Electric quantity indicating circuit, energy storage power supply and electric device

Abstract

The utility model provides an electric quantity indicating circuit, an energy storage power supply and an electric device. The electric quantity indicating circuit comprises a first resistor, a first indicating module, a second indicating module and a third indicating module, the first end of the first resistor is used for connecting a battery, the second end of the first resistor is connected with the first indication module, the second indication module and the third indication module, and the first indication module and the third indication module are also used for connecting the battery; wherein the first indication module is configured to generate a first indication signal when the power supply voltage of the battery is greater than a first voltage; the second indication module is configured to generate a second indication signal when the power supply voltage is smaller than a second voltage, and the second voltage is smaller than the first voltage; the third indication module is configured to generate a third indication signal when the power supply voltage is larger than the second voltage and smaller than the first voltage. The circuit is simple in structure, and the circuit cost can be reduced.

Description

Technical Field

[0001] The embodiments of the utility model relate to the field of electronic technology, and in particular to a power indicator circuit, an energy storage power supply, and an electric device. Background Art

[0002] With the widespread adoption of portable electronic devices such as smartphones and tablets, as well as the rapid development of new vehicles like electric and hybrid vehicles and renewable energy systems like solar and wind power, batteries (storage batteries) are becoming increasingly important as key energy storage devices. They are widely used in all aspects of daily life and in multiple industrial production scenarios. To ensure the continuous and stable operation of these devices and systems, real-time monitoring of the battery's charge status is crucial. This not only helps prevent sudden shutdowns due to low power, but also optimizes energy management, improving overall operational efficiency and reliability.

[0003] In the prior art, a microcontroller unit (MCU) is usually used to monitor the battery voltage. This requires writing and maintaining more complex software to manage multiple processors and sensors to indicate the current battery charge level, resulting in complex control and high cost for battery voltage status indication. Utility Model Content

[0004] The embodiments of the present utility model provide a power indicator circuit, an energy storage power supply and an electric device, which can reduce circuit structure and cost.

[0005] In a first aspect, an embodiment of the present invention provides a power indication circuit, which includes: a first resistor, a first indication module, a second indication module and a third indication module; the first end of the first resistor is used to connect to a battery, and the second end of the first resistor is connected to the first indication module, the second indication module and the third indication module respectively, and the first indication module and the third indication module are also used to connect to the battery; wherein, the first indication module is configured to generate a first indication signal when the power supply voltage of the battery is greater than the first voltage; the second indication module is configured to generate a second indication signal when the power supply voltage is less than the second voltage, wherein the second voltage is less than the first voltage; the third indication module is configured to generate a third indication signal when the power supply voltage is greater than the second voltage and less than the first voltage.

[0006] In some embodiments, the first indication module includes a first voltage divider unit, a first controllable voltage regulator and a first light-emitting diode; the anode of the first light-emitting diode is connected to the second end of the first resistor, the cathode of the first light-emitting diode is connected to the cathode of the first controllable voltage regulator, the anode of the first controllable voltage regulator is grounded, and the first voltage divider unit is respectively connected to the battery, the first end of the first resistor and the reference end of the first controllable voltage regulator; the first voltage divider unit is configured to divide the power supply voltage and output the first divided voltage to the first controllable voltage regulator, wherein the first divided voltage and the power supply voltage satisfy a first proportional relationship; the first controllable voltage regulator is configured to turn on when the first divided voltage is greater than a first turn-on voltage, so that the first light-emitting diode generates the first indication signal, wherein the first turn-on voltage and the first voltage satisfy the first proportional relationship.

[0007] In some embodiments, the first voltage divider unit includes a resistor R2 and a resistor R3; the first end of the resistor R2 is respectively connected to the battery and the first end of the first resistor, the second end of the resistor R2 is respectively connected to the first end of the resistor R3 and the reference end of the first controllable regulator, and the second end of the resistor R3 is grounded.

[0008] In some embodiments, the third indication module includes a second voltage divider unit, a second controllable voltage regulator and a second light-emitting diode; the anode of the second light-emitting diode is connected to the second end of the first resistor, the cathode of the second light-emitting diode is connected to the cathode of the second controllable voltage regulator, the anode of the second controllable voltage regulator is grounded, and the second voltage divider unit is respectively connected to the battery, the first end of the first resistor and the reference end of the second controllable voltage regulator; the second voltage divider unit is configured to divide the power supply voltage and output the second divided voltage to the second controllable voltage regulator, wherein the second divided voltage and the power supply voltage satisfy a second proportional relationship; the second controllable voltage regulator is configured to enable the second light-emitting diode to generate the third indication signal when the second divided voltage is greater than the second turn-on voltage, wherein the second turn-on voltage and the second voltage satisfy the second proportional relationship, and the turn-on voltage of the first light-emitting diode is less than the turn-on voltage of the second light-emitting diode.

[0009] In some embodiments, the second voltage dividing unit includes a resistor R4 and a resistor R5; the first end of the resistor R4 is connected to the battery and the first end of the first resistor, the second end of the resistor R4 is respectively connected to the first end of the resistor R5 and the reference end of the second controllable regulator, and the second end of the resistor R5 is grounded.

[0010] In some embodiments, the resistor R2 , the resistor R3 , the resistor R4 , and the resistor R5 are all adjustable resistors.

[0011] In some embodiments, the second indication module includes a voltage stabilizing unit and a third light-emitting diode; the anode of the third light-emitting diode is connected to the second end of the first resistor, the cathode of the third light-emitting diode is connected to the first end of the voltage stabilizing unit, and the second end of the voltage stabilizing unit is grounded; the voltage stabilizing unit is configured to be turned on when the power supply voltage is less than the second voltage, so that the third light-emitting diode generates the second indication signal.

[0012] In some embodiments, the voltage stabilizing unit includes a voltage stabilizing diode D1 ; a cathode of the voltage stabilizing diode D1 is connected to the second end of the third light emitting diode, and an anode of the voltage stabilizing diode D1 is grounded.

[0013] In a second aspect, an embodiment of the present invention further provides an energy storage power supply, which includes: a battery, and a power indicator circuit as described in any embodiment of the first aspect; the battery is connected to the power indicator circuit.

[0014] In a third aspect, an embodiment of the present invention further provides an electrical device, which includes a load and an energy storage power supply as described in any one embodiment of the second aspect; the energy storage power supply is used to supply power to the load.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Unlike the prior art, the present invention provides a power indicator circuit, an energy storage power supply, and an electrical device, comprising a first resistor, a first indicator module, a second indicator module, and a third indicator module; the first end of the first resistor is used to connect to a battery, and the second end of the first resistor is connected to the first indicator module, the second indicator module, and the third indicator module, respectively, and the first indicator module and the third indicator module are also used to connect to a battery; wherein the first indicator module is configured to generate a first indication signal when the power supply voltage of the battery is greater than the first voltage; the second indicator module is configured to generate a second indication signal when the power supply voltage is less than a second voltage, wherein the second voltage is less than the first voltage; and the third indicator module is configured to generate a third indication signal when the power supply voltage is greater than the second voltage but less than the first voltage. This circuit structure is simple and can reduce circuit costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings. These exemplified descriptions do not constitute limitations on the embodiments. Elements / modules and steps with the same reference numerals in the drawings are represented as similar elements / modules and steps. Unless otherwise stated, the figures in the drawings do not constitute a scale limitation.

[0017] Figure 1 This is a structural block diagram of a power indicator circuit provided by an embodiment of the utility model;

[0018] Figure 2 This is a circuit structure diagram of a power indicator circuit provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention. These modifications and improvements are all within the scope of protection of the present invention.

[0020] For ease of understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those generally understood by those skilled in the art in the field of the present application. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0021] It should be noted that, unless they conflict, the various features of the embodiments of the present invention may be combined with each other and are all within the scope of protection of this application. Furthermore, although the functional modules are divided in the device schematic, in some cases, the module division may be different from that in the device. Furthermore, the terms "first," "second," and the like used herein do not limit the order of data or execution; they are merely used to distinguish between identical or similar items with substantially the same functions and effects.

[0022] To reduce the cost and complexity of battery level indicator circuits, LEDs are often used to visually display battery charge levels. Their advantages include intuitiveness, low power consumption, and low cost, making them widely used in both portable and stationary battery-powered devices. However, traditional LED indicator circuits have slow response times, which can affect battery level determination during sudden voltage drops. Some designs are complex and unsuitable for compact devices, resulting in continuous power consumption and reduced battery life. Furthermore, these LEDs are typically designed for specific voltages and are difficult to adapt to different battery types and specifications, limiting their use in various application scenarios.

[0023] In order to improve the above problems, the embodiments of the present invention provide a power indication circuit, an energy storage power supply and an electrical device. Different power indications can be achieved using a hardware structure without the need for an MCU. This can solve the problems of complex structure and high cost of existing battery power indication circuits, and can provide a more accurate, simple and low-energy power indication, while having higher compatibility and ease of use.

[0024] In the first aspect, the present invention provides a power indicator circuit. Figure 1 The power indication circuit 100 includes: a first resistor R1, a first indication module 110, a second indication module 120 and a third indication module 130; the first end of the first resistor R1 is used to connect to the battery 200, and the second end of the first resistor R1 is connected to the first indication module 110, the second indication module 120 and the third indication module 130 respectively, and the first indication module 110 and the third indication module 130 are also used to connect to the battery 200; wherein, the first indication module 110 is configured to generate a first indication signal when the power supply voltage of the battery 200 is greater than the first voltage; the second indication module 120 is configured to generate a second indication signal when the power supply voltage is less than the second voltage, wherein the second voltage is less than the first voltage; the third indication module 130 is configured to generate a third indication signal when the power supply voltage is greater than the second voltage and less than the first voltage.

[0025] By way of example and not limitation, the first, second, and third indication signals are optical signals, and the first, second, and third indication modules 110, 120, and 130 are each provided with a light-emitting device as a source of the corresponding indication signal, such as a light-emitting diode that generates light of different colors. In practical applications, the first, second, and third indication signals may be acoustic signals, and the first, second, and third indication modules 110, 120, and 130 are each provided with an acoustic device as a source of the corresponding indication signal, such as a buzzer that generates light of different frequencies.

[0026] The battery 200 is a device for storing energy, which may include one battery cell or at least two battery cells connected in series and / or in parallel. The power supply voltage of the battery 200 refers to the voltage between the positive electrode and the negative electrode of the battery 200.

[0027] In the power indicator circuit 100, the first resistor R1 reduces the voltage of the battery 200 to a voltage range suitable for the operation of the subsequent indicator module, and can limit the current during the circuit conduction process to protect the components in the circuit and improve the safety of the circuit during operation.

[0028] Furthermore, when the power supply voltage of the battery 200 is greater than the first voltage, the first indicator module 110 operates to generate a first indicator signal; when the power supply voltage of the battery 200 is greater than the second voltage and less than the first voltage, the third indicator module 130 operates to generate a third indicator signal; and when the voltage of the battery 200 is less than the second voltage, the second indicator module 120 operates to generate a second indicator signal. It can be seen that by designing three indicator modules, the circuit can generate different indicator signals (such as light signals or sound signals) according to different power supply voltage ranges, allowing the user to intuitively understand the power status of the battery 200. For example, the first voltage can be the voltage value corresponding to the maximum allowable power of the battery 200, and the second voltage can be the voltage value corresponding to the minimum allowable power of the battery 200. In this way, the current voltage status of the battery 200 can be intuitively known through the indicator signals of the above circuit, such as the third indicator signal indicating that the current battery 200 voltage is normal, the second indicator signal indicating that the current battery 200 voltage is undervoltage and needs to be charged, and the first indicator signal indicating that the current battery 200 voltage is overvoltage, allowing the user to arrange the use of the battery 200 in a reasonable manner.

[0029] It can be seen that in the power indicator circuit 100, different power indications can be achieved using a hardware circuit structure without using an MCU, which can solve the problem of complex structure and high cost of the existing battery 200 power indicator circuit 100.

[0030] In some of these embodiments, see Figure 2 The first indication module 110 includes a first voltage divider unit 111, a first controllable voltage regulator U1, and a first light-emitting diode LED1. The anode of the first light-emitting diode LED1 is connected to the second end of the first resistor R1, the cathode of the first light-emitting diode LED1 is connected to the cathode of the first controllable voltage regulator U1, and the anode of the first controllable voltage regulator U1 is grounded. The first voltage divider unit 111 is respectively connected to the battery 200, the first end of the first resistor R1, and the reference end of the first controllable voltage regulator U1. The first voltage divider unit 111 is configured to divide the power supply voltage and output a first divided voltage to the first controllable voltage regulator U1, wherein the ratio between the first divided voltage and the power supply voltage is a first ratio. The first controllable voltage regulator U1 is configured to turn on when the first divided voltage is greater than a first turn-on voltage, causing the first light-emitting diode LED1 to generate a first indication signal, wherein the ratio between the first turn-on voltage and the first voltage is the first ratio.

[0031] The first on-state voltage can be set as a reference voltage of the first controllable voltage regulator U1. The first on-state voltage can be set according to the actual application scenario and is not specifically limited in this application. For example, in some implementations, the first controllable voltage regulator U1 can be a TL431 controllable precision voltage regulator with a reference voltage of 2.5V. The first on-state voltage can be set to 2.5V.

[0032] The first voltage dividing unit 111 can divide the power supply voltage by voltage distribution between resistors (or other voltage dividing elements). Figure 2 , the first voltage divider unit 111 includes a resistor R2 and a resistor R3; the first end of the resistor R2 is connected to the battery 200 and the first end of the first resistor R1, respectively, the second end of the resistor R2 is connected to the first end of the resistor R3 and the reference terminal of the first controllable voltage regulator U1, respectively, and the second end of the resistor R3 is grounded. At this time, the ratio between the first divided voltage and the power supply voltage is R3 / (R3+R2), and the ratio between the first conduction voltage and the first voltage is also R3 / (R3+R2), where R2 is the resistance value of the resistor R2, and R3 is the resistance value of the resistor R3. The number and resistance values ​​of the resistors included in the first voltage divider unit 111 can be determined according to actual needs and are not limited here.

[0033] The first light emitting diode LED1 is a semiconductor device that can convert electrical energy into light energy, and emits light when current passes through the PN junction of the first light emitting diode.

[0034] In the first indication module 110, when the power supply voltage of the battery 200 is greater than the first voltage, the first divided voltage will be greater than the first conduction voltage. At this time, the first controllable regulator U1 is turned on, and the battery 200, the first resistor R1, the first light-emitting diode LED1, and the first controllable regulator U1 form a path, and the first light-emitting diode LED1 emits light.

[0035] Since the controllable voltage regulator has high precision, good temperature stability, and low current consumption in static state, usually at the microampere level, that is, it has low power consumption characteristics, the first controllable voltage regulator U1 is applied to the first indication module 110. This can improve the reliability of the first indication module 110 and reduce circuit power consumption.

[0036] In some of these embodiments, see Figure 2The third indication module 130 includes a second voltage divider 131, a second controllable voltage regulator U2, and a second light-emitting diode LED2. The anode of the second light-emitting diode LED2 is connected to the second end of the first resistor R1, the cathode of the second light-emitting diode LED2 is connected to the cathode of the second controllable voltage regulator U2, and the anode of the second controllable voltage regulator U2 is grounded. The second voltage divider 131 is connected to the battery 200, the first end of the first resistor R1, and the reference end of the second controllable voltage regulator U2, respectively. The second voltage divider 131 is configured to divide the power supply voltage and output the second divided voltage to the second controllable voltage regulator U2, wherein the second divided voltage satisfies a second proportional relationship with the power supply voltage. The second controllable voltage regulator U2 is configured to cause the second light-emitting diode LED2 to generate a third indication signal when the second divided voltage is greater than the first conduction voltage, wherein the first conduction voltage and the second voltage satisfy a second proportional relationship, and the conduction voltage of the first light-emitting diode LED1 is less than the conduction voltage of the second light-emitting diode LED2.

[0037] The second on-state voltage can be set as a reference voltage for the second controllable voltage regulator U2. The second on-state voltage can be set according to the actual application scenario and is not specifically limited in this application. For example, in some embodiments, the second controllable voltage regulator U2 can be a TL431 controllable precision voltage regulator with a reference voltage of 2.5V. The second on-state voltage can be set to 2.5V, which is equal to the first on-state voltage.

[0038] The second voltage dividing unit 131 can divide the power supply voltage by voltage distribution between resistors (or other voltage dividing elements). Figure 2 The second voltage divider unit 131 includes resistors R4 and R5. The first end of resistor R4 is connected to the battery 200 and the first end of the first resistor R1. The second end of resistor R4 is connected to the first end of resistor R5 and the reference terminal of the second controllable voltage regulator U2, respectively. The second end of resistor R5 is grounded. In this case, the ratio of the second divided voltage to the power supply voltage is R5 / (R5+R4), where R4 is the resistance value of resistor R4 and R5 is the resistance value of resistor R5. The number and resistance values ​​of the resistors included in the second voltage divider unit 131 can be determined according to actual needs and are not limited here.

[0039] The second light emitting diode LED2 is a semiconductor device that can convert electrical energy into light energy, and emits light when current passes through the PN junction of the second light emitting diode.

[0040] In the battery indicator circuit 100, when the battery 200 is greater than the second voltage and less than the first voltage, the second divided voltage will be greater than the second turn-on voltage. At this time, the second controllable voltage regulator U2 is turned on, and the battery 200, the first resistor R1, the second light-emitting diode LED2, and the second controllable voltage regulator U2 form a path, and the second light-emitting diode LED2 emits light. When the battery 200 is greater than the first voltage, the first divided voltage is greater than the first turn-on voltage, and the second divided voltage is greater than the second turn-on voltage. However, because the turn-on voltage of the first light-emitting diode LED1 is less than the turn-on voltage of the second light-emitting diode LED2, the battery 200, the first resistor R1, the first light-emitting diode LED1, and the first controllable voltage regulator U1 form a path. The first light-emitting diode LED1 and the first controllable voltage regulator U1 clamp the voltage at the second end of the first resistor R1 to the turn-on voltage drop between the two. This voltage drop is insufficient to turn on the second light-emitting diode LED2. In other words, the second light-emitting diode LED2 is turned off, and only the first light-emitting diode LED1 emits light.

[0041] Similarly, the circuit applies the second controllable voltage regulator U2 to the third indication module 130 , which can improve the reliability of the third indication module 130 and reduce the power consumption of the circuit.

[0042] In some embodiments, the resistor R2 , the resistor R3 , the resistor R4 , and the resistor R5 are all adjustable resistors.

[0043] An adjustable resistor refers to a resistor whose resistance value can be adjusted. It usually consists of three parts: a fixed resistor, an adjustable resistor, and a knob (or slider). In an adjustable resistor, the resistance value can be adjusted by a knob or slider. In this way, the user can flexibly adjust the resistance value to adapt to different voltage indication ranges. This not only meets the diverse needs for power indication in different application scenarios, but also makes the circuit more adjustable when dealing with power supply voltage fluctuations.

[0044] In some of these embodiments, see Figure 2 The second indication module 120 includes a voltage stabilizing unit 121 and a third light-emitting diode LED3; the anode of the third light-emitting diode LED3 is connected to the second end of the first resistor R1, the cathode of the third light-emitting diode LED3 is connected to the first end of the voltage stabilizing unit 121, and the second end of the voltage stabilizing unit 121 is grounded; the voltage stabilizing unit 121 is configured to be turned on when the power supply voltage is less than the second voltage, so that the third light-emitting diode LED3 generates a second indication signal.

[0045] The third light emitting diode LED3 is a semiconductor device that can convert electrical energy into light energy. When current passes through the PN junction of the third light emitting diode, it will emit light.

[0046] The voltage stabilizing unit 121 has a reverse breakdown voltage. When the power supply voltage is less than the second voltage and the voltage at the second end of the first resistor R1 reaches the reverse breakdown voltage of the voltage stabilizing unit 121, the voltage stabilizing unit 121 breaks down and conducts. At this time, the battery 200, the first resistor R1, the third light-emitting diode LED3, and the second controllable voltage regulator U2 form a pathway, and the third light-emitting diode LED3 emits light. This ensures that when the power supply voltage is less than the second voltage, the third light-emitting diode LED3 emits the second indication signal. When the power supply voltage is less than the second voltage and the voltage at the second end of the first resistor R1 does not reach the reverse breakdown voltage of the voltage stabilizing unit 121, the voltage stabilizing unit 121 fails to break down and conduct. At this time, the third light-emitting diode LED3 fails to emit light. In other words, all three light-emitting diodes are unlit, indicating that the battery is severely undervoltage.

[0047] Specifically, in some embodiments, see Figure 2 The voltage stabilizing unit 121 includes a voltage stabilizing diode D1. The cathode of the voltage stabilizing diode D1 is connected to the second terminal of the third light-emitting diode LED3, and the anode of the voltage stabilizing diode D1 is grounded. The voltage stabilizing diode is also a Zener diode. By way of example, and not limitation, the reverse breakdown voltage of the voltage stabilizing diode can be 7V. The specific reverse breakdown voltage value can be determined based on the performance parameters of the voltage stabilizing unit 121 in actual applications.

[0048] The following combination Figure 2 The illustrated embodiment details the specific operation of the power indicator circuit 100 provided by the embodiment of the present invention. The first voltage is 14V, the second voltage is 11V, the first light-emitting diode LED1 is a red light-emitting diode, the second light-emitting diode LED2 is a green light-emitting diode, and the third light-emitting diode is a yellow light-emitting diode. The first end of the first resistor R1 is connected to the positive electrode of the battery 200, and the second end of the resistor R3, the anode of the first controllable voltage regulator U1, the anode of the voltage regulator diode D1, the anode of the second controllable voltage regulator U2, the second end of the resistor R5, and the negative electrode of the battery 200 are all grounded.

[0049] When the power supply voltage of battery 200 is less than 11V, the first and second divided voltages still cannot reach the conduction voltage of first controllable voltage regulator U1 and second controllable voltage regulator U2. At this time, first controllable voltage regulator U1 and second controllable voltage regulator U2 are turned off, and the first light-emitting diode LED1 and second light-emitting diode LED2 are not illuminated. However, when the voltage value at the second end of first resistor R1 reaches the reverse breakdown voltage value of voltage regulator D1, voltage regulator D1 is broken down and turned on. Battery 200, first resistor R1, third light-emitting diode LED3, and voltage regulator D1 form a circuit, and third light-emitting diode LED3 emits yellow light, indicating that battery 200 is currently undervoltage. When the power supply voltage of battery 200 is less than the sum of the conduction voltage drops of third light-emitting diode LED3 and voltage regulator D1, all light-emitting diodes are turned off and do not emit light, indicating that battery 200 is currently severely undervoltage.

[0050] When the power supply voltage of the battery 200 is greater than 11V and less than 14V, the second divided voltage is greater than the turn-on voltage of the second controllable voltage regulator U2, and the first divided voltage does not reach the turn-on voltage of the first controllable voltage regulator U2, the second controllable voltage regulator U2 is turned on, and the battery 200, the first resistor R1, the second light-emitting diode LED2, and the second controllable voltage regulator U2 form a path, and the second light-emitting diode LED2 and the second controllable voltage regulator U2 clamp the voltage at the second end of the first resistor R1 to the turn-on voltage drop between the two. The voltage drop is not enough to turn on the Zener diode D1. At this time, the Zener diode D1 is cut off. At this time, only the second light-emitting diode LED2 emits green light, indicating that the current battery voltage is normal.

[0051] When the power supply voltage of the battery 200 is greater than 14V, the first divided voltage is greater than the first turn-on voltage and the second divided voltage is greater than the second turn-on voltage. However, since the turn-on voltage of the first light-emitting diode LED1 is lower than the turn-on voltage of the second light-emitting diode LED2, the battery 200, the first resistor R1, the first light-emitting diode LED1, and the first controllable voltage regulator U1 form a path, and the first light-emitting diode LED1 and the first controllable voltage regulator U1 clamp the voltage at the second end of the first resistor R1 to the turn-on voltage drop between the two. This voltage drop is insufficient to turn on the second light-emitting diode LED2 and the Zener diode D1. That is, the second light-emitting diode LED2 and the third light-emitting diode LED3 are turned off. At this time, only the first light-emitting diode LED1 emits red light, indicating that the current battery voltage is overvoltage.

[0052] In this embodiment, the battery indicator circuit 100 has a simple structure and can intuitively display voltage by selecting light-emitting diodes with different conduction voltages and combining them with circuit components such as Zener diodes and controllable voltage regulators. The circuit structure is simple. The use of a controllable voltage regulator offers advantages such as high precision and low energy consumption, improving circuit accuracy and reducing power consumption. Furthermore, the resistor value within the voltage divider unit is adjustable, providing greater compatibility and ease of use.

[0053] It should be noted that the voltage range setting in this embodiment is only for illustrative purposes, so as to more intuitively illustrate the technical solution of this application, and does not constitute a limitation on the scope of protection of this application. The specific voltage range can be set according to actual needs or actual application scenarios, and the parameters in the circuit can be adjusted accordingly.

[0054] In a second aspect, an embodiment of the present invention further provides an energy storage power supply, which includes: a battery 200 and a power indication circuit 100 as in any one embodiment of the first aspect; the battery 200 is connected to the power indication circuit 100.

[0055] In this embodiment, the battery indicator circuit 100 has the same structure and function as the battery indicator circuit 100 described in any embodiment of the first aspect, which will not be described in detail. The structure of the battery 200 can refer to the prior art and is not limited here.

[0056] In a third aspect, an embodiment of the present invention further provides an electrical device, which includes a load and an energy storage power supply as in any one embodiment of the second aspect; the energy storage power supply is used to supply power to the load.

[0057] In this embodiment, the power indicator circuit has the same structure and function as the power indicator circuit described in any embodiment of the first aspect, and will not be described in detail here. The power-consuming device can be an electronic device, a vehicle, or other device.

[0058] It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and 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 may be selected based on actual needs to achieve the objectives of this embodiment.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power indicator circuit, characterized in that: include: a first resistor, a first indication module, a second indication module, and a third indication module; The first end of the first resistor is used to connect to the battery, and the second end of the first resistor is connected to the first indication module, the second indication module and the third indication module respectively, and the first indication module and the third indication module are also used to connect to the battery; Wherein, the first indication module is configured to generate a first indication signal when the power supply voltage of the battery is greater than a first voltage; The second indication module is configured to generate a second indication signal when the power supply voltage is less than a second voltage, wherein the second voltage is less than the first voltage; The third indication module is configured to generate a third indication signal when the power supply voltage is greater than the second voltage and less than the first voltage.

2. The power indicator circuit according to claim 1, characterized in that: The first indication module includes a first voltage dividing unit, a first controllable voltage regulator and a first light emitting diode; The anode of the first light-emitting diode is connected to the second end of the first resistor, the cathode of the first light-emitting diode is connected to the cathode of the first controllable voltage regulator, the anode of the first controllable voltage regulator is grounded, and the first voltage divider unit is respectively connected to the battery, the first end of the first resistor, and the reference end of the first controllable voltage regulator; The first voltage dividing unit is configured to divide the power supply voltage and output a first divided voltage to the first controllable voltage regulator, wherein the first divided voltage satisfies a first proportional relationship with the power supply voltage; The first controllable regulator is configured to be turned on when the first divided voltage is greater than a first turn-on voltage, causing the first light-emitting diode to generate the first indication signal, wherein the first turn-on voltage satisfies the first proportional relationship with the first voltage.

3. The power indicator circuit according to claim 2, characterized in that: The first voltage dividing unit includes a resistor R2 and a resistor R3; The first end of the resistor R2 is connected to the battery and the first end of the first resistor respectively, the second end of the resistor R2 is connected to the first end of the resistor R3 and the reference end of the first controllable regulator respectively, and the second end of the resistor R3 is grounded.

4. The power indicator circuit according to claim 3, characterized in that: The third indication module includes a second voltage dividing unit, a second controllable voltage regulator and a second light emitting diode; The anode of the second light-emitting diode is connected to the second end of the first resistor, the cathode of the second light-emitting diode is connected to the cathode of the second controllable regulator, the anode of the second controllable regulator is grounded, and the second voltage divider unit is respectively connected to the battery, the first end of the first resistor, and the reference end of the second controllable regulator; The second voltage dividing unit is configured to divide the power supply voltage and output a second divided voltage to the second controllable voltage regulator, wherein the second divided voltage satisfies a second proportional relationship with the power supply voltage; The second controllable regulator is configured to cause the second light-emitting diode to generate the third indication signal when the second divided voltage is greater than the second turn-on voltage, wherein the second turn-on voltage and the second voltage satisfy the second proportional relationship, and the turn-on voltage of the first light-emitting diode is less than the turn-on voltage of the second light-emitting diode.

5. The power indicator circuit according to claim 4, characterized in that: The second voltage dividing unit includes a resistor R4 and a resistor R5; The first end of the resistor R4 is connected to the battery and the first end of the first resistor, the second end of the resistor R4 is respectively connected to the first end of the resistor R5 and the reference end of the second controllable regulator, and the second end of the resistor R5 is grounded.

6. The power indicator circuit according to claim 5, characterized in that: The resistor R2 , the resistor R3 , the resistor R4 , and the resistor R5 are all adjustable resistors.

7. The power indicator circuit according to any one of claims 1 to 6, characterized in that: The second indication module includes a voltage stabilizing unit and a third light emitting diode; An anode of the third light-emitting diode is connected to the second end of the first resistor, a cathode of the third light-emitting diode is connected to the first end of the voltage stabilizing unit, and a second end of the voltage stabilizing unit is grounded; The voltage stabilizing unit is configured to be turned on when the power supply voltage is less than the second voltage, so as to enable the third light emitting diode to generate the second indication signal.

8. The power indicator circuit according to claim 7, characterized in that: The voltage stabilizing unit includes a voltage stabilizing diode D1; The cathode of the voltage stabilizing diode D1 is connected to the second end of the third light emitting diode, and the anode of the voltage stabilizing diode D1 is grounded.

9. An energy storage power supply, characterized in that: include: A battery, and a battery indicator circuit according to any one of claims 1 to 8; The battery is connected to the power indicator circuit.

10. An electrical device, characterized in that: comprising a load and the energy storage power supply according to claim 9; The energy storage power supply is used to supply power to the load.

Images