CN209471538U - A kind of lithium battery fire alarm switch - Google Patents
A kind of lithium battery fire alarm switch Download PDFInfo
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- CN209471538U CN209471538U CN201920108210.0U CN201920108210U CN209471538U CN 209471538 U CN209471538 U CN 209471538U CN 201920108210 U CN201920108210 U CN 201920108210U CN 209471538 U CN209471538 U CN 209471538U
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Abstract
The utility model relates to alarm switch technical fields, in particular a kind of lithium battery fire alarm switch, including main control unit and box body, the voltage acquisition interface, current acquisition module is arranged in the lithium battery installs case to be monitored, and it is all connected with AD conversion module, voltage acquisition interface, current acquisition module is connect with lithium battery output end, AD conversion module, temperature collecting module is connected to CAN communication module, main control unit is connect by CAN bus with CAN communication module, CAN communication module is connect by module for metering electric quantity with AD conversion module, CAN communication module is connected with gas chromatograph, gas in case is sent to gas chromatograph by gas samping pump, the gas chromatograph gas componant carries out qualitative analysis, the main control unit is also connected with alarm module.The utility model, energy more intuitive reflection lithium battery interior working condition when occurring for dangerous situation, issue sound-light alarm, provide information for personnel escape, can effectively reduce casualties.
Description
Technical field
The utility model relates to alarm switch technical field, specially a kind of lithium battery fire alarm switch.
Background technique
The mainstream battery that new-energy automobile power battery uses at present is lithium battery (including ternary battery).Along with
Security issues become increasingly urgent for lithium battery, as in battery use process because between installation casing hit, connector loosening caused
Stream fever, battery management system be out of control cause to overcharge or over-discharge, because of inside battery or outside line short circuit caused by external force factor
Etc. reasons cause internal temperature of battery to increase and electrolyte volatilization caused to decompose and generate fuel gas, bulge, quick-fried occurs for battery
It splits finally there is a situation where fire, how the dangerous situation detected to be given in time to driver's cabin and alarm, and take and promptly arrange
It applies, alarms to personnel escape, the harm of fire can be effectively reduced, protect life and property safety.
Utility model content
The purpose of this utility model is to provide a kind of lithium battery fire alarm switchs, to solve to mention in above-mentioned background technique
Out the problem of.The more intuitive reflection lithium battery interior working condition of the lithium battery fire alarm switch energy, is dangerous situation
When, sound-light alarm is issued, information is provided for personnel escape, can effectively reduce casualties.
To achieve the above object, the utility model provides the following technical solutions:
A kind of lithium battery fire alarm switch, including main control unit and box body further include that voltage acquisition interface, electric current are adopted
Collect module and temperature collecting module and gas samping pump, the voltage acquisition interface, current acquisition module setting to be supervised
In the lithium battery installs case of survey, and it is all connected with AD conversion module, voltage acquisition interface, current acquisition module and lithium battery output end
Connection, the temperature acquisition mould are also disposed in the lithium battery installs case to be monitored, the AD conversion module, temperature acquisition mould
Block is connected to CAN communication module, and the main control unit is mounted in box body, and is connect by CAN bus with CAN communication module,
The CAN communication module is connect by module for metering electric quantity with AD conversion module, and CAN communication module is connected with gas chromatograph,
The gas samping pump is mounted in the lithium battery installs case to be monitored, and gas in case is sent to gas chromatograph, should
Gas chromatograph gas componant carries out qualitative analysis, and the main control unit is also connected with alarm module.
Preferably, the alarm module includes the buzzer and alarm lamp being mounted on box body.
Preferably, further include OLED display screen connected to the main control unit and manual switch, the OLED display screen with
And manual switch is mounted on box body.
Preferably, the main control unit uses STC12C5A60S chip, and current acquisition module uses ACS712ELCTRG-
05B type Hall-type current transformer, AD conversion module use MSP430, and module for metering electric quantity uses HLW8012 chip, and temperature is adopted
Collect module and uses DS18B20 temperature sensor.
Preferably, the buzzer uses resolution ratio for the OLED screen of 128 × 64, model WEO012864G.
Compared with prior art, the utility model has the beneficial effects that
The utility model, in use, voltage acquisition interface, ACS712ELCTRG-05B type Hall-type current transformer,
DS18B20 temperature sensor, can be to the major parameters such as battery operating voltage, electric current, temperature and state-of-charge and working condition
Real time monitoring and health evaluating are carried out, qualitative analysis is carried out to gas componant using portable gas chromatograph, when parameter is different
Switching system can pass through the autonomous sound-light alarm of alarm lamp 4 when often.
The utility model, can the more intuitive early stage dangerous situation to lithium battery box shown, can when there is dangerous situation
Sound-light alarm is issued to driver's cabin, manual switch provides guarantee for dangerous situation elimination, and it is subsequent that display screen, which shows battery case number,
Investigation of unpacking processing provides foundation.
Detailed description of the invention
Fig. 1 is the utility model principle block diagram；
Fig. 2 is the utility model structure diagram.
In figure: 1- box body；2-OLED display screen；3- manual switch；4- alarm lamp；5- buzzer；6-CAN communicates mould
Block interface.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1~2 are please referred to, the utility model provides a kind of technical solution:
A kind of lithium battery fire alarm switch, including main control unit and box body 1, further include voltage acquisition interface, electric current
Acquisition module and temperature collecting module and gas samping pump, the voltage acquisition interface, current acquisition module setting are being wanted
In the lithium battery installs case of monitoring, and it is all connected with AD conversion module, voltage acquisition interface, current acquisition module and lithium battery export
End connection, the temperature acquisition mould are also disposed in the lithium battery installs case to be monitored, the AD conversion module, temperature acquisition
Module is connected to CAN communication module, and the main control unit is mounted in box body 1, and is connected by CAN bus and CAN communication module
It connects, the CAN communication module is connect by module for metering electric quantity with AD conversion module, and CAN communication module is connected with gas-chromatography
Instrument, the gas samping pump are mounted in the lithium battery installs case to be monitored, and gas in case is sent to gas chromatograph,
The gas chromatograph gas componant carries out qualitative analysis, and the main control unit is also connected with alarm module.
The alarm module includes the buzzer 5 and alarm lamp 4 being mounted on box body 1.
It further include OLED display screen 2 connected to the main control unit and manual switch 3, the OLED display screen 2 and hand
Dynamic switch 3 is mounted on box body 1.
The main control unit uses STC12C5A60S chip, and current acquisition module uses ACS712ELCTR G-05B type suddenly
That formula current transformer, AD conversion module use MSP430, and module for metering electric quantity uses HLW8012 chip, temperature collecting module
Using DS18B20 temperature sensor.
The OLED display screen 2 uses resolution ratio for the OLED screen of 128 × 64, model WEO012864G.
As shown in Fig. 2, the OLED display screen 2 of the alarm switch, manual switch 3, alarm lamp 4, buzzer 5, CAN are logical
Letter module interface 6 is corresponding is mounted on the inside and outside of box body 1, and voltage acquisition interface, current acquisition module are arranged in be monitored
It in lithium battery installs case, and is connected on the input terminal of lithium battery, gas samping pump is mounted on the lithium battery to be monitored peace
In vanning, and gas in case is sent to gas chromatograph, qualitative analysis is carried out to gas componant.Installation dimension specification is 22mm
× 44mm, the size often use panel-switch installation dimension identical with driver's cabin.
Detection data and alarm condition are carried out real-time display by OLED display screen 2, and display content includes battery case label,
Detector working condition, working condition content are as follows: normal work, combustible gas alarm, high temperature alarm, fire alarm, fire extinguishing
Agent triggering, fault alarm；
Buzzer 5, when dangerous situation occurs for monitoring point, buzzer 5 issues ear-piercing alarm, which is integrated with sound
Light warning function, when dangerous situation occurs for monitoring point, alarm switch can issue eye-catching sound-light alarm；
Alarm lamp 4 uses (three groups) luminous indicating lamp, when primary dangerous situation occurs for monitoring point, yellow indicator lamp interval
Property flashing；When there is higher level dangerous situation, yellow indicator lamp and red indicating light are always on；
Faulty action preventing manual switch in necessary situation, can be operated by driver, and starting extinguishing chemical is put out a fire；
CAN communication module is communicated between converter, DS18B20 temperature sensor by CAN bus with visiting, and
Has CAN forwarding capability；
Main control unit, 2 manual switch 3 of OLED display screen, alarm lamp 4, the buzzer 5 of the alarm switch are adopted with voltage
Collect interface, current acquisition module, converter, DS18B20 temperature sensor, composition CAN line Intranet, is received by response mode
Lithium battery box house environmental data is installed, and is forwarded to entire car controller CAN line outer net.
A kind of lithium battery fire alarm switch, alarm include the following steps:
Detection data and alarm condition are carried out real-time display by OLED display screen 2, and display strategy is as follows:
1. combustible gas alarm: combustible gas leakage occurs
2. high temperature alarm: battery case internal temperature is higher than given threshold
3. fire alarm: open fire occur
4. extinguishing chemical triggers: extinguishing chemical has triggered
5. fault alarm: detector breaks down
6. battery case is numbered
Display screen uses resolution ratio for 128 × 64 OLED screen, is mounted at alarm switch top cover, the display screen is without back
Light has the characteristics that low-power consumption；
Buzzer 5, when dangerous situation occurs for monitoring point, buzzer issues ear-piercing alarm；
Audible alarm is carried out using the buzzer of dB > 85 (less than within the scope of 1 meter), when dangerous situation occurs for monitoring point, buzzing
Device 5 issues ear-piercing alarm, reminds driver；
Luminous indicating lamp is mounted at top cover, when primary dangerous situation occurs for monitoring point, the flashing of yellow indicator lamp intermittent；
When there is higher level dangerous situation, yellow indicator lamp and red indicating light are always on；
Faulty action preventing manual switch has to break and dials component, in necessary situation, can be operated by driver, start extinguishing chemical
It puts out a fire；
Alarm switch is internally integrated CAN communication module, can between DS18B20 temperature sensor, gas samping pump etc.
It is communicated by CAN bus, and has CAN forwarding capability.
In order to adapt to the requirement of new-energy automobile instrument desk installation dimension, increase the installation versatility of alarm switch, the alarm
Switch installation dimension is (width) 22mm × (length) 44mm, identical as the common switch installation dimension of Auto Instrument desk.
OLED display screen 2 carries out threshold diagnostic to measured value and shows, and carries out sound-light alarm, lithium by alarm lamp 4
Battery voltage signal, which is directly sent into after converter is converted to digital quantity through voltage acquisition interface, send main control chip to handle, electric current letter
Number a voltage value linear with electric current is obtained by current acquisition module, then is inputted converter conversion conversion
To be sent into main control chip by CAN communication module after digital quantity, temperature signal is directly acquired by temperature acquisition mould, logical by CAN
Module input main control chip processing is interrogated, then again runs main control chip typing lithium battery SOC measurement method program and complete machine
Program, SOC measurement method uses capacity integration method, and this method is a kind of common electric quantity accumulation method, passes through accumulation battery
Electricity in charge or discharge estimates the SOC of battery, and is carried out according to logarithms such as the voltage of battery, temperature, discharge rates
Compensation.Gas componant test extracts the gas close to lithium battery vent position using sampling pump, utilizes portable gas phase
Chromatograph carries out qualitative analysis to gas componant, and signal is sent into main control chip processing by CAN communication module, can be in environment temperature
Degree and flue gas volume score just trigger detection alarm when varying less, therefore are able to achieve lithium battery fire early detection.
The utility model, in use, voltage acquisition interface, ACS712ELCTRG-05B type Hall-type current transformer,
DS18B20 temperature sensor, can be to the major parameters such as battery operating voltage, electric current, temperature and state-of-charge and working condition
Real time monitoring and health evaluating are carried out, qualitative analysis is carried out to gas componant using portable gas chromatograph, when parameter is different
Switching system can pass through the autonomous sound-light alarm of alarm lamp 4 when often.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of lithium battery fire alarm switch, including main control unit and box body, which is characterized in that further include that voltage acquisition connects
Mouth, current acquisition module and temperature collecting module and gas samping pump, the voltage acquisition interface, current acquisition module setting
In the lithium battery installs case to be monitored, and it is all connected with AD conversion module, voltage acquisition interface, current acquisition module and lithium electricity
The connection of pond output end, the temperature acquisition mould are also disposed in the lithium battery installs case to be monitored, the AD conversion module, temperature
Degree acquisition module is connected to CAN communication module, and the main control unit is mounted in box body, and passes through CAN bus and CAN communication mould
Block connection, the CAN communication module are connect by module for metering electric quantity with AD conversion module, and CAN communication module is connected with gas phase
Chromatograph, the gas samping pump are mounted in the lithium battery installs case to be monitored, and gas in case is sent to gas phase color
Spectrometer, the gas chromatograph gas componant carry out qualitative analysis, and the main control unit is also connected with alarm module.
2. a kind of lithium battery fire alarm switch according to claim 1, it is characterised in that: the alarm module includes peace
Buzzer and alarm lamp on box body.
3. a kind of lithium battery fire alarm switch described in any one of -2 according to claim 1, it is characterised in that: further include with
The OLED display screen and manual switch, the OLED display screen and manual switch of main control unit connection are mounted on box body.
4. a kind of lithium battery fire alarm switch according to claim 1, it is characterised in that: the main control unit uses
STC12C5A60S chip, current acquisition module use ACS712ELCTRG-05B type Hall-type current transformer, AD conversion module
Using MSP430, module for metering electric quantity uses HLW8012 chip, and temperature collecting module uses DS18B20 temperature sensor.
5. a kind of lithium battery fire alarm switch according to claim 3, it is characterised in that: the OLED display screen uses
Use resolution ratio for the OLED screen of 128 × 64, model WEO012864G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920108210.0U CN209471538U (en) | 2019-01-22 | 2019-01-22 | A kind of lithium battery fire alarm switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920108210.0U CN209471538U (en) | 2019-01-22 | 2019-01-22 | A kind of lithium battery fire alarm switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209471538U true CN209471538U (en) | 2019-10-08 |
Family
ID=68092361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920108210.0U Active CN209471538U (en) | 2019-01-22 | 2019-01-22 | A kind of lithium battery fire alarm switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209471538U (en) |
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2019
- 2019-01-22 CN CN201920108210.0U patent/CN209471538U/en active Active
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