Static low-power-consumption dormancy control circuit and battery device

Abstract

The utility model discloses a static low-power-consumption dormancy control circuit and a battery device. The static low-power-consumption dormancy control circuit comprises a main control module, a battery power supply module, a voltage conversion module, a self-locking module, a battery voltage detection module and a current detection module. The battery power supply module is electrically connected with the voltage conversion module, the battery voltage detection module and the self-locking module. The voltage conversion module is electrically connected with the current detection module, the self-locking module and the main control module, the main control module is electrically connected with the self-locking module, and the current detection module is electrically connected with an output load. According to the utility model, the static power consumption of the battery device can be effectively reduced, and the standby time of the battery device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a static low-power sleep control circuit and a battery device. Background Art

[0002] Batteries are everywhere in existing technology, from power banks to outdoor power supplies to sensors in electric bicycles and cars. These applications are in standby mode most of the time, but even in standby mode, precious battery life is lost.

[0003] Maximizing available battery capacity helps in system design, that is, using the same battery to support more instrument readings and data transmission, maintaining a longer service life, or a small battery with the same service life, but the increase in battery capacity is limited after all. Low IQ technology can extend battery life without affecting system performance. To achieve high battery efficiency in standby mode, power solutions are required to strictly manage power output while maintaining ultra-low current, which can increase power density while achieving low EM I, minimize interference with other system components, and simplify engineers' design and quality assessment processes, realize more system functions, and reduce system costs. In addition, reducing or shifting noise can simplify the power chain of precision analog applications and improve system reliability.

[0004] IQ, or no-load quiescent current, is the most important bottleneck to overcome in the load cycle of low-power systems. Reducing IQ introduces new challenges because it creates trade-offs in transient noise performance, chip package area, and output power range. To break the barrier of low IQ and significantly reduce IQ without sacrificing performance or area, it is necessary to re-examine silicon technology and circuit technology. Minimizing IQ is a key factor in reducing power consumption and managing battery life. In existing technologies, many applications use low-power, always-on power supplies (batteries). Only by using ultra-low leakage process technology and new control topologies can the battery operating time be extended; fast wake-up comparators and zero IQ feedback control when fast response is required can achieve fast dynamic response without affecting low-power performance. Of course, using smaller form factors, including smaller resistors and capacitors, can the board be integrated into space-constrained applications.

[0005] Therefore, providing a new control topology that can achieve a static power consumption of the entire system close to zero is very important for multi-string battery-powered industrial applications such as energy storage and electric bicycles, as well as energy storage applications that require long standby time. It is an urgent problem to be solved by technicians in this field. Utility Model Content

[0006] The purpose of the present application is to provide a static low-power sleep control circuit and a battery device. In this solution, only a small pulse signal is required to start the power supply system. After the output load stops working, the current detection module detects the output load current. When the output load current is continuously detected to be less than the normal load current for a preset time, the main control module controls the power supply system to shut down, effectively reducing static power consumption and extending the standby time of the battery device.

[0007] In order to solve the above technical problems, the present application provides a static low-power sleep control circuit, including a main control module, a battery power supply module, a voltage conversion module, a self-locking module, a battery voltage detection module and a current detection module;

[0008] The battery power supply module is electrically connected to the voltage conversion module, the battery voltage detection module and the self-locking module respectively;

[0009] The voltage conversion module is electrically connected to the current detection module, the self-locking module and the main control module respectively, the main control module is electrically connected to the self-locking module, and the current detection module is electrically connected to the output load.

[0010] Preferably, the static low-power sleep control circuit further includes a touch key module;

[0011] The touch button module is electrically connected to the main control module, the battery power supply module and the self-locking module respectively.

[0012] Preferably, the current detection module includes an amplifier, a first resistor, a second resistor, a third resistor and a fourth resistor;

[0013] The first end of the first resistor is electrically connected to the output load, the second end of the first resistor is electrically connected to the first end of the second resistor and the in-phase input terminal of the amplifier, the second end of the second resistor is grounded, the first end of the third resistor is electrically connected to the output load, the second end of the third resistor is electrically connected to the first end of the fourth resistor and the inverting input terminal of the amplifier, and the second end of the fourth resistor is electrically connected to the output terminal of the amplifier and the main control module.

[0014] Preferably, the current detection module further includes a first capacitor and a second capacitor;

[0015] The first end of the first capacitor is electrically connected to the non-inverting input terminal of the amplifier, the second end of the first capacitor is electrically connected to the inverting input terminal of the amplifier, the first end of the second capacitor is electrically connected to the power supply terminal of the amplifier, and the second end of the second capacitor is grounded.

[0016] Preferably, the battery voltage detection module includes a fifth resistor and a sixth resistor;

[0017] The first end of the fifth resistor is electrically connected to the battery power supply module, the second end of the fifth resistor is electrically connected to the main control module and the first end of the sixth resistor respectively, and the second end of the sixth resistor is grounded.

[0018] Preferably, the voltage conversion module includes a DC conversion unit and a voltage stabilization unit;

[0019] The battery power supply module is electrically connected to the DC conversion unit, and the DC conversion unit is electrically connected to the self-locking module, the voltage stabilizing unit and the current detection module respectively.

[0020] Preferably, the touch key module includes a key and a seventh resistor;

[0021] The first end of the button is electrically connected to the battery power supply module and the self-locking module respectively, the second end of the button is electrically connected to the first end of the seventh resistor, and the second end of the seventh resistor is electrically connected to the self-locking module.

[0022] Preferably, the self-locking module includes a first MOS tube, a second MOS tube, a first triode, a second triode and a first diode;

[0023] The base of the first transistor is electrically connected to the touch key module, the drain of the first MOS transistor, the cathode of the first diode, the gate of the second MOS transistor and the collector of the second transistor respectively; the collector of the first transistor is electrically connected to the battery power supply module and the base of the second transistor respectively; the emitter of the first transistor is electrically connected to the battery power supply module; the emitter of the first transistor is grounded; the drain of the second MOS transistor is electrically connected to the battery power supply module; the gate of the first MOS transistor is electrically connected to the main control module; the source of the first MOS transistor, the source of the second MOS transistor and the anode of the first diode are grounded.

[0024] In order to solve the above technical problems, the present application provides a battery device, including the above-mentioned static low-power sleep control circuit.

[0025] A static low-power sleep control circuit and battery device of the utility model have the following beneficial effects. A static low-power sleep control circuit disclosed in the utility model includes a main control module, a battery power supply module, a voltage conversion module, a self-locking module, a battery voltage detection module and a current detection module; the battery power supply module is electrically connected to the voltage conversion module, the battery voltage detection module and the self-locking module respectively; the voltage conversion module is electrically connected to the current detection module, the self-locking module and the main control module respectively, the main control module is electrically connected to the self-locking module, and the current detection module is electrically connected to the output load. The present application can monitor the output current of the output load in real time, and through the cooperation of the main control module and the self-locking module, the system power supply output is turned off after the output load is turned off. Therefore, the utility model can effectively reduce the static power consumption of the battery device and extend the standby time of the battery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0027] Figure 1 It is a schematic diagram of the principle of a static low-power sleep control circuit of a preferred embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the principle of a static low-power sleep control circuit of a preferred embodiment of the utility model;

[0029] Figure 3 This is a circuit schematic diagram of a current detection module of a static low-power sleep control circuit of a preferred embodiment of the utility model;

[0030] Figure 4 It is a circuit schematic diagram of a main control module and a voltage detection module of a static low-power sleep control circuit of a preferred embodiment of the utility model;

[0031] Figure 5 This is a circuit schematic diagram of a voltage stabilizing unit of a static low-power sleep control circuit of a preferred embodiment of the utility model;

[0032] Figure 6 The present invention is a circuit schematic diagram of a touch key module and a self-locking module of a static low-power sleep control circuit according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0033] The core of this application is to provide a static low-power sleep control circuit and battery device. In this solution, only a small pulse signal is required to start the power supply system. After the output load stops working, the current detection module detects the output load current. When the output load current is continuously detected to be less than the normal load current for a preset time, the main control module controls the power supply system to shut down, effectively reducing static power consumption and extending the standby time of the battery device.

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] See also Figure 1 , Figure 1 A schematic diagram of a static low-power sleep control circuit provided in the present application, comprising a main control module 1, a battery power supply module 2, a voltage conversion module 3, a self-locking module 4, a battery voltage detection module 5 and a current detection module 6;

[0036] The battery power supply module 2 is electrically connected to the voltage conversion module, the battery voltage detection module 5 and the self-locking module 4 respectively;

[0037] The voltage conversion module 3 is electrically connected to the current detection module 6 , the self-locking module 4 and the main control module 1 respectively; the main control module 1 is electrically connected to the self-locking module 4 ; and the current detection module 6 is electrically connected to the output load.

[0038] In existing technologies, many applications use low-power, always-on power supplies (batteries). Only by using ultra-low leakage process technology and new control topologies can the battery operating time be extended; fast wake-up comparators and zero IQ feedback control when fast response is required can achieve fast dynamic response without affecting low-power performance. Of course, using smaller form factors, including smaller resistors and capacitors, can the circuit board be integrated into space-constrained applications.

[0039] In view of the above shortcomings, in the present application, static power consumption control of the battery device is achieved through the cooperation of the main control module 1, the battery power supply module 2, the voltage conversion module 3, the self-locking module 4, the battery voltage detection module 5 and the current detection module 6.

[0040] Specifically, the main control module 1 is set as an MCU (Microcontroller Unit), also known as a single chip microcomputer or a single chip microcomputer, which appropriately reduces the frequency and specifications of the central processing unit (CPU), and integrates peripheral interfaces such as memory, counter, USB, A / D conversion, UART, PLC, DMA, and even LCD drive circuits on a single chip to form a chip-level computer. In this embodiment, the model of the main control module 1 is not specifically limited.

[0041] Specifically, in the present embodiment, the battery power supply module 2 is used to provide a voltage energy storage output, and the voltage conversion module 3 is used to step down and convert the energy storage voltage of the battery power supply module 2 to supply each circuit module with a rated voltage; the battery voltage detection module 5 is used to detect the power supply battery voltage. If the power supply battery voltage is lower than a preset value, the self-locking module 4 is released and the enable output of the voltage conversion module 3 is turned off; the current detection module 6 is used to detect the output current of the output load. If the output current of the output load is lower than the preset value for a certain period of time, the self-locking module 4 is released and the enable output of the voltage conversion module 3 is turned off, and the static power consumption of the system is low.

[0042] Therefore, in this solution, only a small pulse signal is needed to start the power supply system. After the output load stops working, the current detection module 6 detects the output load current. When the output load current is continuously detected to be less than the normal load current for a preset time, the main control module 1 controls the power supply system to shut down, effectively reducing static power consumption and extending the standby time of the battery device.

[0043] In summary, the present application provides a static low-power sleep control circuit, which includes a main control module 1, a battery power supply module 2, a voltage conversion module 3, a self-locking module 4, a battery voltage detection module 5 and a current detection module 6 in this solution; the battery power supply module 2 is electrically connected to the voltage conversion module, the battery voltage detection module 5 and the self-locking module 4 respectively; the voltage conversion module 3 is electrically connected to the current detection module 6, the self-locking module 4 and the main control module 1 respectively, the main control module 1 is electrically connected to the self-locking module 4, and the current detection module 6 is electrically connected to the output load. The present application can monitor the output current of the output load in real time, and through the cooperation of the main control module and the self-locking module, after the output load is turned off, the system power supply output is turned off. Therefore, the utility model can effectively reduce the static power consumption of the battery device and extend the standby time of the battery device.

[0044] Based on the above embodiments:

[0045] Please refer to Figure 2 , Figure 2A schematic diagram of a static low-power sleep control circuit provided in the present application.

[0046] As a preferred embodiment, a static low-power sleep control circuit further includes a touch key module 7;

[0047] The touch button module 7 is electrically connected to the main control module 1 , the battery power supply module 2 and the self-locking module 4 respectively.

[0048] Specifically, in this embodiment, the touch key module 7 is used to receive an external key signal, control the self-locking module to achieve state locking or releasing, and thus control the disconnection or conduction of the voltage output function of the voltage conversion module 3 .

[0049] Please refer to Figure 3 , Figure 3 A circuit schematic diagram of a current detection module provided in this application.

[0050] As a preferred embodiment, the current detection module 6 includes an amplifier U4, a first resistor R16, a second resistor R12, a third resistor R20 and a fourth resistor R25;

[0051] The first end of the first resistor R16 is electrically connected to the output load, the second end of the first resistor R16 is electrically connected to the first end of the second resistor R12 and the in-phase input terminal of the amplifier U4, the second end of the second resistor R12 is grounded, the first end of the third resistor R20 is electrically connected to the output load, the second end of the third resistor R20 is electrically connected to the first end of the fourth resistor R25 and the inverting input terminal of the amplifier U4, and the second end of the fourth resistor R25 is electrically connected to the output terminal of the amplifier U4 and the main control module 1.

[0052] Specifically, in this embodiment, the first resistor R16 is a precision resistor, and the amplifier U4 is a precision operational amplifier. After the output load current is detected by the precision resistor, the load current is amplified by the precision operational amplifier and output to the main control module 1 for current detection. If the output current of the output load is lower than the preset value for a certain period of time, the state of the self-locking module 4 is released, and the system voltage output is turned off.

[0053] As a preferred embodiment, the current detection module 6 further includes a first capacitor C26 and a second capacitor C23;

[0054] The first end of the first capacitor C26 is electrically connected to the in-phase input terminal of the amplifier U4, the second end of the first capacitor C26 is electrically connected to the inverting input terminal of the amplifier U4, the first end of the second capacitor C23 is electrically connected to the power supply terminal of the amplifier U4, and the second end of the second capacitor C23 is grounded.

[0055] Specifically, in this embodiment, the first capacitor C26 and the second capacitor C23 are filter capacitors for ensuring input stability of the current signal and the voltage signal.

[0056] Please refer to Figure 4 , Figure 4 A circuit schematic diagram of a main control module and a voltage detection module provided in this application.

[0057] As a preferred embodiment, the battery voltage detection module 5 includes a fifth resistor R29 and a sixth resistor R33;

[0058] A first end of the fifth resistor R29 is electrically connected to the battery power supply module 2 , a second end of the fifth resistor R29 is electrically connected to the main control module 1 and a first end of the sixth resistor R33 , respectively, and a second end of the sixth resistor R33 is grounded.

[0059] Specifically, the fifth resistor R29 and the sixth resistor R33 are used as voltage-dividing resistors to implement low-voltage detection of the power supply battery voltage; if the power supply battery voltage is lower than a preset value, the state of the self-locking module 4 is released, and the enable output of the voltage conversion module 3 is turned off.

[0060] Please refer to Figure 5 , Figure 5 A circuit schematic diagram of a voltage stabilizing unit provided in this application.

[0061] As a preferred embodiment, the voltage conversion module 3 includes a DC conversion unit and a voltage stabilization unit;

[0062] The battery power supply module 2 is electrically connected to the DC conversion unit, and the DC conversion unit is electrically connected to the self-locking module 4, the voltage stabilizing unit and the current detection module respectively.

[0063] Specifically, in this embodiment, the voltage stabilizing unit is configured as a three-terminal voltage stabilizer, and the DC conversion unit is implemented by the existing technology, which is not specifically limited here.

[0064] Please refer to Figure 6 , Figure 6 A circuit schematic diagram of a touch button module and a self-locking module provided in this application.

[0065] As a preferred embodiment, the touch key module 7 includes a key S1 and a seventh resistor R27;

[0066] The first end of the button S1 is electrically connected to the battery power supply module 2 and the self-locking module 4 respectively, the second end of the button S1 is electrically connected to the first end of the seventh resistor R27 , and the second end of the seventh resistor R27 is electrically connected to the self-locking module 4 .

[0067] As a preferred embodiment, the self-locking module 4 includes a first MOS transistor Q6, a second MOS transistor Q5, a first transistor Q3, a second transistor Q2 and a first diode D3;

[0068] The base of the first transistor Q3 is electrically connected to the touch key module 7, the drain of the first MOS transistor Q6, the cathode of the first diode D3, the gate of the second MOS transistor Q5 and the collector of the second transistor Q2 respectively; the collector of the first transistor Q3 is electrically connected to the battery power supply module 2 and the base of the second transistor Q2 respectively; the emitter of the first transistor Q3 is electrically connected to the battery power supply module 2; the emitter of the first transistor Q3 is grounded; the drain of the second MOS transistor Q5 is electrically connected to the battery power supply module 2; the gate of the first MOS transistor Q6 is electrically connected to the main control module 1; the source of the first MOS transistor Q6, the source of the second MOS transistor Q5 and the anode of the first diode D3 are grounded.

[0069] Specifically, by pressing the button S1, the main control module 1 turns on the voltage conversion module 3, the voltage conversion module 3 realizes the voltage conversion output, and the self-locking module 4 latches this state; until the power supply battery voltage is too low or the output load current is lower than the preset value for a certain period of time, the latched state of the self-locking module 4 is released, the enable output of the voltage conversion module 3 is turned off, and the static power consumption of the system is low. In this embodiment, the first MOS tube Q6, the second MOS tube Q5, the first triode Q3, the second triode Q2 and the first diode D3 cooperate to realize the latching or releasing control of the system power supply state.

[0070] The present application also provides a battery device, including the static low-power sleep control circuit.

[0071] For an introduction to a static low-power sleep control circuit provided in the present application, please refer to the above-mentioned embodiment, and the present application will not go into details here.

[0072] It should be noted that, in this specification, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A static low-power sleep control circuit, characterized in that: It includes a main control module, a battery power supply module, a voltage conversion module, a self-locking module, a battery voltage detection module and a current detection module; The battery power supply module is electrically connected to the voltage conversion module, the battery voltage detection module and the self-locking module respectively; The voltage conversion module is electrically connected to the current detection module, the self-locking module and the main control module respectively, the main control module is electrically connected to the self-locking module, and the current detection module is electrically connected to the output load.

2. A static low-power sleep control circuit according to claim 1, characterized in that: The static low-power sleep control circuit also includes a touch key module; The touch button module is electrically connected to the main control module, the battery power supply module and the self-locking module respectively.

3. A static low-power sleep control circuit according to claim 1, characterized in that: The current detection module includes an amplifier, a first resistor, a second resistor, a third resistor and a fourth resistor; The first end of the first resistor is electrically connected to the output load, the second end of the first resistor is electrically connected to the first end of the second resistor and the in-phase input terminal of the amplifier, the second end of the second resistor is grounded, the first end of the third resistor is electrically connected to the output load, the second end of the third resistor is electrically connected to the first end of the fourth resistor and the inverting input terminal of the amplifier, and the second end of the fourth resistor is electrically connected to the output terminal of the amplifier and the main control module.

4. A static low-power sleep control circuit according to claim 3, characterized in that: The current detection module also includes a first capacitor and a second capacitor; The first end of the first capacitor is electrically connected to the non-inverting input terminal of the amplifier, the second end of the first capacitor is electrically connected to the inverting input terminal of the amplifier, the first end of the second capacitor is electrically connected to the power supply terminal of the amplifier, and the second end of the second capacitor is grounded.

5. The static low-power sleep control circuit according to claim 1, characterized in that: The battery voltage detection module includes a fifth resistor and a sixth resistor; The first end of the fifth resistor is electrically connected to the battery power supply module, the second end of the fifth resistor is electrically connected to the main control module and the first end of the sixth resistor respectively, and the second end of the sixth resistor is grounded.

6. A static low-power sleep control circuit according to claim 2, characterized in that: The voltage conversion module includes a DC conversion unit and a voltage stabilization unit; The battery power supply module is electrically connected to the DC conversion unit, and the DC conversion unit is electrically connected to the self-locking module, the voltage stabilizing unit and the current detection module respectively.

7. A static low-power sleep control circuit according to claim 6, characterized in that: The touch key module includes a key and a seventh resistor; The first end of the button is electrically connected to the battery power supply module and the self-locking module respectively, the second end of the button is electrically connected to the first end of the seventh resistor, and the second end of the seventh resistor is electrically connected to the self-locking module.

8. A static low-power sleep control circuit according to claim 2, characterized in that: The self-locking module includes a first MOS tube, a second MOS tube, a first triode, a second triode and a first diode; The base of the first transistor is electrically connected to the touch key module, the drain of the first MOS transistor, the cathode of the first diode, the gate of the second MOS transistor and the collector of the second transistor respectively; the collector of the first transistor is electrically connected to the battery power supply module and the base of the second transistor respectively; the emitter of the first transistor is electrically connected to the battery power supply module; the emitter of the first transistor is grounded; the drain of the second MOS transistor is electrically connected to the battery power supply module; the gate of the first MOS transistor is electrically connected to the main control module; the source of the first MOS transistor, the source of the second MOS transistor and the anode of the first diode are grounded.

9. A battery device, characterized in that: A static low-power sleep control circuit comprising any one of claims 1 to 8.

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