CN110854629B - Charging connector capable of preventing over-temperature - Google Patents
Charging connector capable of preventing over-temperature Download PDFInfo
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- CN110854629B CN110854629B CN201911186712.6A CN201911186712A CN110854629B CN 110854629 B CN110854629 B CN 110854629B CN 201911186712 A CN201911186712 A CN 201911186712A CN 110854629 B CN110854629 B CN 110854629B
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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
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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
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
Abstract
The invention relates to a charging connector capable of preventing over-temperature, which comprises a shell, a temperature detection module, a central control module and a connection module, wherein the temperature detection module is arranged on the shell; the temperature detection module and the central control module are arranged in the shell, the shell is fixed on the charging connection port by the connection module, the temperature detection module is used for carrying out temperature detection after the connection module is connected to the charging connection port and transmitting a warning signal to the central control module when the temperature exceeds a preset range, and the central control module controls the connection module to divide the disconnection time of the connection module according to the fact that the temperature exceeds the preset temperature range when receiving the warning signal. The invention can accurately monitor the temperature on the existing connector, prevent the temperature from exceeding the limit in the charging process of the connector, can safely use the connector and prolong the service life of the connector.
Description
Technical Field
The invention belongs to the technical field of connectors, and particularly relates to a charging connector capable of preventing over-temperature.
Background
Among the prior art, use the connector to charge to the vehicle, this is a using-way of the connector that is using at present, also is a use trend of future vehicle, then, when electric vehicle charges, it can satisfy vehicle quick charge's demand to hope generally that the connector, and quick charge can cause the electric current too big, the electric current too big can cause the temperature to rise too fast, in serious cases, can cause the too high loss connector of temperature, what is more, when faults such as short circuit appear, can cause the connector to burn out because of the high temperature. Although the connectors are protected by temperature in the prior art, the protection is not targeted, and the connectors cannot adapt to different use environments, for example, in the north and the south, due to large temperature difference, the same connectors are used for charging electric vehicles, so that the temperature judgment is not accurate enough, and the relative temperature of the connectors cannot be accurately judged.
Content of application
The application relates to a charging connector capable of preventing over-temperature, which comprises a shell, a temperature detection module, a control module and a connection module; the temperature detection module and the central control module are arranged in the shell, the shell is fixed on the charging connection port by the connection module, the temperature detection module is used for carrying out temperature detection after the connection module is connected to the charging connection port and transmitting a warning signal to the central control module when the temperature exceeds a preset range, and the central control module controls the connection module to divide the disconnection time of the connection module according to the fact that the temperature exceeds the preset temperature range when receiving the warning signal.
The connecting module of the charging connector for preventing over-temperature comprises a female port and a switchable male port which are clamped with the charging connecting port, and the shell is arranged between the female port and the male port; the male port can be switched to a port of the same type as the charging connecting port, and the connecting module controls the connection and disconnection between the female port and the male port through a controllable switch.
The charging connector capable of preventing over-temperature is characterized in that the temperature detection module can detect the high temperature and the low temperature of the charging connector, when the temperature exceeds the high temperature and the low temperature, the range value of the high temperature and the low temperature exceeding the threshold value is transmitted to the central control module, the central control module performs on-off control of the connecting module according to the temperature out-of-limit signal of the temperature detection module, and the temperature detection module can receive command data of the control module and adjust the temperature threshold value after command analysis.
The charging connector for preventing over-temperature, the temperature detection module includes: the device comprises a current source, a port connecting end, a shell connecting end, an ADC unit, a control unit, a high-temperature threshold storage unit, a low-temperature threshold storage unit, a digital temperature data unit, a comparator unit, a gate circuit, a trigger, an alarm output end, a serial data input end, a command storage unit, a state unit and an alarm response unit; the current source is connected with an external power supply and converts a voltage signal into a stable current signal, the current source is also connected with the control unit and receives a control signal of the control unit to regulate and control the current signal, the current source comprises a first current source and a second current source, the output end of the first current source is connected with a port connecting end, the output end of the second current source is connected with a shell connecting end, and the port connecting end and the shell connecting end respectively perform analog-to-digital signal conversion through the ADC unit; the port connecting end is used for detecting the temperature of the charging connecting port, and the shell connecting end is used for detecting the temperature of the environment where the charging connecting port is located; the high-temperature threshold storage unit comprises a first sub high-temperature threshold storage unit and a second sub high-temperature threshold storage unit, the low-temperature threshold storage unit comprises a first sub low-temperature threshold storage unit and a second sub low-temperature threshold storage unit, and the digital temperature data unit comprises a first sub digital temperature data unit and a second sub digital temperature data unit; the output end of the ADC unit is divided into two paths, the first path is connected with the first sub high-temperature threshold storage unit, the first sub low-temperature threshold storage unit and the first sub digital temperature data unit, the second path is connected with the second sub high-temperature threshold storage unit, the second sub low-temperature threshold storage unit and the second sub digital temperature data unit; the high-temperature threshold storage unit, the low-temperature threshold storage unit and the digital temperature data unit are all connected with the comparator unit, the output end of the comparator unit is connected with the gate circuit, the output end of the gate circuit is connected with the trigger, and the trigger is controlled by the transistor to trigger the warning output end.
The gate circuit is an AND gate circuit, the transistor is a triode, the trigger is connected with the base electrode of the triode, the warning output end is connected with the collector electrode of the triode, and the emitter electrode of the triode is grounded.
The serial data input end of the charging connector for preventing the over-temperature receives the serial commands of the central control module and stores the serial commands in the command storage unit, the state unit is used for controlling the states of the high-temperature threshold storage unit, the low-temperature threshold storage unit and the digital temperature data unit, and the warning response unit is used for connecting the trigger and controlling the response state of the trigger.
Prevent charging connector of excess temperature, order memory cell, state unit, warning response unit connect through first bus, high temperature threshold value memory cell, low temperature threshold value memory cell, digital temperature data unit pass through the second bus connection, first bus and second bus carry out series connection through the MOS pipe, the MOS pipe is according to the control of control unit switches on.
The input end of the ADC unit is also connected with the gate circuit.
The charging connector capable of preventing over-temperature also comprises a clock unit, wherein the input end of the clock unit is connected with the state unit, the output end of the clock unit is respectively connected with a second AND gate and a control unit, after the trigger is triggered, the state unit controls the clock unit to time, a timing signal is sent to the timing unit, after the timing signal exceeds a timing set value determined by the state unit, the timing unit sends a restarting signal to the control unit and the first input end of the second AND gate respectively, after the control unit receives the restarting signal, a control signal is sent to the second input end of the second AND gate, the input end of the second AND gate is connected with the current source, and after the second AND gate receives the first input end signal and the second input end signal, the output end of the second AND gate controls the current source to be started, and the temperature detection of the temperature detection end is.
The charging connector for preventing the over-temperature is characterized in that the initial value of the clock unit is greater than a first time value, when the state unit signal is not received, the time clock of the clock unit is greater than the first time value and outputs high level, the current source is kept in a working state, when the state unit signal is received, the clock unit is restarted, the clock unit starts timing from zero, when the time value is between zero and the first time value, the clock unit outputs low level, the current source is in a closed state, and the temperature detection end does not work.
In order to solve the technical problems: the application provides a connector of safe handling, it can connect on current connector, as a switching mouth to set up accurate temperature monitoring module in the switching mouth, through the accurate monitoring of temperature, when the temperature is more limited, in time control connection port disconnection, the effectual security performance who promotes the connector. The main improvement point of the invention is that a precise temperature detection unit is arranged, the temperature of the connector can be detected, and a controllable switch in the connection module is matched to carry out a charging process of temperature off-limit disconnection for preset time, so that the temperature is correspondingly reduced; as another improvement point of the invention, the state unit is arranged to be matched with the clock unit, and the special clock is matched with the control unit so as to disconnect the detection end when the controllable switch is disconnected due to overhigh temperature, and the clock unit is used for reasonably timing, so that the state control of each module can be better controlled according to the state control of the state unit; the main improvement point of the invention is that the invention can be suitable for different connectors, command storage and command sending can be carried out in a bus mode through serial command control of the central control module, the temperature threshold value and the temperature detection precision can be adjusted according to the command, the temperature of the charging port can be reasonably and effectively compensated according to the ambient temperature, the detection error caused by the absolute value of overhigh temperature of the port can be effectively avoided through compensation, and the accuracy of temperature detection of the connector can be improved through over-temperature control of the ambient temperature and the relative temperature value of the charging port.
Drawings
Fig. 1 is a schematic view of a charging connector of the present invention.
FIG. 2 is a schematic view of the temperature sensing unit of the present invention.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Fig. 1 is a schematic view of the charging connector of the present invention. The invention provides a switching port of a charging port, a high-precision temperature detection unit is arranged on the switching port, the temperature of the charging port and the temperature of a shell are detected respectively, the temperature on the shell is the temperature of the environment, the temperature on the shell is compared with a preset temperature threshold value according to two different temperatures, the environment temperature and the port temperature are relatively stable, the accuracy of control according to the temperature of a connecting port is improved, the connection and the disconnection of the switching port are effectively controlled according to the temperature detection of the set switching port, and the over-temperature of a connecting circuit is prevented.
As shown in fig. 1, the connector may be substantially provided with a plurality of switchable or adjustable male ports and female ports, and the switching between the female ports and the male ports can adapt to different charging ports, especially when the connection ports are not unified, thereby increasing the application range of the connector.
Preferably, a plurality of female ports or male ports can be connected simultaneously, a plurality of external charging ports can be connected simultaneously through a plurality of parallel female ports or male ports, the voltage of a plurality of power supplies can be received in a parallel connection mode, and therefore the charging speed of the electric automobile can be improved.
The application relates to a charging connector capable of preventing over-temperature, which comprises a shell, a temperature detection module, a control module and a connection module; the temperature detection module and the central control module are arranged in the shell, the shell is fixed on the charging connection port by the connection module, the temperature detection module is used for carrying out temperature detection after the connection module is connected to the charging connection port and transmitting a warning signal to the central control module when the temperature exceeds a preset range, and the central control module controls the connection module to divide the disconnection time of the connection module according to the fact that the temperature exceeds the preset temperature range when receiving the warning signal.
Preferably, the preset temperature is adjustable according to a serial command sent by an external central control module, different temperature division can be performed according to different adjusted serial commands, and different time is cut off according to different temperature division.
The connecting module of the charging connector for preventing over-temperature comprises a female port and a switchable male port which are clamped with the charging connecting port, and the shell is arranged between the female port and the male port; the male port can be switched to a port of the same type as the charging connecting port, and the connecting module controls the connection and disconnection between the female port and the male port through a controllable switch.
The charging connector capable of preventing over-temperature is characterized in that the temperature detection module can detect the high temperature and the low temperature of the charging connector, when the temperature exceeds the high temperature and the low temperature, the range value of the high temperature and the low temperature exceeding the threshold value is transmitted to the central control module, the central control module performs on-off control of the connecting module according to the temperature out-of-limit signal of the temperature detection module, and the temperature detection module can receive command data of the control module and adjust the temperature threshold value after command analysis.
FIG. 2 is a schematic view of the temperature detecting unit according to the present invention. The temperature detection module includes: the device comprises a current source, a port connecting end, a shell connecting end, an ADC unit, a control unit, a high-temperature threshold storage unit, a low-temperature threshold storage unit, a digital temperature data unit, a comparator unit, a gate circuit, a trigger, an alarm output end, a serial data input end, a command storage unit, a state unit and an alarm response unit; the current source is connected with an external power supply and converts a voltage signal into a stable current signal, the current source is also connected with the control unit and receives a control signal of the control unit to regulate and control the current signal, the current source comprises a first current source and a second current source, the output end of the first current source is connected with a port connecting end, the output end of the second current source is connected with a shell connecting end, and the port connecting end and the shell connecting end respectively perform analog-to-digital signal conversion through the ADC unit; the port connecting end is used for detecting the temperature of the charging connecting port, and the shell connecting end is used for detecting the temperature of the environment where the charging connecting port is located; the high-temperature threshold storage unit comprises a first sub high-temperature threshold storage unit and a second sub high-temperature threshold storage unit, the low-temperature threshold storage unit comprises a first sub low-temperature threshold storage unit and a second sub low-temperature threshold storage unit, and the digital temperature data unit comprises a first sub digital temperature data unit and a second sub digital temperature data unit; the output end of the ADC unit is divided into two paths, the first path is connected with the first sub high-temperature threshold storage unit, the first sub low-temperature threshold storage unit and the first sub digital temperature data unit, the second path is connected with the second sub high-temperature threshold storage unit, the second sub low-temperature threshold storage unit and the second sub digital temperature data unit; the high-temperature threshold storage unit, the low-temperature threshold storage unit and the digital temperature data unit are all connected with the comparator unit, the output end of the comparator unit is connected with the gate circuit, the output end of the gate circuit is connected with the trigger, and the trigger is controlled by the transistor to trigger the warning output end.
Preferably, before the external serial command is not input, the command storage unit stores the previous command, the state unit respectively detects and controls the state of each unit module, such as the states of the high temperature threshold storage unit, the low temperature threshold storage unit and the digital temperature data unit, after the control unit controls the conduction of the MOS tube, the command unit can send the stored command to the high temperature threshold storage unit and the low temperature threshold storage unit for temperature threshold correction and correction, after the external serial command is input, the command in the assignment storage unit is updated, after the command is updated, the state command is sent to the state unit, the state unit sends the state control command to each module, such as the clock unit, then the assignment storage unit updates the temperature information of the high temperature threshold storage unit, the low temperature threshold storage unit and the like, after the update, and after the state unit receives the feedback signal, the proposing storage unit sends a temperature threshold value correction command to the high-temperature threshold value storage unit and the low-temperature threshold value storage unit so as to ensure that the temperature threshold value is accurate.
Preferably, the external power source may be a micro battery with a built-in connector, or may be a device that converts the electric energy at the charging connection port through an inverter, for example, when the connector is connected to the charging connection port and the charging connection port is connected to the electric vehicle charging device, the charging connection port has the electric energy, the electric energy is converted through the inverter to supply power to the current source, the current source is used for providing stable energy to the temperature detection port, and the current source can reduce the temperature drift of the temperature detection.
The gate circuit is an AND gate circuit, the transistor is a triode, the trigger is connected with the base electrode of the triode, the warning output end is connected with the collector electrode of the triode, and the emitter electrode of the triode is grounded.
The serial data input end of the charging connector for preventing the over-temperature receives the serial commands of the central control module and stores the serial commands in the command storage unit, the state unit is used for controlling the states of the high-temperature threshold storage unit, the low-temperature threshold storage unit and the digital temperature data unit, and the warning response unit is used for connecting the trigger and controlling the response state of the trigger.
Prevent charging connector of excess temperature, order memory cell, state unit, warning response unit connect through first bus, high temperature threshold value memory cell, low temperature threshold value memory cell, digital temperature data unit pass through the second bus connection, first bus and second bus carry out series connection through the MOS pipe, the MOS pipe is according to the control of control unit switches on.
The input end of the ADC unit is also connected with the gate circuit.
Preferably, the analog signal at the input terminal of the ADC unit is used as a trigger signal of the gate circuit through the gate circuit, and when the analog signal exists, the gate circuit continues to operate the gate circuit. Preferably, the analog signal at the input of the ADC is converted into a fault-tolerant signal easy to judge, and is output by the analog comparator to judge the existence of the analog signal.
The charging connector capable of preventing over-temperature also comprises a clock unit, wherein the input end of the clock unit is connected with the state unit, the output end of the clock unit is respectively connected with a second AND gate and a control unit, after the trigger is triggered, the state unit controls the clock unit to time, a timing signal is sent to the timing unit, after the timing signal exceeds a timing set value determined by the state unit, the timing unit sends a restarting signal to the control unit and the first input end of the second AND gate respectively, after the control unit receives the restarting signal, a control signal is sent to the second input end of the second AND gate, the input end of the second AND gate is connected with the current source, and after the second AND gate receives the first input end signal and the second input end signal, the output end of the second AND gate controls the current source to be started, and the temperature detection of the temperature detection end is.
Preferably, the clock signal is coordinated with the control unit to ensure that the external command is implemented.
The charging connector for preventing the over-temperature is characterized in that the initial value of the clock unit is greater than a first time value, when the state unit signal is not received, the time clock of the clock unit is greater than the first time value and outputs high level, the current source is kept in a working state, when the state unit signal is received, the clock unit is restarted, the clock unit starts timing from zero, when the time value is between zero and the first time value, the clock unit outputs low level, the current source is in a closed state, and the temperature detection end does not work.
By changing the working mode of the clock, the disconnection of the connector can be ensured when the temperature is too high, the temperature is prevented from being too high, after the disconnection for a period of time and the timing by the clock signal, the temperature detection is carried out again after the timing reaches a set value, and if the temperature requirement is not met, the state unit continues to restart the clock unit once and continues to disconnect the connector until the temperature reaches a preset value.
The application provides a connector of safe handling, it can connect on current connector, as a switching mouth to set up accurate temperature monitoring module in the switching mouth, through the accurate monitoring of temperature, when the temperature is more limited, in time control connection port disconnection, the effectual security performance who promotes the connector. The main improvement point of the invention is that a precise temperature detection unit is arranged, the temperature of the connector can be detected, and a controllable switch in the connection module is matched to carry out a charging process of temperature off-limit disconnection for preset time, so that the temperature is correspondingly reduced; as another improvement point of the invention, the state unit is arranged to be matched with the clock unit, and the special clock is matched with the control unit so as to disconnect the detection end when the controllable switch is disconnected due to overhigh temperature, and the clock unit is used for reasonably timing, so that the state control of each module can be better controlled according to the state control of the state unit; the main improvement point of the invention is that the invention can be suitable for different connectors, command storage and command sending can be carried out in a bus mode through serial command control of the central control module, the temperature threshold value and the temperature detection precision can be adjusted according to the command, the temperature of the charging port can be reasonably and effectively compensated according to the ambient temperature, the detection error caused by the absolute value of overhigh temperature of the port can be effectively avoided through compensation, and the accuracy of temperature detection of the connector can be improved through over-temperature control of the ambient temperature and the relative temperature value of the charging port. The invention can also update and correct the command according to the command, and ensure the accuracy of the temperature threshold.
Claims (7)
1. A charging connector capable of preventing over-temperature is characterized by comprising a shell, a temperature detection module, a central control module and a connection module; the temperature detection module and the central control module are arranged in the shell, the shell is fixed on the charging connection port by the connection module, the temperature detection module is used for detecting the temperature after the connection module is connected to the charging connection port and transmitting a warning signal to the central control module when the temperature exceeds a preset range, and the central control module controls the connection module to divide the disconnection time of the connection module according to the temperature exceeding the preset range when receiving the warning signal; the connecting module comprises a female port and a switchable male port, wherein the female port is connected with the charging connecting port in a clamping manner, and the shell is arranged between the female port and the male port; the male port can be switched to a port of the same type as the charging connecting port, and the connecting module controls the connection and disconnection between the female port and the male port through a controllable switch; the temperature detection module can detect the high and low temperatures of the charging connector, when the temperature exceeds the high and low temperatures, the range value of the high and low temperatures exceeding the threshold value is transmitted to the central control module, the central control module performs on-off control of the connecting module according to the temperature out-of-limit signal of the temperature detection module, and the temperature detection module can receive command data of the control module, and adjusts the temperature threshold value after command analysis; the temperature detection module includes: the device comprises a current source, a port connecting end, a shell connecting end, an ADC unit, a control unit, a high-temperature threshold storage unit, a low-temperature threshold storage unit, a digital temperature data unit, a comparator unit, a gate circuit, a trigger, an alarm output end, a serial data input end, a command storage unit, a state unit and an alarm response unit; the current source is connected with an external power supply and converts a voltage signal into a stable current signal, the current source is also connected with the control unit and receives a control signal of the control unit to regulate and control the current signal, the current source comprises a first current source and a second current source, the output end of the first current source is connected with a port connecting end, the output end of the second current source is connected with a shell connecting end, and the port connecting end and the shell connecting end respectively perform analog-to-digital signal conversion through the ADC unit; the port connecting end is used for detecting the temperature of the charging connecting port, and the shell connecting end is used for detecting the temperature of the environment where the charging connecting port is located; the high-temperature threshold storage unit comprises a first sub high-temperature threshold storage unit and a second sub high-temperature threshold storage unit, the low-temperature threshold storage unit comprises a first sub low-temperature threshold storage unit and a second sub low-temperature threshold storage unit, and the digital temperature data unit comprises a first sub digital temperature data unit and a second sub digital temperature data unit; the output end of the ADC unit is divided into two paths, the first path is connected with the first sub high-temperature threshold storage unit, the first sub low-temperature threshold storage unit and the first sub digital temperature data unit, the second path is connected with the second sub high-temperature threshold storage unit, the second sub low-temperature threshold storage unit and the second sub digital temperature data unit; the high-temperature threshold storage unit, the low-temperature threshold storage unit and the digital temperature data unit are all connected with the comparator unit, the output end of the comparator unit is connected with the gate circuit, the output end of the gate circuit is connected with the trigger, and the trigger is controlled by the transistor to trigger the warning output end.
2. A charging connector for preventing over-temperature according to claim 1, wherein said gate circuit is an and circuit, said transistor is a transistor, said trigger is connected to the base of said transistor, said alarm output is connected to the collector of said transistor, and the emitter of said transistor is grounded.
3. The charging connector for preventing over-temperature according to claim 1, wherein the serial data input terminal receives a serial command of the central control module and stores the serial command in the command storage unit, the state unit is used for controlling the states of the high temperature threshold storage unit, the low temperature threshold storage unit and the digital temperature data unit, and the warning response unit is used for connecting the trigger and controlling the response state of the trigger.
4. The charging connector for preventing overheat as set forth in claim 3, wherein said command memory unit, said status unit, and said warning response unit are connected through a first bus, said high temperature threshold memory unit, said low temperature threshold memory unit, and said digital temperature data unit are connected through a second bus, said first bus and said second bus are connected in series through MOS transistors, and said MOS transistors are turned on according to a control of said control unit.
5. The over-temperature preventing charging connector as claimed in claim 1, wherein the input terminal of the ADC unit is further connected to the gate circuit.
6. The charging connector for preventing excessive temperature according to claim 1, further comprising a clock unit, the input end of the clock unit is connected with the state unit, the output end of the clock unit is respectively connected with the second AND gate and the control unit, after the trigger is triggered, the state unit controls the clock unit to time and sends a timing signal, after the timing exceeds the timing set value determined by the state unit, the timing unit sends a restart signal to the control unit and the first input end of the second AND gate respectively, the control unit sends a control signal to a second input end of the second AND gate after receiving the restart signal, and the input end of the second AND gate is connected with the current source, and after the second AND gate receives signals of the first input end and the second input end, the output end controls the current source to start so as to perform temperature detection of the restart temperature detection end.
7. The connector as claimed in claim 6, wherein the initial value of the clock unit is greater than a first time value, the time clock of the clock unit is greater than the first time value when the status unit signal is not received, and outputs a high level, the current source is kept in an active state, when the status unit signal is received, the clock unit is restarted, the clock unit starts timing from zero, when the status unit signal is received, the clock unit outputs a low level, the current source is in an off state, and the temperature detecting terminal does not work.
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