CN108649668B - Temperature control system and temperature control method of electric automobile charging device - Google Patents
Temperature control system and temperature control method of electric automobile charging device Download PDFInfo
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- CN108649668B CN108649668B CN201810876695.8A CN201810876695A CN108649668B CN 108649668 B CN108649668 B CN 108649668B CN 201810876695 A CN201810876695 A CN 201810876695A CN 108649668 B CN108649668 B CN 108649668B
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 101000663006 Homo sapiens Poly [ADP-ribose] polymerase tankyrase-1 Proteins 0.000 claims description 2
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Classifications
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- H02J7/0091—
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention belongs to the technical field of new energy electric automobile charging, relates to an electric automobile charging device, and particularly relates to a temperature control system and a temperature control method of the electric automobile charging device. The temperature control system of the electric automobile charging device comprises a charging control unit and a temperature acquisition module, wherein a temperature control circuit is arranged in the charging control unit; the temperature acquisition module is arranged in the power supply three-eye plug and is used for measuring the real-time temperature of the plug; the control circuit is connected with the temperature acquisition module, the temperature acquisition module transmits a temperature signal measured in real time to the temperature control circuit, the acquired signal is converted into a voltage signal, partial pressure following processing is carried out, and the control circuit completes control processing of the charging process. The system has reasonable design, accurate and practical method, meets the requirements of high-efficiency, rapid and safe charging at present, and overcomes the defect that no temperature control charging exists at the present stage.
Description
Technical Field
The invention belongs to the technical field of new energy electric automobile charging, relates to an electric automobile charging device, and particularly relates to a temperature control system and a temperature control method of the electric automobile charging device.
Background
The electric automobile charging mode includes alternating current charging and direct current charging. In alternating current charging, the household power supply socket is used for supplying power for most purposes. The power supply required to be powered in the charging process is generally 220V/16A or 220V/10A, and the battery capacity of the electric automobile is 3.3KVA or more, so that the charging socket has the characteristics of long charging time (generally 8-10 hours) and high charging current when being used for charging.
The standard for implementation of household power supply sockets is GB 2099.1. The three-hole charging socket in the standard range adopts a reed structure, and the reed is easy to deform due to repeated plugging, so that the contact resistance at the plugging position of the plug is increased, the temperature rise is too fast, and the ablation risk is caused. This is an inherent disadvantage of such connectors and is temporarily unavoidable.
The household power supply connector is utilized to charge the electric automobile, which is an explosive demand of the market in recent years, and in the face of the practical characteristics of large charging current and long charging time, on the premise that the standard state of the three-eye power supply connector cannot be changed temporarily, in order to enable the three-eye power supply connector to meet the strict safety charging standard, measures must be taken in a circuit to enable the charging equipment to be charged safely in various environments. We propose to monitor the temperature of the plugging location during charging and make the necessary policy control. To ensure the safety of the charging process.
Disclosure of Invention
The invention aims to solve the problems, and provides a temperature control system and a temperature control method of an electric vehicle charging device, which can measure the temperature of a charging plug through a temperature sensor so as to control the current in the charging process, realize real-time temperature detection and control and ensure quick and safe charging.
The invention is realized by adopting the following technical scheme:
the temperature control system of the electric automobile charging device comprises a charging control unit and a temperature acquisition module, wherein a temperature control circuit is arranged in the charging control unit; the temperature acquisition module is arranged in the power supply three-eye plug and is used for measuring the real-time temperature of the plug; the control circuit is connected with the temperature acquisition module, the temperature acquisition module transmits a temperature signal measured in real time to the temperature control circuit, the acquired signal is converted into a voltage signal, partial pressure following processing is carried out, and the control circuit completes control processing of the charging process.
The control method of the temperature control system of the electric automobile charging device comprises the following steps:
(1) The temperature control module in the control circuit amplifies and converts the temperature signal transmitted by the temperature acquisition module, and charges in a mode of equal current alternation or current variation;
the charging steps of the current alternating equal amount are as follows:
(2) The temperature acquisition module measures the internal temperature of the three-eye plug in real time and transmits the measured value to the temperature control module in the control circuit;
(2-1) the charging device outputs a guide pulse signal to the whole vehicle alternating current charging system through the control circuit, the whole vehicle charging system feeds back the success of communication, and the charging device is connected with a power supply loop and charges with rated current;
(2-2) when the real-time temperature of the three-eye plug is greater than or equal to the upper limit temperature threshold set by the charging device, a control circuit in the charging device cuts off a power supply loop, and charging is stopped; and performing 2-3-1 or 2-3-2 steps;
(2-3-1) when the real-time temperature of the three-eye plug is reduced below a lower limit threshold set by the charging device, a control circuit in the charging device controls a power supply loop to be connected, and charging is continued with rated current;
(2-3-2) after stopping charging, when the cooling time exceeds the time set by the charging device, a control circuit in the charging device controls to switch on a power supply circuit and continues to charge at rated current;
(2-4) when the repeated cycle of the charging process of 2-2, 2-3-1 or 2-2, 2-3-2 occurs and the set cycle starting and disconnecting times are exceeded, the control circuit controls the charging device to stop charging permanently unless the three-eye plug is plugged in and plugged out to supply power again;
the charging steps of the current transformer are as follows:
(2) The temperature acquisition module measures the internal temperature of the three-eye plug in real time and transmits the measured value to the temperature control module in the control circuit;
(2-1) outputting a minimum guide pulse signal specified by a standard to a whole vehicle alternating current charging system by the charging device through the control circuit, and if the feedback communication of the whole vehicle charging system is successful, switching on a power supply loop by the charging device and charging by using a minimum current specified by the standard;
(2-2) when the real-time temperature of the three-eye plug is greater than or equal to the upper limit temperature threshold set by the charging device, the charging device maintains minimum current charging; when the temperature is still increased and exceeds the limit temperature threshold set by the charging device, a control circuit in the charging device cuts off a power supply loop and stops charging;
(2-3) when the real-time temperature of the three-eye plug is within a specified time and does not exceed a set upper limit temperature threshold value, a control circuit in the charging device increases the duty ratio of the guide pulse signal and transmits the guide pulse signal to the whole vehicle alternating current charging system, and the whole vehicle charging system synchronously increases the charging current after receiving the guide pulse signal with the increased duty ratio;
(2-4) repeating the action of 2-3 when the real-time temperature of the three-eye plug is still not more than the set upper limit temperature threshold value within the set time after the completion of 2-3, and gradually increasing the duty ratio of the guide pulse signal until the current rises to the set rated current;
(2-5) when the three-eye plug real-time temperature exceeds the set upper limit temperature threshold value within the set time after the step 2-4 is finished, the charging device keeps outputting a corresponding pulse signal, and the whole vehicle charging system charges according to a corresponding current;
(2-6) when the temperature of the three-eye plug is continuously increased to the limit temperature value set by the charging device after the step 2-5 is carried out, the control circuit controls the charging device to stop charging permanently unless the three-eye plug is plugged in or out to supply power again;
(3) When the charging amount is full, the control circuit controls the charging device to stop charging.
The alternating equal-amount charging refers to that in the charging process, current is alternately output along with the temperature, and the amplitude of the current is unchanged.
The variable charging means that the charging is carried out according to the minimum current in the initial stage of the charging process, and gradually rises along with the change of the temperature within the allowable temperature range until the rated value is reached.
The rated current is 5-15A, preferably 8A-13A, and more preferably 8A or 13A.
The system has reasonable design, accurate and practical method, meets the requirements of high-efficiency, rapid and safe charging at present, and overcomes the defect that no temperature control charging exists at the present stage. The event of overhigh temperature rise and even burning caused by poor plugging of the power supply connection position in the long-time heavy-current charging process is avoided.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a control circuit diagram of a temperature control system of the present invention;
FIG. 2 is a schematic block diagram of a temperature control system of the present invention;
FIG. 3 is a flow chart of a control method of the temperature control system (charging mode is current alternating equal amount);
FIG. 4 is a flow chart of a control method (charging mode is current rating) of the temperature control system of the present invention.
FIG. 5 is a graph showing characteristics between charging temperature and current (charging mode is current alternating equal amount) during charging according to the control method of the temperature control system of the present invention;
FIG. 6 is a graph showing characteristics between charging temperature and current (charging mode is electrorheological rate) when the control method of the temperature control system of the present invention is charging in a normal state;
FIG. 7 is a graph showing characteristics between charging temperature and current (charging mode is electrorheological rate) of the control method of the temperature control system of the present invention when the charging temperature is between the upper limit and the limit;
FIG. 8 is a graph showing the characteristics between the charging temperature and the current (the charging mode is the current rating) when the charging temperature is over the limit.
Detailed Description
The system and method of the present invention will be described below with reference to fig. 1-8, example 1 and example 2.
Referring to fig. 1 and 2, the temperature control system of the electric vehicle charging device comprises a charging control unit and a temperature acquisition module, wherein a control circuit is arranged in the charging control unit; the temperature acquisition module is arranged in the power supply three-eye plug and is used for measuring the real-time temperature of the plug; the control circuit is connected with the temperature acquisition module, the temperature acquisition module transmits a temperature signal measured in real time to the temperature control module in the control circuit, the acquired signal is converted into a voltage signal, the voltage signal is subjected to follow-up processing, and the control circuit finishes the control processing of the charging process.
The temperature acquisition module adopts a platinum resistor (PT resistor) or an NTC/PTC temperature sensor.
The platinum resistor (PT resistor) and NTC/PTC temperature sensor are commercially available.
The platinum resistance is preferably PT100 resistance.
The NTC temperature sensor is a negative temperature sensor, the higher the temperature of which, the lower the resistance.
The PTC temperature sensor is a positive temperature sensor, and the higher the temperature thereof, the higher the resistance thereof.
FIG. 1 is a control circuit diagram of a temperature control system employed in the present embodiment, the control circuit being formed by connecting an EMI immunity circuit and a voltage division follower circuit; one end of the EMI immunity circuit is in signal connection with the temperature acquisition module, the other end of the voltage division follower circuit is in signal connection with the single chip microcomputer, and when the temperature acquisition module is used, the temperature acquisition module sequentially processes the acquired temperature signals through the EMI immunity circuit and the voltage division follower circuit and then sends the temperature signals to the single chip microcomputer for comprehensive processing.
Wherein the EMI immunity circuit, i.e., EMI (electromagnetic interference) protection circuit, is capable of reducing the performance impact of EMI on the vehicle module; the voltage dividing and following circuit can play a role in buffering, isolating and improving the carrying capacity.
The EMI immunity circuit is composed of an inductor ML1, an inductor ML2 and an inductor ML3 which are connected in parallel, a capacitor MC13 is connected between the lines at the front ends of the inductor ML1 and the inductor ML3, a capacitor MC15 is connected between the inductor ML2 and the inductor ML3, and input ends of the inductor ML1, the inductor ML2 and the inductor ML3 are respectively connected with a TIN1 end, a TIN2 end and a GNDT end on the temperature acquisition module; by providing an EMI immunity circuit, electromagnetic interference in the circuit can be effectively eliminated.
The voltage division follower circuit comprises a voltage follower MU3A and a voltage follower MU3B; the inductor ML1 and the inductor ML2 are correspondingly connected with the anodes of the voltage follower MU3A and the voltage follower MU3B respectively; a line is arranged between the inductor ML2 and the voltage follower MU3B and is connected with the inductor ML3, and a capacitor MC17 is arranged on the line; a line is arranged between the inductor ML1 and the voltage follower MU3A and is connected with the inductor ML3, and a capacitor MC16 is arranged on the line; capacitor MC16 is connected in parallel with capacitor MC17; a resistor MR13 and a resistor MR14 are also arranged on the voltage division following circuit in parallel, one end of the resistor MR13 is connected between the inductor ML1 and the voltage follower MU3A, and one end of the resistor MR14 is connected between the inductor ML2 and the voltage follower MU3B; a circuit is arranged after the resistor MR13 and the resistor MR14 are connected in parallel, a capacitor MC12 is arranged at the tail end of the circuit, and a grounding end GNDC is respectively arranged at the front end and the rear end of the capacitor MC 12; the rear end of the voltage follower MU3A is connected in series with a resistor MR11 and an interface TP22, a line connection capacitor MC14 is arranged between the resistor MR11 and the interface TP22, and the tail end of the capacitor MC14 is provided with a grounding end GNDC; similarly, a resistor MR15 and an interface TP24 are connected in series with the rear end of the voltage follower MU3B, a line connection capacitor MC18 is arranged between the resistor MR15 and the interface TP24, and the tail end of the capacitor MC18 is provided with a grounding end GNDC; the interface TP22 and the interface TP24 are used for data connection with the singlechip. The collected temperature signals can be effectively isolated and buffered by the voltage division follower circuit, and the signal is ensured not to be distorted.
The singlechip is any one of STM32, NXP (Freescale) or Microchip series singlechips.
The inductor ML1, the inductor ML2, the inductor ML3, the capacitor MC13, the capacitor MC15, the capacitor MC17, the capacitor MC12, the capacitor MC14, the capacitor MC18, the resistor MR13, the resistor MR14, the resistor MR11, the resistor MR15, the voltage follower MU3A and the voltage follower MU3B are all commercially available electronic components.
The control method of the temperature control system of the electric vehicle charging device comprises the following steps:
example 1 (see FIGS. 1-3, 5)
(1) The temperature control module in the control circuit amplifies and converts the temperature signal transmitted by the temperature acquisition module, and charges in a mode of current alternation and the like;
(2) The temperature acquisition module measures the internal temperature of the three-eye plug in real time and transmits the measured value to the temperature control module in the control circuit;
(2-1) after the charging device is powered on, outputting a guide pulse signal to the whole vehicle alternating current charging system through the control circuit, wherein the whole vehicle charging system feeds back the successful communication, and the charging device is powered on to a power supply loop and charges with rated current;
(2-2) when the real-time temperature of the three-eye plug is greater than or equal to the upper limit temperature threshold set by the charging device, a control circuit in the charging device cuts off a power supply loop, and charging is stopped; and performing 2-3-1 or 2-3-2 steps;
(2-3-1) when the real-time temperature of the three-eye plug is reduced below a lower limit threshold set by the charging device, a control circuit in the charging device controls a power supply loop to be connected, and charging is continued with rated current;
(2-3-2) after stopping charging, when the cooling time exceeds the time set by the charging device, a control circuit in the charging device controls to switch on a power supply circuit and continues to charge at rated current;
(2-4) when the repeated cycle of the charging process of 2-2, 2-3-1 or 2-2, 2-3-2 occurs and the set cycle starting and disconnecting times are exceeded, the control circuit controls the charging device to stop charging permanently unless the three-eye plug is plugged in and plugged out to supply power again;
(3) When the charge amount is full, the control circuit controls the charging device to stop charging.
The rated current described in example 1 is 8A or 13A.
The upper limit temperature described in example 1 is 90 ℃.
Example 2 (see FIGS. 1, 2, 4, 6-8)
(1) 1, a temperature acquisition module in a control circuit amplifies and converts a temperature signal transmitted by the temperature acquisition module, and charges in a current balance mode;
(2) 2, the temperature acquisition module measures the internal temperature of the three-hole plug in real time and transmits the measured value to the temperature control module in the control circuit;
(2-1) outputting a minimum guide pulse signal specified by a standard to a whole vehicle alternating current charging system by the charging device through the control circuit, and if the feedback communication of the whole vehicle charging system is successful, switching on a power supply loop by the charging device and charging by using a minimum current specified by the standard;
(2-2) when the real-time temperature of the three-eye plug is greater than or equal to the upper limit temperature threshold set by the charging device, the charging device maintains minimum current charging; when the temperature is still increased and exceeds the limit temperature threshold set by the charging device, a control circuit in the charging device cuts off a power supply loop and stops charging;
(2-3) when the real-time temperature of the three-eye plug is within a specified time and does not exceed a set upper limit temperature threshold value, a control circuit in the charging device increases the duty ratio of the guide pulse signal and transmits the guide pulse signal to the whole vehicle alternating current charging system, and the whole vehicle charging system synchronously increases the charging current after receiving the guide pulse signal with the increased duty ratio;
(2-4) repeating the action of 2-3 when the real-time temperature of the three-eye plug is still not more than the set upper limit temperature threshold value within the set time after the completion of 2-3, and gradually increasing the duty ratio of the guide pulse signal until the current rises to the set rated current;
(2-5) when the three-eye plug real-time temperature exceeds the set upper limit temperature threshold value within the set time after the step 2-4 is finished, the charging device keeps outputting a corresponding pulse signal, and the whole vehicle charging system charges according to a corresponding current;
(2-6) when the temperature of the three-eye plug is continuously increased to the limit temperature value set by the charging device after the step 2-5 is carried out, the control circuit controls the charging device to stop charging permanently unless the three-eye plug is plugged in or out to supply power again;
(3) When the charging amount is full, the control circuit controls the charging device to stop charging.
The rated current described in example 2 is 8A or 13A.
The limiting temperature described in example 2 was 90 ℃.
Claims (3)
1. The utility model provides a temperature control system of electric automobile charging device which characterized in that: the device comprises a charging control unit and a temperature acquisition module, wherein a control circuit is arranged in the charging control unit; the temperature acquisition module is arranged in the power supply three-eye plug and is used for measuring the real-time temperature of the plug; the control circuit is connected with the temperature acquisition module, the temperature acquisition module transmits a temperature signal measured in real time to the temperature acquisition module in the control circuit, the acquired signal is converted into a voltage signal, the voltage signal is subjected to follow-up processing, and the control circuit finishes the control processing of the charging process;
the control circuit is formed by connecting an EMI immunity circuit and a voltage division follower circuit; one end of the EMI immunity circuit is in signal connection with the temperature acquisition module, the other end of the voltage division follower circuit is in signal connection with the singlechip, and when the temperature acquisition module is used, the temperature acquisition module sequentially processes the acquired temperature signals through the EMI immunity circuit and the voltage division follower circuit and then sends the temperature signals to the singlechip for comprehensive processing;
the EMI immunity circuit is an EMI protection circuit, and the circuit can reduce the influence of the EMI on the performance of the vehicle-mounted module;
the EMI immunity circuit is composed of an inductor ML1, an inductor ML2 and an inductor ML3 which are connected in parallel, a capacitor MC13 is connected between the lines at the front ends of the inductor ML1 and the inductor ML3, a capacitor MC15 is connected between the inductor ML2 and the inductor ML3, and input ends of the inductor ML1, the inductor ML2 and the inductor ML3 are respectively connected with a TIN1 end, a TIN2 end and a GNDT end which are connected with the temperature acquisition module; by arranging the EMI immunity circuit, electromagnetic interference in the circuit can be effectively eliminated;
the voltage division follower circuit comprises a voltage follower MU3A and a voltage follower MU3B; the inductor ML1 and the inductor ML2 are correspondingly connected with the anodes of the voltage follower MU3A and the voltage follower MU3B respectively; a line is arranged between the inductor ML2 and the voltage follower MU3B and is connected with the inductor ML3, and a capacitor MC17 is arranged on the line; a line is arranged between the inductor ML1 and the voltage follower MU3A and is connected with the inductor ML3, and a capacitor MC16 is arranged on the line; capacitor MC16 is connected in parallel with capacitor MC17; a resistor MR13 and a resistor MR14 are also arranged on the voltage division following circuit in parallel, one end of the resistor MR13 is connected between the inductor ML1 and the voltage follower MU3A, and one end of the resistor MR14 is connected between the inductor ML2 and the voltage follower MU3B; the other ends of the resistor MR13 and the resistor MR14 are connected in parallel, and then are connected with the VCCA end and the ground end GNDC through the capacitor MC12, and the ground end GNDC is arranged between the rear end of the inductor ML3 and the connecting lines of the capacitors MC16 and MC17; the rear end of the voltage follower MU3A is connected in series with a resistor MR11 and an interface TP22, a line connection capacitor MC14 is arranged between the resistor MR11 and the interface TP22, the tail end of the capacitor MC14 is provided with a grounding end GNDC, and the rear end of the MU3A is connected with the negative electrode of the MU3A through a line; similarly, a resistor MR15 and an interface TP24 are connected in series with the rear end of the voltage follower MU3B, a line connection capacitor MC18 is arranged between the resistor MR15 and the interface TP24, the tail end of the capacitor MC18 is provided with a grounding end GNDC, and the rear end of the MU3B is connected with the negative electrode of the MU3B through a line; the interface TP22 and the interface TP24 are used for carrying out data connection with the singlechip;
the collected temperature signals can be effectively isolated and buffered by arranging the voltage division follower circuit, so that the signal is ensured not to be distorted;
the singlechip is any one of STM32, NXP or Microchip series singlechips;
the temperature acquisition module adopts a platinum resistor or an NTC/PTC temperature sensor.
2. The temperature control method of a temperature control system of an electric vehicle charging device according to claim 1, characterized by:
(1) The temperature acquisition module in the control circuit amplifies and converts the temperature signal transmitted by the temperature acquisition module, and charges in a mode of current alternation and the like;
(2-1) the charging device outputs a guide pulse signal to the whole vehicle alternating current charging system through the control circuit, the whole vehicle charging system feeds back the success of communication, and the charging device is connected with a power supply loop and charges with rated current;
(2-2) when the real-time temperature of the three-eye plug is greater than or equal to the upper limit temperature threshold set by the charging device, a control circuit in the charging device cuts off a power supply loop, and charging is stopped; and performing 2-3-1 or 2-3-2 steps;
(2-3-1) when the real-time temperature of the three-eye plug is reduced below the lower limit threshold set by the charging device, the control circuit in the charging device controls the power supply circuit to be connected, and the charging is continued at rated current;
(2-3-2) after stopping charging, when the cooling time exceeds the time set by the charging device, the control circuit in the charging device controls the power supply circuit to be connected, and charging is continued with rated current;
(2-4) when the repeated cycle of the charging process of 2-2, 2-3-1 or 2-2, 2-3-2 occurs and the set cycle start and disconnection times are exceeded, the control circuit controls the charging device to stop charging permanently unless the three-eye plug is plugged in and plugged out to supply power again;
(3) When the charge amount is full, the control circuit controls the charging device to stop charging.
3. The temperature control method of a temperature control system of an electric vehicle charging device according to claim 1, characterized by:
(1) The temperature acquisition module in the control circuit amplifies and converts the temperature signal transmitted by the temperature acquisition module, and charges in a current balance mode;
(2) The temperature acquisition module measures the internal temperature of the three-eye plug in real time and transmits the measured value to the temperature control module in the control circuit;
(2-1) the charging device outputs a minimum guiding pulse signal specified by a standard to the whole vehicle alternating current charging system through the control circuit, and if the feedback communication of the whole vehicle charging system is successful, the charging device is connected with a power supply loop and charges with a minimum current specified by the standard;
(2-2) when the real-time temperature of the three-eye plug is greater than or equal to the upper limit temperature threshold set by the charging device, the charging device maintains minimum current charging; when the temperature is still increased and exceeds the limit temperature threshold set by the charging device, a control circuit in the charging device cuts off a power supply loop and stops charging;
(2-3) when the real-time temperature of the three-eye plug is within a specified time and does not exceed a set upper limit temperature threshold value, a control circuit in the charging device increases the duty ratio of the guide pulse signal and transmits the guide pulse signal to the whole vehicle alternating current charging system, and the whole vehicle charging system synchronously increases the charging current after receiving the guide pulse signal with the increased duty ratio;
(2-4) repeating the operation of 2-3 when the real-time temperature of the three-eye plug is still not more than the set upper temperature threshold value within the set time after the completion of 2-3, and gradually increasing the duty ratio of the guide pulse signal until the current rises to the set rated current;
(2-5) when the real-time temperature of the three-eye plug exceeds the set upper limit temperature threshold value within the set time after the completion of the step 2-4, the charging device keeps outputting a corresponding pulse signal, and the whole vehicle charging system charges according to a corresponding current;
(2-6) when the temperature of the three-eye plug is continuously increased to the limit temperature value set by the charging device after the step 2-5 is carried out, the control circuit controls the charging device to stop charging permanently unless the three-eye plug is plugged in or plugged out to supply power again;
(3) When the charge amount is full, the control circuit controls the charging device to stop charging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810561125 | 2018-06-04 | ||
| CN2018105611781 | 2018-06-04 | ||
| CN201810561125X | 2018-06-04 | ||
| CN201810561178 | 2018-06-04 |
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| CN208623357U (en) * | 2018-06-04 | 2019-03-19 | 南京康尼新能源汽车零部件有限公司 | The temperature control system of charging device of electric automobile |
| CN109632118B (en) * | 2018-12-20 | 2020-09-18 | 中国电子科技集团公司第四十八研究所 | CMOS temperature sensing circuit and MEMS temperature sensor system |
| DE102019117648A1 (en) * | 2019-07-01 | 2021-01-07 | Phoenix Contact E-Mobility Gmbh | Temperature-monitored charging connector part |
| CN110303920A (en) * | 2019-07-31 | 2019-10-08 | 南京康尼新能源汽车零部件有限公司 | AC charging attachment device and temperature protecting method |
| CN110901429A (en) * | 2019-11-29 | 2020-03-24 | 南京康尼新能源汽车零部件有限公司 | Adjustable charging device with abnormal connection detection function and control method |
| CN110979051A (en) * | 2019-11-29 | 2020-04-10 | 南京康尼新能源汽车零部件有限公司 | Charging device with abnormal connection detection function and control method |
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| CN108649668A (en) | 2018-10-12 |
| CN208623357U (en) | 2019-03-19 |
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