Dry battery output circuit and device

Abstract

The utility model discloses a dry battery output circuit and equipment, and relates to the technical field of power electronic circuits, the dry battery output circuit comprises an acquisition module, a control module and an output module; the output module is respectively connected with the dry battery, the control module and the load; and the acquisition module is also connected with a dry battery and the control module. The acquisition module is used for acquiring the voltage of the dry battery, converting the output voltage into a first detection signal and transmitting the first detection signal to the control module. The control module is used for generating a power-off signal and transmitting the power-off signal to the output module when the first detection signal is not in a first preset range no matter whether the voltage is reduced due to too low electric quantity or the voltage is increased abnormally due to abnormal conditions. And after receiving the power-off signal, the output module can quickly cut off voltage output to the load, so that the dry battery is effectively prevented from being damaged by over-discharge or abnormal voltage of the battery.

Description

Technical Field

[0001] This application relates to the field of power electronic circuit technology, and more particularly to dry cell battery output circuits and devices. Background Technology

[0002] Currently available dry-cell battery products, such as remote controls, generally lack automatic power-off functionality. This means that once a dry-cell battery is placed inside a device, even if the device is in standby mode, the standby current will gradually deplete the battery's charge. When the battery is completely depleted, a corrosive liquid will form inside. Over time, this corrosive liquid will gradually seep out of the battery casing, potentially corroding the battery terminals and even the circuit board inside the appliance, ultimately leading to malfunction and affecting the product's normal use and lifespan.

[0003] To address this issue, current dry cell battery products typically employ positive temperature coefficient (PTC) resistors for short-circuit protection. However, the operating characteristics of PTC resistors mean that the required protection current increases with rising temperature. Therefore, existing dry cell battery short-circuit protection solutions generally only effectively cover a temperature range of -5°C to 85°C, offering limited protection under extreme temperature conditions.

[0004] Unfortunately, there is currently no dedicated chip solution for dry cell batteries on the market, which to some extent limits the safety and reliability of dry cell batteries during use. Utility Model Content

[0005] The main objective of this application is to provide a dry cell battery output circuit that addresses the technical problem that existing dry cell battery output circuits cannot provide comprehensive protection for dry cell batteries.

[0006] To achieve the above objectives, this application proposes a dry cell battery output circuit, which includes: a data acquisition module, a control module, and an output module; the output module is connected to the dry cell battery, the control module, and a load; the data acquisition module is also connected to the dry cell battery and the control module.

[0007] The acquisition module is used to acquire the dry cell battery voltage and convert the output voltage into a first detection signal, which is then transmitted to the control module. The control module generates a power-off signal and transmits it to the output module when the first detection signal is outside a first preset range. The output module stops outputting the dry cell battery voltage to the load upon receiving the power-off signal. By integrating the acquisition module, control module, and output module, real-time monitoring and intelligent management of the dry cell battery voltage are achieved. Specifically, the acquisition module accurately acquires the dry cell battery voltage value and converts it into a first detection signal, which is then sent to the control module. The control module determines the voltage state of the dry cell battery based on a preset first range (i.e., a safe voltage range). When the dry cell battery voltage deviates from this safe range, whether due to a voltage drop caused by low charge or an abnormal voltage rise caused by an abnormal condition, the control module immediately generates a power-off signal and transmits it to the output module. Upon receiving the power-off signal, the output module quickly cuts off the voltage output to the load, effectively preventing damage to the dry cell battery or equipment caused by over-discharge or abnormal voltage.

[0008] In addition, to achieve the above objectives, this application also proposes a dry cell battery output device, which includes the dry cell battery output circuit as described above. Attached Figure Description

[0009] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a structural block diagram of the dry cell battery output circuit of this application, as shown in Embodiment 1.

[0012] Figure 2 This is a circuit diagram of the output module provided in Embodiment 1 of the dry cell battery output circuit of this application;

[0013] Figure 3 This is a circuit diagram of the acquisition module provided in Embodiment 1 of the dry cell battery output circuit of this application;

[0014] Figure 4 This is a structural block diagram of Embodiment 2 of the dry cell battery output circuit of this application;

[0015] Figure 5The circuit diagram shows the overvoltage detection module, delay module, and filter module of the dry cell output circuit provided in Embodiment 2 of this application.

[0016] Explanation of icon numbers:

[0017] label illustrate label illustrate 10 Data Acquisition Module R1 to R7 Resistors 1 to 7 20 Control module C1 to C4 First to fourth capacitors 30 Output module Q1 / Q2 First and second MOSFETs 40 Delay module Q3 First transistor 50 Overvoltage detection module RL load resistor 60 Filtering module

[0018] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0020] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0021] When a dry cell battery's charge decreases, it can be considered equivalent to an ideal voltage source connected in series with an equivalent internal resistance. This means that the voltage provided by the battery is also affected by its internal resistance. According to Ohm's law, when current I flows through resistor R, the relationship between voltage U and current I is I = U / R. Therefore, in the equivalent circuit of a dry cell battery, the total resistance is the series connection of the internal resistance Rdc and the load resistance RL, i.e., the total resistance Rtotal = Rdc + RL.

[0022] When the battery charge decreases, its internal resistance Rdc increases. Since the total resistance Rtotal increases (because Rdc increases), and the voltage Vbat supplied by the battery remains constant, the current I will decrease according to Ohm's law. Simultaneously, in a series circuit, voltage is divided proportionally to the resistances. Therefore, when the internal resistance Rdc increases, the voltage it receives will also increase. This means that the voltage across the load resistor RL will decrease, i.e., VL = Vbat - IRdc (where I = Vba / Rtotal) will decrease.

[0023] Furthermore, dry-cell battery products, such as remote controls, generally lack automatic power-off functionality. This means that once a dry-cell battery is placed inside a device, even in standby mode, the standby current will gradually deplete the battery's charge. This is why many remote controls fail to function even when the display shows power. When the battery charge decreases, although the battery still has enough voltage to power the display (because the display may require a small current, there is still sufficient voltage after voltage division), when remote control requires a larger current, the increased internal resistance voltage leads to a decrease in the load voltage, potentially preventing the remote control's transmitter from operating. Therefore, releasing the button reduces the current and the internal resistance voltage, allowing the display to regain sufficient voltage to show the charge level. In summary, the increased internal resistance when a dry-cell battery's charge decreases is the primary reason why remote controls fail to function. Moreover, when the battery is completely depleted, a corrosive liquid can form inside, posing a significant safety hazard.

[0024] Based on this, the embodiments of this application provide a dry cell battery output circuit, referring to... Figure 1 , Figure 1 This is a structural block diagram of the dry cell battery output circuit of this application.

[0025] In this embodiment, the dry cell battery output circuit includes: a data acquisition module 10, a control module 20, and an output module 30; the output module 30 is connected to the dry cell battery, the control module 20, and the load, respectively; the data acquisition module 10 is also connected to the dry cell battery and the control module 20.

[0026] It should be noted that the acquisition module 10 is used to acquire the voltage of the dry cell battery and convert the output voltage into a first detection signal, which is then transmitted to the control module 20.

[0027] As is understandable, dry cell battery voltage refers to the DC voltage provided by the dry cell battery under normal operating conditions. A dry cell battery is a common chemical battery that converts chemical energy into electrical energy through a chemical reaction. Different types of dry cell batteries may provide different voltages, but the most common are 1.5-volt alkaline dry cell batteries, which are widely used in remote controls, flashlights, toys, and small electronic devices.

[0028] Understandably, the voltage of a dry cell battery is not constant; it gradually decreases with use and aging. When a dry cell battery is first used, its voltage is typically close to its nominal voltage (e.g., 1.5V). However, as the internal chemicals are depleted, the voltage it can provide gradually decreases. Furthermore, the battery's internal resistance increases with use, further affecting its output voltage and the current it can provide.

[0029] Therefore, collecting dry cell battery voltage data is a crucial step in monitoring battery status, estimating remaining charge, or ensuring proper device operation. This data can typically be collected using a multimeter, integrated circuits, or dedicated battery testing chips.

[0030] Understandably, the collected dry cell voltage is typically an analog signal. To communicate with the control module 20, this analog signal needs to be converted to a digital signal (if the control module is a digital system), or it needs to remain an analog signal but undergo appropriate conditioning (such as amplification, attenuation, or filtering) to meet the input requirements of the control module 20. This converted signal is called the first detection signal.

[0031] Understandably, the first detection signal is transmitted to the control module 20 through an appropriate interface such as an analog interface, a digital interface, or a serial communication interface. The control module 20 uses this signal to determine the state of the dry cell battery and makes corresponding control decisions accordingly.

[0032] It should be noted that the control module 20 is used to generate a power-off signal and transmit it to the output module 30 when the first detection signal is not within the first preset range.

[0033] Understandably, the first preset range is set based on the normal operating voltage of the dry cell battery. It is designed to ensure that the device can safely power off when the battery voltage drops below a certain critical value, thereby avoiding device damage or data loss due to battery depletion.

[0034] Understandably, when the first detection signal is not within the first preset range, it means that the voltage information obtained by the acquisition module 10 from the dry cell battery does not meet the preset safety or normal operating conditions in the control module 20. This situation usually indicates that the voltage of the dry cell battery has deviated from its normal operating range, possibly due to battery depletion, battery aging, internal battery malfunction, or other external factors.

[0035] Understandably, the power-off signal is a clear indication that the output module 30 needs to disconnect the dry cell battery from the load and stop supplying power to the load.

[0036] It should be noted that the output module 30 is used to stop outputting dry cell battery voltage to the load after receiving the power-off signal. The power-off signal is transmitted to the output module 30 through an appropriate interface or communication protocol. Upon receiving this signal, the output module 30 will perform corresponding operations to cut off the power supply, ensuring that the load and dry cell battery are protected.

[0037] Understandably, when the first detection signal is within a first preset range, the control module generates a power supply signal and transmits it to the output module. The output module, upon receiving the power supply signal, outputs the dry cell battery voltage to the load.

[0038] Specifically, this embodiment provides a specific implementation method for selecting the output module 30. Please refer to [link / reference]. Figure 2 , Figure 2 This is a circuit diagram of the output module provided in Embodiment 1 of the dry cell output circuit of this application.

[0039] In this embodiment, the output module 30 includes: a first resistor R1, a second resistor R2, a first capacitor C1, a first MOSFET Q1, and a second MOSFET Q2.

[0040] In this embodiment, the dry cell voltage is output by voltage division through a PTC resistor. The PTC resistor has a very low resistance at room temperature (e.g., 0.1Ω), and its resistance increases when heated to provide thermal protection, serving as a first line of defense for the dry cell. The first MOSFET Q1 is an enhancement-mode PMOS transistor, and the second MOSFET Q2 is an enhancement-mode NMOS transistor.

[0041] It should be noted that the source of the first MOSFET Q1 is connected to the dry cell battery and the first terminal of the first resistor R1, the gate of the first MOSFET Q1 is connected to the second terminal of the first resistor R1 and the first terminal of the second resistor R2, and the drain of the first MOSFET Q1 is connected to the load resistor RL.

[0042] It is understandable that the second resistor R2 is connected in series with the first resistor R1, forming a voltage divider circuit. This voltage divider circuit may be used to adjust the gate voltage to control the on and off states of the first MOSFET Q1. Simultaneously, the connection of the dry cell battery, the first MOSFET Q1, and the load resistor RL also constitutes a controllable circuit, allowing the dry cell battery to supply power to the load resistor RL through the operating state of the first MOSFET Q1.

[0043] It should be noted that the source of the second MOSFET Q2 is connected to the second terminal of the second resistor R2, the gate of the second MOSFET Q2 is connected to the output terminal of the control module and the first terminal of the first capacitor C1, and the drain of the second MOSFET Q2 is connected to the second terminal of the first capacitor C1; the second terminal of the first capacitor C1 is also grounded.

[0044] It is understandable that the source of the second MOSFET Q2 is connected to the second terminal of the second resistor R2. This means that the second resistor R2 is not only connected to the gate of the first MOSFET Q1 (through voltage division by R1), but also connected to the source of the second MOSFET Q2, forming a complex voltage divider and drive network.

[0045] The gate of the second MOSFET Q2 is connected to the output terminal of the control module and the first terminal of the first capacitor C1. This indicates that the control module controls the conduction and cutoff of the second MOSFET Q2 by outputting a signal, namely a power-off signal. The first capacitor C1 here serves as a filter or decoupling to reduce noise interference on the gate.

[0046] Specifically, this embodiment provides a specific implementation method for selecting the acquisition module 10. Please refer to [link / reference]. Figure 3 , Figure 3 The circuit diagram of the acquisition module provided in Embodiment 1 of the dry cell battery output circuit of this application.

[0047] In this embodiment, the acquisition module 10 includes a third resistor R3, a second capacitor C2, and a fourth resistor R4. The first end of the third resistor R3 is connected to a dry cell battery, and the second end of the third resistor R3 is connected to the first end of the second capacitor C2, the first end of the fourth resistor R4, and the first input terminal of the control module. The second end of the fourth resistor R4 is connected to the output terminal of the control module; the second end of the second capacitor is grounded.

[0048] Understandably, the second terminal of the third resistor R3 is connected to the first terminal of the second capacitor C2, the first terminal of the fourth resistor R4, and the first input terminal of the control module, forming a voltage divider circuit to reduce the voltage of the dry cell battery to a level suitable for the control module to process. The second capacitor C2, acting as a filter capacitor, is connected between the third resistor R3 and the fourth resistor R4, and between it and the input terminal of the control module, to smooth the voltage signal and reduce the impact of noise and fluctuations on the power supply line on the input signal of the control module.

[0049] It should be noted that the first input terminal of the control module is the detection pin. The initial battery voltage must meet the product of the threshold voltage and the voltage division ratio of the third resistor R3 and the fourth resistor R4. Therefore, by adjusting the resistance parameters of the third resistor R3 and the fourth resistor R4, the initial turn-on voltage can be arbitrarily adjusted. This avoids the phenomenon of short system operation time when using a low-charge battery, or the system displaying a charge level but actually having a low charge level, resulting in no function or even shutdown.

[0050] Therefore, when the dry cell battery meets the threshold voltage multiplied by the voltage division ratio of the third resistor R3 and the fourth resistor R4, the output terminal of the control module 20 presents a high impedance state, the voltage at the output terminal of the control module 20 is the same as the voltage of the dry cell battery, the second MOSFET Q2 is turned on, the second resistor R2 and the first resistor R1 are connected in series to divide the voltage, the first MOSFET Q1 is turned on, and the dry cell battery voltage is output to the load.

[0051] When the dry cell voltage gradually decreases or is undervoltage during initial assembly, the threshold voltage cannot be satisfied by multiplying the voltage division ratio of the third resistor R3 and the fourth resistor R4. The output of the control module 20 will output a 0 level, the second MOSFET Q2 will be turned off, and the first MOSFET Q1 will be turned off, thus realizing undervoltage assembly power-off protection and deep discharge protection.

[0052] In this embodiment, real-time monitoring and intelligent management of dry cell battery voltage are achieved by integrating a data acquisition module, a control module, and an output module. Specifically, the data acquisition module accurately acquires the voltage value of the dry cell battery and converts it into a first detection signal, which is then sent to the control module. The control module determines the voltage state of the dry cell battery based on a preset first range (i.e., a safe voltage range). When the dry cell battery voltage deviates from this safe range, whether due to a voltage drop caused by low charge or an abnormal voltage rise caused by an abnormal situation, the control module immediately generates a power-off signal and transmits it to the output module. Upon receiving the power-off signal, the output module quickly cuts off the voltage output to the load, thereby effectively preventing damage to the dry cell battery or equipment caused by over-discharge or abnormal voltage.

[0053] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 4 and Figure 5 , Figure 4 This is a structural block diagram of Embodiment 2 of the dry cell battery output circuit of this application. Figure 5 The circuit diagram shows the overvoltage detection module, delay module, and filter module of the dry cell output circuit provided in Embodiment 2 of this application.

[0054] In this embodiment, the dry cell output circuit further includes a delay module 40; the delay module 40 is connected to the control module 20.

[0055] It should be noted that the delay module 40 is used to generate a preset delay signal and transmit it to the control module 20; the control module 20 is also used to output the power-off signal or power-on signal with a delay based on the preset delay signal.

[0056] Understandably, the core function of delay module 40 is to generate a delayed signal with a specific duration. This signal can be an electrical pulse, voltage change, or other form of signal, depending on the implementation of delay module 40 and the requirements of control module 20. The generated delayed signal is transmitted to control module 20. Control module 20 may have a dedicated input or interface for receiving this signal. After receiving the delayed signal, control module 20 will output a power-off signal or power-on signal after a delay, according to preset logic or algorithm. This means that control module 20 will not immediately respond to an event (such as low battery or abnormal load), but will take action after a certain delay.

[0057] Specifically, this embodiment provides an implementation method in which the delay module 40 includes: a third capacitor C3; the first end of the third capacitor C3 is connected to the second input terminal of the control module 20, and the second end of the third capacitor C3 is grounded.

[0058] Understandably, the second input terminal of the control module 20 is used to receive delayed signals. When the second input terminal of the control module 20 receives a trigger signal (which may be high or low, depending on the design of the control module), this signal will begin charging the third capacitor C3. The time constant of the charging process depends on the capacitance value of the third capacitor C3 and the resistor connected to it.

[0059] Understandably, after the first MOSFET Q1 is normally turned on, if the load is short-circuited, the dry cell voltage will drop rapidly, inevitably causing the first detection signal to fall outside the first preset range. This will cause the output of the control module 20 to output a 0 level, and the second MOSFET Q2 will turn off. The turn-off of the second MOSFET Q2 will then cause the first MOSFET Q1 to turn off. Furthermore, due to the delay effect of the second input of the control module 20, the delay release time t2 can be set by adjusting the size of the third capacitor C3.

[0060] Understandably, after the first MOSFET Q1 is turned off, the dry cell voltage will rise rapidly. Although the first detection signal is within the first preset range, due to the delay of the third capacitor C3, the output of the control module will remain at a low level for a time t2. The RC delay time formed by the third resistor R3 and the second capacitor C2 is t1, meaning that the time for the first MOSFET Q1 to conduct when the system is short-circuited is t1, and the time for the first MOSFET Q1 to turn off is t2+t1. Therefore, by reasonably adjusting the values ​​of the third resistor R3, the second capacitor C2, and the third capacitor C3, the conduction and turn-off times of the first MOSFET Q1 can be controlled, ensuring that the power supply is quickly cut off when a short circuit occurs, and that the power supply can be restored in a timely manner after the fault is cleared. Combined with the fact that the resistance of the PTC resistor increases when short-circuited, the possibility of continuous heating of the circuit leading to device burnout and melting of structural components is avoided, thus achieving short-circuit protection.

[0061] The dry cell output circuit further includes an overvoltage detection module 50; the overvoltage detection module 50 is connected to the dry cell and the control module 20 respectively.

[0062] The overvoltage detection module 50 is used to collect the dry cell voltage and convert the output voltage into a second detection signal; the overvoltage detection module 50 is also used to generate an overvoltage signal and transmit it to the control module 20 when the second detection signal is outside a second preset range; the control module 20 is also used to generate a power-off signal and transmit it to the output module 30 after receiving the overvoltage signal.

[0063] It is understandable that converting the output voltage into a second detection signal is to protect other components in the circuit and reduce the amplitude to achieve low-cost selection. When the second detection signal is outside the second preset range (i.e., when the dry cell voltage is too high), the overvoltage detection module 50 will generate an overvoltage signal. This signal is transmitted to the control module 20 to trigger the power-off protection mechanism.

[0064] Specifically, one implementation is given, wherein the overvoltage detection module 50 includes: a fifth resistor R5, a sixth resistor R6, and a first transistor Q3.

[0065] It should be noted that the first end of the fifth resistor R5 is connected to the dry cell battery, and the second end of the fifth resistor R5 is connected to the first end of the sixth resistor R6. The base of the first transistor Q3 is connected to the first end of the sixth resistor R6, the collector of the first transistor Q3 is connected to the first input terminal of the control module, and the emitter of the first transistor Q3 is grounded; the second end of the sixth resistor R6 is grounded.

[0066] Understandably, the second terminal of the fifth resistor R5 is connected to the first terminal of the sixth resistor R6, forming part of a voltage divider circuit. When the dry cell voltage rises to a preset overvoltage threshold, the voltage obtained after voltage division by the fifth resistor R5 and the sixth resistor R6 exceeds the conduction threshold of the first transistor Q3. At this time, the first transistor Q3 starts to conduct, its collector voltage drops, and it sends a low-level signal, i.e., an overvoltage signal, to the first input terminal of the control module 20. At this time, the first MOSFET Q1 is turned off, thereby realizing overvoltage protection.

[0067] In addition, the dry cell battery output circuit also includes: a filter module 60; the filter module 60 is connected to the dry cell battery and the control module 20; the filter module 60 is used to filter the dry cell battery voltage and supply power to the control module 20.

[0068] The filter module 60 includes a seventh resistor R7 and a fourth capacitor C4; the first end of the seventh resistor R7 is connected to a dry cell battery, and the second end of the seventh resistor R7 is connected to the power supply terminal of the control module and the first end of the fourth capacitor C4; the ground terminal of the control module 20 is grounded, and the second end of the fourth capacitor C4 is grounded.

[0069] Understandably, when the dry cell battery voltage fluctuates, the seventh resistor R7 and the fourth capacitor C4 together form a simple RC filter circuit. The seventh resistor R7 limits sudden current changes, preventing excessive instantaneous current from impacting the control module 20. The fourth capacitor C4 smooths voltage fluctuations by storing and releasing charge, providing a relatively stable power supply voltage for the control module 20.

[0070] Understandably, the filtered dry cell voltage is supplied to the power supply terminal of the control module 20 through the seventh resistor R7, ensuring that the control module can work normally.

[0071] Understandably, the time constants of resistor R7 and capacitor C4 can be set to be less than the time constants of resistor R3 and capacitor C2 to ensure that the first detection signal is outside the first preset range before the control module operates.

[0072] In this embodiment, short-circuit protection is achieved by introducing a delay module in combination with a PTC resistor, and overvoltage protection is achieved by expanding the monitoring scope through an overvoltage detection module. Combined with Embodiment 1, comprehensive protection of the dry cell battery is achieved, extending the battery's lifespan.

[0073] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the dry cell output circuit of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0074] This application also provides a dry cell battery output device, which includes the dry cell battery output circuit as described in the above embodiments.

[0075] The dry cell battery output device provided in this application, employing the dry cell battery output circuit in the above embodiments, can solve the technical problem that existing dry cell battery output circuits cannot achieve comprehensive protection for dry cell batteries. Compared with the prior art, the beneficial effects of the dry cell battery output device provided in this application are the same as those of the dry cell battery output circuit provided in the above embodiments, and other technical features in the dry cell battery output device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0076] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A dry cell battery output circuit, characterized in that, The dry cell battery output circuit includes: a data acquisition module, a control module, and an output module; The output module is connected to the dry cell battery, the control module, and the load, respectively. The acquisition module is also connected to the dry cell battery and the control module; The acquisition module is used to acquire the voltage of the dry cell battery and convert the output voltage into a first detection signal, which is then transmitted to the control module. The control module is used to generate a power-off signal and transmit it to the output module when the first detection signal is not within the first preset range. The output module is used to stop outputting dry cell battery voltage to the load after receiving the power failure signal.

2. The dry cell battery output circuit as described in claim 1, characterized in that, The output module includes: a first resistor, a second resistor, a first capacitor, a first MOSFET, and a second MOSFET; The source of the first MOSFET is connected to the dry cell battery and the first terminal of the first resistor, the gate of the first MOSFET is connected to the second terminal of the first resistor and the first terminal of the second resistor, and the drain of the first MOSFET is connected to the load. The source of the second MOS transistor is connected to the second terminal of the second resistor, the gate of the second MOS transistor is connected to the output terminal of the control module and the first terminal of the first capacitor, and the drain of the second MOS transistor is connected to the second terminal of the first capacitor. The second terminal of the first capacitor is also grounded.

3. The dry cell battery output circuit as described in claim 1, characterized in that, The acquisition module includes a third resistor, a second capacitor, and a fourth resistor; The first end of the third resistor is connected to the dry cell battery, and the second end of the third resistor is connected to the first end of the second capacitor, the first end of the fourth resistor, and the first input end of the control module. The second end of the fourth resistor is connected to the output end of the control module; The second terminal of the second capacitor is grounded.

4. The dry cell battery output circuit as described in claim 1, characterized in that, The control module is also used to generate a power supply signal and transmit it to the output module when the first detection signal is within a first preset range; The output module is used to output the dry cell battery voltage to the load after receiving the power supply signal.

5. The dry cell battery output circuit as described in claim 4, characterized in that, The dry cell output circuit also includes: a delay module; The delay module is connected to the control module; The delay module is used to generate a preset delay signal and transmit it to the control module; The control module is also used to output the power-off signal or power-on signal with a delay based on the preset delay signal.

6. The dry cell battery output circuit as described in claim 5, characterized in that, The delay module includes: a third capacitor; The first terminal of the third capacitor is connected to the second input terminal of the control module, and the second terminal of the third capacitor is grounded.

7. The dry cell battery output circuit as described in claim 3, characterized in that, The dry cell output circuit also includes: an overvoltage detection module; The overvoltage detection module is connected to the dry cell battery and the control module, respectively. The overvoltage detection module is used to collect the dry cell battery voltage and convert the output voltage into a second detection signal; The overvoltage detection module is also used to generate an overvoltage signal and transmit it to the control module when the second detection signal is not within the second preset range; The control module is also used to generate a power-off signal and transmit it to the output module after receiving the overvoltage signal.

8. The dry cell battery output circuit as described in claim 7, characterized in that, The overvoltage detection module includes: a fifth resistor, a sixth resistor, and a first transistor; The first end of the fifth resistor is connected to the dry cell battery, and the second end of the fifth resistor is connected to the first end of the sixth resistor; The base of the first transistor is connected to the first terminal of the sixth resistor, the collector of the first transistor is connected to the control module, and the emitter of the first transistor is grounded. The second terminal of the sixth resistor is grounded.

9. The dry cell battery output circuit as described in claim 1, characterized in that, The dry cell output circuit also includes: a filtering module; The filtering module is connected to the dry cell battery and the control module; The filtering module is used to filter the dry cell battery voltage and supply power to the control module; The filtering module includes: a seventh resistor and a fourth capacitor; The first end of the seventh resistor is connected to a dry cell battery, and the second end of the seventh resistor is connected to the power supply terminal of the control module and the first end of the fourth capacitor. The grounding terminal of the control module is grounded, and the second terminal of the fourth capacitor is grounded.

10. A dry cell battery output device, characterized in that, The dry cell output device includes a dry cell output circuit as described in any one of claims 1 to 9.

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