Combined detector and fire protection charging equipment

Abstract

The present application relates to the technical field of charging equipment, and discloses a composite detector and a fire protection charging equipment. Among them, the composite detector includes: a single-chip microcomputer body; a power module, connected to the single-chip microcomputer body; a temperature detection module, respectively connected to the single-chip microcomputer body and the power module; and a gas detection module, respectively connected to the single-chip microcomputer body and the power module. In the composite detector, a temperature detection module and a gas detection module are provided, and the single-chip microcomputer body, the temperature detection module and the gas detection module are powered by the power module. During the charging process of the fire protection charging equipment, the temperature change and gas change of the charging equipment are detected by the temperature detection module and the gas detection module, and the detected changes are sent to the single-chip microcomputer for fire warning judgment. By combining a variety of detection methods, a fire is warned according to temperature and gas changes, so as to improve the accuracy of the composite detector for fire warning.

Description

Technical Field

[0001] The present application relates to the technical field of charging equipment, for example, to a composite detector and fire protection charging equipment. Background Art

[0002] In the related art, fire detection products, mainly smoke alarms, are installed on electric bicycle charging facilities. Smoke alarms are devices that detect smoke based on its characteristics and have the functions of monitoring smoke and giving an alarm. They are used in the early stages of a fire and fire alarms are triggered when smoke particles are detected after a battery has thermal runaway.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] Fire detection, which mainly relies on smoke alarms, can only detect smoke particles after the battery has thermal runaway, and often produces false alarms due to the influence of the use environment, such as the influence of surrounding cooking smoke, the influence of temperature and humidity changes, the influence of sand and dust, etc., which seriously affect the accuracy of the charging system's early warning and alarm.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a composite detector and a fire protection charging device to improve the accuracy of fire detection by the composite detector.

[0008] In some embodiments, the composite detector includes: a single-chip microcomputer body; a power module connected to the single-chip microcomputer body; a temperature detection module connected to the single-chip microcomputer body and the power module respectively; and a gas detection module connected to the single-chip microcomputer body and the power module respectively.

[0009] Optionally, the power module includes: a two-bus circuit connected to an external power supply; a DC / DC circuit connected to the two-bus circuit; and a voltage stabilizing circuit connected to the DC / DC circuit.

[0010] Optionally, the voltage stabilizing circuit includes: a first voltage stabilizing circuit connected to the DC / DC circuit; a second voltage stabilizing circuit connected to the DC / DC circuit; and a third voltage stabilizing circuit connected to the second voltage stabilizing circuit.

[0011] Optionally, the temperature detection module includes: an ambient temperature sensor circuit, the power supply end of which is connected to the first voltage stabilizing circuit, and the output end of which is connected to the microcontroller body; a temperature and humidity sensor circuit, the power supply end of which is connected to the first voltage stabilizing circuit, and the output end of which is connected to the microcontroller body; and a thermopile temperature sensor circuit, which is respectively connected to the second voltage stabilizing circuit and the microcontroller body.

[0012] Optionally, the thermopile temperature sensor circuit includes: a thermopile temperature sensor, a power supply end of which is connected to the second voltage stabilizing circuit; and a first operational amplifier, an input end of which is connected to the output end of the thermopile temperature sensor, and an output end of which is connected to the microcontroller body.

[0013] Optionally, the gas detection module includes: a carbon monoxide sensor circuit, which is respectively connected to the second voltage stabilizing circuit and the single-chip microcomputer body; a VOC gas sensor circuit, which is respectively connected to the second voltage stabilizing circuit and the single-chip microcomputer body; and a smoke sensor circuit, whose power supply end is connected to the third voltage stabilizing circuit and whose output end is connected to the single-chip microcomputer body.

[0014] Optionally, the carbon monoxide sensor circuit includes: a second operational amplifier, whose power supply end is connected to the second voltage stabilizing circuit; a carbon monoxide sensor, whose power supply end is connected to the output end of the second operational amplifier; and a third operational amplifier, whose input end is connected to the output end of the carbon monoxide sensor and whose output end is connected to the microcontroller body.

[0015] Optionally, the VOC gas sensor circuit includes: a VOC gas sensor, a power supply end connected to the second voltage stabilizing circuit; a fourth operational amplifier, an input end connected to the output end of the VOC gas sensor, and an output end connected to the microcontroller body.

[0016] Optionally, the composite detector further includes: a lighting device, which is arranged on the surface of the composite detector; and a lighting power supply circuit, which is respectively connected to the power module and the lighting device.

[0017] In some embodiments, the fire protection charging equipment includes a charging cabinet, a battery swap cabinet or an integrated charging and swap cabinet, and the fire protection charging equipment includes: a fire protection charging equipment body; and a composite detector such as the above, which is arranged on the fire protection charging equipment body.

[0018] The composite detector and fire protection charging device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] In the composite detector, a temperature detection module and a gas detection module are provided, and the power module is used to power the single-chip computer body, the temperature detection module and the gas detection module. During the charging process of the fire protection charging device, the temperature detection module and the gas detection module are used to detect the temperature change and gas change of the charging device, and the detected changes are sent to the single-chip computer for fire warning judgment. By combining multiple detection methods, fires are warned according to temperature and gas changes, so as to improve the accuracy of fire warning of the composite detector.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a circuit block diagram of a composite detector provided by an embodiment of the present disclosure;

[0023] Figure 2 is a circuit block diagram of another composite detector provided by an embodiment of the present disclosure;

[0024] Figure 3 is a circuit diagram of a first voltage stabilizing circuit in a composite detector provided by an embodiment of the present disclosure;

[0025] Figure 4 is a circuit diagram of a second voltage stabilizing circuit in a composite detector provided by an embodiment of the present disclosure;

[0026] Figure 5 is a circuit diagram of a third voltage stabilizing circuit in a composite detector provided by an embodiment of the present disclosure;

[0027] Figure 6 is a circuit diagram of an ambient temperature sensor circuit in a composite detector provided by an embodiment of the present disclosure;

[0028] Figure 7 is a circuit diagram of a temperature and humidity sensor circuit in a composite detector provided by an embodiment of the present disclosure;

[0029] Figure 8 is a circuit diagram of a thermopile temperature sensor circuit in a composite detector provided by an embodiment of the present disclosure;

[0030] Fig. 9 is a circuit diagram of a carbon monoxide sensor circuit in a composite detector provided by an embodiment of the present disclosure;

[0031] Fig.10 is a circuit diagram of a VOC gas sensor circuit in a composite detector provided by an embodiment of the present disclosure;

[0032] Fig.11 is a circuit diagram of a lighting power supply circuit in a composite detector provided by an embodiment of the present disclosure;

[0033] Fig.12 It is a schematic diagram of a composite detector provided in an embodiment of the present disclosure.

[0034] Figure numerals: 1, composite detector, 10, single chip computer body, 20, power module, 30, temperature detection module, 40, gas detection module, 201, two bus circuit, 202, DC / DC circuit, 203, voltage stabilizing circuit, 213, first voltage stabilizing circuit, 223, second voltage stabilizing circuit, 233, third voltage stabilizing circuit, 301, ambient temperature sensor circuit, 302, temperature and humidity sensor circuit, 303, thermopile temperature sensor circuit, 401, carbon monoxide sensor circuit, 402, VOC gas sensor circuit, 403, smoke sensor circuit, R1, first resistor, R2, second resistor, R3, third resistor, R4, fourth resistor, R5, fifth resistor, U1, first diode, C 1. The first capacitor, C2, the second capacitor, C3, the third capacitor, VR1, the first voltage converter, R6, the sixth resistor, R7, the seventh resistor, R8, the eighth resistor, R9, the ninth resistor, Q1, the first transistor, U2, the second diode, C4, the fourth capacitor, C5, the fifth capacitor, VR2, the second voltage converter, C6, the sixth capacitor, C7, the seventh capacitor, J1, the ambient temperature sensor, R10, the tenth resistor, C8, the eighth capacitor, J2, the temperature and humidity sensor, C9, the ninth capacitor, R11, the eleventh resistor, R12, the twelfth resistor, J3, the thermopile temperature sensor, C10, the tenth capacitor, C11, the eleventh capacitor, C12, the twelfth capacitor, C13, the thirteenth capacitor, C14 , the fourteenth capacitor, C15, the fifteenth capacitor, C16, the sixteenth capacitor, R13, the thirteenth resistor, R14, the fourteenth resistor, R15, the fifteenth resistor, R16, the sixteenth resistor, R17, the seventeenth resistor, R18, the eighteenth resistor, R19, the nineteenth resistor, U3, the third diode, A1, the first operational amplifier, J4, the carbon monoxide sensor, C17, the seventeenth capacitor, C18, the eighteenth capacitor, C19, the nineteenth capacitor, C20, the twentieth capacitor, A2, the second operational amplifier, A3, the third operational amplifier, P1, the MOS tube, R20, the twentieth resistor, R21, the twenty-first resistor, R22, the twenty-second resistor, R23, the twenty-third resistor, R24, the twenty-fourth Resistor, R25, the 25th resistor, R26, the 26th resistor, NTC, thermistor, J5, VOC gas sensor, C21, the 21st capacitor, C22, the 22nd capacitor, C23, the 23rd capacitor, C24, the 24th capacitor, C25, the 25th capacitor, C26, the 26th capacitor, R27, the 27th resistor, R28, the 28th resistor, R29, the 29th resistor, R30, the 30th resistor, R31, the 31st resistor, R32, the 32nd resistor, R33, the 33rd resistor, A4, the fourth operational amplifier, P2, PMOS tube, R34, the 34th resistor, R35, the 35th resistor, R36, the 36th resistor, L, photodiode,Q2, the second transistor, Q3, the third transistor. , DETAILED DESCRIPTION

[0035] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0036] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Unless otherwise stated, the term "plurality" means two or more.

[0040] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0041] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0043] Combination Figure 1 As shown, the embodiment of the present disclosure provides a composite detector 1, including a single-chip computer body 10, a power module 20, a temperature detection module 30 and a gas detection module 40. The power module 20 is connected to the single-chip computer body 10. The temperature detection module 30 is connected to the single-chip computer body 10 and the power module 20 respectively. The gas detection module 40 is connected to the single-chip computer body 10 and the power module 20 respectively.

[0044] In the composite detector 1, a temperature detection module 30 and a gas detection module 40 are provided, and the power module 20 is used to power the single-chip computer body 10, the temperature detection module 30 and the gas detection module 40. During the charging process of the fire protection charging device, the temperature detection module 30 and the gas detection module 40 detect the temperature change and gas change of the charging device, and send the detected changes to the single-chip computer, which can realize real-time collection and calculation processing of the detected data based on the ARM (Advanced RISC Machine, Advanced Reduced Instruction Set Machine) processor to make fire warning judgments. By combining multiple detection methods, fires are warned according to temperature and gas changes, so as to improve the accuracy of fire warning of the composite detector 1.

[0045] Combination Figure 2 As shown, optionally, the power module 20 includes a two-bus circuit 201, a DC / DC circuit 202 and a voltage stabilizing circuit 203. The two-bus circuit 201 is connected to an external power supply. The DC / DC circuit 202 is connected to the two-bus circuit 201. The voltage stabilizing circuit 203 is connected to the DC / DC circuit 202.

[0046] In this implementation, the power supply module 20 is used to power each module in the composite detector 1. First, an external power supply is connected through the two-bus circuit 201, and a first voltage V1 is output after filtering and rectification. Then, the first voltage V1 output by the two-bus circuit 201 is converted into a stable second voltage V2 through the DC / DC circuit 202 to power the composite detector 1. Since the working power supplies of different modules in the composite detector 1 are different, it is necessary to design multiple voltage stabilizing circuits 203 in the circuit to provide different power supplies for power supply. In addition, the two buses also have a communication function. When the composite detector 1 detects a fire, the fire information can be reported to the control system of the fire protection charging equipment through the communication bus, and comprehensive judgment and system control can be performed.

[0047] Optionally, the value range of the first voltage V1 includes [22V, 26V]. More specifically, the first voltage V1 is 23V, 24V or 25V.

[0048] Optionally, the value range of the second voltage V2 includes [7V, 10V]. More specifically, the second voltage V2 is 7V, 8V or 10V.

[0049] Optionally, the voltage stabilizing circuit 203 includes a first voltage stabilizing circuit 213, a second voltage stabilizing circuit 223 and a third voltage stabilizing circuit 233. The first voltage stabilizing circuit 213 is connected to the DC / DC circuit 202. The second voltage stabilizing circuit 223 is connected to the DC / DC circuit 202. The third voltage stabilizing circuit 233 is connected to the second voltage stabilizing circuit 223.

[0050] In this embodiment, three different voltage stabilizing circuits are provided, and three different voltages are output according to the second voltage V2. Among them, the value range of the third voltage V3 output by the first voltage stabilizing circuit 213 includes [3V, 4V]. More specifically, the third voltage V3 is 3.3V, 3.5V or 3.7V. The value range of the fourth voltage V4 output by the second voltage stabilizing circuit 223 includes [4.5V, 5.5V]. More specifically, the fourth voltage V4 is 4.7V, 5V or 5.3V. The value range of the fifth voltage V5 output by the third voltage stabilizing circuit 233 includes [1.5V, 2V]. More specifically, the fifth voltage V5 is 1.5V, 1.8V or 2V.

[0051] Combination Figure 3As shown, in a specific embodiment, the first voltage stabilizing circuit 213 includes: a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first diode U1, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a first voltage converter VR1. Among them, the first end of the first resistor R1 is connected to the DC / DC circuit 202 to receive the second voltage V2. The second end of the first resistor R1 is respectively connected to the cathode of the first diode U1, the first end of the second resistor R2, the first end of the first capacitor C1, the first end of the second capacitor C2 and the input end of the first voltage converter VR1. The control end of the first diode U1 is respectively connected to the second end of the second resistor R2 and the first end of the third resistor R3. The output end of the first voltage converter VR1 is connected to the first end of the third capacitor C3 as the output end of the first voltage stabilizing circuit 213, and outputs the third voltage V3. The second end of the first diode U1, the second end of the third resistor R3, the second end of the first capacitor C1, the second end of the second capacitor C2, the ground end of the first voltage converter VR1, the second end of the third capacitor C3, the first end of the fourth resistor R4 and the first end of the fifth resistor R5 are all connected to the analog ground AGND. The second end of the fourth resistor R4 and the second end of the fifth resistor R5 are both grounded.

[0052] Combination Figure 4 As shown, in a specific embodiment, the second voltage stabilizing circuit 223 includes: a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first transistor Q1, a second diode U2, a fourth capacitor C4 and a fifth capacitor C5. Among them, the first end of the sixth resistor R6 and the collector of the first transistor Q1 are both connected to the DC / DC circuit 202 to receive the second voltage V2. The second end of the sixth resistor R6 and the base of the first transistor Q1 are both connected to the negative electrode of the second diode U2. The emitter of the first transistor Q1 is connected to the first end of the seventh resistor R7, the first end of the fourth capacitor C4, and the first end of the fifth capacitor C5 as the output end of the second voltage stabilizing circuit 223, outputting the fourth voltage V4. The second end of the seventh resistor R7 and the first end of the eighth resistor R8 are both connected to the control end of the second diode U2. The positive electrode of the second diode U2, the second end of the eighth resistor R8, the second end of the fourth capacitor C4, the second end of the fifth capacitor C5, and the first end of the ninth resistor R9 are all connected to the battery ground BGND. A second terminal of the ninth resistor R9 is grounded.

[0053] Combination Figure 5As shown, in a specific embodiment, the third voltage stabilizing circuit 233 includes: a second voltage converter VR2, a sixth capacitor C6, and a seventh capacitor C7. Among them, the input end of the second voltage converter VR2 and the first end of the sixth capacitor C6 are both connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The output end of the second voltage converter VR2 and the first end of the seventh capacitor C7 are connected as the output end of the third voltage stabilizing circuit 233 to output the fifth voltage V5. The ground end of the second voltage converter VR2, the second end of the sixth capacitor C6, and the second end of the seventh capacitor C7 are all grounded.

[0054] Optionally, the temperature detection module 30 includes: an ambient temperature sensor circuit 301, a temperature and humidity sensor circuit 302, and a thermopile temperature sensor circuit 303. The power supply end of the ambient temperature sensor circuit 301 is connected to the first voltage stabilizing circuit 213, and the output end is connected to the single-chip computer body 10. The power supply end of the temperature and humidity sensor circuit 302 is connected to the first voltage stabilizing circuit 213, and the output end is connected to the single-chip computer body 10. The thermopile temperature sensor circuit 303 is connected to the second voltage stabilizing circuit 223 and the single-chip computer body 10, respectively.

[0055] In this embodiment, three different temperature sensor circuits are arranged in the composite detector 1 to detect temperature changes in different areas. The ambient temperature sensor is used to detect the change of the current ambient temperature. Since the ambient temperature will rise when a fire occurs, the change of the ambient temperature can be used to give a preliminary warning of the fire. The temperature and humidity sensor is used to detect the temperature and humidity on the surface of each sensor, and according to the detected temperature and humidity, a temperature and humidity error compensation algorithm is used to compensate for the measurement error of the sensor, and the detection result of the sensor is compensated and adjusted. In order to improve the accuracy of the detection result of the temperature and humidity sensor, the arrangement position of the temperature and humidity sensor also needs to avoid the heating unit on the circuit board. The thermopile temperature sensor is used to detect the temperature of the surface of the battery and the charger. During the charging process, if the detected temperature is greater than the set value, an alarm signal is issued, and the charging power supply of all charging compartments is cut off in conjunction. The third voltage V3 output by the first voltage stabilizing circuit 213 is used to power the ambient temperature sensor and the temperature and humidity sensor, and the fourth voltage V4 output by the second voltage stabilizing circuit 223 is used to power the thermopile temperature sensor, which can improve the detection accuracy of each sensor. In addition, for the ambient temperature sensor and the temperature and humidity sensor, two first voltage stabilizing circuits 213 may be provided to provide power, thereby achieving the independence of the ambient temperature sensor and the temperature and humidity sensor.

[0056] Optionally, the thermopile temperature sensor circuit 303 includes: a thermopile temperature sensor, whose power supply end is connected to the second voltage stabilizing circuit 223 ; and a first operational amplifier A1 , whose input end is connected to the output end of the thermopile temperature sensor and whose output end is connected to the single chip computer body 10 .

[0057] The detection result of the thermopile temperature sensor needs to be amplified by the first operational amplifier A1, and after digital-to-analog conversion, the single-chip microcomputer implements digital operation and alarm judgment to further improve the detection accuracy of the thermopile temperature sensor.

[0058] Combination Figure 6 As shown, in a specific embodiment, the ambient temperature sensor circuit 301 includes an ambient temperature sensor J1, a tenth resistor R10, and an eighth capacitor C8. Among them, the first end of the tenth resistor R10 is connected to the first voltage stabilizing circuit 213 to receive the third voltage V3. The second end of the tenth resistor R10, the power supply end of the ambient temperature sensor J1 and the first end of the eighth capacitor C8 are connected as the temperature compensation end NTC-AD of the ambient temperature sensor J1, connected to the single-chip computer body 10, and used to receive the temperature compensation of the single-chip computer. The second end of the eighth capacitor C8 and the ground end of the temperature sensor are both connected to the analog ground AGND.

[0059] Combination Figure 7 As shown, in a specific embodiment, the temperature and humidity sensor circuit 302 includes a temperature and humidity sensor J2, a ninth capacitor C9, an eleventh resistor R11 and a twelfth resistor R12. Among them, the power supply end of the temperature and humidity sensor J2 and the first end of the ninth capacitor C9 are both connected to the first voltage stabilizing circuit 213 to receive the third voltage V3. The grounding end of the temperature and humidity sensor J2 and the second end of the ninth resistor R9 are both grounded. The first end of the eleventh resistor R11 is connected to the first voltage stabilizing circuit 213 to receive the third voltage V3. The second end of the eleventh resistor R11 and the output end of the temperature and humidity sensor J2 are connected as the temperature and humidity data output end SDA, connected to the single-chip body 10, for outputting temperature and humidity data. The clock end of the temperature and humidity sensor J2 and the first end of the twelfth resistor R12 are connected as the temperature and humidity clock end SCL, connected to the single-chip computer, for outputting the temperature and humidity clock signal. The second end of the twelfth resistor R12 is connected to the first voltage stabilizing circuit 213 to receive the third voltage V3.

[0060] Combination Figure 8As shown, in a specific embodiment, the thermopile temperature sensor circuit 303 includes a thermopile temperature sensor J3, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth capacitor C16, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a third diode U3 and a first operational amplifier A1. Among them, the first end of the tenth capacitor C10 and the first end of the thirteenth resistor R13 are both connected to the positive input terminal of the first operational amplifier A1. The second end of the tenth capacitor C10 is connected to the analog ground AGND. The second end of the thirteenth resistor R13 is connected to the first voltage output terminal of the thermopile temperature sensor J3. The first end of the fourteenth resistor R14 is connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The second end of the fourteenth resistor R14, the power supply end of the thermopile temperature sensor J3, and the first end of the eleventh capacitor C11 are connected as the thermopile power supply AD end NTC-ADC, which is connected to the single-chip computer for outputting the thermopile power supply AD value. The second end of the eleventh capacitor C11, the ground end of the thermopile temperature sensor J3, the second end of the twelfth capacitor C12, the second end of the thirteenth capacitor C13, and the positive electrode of the third diode U3 are all connected to the analog ground AGND. The second voltage output end of the thermopile temperature sensor J3, the first end of the twelfth capacitor C12, the first end of the thirteenth capacitor C13, the control end of the third diode U3, the negative electrode of the third diode U3, the second end of the fifteenth resistor R15, and the first end of the sixteenth resistor R16 are all connected to the reference voltage. The first end of the fifteenth resistor R15, the second end of the fourteenth capacitor C14, and the power supply end of the first operational amplifier A1 are all connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The first end of the fourteenth capacitor C14 is connected to the analog ground AGND. The second end of the sixteenth resistor R16, the first end of the fifteenth capacitor C15 and the first end of the seventeenth resistor R17 are all connected to the negative input terminal of the first operational amplifier A1. The output terminal of the first operational amplifier A1, the second end of the fifteenth capacitor C15 and the second end of the seventeenth resistor R17 are all connected to the first end of the eighteenth resistor R18. The second end of the eighteenth resistor R18, the first end of the nineteenth resistor R19 and the first end of the sixteenth resistor R16 are connected as the thermopile output terminal TEMP-ADC, connected to the single chip microcomputer, and output the thermopile AD value. The second end of the nineteenth resistor R19 and the second end of the sixteenth capacitor C16 are all connected to the analog ground AGND.

[0061] Optionally, the thermopile temperature sensor J3 includes a MEMS infrared thermopile temperature sensor. The MEMS infrared thermopile temperature sensor supports calibration of the temperature drift of the zero point and sensitivity of the sensor, and the digital calibration accuracy can reach within 1°C.

[0062] Optionally, the gas detection module 40 includes: a carbon monoxide sensor circuit 401, a VOC gas sensor circuit 402 and a smoke sensor circuit 403. The carbon monoxide sensor circuit 401 is connected to the second voltage stabilizing circuit 223 and the single-chip computer body 10 respectively. The VOC gas sensor circuit 402 is connected to the second voltage stabilizing circuit 223 and the single-chip computer body 10 respectively. The power supply end of the smoke sensor circuit 403 is connected to the third voltage stabilizing circuit 233, and the output end is connected to the single-chip computer body 10.

[0063] In this embodiment, the gas detection module 40 needs to detect a variety of different indicators in the air, including carbon monoxide concentration, set gas concentration, and smoke concentration, which are important indicators for judging the occurrence of fire. The carbon monoxide sensor and the VOC gas sensor are powered by the fourth voltage V4 output by the second voltage stabilizing circuit 223, and the smoke sensor is powered by the fifth voltage V5 output by the third voltage stabilizing circuit 233. The thermopile temperature sensor, the carbon monoxide sensor, and the VOC gas sensor can also be powered by three second voltage stabilizing circuits 223 to realize the independence of the thermopile temperature sensor, the carbon monoxide sensor, and the VOC gas sensor.

[0064] Optionally, the carbon monoxide sensor circuit 401 includes: a second operational amplifier, a carbon monoxide sensor, and a third operational amplifier. The power supply terminal of the second operational amplifier is connected to the second voltage stabilizing circuit 223. The power supply terminal of the carbon monoxide sensor is connected to the output terminal of the second operational amplifier. The input terminal of the third operational amplifier is connected to the output terminal of the carbon monoxide sensor, and the output terminal is connected to the single-chip computer body 10.

[0065] Combination Fig. 9As shown, in a specific embodiment, the carbon monoxide sensor circuit 401 includes: a carbon monoxide sensor J4, a seventeenth capacitor C17, an eighteenth capacitor C18, a nineteenth capacitor C19, a twentieth capacitor C20, a second operational amplifier A2, a third operational amplifier A3, a MOS tube P1, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, and a thermistor NTC. Among them, the first end of the seventeenth capacitor C17 is connected to the analog ground AGND. The second end of the seventeenth capacitor C17 and the power supply end of the second operational amplifier A2 are both connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The positive input end of the second operational amplifier A2 is connected to the reference voltage. The ground end of the second operational amplifier A2 is connected to the analog ground AGND. The output end of the second operational amplifier A2, the negative input end of the second operational amplifier A2, the first end of the MOS tube P1, and the second end of the twenty-first resistor R21 are all connected to the power supply end of the carbon monoxide sensor J4. The output end of the carbon monoxide sensor J4, the second end of the MOS tube P1, and the first end of the twenty-second resistor R22 are connected. The third end of the MOS tube P1 is connected to the first end of the twentieth resistor R20. The second end of the twentieth band resistor is connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The first end of the twenty-first resistor R21 and the first end of the eighteenth capacitor C18 are both connected to the positive input end of the third operational amplifier A3. The second end of the eighteenth capacitor C18 is connected to the analog ground AGND. The second end of the twenty-second resistor R22, the first end of the twenty-third resistor R23, and the first end of the nineteenth capacitor C19 are all connected to the negative input end of the third operational amplifier A3. The second end of the nineteenth resistor R19, the second end of the thermistor NTC, the second end of the twenty-fourth resistor R24, the output end of the third operational amplifier A3, and the first end of the twenty-fifth resistor R25 are connected. The second end of the 23rd resistor R23, the first end of the 24th resistor R24, and the first end of the thermistor NTC are connected. The second end of the 25th resistor R25, the first end of the 26th resistor R26, and the first end of the 20th capacitor C20 are connected as the carbon monoxide AD value output terminal CO-ADC, and are connected to the single-chip computer body 10. The second end of the 26th resistor R26 and the second end of the 20th capacitor C20 are both grounded.

[0066] In this embodiment, in order to reduce the influence of ground noise on the measurement accuracy of the carbon monoxide sensor J4, a second operational amplifier A2 is provided, and the reference voltage of the second operational amplifier A2 is an independent reference voltage source. The output signal of the carbon monoxide sensor J4 and the output information of the second operational amplifier A2 are input to the third operational amplifier A3 for amplification, and finally sampled and converted by the single chip microcomputer. The alarm setting value of the carbon monoxide sensor J4 is the volume fraction of carbon monoxide, and its range includes [100×10 -6 , 300×10 -6 ] and can be adjusted. When the composite detector 1 sends out an alarm signal, the charging power supply of all charging compartments is automatically cut off, effectively reducing the possibility of fire.

[0067] Optionally, the reference voltage is 1.24V.

[0068] Optionally, the VOC gas sensor circuit 402 includes a VOC gas sensor and a fourth operational amplifier. The power supply terminal of the VOC gas sensor is connected to the second voltage stabilizing circuit 223. The input terminal of the fourth operational amplifier is connected to the output terminal of the VOC gas sensor, and the output terminal is connected to the single chip computer body 10.

[0069] In this embodiment, the output signal of the VOC gas sensor needs to be amplified by a fourth operational amplifier to improve the detection accuracy of the VOC gas sensor.

[0070] Combination Fig.10As shown, in a specific embodiment, the VOC gas sensor circuit 402 includes: a VOC gas sensor J5, a 21st capacitor C21, a 22nd capacitor C22, a 23rd capacitor C23, a 24th capacitor C24, a 25th capacitor C25, a 26th capacitor C26, a 27th resistor R27, a 28th resistor R28, a 29th resistor R29, a 30th resistor R30, a 31st resistor R31, a 32nd resistor R32, a 33rd resistor R33, a fourth operational amplifier A4 and a PMOS tube P2. Among them, the first end of the 21st capacitor C21, the first end of the 22nd capacitor C22 and the power supply end of the VOC gas sensor J5 are all connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The second end of the 21st capacitor C21 and the second end of the 22nd capacitor C22 are both connected to the battery ground BGND. The first end of the 27th resistor R27 is used as the switch control end VOC-C of the VOC gas sensor J5, connected to the single-chip computer body 10, and is used to receive the control signal of the single-chip computer. The second end of the twenty-seventh resistor R27 and the first end of the twenty-eighth resistor R28 are both connected to the gate of the PMOS tube P2. The second end of the twenty-eighth resistor R28 and the drain of the PMOS tube P2 are both connected to the battery ground BGND. The source of the PMOS tube P2 is connected to the control end of the VOC gas sensor J5. The first end of the twenty-third capacitor C23 and the calibration end of the VOC gas sensor J5 are both connected to the second voltage stabilizing circuit 223 to receive the fourth voltage V4. The second end of the twenty-third capacitor C23 is connected to the analog ground AGND. The output end of the VOC gas sensor J5, the first end of the twenty-ninth resistor R29, and the first end of the twenty-fourth capacitor C24 are all connected to the positive input end of the fourth operational amplifier A4. The second end of the twenty-ninth resistor R29, the second end of the twenty-fourth capacitor C24, and the first end of the thirtieth resistor R30 are all connected to the analog ground AGND. The second end of the thirtieth resistor R30, the first end of the thirty-first resistor R31, and the first end of the twenty-fifth capacitor C25 are all connected to the negative input end of the fourth operational amplifier A4. The output end of the fourth operational amplifier A4, the second end of the 25th capacitor C25, the second end of the 31st resistor R31, and the first end of the 32nd resistor R32 are connected. The second end of the 32nd resistor R32, the first end of the 33rd resistor R33, and the first end of the 26th capacitor C26 are connected as the air quality AD value output end VOC-ADC, connected to the single-chip computer body 10, and used to output the air quality AD value. The second end of the 33rd resistor R33 and the second end of the 26th capacitor C26 are both connected to the analog ground AGND.

[0071] Optionally, the CO sensor J4 includes a battery-operated electrochemical sensor developed by Figaro that uses a special electrode instead of a water reservoir, reducing the overall dimensions and, therefore, the size of the composite sensor.

[0072] Optionally, the VOC gas sensor J5 includes a MEMS VOC gas sensor. The gas sensor uses a MEMS process to make a micro hot plate on a Si-based substrate, and the gas-sensitive material used is a metal oxide semiconductor material with low conductivity in clean air. When the detected gas exists in the environment of the gas sensor, the conductivity of the gas sensor changes with the concentration of the detected gas in the air. The higher the concentration of the detected gas, the higher the conductivity of the gas sensor. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the concentration of the detected gas.

[0073] Optionally, the smoke sensor includes a smoke detector. The smoke detector uses an optical dual-wavelength radiation light source. In the dark grid maze, the optical source sends light waves of specific wavelengths to diffuse into the air in the maze. When the surface of the particles or smoke in the dark grid maze is irradiated by the light waves, reflected light waves are generated to the surface of the photosensitive unit of the sensor. The more light the reflected light source on the surface of the photosensitive unit receives, the greater the output signal ratio. When it is detected that the smoke concentration during the charging process is greater than the set alarm threshold, an alarm signal is issued, and the charging power of all charging compartments is cut off in conjunction.

[0074] Optionally, the composite detector 1 further includes a lighting device, which is arranged on the surface of the composite detector 1; and a lighting power supply circuit, which is respectively connected to the power module 20 and the lighting device.

[0075] Combination Fig.11 As shown, in a specific embodiment, the lighting power supply circuit includes: a thirty-fourth resistor R34, a thirty-fifth resistor R35, a thirty-sixth resistor R36, a photosensitive diode L, a second triode Q2, and a third triode Q3. Among them, the first end of the thirty-fourth resistor R34 is connected to the DC / DC circuit 202 for receiving the second voltage V2. The second end of the thirty-fourth resistor R34 is connected to the positive electrode of the photosensitive diode L. The negative electrode of the photosensitive diode L is connected to the collector of the second triode Q2. The base of the second triode Q2, the second end of the thirty-fifth resistor R35, and the collector of the third triode Q3 are connected. The emitter of the second triode Q2, the base of the third triode Q3, and the first end of the thirty-sixth resistor R36 are connected. The emitter of the third triode Q3 and the second end of the thirty-sixth resistor R36 are both grounded. The first end of the thirty-fifth resistor R35 is connected to the LED lamp to provide power for the LED lamp.

[0076] In this embodiment, for night environments, a controllable lighting lamp is integrated inside the composite detector 1, which can be connected to the lighting power supply circuit to provide lighting when charging at night. In different embodiments, one or more controllable LED lamps can be provided, and a corresponding lighting power supply circuit is provided for each LED lamp.

[0077] Optionally, the single-chip computer body 10 is provided with a CAN bus communication interface for connecting to the communication protocol of the battery replacement facility.

[0078] Optionally, combined Fig.12 As shown, the shell material of the composite detector 1 is aluminum alloy.

[0079] Optionally, the size of the composite detector 1 is 68 mm×89 mm×25 mm.

[0080] The composite detector 1 provided in the embodiment of the present disclosure integrates a variety of fire detection technologies such as an ambient temperature sensor J1, a temperature and humidity sensor J2, a thermopile temperature sensor J3, a carbon monoxide sensor J4, a VOC gas sensor J5 and a smoke sensor, and can perform three-dimensional fire monitoring of the entire charging process. The composite detector 1 provided in the embodiment of the present disclosure can be applied to charging and swapping facilities, and can also be adapted to other occasions with battery fire hazards. It mainly includes early fire warning before battery thermal runaway and mid-term fire alarm during thermal runaway. Disconnecting the power supply of the battery pack in time before the battery pack temperature and released gas reach a certain level can terminate the battery thermal runaway process and effectively reduce fires. In addition, connecting the composite detector 1 to the fire extinguishing system can also realize automatic fire extinguishing control after the fire alarm, thereby achieving the purpose of effectively controlling the fire.

[0081] The disclosed embodiment also provides a fire protection charging device, which includes a charging cabinet, a battery replacement cabinet or an integrated charging and replacement cabinet, and also includes: a fire protection charging device body; and a composite detector 1 such as the above, which is arranged on the fire protection charging device body.

[0082] In the fire protection charging device, one or more charging compartments may be provided, and in each charging compartment, a composite detector 1 is provided to enhance the fire protection of the fire protection charging device.

[0083] Optionally, the fire protection charging device further comprises a control system of the fire protection charging device, which is arranged on the body of the fire protection charging device. The control system comprises: a control panel, which is arranged on the body of the fire protection charging device and connected to the composite detector of the fire protection charging device; an alarm main control platform, which is arranged on the body of the fire protection charging device and electrically connected to the control panel; the alarm main control platform prompts the alarm information after receiving the alarm signal sent by the control panel.

[0084] In the event of a fire hazard or fire in the fire protection charging equipment, the composite detector can detect environmental changes in the charging equipment and send the detected results to the control panel for fire determination. If it is determined that there is a fire hazard, the control panel will send an alarm signal to the alarm main control platform to prompt other devices with fire alarm information. After receiving the fire alarm information, other devices will perform corresponding prevention or fire extinguishing measures to realize the fire protection function of the charging equipment.

[0085] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A composite detector, characterized in that: include: MCU body; A power module is connected to the microcontroller body; The temperature detection module is connected to the single chip computer body and the power module respectively; and, The gas detection module is connected to the single chip computer body and the power supply module respectively.

2. The composite detector according to claim 1, characterized in that: The power module includes: A second bus circuit connected to an external power supply; A DC / DC circuit connected to the second bus circuit; A voltage stabilizing circuit is connected to the DC / DC circuit.

3. The composite detector according to claim 2, characterized in that: The voltage stabilization circuit includes: A first voltage stabilizing circuit connected to the DC / DC circuit; A second voltage stabilizing circuit connected to the DC / DC circuit; The third voltage stabilizing circuit is connected to the second voltage stabilizing circuit.

4. The composite detector according to claim 3, characterized in that: The temperature detection module includes: The ambient temperature sensor circuit has a power supply end connected to the first voltage stabilizing circuit and an output end connected to the single chip computer body; The temperature and humidity sensor circuit has a power supply end connected to the first voltage stabilizing circuit and an output end connected to the single-chip computer body; The thermopile temperature sensor circuit is connected to the second voltage stabilizing circuit and the single chip computer body respectively.

5. The composite detector according to claim 4, characterized in that: The thermopile temperature sensor circuit includes: The thermopile temperature sensor, the power supply end is connected to the second voltage stabilizing circuit; The first operational amplifier has an input end connected to the output end of the thermopile temperature sensor, and an output end connected to the single-chip computer body.

6. The composite detector according to claim 3, characterized in that: The gas detection module includes: The carbon monoxide sensor circuit is connected to the second voltage stabilizing circuit and the single chip computer body respectively; The VOC gas sensor circuit is connected to the second voltage stabilizing circuit and the single chip computer body respectively; The smoke sensor circuit has a power supply end connected to the third voltage stabilizing circuit, and an output end connected to the single chip computer body.

7. The composite detector according to claim 6, characterized in that: The carbon monoxide sensor circuit includes: A second operational amplifier, the power supply end of which is connected to a second voltage stabilizing circuit; A carbon monoxide sensor, a power supply terminal connected to an output terminal of a second operational amplifier; The third operational amplifier has an input end connected to the output end of the carbon monoxide sensor, and an output end connected to the single-chip computer body.

8. The composite detector according to claim 6, characterized in that: The VOC gas sensor circuit includes: The VOC gas sensor, the power supply end is connected to the second voltage stabilizing circuit; The fourth operational amplifier has an input end connected to the output end of the VOC gas sensor, and an output end connected to the single-chip computer body.

9. The composite detector according to any one of claims 1 to 8, characterized in that: Also includes: A lighting device is arranged on the surface of the composite detector; The lighting power supply circuit is connected to the power module and the lighting equipment respectively.

10. A fire protection charging device, characterized in that: Fire protection charging equipment includes charging cabinets, battery swap cabinets or integrated charging and battery swap cabinets. Fire protection charging equipment includes: Fire protection charging equipment body; The composite detector as claimed in any one of claims 1 to 9 is arranged on the body of the fire protection charging equipment.

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