Solar charging circuit and method, power supply device and equipment

Abstract

The invention relates to a solar charging circuit, a method, a power supply device and equipment, and the solar charging circuit carries out the boosting of a solar electric signal outputted by a solar panel through a boosting charging module under the control of a solar charging enabling end, and outputs a boosting charging signal to an electrochemical capacitor module. The electrochemical capacitor module charges an electrochemical container in the electrochemical capacitor module according to the boost charging signal so as to realize low-temperature charging, and the linear charging module charges the electrochemical container in the electrochemical capacitor module according to the battery temperature corresponding to the lithium battery under the control of the capacitor charging enable signal end. A battery charging signal is output to a lithium battery module based on a capacitor voltage signal provided by an electrochemical hybrid capacitor, so that the lithium battery module charges a lithium battery according to the battery charging signal, the lithium battery is charged by using the electric quantity stored by the electrochemical hybrid capacitor, and the energy of solar energy can be further utilized to a greater extent; and the endurance time of the battery is prolonged.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a solar charging circuit, method, power supply device and equipment. Background Technology

[0002] With the rapid development of batteries, lithium batteries are widely used in electronic products across various industries, bringing great convenience to people's lives, work, and studies.

[0003] For example, battery-powered cameras offer advantages such as easy installation, reduced wiring, and long battery life, making them popular with most users. However, due to differences in user installation environments, in high-traffic scenarios, such as those with heavy pedestrian or vehicular traffic, the battery depletes more quickly, significantly reducing the battery life by half. Generally, a battery life of over a month is acceptable to users, but when it falls below a month, frequent charging becomes a hassle.

[0004] Currently, to address the frequent charging issues mentioned above, products typically incorporate built-in solar charging panels to convert solar energy into electrical energy to charge lithium batteries. However, lithium batteries cannot be charged at low temperatures. Specifically, existing solar charging panels usually shut down the charging function to protect the battery when the temperature drops below 0 degrees Celsius. While this is a design feature to protect the battery, users don't understand the principle behind not charging at low temperatures and still experience anxiety about battery life as they watch the battery level steadily decrease. Summary of the Invention

[0005] In view of this, this application provides a solar charging circuit, method, power supply device and equipment to solve the problem in the prior art that the lithium battery cannot be charged by solar energy due to low temperature.

[0006] In a first aspect, embodiments of this application provide a solar charging circuit, including: a solar panel, a boost charging module, an electrochemical capacitor module, a linear charging module, and a lithium battery module;

[0007] The electrochemical capacitor module includes an electrochemical hybrid capacitor, and the lithium battery module includes a lithium battery.

[0008] The boost charging module is used to boost the solar electrical signal output by the solar panel under the control of the solar charging enable terminal, and output a boost charging signal.

[0009] The electrochemical capacitor module is used to charge the electrochemical hybrid capacitor according to the boost charging signal;

[0010] The linear charging module is used to output a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor, under the control of the capacitor charging enable signal terminal, according to the battery temperature corresponding to the lithium battery.

[0011] The lithium battery module is used to charge the lithium battery according to the battery charging signal.

[0012] Optionally, the linear charging module includes a linear charging chip and a transistor submodule;

[0013] The power input terminal of the transistor submodule is electrically connected to the power input terminal of the linear charging chip and the positive terminal of the electrochemical hybrid capacitor. The control input terminal of the transistor submodule is electrically connected to the capacitor charging enable signal terminal. The output terminal of the transistor submodule is electrically connected to the enable input terminal of the linear charging chip. The capacitor charging enable signal terminal is used to output a capacitor charging enable signal when the battery temperature is within a preset temperature range.

[0014] The battery output terminal of the linear charging chip is electrically connected to the positive terminal of the lithium battery module, and the battery output terminal is used to output the battery charging signal.

[0015] Optionally, the transistor submodule includes: a first transistor, a second transistor, a first resistor, a second resistor, and a third resistor;

[0016] The control terminal of the first transistor is electrically connected to the first terminal of the first resistor and the capacitor charging enable signal terminal. The first terminal of the first transistor is electrically connected to the control terminal of the second transistor and the second terminal of the second resistor. The second terminals of the first transistor, the first resistor, and the second transistor are all electrically connected to the reference ground of the solar charging circuit. The first terminal of the second resistor is electrically connected to the power input terminal of the linear charging chip. The first terminal of the second transistor is electrically connected to the enable input terminal of the linear charging chip through the third resistor.

[0017] Optionally, the boost charging module includes: a first inductor, a boost charging chip, a fourth resistor, a fifth resistor, and a first capacitor;

[0018] The first end of the first inductor is electrically connected to the output end of the solar panel and the power input end of the boost charging chip, the second end of the first inductor is electrically connected to the debugging input end of the boost charging chip, and the output end of the solar panel is used to output the solar electrical signal.

[0019] The enable terminal of the boost charging chip is electrically connected to the solar charging enable terminal. The output terminal of the boost charging chip is electrically connected to the first terminal of the fourth resistor, the first terminal of the first capacitor, and the input terminal of the electrochemical capacitor module. The resistance terminal of the boost charging chip is electrically connected to the second terminal of the fourth resistor and the first terminal of the fifth resistor. The ground terminal of the boost charging chip, the second terminal of the fifth resistor, and the second terminal of the first capacitor are all electrically connected to the reference ground of the solar charging circuit.

[0020] The output terminal of the boost charging chip is used to output the boost charging signal.

[0021] Optionally, the boost charging module further includes: a sixth resistor and a second capacitor;

[0022] The first end of the sixth resistor is electrically connected to the first end of the second capacitor, the first end of the first inductor, and the output end of the solar panel, and the second end of the sixth resistor is electrically connected to the second end of the second capacitor and the reference ground.

[0023] Optionally, the lithium battery module further includes a switching charging chip submodule, the input terminal of which is used to connect to a power adapter, and the battery transmission terminal of which is electrically connected to the positive terminal of the lithium battery.

[0024] The switching charging chip submodule is used to output a charging signal to the positive terminal of the lithium battery based on the power signal provided by the power adapter.

[0025] Optionally, the solar charging circuit may also include: a dual-input ideal diode module;

[0026] The first input terminal of the dual-input ideal diode module is electrically connected to the power supply output terminal of the switching charging chip submodule, and the second input terminal of the dual-input ideal diode module is electrically connected to the voltage output terminal of the electrochemical capacitor module.

[0027] The power supply output terminal of the switching charging chip submodule is used to output the battery voltage signal corresponding to the lithium battery;

[0028] The voltage output terminal of the electrochemical capacitor module is used to output the capacitor voltage signal;

[0029] The dual-input ideal diode module is used to compare the capacitor voltage signal and the battery voltage signal; if the capacitor voltage is greater than the battery voltage, a system power supply signal is output based on the capacitor voltage signal; if the capacitor voltage is less than the battery voltage, a system power supply signal is output based on the battery voltage signal; if the capacitor voltage is equal to the battery voltage, a system power supply signal is output based on either the capacitor voltage signal or the battery voltage signal, wherein the capacitor voltage is the voltage of the electrochemical hybrid capacitor and the battery voltage is the voltage of the lithium battery.

[0030] Secondly, embodiments of this application provide a power supply device that includes a solar charging circuit as described in any one of the first aspects of this application.

[0031] Thirdly, embodiments of this application provide a solar charging method, applied to a solar charging circuit as described in any one of the first aspects of this application, the method comprising:

[0032] Under the control of the solar charging enable terminal, the solar electrical signal output by the solar panel is boosted to output a boosted charging signal;

[0033] The electrochemical hybrid capacitor in the solar charging circuit is charged according to the boost charging signal;

[0034] Based on the battery temperature of the lithium battery, and under the control of the capacitor charging enable signal, a battery charging signal is output based on the capacitor voltage signal provided by the electrochemical hybrid capacitor.

[0035] The lithium battery is charged according to the battery charging signal.

[0036] Fourthly, embodiments of this application provide an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; the memory is used to store computer programs; and the processor is used to implement the steps of the solar charging method as described in any one of the third aspects of this application when executing the program stored in the memory.

[0037] The solar charging circuit, method, power supply device, and equipment provided in this application embodiment boost the solar electrical signal output from the solar panel through a boost charging module under the control of the solar charging enable terminal, and output a boost charging signal to the electrochemical capacitor module. This allows the electrochemical capacitor module to charge the electrochemical container contained within it according to the boost charging signal, thereby achieving low-temperature charging. Furthermore, a linear charging module, based on the battery temperature of the lithium battery in the lithium battery module and under the control of the capacitor charging enable signal terminal, outputs a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. This allows the lithium battery module to charge the lithium battery according to the battery charging signal, utilizing the stored charge in the electrochemical hybrid capacitor to charge the lithium battery. This maximizes the utilization of solar energy, extends battery life, and improves user experience. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0041] Figure 1 A structural block diagram of a solar charging circuit provided in an embodiment of this application;

[0042] Figure 2 A circuit structure diagram of a boost charging module provided for an optional embodiment of this application;

[0043] Figure 3 A schematic diagram of the circuit structure of a linear charging module provided as an example of this application;

[0044] Figure 4 A schematic diagram illustrating the connection between a switching charging chip submodule and a dual-input ideal diode module, as provided in an example of this application;

[0045] Figure 5 A schematic diagram of a solar charging circuit provided as an example of this application;

[0046] Figure 6 A schematic diagram of the circuit structure of a lithium battery module provided in an embodiment of this application;

[0047] Figure 7 This is a schematic flowchart illustrating the steps of a solar charging method provided in an embodiment of this application;

[0048] Figure 8 This is a schematic diagram of the structure of a power supply device provided in an embodiment of this application;

[0049] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0052] To address the issue of lithium batteries' inability to charge at low temperatures in existing technologies, this application provides a solar charging circuit, method, power supply device, and equipment. A boost charging module, under the control of the solar charging enable terminal, boosts the solar electrical signal output from the solar panel, outputting a boosted charging signal to the electrochemical capacitor module. This allows the electrochemical capacitor module to charge its contained electrochemical capacitors according to the boosted charging signal, achieving low-temperature charging. A linear charging module, based on the battery temperature of the lithium battery in the lithium battery module and under the control of the capacitor charging enable signal terminal, outputs a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. This allows the lithium battery module to charge its lithium battery according to the battery charging signal, utilizing the stored charge in the electrochemical hybrid capacitor to charge the lithium battery. This maximizes the utilization of solar energy, extends battery life, and improves user experience.

[0053] It should be noted that electrochemical hybrid capacitors (EHC), as asymmetric electrochemical capacitors, are a new type of energy storage element between supercapacitors and batteries. They have higher specific capacitance and specific energy than supercapacitors, and better power density than batteries. For example, lithium-ion capacitors (LIC) can be used as electrochemical hybrid capacitors in electrochemical capacitor modules. Based on the characteristics of lithium-ion capacitors, the charging temperature range of the device can be expanded by using lithium-ion capacitors to realize low-temperature charging methods.

[0054] Figure 1 This is a structural block diagram of a solar charging circuit provided in an embodiment of this application. Figure 1 As shown, the solar charging circuit provided in this application embodiment may include: a solar panel 110, a boost charging module 120, an electrochemical capacitor module 130, a linear charging module 140, and a lithium battery module 150; wherein, the electrochemical capacitor module 130 includes an electrochemical hybrid capacitor, so that the solar charging circuit can store electric charge through the electrochemical hybrid capacitor, and based on the electric charge stored in the electrochemical hybrid capacitor, the linear charging module 140 outputs a battery charging signal to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor, so as to charge the lithium battery contained in the lithium battery module 150.

[0055] Specifically, the lithium battery module 150 in this embodiment includes a lithium battery. The solar panel 110 is responsible for absorbing solar energy and converting the absorbed solar energy into a solar electrical signal, thus converting solar energy into electrical energy. For example, if the solar panel 110 protects five cells connected in series, and the output voltage of each cell in the series is 0.55V, then the solar panel 110 can output a solar electrical signal of 2.75V based on the absorbed solar energy and the number of cells connected in series, and send it to the boost charging module 120. The boost charging module 120 then boosts the solar electrical signal to the battery voltage, thereby achieving the charging function. As can be seen, the boost charging module 120 in this embodiment is used to boost the solar electrical signal output by the solar panel 110 under the control of the solar charging enable terminal EN1, and output a boost charging signal, so that the electrochemical capacitor module 130 can charge the electrochemical hybrid capacitor according to the boost charging signal, so as to store the electric charge through the electrochemical hybrid capacitor. Then, according to the battery temperature of the lithium battery, under the control of the capacitor charging enable signal terminal, the linear charging module 140 outputs a battery charging signal to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor, so that the lithium battery module 150 can charge the lithium battery according to the battery charging signal.

[0056] In this embodiment, the linear charging module 140, under the control of the capacitor charging enable signal EN2, outputs a battery charging signal to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor, according to the battery temperature corresponding to the lithium battery. This converts the stored charge in the electrochemical hybrid capacitor to the lithium battery in the lithium battery module 150, effectively extending the battery's runtime and solving the problem in existing related technologies where frequent charging is required due to the inability to use solar energy to charge lithium batteries at low temperatures, thus improving the user experience. The lithium battery module 150 is used to charge the lithium battery according to the battery charging signal.

[0057] In summary, the solar charging circuit provided in this application embodiment, under the control of the solar charging enable terminal EN1, boosts the solar electrical signal output from the solar panel 110 and outputs a boosted charging signal to the electrochemical capacitor module 130. This allows the electrochemical capacitor module 130 to charge the electrochemical container it contains according to the boosted charging signal, achieving low-temperature charging. Furthermore, under the control of the capacitor charging enable signal terminal EN2, the linear charging module 140, based on the battery temperature of the lithium battery in the lithium battery module 150, outputs a battery charging signal to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. This allows the lithium battery module 150 to charge the lithium battery according to the battery charging signal, utilizing the stored charge in the electrochemical hybrid capacitor to charge the lithium battery. This maximizes the utilization of solar energy, extends battery life, solves the problem in existing related technologies where low temperatures prevent the use of solar energy to charge lithium batteries, and improves user experience.

[0058] In some optional embodiments of this application, the boost charging module 120 can use a boost charging chip to boost the low voltage output by the solar panel 110 to the battery voltage, thereby achieving the charging function. For example, the boost charging module 120 may include: a first inductor L1, a boost charging chip U3, a fourth resistor R4, a fifth resistor R5, and a first capacitor C1, such as... Figure 2 As shown; the first terminal of the first inductor L1, the output terminal SP of the solar panel 110, and the power input terminal of the boost charging chip U3 are electrically connected; the second terminal of the first inductor L1 is electrically connected to the debugging input terminal of the boost charging chip U3; the output terminal SP of the solar panel 110 is used to output the solar electrical signal; the enable terminal of the boost charging chip U3 is electrically connected to the solar charging enable terminal EN1; the output terminal of the boost charging chip U3 is electrically connected to the first terminal of the fourth resistor R4, the first terminal of the first capacitor C1, and the input terminal of the electrochemical capacitor module 130. The resistance terminal of the boost charging chip U3, the second terminal of the fourth resistor R4, and the first terminal of the fifth resistor R5 are electrically connected. The ground terminal of the boost charging chip U3, the second terminal of the fifth resistor R5, and the second terminal of the first capacitor C1 are all electrically connected to the reference ground of the solar charging circuit. This allows the boost charging module 120 to boost the solar electrical signal output from the solar panel 110 under the control of the solar charging enable terminal EN1, and output a boost charging signal BOOT-OUT to the electrochemical capacitor module 130 through the output terminal of the boost charging chip U3. Specifically, the output terminal of the boost charging chip is used to output the boost charging signal BOOT-OUT.

[0059] Of course, in addition to the first inductor L1, the boost charging chip U3, the fourth resistor R4 and the fifth resistor R5 and the first capacitor C1, the boost charging module 120 in this embodiment may also include other circuit devices, so that the boost charging module 120 can boost the low voltage output by the solar panel 110 to the battery voltage and realize the charging function.

[0060] In some optional embodiments of this application, based on the above embodiments, the boost charging module 120 in this application embodiment further includes: a sixth resistor R6 and a second capacitor C2; as shown Figure 2 As shown, the first end of the sixth resistor R6 is electrically connected to the first end of the second capacitor C2, the first end of the first inductor L1, and the output terminal SP of the solar panel 110. The second end of the sixth resistor R6 is electrically connected to the second end of the second capacitor C2 and the reference ground. Thus, the solar electrical signal input to the boost charging module 120 can be regulated and filtered by the second capacitor C2, thereby avoiding the situation where the boost charging chip is easily burned out due to the instability of the solar electrical signal and ensuring circuit safety.

[0061] In some optional embodiments of this application, the linear charging module 140 can transfer the stored charge in the electrochemical hybrid capacitor to the lithium battery in the lithium battery module 150 through the linear charging chip. For example, when the battery temperature corresponding to the lithium battery is between 0 and 45 degrees Celsius, the solar panel 110 charges the electrochemical hybrid capacitor through the boost charging module 120, and the linear charging module 140 can be turned on through the linear charging chip to charge the lithium battery in the lithium battery module 150, thereby effectively extending the battery life.

[0062] Optionally, the linear charging module 140 in this embodiment includes a linear charging chip U4 and a transistor submodule 310; the power input terminal Lin-in of the transistor submodule 310 is electrically connected to the power input terminal of the linear charging chip U4 and the positive terminal BAT1 of the electrochemical hybrid capacitor, such as... Figure 3As shown, the power input terminal Lin-in of the transistor submodule 310 and the power input terminal of the linear charging chip U4 can be connected to the positive terminal BAT1 of the electrochemical hybrid capacitor through the seventh resistor R7. The control input terminal of the transistor submodule 310 is electrically connected to the capacitor charging enable signal terminal EN2. The output terminal of the transistor submodule 310 is electrically connected to the enable input terminal of the linear charging chip U4. If the output terminal of the transistor submodule 310 can be electrically connected to the enable input terminal of the linear charging chip U4 through a current-limiting resistor, the linear charging chip U4 can be triggered by the capacitor charging enable signal received by the capacitor charging enable signal terminal EN2. This allows the linear charging chip U4 to output a battery charging signal based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. The battery output terminal of the linear charging chip is electrically connected to the positive terminal BAT of the lithium battery module 150, thereby outputting a battery charging signal to the positive terminal BAT of the lithium battery module 150 through the battery output terminal to charge the lithium battery. Among them, the battery output terminal of the linear charging chip U4 is used to output the battery charging signal; the capacitor charging enable signal terminal EN2 is used to provide a capacitor charging enable signal related to the battery temperature. For example, the capacitor charging enable signal terminal EN2 is specifically used to output a capacitor charging enable signal when the battery temperature is within a preset temperature range, so that the lithium battery can be charged by the amount of electricity stored in the electrochemical hybrid capacitor within the preset temperature range.

[0063] As can be seen, in this embodiment, the power input terminal of the linear charging chip U4 is electrically connected to the power input terminal Lin-in of the transistor submodule 310 and the positive terminal BAT1 of the electrochemical hybrid capacitor. The enable input terminal of the linear charging chip U4 is electrically connected to the output terminal of the transistor submodule. The battery output terminal of the linear charging chip U4 is electrically connected to the positive terminal BAT of the lithium battery module 150. This allows the linear charging chip U4 to output a battery charging signal to the positive terminal BAT of the lithium battery module 150 through the battery output terminal, so as to charge the lithium battery using the energy stored in the electrochemical hybrid capacitor.

[0064] In some optional embodiments of this application, the transistor submodule 310 can be implemented by switching transistors and resistors, so that the transistor submodule 310 can trigger the linear charging chip U4 to output a battery charging signal based on the capacitor voltage signal provided by the electrochemical hybrid capacitor under the control of the capacitor charging enable signal terminal EN2, and supply the lithium battery module 150 with the battery charging signal, so that the lithium battery module 150 charges the lithium battery according to the battery charging signal.

[0065] Optionally, the transistor submodule in this application embodiment may include: a first transistor Q1, a second transistor Q2, a first resistor R1, a second resistor R2, and a third resistor R3; as shown Figure 3 As shown, the control terminal of the first transistor Q1, the first terminal of the first resistor R1, and the capacitor charging enable signal terminal EN2 are electrically connected. The first terminal of the first transistor Q1, the control terminal of the second transistor Q2, and the second terminal of the second resistor R2 are electrically connected. The second terminals of the first transistor Q1, the first resistor R1, and the second transistor Q2 are all electrically connected to the reference ground of the solar charging circuit. The first terminal of the second resistor R2 is electrically connected to the power input terminal of the linear charging chip U4. The first terminal of the second transistor Q2 is electrically connected to the enable input terminal of the linear charging chip U4 through the third resistor R3.

[0066] Among them, the linear charging chip U4 can be a low-voltage linear charging chip; the first transistor Q1 and the second transistor Q2 can both be insulated gate bipolar transistors (IGBTs), and this application embodiment does not limit this.

[0067] In some embodiments of this application, the lithium battery module 150 may include other circuit devices in addition to a lithium battery, to achieve corresponding functions and meet circuit usage requirements. Optionally, based on any of the above embodiments, the lithium battery module 150 in the embodiments of this application may also include a switching charging chip submodule, which is responsible for converting the energy of the external adapter to the lithium battery.

[0068] Specifically, such as Figure 4 As shown, in this embodiment, the input terminal of the switching charging chip submodule 410 is used to connect to a power adapter. The battery transmission terminal of the switching charging chip submodule 410 is electrically connected to the positive terminal BAT of the lithium battery, enabling the switching charging chip submodule to output a charging signal to the positive terminal BAT of the lithium battery based on the power signal Vcc-USB provided by the power adapter. This allows the lithium battery to be charged via the charging signal, thereby converting the energy from the external power adapter to the lithium battery for charging. Specifically, the switching charging chip submodule 410 is used to output a charging signal to the positive terminal BAT of the lithium battery based on the power signal Vcc-USB provided by the power adapter.

[0069] For example, if the switching charging chip submodule 410 includes a switching charging chip U2, the switching charging chip U2 can convert the energy of the external adapter to the lithium battery. The switching charging chip can be connected to the power adapter via a USB interface, so that the switching charging chip U2 can output a charging signal to the positive terminal BAT of the lithium battery through the battery transmission terminal based on the power signal Vcc-USB provided by the power adapter, so as to use the energy transmitted by the power adapter to charge the lithium battery and extend the battery life.

[0070] In summary, the solar charging circuit provided in this application embodiment uses a boost charging module 120 to boost the solar electrical signal output from the solar panel 110, raising the low voltage output by the solar panel 110 to the charging voltage required to charge the electrochemical hybrid capacitor. Based on this charging voltage, a boost charging signal BOOT-OUT is output to the electrochemical capacitor module 130, allowing the electrochemical capacitor module 130 to charge the electrochemical hybrid capacitor according to the boost charging signal BOOT-OUT, thereby storing electrical energy. Subsequently, the linear charging module 140, based on the battery temperature of the lithium battery and under the control of the capacitor charging enable signal EN2, outputs a battery charging signal to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor, enabling the lithium battery module 150 to charge the lithium battery according to the battery charging signal, thus realizing the charging function.

[0071] Of course, in addition to the charging function, the solar charging circuit provided in this application embodiment can also use lithium batteries and / or electrochemical hybrid capacitors to provide power to the system.

[0072] Optionally, the solar charging circuit provided in this application embodiment may include, in addition to the solar panel 110, boost charging module 120, electrochemical capacitor module 130, linear charging module 140, and lithium battery module 150, other circuit modules, such as a dual-input ideal diode module 160, which automatically selects a higher voltage power source to supply power to the system. For example, the dual-input ideal diode module 160 can compare the lithium battery voltage with the voltage of the electrochemical hybrid capacitor. If the lithium battery voltage is higher than the voltage of the electrochemical hybrid capacitor, the lithium battery is selected as the power source to supply power to the system; if the lithium battery voltage is lower than the voltage of the electrochemical hybrid capacitor, the electrochemical hybrid capacitor is selected as the power source to supply power to the system. And, if the lithium battery voltage is equal to the voltage of the electrochemical hybrid capacitor, both the lithium battery voltage and the electrochemical hybrid capacitor can be selected as the power source to supply power to the system. This application embodiment does not limit this.

[0073] In an optional embodiment of this application, the first input terminal of the dual-input ideal diode module 160 is electrically connected to the power supply output terminal of the switching charging chip submodule, and the second input terminal of the dual-input ideal diode module 160 is electrically connected to the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130. This allows the dual-input ideal diode module 160 to compare the capacitor voltage with the battery voltage based on the battery voltage signal output from the power supply output terminal of the switching charging chip submodule and the capacitor voltage signal output from the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130, thereby achieving voltage comparison. If the capacitor voltage is less than the battery voltage, then the output voltage is calculated based on the battery voltage signal. The system power supply signal VDD-SYS is output; if the capacitor voltage is higher than the battery voltage, the system power supply signal VDD-SYS is output based on the capacitor voltage signal; if the capacitor voltage is equal to the battery voltage, the system power supply signal VDD-SYS is output based on either the capacitor voltage signal or the battery voltage signal, wherein the capacitor voltage is the voltage of the electrochemical hybrid capacitor, and the battery voltage is the voltage of the lithium battery; the power supply output terminal of the switching charging chip submodule is used to output the battery voltage signal corresponding to the lithium battery, which can represent the voltage of the lithium battery; the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130 is used to output the capacitor voltage signal, such as Figure 3 As shown, the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130 can be connected to the positive terminal BAT1 of the electrochemical hybrid capacitor through the eighth resistor R8, so that the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130 can output a capacitor voltage signal based on the amount of charge stored in the electrochemical capacitor. This capacitor voltage signal can represent the voltage of the electrochemical capacitor module 130. The dual-input ideal diode module 160 is used to compare the voltage based on the capacitor voltage signal and the battery voltage signal. If the capacitor voltage is greater than the battery voltage, the system power supply signal VDD-SYS is output based on the capacitor voltage signal. If the capacitor voltage is less than the battery voltage, the system power supply signal VDD-SYS is output based on the battery voltage signal. If the capacitor voltage is equal to the battery voltage, the system power supply signal VDD-SYS is output based on either the capacitor voltage signal or the battery voltage signal.

[0074] As an example of this application, the lithium battery in the lithium battery module 150 can be used as the main battery in the solar charging circuit. To further utilize solar energy, a lithium-ion farad capacitor can be introduced into the solar charging circuit as an electrochemical hybrid capacitor in the electrochemical capacitor module 130, such as... Figure 5As shown, the charging temperature of the solar panel 110 can be between -40 and 80 degrees Celsius, which allows the solar charging circuit to use solar energy for charging normally under normal temperature conditions. For example, it can use solar energy for charging even at minus 40 degrees Celsius, thereby effectively extending the device's battery life.

[0075] Specifically, to ensure the safety of lithium battery charging, lithium batteries cannot be charged at low temperatures. Given the characteristics of lithium-ion supercapacitors, the charging scenarios of solar charging circuits can be divided into three types, with the specific implementation principles as follows:

[0076] In the first scenario, when the battery temperature is between -40 and 0 degrees Celsius, the solar power signal output by the solar panel 110 can be boosted by the boost charging chip to output a boost charging signal BOOT-OUT to charge the lithium-ion supercapacitor. To protect the lithium battery, the linear charging chip can be controlled to shut off the charging function of the lithium-ion supercapacitor via the capacitor charging enable signal terminal EN2. If the linear charging chip detects a high-level enable signal, it can output a low-level signal via the capacitor charging enable signal terminal EN2, causing the linear charging chip to shut off its charging function. Furthermore, the dual-input ideal diode module 160 can compare the capacitor voltage signal output by the lithium-ion supercapacitor with the battery voltage signal output by the switching charging chip submodule. When the supercapacitor voltage is greater than the main battery voltage, the lithium-ion supercapacitor takes over the system power supply, i.e., it discharges to power the system.

[0077] The second method involves the solar panel 110 outputting a solar signal that is boosted by a boost charging chip when the battery temperature is between 0 and 45 degrees Celsius. This boosted signal, BOOT-OUT, charges the lithium-ion supercapacitor. Simultaneously, the linear charging chip activates, utilizing the charge in the supercapacitor to charge the main lithium battery. If the linear charging chip detects a high-level enable signal, it can output a high-level signal through the capacitor charging enable signal terminal EN2, enabling the linear charging chip. Based on the supercapacitor voltage, the linear charging chip outputs a battery charging signal to charge the lithium battery. In this case, the supercapacitor voltage is greater than the main battery voltage, and the lithium-ion supercapacitor simultaneously supplies power to the system. Specifically, based on the capacitor voltage signal provided by the lithium-ion supercapacitor, the dual-input ideal diode module 160 outputs a system power supply signal to power the system. The system power supply signal is the signal used to supply power to the system.

[0078] The third method involves the solar panel 110 outputting a solar signal when the battery temperature is between 45 and 80 degrees Celsius. This signal is boosted by a boost charging chip, resulting in a BOOT-OUT signal to charge the lithium-ion supercapacitor. Simultaneously, the linear charging chip disables its charging function. If the linear charging chip detects a high-level enable signal, it can output a low-level signal through the capacitor charging enable signal terminal EN2, thus disabling the charging function. In this case, the dual-input ideal diode module 160 compares the capacitor voltage signal with the battery voltage signal. If the supercapacitor voltage is greater than the main battery voltage, the lithium-ion supercapacitor powers the system; otherwise, the lithium battery powers the system. The system power supply signal refers to the signal used to supply power to the system.

[0079] As can be seen, the example in this application can broaden the charging temperature range of the device based on the characteristics of lithium-ion supercapacitors. For example, when the battery temperature is between 0 and 45 degrees Celsius, energy can be transferred to the lithium battery, which is the main battery, through the lithium-ion supercapacitor. Furthermore, at low temperatures, if it is determined that the voltage of the lithium-ion supercapacitor is higher than the voltage of the lithium battery, the high discharge capacity of the lithium-ion supercapacitor can be used to supply power to the system, ensuring stable operation of the system.

[0080] In this application example, the power adapter can be connected to the lithium battery via a switching charging chip. The switching charging chip can then use the power signal provided by the power adapter to output a charging signal to the positive terminal of the lithium battery, thus charging the lithium battery. Furthermore, the switching charging chip can provide the battery voltage signal corresponding to the lithium battery to the dual-input ideal diode module, allowing the dual-input ideal diode module to automatically select the higher voltage power supply to provide power to the system based on the battery voltage signal and the capacitor voltage signal, thereby providing a stable power supply signal to the system.

[0081] In some optional embodiments of this application, the electrochemical capacitor module may include other circuit devices besides the electrochemical hybrid capacitor CE2, such as a capacitor protection chip U5, a ninth resistor R9, a tenth resistor R10, a third capacitor C3, a first bidirectional breakdown diode ZB1, a second bidirectional breakdown diode ZB2, a third transistor Q3, and a fourth transistor Q4. These components together form a protection circuit for the electrochemical hybrid capacitor CE2. Figure 6As shown. The third transistor Q3 and the fourth transistor Q4 can both be Insulated Gate Bipolar Transistors (IGBTs), but this embodiment does not impose any limitations on this.

[0082] Figure 7 This is a schematic flowchart illustrating the steps of a solar charging method provided in an embodiment of this application. The solar charging method provided in this application can be applied to the solar charging circuit described in any of the above embodiments of this application, such as… Figure 7 As shown, this solar charging method may specifically include the following steps:

[0083] Step 710: Under the control of the solar charging enable terminal, the solar electrical signal output by the solar panel is boosted to output a boosted charging signal;

[0084] Step 720: Charge the electrochemical hybrid capacitor in the solar charging circuit according to the boost charging signal;

[0085] Step 730: Based on the battery temperature corresponding to the lithium battery, and under the control of the capacitor charging enable signal terminal, output the battery charging signal based on the capacitor voltage signal provided by the electrochemical hybrid capacitor;

[0086] Step 740: Charge the lithium battery according to the battery charging signal.

[0087] As can be seen, the solar charging method provided in this application, under the control of the solar charging enable terminal, boosts the solar electrical signal output by the solar panel to output a boosted charging signal. Based on the boosted charging signal, the electrochemical hybrid capacitor in the solar charging circuit is charged, thereby achieving low-temperature charging. Based on the battery temperature of the lithium battery, under the control of the capacitor charging enable signal terminal, a battery charging signal is output based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. The lithium battery is then charged according to the battery charging signal. That is, the lithium battery is charged using the amount of electricity stored in the electrochemical hybrid capacitor, thereby maximizing the utilization of solar energy, extending the battery's range, and improving the user experience.

[0088] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should know that the embodiments of this application are not limited to the described order of actions, because according to the embodiments of this application, some steps may be performed in other orders or simultaneously.

[0089] like Figure 8As shown, this application embodiment provides a power supply device 800, including a solar charging circuit 810. The solar charging circuit 810 can be any of the solar charging circuits described in any embodiment of this application, enabling the power supply device 800 to achieve low-temperature power supply through the electrochemical hybrid capacitor in the solar charging circuit 810. Based on the battery temperature of the lithium battery in the lithium battery module, and under the control of the capacitor charging enable signal terminal, the linear charging module outputs a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. This allows the lithium battery module to charge the lithium battery according to the battery charging signal, utilizing the stored charge in the electrochemical hybrid capacitor to charge the lithium battery, thereby maximizing the utilization of solar energy, extending battery life, and improving user experience.

[0090] In specific implementations, the power supply device provided in this application embodiment can serve as a system power supply circuit for electronic devices. Under the control of the solar charging enable terminal, the boost charging module boosts the solar electrical signal output from the solar panel, outputting a boost charging signal to the electrochemical capacitor module. This allows the electrochemical capacitor module to charge the electrochemical container it contains, achieving low-temperature charging. Furthermore, based on the battery temperature of the lithium battery in the lithium battery module and under the control of the capacitor charging enable signal terminal, the linear charging module outputs a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. This allows the lithium battery module to charge the lithium battery using the stored charge in the electrochemical hybrid capacitor, thereby maximizing the utilization of solar energy, extending the battery life of electronic devices, and improving user experience.

[0091] like Figure 9 As shown, this application embodiment also provides an electronic device, including: a processor 111, a communication interface 112, a memory 113, and a communication bus 114, wherein the processor 111, the communication interface 112, and the memory 113 communicate with each other through the communication bus 114, the memory 113 is used to store computer programs; the processor 111 is used to implement the steps of the solar charging method provided in any of the aforementioned method embodiments when executing the computer program stored in the memory 113.

[0092] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the solar charging method as provided in any of the foregoing method embodiments.

[0093] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0094] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, it can be implemented using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0095] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0096] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A solar charging circuit, characterized in that, include: Solar panels, boost charging modules, electrochemical capacitor modules, linear charging modules, and lithium battery modules; The electrochemical capacitor module includes an electrochemical hybrid capacitor, and the lithium battery module includes a lithium battery. The boost charging module is used to boost the solar electrical signal output by the solar panel under the control of the solar charging enable terminal, and output a boost charging signal. The electrochemical capacitor module is used to charge the electrochemical hybrid capacitor according to the boost charging signal; The linear charging module is used to output a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor, under the control of the capacitor charging enable signal terminal, according to the battery temperature corresponding to the lithium battery. The lithium battery module is used to charge the lithium battery according to the battery charging signal.

2. The solar charging circuit according to claim 1, characterized in that, The linear charging module includes a linear charging chip and a transistor submodule; The power input terminal of the transistor submodule is electrically connected to the power input terminal of the linear charging chip and the positive terminal of the electrochemical hybrid capacitor. The control input terminal of the transistor submodule is electrically connected to the capacitor charging enable signal terminal. The output terminal of the transistor submodule is electrically connected to the enable input terminal of the linear charging chip. The capacitor charging enable signal terminal is used to output a capacitor charging enable signal when the battery temperature is within a preset temperature range. The battery output terminal of the linear charging chip is electrically connected to the positive terminal of the lithium battery module, and the battery output terminal is used to output the battery charging signal.

3. The solar charging circuit according to claim 2, characterized in that, The transistor submodule includes: a first transistor, a second transistor, a first resistor, a second resistor, and a third resistor; The control terminal of the first transistor is electrically connected to the first terminal of the first resistor and the capacitor charging enable signal terminal. The first terminal of the first transistor is electrically connected to the control terminal of the second transistor and the second terminal of the second resistor. The second terminals of the first transistor, the first resistor, and the second transistor are all electrically connected to the reference ground of the solar charging circuit. The first terminal of the second resistor is electrically connected to the power input terminal of the linear charging chip. The first terminal of the second transistor is electrically connected to the enable input terminal of the linear charging chip through the third resistor.

4. The solar charging circuit according to claim 1, characterized in that, The boost charging module includes: a first inductor, a boost charging chip, a fourth resistor, a fifth resistor, and a first capacitor; The first end of the first inductor is electrically connected to the output end of the solar panel and the power input end of the boost charging chip, the second end of the first inductor is electrically connected to the debugging input end of the boost charging chip, and the output end of the solar panel is used to output the solar electrical signal. The enable terminal of the boost charging chip is electrically connected to the solar charging enable terminal. The output terminal of the boost charging chip is electrically connected to the first terminal of the fourth resistor, the first terminal of the first capacitor, and the input terminal of the electrochemical capacitor module. The resistance terminal of the boost charging chip is electrically connected to the second terminal of the fourth resistor and the first terminal of the fifth resistor. The ground terminal of the boost charging chip, the second terminal of the fifth resistor, and the second terminal of the first capacitor are all electrically connected to the reference ground of the solar charging circuit. The output terminal of the boost charging chip is used to output the boost charging signal.

5. The solar charging circuit according to claim 4, characterized in that, The boost charging module also includes: a sixth resistor and a second capacitor; The first end of the sixth resistor is electrically connected to the first end of the second capacitor, the first end of the first inductor, and the output end of the solar panel, and the second end of the sixth resistor is electrically connected to the second end of the second capacitor and the reference ground.

6. The solar charging circuit according to claim 1, characterized in that, The lithium battery module further includes a switching charging chip submodule, the input terminal of which is used to connect to a power adapter, and the battery transmission terminal of which is electrically connected to the positive terminal of the lithium battery. The switching charging chip submodule is used to output a charging signal to the positive terminal of the lithium battery based on the power signal provided by the power adapter.

7. The solar charging circuit according to claim 6, characterized in that, Also includes: Dual-input ideal diode module; The first input terminal of the dual-input ideal diode module is electrically connected to the power supply output terminal of the switching charging chip submodule, and the second input terminal of the dual-input ideal diode module is electrically connected to the voltage output terminal of the electrochemical capacitor module. The power supply output terminal of the switching charging chip submodule is used to output the battery voltage signal corresponding to the lithium battery; The voltage output terminal of the electrochemical capacitor module is used to output the capacitor voltage signal; The dual-input ideal diode module is used to compare the capacitor voltage signal and the battery voltage signal; if the capacitor voltage is greater than the battery voltage, the system power supply signal is output based on the capacitor voltage signal; if the capacitor voltage is less than the battery voltage, the system power supply signal is output based on the battery voltage signal. If the capacitor voltage equals the battery voltage, then a system power supply signal is output based on the capacitor voltage signal or the battery voltage signal, wherein the capacitor voltage is the voltage of the electrochemical hybrid capacitor and the battery voltage is the voltage of the lithium battery.

8. A power supply device, characterized in that, It includes a solar charging circuit as described in any one of claims 1 to 7.

9. A solar charging method, characterized in that, Applied to the solar charging circuit as described in any one of claims 1 to 7, the method includes: Under the control of the solar charging enable terminal, the solar electrical signal output by the solar panel is boosted to output a boosted charging signal; The electrochemical hybrid capacitor in the solar charging circuit is charged according to the boost charging signal; Based on the battery temperature of the lithium battery, and under the control of the capacitor charging enable signal, a battery charging signal is output based on the capacitor voltage signal provided by the electrochemical hybrid capacitor. The lithium battery is charged according to the battery charging signal.

10. An electronic device, characterized in that, include: The processor, communication interface, memory, and communication bus are connected, with the processor, communication interface, and memory communicating with each other via the communication bus. Memory, used to store computer programs; The processor, when executing a program stored in the memory, implements the steps of the solar charging method as described in claim 9.

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