CN113884202A - Electric automobile charge-discharge interface temperature monitoring device - Google Patents
Electric automobile charge-discharge interface temperature monitoring device Download PDFInfo
- Publication number
- CN113884202A CN113884202A CN202111261000.3A CN202111261000A CN113884202A CN 113884202 A CN113884202 A CN 113884202A CN 202111261000 A CN202111261000 A CN 202111261000A CN 113884202 A CN113884202 A CN 113884202A
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- China
- Prior art keywords
- temperature
- monitoring device
- charging
- temperature monitoring
- electric vehicle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/20—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a temperature monitoring device of a charge-discharge interface of an electric automobile, which is used for monitoring the temperature of the charge or discharge interface in the charge and discharge processes so as to further analyze and judge overheating risks of the electric automobile and further implement safety intervention. The invention can monitor the temperature of the charge-discharge interface in real time, thereby reflecting whether the charging interface is overheated or not more intuitively and timely, being beneficial to further analyzing and judging the overheating risk of the electric automobile, further implementing safety intervention, having simple and reliable structure and wide applicability.
Description
Technical Field
The invention relates to a temperature monitoring device, in particular to a temperature monitoring device for monitoring the temperature of a charging and discharging interface of an electric automobile.
Background
Safety problems in the charging process of the electric automobile cannot be ignored, if an overheating condition occurs in the charging process, equipment or the automobile is damaged if the overheating condition occurs, and fire disasters may occur if the overheating condition occurs. At present, whether overheating exists in the charging process or not is generally realized by a method for monitoring temperature change in the charging or discharging process by arranging a temperature sensor at an easily overheated point of a charging or discharging interface, most of temperature monitoring devices in the market are plastic or metal shell packaged temperature sensors, wherein the plastic packaged temperature sensors cannot meet the requirements of temperature measurement precision and timeliness due to low heat conductivity coefficients, and the metal packaged temperature sensors have the characteristic of low withstand voltage and cannot meet the requirements of products on high withstand voltage and high measurement precision of the temperature sensors.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a temperature monitoring device which can be used for analyzing the overheating risk during charging of an electric automobile.
The technical scheme is as follows: the electric vehicle charging and discharging interface temperature monitoring device is used for monitoring the temperature of a charging or discharging interface of an electric vehicle in the charging or discharging process, and comprises a temperature sensor and a temperature signal conversion unit, wherein the temperature sensor is electrically connected with the temperature signal conversion unit, and the temperature signal conversion unit is in communication connection with a vehicle control decision unit.
The charging and discharging interface is a charging or discharging plug, a socket or a power strip, the plug, the socket or the power strip comprises a power terminal and a signal terminal, and the temperature sensor is arranged on the surface and the inside of the power terminal, or on a cable connected with the power terminal or on a plastic structural member on the surface of the power terminal.
The temperature sensor comprises a heat-conducting insulating shell and a temperature sensing chip, wherein the temperature sensing chip is arranged in the shell and is packaged by an insulating sealing medium. The shell of the temperature sensor is made of high heat conduction insulating material. The sealing medium is insulating epoxy resin.
Further, the shell of the temperature sensor is made of ceramic, and the ceramic is any one of alumina ceramic, aluminum nitride ceramic, beryllium oxide, boron nitride, magnesium oxide and silicon nitride.
Furthermore, the temperature sensing chip is a positive temperature coefficient or negative temperature coefficient chip.
Further, the temperature signal conversion unit is electrically connected with the temperature sensor through a PCB or a connector and a cable.
The temperature conversion unit converts the actually measured temperature value by using a difference compensation algorithm, and transmits the converted temperature value to the automobile control decision unit to obtain more accurate temperature information, wherein the difference compensation algorithm is to find out a difference rule between the actual temperature and the measured value of the detection position of the temperature sensor through one or more groups of tests and perform difference compensation in a software algorithm according to the rule.
Has the advantages that: compared with the prior art, the invention has the following advantages: the temperature monitoring device has the advantages that the heat conductivity coefficient is high, the pressure resistance is good, the temperature of the charge-discharge interface can be monitored in real time, data are verified according to temperature difference values of different temperature areas, corresponding compensation values are matched with software, the difference value between the monitored temperature and the actual temperature is reduced, an automobile control decision unit can acquire more accurate temperature information, and the monitoring accuracy is improved; therefore, whether the charging interface is overheated or not is reflected more intuitively and timely, the electric automobile is helped to analyze and judge the overheating risk timely and accurately, and further safety intervention is implemented, the structure is simple and reliable, and the applicability is wide.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1, the electric vehicle charging and discharging interface temperature monitoring device is used for monitoring the temperature of a charging or discharging interface of an electric vehicle during the charging or discharging process, and comprises a temperature sensor and a temperature signal conversion unit, wherein the temperature sensor is electrically connected with the temperature signal conversion unit, the temperature signal conversion unit is in communication connection with a vehicle control decision unit, and the charging or discharging interface of the vehicle is used for conducting power supply energy andor electric signals during the charging and discharging process; the temperature sensor is used for measuring the temperature of a power supply terminal of a charge-discharge interface, and the temperature signal conversion unit is used for converting and transmitting temperature information, namely comparing and identifying a resistance value presented by the detected temperature and the temperature resistance characteristic of the temperature sensor, converting the resistance value into an electric signal of a temperature value, and then transmitting the electric signal to the automobile control decision unit through the communication interface.
The charging and discharging interface is a charging or discharging plug, a socket or a power strip, and the plug, the socket or the power strip comprises a power terminal and a signal terminal; the temperature sensor is arranged on the surface, inside or on a cable or other structural parts close to the power supply terminal, and the temperature signal conversion unit can be arranged in the charging or discharging interface or on an accessory, and also can be arranged at other positions on the automobile.
The temperature sensor comprises a heat-conducting insulating shell, a temperature sensing chip made of thermoelectric materials and a medium filled between the shell and the temperature sensing chip for packaging and fixing, wherein the shell of the temperature sensor is made of high-heat-conducting insulating materials, the heat conductivity coefficient of the ceramic or other insulating materials with the heat conductivity coefficient higher than that of the ceramic is ceramic, and the ceramic can be aluminum oxide, aluminum nitride, beryllium oxide, boron nitride, magnesium oxide, silicon nitride or other high-heat-conducting components. The sealing medium is insulating epoxy resin or other insulating packaging materials.
The temperature sensing chip in the temperature sensor can be a positive temperature coefficient chip, and the resistance value is increased along with the rise of the temperature; or a negative temperature coefficient chip, and the resistance value is reduced along with the temperature rise.
Further, the temperature signal conversion unit is electrically connected with the temperature sensor through a PCB or other electrical connection modes.
The temperature signal conversion unit is loaded with a temperature conversion program, and the conversion of the temperature can comprise applying a difference compensation algorithm so that the automobile control decision unit can obtain more accurate temperature information. The difference compensation algorithm is to find out the law of the difference between the actual temperature and the measured value of the detection position of the temperature sensor through one or more groups of tests and carry out difference compensation in a software algorithm according to the law.
Claims (10)
1. The utility model provides an electric automobile charge-discharge interface temperature monitoring device for the temperature monitoring of electric automobile's charging or interface that discharges at charging or discharge in-process, its characterized in that, the device includes temperature sensor and temperature signal conversion unit, temperature sensor is connected with temperature signal conversion unit electricity, temperature signal conversion unit and car control decision unit communication are connected.
2. The electric vehicle charging and discharging interface temperature monitoring device according to claim 1, wherein the charging and discharging interface is a charging or discharging plug, socket or socket, the plug, socket or socket comprises a power terminal and a signal terminal, and the temperature sensor is arranged on the surface, inside or on a cable connected with the power terminal or on a plastic structural member on the surface of the power terminal.
3. The electric vehicle charging and discharging interface temperature monitoring device according to claim 1, wherein the temperature sensor comprises a heat-conducting insulating shell and a temperature sensing chip, and the temperature sensing chip is arranged in the shell and encapsulated by an insulating sealing medium.
4. The electric vehicle charging and discharging interface temperature monitoring device according to claim 3, wherein the housing of the temperature sensor is made of a high thermal conductive and insulating material.
5. The electric vehicle charging and discharging interface temperature monitoring device according to claim 4, wherein the housing of the temperature sensor is made of ceramic.
6. The electric vehicle charging and discharging interface temperature monitoring device according to claim 5, wherein the ceramic is any one of alumina ceramic, aluminum nitride ceramic, beryllium oxide, boron nitride, magnesium oxide and silicon nitride.
7. The electric vehicle charging and discharging interface temperature monitoring device according to claim 3, wherein the temperature sensing chip is a positive temperature coefficient or negative temperature coefficient chip.
8. The electric vehicle charging and discharging interface temperature monitoring device according to claim 3, wherein the sealing medium is an insulating epoxy resin.
9. The electric vehicle charging and discharging interface temperature monitoring device according to claim 1, wherein the temperature signal conversion unit is electrically connected with the temperature sensor through a PCB or a connector, a cable.
10. The utility model provides an electric automobile charge-discharge interface temperature monitoring device which characterized in that: the temperature conversion unit converts the actually measured temperature value by using a difference compensation algorithm, and transmits the converted temperature value to the automobile control decision unit, wherein the difference compensation algorithm is to find out a difference rule between the actual temperature and the measured value of the detection position of the temperature sensor through one or more groups of tests and perform difference compensation in a software algorithm according to the rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111261000.3A CN113884202A (en) | 2021-10-28 | 2021-10-28 | Electric automobile charge-discharge interface temperature monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111261000.3A CN113884202A (en) | 2021-10-28 | 2021-10-28 | Electric automobile charge-discharge interface temperature monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113884202A true CN113884202A (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111261000.3A Pending CN113884202A (en) | 2021-10-28 | 2021-10-28 | Electric automobile charge-discharge interface temperature monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113884202A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353872A (en) * | 2011-07-06 | 2012-02-15 | 天津市松正电动汽车技术股份有限公司 | System and method for monitoring temperature of binding posts of electromobile |
| CN105375206A (en) * | 2014-08-08 | 2016-03-02 | F·波尔希名誉工学博士公司 | Charging plug, charging cable and charging method for an electric vehicle |
| CN205483318U (en) * | 2016-01-28 | 2016-08-17 | 山东鲁能智能技术有限公司 | Electric automobile rifle head temperature measuring system that charges |
| CN106785216A (en) * | 2016-12-30 | 2017-05-31 | 深圳市麦澜创新科技有限公司 | A kind of battery temperature control |
| CN107640057A (en) * | 2017-10-30 | 2018-01-30 | 湖州升谱电子科技有限公司 | A kind of electrokinetic cell monitoring device of electric automobile |
| DE102018120057A1 (en) * | 2017-08-17 | 2019-02-21 | Turck Duotec GmbH | TEMPERATURE MEASURING DEVICE |
| DE202015009850U1 (en) * | 2015-04-01 | 2020-11-11 | Müller-Plastik GmbH | Plug for a vehicle charging cable of an electric or hybrid vehicle |
| CN112284556A (en) * | 2020-10-23 | 2021-01-29 | 深圳市新威尔电子有限公司 | Calibration system and method with temperature compensation |
-
2021
- 2021-10-28 CN CN202111261000.3A patent/CN113884202A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353872A (en) * | 2011-07-06 | 2012-02-15 | 天津市松正电动汽车技术股份有限公司 | System and method for monitoring temperature of binding posts of electromobile |
| CN105375206A (en) * | 2014-08-08 | 2016-03-02 | F·波尔希名誉工学博士公司 | Charging plug, charging cable and charging method for an electric vehicle |
| DE202015009850U1 (en) * | 2015-04-01 | 2020-11-11 | Müller-Plastik GmbH | Plug for a vehicle charging cable of an electric or hybrid vehicle |
| CN205483318U (en) * | 2016-01-28 | 2016-08-17 | 山东鲁能智能技术有限公司 | Electric automobile rifle head temperature measuring system that charges |
| CN106785216A (en) * | 2016-12-30 | 2017-05-31 | 深圳市麦澜创新科技有限公司 | A kind of battery temperature control |
| DE102018120057A1 (en) * | 2017-08-17 | 2019-02-21 | Turck Duotec GmbH | TEMPERATURE MEASURING DEVICE |
| CN107640057A (en) * | 2017-10-30 | 2018-01-30 | 湖州升谱电子科技有限公司 | A kind of electrokinetic cell monitoring device of electric automobile |
| CN112284556A (en) * | 2020-10-23 | 2021-01-29 | 深圳市新威尔电子有限公司 | Calibration system and method with temperature compensation |
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