both in a conducting state.
The embodiment of the present application further provides a method for controlling the voltage bootstrap chip 01 shown in fig. 2, including:
step A1: the first voltage output by the first optical energy collecting component is conducted through the switch component 011, so that the analog ground end GND of the voltage bootstrap chip 01 is connected with the first energy storage component 03 of the power supply ground to charge according to the conducted first voltage of the first unidirectional conducting component 05 and generate a first charging voltage; the second energy storage assembly 04 is charged according to the first voltage of the second unidirectional conducting assembly 06 by conducting through the fourth field effect transistor M4, and generates a second charging voltage.
Step A2: the voltage bootstrap chip 01 operates according to the first voltage of the first unidirectional conducting component 05.
Step A3: inputting a second control signal through a second control terminal B of the voltage bootstrap chip 01 to control the switch component 011 to turn off, so that the analog ground terminal AGND of the voltage bootstrap chip 01 is disconnected from the power ground; a first control end A of the control voltage bootstrap chip 01 inputs a first control signal, so that the electric potential of a first signal ground is equal to the electric potential of the anode of the first optical energy acquisition component 02, the electric potential of a second end of the first energy storage component 03 is equal to the electric potential of the anode of the first optical energy acquisition component 02, the voltage of a first end of the first energy storage component 03 is the sum of a first voltage and a first charging voltage, and the first control signal is at a low level; a third control signal is input to the third control terminal C of the voltage bootstrap chip 01, so that the potential of the second terminal of the second energy storage component 04 is equal to the potential of the first capacitor terminal of the voltage bootstrap chip 01, the potential of the second terminal of the second energy storage component 04 is equal to the potential of the first terminal of the first energy storage component 03, so that the voltage of the first terminal of the second energy storage component 004 is equal to the sum of the first voltage, the first charging voltage and the second charging voltage, and the third control signal is at a high level; the third unidirectional conducting component 07 unidirectionally conducts the voltage at the first end of the second energy storage component 04 to charge the first battery 08.
Based on the voltage bootstrap chip 01, an embodiment of the present application further provides a weak light collection device, as shown in fig. 4, connected to the first battery 08, and including a first optical energy collection component 02, a first energy storage component 03, a second energy storage component 04, and the voltage bootstrap chip 01 as described above.
Fig. 5 shows an exemplary circuit structure of the weak light collection device provided in the embodiment of the present application, and for convenience of description, only the parts related to the embodiment of the present application are shown, and the details are as follows:
the first optical energy collection assembly 02 includes a first optical energy panel Z1. The first energy storage element 03 is a first capacitor C1, and the second energy storage element 04 is a second capacitor C2.
Fig. 6 shows a module structure of a weak light collection circuit provided in an embodiment of the present application, and for convenience of description, only a part related to the embodiment of the present application is shown, and details are as follows:
a weak light collection circuit is connected with a first battery 09 and comprises a microprocessor U1, a switch assembly 10, a first light energy collection assembly 11, a first energy storage assembly 12, a second energy storage assembly 13, a first one-way conduction assembly 16, a second one-way conduction assembly 14 and a third one-way conduction assembly 15.
The first optical energy collection assembly 11 is configured to generate a first voltage from the received optical energy; the first unidirectional conduction assembly 16 is connected with the first optical energy acquisition assembly 11 and is configured to conduct a first voltage in a unidirectional mode; a second unidirectional conducting component 14 connected to the first unidirectional conducting component 16 and configured to conduct the first voltage unidirectionally; the first energy storage assembly 12 is configured to be charged according to a first supply voltage; the second energy storage assembly 13 is connected with the second unidirectional conducting assembly 14 and is configured to be charged according to a first voltage; the switch assembly 10 is connected with the first optical energy acquisition assembly 11 and is configured to switch off the connection between the power ground and the first signal ground according to a second control signal; a microprocessor U1 having a first input/output end P1.0 connected with the anode of the first optical energy collecting component 11 and the first unidirectional conducting component 16, a second input/output end P2.0 connected with the switch component 10, a third input/output end P3.0 connected with the second energy storing component 13, a power end VCC connected with the first energy storing component 12, the first unidirectional conducting component 16 and the second unidirectional conducting component 14, and a ground end GND connected with the first energy storing component 12 and the switch component 10 in common to a first signal ground, configured to generate a second control signal, and generates a first control signal to couple the first signal ground to the first input-output terminal P1.0 of the microprocessor U1, and generates a third control signal to connect the power supply terminal VCC of the microprocessor U1 to the third input/output terminal P3.0 of the microprocessor U1, so that the first optical energy collecting assembly 11, the first energy storage assembly 12 and the second energy storage assembly 13 are sequentially connected in series to charge the first battery 09 through the third unidirectional conducting assembly 15.
Specifically, the power supply terminal VCC of the microprocessor U1 is connected to the first end of the first energy storage component 12, the cathode of the first unidirectional conducting component 16, and the anode of the second unidirectional conducting component 14, the ground terminal GND of the microprocessor U1, the second end of the first energy storage component 12, and the first input/output terminal of the switch component 10 are commonly connected to the first signal ground, the first input/output terminal P1.0 of the microprocessor U1 is connected to the anode of the first optical energy collecting component 11 and the anode of the first unidirectional conducting component 16, the second input/output terminal P2.0 of the microprocessor U1 is connected to the control terminal of the switch component 10, the third input/output terminal P3.0 of the microprocessor U1 is connected to the second end of the second energy storage component 13, the first end of the second energy storage component 13 is connected to the cathode of the second unidirectional conducting component 14 and the anode of the third unidirectional conducting component 15, the cathode of the third unidirectional conducting component 15 is connected to the anode of the first battery 09, the cathode of the first battery 09, the cathode of the first optical energy collection assembly 11, and the second input/output end of the switch assembly 10 are commonly connected to a power ground.
Three times of voltage doubling bootstrap is realized through the serial connection of the first light energy collecting assembly 11, the first energy storing assembly 12 and the second energy storing assembly 13 in sequence, the threshold value of weak energy collection is reduced, and the energy collecting efficiency is improved.
Fig. 7 shows an exemplary circuit structure of a weak light collection circuit provided in an embodiment of the present application, and fig. 7 shows another exemplary circuit structure of a weak light collection circuit provided in an embodiment of the present application, where for convenience of description, only parts related to the embodiment of the present application are shown, and details are as follows:
the first optical energy collecting assembly 11 is a second optical energy plate Z2, the first energy storing assembly 12 is a third capacitor C3, the second energy storing assembly 13 is a fourth capacitor C4, the second unidirectional conducting assembly 14 is a fourth diode D4, the third unidirectional conducting assembly 15 is a fifth diode D5, and the first unidirectional conducting assembly is a seventh diode D7.
The switching assembly 10 includes a second depletion mode field effect transistor JF2 and a first resistor R1.
The gate of the second depletion type field effect transistor JF2 and the first end of the first resistor R1 together form a control end of the switch assembly 10, the drain of the second depletion type field effect transistor JF2 is the first input/output end of the switch assembly 10, and the source of the second depletion type field effect transistor JF2 and the second end of the first resistor R1 together form the second input/output end of the switch assembly 10.
The second depletion type field effect transistor JF2 is used through switching electricity, the circuit is simplified, and the size of the weak light acquisition circuit is reduced.
The switching assembly 10 includes a first transistor Q1, a second transistor Q2, a sixth diode D6, a second resistor R2, and a third resistor R3.
An emitter of the first transistor Q1 is a power supply terminal of the switching assembly 10, a base of the first transistor Q1 is connected to a cathode of the sixth diode D6 and a first end of the third resistor R3, a collector of the first transistor Q1 is connected to a first end of the second resistor R2, an anode of the sixth diode D6 is a control terminal of the switching assembly 10, a second end of the second resistor R2 is connected to a base of the second transistor Q2, an emitter of the second transistor Q2 and a second end of the third resistor R3 jointly form a second input/output terminal of the switching assembly 10, and a collector of the second transistor Q2 is a first input/output terminal of the switching assembly 10.
The first triode Q1 and the second triode Q2 are electrically used through switching, and hardware cost is reduced.
The embodiment of the present application further provides a method for controlling a weak light collection circuit shown in fig. 6, including:
step B1: a first voltage output by the first optical energy collection assembly 11; the switch assembly 10 is turned on to connect the ground terminal GND of the microprocessor U1 to the power ground; the first energy storage assembly 12 charges according to the first voltage conducted by the first unidirectional conducting assembly 16 and generates a first charging voltage; the third input/output terminal P3.0 of the microprocessor U1 is at a low level, so that the second energy storage device 13 charges according to the first voltage unidirectionally conducted by the second unidirectionally conducted device 14 and generates a second charging voltage.
Step B2: the microprocessor U1 operates according to the first voltage at which the first unidirectional flux component 16 is unidirectional.
Step B3: a second control signal is inputted through a second input/output terminal P2.0 of the microprocessor U1 to control the switch assembly 10 to turn off, so that the ground terminal GND of the microprocessor U1 is disconnected from the power ground; a first input/output end P1.0 of the microprocessor U1 is controlled to input a first control signal, so that the potential of a first signal ground is equal to the potential of the anode of the first optical energy acquisition component 11, the potential of the second end of the first energy storage component 12 is equal to the potential of the anode of the first optical energy acquisition component 11, the voltage of the first end of the first energy storage component 12 is the sum of a first voltage and a first charging voltage, and the first control signal is at a low level; the third input/output terminal P3.0 of the microprocessor U1 is controlled to input a third control signal, so that the potential of the second terminal of the second energy storage device 13 is equal to the potential of the power source terminal of the microprocessor U1, the potential of the second terminal of the second energy storage device 13 is equal to the potential of the first terminal of the first energy storage device 12, so that the voltage of the first terminal of the second energy storage device is equal to the sum of the first voltage, the first charging voltage and the second charging voltage, and the third control signal is at a high level; the third unidirectional conducting component 15 unidirectionally conducts the voltage at the first end of the second energy storage component 13 to charge the first battery 09.
In summary, the embodiment of the present application is connected to the first optical energy collecting assembly, the first energy storing assembly, the second energy storing assembly and the first battery, and includes a switch assembly, a first unidirectional conducting assembly, a third unidirectional conducting assembly, a second field effect transistor, a third field effect transistor and a fourth field effect transistor; the first light energy collecting assembly generates a first voltage according to the received light energy; the first unidirectional conduction assembly and the second unidirectional conduction assembly conduct first voltage in a unidirectional mode; the switch assembly cuts off the connection between the power ground and the first signal ground according to the second control signal; the second field effect transistor is communicated with a first signal ground and a first voltage input end of the voltage bootstrap chip according to a first control signal, and the third field effect transistor is communicated with a first capacitor end of the voltage bootstrap chip and a first voltage output end of the voltage bootstrap chip according to a third control signal, so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to charge the first battery through the third one-way conduction assembly; the first light energy collecting assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to realize triple voltage bootstrap, so that the threshold value of weak energy collection is reduced, and the energy collection efficiency is improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (13)
1. A voltage bootstrap chip is characterized in that the voltage bootstrap chip is connected with a first optical energy acquisition assembly, a first energy storage assembly, a second energy storage assembly and a first battery; the voltage bootstrap chip comprises a switch component, a first unidirectional conduction component, a second unidirectional conduction component, a third unidirectional conduction component, a second field effect tube, a third field effect tube and a fourth field effect tube;
the grid of second field effect transistor constitutes jointly the first control end of voltage bootstrap chip, the grid of third field effect transistor constitutes jointly with the grid of fourth field effect transistor the second control end of voltage bootstrap chip, the control end of switch module does the third control end of voltage bootstrap chip, the drain electrode of third field effect transistor, the negative pole of first one-way conduction subassembly and the positive pole of second one-way conduction subassembly constitute jointly the first electric capacity end of voltage bootstrap chip, the source electrode of second field effect transistor and the positive pole of first one-way conduction subassembly constitute jointly the first voltage input end of voltage bootstrap chip, the drain electrode of second field effect transistor constitute jointly with the first input and output end of switch module the analog ground end of voltage bootstrap chip, the second input and output end of switch module and the drain electrode of fourth field effect transistor constitute jointly the power supply of voltage bootstrap chip A source electrode of the fourth field effect transistor and a source electrode of the third field effect transistor jointly form a first voltage output end of the voltage bootstrap chip, a cathode of the second unidirectional conducting component and an anode of the third unidirectional conducting component jointly form a second capacitor end of the voltage bootstrap chip, and a cathode of the third unidirectional conducting component is an output end of the voltage bootstrap chip;
the positive electrode of the first optical energy acquisition assembly is connected with a first voltage input end of the voltage bootstrap chip, the first end of the first energy storage assembly is connected with a first capacitor end of the voltage bootstrap chip, the first end of the second energy storage assembly is connected with a second capacitor end of the voltage bootstrap chip, the second end of the second energy storage assembly is connected with a first voltage output end of the voltage bootstrap chip, the second end of the first energy storage assembly and the analog ground end of the voltage bootstrap chip are connected in common to a first signal ground, the output end of the voltage bootstrap chip is connected with the positive electrode of the first battery, and the negative electrode of the first battery, the power supply ground end of the voltage bootstrap chip and the negative electrode of the first optical energy acquisition assembly are connected in common to a power supply ground;
the first optical energy collection assembly is configured to generate a first voltage from received optical energy; the first unidirectional conducting component and the second unidirectional conducting component are both configured to conduct the first voltage unidirectionally; the first energy storage assembly and the second energy storage assembly are both configured to be charged according to the first voltage; the switch assembly is configured to switch off the connection between the power ground and the first signal ground according to a second control signal; the second field effect transistor is communicated with a first signal ground and a first voltage input end of the voltage bootstrap chip according to a first control signal, and the third field effect transistor is communicated with a first capacitor end of the voltage bootstrap chip and a first voltage output end of the voltage bootstrap chip according to a third control signal so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to charge the first battery through the third one-way conduction assembly.
2. The voltage bootstrap chip of claim 1, wherein the switch component is a first depletion mode field effect transistor;
the grid electrode of the first depletion type field effect transistor is the control end of the switch component, the drain electrode of the first depletion type field effect transistor is the first input and output end of the switch component, and the source electrode of the first depletion type field effect transistor is the second input and output end of the switch component.
3. The voltage bootstrap chip of claim 1, wherein the fourth field effect transistor is a depletion mode field effect transistor.
4. The voltage bootstrap chip of claim 1, wherein the first one-way pass component is a first diode, the second one-way pass component is a second diode, and the third one-way pass component is a third diode.
5. A method for controlling a voltage bootstrap chip as recited in claim 1, characterized by comprising:
step A1: the first voltage output by the first optical energy acquisition component is conducted through the switch component so that the analog ground end of the voltage bootstrap chip is connected with a power ground; the first energy storage assembly is charged according to the first voltage conducted by the first unidirectional conduction assembly and generates a first charging voltage; conducting through a fourth field effect transistor to enable the second energy storage assembly to be charged according to the first voltage conducted by the second one-way conduction assembly in the one-way direction and generate a second charging voltage;
step A2: the voltage bootstrap chip works according to the first voltage which is unidirectionally conducted by the first unidirectional conducting component;
step A3: inputting a second control signal through a second control end of the voltage bootstrap chip to control the switch component to be switched off so as to disconnect the analog ground end of the voltage bootstrap chip from the power ground; controlling a first control end of the voltage bootstrap chip to input a first control signal so that the electric potential of a first signal ground is equal to the electric potential of the anode of the first optical energy acquisition assembly, the electric potential of a second end of the first energy storage assembly is equal to the electric potential of the anode of the first optical energy acquisition assembly, the voltage of the first end of the first energy storage assembly is the sum of the first voltage and the first charging voltage, and the first control signal is at a low level; controlling a third control terminal of the voltage bootstrap chip to input a third control signal, so that a potential of a second terminal of the second energy storage component is equal to a potential of a first capacitor terminal of the voltage bootstrap chip, a potential of a second terminal of the second energy storage component is equal to a potential of a first terminal of the first energy storage component, so that a voltage of the first terminal of the second energy storage component is equal to a sum of the first voltage, the first charging voltage and the second charging voltage, and the third control signal is at a high level; the third unidirectional conducting assembly conducts the voltage of the first end of the second energy storage assembly in a unidirectional mode so as to charge the first battery.
6. A weak light collection device connected with a first battery, comprising a first light energy collection component, a first energy storage component, a second energy storage component and the voltage bootstrap chip of any one of claims 1 to 4.
7. The low level light collection device of claim 6 wherein the first light energy collection assembly comprises a first light energy panel.
8. The dim light collecting device according to claim 6, wherein said first energy storage component is a first capacitor and said second energy storage component is a second capacitor.
9. A weak light acquisition circuit is connected with a first battery and is characterized by comprising a microprocessor, a switch assembly, a first light energy acquisition assembly, a first energy storage assembly, a second energy storage assembly, a first one-way conduction assembly, a second one-way conduction assembly and a third one-way conduction assembly;
the first optical energy collection assembly is configured to generate a first voltage from received optical energy;
the first unidirectional conduction assembly is connected with the first optical energy acquisition assembly and is configured to conduct the first voltage in a unidirectional mode;
the second unidirectional conducting component is connected with the first unidirectional conducting component and is configured to conduct the first voltage in a unidirectional way;
the first energy storage component is configured to be charged according to the first voltage;
the second energy storage assembly is connected with the second unidirectional conducting assembly and is configured to be charged according to the first voltage;
the switch assembly is connected with the first optical energy acquisition assembly and is configured to switch off the connection between a power supply ground and a first signal ground according to a second control signal;
the microprocessor is provided with a first input/output end connected with the anode of the first optical energy acquisition assembly and the first unidirectional conduction assembly, a second input/output end connected with the switch assembly, a third input/output end connected with the second energy storage assembly, a power end connected with the first energy storage assembly, the first unidirectional conduction assembly and the second unidirectional conduction assembly, and a grounding end connected with the first energy storage assembly and the switch assembly in a first signal ground in common, and is configured to generate the second control signal and generate the first control signal so that the first signal ground is connected with the first input/output end of the microprocessor, and generate the third control signal so that the power end of the microprocessor is connected with the third input/output end of the microprocessor, so that the first optical energy acquisition assembly, the first energy storage assembly and the second energy storage assembly are sequentially connected in series to enable the first electrical connection through the third unidirectional conduction assembly The battery is charged.
10. The weak light collecting circuit according to claim 9, wherein the first light energy collecting element is a second light energy plate, the first energy storing element is a third capacitor, the second energy storing element is a fourth capacitor, the second unidirectional conducting element is a fourth diode, the third unidirectional conducting element is a fifth diode, and the first unidirectional conducting element is a seventh diode.
11. The weak light collection circuit of claim 9, wherein the switching component includes a second depletion mode field effect transistor and a first resistor;
the grid electrode of the second depletion type field effect transistor and the first end of the first resistor jointly form the control end of the switch component, the drain electrode of the second depletion type field effect transistor is the first input and output end of the switch component, and the source electrode of the second depletion type field effect transistor and the second end of the first resistor jointly form the second input and output end of the switch component.
12. The weak light collection circuit of claim 9, wherein the switch component comprises a first transistor, a second transistor, a sixth diode, a second resistor, and a third resistor;
the emitter of the first triode is the power supply end of the switch assembly, the base of the first triode is connected with the cathode of the sixth diode and the first end of the third resistor, the collector of the first triode is connected with the first end of the second resistor, the anode of the sixth diode is the control end of the switch assembly, the second end of the second resistor is connected with the base of the second triode, the emitter of the second triode and the second end of the third resistor jointly form the second input and output end of the switch assembly, and the collector of the second triode is the first input and output end of the switch assembly.
13. A method for controlling the weak light collection circuit according to claim 9, comprising:
step B1: a first voltage output by the first optical energy collection assembly; the grounding end of the microprocessor is connected with a power ground through the conduction of the switch assembly; the first energy storage assembly is charged according to the first voltage conducted by the first unidirectional conduction assembly and generates a first charging voltage; a third input/output end of the microprocessor is at a low level so that the second energy storage assembly is charged according to the first voltage of the second unidirectional conduction assembly in unidirectional conduction and generates a second charging voltage;
step B2, the microprocessor works according to the first voltage of the first unidirectional conducting component unidirectional conducting;
step B3: a second control signal is input through a second input/output end of the microprocessor to control the switch component to be switched off so as to disconnect the grounding end of the microprocessor from a power ground; controlling a first input/output end of the microprocessor to input a first control signal so that the potential of a first signal ground is equal to the potential of the anode of the first optical energy acquisition assembly, the potential of a second end of the first energy storage assembly is equal to the potential of the anode of the first optical energy acquisition assembly, the voltage of a first end of the first energy storage assembly is the sum of the first voltage and the first charging voltage, and the first control signal is at a low level; controlling a third input/output end of the microprocessor to input a third control signal, so that the potential of a second end of the second energy storage component is equal to the potential of a power supply end of the microprocessor, the potential of the second end of the second energy storage component is equal to the potential of a first end of the first energy storage component, so that the voltage of the first end of the second energy storage component is equal to the sum of the first voltage, the first charging voltage and the second charging voltage, and the third control signal is at a high level; the third unidirectional conducting assembly conducts the voltage of the first end of the second energy storage assembly in a unidirectional mode so as to charge the first battery.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2020/087598 WO2021217455A1 (en) | 2020-04-28 | 2020-04-28 | Voltage bootstrap chip, weak light collection circuit and device, and control method therefor |
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| CN111684681A CN111684681A (en) | 2020-09-18 |
| CN111684681B true CN111684681B (en) | 2022-03-11 |
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| WO2021217455A1 (en) | 2021-11-04 |
| CN111684681A (en) | 2020-09-18 |
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