CN113959895A - Battery bulge detection device and method thereof - Google Patents

Battery bulge detection device and method thereof Download PDF

Info

Publication number
CN113959895A
CN113959895A CN202111144071.5A CN202111144071A CN113959895A CN 113959895 A CN113959895 A CN 113959895A CN 202111144071 A CN202111144071 A CN 202111144071A CN 113959895 A CN113959895 A CN 113959895A
Authority
CN
China
Prior art keywords
temperature
air pressure
battery
controller
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111144071.5A
Other languages
Chinese (zh)
Inventor
闻启栋
汤奕
谭敏刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liyang Research Institute of Southeast University
Original Assignee
Liyang Research Institute of Southeast University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liyang Research Institute of Southeast University filed Critical Liyang Research Institute of Southeast University
Priority to CN202111144071.5A priority Critical patent/CN113959895A/en
Publication of CN113959895A publication Critical patent/CN113959895A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The embodiment of the application provides a battery bulge detection device and a method thereof, wherein the temperature in a shell is adjusted to be within a set range through a temperature balance assembly, and a controller presets T through a temperature-air pressure relation algorithm0-1 to T0And the first air pressure threshold and the second air pressure threshold corresponding to each temperature between +1, the air pressure of the air bag detected by the air pressure sensor is compared with the first air pressure threshold to judge whether the battery is bulged, and the air bag is deflated when the air pressure of the air bag reaches the second air pressure threshold. The invention realizes automatic detection and alarm of the battery bulge, finds the bulge battery in time and avoids safety accidents such as explosion and fire caused by the battery bulge.

Description

Battery bulge detection device and method thereof
Technical Field
The application relates to the technical field of battery bulge detection, in particular to a battery bulge detection device and a method thereof.
Background
The battery is used as an energy source, can obtain current which has stable voltage and current, is stably supplied for a long time and is slightly influenced by the outside, has simple structure, simple and easy charging and discharging operation, is not influenced by the outside climate and temperature, has stable and reliable performance, and plays a great role in various aspects of modern social life. The battery can bulge due to overcharge, overdischarge and other reasons in the using process, the battery is broken and fried open and scorched under severe conditions, and even safety accidents such as explosion, fire and the like are caused, so that the battery bulge phenomenon needs to be detected in time.
Disclosure of Invention
The embodiment of the application provides a battery bulge detection device and a method thereof, which can realize automatic detection and alarm of the battery bulge, timely find the bulge battery and avoid safety accidents such as explosion and fire caused by the battery bulge.
In one embodiment of the present application, a battery bulge detection device is provided, including: a casing for holding the battery, the bottom of battery is fixed in on the inner wall of the bottom of casing, the cover be equipped with on the battery with the gasbag of battery shape looks adaptation, paste on the gasbag and lean on one side of battery is provided with the ventilation passageway, be provided with electronic valve on the gasbag, be provided with baroceptor in the gasbag, still be provided with temperature sensor in the casing, the top of casing is provided with and is used for adjusting the temperature balance subassembly of temperature in the casing, electronic valve baroceptor temperature sensor temperature balance subassembly all is connected with the controller, the controller still is connected with unlimited communication module.
In an embodiment, the temperature balancing assembly includes a first fan, an air outlet of the first fan faces one side of the battery, an air inlet of the first fan is provided with a semiconductor heating sheet and a semiconductor cooling sheet, a front surface of the semiconductor heating sheet faces the inner side of the housing, and a front surface of the semiconductor cooling sheet faces the inner side of the housing.
In one embodiment, a second fan is arranged on the reverse side of the semiconductor heating sheet, and a third fan is arranged on the reverse side of the semiconductor cooling sheet.
In an embodiment of the present application, a battery bulge detection method is provided, which includes:
step one, adjusting the temperature in the shell to be within a set range, and setting the temperature in the shell to be T by the controller0When the temperature value acquired by the controller and acquired by the temperature sensor is higher than T0The value of (c) is 1 c,the temperature balancing assembly operates to reduce the temperature within the housing to T0When the temperature value acquired by the controller and acquired by the temperature sensor is lower than T0A value of 1 ℃, the temperature balancing assembly operates to raise the temperature within the housing to T0；
Step two, the air pressure sensor measures the temperature of the shell at T0The initial air pressure of the air bag is transmitted to the controller to check and correct the temperature-air pressure relation algorithm, and the controller presets T through the temperature-air pressure relation algorithm0-1 to T0A first air pressure threshold and a second air pressure threshold corresponding to each temperature between + 1;
step three, the controller collects the air pressure of the air bag detected by the air pressure sensor in real time, if the air pressure of the air bag detected by the air pressure sensor reaches the first air pressure threshold value of the temperature T at the temperature T, the battery is confirmed to be bulged, and the wireless communication module sends alarm information to the cloud platform;
and step four, if the air pressure of the air bag collected by the controller continues to rise and reaches the second air pressure threshold corresponding to the temperature T, the electronic valve is opened to deflate the air bag.
In an embodiment, in the second step, the temperature-air pressure relationship algorithm formula is as follows:
P＝kT+b，
wherein P is the air pressure of the air bag at the temperature T, and the value range of the temperature T is T0－1≤T≤T0+1, K is the air pressure coefficient and b is the air pressure constant.
In an embodiment, in the second step, the method for verifying and correcting the temperature-air pressure relationship algorithm by the controller is as follows:
calculating the temperature T of the air bag through a temperature-air pressure relation algorithm0Pressure P of the atmosphereL；
Air pressure PLComparing with the initial air pressure to obtain a difference to obtain a correction parameter,
b0＝PL－PC，
in the formula, b0To modify the parameters, PCIs the initial air pressure;
finally, the corrected temperature and air pressure relation algorithm formula is obtained as follows:
P＝kT+b－b0i.e. P ═ kT + b- (P)L－PC)。
In an embodiment, in the second step, the first air pressure threshold corresponding to the temperature T is P + m, and the second air pressure threshold is P + m + n.
In one embodiment, m has a value of 20 and n has a value of 20.
According to the battery bulge detection device and the battery bulge detection method, the temperature in the shell is adjusted to be within a set range through the temperature balance assembly, and the controller presets T through a temperature-air pressure relation algorithm0-1 to T0And the first air pressure threshold and the second air pressure threshold corresponding to each temperature between +1, the air pressure of the air bag detected by the air pressure sensor is compared with the first air pressure threshold to judge whether the battery is bulged, and the air bag is deflated when the air pressure of the air bag reaches the second air pressure threshold. The invention realizes automatic detection and alarm of the battery bulge, finds the bulged battery in time, avoids safety accidents such as explosion and fire caused by the battery bulge, and detects the bulge by using the principle of air bag deformation, thereby avoiding the problems that the sensor is directly contacted with the battery and the battery is more seriously damaged due to extrusion with the sensor when the battery bulge.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a battery bulge detection device according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a battery bulge detection device according to an embodiment of the present application;
fig. 3 is a flowchart of a battery bulge detection method according to an embodiment of the application.
The reference numbers illustrate:
1. a housing; 2. a battery; 3. an air bag; 4. a ventilation channel; 5. an electronic valve; 6. an air pressure sensor; 7. a temperature sensor; 8. a temperature balancing component; 81. a first fan; 82. a semiconductor heat generating sheet; 83. a semiconductor refrigeration sheet; 84. a second fan; 85. and a third fan.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
As shown in fig. 1, the battery bulge detecting apparatus of the present invention includes: a casing 1 for holding battery 2, the bottom of battery 2 is fixed in on the inner wall of casing 1's bottom, the cover is equipped with gasbag 3 with battery shape looks adaptation on battery 2, the last one side of leaning on battery 2 that leans on of gasbag 3 is provided with ventilation channel 4, be provided with electronic valve 5 on the gasbag 3, be provided with pressure sensor 6 in the gasbag 3, still be provided with temperature sensor 7 in the casing 1, the top of casing 1 is provided with the temperature balance subassembly 8 that is used for adjusting the casing internal temperature, electronic valve 5, pressure sensor 6, temperature sensor 7, temperature balance subassembly 8 all is connected with the controller, the controller still is connected with the unlimited communication module.
The controller is preset with a temperature T0The temperature sensor 7 transmits the measured actual temperature to the controller, and when the actual temperature is higher than the temperature T0Then the controller controls the temperature balance component 8 to refrigerate, and the temperature in the shell 1 is reduced to T0When the actual temperature is lower than the temperature T0The controller controls the temperature balance assembly 8 to heat, so as to raise the temperature in the shell 1 to T0Thereby achieving the temperature maintenance in the case 1 at T0Accessory, temperature T0Typically set at 23 deg.c.
In one embodiment, as shown in fig. 2, the temperature balancing assembly 8 includes a first fan 81, an air outlet of the first fan 81 faces one side of the battery 2, an air inlet of the first fan 81 is provided with a semiconductor heating sheet 82 and a semiconductor cooling sheet 83, a front surface of the semiconductor heating sheet 82 faces the inner side of the housing 1, and a front surface of the semiconductor cooling sheet 83 faces the inner side of the housing 1.
In this embodiment, the front surface of the semiconductor heating sheet 82 is a heating surface, the front surface of the semiconductor cooling sheet 83 is a cooling surface, and the first fan 81 can realize air flow in the housing 1, so that temperature balance in the housing 1 is easily realized.
In one embodiment, the second fan 84 is disposed on the opposite side of the semiconductor heating sheet 82, the third fan 85 is disposed on the opposite side of the semiconductor cooling sheet 83, the second fan 84 can accelerate the air flow on the opposite side (cooling side) of the semiconductor heating sheet 82, so as to improve the working efficiency, and the third fan 85 can accelerate the air flow on the opposite side (heating side) of the semiconductor cooling sheet 83, so as to improve the working efficiency.
As shown in fig. 3, the present invention provides a method for detecting battery bulge, which comprises the following steps:
step one, adjusting the temperature in the shell 1 within a set range, and setting the temperature in the shell 1 to be T by a controller0When the temperature value acquired by the controller and acquired by the temperature sensor is higher than T0Of 1 c, the temperature-equalizing assembly 8 operates to reduce the temperature inside the casing 1 to T0When the controller acquires that the temperature value of the temperature sensor 7 is lower than T0Of 1 c, the temperature-equalizing assembly 8 operates to raise the temperature inside the housing 1 to T0；T0The value of (A) is generally 23 ℃.
Step two, the air pressure sensor 6 measures the temperature of the shell 1 at T0The initial air pressure of the air bag 3 is transmitted to the controller to check and correct the temperature-air pressure relation algorithm, and the controller presets T through the temperature-air pressure relation algorithm0-1 to T0A first air pressure threshold and a second air pressure threshold corresponding to each temperature between + 1;
step three, the controller collects the air pressure of the air bag 3 detected by the air pressure sensor 6 in real time, if the air pressure of the air bag 3 detected by the air pressure sensor 6 reaches a first air pressure threshold value of the temperature T at the temperature T, it is determined that the battery 2 is bulged, and the wireless communication module sends alarm information to the cloud platform;
and step four, if the air pressure of the air bag 3 collected by the controller is continuously increased and reaches a second air pressure threshold value corresponding to the temperature T, the controller controls the electronic valve 5 to be opened to deflate the air bag 3.
In one embodiment, in step two, the temperature-air pressure relationship algorithm formula is as follows:
P＝kT+b，
wherein P is the air pressure of the air bag 3 at the temperature T, and the value range of the temperature T is T0－1≤T≤T0+1, K is the air pressure coefficient and b is the air pressure constant.
k. The value of b is related to the size of the air bag 3, the inflation quantity of the air bag 3 and the size of the battery 2, when the type of the air bag 3, the inflation quantity of the air bag 3 and the size of the battery 2 are determined, the air pressures of the air bag 3 at two different temperatures can be measured through experiments, and the values of k and b can be obtained according to known measured data.
In one embodiment, the air bag 3 may be deviated from the installation position of the air bag 3 before use, so that the air pressure sensor 6 is required to measure the temperature T of the shell 1 during use0The initial air pressure of the air bag 3 is transmitted to the controller to carry out verification and correction on the temperature-air pressure relation algorithm. In the second step, the method for verifying and correcting the temperature-air pressure relation algorithm by the controller is as follows:
calculating the temperature T of the air bag 3 by a temperature-air pressure relation algorithm0Pressure P of the atmosphereL；
Air pressure PLComparing with the initial air pressure to obtain a difference to obtain a correction parameter,
b0＝PL－PC，
in the formula, b0To modify the parameters, PCIs the initial air pressure;
and finally, obtaining a temperature and air pressure relation algorithm formula after checking and correction as follows:
P＝kT+b－b0i.e. P ═ kT + b- (P)L－PC)。
In an embodiment, in the second step, the first air pressure threshold corresponding to the temperature T is P + m, and the second air pressure threshold is P + m + n. m has a value of 20 and n has a value of 20.
According to the battery bulge detection device and method provided by the invention, the temperature in the shell 1 is adjusted within a set range through the temperature balance assembly 8, and the controller presets T through a temperature-air pressure relation algorithm0-1 to T0And a first air pressure threshold and a second air pressure threshold corresponding to each temperature between +1, detecting the air pressure of the air bag 3 through the air pressure sensor 6, comparing the air pressure with the first air pressure threshold, judging whether the battery 2 is bulged, and deflating when the air pressure of the air bag 3 reaches the second air pressure threshold. The invention realizes automatic detection and alarm of the bulge of the battery 2, finds the bulge of the battery 2 in time, avoids safety accidents such as explosion and fire caused by the bulge of the battery 2, and detects the bulge by using the deformation principle of the air bag 3, thereby avoiding the problems that the sensor is directly contacted with the battery 2 and the battery 2 is more seriously damaged due to the extrusion of the battery 2 and the sensor.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims (8)

1. Battery bulge detection device, its characterized in that includes: a casing for holding the battery, the bottom of battery is fixed in on the inner wall of the bottom of casing, the cover be equipped with on the battery with the gasbag of battery shape looks adaptation, paste on the gasbag and lean on one side of battery is provided with the ventilation passageway, be provided with electronic valve on the gasbag, be provided with baroceptor in the gasbag, still be provided with temperature sensor in the casing, the top of casing is provided with and is used for adjusting the temperature balance subassembly of temperature in the casing, electronic valve baroceptor temperature sensor temperature balance subassembly all is connected with the controller, the controller still is connected with unlimited communication module.
2. The battery bulge detection device according to claim 1, wherein the temperature balance assembly comprises a first fan, an air outlet of the first fan faces one side of the battery, an air inlet of the first fan is provided with a semiconductor heating sheet and a semiconductor cooling sheet, a front surface of the semiconductor heating sheet faces the inner side of the housing, and a front surface of the semiconductor cooling sheet faces the inner side of the housing.
3. The battery bulge detection device of claim 2, wherein a second fan is disposed on an opposite side of the semiconductor heating sheet, and a third fan is disposed on an opposite side of the semiconductor cooling sheet.
4. A battery bulge detection method using the battery bulge detection device according to claims 1 to 3, characterized by comprising:
step one, adjusting the temperature in the shell to be within a set range, and setting the temperature in the shell to be T by the controller0When the temperature value acquired by the controller and acquired by the temperature sensor is higher than T0A value of 1 ℃, the temperature balancing assembly operates to lower the temperature within the housing to T0When the temperature value acquired by the controller and acquired by the temperature sensor is lower than T0A value of 1 ℃, the temperature balancing assembly operates to raise the temperature within the housing to T0；
Step two, the air pressure sensor measures the temperature of the shell at T0The initial air pressure of the air bag is transmitted to the controller to carry out verification and correction on the temperature-air pressure relation algorithm, and the controller presets T through the temperature-air pressure relation algorithm after verification and correction0-1 to T0A first air pressure threshold and a second air pressure threshold corresponding to each temperature between + 1;
step three, the controller collects the air pressure of the air bag detected by the air pressure sensor in real time, if the air pressure of the air bag detected by the air pressure sensor reaches the first air pressure threshold value of the temperature T at the temperature T, the battery is confirmed to be bulged, and the wireless communication module sends alarm information to the cloud platform;
and step four, if the air pressure of the air bag collected by the controller continues to rise and reaches the second air pressure threshold corresponding to the temperature T, the electronic valve is opened to deflate the air bag.
5. The battery bulge detection method according to claim 4, wherein in the second step, the temperature-air pressure relation algorithm formula is as follows:
P＝kT+b，
wherein P is the air pressure of the air bag at the temperature T, and the value range of the temperature T is T0－1≤T≤T0+1, K is the air pressure coefficient and b is the air pressure constant.
6. The battery bulge detection method according to claim 5, wherein in the second step, the controller performs verification and correction on the temperature-air pressure relation algorithm as follows:
calculating the temperature T of the air bag through a temperature-air pressure relation algorithm0Pressure P of the atmosphereL；
Air pressure PLComparing with the initial air pressure to obtain a difference to obtain a correction parameter,
b0＝PL－PC，
in the formula, b0To modify the parameters, PCIs the initial air pressure;
finally, the corrected temperature and air pressure relation algorithm formula is obtained as follows:
P＝kT+b－b0i.e. P ═ kT + b- (P)L－PC)。
7. The method as claimed in claim 6, wherein in the second step, the first air pressure threshold corresponding to the temperature T is P + m, and the second air pressure threshold is P + m + n.
8. The battery bulge detection method according to claim 7, wherein m has a value of 20 and n has a value of 20.
CN202111144071.5A 2021-09-28 2021-09-28 Battery bulge detection device and method thereof Pending CN113959895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111144071.5A CN113959895A (en) 2021-09-28 2021-09-28 Battery bulge detection device and method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111144071.5A CN113959895A (en) 2021-09-28 2021-09-28 Battery bulge detection device and method thereof

Publications (1)

Publication Number Publication Date
CN113959895A true CN113959895A (en) 2022-01-21

Family

ID=79462958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111144071.5A Pending CN113959895A (en) 2021-09-28 2021-09-28 Battery bulge detection device and method thereof

Country Status (1)

Country Link
CN (1) CN113959895A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115112036A (en) * 2022-06-28 2022-09-27 上海拜安传感技术有限公司 Monitoring system of battery module
CN115642355A (en) * 2022-10-09 2023-01-24 刘洪涛 Soft package lithium battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115112036A (en) * 2022-06-28 2022-09-27 上海拜安传感技术有限公司 Monitoring system of battery module
CN115642355A (en) * 2022-10-09 2023-01-24 刘洪涛 Soft package lithium battery
CN115642355B (en) * 2022-10-09 2023-11-17 深圳市增长点科技有限公司 Soft package lithium battery

Similar Documents

Publication Publication Date Title
CN113959895A (en) Battery bulge detection device and method thereof
US6571566B1 (en) Method of determining refrigerant charge level in a space temperature conditioning system
CN104482638A (en) Air conditioner and fault detection method for electronic expansion valve of air conditioner
CN107940694A (en) The exhaust protection control method and system of a kind of air conditioner
US9541907B2 (en) System and method for calibrating parameters for a refrigeration system with a variable speed compressor
CN102192808A (en) Device and method for detecting wind pressure
CN108518806A (en) Progress control method, device, compressor, air conditioner and readable storage medium storing program for executing
CN103775306B (en) Reactive compressor surge for fuel cell power system alleviates strategy
CN108758970B (en) Abnormal state detection method of exhaust temperature sensing bulb and compressor protection method
US8830079B2 (en) Low air conditioning refrigerant detection method
CN108646195A (en) A kind of battery simulation simulation test machine and its control method
CN107255340A (en) Prevent the control method and control system of the overheat of compressor of transducer air conditioning
JP6992601B2 (en) Fuel cell system and method for deriving wind speed in fuel cell system
CN106415145A (en) Hvac systems and controls
CN107388416A (en) Air-conditioner outdoor unit and its control method
CN105509253B (en) Transducer air conditioning and its control method
JP6488974B2 (en) Battery device
CN107289698B (en) Compressor frequency control system and control method, train convertible frequency air-conditioner
CN109210686A (en) A kind of control method and air conditioner of the anti-cold wind of air-conditioning
JP2014051264A (en) Battery cooling-heating control system and control method
CN107560101A (en) A kind of fault detection method of air conditioner electronic expansion valve
CN108292763A (en) The leak supervision of fuel cell system
JP2019021387A (en) Abnormality detection device
CN109556244A (en) Air-conditioning system and its leaving air temp control method
CN106080097B (en) The control method and mounted air conditioner system of mounted air conditioner system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication