Low-power-consumption battery electric quantity display circuit and system

Abstract

The utility model relates to a low-power-consumption battery electric quantity display circuit and system, and the circuit comprises an energy supply unit which comprises at least one battery pack; the sampling unit comprises an ADC sampling circuit, one end of the ADC sampling circuit is connected with the energy supply unit, and the ADC sampling circuit samples the voltage of the energy supply unit; the control unit comprises a first control chip U1, and the other end of the sampling unit is connected to the first control chip U1; the voltage stabilizing unit comprises a voltage stabilizing circuit; and the switch unit is arranged between the energy supply unit and the voltage stabilization unit, and the switch unit is used for controlling the electric connection between the energy supply unit and the voltage stabilization unit. The overall power consumption of the battery electric quantity display circuit can be effectively reduced, the service life of the battery is effectively prolonged, the charging frequency is reduced, the service life of the battery is prolonged, operation is easy, the circuit is switched on and the electric quantity of the battery pack is displayed by pressing the key, convenience is brought to a user, operation is easy, and practicability is high. And the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power display, in particular to a low-power battery power display circuit and system. Background Art

[0002] With the development of science and technology, lithium batteries are widely used in various portable electronic devices due to their advantages such as high energy density, long cycle life and environmental protection. However, since the battery power cannot be displayed intuitively, users often cannot accurately know the remaining battery power, which brings inconvenience to use. Therefore, how to design a circuit that can display the power of lithium batteries in real time has become an important research topic. In the field of electronic display technology, LED (light emitting diode) is widely used in various display devices due to its advantages such as high brightness, low energy consumption and long life. Among them, RGB LED can display a variety of colors and has a very high display effect. In the field of low-power electronic equipment technology, low-power design is an important research direction. Low-power design can not only increase the use time of the equipment, but also reduce energy consumption, and also has a positive effect on environmental protection. In the prior art, the solution is mainly to obtain the voltage value of the port through sampling by the single-chip ADC (analog-to-digital converter), and then display the power through multiple LEDs. However, the disadvantage of this solution is high power consumption, especially when the battery power is low, the power consumption of the display circuit will increase significantly, which will have a great impact on the battery life.

[0003] The disadvantage of the prior art is that although the existing solution can realize the display of lithium battery power, it has problems in low power consumption. When the battery power is low, the power consumption of the display circuit will increase significantly, which will have a great impact on the battery life. In addition, the existing solution usually needs to control the on and off of the circuit through software logic, which brings inconvenience to the user's operation. Therefore, how to design a low-power and easy-to-operate lithium battery power display circuit has become a problem to be solved urgently. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a low-power battery power display circuit and system, which can reduce the overall power consumption of the circuit while ensuring the battery power display effect, especially the power consumption when the battery power is low. The circuit can be controlled on and off without a software logic switch, thereby improving the user's operating convenience and extending the battery life.

[0005] In order to solve the above technical problems, the utility model provides a low-power battery power display circuit, comprising:

[0006] A power supply unit comprising at least one battery pack;

[0007] A sampling unit, comprising an ADC sampling circuit, one end of which is connected to the energy supply unit, and the ADC sampling circuit samples the voltage of the energy supply unit;

[0008] A control unit, comprising a first control chip U1, the other end of the sampling unit being connected to the first control chip U1;

[0009] A voltage stabilizing unit, comprising a voltage stabilizing circuit, the voltage stabilizing circuit being arranged between the energy supply unit and the control unit, the voltage stabilizing circuit comprising a second control chip U2;

[0010] A switch unit, which is disposed between the energy supply unit and the voltage stabilizing unit, and is used to control the electrical connection between the energy supply unit and the voltage stabilizing unit;

[0011] The display unit includes a display circuit, wherein the display circuit is connected to the first control chip U1 and includes a display light module.

[0012] In an embodiment of the present invention, the switch unit includes a key switch SW1, one end of the key switch SW1 is connected to the energy supply unit, and the other end of the key switch SW1 is connected to the voltage stabilizing unit.

[0013] In one embodiment of the utility model, the voltage stabilizing circuit also includes a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1 and a first capacitor C1, the first resistor R1 and the second resistor R2 are connected in parallel, one end of the first resistor R1 and the second resistor R2 are connected to the switch unit, and the other end is connected to the input end of the second control chip U2, the output end of the second control chip U2 is connected to the display unit, one end of the third resistor R3 is connected to the input end of the second control chip U2, the other end of the third resistor R3 is grounded, one end of the first diode D1 is connected to the input end of the second control chip U2, the other end of the first diode D1 is grounded, and one end of the first capacitor C1 is connected to the input end of the second control chip U2.

[0014] In one embodiment of the present utility model, the sampling circuit includes a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, and the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 are sequentially arranged between the energy supply unit and the first control chip U1, wherein the sixth resistor R6 is connected to the PA4 port of the first control chip U1.

[0015] In one embodiment of the present utility model, the sampling circuit also includes a seventh resistor R7 and a second capacitor C2, one end of the seventh resistor R7 is arranged between the fifth resistor R5 and the sixth resistor R6, and the other end of the seventh resistor R7 is grounded, one end of the second capacitor C2 is arranged between the fifth resistor R5 and the sixth resistor R6, and the other end of the second capacitor C2 is grounded.

[0016] In one embodiment of the present invention, the display circuit includes an RGB LED lamp module, the RGB LED lamp module includes a first LED lamp, a second LED lamp and a third LED lamp, and the colors of the first LED lamp, the second LED lamp and the third LED lamp are different.

[0017] In one embodiment of the utility model, the display circuit also includes an eighth resistor R8, a ninth resistor R9 and a tenth resistor R10, the eighth resistor R8 is arranged between the first LED lamp and the PA11 port of the first control chip U1, the ninth resistor R9 is arranged between the second LED lamp and the PA8 port of the first control chip U1, and the tenth resistor R10 is arranged between the third LED lamp and the PA7 port of the first control chip U1.

[0018] In one embodiment of the present invention, the model of the first control chip U1 is STM32C011F6P6.

[0019] In one embodiment of the present invention, the model of the second control chip U2 is SGM2203.

[0020] The present invention also provides a low-power battery power display system, comprising the low-power battery power display circuit as described above.

[0021] The above technical solution of the utility model has the following advantages compared with the prior art:

[0022] The utility model discloses a low-power battery power display circuit, which is provided with an energy supply unit, a sampling unit, a control unit, a voltage stabilizing unit, a switch unit and a display unit. The switch unit can control the on and off of the entire circuit, and the on and off of the circuit are realized by controlling the on and off of the switch unit, and the power of the battery pack is displayed through the display unit. Therefore, when the power of the battery pack does not need to be displayed, the switch unit is controlled to be disconnected, so that the entire circuit enters a power-off state, so that no power is consumed, and low power consumption is achieved, so that the overall power consumption of the battery power display circuit can be effectively reduced, thereby effectively increasing the battery usage time, reducing the charging frequency, and thus extending the battery life.

[0023] In addition, the utility model is easy to operate, and can conduct the circuit and display the power level of the battery pack by pressing a button, which brings convenience to users, is easy to operate, and improves the user experience.

[0024] Furthermore, the utility model uses a small RGB light to display the battery pack power level, and can represent the power level through a variety of colors, with a clear display effect, so that it is convenient for users to view.

[0025] In addition, the utility model obtains the voltage value of the battery pack through single-chip microcomputer ADC sampling, so as to be able to display the power of the battery pack in real time, so that the user can accurately know the remaining power of the battery, which brings convenience to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0027] Figure 1 It is an overall schematic block diagram of the circuit structure of the preferred embodiment of the utility model.

[0028] Figure 2 It is a schematic diagram of the connection structure of the sampling unit, the control unit and the voltage stabilizing unit of the circuit of the preferred embodiment of the utility model.

[0029] Figure 3 It is a schematic diagram of the connection structure of the control unit and the display unit of the circuit in the preferred embodiment of the utility model.

[0030] Explanation of the markings in the specification: U1, first control chip; U2, second control chip; SW1, key switch; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; R7, seventh resistor; R8, eighth resistor; R9, ninth resistor; R10, tenth resistor; C1, first capacitor; C2, second capacitor; D1, first diode; LED1, first LED lamp; LED2, second LED lamp; LED3, third LED lamp. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0032] Reference Figure 1 As shown, the utility model discloses a low-power battery power display circuit, including an energy supply unit, wherein the energy supply unit includes at least one battery pack;

[0033] The low-power battery power display circuit also includes a sampling unit, which includes an ADC sampling circuit. One end of the ADC sampling circuit is connected to the energy supply unit, and the ADC sampling circuit can sample the voltage of the energy supply unit.

[0034] The low-power battery power display circuit also includes a control unit, and the control unit includes a first control chip U1. One end of the sampling unit is connected to the energy supply unit, and the other end of the sampling unit is connected to the first control chip U1. In detail, the ADC analog input port of the first control chip U1 is connected to the positive terminal of the battery pack through the ADC sampling circuit, and the voltage signal of the battery pack is converted into a digital signal through the analog-to-digital converter inside the ADC sampling circuit.

[0035] The low-power battery power display circuit also includes a voltage stabilizing unit, the voltage stabilizing unit includes a voltage stabilizing circuit, the voltage stabilizing circuit is arranged between the energy supply unit and the control unit, the voltage stabilizing circuit includes a second control chip U2, and the voltage stabilizing circuit can maintain the stability of the output voltage under different input voltages, load changes, ambient temperature changes and other circuit parameter changes;

[0036] The low-power battery power display circuit also includes a switch unit, which is arranged between the energy supply unit and the voltage stabilizing unit, and is used to control the electrical connection between the energy supply unit and the voltage stabilizing unit. When the switch unit is turned on, the energy supply unit and the voltage stabilizing unit are electrically connected, and when the switch unit is turned off, the electrical connection between the energy supply unit and the voltage stabilizing unit is cut off;

[0037] The low-power battery power display circuit further includes a display unit, the display unit includes a display circuit, the display circuit is connected to the first control chip U1, the display circuit includes a display light module, and the display light module includes at least one LED display light.

[0038] The first control chip U1 converts the sampled voltage value into the remaining power of the lithium battery. As a preferred embodiment, a linear interpolation method is used to calculate the corresponding power percentage according to the sampled voltage value. The calculated power percentage is output to the display unit, and different power percentages are displayed by controlling the color and brightness of the LED display light.

[0039] It can be known from this that the low-power battery power display circuit to be protected by the utility model is provided with an energy supply unit, a sampling unit, a control unit, a voltage stabilizing unit, a switch unit and a display unit. The on and off of the entire circuit can be controlled by the switch unit, and the on and off of the circuit are realized by controlling the on and off of the switch unit, and the power of the battery pack is displayed by the display unit. Therefore, when the battery pack power does not need to be displayed, the switch unit is controlled to be disconnected, so that the entire circuit enters a power-off state, so that no power is consumed, and low power consumption is achieved, so that the overall power consumption of the battery power display circuit can be effectively reduced, thereby effectively increasing the battery usage time, reducing the charging frequency, and thus extending the battery life.

[0040] As a preferred embodiment, the type of the battery pack includes but is not limited to a lithium battery.

[0041] As a preferred implementation, the sampling frequency of the sampling unit is 1 Hz, so that sampling can be performed once per second.

[0042] Further, the switch unit includes a push switch SW1, one end of the push switch SW1 is connected to the energy supply unit, and the other end of the push switch SW1 is connected to the voltage stabilizing unit. Specifically, the circuit is turned on by pressing the push switch SW1, and the power level of the battery pack is displayed at the same time. The circuit will remain in the on state only after the push switch SW1 is pressed, and the circuit will be powered off when the push switch SW1 is released. With this arrangement, the circuit can automatically enter the power-off state when there is no need to display the power level. The setting of the push switch SW1 can facilitate user operation, thereby bringing convenience to the user and improving the user experience.

[0043] As a preferred embodiment, the voltage stabilizing circuit further includes a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1 and a first capacitor C1, the first resistor R1 and the second resistor R2 are connected in parallel, one end of the first resistor R1 and the second resistor R2 are connected to the switch unit, and the other end is connected to the input end of the second control chip U2, the output end of the second control chip U2 is connected to the display unit, one end of the third resistor R3 is connected to the input end of the second control chip U2, the other end of the third resistor R3 is grounded, one end of the first diode D1 is connected to the input end of the second control chip U2, the other end of the first diode D1 is grounded, and one end of the first capacitor C1 is connected to the input end of the second control chip U2. In detail, the first diode D1 adopts a Zener diode.

[0044] As a preferred embodiment, the sampling circuit includes a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, and the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 are sequentially arranged between the energy supply unit and the first control chip U1, wherein the sixth resistor R6 is connected to the PA4 port of the first control chip U1.

[0045] Furthermore, the sampling circuit also includes a seventh resistor R7 and a second capacitor C2, one end of the seventh resistor R7 is arranged between the fifth resistor R5 and the sixth resistor R6, and the other end of the seventh resistor R7 is grounded, one end of the second capacitor C2 is arranged between the fifth resistor R5 and the sixth resistor R6, and the other end of the second capacitor C2 is grounded.

[0046] As a preferred implementation, the display light module includes an RGB LED light module, and the RGB LED light module includes a first LED light LED1, a second LED light LED2, and a third LED light LED3, and the colors of the first LED light LED1, the second LED light LED2, and the third LED light LED3 are different.

[0047] The first control chip U1 outputs the calculated power percentage to the display unit through the GPIO port, thereby controlling the RGB LED light module. As a preferred embodiment, the first LED light LED1 is red, the second LED light LED2 is green, and the third LED light LED3 is blue. By adjusting the brightness of the first LED light LED1, the second LED light LED2, and the third LED light LED3, different power percentages are displayed. Thus, the power of the battery pack can be displayed through multiple colors by using the RGB LED light module, with a clear display effect, so that it is convenient for users to view.

[0048] As a preferred embodiment, the display circuit also includes an eighth resistor R8, a ninth resistor R9 and a tenth resistor R10, the eighth resistor R8 is arranged between the first LED lamp and the PA11 port of the first control chip U1, the ninth resistor R9 is arranged between the second LED lamp and the PA8 port of the first control chip U1, and the tenth resistor R10 is arranged between the third LED lamp and the PA7 port of the first control chip U1.

[0049] As a preferred implementation, the first control chip U1 is selected as STM32C011F6P6. The first control chip U1 is connected to the ADC sampling circuit to obtain the voltage value of the battery pack, and then display the battery pack power in real time, so that the user can accurately know the remaining power of the battery, thereby bringing convenience to the user.

[0050] As a preferred implementation, the model of the second control chip U2 is SGM2203. Embodiment 2

[0051] The utility model also discloses a low-power battery power display system, comprising the low-power battery power display circuit as described in the first embodiment.

[0052] Therefore, the power display system using the low-power battery power display circuit can effectively reduce the overall power consumption of the system, thereby effectively increasing the battery life, reducing the charging frequency, and extending the battery life. And by pressing a button to turn on the circuit and display the power of the battery pack, it brings convenience to users, is easy to operate, and improves the user experience.

[0053] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" 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, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0054] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A low power consumption battery power display circuit, characterized in that: include, A power supply unit comprising at least one battery pack; A sampling unit, comprising an ADC sampling circuit, one end of which is connected to the energy supply unit, and the ADC sampling circuit samples the voltage of the energy supply unit; A control unit, comprising a first control chip U1, the other end of the sampling unit being connected to the first control chip U1; A voltage stabilizing unit, comprising a voltage stabilizing circuit, the voltage stabilizing circuit being arranged between the energy supply unit and the control unit, the voltage stabilizing circuit comprising a second control chip U2; A switch unit, which is disposed between the energy supply unit and the voltage stabilizing unit, and is used to control the electrical connection between the energy supply unit and the voltage stabilizing unit; The display unit includes a display circuit, wherein the display circuit is connected to the first control chip U1, and the display circuit includes a display light module.

2. A low power consumption battery power display circuit according to claim 1, characterized in that: The switch unit includes a key switch SW1 , one end of the key switch SW1 is connected to the energy supply unit, and the other end of the key switch SW1 is connected to the voltage stabilizing unit.

3. A low power consumption battery power display circuit according to claim 1, characterized in that: The voltage stabilizing circuit also includes a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1 and a first capacitor C1. The first resistor R1 and the second resistor R2 are connected in parallel. One end of the first resistor R1 and the second resistor R2 are connected to the switch unit, and the other end is connected to the input end of the second control chip U2. The output end of the second control chip U2 is connected to the display unit. One end of the third resistor R3 is connected to the input end of the second control chip U2, and the other end of the third resistor R3 is grounded. One end of the first diode D1 is connected to the input end of the second control chip U2, and the other end of the first diode D1 is grounded. One end of the first capacitor C1 is connected to the input end of the second control chip U2.

4. A low power consumption battery power display circuit according to claim 1, characterized in that: The sampling circuit includes a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, which are sequentially arranged between the energy supply unit and the first control chip U1, wherein the sixth resistor R6 is connected to the PA4 port of the first control chip U1.

5. A low power consumption battery power display circuit according to claim 4, characterized in that: The sampling circuit also includes a seventh resistor R7 and a second capacitor C2, one end of the seventh resistor R7 is arranged between the fifth resistor R5 and the sixth resistor R6, and the other end of the seventh resistor R7 is grounded, one end of the second capacitor C2 is arranged between the fifth resistor R5 and the sixth resistor R6, and the other end of the second capacitor C2 is grounded.

6. A low power consumption battery power display circuit according to claim 1, characterized in that: The display circuit includes an RGB LED lamp module, and the RGB LED lamp module includes a first LED lamp, a second LED lamp, and a third LED lamp. The colors of the first LED lamp, the second LED lamp, and the third LED lamp are different.

7. A low power consumption battery power display circuit according to claim 6, characterized in that: The display circuit also includes an eighth resistor R8, a ninth resistor R9 and a tenth resistor R10. The eighth resistor R8 is arranged between the first LED lamp and the PA11 port of the first control chip U1, the ninth resistor R9 is arranged between the second LED lamp and the PA8 port of the first control chip U1, and the tenth resistor R10 is arranged between the third LED lamp and the PA7 port of the first control chip U1.

8. The low power consumption battery capacity display circuit according to claim 1, characterized in that: The model of the first control chip U1 is STM32C011F6P6.

9. A low power consumption battery power display circuit according to claim 1, characterized in that: The model of the second control chip U2 is SGM2203.

10. A low power consumption battery power display system, characterized in that: The invention comprises a low-power consumption battery power display circuit as described in any one of claims 1 to 9.

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