Solar energy charging circuit, method, power supply apparatus and device

Abstract

The present application relates to a solar energy charging circuit, a method, a power supply apparatus and a device. Under the control of a solar charging enable terminal, the solar energy charging circuit boosts, by means of a boost charging module, a solar electrical signal output by a solar panel, and outputs a boosted charging signal to an electrochemical capacitor module, so that the electrochemical capacitor module charges an electrochemical hybrid capacitor in the electrochemical capacitor module on the basis of the boosted charging signal, so as to achieve low-temperature charging. Moreover, on the basis of a battery temperature corresponding to a lithium battery and under the control of a capacitor charging enable signal terminal, the solar energy charging circuit outputs a battery charging signal to a lithium battery module by means of a linear charging module on the basis of a capacitor voltage signal provided by the electrochemical hybrid capacitor, so that the lithium battery module charges the lithium battery on the basis of the battery charging signal, thereby using electric energy stored in the electrochemical hybrid capacitor to charge the lithium battery, and consequently, solar energy can be utilized more fully, and battery endurance duration is prolonged.

Description

Solar charging circuits, methods, power supply devices and equipment

[0001] This application claims priority to Chinese Patent Application No. 202411194927.3, filed on August 28, 2024, entitled "Solar Charging Circuit, Method, Power Supply Device and Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] 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

[0003] 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.

[0004] 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.

[0005] 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

[0006] 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.

[0007] 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;

[0008] The electrochemical capacitor module includes an electrochemical hybrid capacitor, and the lithium battery module includes a lithium battery.

[0009] The boost charging module is configured 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.

[0010] The electrochemical capacitor module is configured to charge the electrochemical hybrid capacitor according to a boost charging signal;

[0011] The linear charging module is configured to: based on the battery temperature corresponding to the lithium battery, and under the control of the capacitor charging enable signal terminal, output a battery charging signal to the lithium battery module based on the capacitor voltage signal provided by the electrochemical hybrid capacitor;

[0012] The lithium battery module is configured to charge the lithium battery according to the battery charging signal.

[0013] Optionally, the linear charging module includes a linear charging chip and a transistor submodule;

[0014] 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.

[0015] 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 configured to output the battery charging signal.

[0016] Optionally, the transistor submodule includes: a first transistor, a second transistor, a first resistor, a second resistor, and a third resistor;

[0017] 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.

[0018] Optionally, the boost charging module includes: a first inductor, a boost charging chip, a fourth resistor, a fifth resistor, and a first capacitor;

[0019] 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 configured to output the solar electrical signal.

[0020] 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.

[0021] The output terminal of the boost charging chip is configured to output the boost charging signal.

[0022] Optionally, the boost charging module further includes: a sixth resistor and a second capacitor;

[0023] 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.

[0024] 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.

[0025] The switching charging chip submodule is configured to output a charging signal to the positive terminal of the lithium battery based on the power signal provided by the power adapter.

[0026] Optionally, the solar charging circuit may also include: a dual-input ideal diode module;

[0027] 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.

[0028] The power supply output terminal of the switching charging chip submodule is configured to output the battery voltage signal corresponding to the lithium battery.

[0029] The voltage output terminal of the electrochemical capacitor module is configured to output the capacitor voltage signal;

[0030] The dual-input ideal diode module is configured to: compare the capacitor voltage signal and the battery voltage signal; if the capacitor voltage is greater than the battery voltage, output a system power supply signal based on the capacitor voltage signal; if the capacitor voltage is less than the battery voltage, output a system power supply signal based on the battery voltage signal; if the capacitor voltage is equal to the battery voltage, output a system power supply signal 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.

[0031] Optionally, the electrochemical capacitor module further includes a capacitor protection chip, a ninth resistor, a tenth resistor, a third capacitor, a first bidirectional breakdown diode, a second bidirectional breakdown diode, a third transistor, and a fourth transistor;

[0032] The capacitor protection chip, the ninth resistor, the tenth resistor, the third capacitor, the first bidirectional breakdown diode, the second bidirectional breakdown diode, the third transistor, and the fourth transistor constitute the protection circuit of the electrochemical hybrid capacitor.

[0033] Optionally, the first power input terminal of the capacitor protection chip is electrically connected to the positive terminal of the electrochemical hybrid capacitor through the ninth resistor, and the second power input terminal of the capacitor protection chip, the first terminal of the first bidirectional breakdown diode, the first terminal of the third transistor, and the negative terminal of the electrochemical hybrid capacitor are electrically connected.

[0034] The second terminal of the first bidirectional breakdown diode, the control terminal of the third transistor, and the first detection control terminal of the capacitor protection chip are electrically connected. The second terminal of the third transistor is electrically connected to the second terminal of the fourth transistor. The second terminal of the second bidirectional breakdown diode, the control terminal of the fourth transistor, and the second detection control terminal of the capacitor protection chip are electrically connected. The first terminal of the fourth transistor and the first terminal of the second bidirectional breakdown diode are electrically connected to the reference ground of the solar charging circuit.

[0035] The chip select input terminal of the capacitor protection chip is electrically connected to the reference ground of the solar charging circuit through the tenth resistor.

[0036] The first terminal of the third capacitor is electrically connected to the first terminal of the ninth resistor, and the second terminal of the third capacitor is electrically connected to the second power input terminal of the capacitor protection chip.

[0037] Optionally, both the third transistor and the fourth transistor Q4 are insulated-gate bipolar transistors.

[0038] Optionally, the electrochemical hybrid capacitor is a lithium-ion farad capacitor.

[0039] Optionally, the preset temperature range is 0°C to 45°C;

[0040] The capacitor charging enable signal terminal is specifically used to: output a high-level signal when the battery temperature is within the preset temperature range, so as to use the high-level signal as the capacitor charging enable signal; or, output a low-level signal when the battery temperature is not within the preset temperature range.

[0041] Optionally, the sixth resistor and the second capacitor are connected in parallel to perform voltage regulation and filtering on the solar electrical signal to prevent damage to the boost charging chip.

[0042] Optionally, both the first transistor and the second transistor are insulated-gate bipolar transistors.

[0043] Optionally, the switching charging chip submodule is connected to the power adapter via a USB interface to convert the adapter power signal into a lithium battery charging signal.

[0044] 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.

[0045] Optionally, the power supply device is integrated into the battery-powered camera to extend the battery life of the battery-powered camera.

[0046] 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:

[0047] 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;

[0048] The electrochemical hybrid capacitor in the solar charging circuit is charged according to the boost charging signal;

[0049] 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.

[0050] The lithium battery is charged according to the battery charging signal.

[0051] Optionally, the solar charging method further includes: turning off the charging function of the linear charging module in the solar charging circuit when the battery temperature is below 0°C.

[0052] Optionally, the solar charging method further includes: comparing the capacitor voltage and the battery voltage using a dual-input ideal diode module in the solar charging circuit, wherein the capacitor voltage is the voltage of the electrochemical hybrid capacitor and the battery voltage is the voltage of the lithium battery; if the capacitor voltage is greater than the battery voltage, then outputting a system power supply signal based on the capacitor voltage signal provided by the electrochemical hybrid capacitor; or, if the capacitor voltage is less than the battery voltage, outputting a system power supply signal based on the battery voltage signal corresponding to the lithium battery; or, if the capacitor voltage is equal to the battery voltage, then outputting a system power supply signal based on either the capacitor voltage signal or the battery voltage signal.

[0053] 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 configured to store a computer program; the processor is configured to, when executing the program stored in the memory, implement the steps of the solar charging method as described in any one of the third aspects of this application.

[0054] 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. This boost charging signal is then sent to the electrochemical capacitor module, allowing the electrochemical capacitor module to charge the electrochemical hybrid capacitor it contains, 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

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Figure 1 is a structural block diagram of a solar charging circuit provided in an embodiment of this application;

[0059] Figure 2 is a schematic diagram of the circuit structure of a boost charging module provided in an optional embodiment of this application;

[0060] Figure 3 is a schematic diagram of the circuit structure of a linear charging module provided in an example of this application;

[0061] Figure 4 is a schematic diagram showing the connection between the switching charging chip submodule and the dual-input ideal diode module provided in an example of this application;

[0062] Figure 5 is a schematic diagram of a solar charging circuit provided in this application.

[0063] Figure 5 is a schematic diagram of the circuit structure of a lithium battery module provided in an embodiment of this application;

[0064] Figure 7 is a schematic flowchart of a solar charging method provided in an embodiment of this application;

[0065] Figure 8 is a structural schematic diagram of a power supply device provided in an embodiment of this application;

[0066] Figure 9 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0067] 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.

[0068] 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.

[0069] To address the problem of lithium batteries being unable 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 the electrochemical hybrid capacitor it contains, thereby 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 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.

[0070] 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.

[0071] Figure 1 is a structural block diagram of a solar charging circuit provided in an embodiment of this application. As shown in Figure 1, the solar charging circuit 810 provided in this 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 131, so that the solar charging circuit 810 can store electric charge through the electrochemical hybrid capacitor 131, and based on the electric charge stored in the electrochemical hybrid capacitor 131, 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 131, so as to charge the lithium battery 151 included in the lithium battery module 150.

[0072] Specifically, the lithium battery module 150 in this embodiment includes a lithium battery 151. 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 contains 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, according to the number of cells connected in series, 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 configured 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 131 according to the boost charging signal, so as to store the electric charge through the electrochemical hybrid capacitor 131. Then, according to the battery temperature corresponding to the lithium battery 151, under the control of the capacitor charging enable signal terminal EN2, 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 131, so that the lithium battery module 150 can charge the lithium battery 151 according to the battery charging signal.

[0073] In this embodiment, the linear charging module 140 is configured to: based on the battery temperature corresponding to the lithium battery 151, and under the control of the capacitor charging enable signal EN2, output a battery charging signal to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor 131, so as to convert the amount of electricity stored in the electrochemical hybrid capacitor to the lithium battery 151 in the lithium battery module 150, thereby effectively extending the battery life and solving the problem in the prior art where the lithium battery 151 cannot be charged by solar energy at low temperatures, requiring frequent charging by the user, thus improving the user experience. The lithium battery module 150 is configured to: charge the lithium battery 151 according to the battery charging signal.

[0074] In summary, the solar charging circuit 810 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 through the boost charging module 120, and outputs a boosted charging signal to the electrochemical capacitor module 130. This allows the electrochemical capacitor module 130 to charge the electrochemical container 131 contained within it according to the boosted charging signal, achieving low-temperature charging. Furthermore, the linear charging module 140 charges the capacitor according to the battery temperature corresponding to the lithium battery 151 in the lithium battery module 150. Under the control of the charging enable signal terminal EN2, a battery charging signal is output to the lithium battery module 150 based on the capacitor voltage signal provided by the electrochemical hybrid capacitor 131. This allows the lithium battery module 150 to charge the lithium battery 151 according to the battery charging signal, utilizing the stored charge in the electrochemical hybrid capacitor 131 to charge the lithium battery 151. This maximizes the utilization of solar energy, extends the battery's runtime, solves the problem in existing related technologies where solar energy cannot be used to charge the lithium battery 151 at low temperatures, and improves the user experience.

[0075] In some optional embodiments of this application, the boost charging module 120 can boost the low voltage output by the solar panel 110 to the battery voltage through a boost charging chip to achieve 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, as shown in Figure 2; the first end of the first inductor L1, the output terminal SP of the solar panel 110, and the power input terminal VIN of the boost charging chip U3 are electrically connected; the second end of the first inductor L1 is electrically connected to the debugging input terminal SW of the boost charging chip U3; the output terminal SP of the solar panel 110 is configured to output the solar electrical signal; the enable terminal EN of the boost charging chip U3 is electrically connected to the solar charging enable terminal EN1; the output terminal VOUT of the boost charging chip U3 is connected to the first end of the fourth resistor R4 and the first capacitor C1. The first terminal of capacitor C1 is electrically connected to the input terminal 130-1 of the electrochemical capacitor module 130. The resistance terminal FB 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 GND 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 GND1 of the solar charging circuit 810. This allows the boost charging module 120 to boost the solar electrical signal output by the solar panel 110 under the control of the solar charging enable terminal EN1. The boost charging signal BOOT-OUT is then output to the electrochemical capacitor module 130 through the output terminal VOUT of the boost charging chip U3. Specifically, the output terminal VOUT of the boost charging chip U3 is configured to output the boost charging signal BOOT-OUT.

[0076] 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 output a boost charging signal BOOT-OUT to the input terminal 130-1 of the electrochemical capacitor module 130 based on the battery voltage, thereby realizing the charging function.

[0077] 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 in FIG2, 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, and the second end of the sixth resistor R6 is electrically connected to the second end of the second capacitor C2 and the reference ground GND1 of the solar charging circuit 810. This allows the second capacitor C2 to perform voltage regulation and filtering on the solar electrical signal input to the boost charging module 120, thereby preventing the boost charging chip U3 from being easily burned out due to unstable solar electrical signals and ensuring circuit safety. The sixth resistor R6 and the second capacitor C2 are connected in parallel to perform voltage regulation and filtering on the solar electrical signal to prevent damage to the boost charging chip U3.

[0078] In some optional embodiments of this application, the linear charging module 140 can transfer the energy stored in the electrochemical hybrid capacitor 131 to the lithium battery 151 in the lithium battery module 150 through the linear charging chip U4. For example, when the battery temperature corresponding to the lithium battery 151 is between 0 and 45 degrees Celsius, the solar panel 110 charges the electrochemical hybrid capacitor 131 through the boost charging module 120, and the linear charging module 140 can be turned on through the linear charging chip U4 to charge the lithium battery 151 in the lithium battery module 150, thereby effectively extending the battery life.

[0079] 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 VIN of the linear charging chip U4 and the positive terminal BAT1 of the electrochemical hybrid capacitor 131, as shown in FIG3. The power input terminal Lin-in of the transistor submodule 310 and the power input terminal VIN of the linear charging chip U4 can be connected to the positive terminal BAT1 of the electrochemical hybrid capacitor 131 through the seventh resistor R7. The control input terminal CN of the transistor submodule 310 is electrically connected to the capacitor charging enable signal terminal EN2. The output terminal J-out of the transistor submodule 310 is connected to the linear charging chip U4. The enable input terminal PROG of the linear charging chip U4 is electrically connected. For example, the output terminal J-out of the transistor submodule 310 can be electrically connected to the enable input terminal PROG of the linear charging chip U4 through a current-limiting resistor. Thus, the linear charging chip U4 can be triggered by the capacitor charging enable signal received by the capacitor charging enable signal terminal EN2, so that the linear charging chip U4 can output a battery charging signal based on the capacitor voltage signal provided by the electrochemical hybrid capacitor 131. The battery output terminal VBAT of the linear charging chip is electrically connected to the positive terminal BAT of the lithium battery module 150, so that a battery charging signal can be output to the positive terminal BAT of the lithium battery module 150 through the battery output terminal, so as to charge the lithium battery 151 through the battery charging signal. The battery output terminal VBAT of the linear charging chip U4 is configured to output the battery charging signal. The capacitor charging enable signal terminal EN2 is used to provide a capacitor charging enable signal related to 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 151 can be charged using the amount of electricity stored in the electrochemical hybrid capacitor 131 within the preset temperature range. For example, when the preset temperature range is 0°C to 45°C, the capacitor charging enable signal terminal outputs a high-level signal when the battery temperature is within this range, and outputs a low-level signal otherwise. That is, the capacitor charging enable signal terminal is specifically used to: output a high-level signal when the battery temperature is within the preset temperature range, so as to use the high-level signal as the capacitor charging enable signal; or output a low-level signal when the battery temperature is not within the preset temperature range.

[0080] As can be seen, in this embodiment, the power input terminal VIN 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 131. The enable input terminal PROG of the linear charging chip U4 is electrically connected to the output terminal of the transistor submodule. The battery output terminal VBAT 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 VBAT, so as to charge the lithium battery 151 using the energy stored in the electrochemical hybrid capacitor.

[0081] 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 131 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 151 according to the battery charging signal.

[0082] Optionally, the transistor submodule 310 in this 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 in FIG3, the control terminal Q1-C 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 Q1-1 of the first transistor Q1, the control terminal Q2-C of the second transistor Q2, and the second terminal of the second resistor R2 are electrically connected; the second terminal Q1-2 of the first transistor Q1, the second terminal of the first resistor R1, and the second terminal Q2-2 of the second transistor Q2 are all electrically connected to the reference ground GND1 of the solar charging circuit 810; the first terminal of the second resistor R2 is electrically connected to the power input terminal VIN of the linear charging chip U4; and the first terminal Q2-1 of the second transistor Q2 is electrically connected to the enable input terminal PROG of the linear charging chip U4 through the third resistor R3.

[0083] 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.

[0084] In some embodiments of this application, the lithium battery module 150 may include other circuit devices in addition to the lithium battery 151, 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 410 to convert the energy of the external adapter to the lithium battery 151.

[0085] The external adapter can refer to the adapter connected to the switching charging chip submodule 410 via its input terminal. This adapter may include, but is not limited to, the power adapter 510. Specifically, as shown in Figures 4 and 5, the input terminal 410-1 of the switching charging chip submodule 410 in this embodiment is configured to connect to the power adapter 510. The battery transmission terminal 410-2 of the switching charging chip submodule 410 is electrically connected to the positive terminal BAT of the lithium battery 151, and the positive terminal BAT of the lithium battery 151 serves as the positive terminal BAT of the lithium battery module. This allows the switching charging chip submodule 410 to output a charging signal to the positive terminal BAT of the lithium battery 151 based on the power signal Vcc-USB provided by the power adapter 510, thereby charging the lithium battery 151 through the charging signal. This converts the energy of the power adapter 510 to the lithium battery 151, thus charging the lithium battery 151 through the external power adapter 510. The switching charging chip submodule 410 is configured to output a charging signal to the positive terminal BAT of the lithium battery 151 based on the power signal Vcc-USB provided by the power adapter 510.

[0086] In an optional embodiment of this application, the switching charging chip submodule 410 can be connected to the power adapter 510 via a USB interface to convert the adapter power signal into a lithium battery charging signal. Here, the adapter power signal refers to the power signal provided by the power adapter 510; the lithium battery charging signal refers to the charging signal used to charge the lithium battery 151.

[0087] For example, when 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 151. The external adapter can refer to the power adapter 510 connected to the switching charging chip submodule 410 through the switching charging chip U2, as shown in Figure 5. The switching charging chip U2 can be connected to the power adapter 510 through a USB interface, so that the switching charging chip U2 can output a charging signal to the positive terminal BAT of the lithium battery 151 through the battery transmission terminal 410-2 based on the power signal Vcc-USB provided by the power adapter 510, so as to use the energy transmitted by the power adapter 510 to charge the lithium battery 151 and extend the battery life of the lithium battery 151.

[0088] In summary, the solar charging circuit 810 provided in this embodiment boosts the solar electrical signal output from the solar panel 110 via the boost charging module 120, raising the low voltage output from the solar panel 110 to the charging voltage required to charge the electrochemical hybrid capacitor 131. Based on this charging voltage, it outputs a boost charging signal BOOT-OUT to the electrochemical capacitor module 130, enabling the electrochemical capacitor module 130 to charge the electrochemical hybrid capacitor 131 according to the boost charging signal BOOT-OUT, thereby storing electrical energy in the electrochemical hybrid capacitor 131. Subsequently, the linear charging module 140, based on the battery temperature corresponding to the lithium battery 151 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 131, allowing the lithium battery module 150 to charge the lithium battery 151 according to the battery charging signal, thus realizing the charging function.

[0089] Of course, in addition to the charging function, the solar charging circuit 810 provided in this application embodiment can also use the lithium battery 151 and / or the electrochemical hybrid capacitor 131 to provide power to the system 520.

[0090] Optionally, the solar charging circuit 810 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, to automatically select a higher voltage power supply to power the system 520. For example, the dual-input ideal diode module 160 can compare the voltage of the lithium battery 151 with the voltage of the electrochemical hybrid capacitor 131. When the voltage of lithium battery 151 is higher than the voltage of electrochemical hybrid capacitor 131, lithium battery 151 is selected as the power source for supplying power to system 520; when the voltage of lithium battery 151 is lower than the voltage of electrochemical hybrid capacitor 131, electrochemical hybrid capacitor 131 is selected as the power source for supplying power to system 520; and when the voltage of lithium battery 151 is equal to the voltage of electrochemical hybrid capacitor 131, both the voltage of lithium battery 151 and the voltage of electrochemical hybrid capacitor 131 can be selected as the power source for supplying power to system 520. This embodiment of the application does not limit this.

[0091] In an optional embodiment of this application, the first input terminal 160-1 of the dual-input ideal diode module 160 is electrically connected to the power supply output terminal 410-3 of the switching charging chip submodule 410, and the second input terminal 160-2 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 adjust the voltage output of the electrochemical capacitor 130 based on the battery voltage signal output from the power supply output terminal 410-3 of the switching charging chip submodule 410 and the capacitor voltage signal output from the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130. The voltage of capacitor 131 is compared with the voltage of lithium battery 151 to achieve voltage comparison; 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 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 electrochemical hybrid capacitor 131, and the battery voltage is the voltage of lithium battery 151; the power supply output terminal of the switching charging chip submodule is configured to output the... The battery voltage signal corresponding to the lithium battery 151 represents the voltage of the lithium battery 151. The voltage output terminal BAT1-OUT of the electrochemical capacitor module 130 is configured to output the capacitor voltage signal. As shown in Figure 3, 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 131 through the eighth resistor R8, so that the voltage output terminal BAT1-OUT of the electrochemical capacitor module 130 can output the capacitor voltage signal based on the amount of charge stored in the electrochemical hybrid capacitor 131. This capacitor voltage signal represents the capacitance of the electrochemical capacitor module 130. Voltage, for example, when the electrochemical capacitor 131 is a lithium-ion supercapacitor CE2, the capacitor voltage signal is the voltage signal of the lithium-ion supercapacitor CE2; the dual-input ideal diode module 160 is configured to: compare the capacitor voltage signal and the battery voltage signal; if the capacitor voltage is greater than the battery voltage, output the system power supply signal VDD-SYS based on the capacitor voltage signal; if the capacitor voltage is less than the battery voltage, output the system power supply signal VDD-SYS based on the battery voltage signal; if the capacitor voltage is equal to the battery voltage, output the system power supply signal VDD-SYS based on either the capacitor voltage signal or the battery voltage signal.

[0092] As an example of this application, the lithium battery 151 in the lithium battery module 150 can be used as the main battery in the solar charging circuit 810. In order to make greater use of solar energy, a lithium-ion supercapacitor CE2 can be introduced into the solar charging circuit 810 as an electrochemical hybrid capacitor 131 in the electrochemical capacitor module 130, as shown in Figure 5. This allows the charging temperature of the solar panel 110 to be between -40 and 80 degrees Celsius, so that the solar charging circuit 810 can use solar energy to charge normally at normal temperatures, and can even use solar energy to charge normally at minus 40 degrees Celsius, thereby effectively extending the device's battery life.

[0093] 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 the solar charging circuit 810 can be divided into three types, with the specific implementation principles as follows:

[0094] 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 U3, outputting a boost charging signal BOOT-OUT to charge the lithium-ion supercapacitor CE2. This allows the lithium-ion supercapacitor CE2 to be charged via the solar panel. To protect the lithium battery 151, the linear charging chip U4 can be controlled by the capacitor charging enable signal EN2 to shut off the charging function of the lithium-ion supercapacitor CE2. For example, if the linear charging chip U4 is enabled by detecting a high-level enable signal, it can output a low-level signal through the capacitor charging enable signal EN2, causing the linear charging chip to turn off its charging function. Yes, and the dual-input ideal diode module 160 can compare the capacitor voltage signal output by the lithium-ion supercapacitor CE2 with the battery voltage signal output by the switching charging chip submodule 410. When the supercapacitor voltage is greater than the main battery voltage, the lithium-ion supercapacitor CE2 takes over the power supply of the system 520, that is, it discharges through the lithium-ion supercapacitor CE2 to supply power to the system 520. The capacitor voltage signal output by the lithium-ion supercapacitor CE2 can represent the supercapacitor voltage, which is the voltage of the lithium-ion supercapacitor CE2. The battery voltage signal output by the switching charging chip U2 can represent the main battery voltage, which is the power supply voltage of the main battery.

[0095] The second method involves the solar panel 110 outputting a solar signal that is boosted by the boost charging chip U3 when the battery temperature is between 0 and 45 degrees Celsius. This boosted signal, BOOT-OUT, charges the lithium-ion supercapacitor CE2. Simultaneously, the linear charging chip U4 is activated, using the charge in the supercapacitor CE2 to charge the main lithium battery 151. If the linear charging chip U4 is enabled by detecting a high-level signal, it can output a high-level signal through the capacitor charging enable signal terminal EN2, enabling U4. Based on the supercapacitor voltage, U4 outputs a battery charging signal to charge the lithium battery 151. At this time, the supercapacitor voltage is greater than the main battery voltage. The lithium-ion supercapacitor CE2 simultaneously supplies power to the system 520. Based on the capacitor voltage signal provided by CE2, the dual-input ideal diode module 160 outputs a system power supply signal to power the system 520. The system power supply signal is specifically used to power the system 520.

[0096] Thirdly, when the battery temperature is between 45 and 80 degrees Celsius, the solar power signal output by the solar panel 110 is boosted by the boost charging chip U3, outputting a boost charging signal BOOT-OUT to charge the lithium-ion supercapacitor CE2, while the linear charging chip U4 disables its charging function. If the linear charging chip U4 is enabled by detecting a high-level enable signal, a low-level signal can be output through the capacitor charging enable signal terminal EN2, causing the linear charging chip U4 to disable its charging function. At this time, the dual-input ideal diode module 160 can compare the capacitor voltage signal with the battery voltage signal. When the supercapacitor voltage is greater than the main battery voltage, the lithium-ion supercapacitor CE2 supplies power to the system 520; when the supercapacitor voltage is not greater than the main battery voltage, the lithium battery 151 supplies power to the system 520. The system 520 power supply signal refers to the signal used to supply power to the system 520.

[0097] As can be seen, the example of this application can broaden the charging temperature range of the device based on the characteristics of the lithium-ion supercapacitor CE2. For example, when the battery temperature is between 0 and 45 degrees Celsius, energy can be transferred to the lithium battery 151, which is the main battery, through the lithium-ion supercapacitor CE2. Furthermore, at low temperatures, if it is determined that the voltage of the lithium-ion supercapacitor CE2 is higher than the voltage of the lithium battery 151, the high discharge capacity of the lithium-ion supercapacitor CE2 can be used to supply power to the system 520, ensuring the stable operation of the system 520.

[0098] In this application example, the power adapter can be connected to the lithium battery 151 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 151, thus charging the lithium battery. Furthermore, the switching charging chip U2 can provide the battery voltage signal corresponding to the lithium battery 151 to the dual-input ideal diode module 160, allowing the dual-input ideal diode module 160 to automatically select the higher voltage power source to supply power to the system 520 based on the battery voltage signal and the capacitor voltage signal, thereby providing a stable power supply signal to the system 520.

[0099] In some optional embodiments of this application, the electrochemical capacitor module 130 may include other circuit devices in addition to the electrochemical hybrid capacitor 131, 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, to form a protection circuit for the electrochemical hybrid capacitor 131, as shown in Figure 6. The capacitor protection chip U5 has its first power input terminal VDD electrically connected to the positive terminal BAT1 of the electrochemical hybrid capacitor 131 via the resistor R9. The capacitor protection chip U5's second power input terminal VSS, the first terminal of the first bidirectional breakdown diode ZB1, the first terminal of the third transistor Q3, and the negative terminal of the electrochemical hybrid capacitor 131 are electrically connected. The second terminal of the first bidirectional breakdown diode ZB1, the control terminal of the third transistor Q3, and the first detection control terminal OD of the capacitor protection chip U5 are electrically connected. The second terminal of the third transistor Q3 is electrically connected to the second terminal of the fourth transistor Q4. The second terminal of the second bidirectional breakdown diode ZB2, the control terminal of the fourth transistor Q4, and the second detection control terminal OC of the capacitor protection chip U5 are electrically connected. The first terminal of the fourth transistor Q4 and the first terminal of the second bidirectional breakdown diode ZB2 are electrically connected to the reference ground of the solar charging circuit 810.

[0100] Furthermore, the chip select input terminal CS of the capacitor protection chip U5 can be electrically connected to the reference ground through the tenth resistor R10; the first terminal of the third capacitor C3 is electrically connected to the first terminal of the ninth resistor, that is, the second terminal of the third capacitor C3 is electrically connected to the second power input terminal VSS of the capacitor protection chip U5. The second terminal of the third capacitor C3, the second power input terminal VSS of the capacitor protection chip U5, the first terminal of the first bidirectional breakdown diode ZB1, the first terminal of the third transistor Q3, and the negative terminal of the electrochemical hybrid capacitor 131 are connected to the same node, so that the second capacitor C3 acts as a filter and plays a role in filtering and stabilizing voltage.

[0101] As an example of this application, when the electrochemical hybrid capacitor 131 is overcharged, the third transistor Q3 and the fourth transistor Q4 can be controlled by the capacitor protection chip U5 to disconnect the charging path.

[0102] Among them, the electrochemical hybrid capacitor 131 can be a lithium-ion supercapacitor CE2, and the third transistor Q3 and the fourth transistor Q4 can both be insulated gate bipolar transistors (IGBTs). This application does not limit this.

[0103] Figure 7 is a schematic flowchart 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. As shown in Figure 7, the solar charging method specifically includes the following steps:

[0104] 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;

[0105] Step 720: Charge the electrochemical hybrid capacitor in the solar charging circuit according to the boost charging signal;

[0106] 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;

[0107] Step 740: Charge the lithium battery according to the battery charging signal.

[0108] 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.

[0109] Optionally, the solar charging method provided in this application embodiment may further include: turning off the charging function of the linear charging module in the solar charging circuit when the battery temperature is below 0°C.

[0110] Optionally, the solar charging method provided in this application embodiment may further include: comparing the capacitor voltage and the battery voltage through a dual-input ideal diode module in the solar charging circuit, wherein the capacitor voltage is the voltage of the electrochemical hybrid capacitor and the battery voltage is the voltage of the lithium battery; if the capacitor voltage is greater than the battery voltage, outputting a system power supply signal based on the capacitor voltage signal provided by the electrochemical hybrid capacitor; or, if the capacitor voltage is less than the battery voltage, outputting a system power supply signal based on the battery voltage signal corresponding to the lithium battery; or, if the capacitor voltage is equal to the battery voltage, outputting a system power supply signal based on the capacitor voltage signal or the battery voltage signal.

[0111] 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.

[0112] As shown in Figure 8, 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. This allows 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, 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. This maximizes the utilization of solar energy, extends battery life, and improves user experience.

[0113] For example, the power supply device provided in this application embodiment is integrated into the battery-powered camera to extend the battery life of the battery-powered camera.

[0114] In a specific implementation, 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 hybrid capacitor contained within it according to the boost charging signal, thereby 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 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 the battery life of electronic devices, and improves the user experience.

[0115] As shown in Figure 9, 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, and the memory 113 is configured to store computer programs; the processor 111 is configured to, when executing the computer program stored in the memory 113, implement the steps of the solar charging method provided in any of the aforementioned method embodiments.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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, wherein, 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 configured 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 configured to charge the electrochemical hybrid capacitor according to a boost charging signal; The linear charging module is configured 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 configured to charge the lithium battery according to the battery charging signal.

2. The solar charging circuit according to claim 1, wherein, 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 configured to output the battery charging signal.

3. The solar charging circuit according to claim 2, wherein, 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, wherein, 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 configured 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 configured to output the boost charging signal.

5. The solar charging circuit according to claim 4, wherein, 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, wherein, 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 configured 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, wherein, The solar charging circuit also includes: a 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 configured to output the battery voltage signal corresponding to the lithium battery. The voltage output terminal of the electrochemical capacitor module is configured to output the capacitor voltage signal; The dual-input ideal diode module is configured to: compare the capacitor voltage signal and the battery voltage signal; if the capacitor voltage is greater than the battery voltage, output a system power supply signal based on the capacitor voltage signal; if the capacitor voltage is less than the battery voltage, output a system power supply signal based on the battery voltage signal; if the capacitor voltage is equal to the battery voltage, output a system power supply signal 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.

8. The solar charging circuit according to claim 1, wherein, The electrochemical capacitor module also includes a capacitor protection chip, a ninth resistor, a tenth resistor, a third capacitor, a first bidirectional breakdown diode, a second bidirectional breakdown diode, a third transistor, and a fourth transistor; The capacitor protection chip, the ninth resistor, the tenth resistor, the third capacitor, the first bidirectional breakdown diode, the second bidirectional breakdown diode, the third transistor, and the fourth transistor constitute the protection circuit of the electrochemical hybrid capacitor.

9. The solar charging circuit according to claim 8, wherein, The first power input terminal of the capacitor protection chip is electrically connected to the positive terminal of the electrochemical hybrid capacitor through the ninth resistor. The second power input terminal of the capacitor protection chip, the first terminal of the first bidirectional breakdown diode, the first terminal of the third transistor, and the negative terminal of the electrochemical hybrid capacitor are electrically connected. The second terminal of the first bidirectional breakdown diode, the control terminal of the third transistor, and the first detection control terminal of the capacitor protection chip are electrically connected. The second terminal of the third transistor is electrically connected to the second terminal of the fourth transistor. The second terminal of the second bidirectional breakdown diode, the control terminal of the fourth transistor, and the second detection control terminal of the capacitor protection chip are electrically connected. The first terminal of the fourth transistor and the first terminal of the second bidirectional breakdown diode are electrically connected to the reference ground of the solar charging circuit. The chip select input terminal of the capacitor protection chip is electrically connected to the reference ground of the solar charging circuit through the tenth resistor. The first terminal of the third capacitor is electrically connected to the first terminal of the ninth resistor, and the second terminal of the third capacitor is electrically connected to the second power input terminal of the capacitor protection chip.

10. The solar charging circuit according to claim 8, wherein, Both the third transistor and the fourth transistor are insulated-gate bipolar transistors, and the electrochemical hybrid capacitor is a lithium-ion farad capacitor.

11. The solar charging circuit according to claim 2, wherein, The preset temperature range is 0°C to 45°C; The capacitor charging enable signal terminal is specifically used to: output a high-level signal when the battery temperature is within the preset temperature range, so as to use the high-level signal as the capacitor charging enable signal; or, output a low-level signal when the battery temperature is not within the preset temperature range.

12. The solar charging circuit according to claim 5, wherein, The sixth resistor and the second capacitor are connected in parallel to perform voltage regulation and filtering on the solar electrical signal to prevent damage to the boost charging chip.

13. The solar charging circuit according to claim 3, wherein, Both the first transistor and the second transistor are insulated-gate bipolar transistors.

14. The solar charging circuit according to claim 6, wherein, The switching charging chip submodule is connected to the power adapter via a USB interface.

15. A power supply device comprising a solar charging circuit as described in any one of claims 1 to 14.

16. The power supply device according to claim 15, wherein, The power supply device is integrated into the battery-powered camera to extend the battery life of the camera.

17. A solar charging method, wherein, The method, applied to a solar charging circuit as described in any one of claims 1 to 14, comprises: 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.

18. The solar charging method according to claim 17, wherein, The solar charging method also includes: When the battery temperature is below 0°C, the charging function of the linear charging module in the solar charging circuit is turned off.

19. The solar charging method according to claim 17, wherein, The solar charging method also includes: The capacitor voltage and battery voltage are compared using the dual-input ideal diode module in the solar charging circuit, wherein the capacitor voltage is the voltage of the electrochemical hybrid capacitor and the battery voltage is the voltage of the lithium battery. If the capacitor voltage is greater than the battery voltage, then a system power supply signal is output based on the capacitor voltage signal provided by the electrochemical hybrid capacitor; or, If the capacitor voltage is lower than the battery voltage, a system power supply signal is output based on the battery voltage signal corresponding to the lithium battery; or... If the capacitor voltage equals the battery voltage, then the system power supply signal is output based on the capacitor voltage signal or the battery voltage signal.

20. An electronic device, wherein, The components include: 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 configured to store computer programs; The processor is configured to, when executing a program stored in memory, implement the steps of the solar charging method as described in any one of claims 17 to 19.

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