Wireless keyboard supporting solar charging

Abstract

The utility model provides a wireless keyboard supporting solar charging, which comprises a keyboard shell, and a solar panel, a plurality of keyboard keys and an indicator light module are arranged on the keyboard shell. An ultra-low power consumption master control IC, a voltage control Boost circuit, a super capacitor, a key core function module, a touch control Touch module and a radio frequency antenna module are arranged in the keyboard shell, the voltage control Boost circuit and the super capacitor are connected in sequence, the key core function module, the touch control Touch module and the radio frequency antenna module are connected with the ultra-low power consumption master control IC, and the ultra-low power consumption master control IC carries out abnormal processing on electric energy converted by the solar panel. The super capacitor is charged after being boosted by the voltage control Boost circuit, in addition, the ultra-low power consumption master control IC adjusts the boosting amplitude of the voltage control Boost circuit according to the intensity of sunlight, and the solar charging efficiency is optimized. And when the electric quantity is used up, an external Type-c charging line is supported to supply power to the ultra-low power consumption master control IC, rapid charging of the super capacitor is synchronously realized, and the ultra-low power consumption master control IC is rapidly reset through a reset pin.

Description

Technical Field

[0001] The utility model belongs to the field of computer input equipment, relates to a wireless keyboard, and in particular to a wireless keyboard supporting solar charging. Background Art

[0002] As an emerging energy storage method, supercapacitors are attracting more and more attention. Due to their environmental protection, ultra-fast charging, long life and maintenance-free advantages, they are widely used in occasions that require fast charging and discharging characteristics, especially in solar charging, backup power, power enhancement, energy recovery, etc. The solar keyboard is a kind of keyboard that uses built-in solar panels to convert natural light or artificial light into electrical energy to power the keyboard. With its environmental protection, convenience and energy-saving characteristics, it provides an ideal choice for users seeking green office solutions or outdoor use.

[0003] In order to prevent the power converted by solar energy from being insufficient to maintain the normal operation of the keyboard when the light is weak, traditional solar keyboards are often equipped with backup batteries for power supply, so that the keyboard does not completely get rid of the use of batteries and is not completely green and environmentally friendly. For example, CN204833161U, a Chinese utility model patent named "Wireless keyboard using supercapacitors to achieve solar charging and ultra-high-speed charging", specifically discloses a keyboard scheme using supercapacitors to achieve solar charging and ultra-high-speed charging. On the one hand, the scheme uses supercapacitors to directly replace batteries to solve the trickle charging problem during solar charging, and the keyboard is more green and environmentally friendly; on the other hand, the supercapacitor can be charged at ultra-high speed through an external charger, avoiding the situation where the keyboard cannot work properly when the product is completely out of power due to solar charging. However, there are still some problems. In the scheme, the collected light energy is converted into electrical energy, and the supercapacitor is directly charged after passing through the current limiting and voltage limiting circuit. When the sunlight intensity is particularly strong, despite the current limiting and voltage limiting, it may still exceed the nominal voltage of the supercapacitor, causing the charging capacitor to heat up internally and the capacity to decrease or the performance to collapse, thereby reducing the life of the supercapacitor itself and affecting the normal use of the keyboard. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the utility model proposes a wireless keyboard which processes the electric energy converted by the solar panel through the main control chip, filters out the electric energy that is not suitable for charging the supercapacitor, and then performs corresponding voltage processing on the electric energy according to the intensity of sunlight, and then uses the processed electric energy to charge the supercapacitor to provide power for the keyboard.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present utility model is specifically as follows.

[0006] The utility model provides a wireless keyboard supporting solar charging, comprising a keyboard housing, on which a solar panel, a plurality of keyboard keys, and an indicator light module are arranged; an ultra-low power consumption main control IC, a voltage control Boost circuit and a super capacitor connected in sequence, and a key core function module, a touch module, and a radio frequency antenna module respectively connected to the ultra-low power consumption main control IC are arranged inside the keyboard housing, wherein the key core function module is connected to the keyboard keys, the super capacitor is also directly connected to the ultra-low power consumption main control IC, and is used to store electric energy and provide power for the ultra-low power consumption main control IC, the voltage control Boost circuit is used to perform boost control processing on the electric energy converted from solar energy, the solar panel converts the collected solar energy into electric energy and then transmits it to the ultra-low power consumption main control IC, on the one hand, the ultra-low power consumption main control IC performs abnormal processing on the electric energy, removes the abnormal electric energy, and charges the super capacitor energy storage through the voltage control Boost circuit; on the other hand, the ultra-low power consumption main control IC controls and adjusts the boost amplitude ratio of the voltage control Boost circuit according to the detected light intensity, so as to optimize the solar energy charging efficiency.

[0007] Preferably, the voltage control Boost circuit includes two circuit implementations with different boost amplitudes, and the boost amplitude of the voltage control Boost circuit is adjusted by controlling the I / O port of the ultra-low power master IC.

[0008] Preferably, the solar panel covers the touch module.

[0009] Preferably, the indicator light module indicates the status of Caps uppercase and lowercase, pairing indication, and battery status.

[0010] Preferably, the touch module is in a closed state by default, and is turned on or off by a combination of keys on the keyboard.

[0011] Preferably, the wireless keyboard further comprises a power IC LDO module, which is respectively connected to the super capacitor and the ultra-low power consumption main control IC to perform voltage stabilization on the external power supply.

[0012] Furthermore, the power IC LDO module supports access to an external Type-c charging cable, and charges the supercapacitor at ultra-high speed after voltage stabilization, while also powering the ultra-low power master IC.

[0013] Furthermore, the ultra-low power consumption main control IC is provided with a reset pin PWD, which can be quickly reset by connecting to the Type-c charging cable.

[0014] Preferably, the ultra-low power consumption main control IC adopts an extremely low power consumption Bluetooth chip ATM3330e.

[0015] Preferably, the supercapacitor is a lead-type lithium-ion capacitor.

[0016] Beneficial effects of the utility model: The wireless keyboard provided by the utility model adopts solar panels and supercapacitors to realize solar power supply of the keyboard. The keyboard main control IC performs abnormal processing on the electric energy converted by the solar panel, and then charges the supercapacitor energy storage after the boost circuit boost control processing, avoiding the problem of capacitor performance collapse and shortened life caused by directly charging the supercapacitor after the electric energy converted by the solar panel is simply limited in voltage and current in the prior art; on the other hand, the keyboard main control IC can adjust the boost ratio of the Boost circuit according to the solar light intensity control to optimize the solar charging efficiency. When the power is exhausted, the keyboard can also power the main control IC through the external Type-c charging cable, realize the ultra-fast charging of the supercapacitor simultaneously, and can quickly reset the main control IC through the reset pin to prevent freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a functional structure diagram of the wireless keyboard in Example 1.

[0018] Figure 2 This is a functional structure diagram of the wireless keyboard in Example 2.

[0019] Figure 3 A circuit implementation method for a voltage-controlled Boost circuit.

[0020] Figure 4 Another circuit implementation method for voltage control Boost circuit. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The present invention is further described in detail below in conjunction with specific drawings and embodiments. It should be understood that the preferred embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] Example 1.

[0025] As a specific implementation method, the wireless keyboard supporting solar charging provided in this embodiment is referred to as Figure 1 , including a keyboard housing, on which a solar panel 11, a plurality of keyboard keys 12, and an indicator light module 13 are arranged; inside the keyboard housing, an ultra-low power main control IC 14, a voltage control Boost circuit 15 and a super capacitor 16 connected in sequence, and a key core function module 17, a touch module 18, and a radio frequency antenna module 19 are arranged respectively connected to the ultra-low power main control IC 14, wherein the key core function module 17 is connected to the keyboard keys 12, and the super capacitor 16 is also directly connected to the ultra-low power main control IC 14 for storing electric energy and providing power for the keyboard, and the voltage control Boost circuit 15 is used for performing voltage boost control processing on the electric energy converted from solar energy, and the solar panel 11 is covered on the touch module 18, and the collected solar energy is converted into electric energy and then transmitted to the ultra-low power main control IC 14, on the one hand, the ultra-low power main control IC 14 performs abnormal processing on the electric energy, and after removing the abnormal electric energy, the voltage control Boost circuit 15 charges the super capacitor 16 for energy storage; on the other hand, the ultra-low power main control IC 14 controls and adjusts the voltage boost ratio of the voltage control Boost circuit 15 according to the detected light intensity to optimize the solar charging efficiency.

[0026] In this embodiment, the indicator light module 13 indicates the status of Caps uppercase and lowercase, pairing indication, and power status, which is specifically manifested as follows: during the pairing process, the green light flashes every 250ms, and the green light goes out after the pairing is completed; the Caps lock green light is always on; the red light is always on when the USB plug-in starts charging, and the green light is always on when the charging is completed; when re-pairing and connecting, the green light flashes every 100ms; when there is no pairing, no Caps lock, and no USB plug-in charging, the red and green lights are all off. In the default state, the touch module 18 is in the off state, and it can be turned on or off by the combination key on the keyboard. The combination key can be Fn+B, or a custom combination key can be used.

[0027] In this embodiment, the ultra-low power main control IC 14 adopts Atmosic's ultra-low power Bluetooth chip ATM3330e, the sleep current can reach 1.3µA, and the chip integrates the solar energy collection function, which can completely replace the dual IC solution of main control + solar energy collection on the market, and has great advantages in solar energy charging. In addition, the super capacitor 16 in this embodiment adopts the lead-type lithium-ion capacitor SLD4R2L2060425HG, the charging withstand voltage is 4.2V, the rated capacity is 20F, the keyboard can work continuously for 4 to 6 hours, the cycle life is greater than 100,000 times, basically does not need to be replaced, and is more energy-saving and environmentally friendly.

[0028] Example 2.

[0029] As a specific implementation method, the wireless keyboard supporting solar charging provided in this embodiment is referred to as Figure 2 In addition to the functional structure of the embodiment 1, the embodiment 1 further includes a power IC LDO module 20, which is connected to the super capacitor 16 and the ultra-low power main control IC 14, respectively, to stabilize the voltage of the external power supply (such as the Type-c charging cable). When the power is exhausted, the external Type-c charging cable is stabilized by the power IC LDO module to stabilize the input external voltage at the working voltage of the super capacitor 16 and the ultra-low power main control IC 14, and the ultra-low power main control IC 14 is powered while the super capacitor 16 is quickly charged.

[0030] To further explain, the ultra-low power main control IC 14 of the wireless keyboard is also provided with a reset pin PWD, which can realize a quick reset of the main control IC when connected to an external Type-c charging cable, thereby preventing the keyboard from freezing due to power failure and being unable to restart.

[0031] Figure 3 and Figure 4 They are two hardware implementation circuits of the voltage control Boost circuit, corresponding to two different boosting methods. The voltage control Boost circuit 15 performs corresponding boost control processing on the electric energy converted from solar energy according to the type and charging efficiency of the charging capacitor, thereby optimizing the solar charging efficiency and cost. Figure 3 and Figure 4As shown, the BOOST integrated unit 151 is connected to five I / O ports 152 on the periphery, Short means that the I / O port 152 is connected, and Open means that the I / O port 152 is disconnected, wherein Boost_IO and Vstore are respectively connected to the ultra-low power master IC 14, Harv_out is connected to the super capacitor 16, and VHSC supports access to an external power supply. The ultra-low power master IC 14 detects the amount of electrical energy converted by the solar panel, that is, the intensity of sunlight, and adjusts the circuit structure of the voltage control Boost circuit 15 by controlling the I / O port 152, thereby performing voltage boost processing on the electrical energy in different proportions to improve the solar charging efficiency.

[0032] In summary, the wireless keyboard proposed by the utility model uses solar panels and supercapacitors to realize solar power supply of the keyboard. The keyboard main control IC performs abnormal processing on the electric energy converted by the solar panel, and then charges the supercapacitor energy storage after the boost control processing of the Boost circuit, thereby avoiding the problem of capacitor performance breakdown and shortened life caused by directly charging the supercapacitor after the electric energy converted by the solar panel is simply limited in voltage and current in the prior art; on the other hand, the keyboard main control IC can adjust the boost ratio of the Boost circuit according to the control of the solar light intensity, and optimize the solar charging efficiency. When the battery is exhausted, the keyboard can also power the main control IC through an external Type-c charging cable, realize the ultra-fast charging of the supercapacitor simultaneously, and can quickly reset the main control IC through the reset pin to prevent freezing.

[0033] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, and all fall within the scope of this patent.

Claims

1. A wireless keyboard supporting solar charging, comprising a keyboard housing, wherein a solar panel, a plurality of keyboard keys and an indicator light module are arranged on the keyboard housing, wherein: An ultra-low power main control IC, a voltage control Boost circuit and a super capacitor connected in sequence, and a key core function module, a touch module and a radio frequency antenna module respectively connected to the ultra-low power main control IC are arranged inside the keyboard housing, wherein the key core function module is connected to the keyboard keys, and the super capacitor is also directly connected to the ultra-low power main control IC for storing electric energy and providing power for the ultra-low power main control IC, the voltage control Boost circuit is used for performing voltage boost control processing on the electric energy converted from solar energy, the solar panel converts the collected solar energy into electric energy and transmits it to the ultra-low power main control IC, on the one hand, the ultra-low power main control IC performs abnormal processing on the electric energy, removes the abnormal electric energy, and charges the super capacitor energy storage through the voltage control Boost circuit; on the other hand, the ultra-low power main control IC controls and adjusts the voltage boost amplitude ratio of the voltage control Boost circuit according to the detected light intensity, so as to optimize the solar charging efficiency.

2. The wireless keyboard according to claim 1, characterized in that: The voltage control Boost circuit includes two circuit implementation modes with different boost amplitudes, and the boost amplitude of the voltage control Boost circuit is adjusted by controlling the I / O port of the ultra-low power master IC.

3. The wireless keyboard according to claim 1, characterized in that: The solar panel covers the touch module.

4. The wireless keyboard according to claim 1, characterized in that: The indicator light module indicates the status of Caps uppercase and lowercase, pairing indication, and battery status.

5. The wireless keyboard according to claim 1, characterized in that: The touch module is in a closed state by default, and is turned on or off by a combination of keys on the keyboard.

6. The wireless keyboard according to claim 1, characterized in that: The wireless keyboard also includes a power IC LDO module, which is connected to the super capacitor and the ultra-low power consumption main control IC respectively to perform voltage stabilization processing on the external power supply.

7. The wireless keyboard according to claim 6, characterized in that: The power IC LDO module supports the access of an external Type-c charging cable, charges the supercapacitor at high speed after voltage stabilization, and supplies power to the ultra-low power master IC at the same time.

8. The wireless keyboard according to claim 7, characterized in that: The ultra-low power consumption main control IC is provided with a reset pin PWD, which can be quickly reset by connecting to the Type-c charging cable.

9. The wireless keyboard according to any one of claims 1 to 8, characterized in that: The ultra-low power consumption main control IC adopts the extremely low power consumption Bluetooth chip ATM3330e.

10. The wireless keyboard according to any one of claims 1 to 8, characterized in that: The super capacitor is a lead-type lithium-ion capacitor.

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