CN107478347B - Charging gun and temperature measuring method and device for contact point of charging gun - Google Patents
Charging gun and temperature measuring method and device for contact point of charging gun Download PDFInfo
- Publication number
- CN107478347B CN107478347B CN201710744160.0A CN201710744160A CN107478347B CN 107478347 B CN107478347 B CN 107478347B CN 201710744160 A CN201710744160 A CN 201710744160A CN 107478347 B CN107478347 B CN 107478347B
- Authority
- CN
- China
- Prior art keywords
- temperature
- contact point
- sampling
- signal
- differential signal
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a temperature measuring method and a device for a charging gun and a contact point thereof, wherein the temperature measuring method comprises the following steps: s10, sampling temperature signals detected by at least two temperature sensors respectively to obtain temperature sampling signals, wherein the at least two temperature sensors are respectively arranged at different positions of the connecting part and are in the same straight line with the position of a contact point to be measured, and the straight line is parallel to the axis of the contact pin; s20, determining the temperature value of the contact point according to the temperature sampling signal. By implementing the technical scheme of the invention, the temperature value at the contact point which can not be directly measured by the insertion part of the contact pin can be obtained by installing at least two temperature sensors at the connection part of the contact pin and processing the temperature value detected by the installed temperature sensors.
Description
Technical Field
The invention relates to the field of electric automobile charging, in particular to a temperature measuring method and device for a charging gun and a contact point of the charging gun.
Background
When the charging current of the electric automobile is relatively large, the charging plug and the cable may be overheated, and the safety of operators is endangered. The charging plug is exposed in a natural environment, the resistance of a contact point of the charging plug and the jack is increased after long-time operation, the contact point heats seriously, and the temperature of the contact point needs to be monitored in order to ensure charging safety. However, the structure of the charging plug limits that the temperature probe cannot be installed at the contact point position, and the temperature probe cannot be installed at other positions to truly reflect the temperature of the contact point. Therefore, special treatment is needed, and the temperature of the connection part of the charging plug and the jack in the charging process can be accurately monitored.
Disclosure of Invention
The invention aims to solve the technical problem that the temperature of the connection part of the charging plug and the jack in the charging process cannot be accurately monitored in the prior art, and provides a temperature measuring method and device for a charging gun and a contact point of the charging gun.
The technical scheme adopted for solving the technical problems is as follows: the temperature measurement method for constructing a contact point of a charging gun comprises a gun body and a contact pin, wherein the contact pin is provided with a plug part arranged on the outer side of the gun body and a connecting part arranged in the gun body, and the temperature measurement method comprises the following steps:
s10, sampling temperature signals detected by at least two temperature sensors respectively to obtain temperature sampling signals, wherein the at least two temperature sensors are respectively arranged at different positions of the connecting part and are positioned on the same straight line with the position of a contact point to be measured, and the straight line is parallel to the axis of the contact pin;
s20, determining the temperature value of the contact point according to the temperature sampling signal.
Preferably, the step S20 includes:
and calculating the temperature of the contact point according to the temperature sampling signals, the positions of the at least two temperature sensors and the position of the contact point.
Preferably, the step S20 includes:
and calculating the temperature of the contact point according to the temperature sampling signal and a preset temperature calculation model, wherein the temperature calculation model is established according to the positions of the at least two temperature sensors and the position of the contact point, and correcting the temperature calculation model according to a plurality of groups of test data.
The invention also constructs a temperature measuring device of a charging gun contact point, the charging gun comprises a gun body and a contact pin, the contact pin is provided with a plug part arranged on the outer side of the gun body and a connecting part arranged in the gun body, and the temperature measuring device comprises:
the at least two temperature sensors are arranged at different positions of the connecting part, the positions of the at least two temperature sensors and the position of the contact point to be measured are on the same straight line, and the straight line is parallel to the axis of the contact pin;
the sampling module is used for sampling the temperature signals detected by the at least two temperature sensors to obtain temperature sampling signals;
and the processing module is used for determining the temperature of the contact point according to the temperature sampling signal.
Preferably, the processing module is configured to calculate the temperature of the contact point according to the temperature sampling signal, the positions of the at least two temperature sensors, and the position of the contact point.
Preferably, the processing module is configured to calculate the temperature of the contact point according to the temperature sampling signal and a preset temperature calculation model, where the temperature calculation model is established according to the positions of the at least two temperature sensors and the position of the contact point, and corrects the temperature calculation model according to multiple sets of test data.
Preferably, the number of the temperature sensors is two, and the second temperature sensor is located between the position of the test point and the position of the first temperature sensor;
the processing module comprises:
a reference power supply for providing a reference voltage;
a first differential circuit for subtracting the reference voltage from the temperature sampling signal sampled from the first temperature sensor to obtain a first differential signal;
a second differential circuit for subtracting the reference voltage from the temperature sampling signal sampled from the second temperature sensor to obtain a second differential signal;
the subtracting circuit is used for subtracting the second differential signal from the first differential signal and multiplying the second differential signal by a proportionality coefficient to obtain a first intermediate signal, wherein the proportionality coefficient is related to the positions of the first temperature sensor, the second temperature sensor and the contact point;
an adder circuit configured to superimpose the first intermediate signal and the first differential signal to obtain a second intermediate signal;
and the singlechip is used for processing the second intermediate signal to acquire the temperature value of the contact point.
Preferably, the sampling module is a bridge sampling module.
The invention also constructs a charging gun which comprises a gun body and a contact pin, wherein the contact pin is provided with a plug part arranged on the outer side of the gun body and a connecting part arranged in the gun body.
By implementing the technical scheme of the invention, the temperature value at the contact point which can not be directly measured by the insertion part of the contact pin can be obtained by installing at least two temperature sensors at the connection part of the contact pin and processing the temperature value detected by the installed temperature sensors, and then the charging current can be limited or protected by utilizing the calculated temperature value, so that the accident in the charging process is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the accompanying drawings:
FIG. 1 is a flow chart of a first embodiment of a method for measuring temperature at a contact point of a charging gun according to the present invention;
FIG. 2 is a schematic view of a charging gun according to a first embodiment of the present invention;
fig. 3 is a circuit diagram of a first embodiment of a temperature measuring device of the contact point of the charging gun of the present invention.
Detailed Description
Fig. 1 is a flowchart of an embodiment of a temperature measurement method of a contact point of a charging gun, firstly, it is explained that the charging gun comprises a gun body and a contact pin, and the contact pin is provided with a plug part arranged on the outer side of the gun body and a connecting part arranged in the gun body, wherein the connecting part is connected with a cable of a charging pile, and the plug part is inserted into a socket on an electric automobile to form a contact point when the electric automobile is charged. By the method of this embodiment, temperature measurement can be performed on the contact point, specifically, the temperature measurement method of the contact point of the charging gun of this embodiment includes the steps of:
s10, sampling temperature signals detected by at least two temperature sensors respectively to obtain temperature sampling signals, wherein the at least two temperature sensors are respectively arranged at different positions of the connecting part and are positioned on the same straight line with the position of a contact point to be measured, the straight line is parallel to the axis of the contact pin, and in the step, the temperature sensors can adopt PT1000 or other temperature measuring elements;
s20, determining the temperature value of the contact point according to the temperature sampling signal.
In the technical scheme of the embodiment, firstly, the connecting part of the contact pin is arranged in the gun body and is used for connecting the cable, so that the temperature sensor can be installed on the connecting part, and the plugging of the plug part is not influenced after the temperature sensor is installed. In this embodiment, at least two temperature sensors are disposed at the connection portion of the pin, and the positions of the temperature sensors and the contact point are on the same straight line, and the straight line is parallel to the axis of the pin, so after the structure and the material of the pin are determined, the thermal resistances between the positions of the plurality of temperature sensors and the positions of the contact point satisfy a certain relationship, and therefore, the temperature value at the contact point can be determined according to the temperature values detected by the plurality of temperature sensors.
In a specific embodiment, step S20 includes:
and calculating the temperature of the contact point according to the temperature sampling signals, the positions of the at least two temperature sensors and the position of the contact point.
In another embodiment, step S20 includes:
and calculating the temperature of the contact point according to the temperature sampling signal and a preset temperature calculation model, wherein the temperature calculation model is established according to the positions of the at least two temperature sensors and the position of the contact point, and correcting the temperature calculation model according to a plurality of groups of test data.
In this embodiment, when calculating the temperature of the contact point, the temperature calculation model is calculated according to the preset temperature calculation model, and the temperature calculation model is further corrected according to the plurality of sets of test data after the temperature calculation model is established, so that the calculated temperature value of the contact point is more accurate and has smaller error than the previous embodiment.
Fig. 2 is a schematic structural diagram of a charging gun according to a first embodiment of the present invention, where the charging gun includes a gun body 20, a pin 10 and a temperature testing device (not shown), the pin 10 has a plug portion 12 disposed outside the gun body 20 and a connection portion 11 disposed in the gun body 20, and the connection portion 11 is connected to a cable of a charging post. The plug portion 12 is inserted into a socket on the electric vehicle at the time of charging to form a contact point, for example, the temperature of the contact point to be measured is the temperature at the position a.
In addition, the temperature measuring device comprises two temperature sensors, a sampling module and a processing module, wherein the two temperature sensors are respectively arranged at the position B, C of the connecting part 11, and the installation position B, C of the two temperature sensors and the position A of the contact point to be measured are on the same straight line, and the straight line is parallel to the axis of the contact pin. The sampling module is used for sampling temperature signals detected by the two temperature sensors so as to obtain respective temperature sampling signals. The sampling module is preferably a bridge sampling module. The processing module is used for determining the temperature of the contact point, namely the temperature at the position A of the pin according to the temperature sampling signal.
In some embodiments, the processing module includes only a processor or controller with data operation processing function, i.e. the temperature sampling signal output by the sampling module is directly sent into the processing module, and the processing module includes but is not limited to a microprocessor, a microcontroller, a digital signal processor, a microcomputer, a central processing unit, a field programmable gate array, a programmable logic device, and the like. The temperature of the contact point is then determined by the processing module from the temperature sampling signal. Specifically, in one embodiment, the processing module is configured to calculate the temperature of the contact point according to the temperature sampling signals of the two temperature sensors, the positions of the two temperature sensors, and the position of the contact point. In another embodiment, the processing module is configured to calculate the temperature of the contact point according to the temperature sampling signal and a preset temperature calculation model, where the temperature calculation model is established according to the positions of the two temperature sensors and the position of the contact point, and correct the temperature calculation model according to multiple sets of test data.
In other embodiments, the processing module is comprised of logic circuitry in conjunction with a processor or controller. Specifically, in one embodiment, the two temperature sensors are a first temperature sensor and a second temperature sensor, respectively, the first temperature sensor has a resistance RT1, the second temperature sensor has a resistance RT2, and the second temperature sensor is located between the position of the contact point and the position of the first temperature sensor, and in conjunction with fig. 2, the first temperature sensor is installed at position C, the second temperature sensor is installed at position B, and assuming that the thermal resistance between ACs is RT1, and the thermal resistance between BC is RT2. The processing module comprises a reference power supply, a first differential circuit, a second differential circuit, a subtracting circuit, an adding circuit and a singlechip. The first differential circuit is used for subtracting the reference voltage from a temperature sampling signal corresponding to the first temperature sensor so as to obtain a first differential signal; the second differential circuit is used for subtracting the reference voltage from the temperature sampling signal corresponding to the second temperature sensor so as to obtain a second differential signal; the subtracting circuit is used for subtracting the second differential signal from the first differential signal and multiplying the second differential signal by a proportionality coefficient to obtain a first intermediate signal, wherein the proportionality coefficient is related to the positions of the first temperature sensor, the second temperature sensor and the contact point; the adding circuit is used for superposing the first intermediate signal and the first differential signal to obtain a second intermediate signal; the singlechip is used for processing the second intermediate signal to acquire the temperature value of the contact point. The specific circuitry of the processing module is described below in conjunction with fig. 3:
the reference power supply comprises resistors R1, R2 and R3 and a zener diode ZD1, one end of the resistor R1 is connected with a power supply (VCC), the other end of the resistor R1 is connected with the cathode of the zener diode ZD1, the anode of the zener diode ZD1 is grounded, and the resistors R2 and R3 are connected between the cathode of the zener diode ZD1 and the ground in series.
The sampling module is a bridge type sampling module, after a resistor R4 is connected with a resistor RT1 in series, one end of the resistor R4 is connected with the cathode of a voltage stabilizing diode ZD1, and the other end of the resistor R4 is grounded. After the resistor R5 is connected in series with the resistor RT2, one end is connected with the cathode of the zener diode ZD1, and the other end is grounded.
The first differential circuit comprises an operational amplifier U1, resistors R6, R7, R8 and R12, wherein the inverting input end of the operational amplifier U1 is connected with the connection point of the resistors R2 and R3 through the resistor R6, the non-inverting input end of the operational amplifier U1 is connected with the connection point of the resistor R4 and the resistor RT1 through the resistor R7, the non-inverting input end of the operational amplifier U1 is grounded through the resistor R8, and the resistor R12 is connected between the output end and the inverting input end of the operational amplifier U1. When the resistances of the resistors R12, R6, and R7 are equal, the op-amp U1 and the resistors R6, R7, R8, and R12 form a subtractor, and the sampled temperature sampling signal of the first temperature sensor is subtracted from the reference voltage, thereby outputting a first differential signal. Similarly, the second differential circuit comprises an operational amplifier U2, resistors R9, R10, R11 and R13, wherein the inverting input end of the operational amplifier U2 is connected with the connection point of the resistors R2 and R3 through the resistor R9, the non-inverting input end of the operational amplifier U2 is connected with the connection point of the resistor R5 and the resistor RT2 through the resistor R10, the non-inverting input end of the operational amplifier U2 is grounded through the resistor R11, and the resistor R13 is connected between the output end and the inverting input end of the operational amplifier U2. When the resistances of the resistors R13, R9, and R10 are equal, the op-amp U2 and the resistors R9, R10, R11, and R13 form a subtractor, and the sampled temperature sampling signal of the second temperature sensor is subtracted from the reference voltage, thereby outputting a second differential signal.
The subtracting circuit comprises an operational amplifier U3, resistors R14, R15 and R16, wherein the inverting input end of the operational amplifier U3 is connected with the output end of the operational amplifier U1 through the resistor R14, the non-inverting input end of the operational amplifier U3 is connected with the output end of the operational amplifier U2 through the resistor R15, and the resistor R16 is connected between the output end and the inverting input end of the operational amplifier U3. When the resistances of the resistors R14 and R15 are equal and different from the resistance of the resistor R16, the op-amp U3 and the resistors R14, R15, R16 form a subtractor, and the second differential signal is subtracted from the first differential signal and multiplied by a scaling factor K (R16/R14), thereby outputting a first intermediate signal. It should be noted that, when R14, R15, and R16 are selected, reference should be made to the positional relationship between the first temperature sensor, the second temperature sensor, and the contact point.
The adding circuit comprises an operational amplifier U4, resistors R17, R18 and R19, wherein the non-inverting input end of the operational amplifier U4 is grounded, the inverting input end of the operational amplifier U4 is connected with the output end of the operational amplifier U3 through the resistor R18, the resistor R17 is connected between the inverting input end of the operational amplifier U4 and the output end of the operational amplifier U1, and the resistor R19 is connected between the output end of the operational amplifier U4 and the inverting input end. When the resistances of the resistors R19, R17, R18 are equal, the op-amp U4, the resistors R17, R18, R19 form an adder, and the first intermediate signal is added to the first differential signal to output a second intermediate signal.
The singlechip (not shown) is connected with the output end of the operational amplifier U4 and is used for processing the input second intermediate signal into a temperature signal, wherein the temperature signal is the temperature at the contact point A.
Finally, regarding the proportionality coefficient K, when the material of the pin of the charging gun is fixed and is cylindrical or rectangular, the value of K is desirably the ratio of the length between BC and the length between AC. Of course, in practice, to reduce errors, the K value (initial value) may be calibrated using multiple sets of test data prior to use of the charging gun. In addition, the K value can be obtained by a mode of fitting a plurality of groups of test data.
In addition, the above embodiments are described by taking two temperature sensors installed at the connection portion of the pin as an example, and it should be understood that in other embodiments, a greater number of temperature sensors may be provided, then the temperature of the contact point is calculated according to the temperature values detected by each two temperature sensors, and finally fusion calculation is performed on all the obtained temperature values.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any such modifications, equivalents, and improvements that fall within the spirit and principles of the present invention are intended to be covered by the following claims.
Claims (7)
1. The utility model provides a temperature measurement method of rifle contact point charges, the rifle that charges includes rifle body and contact pin, just the contact pin has the plug that sets up in the rifle body outside and set up the connecting portion in the rifle body, its characterized in that, temperature measurement method includes the following steps:
s10, sampling temperature signals detected by at least two temperature sensors respectively to obtain temperature sampling signals, wherein the at least two temperature sensors are respectively arranged at different positions of the connecting part and are positioned on the same straight line with the position of a contact point to be measured, and the straight line is parallel to the axis of the contact pin;
s20, determining a temperature value of the contact point according to the temperature sampling signal;
moreover, the number of the temperature sensors is two, and the second temperature sensor is positioned between the position of the contact point and the position of the first temperature sensor;
step S20 includes:
subtracting the reference voltage from the temperature sampling signal sampled from the first temperature sensor to obtain a first differential signal;
subtracting the temperature sampling signal sampled from the second temperature sensor from the reference voltage to obtain a second differential signal;
subtracting the first differential signal from the second differential signal, and multiplying the first differential signal by a scaling factor to obtain a first intermediate signal, wherein the scaling factor is related to the positions of the first temperature sensor, the second temperature sensor and the contact point;
superposing the first intermediate signal and the first differential signal to obtain a second intermediate signal;
and processing the second intermediate signal to obtain a temperature value of the contact point.
2. The method for measuring the temperature of the contact point of the charging gun according to claim 1, wherein the step S20 includes:
and calculating the temperature of the contact point according to the temperature sampling signals, the positions of the at least two temperature sensors and the position of the contact point.
3. The method for measuring the temperature of the contact point of the charging gun according to claim 1, wherein the step S20 includes:
and calculating the temperature of the contact point according to the temperature sampling signal and a preset temperature calculation model, wherein the temperature calculation model is established according to the positions of the at least two temperature sensors and the position of the contact point, and correcting the temperature calculation model according to a plurality of groups of test data.
4. The utility model provides a temperature measuring device of rifle contact point charges, the rifle that charges includes the rifle body and contact pin, just the contact pin has the setting be in the plug and the setting of the rifle body outside are in the internal connecting portion of rifle, its characterized in that includes:
the at least two temperature sensors are arranged at different positions of the connecting part, the positions of the at least two temperature sensors and the position of the contact point to be measured are on the same straight line, and the straight line is parallel to the axis of the contact pin;
the sampling module is used for sampling the temperature signals detected by the at least two temperature sensors to obtain temperature sampling signals;
the processing module is used for calculating the temperature of the contact point according to the temperature sampling signals, the positions of the at least two temperature sensors and the position of the contact point;
the number of the temperature sensors is two, and the second temperature sensor is positioned between the position of the contact point and the position of the first temperature sensor;
the processing module comprises:
a reference power supply for providing a reference voltage;
a first differential circuit for subtracting the reference voltage from the temperature sampling signal sampled from the first temperature sensor to obtain a first differential signal;
a second differential circuit for subtracting the reference voltage from the temperature sampling signal sampled from the second temperature sensor to obtain a second differential signal;
the subtracting circuit is used for subtracting the second differential signal from the first differential signal and multiplying the second differential signal by a proportionality coefficient to obtain a first intermediate signal, wherein the proportionality coefficient is related to the positions of the first temperature sensor, the second temperature sensor and the contact point;
an adder circuit configured to superimpose the first intermediate signal and the first differential signal to obtain a second intermediate signal;
and the singlechip is used for processing the second intermediate signal to acquire the temperature value of the contact point.
5. The device for measuring the temperature of the contact point of a charging gun according to claim 4, wherein,
the processing module is used for calculating the temperature of the contact point according to the temperature sampling signal and a preset temperature calculation model, wherein the temperature calculation model is established according to the positions of the at least two temperature sensors and the position of the contact point, and the temperature calculation model is corrected according to multiple groups of test data.
6. The device of claim 4, wherein the sampling module is a bridge sampling module.
7. A charging gun comprising a gun body and a contact pin, wherein the contact pin is provided with a plug part arranged on the outer side of the gun body and a connecting part arranged in the gun body, and the charging gun is characterized by further comprising the temperature measuring device of any one of claims 4-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710744160.0A CN107478347B (en) | 2017-08-25 | 2017-08-25 | Charging gun and temperature measuring method and device for contact point of charging gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710744160.0A CN107478347B (en) | 2017-08-25 | 2017-08-25 | Charging gun and temperature measuring method and device for contact point of charging gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107478347A CN107478347A (en) | 2017-12-15 |
| CN107478347B true CN107478347B (en) | 2023-08-01 |
Family
ID=60602651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710744160.0A Active CN107478347B (en) | 2017-08-25 | 2017-08-25 | Charging gun and temperature measuring method and device for contact point of charging gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107478347B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7307007B2 (en) * | 2020-02-14 | 2023-07-11 | トヨタ自動車株式会社 | electric car |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212407A (en) * | 2006-02-13 | 2007-08-23 | Kanazawa Univ | Non-heated deep body thermometer and deep body temperature measuring device using the same |
| KR20140094095A (en) * | 2013-01-21 | 2014-07-30 | 삼성전자주식회사 | Temperature controlled oscillator and temperature sensor including the same |
| JP6337416B2 (en) * | 2013-03-12 | 2018-06-06 | セイコーエプソン株式会社 | Temperature measuring device |
| JP6291930B2 (en) * | 2014-03-14 | 2018-03-14 | Tdk株式会社 | Sensor circuit |
| KR101587357B1 (en) * | 2014-09-01 | 2016-01-20 | 엘에스산전 주식회사 | Recharging device and recharging method for vehicle |
| CN106289563B (en) * | 2016-07-19 | 2019-09-03 | 广州视源电子科技股份有限公司 | Temperature detection method, system and device |
| CN106207651A (en) * | 2016-08-25 | 2016-12-07 | 江苏法雷德新能源科技有限公司 | A kind of electric automobile intelligent AC charging gun |
| CN205890592U (en) * | 2016-10-11 | 2017-01-18 | 特瓦特能源科技有限公司 | Novel direct current rifle that charges |
| CN106712212A (en) * | 2017-02-22 | 2017-05-24 | 朱小平 | A charging gun for safer, reliable and effective charging |
| CN107035176B (en) * | 2017-06-08 | 2022-08-23 | 青岛特来电新能源科技有限公司 | Charging device and stereo garage |
| CN207263326U (en) * | 2017-08-25 | 2018-04-20 | 深圳奥特迅电力设备股份有限公司 | The temperature measuring equipment of charging gun and its contact point |
-
2017
- 2017-08-25 CN CN201710744160.0A patent/CN107478347B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107478347A (en) | 2017-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101943712B (en) | Resistance bridge architecture and method | |
| CN106997005B (en) | High-precision thermal control loop resistance value testing method | |
| US9035619B2 (en) | Battery cell temperature detection | |
| ES2705433T3 (en) | Method for temperature drift compensation of temperature measurement device using thermocouple | |
| CN102346242B (en) | The calibration of conductivity measurement system | |
| CN105675081B (en) | Oil mass detection method | |
| CN104458121B (en) | Silicon pressure sensor temperature excursion compensating circuit and circuit establishing method | |
| CN104535214A (en) | High-precision temperature collecting circuit based on NTC temperature sensors and method | |
| CN102829888A (en) | Method for eliminating three-wire heating resistor measurement errors | |
| CN103675461B (en) | Based on the resistance measurement method of adjustable current source | |
| CN102778631A (en) | Method for detecting and accurately positioning leakage of a sensing cable based on partial pressure compensation | |
| CN101943713A (en) | Resistance bridge and method are looked in built in self testing | |
| CN107478347B (en) | Charging gun and temperature measuring method and device for contact point of charging gun | |
| CN113156192A (en) | Current sampling device of high-voltage system of new energy vehicle | |
| JPH04248472A (en) | Method of measuring resistance value | |
| CN110954265A (en) | A new type of hot cathode ionization vacuum gauge electrical parameter calibration device | |
| CN207263326U (en) | The temperature measuring equipment of charging gun and its contact point | |
| CN202870025U (en) | Device for testing corrosion degree of steel cable | |
| JP6767731B2 (en) | Overheat detection system Systems and methods for event sites | |
| EP3287752B1 (en) | Low power operational methodology for a flow sensor | |
| Scott et al. | Vehicle lead-acid battery state-of-charge meter | |
| KR20140066439A (en) | Method for improve the accuracy of vehicle sensors using reference voltage compensation and device thereof | |
| CN114518185A (en) | Temperature calibration method, system, computer and medium for thermal resistance temperature sensor | |
| CN204556137U (en) | A kind of calibrating device for surveying instrument | |
| CN112714873B (en) | Battery sensor for measuring current independent of temperature using current divider |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |