Vehicle-mounted smoke sensor integrating hydrogen fluoride detection and electrolyte leakage prevention
By integrating smoke, temperature, and hydrogen fluoride detection circuits into the vehicle-mounted smoke sensor, the problems of false alarms from vehicle-mounted smoke sensors and detection of electrolyte leakage and hydrogen fluoride are solved, enabling rapid and accurate detection of hydrogen fluoride and improving the safety of new energy vehicle battery packs.
Patent Information
- Application Number
- CN202423180883.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing vehicle smoke sensors are susceptible to dust and temperature differences, leading to false alarms. Meanwhile, electrolyte leaks in new energy vehicle battery packs may produce hydrogen fluoride gas that cannot be effectively detected.
An on-board smoke sensor integrating hydrogen fluoride detection was designed, which includes smoke, temperature and hydrogen fluoride detection circuits. It uses a thermistor and operational amplifier for real-time data acquisition and compensation, and combines a hydrogen fluoride alarm strategy, and is integrated into the battery pack of a new energy vehicle.
It enables rapid detection of hydrogen fluoride, reduces false alarms, and improves the safety and reliability of hydrogen fluoride leakage in new energy vehicle battery packs.
Smart Images
Figure CN223856985U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydrogen fluoride detection technical field, concretely is a kind of integrated hydrogen fluoride detection vehicle-mounted smoke sensor of preventing electrolyte leakage. BACKGROUND
[0002] When smoke detection optical maze meets smoke or other particles, photodiode current changes, an analog value is generated, so that it is detected, and the principle that combustible particle concentration influences photodiode current change sends the analog signal corresponding to smoke concentration to host computer.
[0003] Automobile is not absolutely isolated from the outside world, and the automobile drives in complex road environment, and when dust-containing air flows through the smoke sensor and stays in smoke maze, the light signal received by receiving tube exceeds threshold value. Simplely, whether light signal is shielded or scattered is compared to determine the occurrence of smoke, and dust, dust and the like can also trigger alarm;At the same time, when new energy automobile drives at high speed or automobile fast charges, the heat of battery pack can be more serious, when the air flowing through the smoke sensor and the surrounding temperature difference is large, the water vapor generated is enough to trigger alarm. And at present, whether it is lithium iron phosphate or ternary lithium battery, there is a certain fluoride in electrolyte, and hydrogen fluoride gas is generated when thermal runaway and electrolyte leakage occur.
[0004] In view of this, we propose a kind of integrated hydrogen fluoride detection vehicle-mounted smoke sensor of preventing electrolyte leakage. INVENTION CONTENTS
[0005] In view of the deficiencies of the prior art, the utility model provides a kind of integrated hydrogen fluoride detection vehicle-mounted smoke sensor of preventing electrolyte leakage, to solve the problems mentioned in the above background art.
[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of integrated hydrogen fluoride detection vehicle-mounted smoke sensor of preventing electrolyte leakage, including sensor base and with the detachable installation of sensor shell of sensor base, the sensor base is provided with sensor circuit, and the sensor circuit includes: the smoke detection circuit for carrying out data detection to smoke;Temperature detection circuit for detecting temperature;Hydrogen fluoride detection circuit for detecting hydrogen fluoride.
[0007] Optionally, the smoke detection circuit includes IR_LED end infrared emitter tube and photodiode PD1, the IR_LED end is connected with +3.3V, the other end of the resistor R19 is grounded, the resistor R19 is electrically connected with the base end of triode Q1, the emitter of the triode Q1 is grounded through resistor R3, and the collector of the triode Q1 is electrically connected with TP13 end.
[0008] Optionally, the temperature detection circuit comprises a thermistor RT1, the 2 end of the thermistor RT1 is grounded, the 1 end is electrically connected with the TEMP_ADC IN_PG4_P38 end, the thermistor RT1 is electrically connected with one end of a resistor R26, the other end of the resistor R26 is electrically connected with a +3.3V end, the +3.3V end is respectively electrically connected with one end of a capacitor C24 and one end of a capacitor C26, the other end of the capacitor C24 and the other end of the capacitor C26 are respectively grounded.
[0009] Optionally, the hydrogen fluoride detection circuit comprises an operational amplifier U205-A, the 4 end of the operational amplifier U205-A is electrically connected with a VCC end, the 8 end is grounded, the 1 end is electrically connected with the 2 end of a connecting seat J3, the 3 end is electrically connected with the sliding end of a slide rheostat RP30, the 2 end is electrically connected with one end of a slide rheostat resistance, the other end of the slide rheostat resistance is grounded.
[0010] Optionally, the sensor base is detachably provided with a double-wavelength emitting tube and an optical mounting rack, and the sensor base is further detachably provided with an interface.
[0011] Optionally, the optical mounting rack is detachably provided with a first receiving tube and a second receiving tube.
[0012] The utility model provides a kind of integrated hydrogen fluoride detection prevents electrolyte leakage's vehicle-mounted smoke sensor.
[0013] With the following beneficial effects:
[0014] 1, the integrated hydrogen fluoride detection prevents electrolyte leakage's vehicle-mounted smoke sensor, integrates thermistor RT1, real-time acquisition is carried out to temperature data, is used for the compensation of smoke detection and the mapping of hydrogen fluoride data.Integrated hydrogen fluoride detection circuit realizes real-time acquisition to hydrogen fluoride concentration.
[0015] 2, the integrated hydrogen fluoride detection prevents electrolyte leakage's vehicle-mounted smoke sensor, is integrated in new energy automobile battery pack, in combination with the alarm strategy of hydrogen fluoride needs to be rigorous and with working environment match, play rapid detection function. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the structure schematic diagram of the whole device of the utility model;
[0017] Figure 2 It is the structure schematic diagram of the sensor base of the utility model;
[0018] Figure 3 It is the schematic diagram of smoke detection circuit of the utility model;
[0019] Figure 4 It is the temperature detection circuit schematic view of the utility model;
[0020] Figure 5 It is the hydrogen fluoride detection circuit schematic view of the utility model.
[0021] In the figure: 1, sensor shell; 2, sensor base; 3, interface; 4, dual-wavelength emitting tube; 5, first receiving tube; 6, optical mounting rack; 7, second receiving tube. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0023] Please refer to Figures 1-5 The utility model provides a kind of technical solutions: a kind of integrated hydrogen fluoride detection prevents electrolyte leakage's vehicle-mounted smoke sensor, including sensor base 2 and with the detachable installation of sensor shell 1 of sensor base 2, sensor base 2 is provided with sensor circuit, and sensor circuit includes: the smoke detection circuit that carries out data detection to smoke;Temperature detection circuit for detecting temperature;Hydrogen fluoride detection circuit for detecting hydrogen fluoride.Sensor base 2 is detachably installed with dual-wavelength emitting tube 4 and optical mounting rack 6, and sensor base 2 is also detachably installed with interface 3, for data line connection.Optical mounting rack 6 is detachably installed with first receiving tube 5 and second receiving tube 7, and first receiving tube 5 and second receiving tube 7 form optical path.
[0024] The smoke detection circuit includes IR_LED end infrared emitting tube and photodiode PD1, IR_LED end is connected with +3.3V, the other end of resistor R19 is grounded, and resistor R19 is electrically connected with the base end of triode Q1, the emitter of triode Q1 is grounded through resistor R3, and the collector of triode Q1 is electrically connected with TP13 end.
[0025] The temperature detection circuit includes thermistor RT1, and the 2 end of thermistor RT1 is grounded, and the 1 end is electrically connected with TEMP_ADC IN_PG4_P38 end, and thermistor RT1 is electrically connected with one end of resistor R26, and the other end of resistor R26 is electrically connected with +3.3V end, and +3.3V end is electrically connected with one end of capacitor C24 and capacitor C26 respectively, and the other end of capacitor C24 and capacitor C26 is grounded respectively.
[0026] The hydrogen fluoride detection circuit comprises an operational amplifier U205-A, the 4 end of the operational amplifier U205-A is electrically connected with the VCC end, the 8 end of the operational amplifier U205-A is grounded, the 1 end of the operational amplifier U205-A is electrically connected with the 2 end of the connecting seat J3, the 3 end of the operational amplifier U205-A is electrically connected with the sliding end of the slide rheostat RP30, the 2 end of the operational amplifier U205-A is electrically connected with one end of the slide rheostat resistance, and the other end of the slide rheostat resistance is grounded.
[0027] As an application of the embodiment:
[0028] The integrated thermal resistor RT1 collects temperature data in real time, is used for compensation of smoke detection and mapping of hydrogen fluoride data, and the detection circuit is as shown in Figure 4 The integrated hydrogen fluoride detection circuit collects hydrogen fluoride concentration in real time.
[0029] Since the product is integrated in the new energy automobile battery pack, the alarm strategy of hydrogen fluoride needs to be rigorous and matched with the working environment. Since the environment in the battery pack is relatively closed and stable, under the normal working state, the hydrogen fluoride and smoke concentration should be relatively stable and change slowly, if a thermal runaway event occurs, then the smoke and hydrogen fluoride concentration in the pack will rise at a faster speed.
[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An on-vehicle smoke sensor integrated with hydrogen fluoride detection and electrolyte leakage prevention, characterized by: The sensor base (2) is provided with a sensor circuit, which includes a smoke detection circuit for detecting data of smoke, a temperature detection circuit for detecting temperature, and a hydrogen fluoride detection circuit for detecting hydrogen fluoride.
2. The vehicle-mounted smoke sensor for detecting hydrogen fluoride and preventing electrolyte leakage according to claim 1, characterized in that: The smoke detection circuit includes an IR_LED end infrared emission tube and a photodiode PD1, the IR_LED end is connected with +3.3V, the other end of a resistor R19 is grounded, the resistor R19 is electrically connected with the base end of a triode Q1, the emitter of the triode Q1 is grounded through a resistor R3, and the collector of the triode Q1 is electrically connected with a TP13 end.
3. The vehicle-mounted smoke sensor for detecting hydrogen fluoride and preventing electrolyte leakage according to claim 1, characterized in that: The temperature detection circuit includes a thermistor RT1, the 2 end of the thermistor RT1 is grounded, the 1 end is electrically connected with a TEMP_ADCIN_PG4_P38 end, the thermistor RT1 is electrically connected with one end of a resistor R26, the other end of the resistor R26 is electrically connected with a +3.3V end, the +3.3V end is respectively electrically connected with one end of a capacitor C24 and a capacitor C26, and the other end of the capacitor C24 and the capacitor C26 is grounded.
4. The vehicle-mounted smoke sensor for detecting hydrogen fluoride and preventing electrolyte leakage according to claim 1, characterized in that: The hydrogen fluoride detection circuit includes an operational amplifier U205-A, the 4 end of the operational amplifier U205-A is electrically connected with a VCC end, the 8 end of the operational amplifier U205-A is grounded, the 1 end of the operational amplifier U205-A is electrically connected with the 2 end of a connecting seat J3, the 3 end of the operational amplifier U205-A is electrically connected with the sliding end of a sliding rheostat RP30, the 2 end of the operational amplifier U205-A is electrically connected with one end of a sliding rheostat resistor, and the other end of the sliding rheostat resistor is grounded.
5. The vehicle-mounted smoke sensor for detecting hydrogen fluoride and preventing electrolyte leakage according to claim 1, characterized in that: The sensor base (2) is detachably provided with a double-wavelength emission tube (4) and an optical mounting rack (6), and the sensor base (2) is also detachably provided with an interface (3).
6. The vehicle-mounted smoke sensor for detecting hydrogen fluoride and preventing electrolyte leakage according to claim 5, characterized in that: The optical mounting rack (6) is detachably provided with a first receiving tube (5) and a second receiving tube (7).