CN105172612A - Device for detecting connecting state of charging equipment and electric automobile - Google Patents

Device for detecting connecting state of charging equipment and electric automobile Download PDF

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Publication number
CN105172612A
CN105172612A CN201510689782.9A CN201510689782A CN105172612A CN 105172612 A CN105172612 A CN 105172612A CN 201510689782 A CN201510689782 A CN 201510689782A CN 105172612 A CN105172612 A CN 105172612A
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China
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resistance
binistor
electric capacity
detecting device
charging equipment
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CN105172612B (en
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李奇
韩树龙
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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Abstract

The invention discloses a device for detecting the connecting state of charging equipment and an electric automobile. The device for detecting the connecting state of the charging equipment comprises a switching element, a first resistor and a controller. The switching element is provided with an input end, an output end and a control end. The control end of the switching element is connected with the charging equipment, the input end of the switching element is connected with a power source, and the switching element is used for changing the conducting state between the input end and the output end when receiving a connecting signal of the charging equipment. The first end of the first resistor is connected with the control end of the switching element, and the second end of the first resistor is connected with the power source. The controller is connected with the output end of the switching element and used for determining the connecting state of the charging equipment according to the conducting state of the switching element. By means of the device for detecting the connecting state of the charging equipment and the electric automobile, the charging safety problem existing in the electric automobile in the related technology is solved.

Description

The detecting device of charging equipment coupled condition and electronlmobil
Technical field
The present invention relates to electronlmobil field, in particular to a kind of detecting device and electronlmobil of charging equipment coupled condition.
Background technology
Charging is a critical function of pure electric automobile, and the safety of charging is an important indicator of pure electric automobile.The charging of pure electric automobile is divided into AC charging and DC charging two kinds of patterns, in AC charging pattern, the outer charging equipment of car is connected with pure electric automobile by charging gun, and alternating current is converted to direct current, for automobile power cell provides electric energy by the vehicle-mounted AC charging machine of pure electric automobile.Whether, for the consideration to secure context, the vehicle inserting charging gun can not travel, and forbids warm swap charging gun, in order to meet this two charging requirement, just needing to detect charging gun in real time and being connected with pure electric automobile charging inlet.
Existing method of inspection is when charging gun is connected with electronlmobil, and the direct output low level of charging equipment, to entire car controller, just determines that when entire car controller receives low level charging gun connects.In such method of inspection, the low level (also namely connecting detection signal) that charging equipment exports causes detection mistake than being easier to be interfered, such testing circuit poor anti jamming capability, and when interference ratio is larger time, likely damage is caused to the input processing circuit of entire car controller, thus affect the charging safety of pure electric vehicle.
For the charging safety problem that electronlmobil in correlation technique exists, not yet actv. solution is proposed at present.
Summary of the invention
Embodiments provide a kind of detecting device and electronlmobil of charging equipment coupled condition, at least to solve the charging safety problem that in correlation technique, electronlmobil exists.
According to an aspect of the embodiment of the present invention, provide a kind of detecting device of charging equipment coupled condition, this detecting device comprises: binistor, binistor has input end, mouth and control end, the control end of binistor is connected with charging equipment, the input end of binistor is connected with power supply, and binistor is used for the conducting state changed when receiving the connection signal of charging equipment between input end and mouth; First resistance, the first end of the first resistance is connected with the control end of binistor, and the second end of the first resistance is connected with power supply; And controller, be connected with the mouth of binistor, for the coupled condition of the conducting state determination charging equipment according to binistor.
Further, this detecting device also comprises: the second resistance, is connected between charging equipment and the control end of binistor; And filter circuit, be connected to first node with power supply, and be connected with the control end of binistor, for carrying out filtering to connection signal.
Further, filter circuit comprises: filter capacitor, is connected between first node and the control end of binistor; First diode, the first end of the first diode is connected with the control end of binistor, the second end ground connection of the first diode; And first electric capacity, the first end of the first electric capacity is connected with the control end of binistor, the second end ground connection of the first electric capacity.
Further, this detecting device also comprises: optocoupler change-over circuit, is connected with the mouth of binistor, for when the input end of binistor and mouth conducting, and output detection signal; And signal processing circuit, Section Point is connected to optocoupler change-over circuit, and be connected to the 3rd node with controller, for when receiving detection signal, export corresponding level signal to controller, wherein, if the level signal that controller receives is high level signal, then determine that charging equipment does not connect, if the level signal that controller receives is low level signal, then determine that charging equipment connects.
Further, optocoupler change-over circuit comprises: the 3rd resistance, and the first end of the 3rd resistance is connected with the mouth of binistor; Opto-coupler chip, the first end of opto-coupler chip is connected with the second end of the 3rd resistance; And the first filtering electronic circuit, be connected, for carrying out filtering to detection signal with the second end of opto-coupler chip and Section Point respectively.
Further, the first filtering electronic circuit comprises: the second electric capacity, and the first end of the second electric capacity is connected with the second end of opto-coupler chip, the second end ground connection of the second electric capacity; Second diode, the first end of the second diode is connected with the first end of the second electric capacity, the second end ground connection of the second diode; And the 4th resistance, the first end of the 4th resistance is connected with the first end of the second electric capacity, and the second end of the 4th resistance is connected with Section Point.
Further, signal processing circuit comprises: the 5th resistance, is connected between Section Point and the 3rd node; 3rd electric capacity, the first end of the 3rd electric capacity is connected with Section Point, the second end ground connection of the 3rd electric capacity; 6th resistance, is connected between first node and Section Point; And the second filtering electronic circuit, be connected with the 3rd node, for carrying out filtering to level signal.
Further, the second filtering electronic circuit comprises: the 7th resistance, and the first end of the 7th resistance is connected with the 3rd node, the second end ground connection of the 7th resistance; And the 4th electric capacity, the first end of the 4th electric capacity is connected with the 3rd node, the second end ground connection of the 4th electric capacity.
Further, this detecting device also comprises: relay, and the input end of relay is connected with power supply, and the mouth of relay is connected with first node, and the control end of relay is connected with controller, and relay is used for when receiving the energizing signal of controller closed.
According to another aspect of the embodiment of the present invention, provide a kind of electronlmobil, this electronlmobil comprises the detecting device of above-mentioned charging equipment coupled condition.
In embodiments of the present invention, the control end of binistor is connected to charging equipment, to detect the connection signal that charging equipment sends, and eliminate electromagnetic interference by the first resistance, to improve the accuracy of the connection signal received, the conducting state between its input end and mouth is changed when binistor receives connection signal, controller determines the coupled condition of charging equipment according to the conducting state of binistor, thus solve the charging safety problem that in correlation technique, electronlmobil exists, improve the accuracy of the coupled condition detecting charging equipment.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the detecting device of charging equipment coupled condition according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the charging gun internal circuit according to the embodiment of the present invention; And
Fig. 3 is the schematic diagram of the detecting device of an optional charging equipment coupled condition according to the embodiment of the present invention.
Detailed description of the invention
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in specification sheets of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
First, the part noun occurred in the process be described the embodiment of the present invention or term are applicable to description below:
Relay: be a kind of electric control device, is when the change of input (energizing quantity) reaches regulation requirement, makes controlled volume that a kind of electrical equipment of predetermined Spline smoothing occurs in electric output circuit.It has control system (also known as input circuit) and by the interactive relationship between control system (also known as output loop).Usually be applied in the control circuit of automation, it is actually the one " automatic switch " going to control big current running with small area analysis.
Opto-coupler chip: also known as photoisolator or photoelectrical coupler, is called for short optocoupler.It take light as the device that medium carrys out transmission of electric signals, usually illuminator (infrared light-emitting diode LED) and light-receiving device (photosensitive semiconductor pipe) is encapsulated in same shell.When input end power up signal, illuminator emits beam, and light-receiving device just produces photocurrent after accepting light, flows out from mouth, thus achieves " electricity-light-electricity " conversion.
Aerotron: full name should be transistor, also bipolar transistor, crystal triode is claimed, there are PNP triode and NPN aerotron two type, aerotron is a kind of semiconductor devices controlling electric current, its effect is that small signal is zoomed into the larger electric signal of range value, also can use as contact switch.
Metal-oxide-semiconductor: also claim field effect transister is a kind of by after the amplification of the subtle change of input end electric current, at the transistor that mouth exports.
According to the embodiment of the present invention, provide a kind of embodiment of detecting device of charging equipment coupled condition, Fig. 1 is the schematic diagram of the detecting device of charging equipment coupled condition according to the embodiment of the present invention, as shown in Figure 1, this detecting device comprises: binistor 10, first resistance 20 and controller 30.Wherein, binistor has input end, mouth and control end, the control end of binistor 10 is connected with charging equipment 40, the input end of binistor 10 is connected with power supply 50, and binistor is used for the conducting state changed when receiving the connection signal of charging equipment between input end and mouth; The first end of the first resistance 20, first resistance is connected with the control end of binistor 10, and the second end of the first resistance is connected with power supply 50; Controller 30, is connected with the mouth of binistor 10, for the coupled condition of the conducting state determination charging equipment according to binistor 10.
Above-mentioned charging equipment can charging gun, controller can make to be the entire car controller of electronlmobil, binistor can use PNP triode, but be not limited to and use aerotron as binistor, also can select the binistor such as metal-oxide-semiconductor, thyristor, in the embodiment of the application, select PNP triode to be described.
Particularly, to pure electric automobile carry out AC charging time, can detect by the coupled condition of above-mentioned detection device to charging gun, in detecting device, the PNP triode of low cost can be used to make buffer circuit, and be equipped with pull-up resistor, namely the first above-mentioned resistance, one end of first resistance is connected with the control end of binistor, the other end is connected with positive source, by being equipped with pull-up resistor, the antijamming capability of circuit in detecting device can be strengthened, guarantee the connection signal accuracy received, when PNP triode receives connection signal, the emitter of aerotron and collecting electrode conducting, namely determine that charging equipment accesses when PNP triode conducting.
It should be noted that, when accessing charging gun, the connection signal that charging gun exports is low level pulse, therefore the application selects PNP triode, simultaneously, pull-up resistor (i.e. above-mentioned first resistance) is connected, with the emitter and collector of the conducting PNP triode when base stage receives low level pulse in the base stage of PNP triode; If the connection signal that charging gun exports is high level pulse, so just can adopt NPN aerotron, and connect pull down resistor in the base stage of NPN aerotron, namely the first above-mentioned resistance also can be pull down resistor, one end of pull down resistor is connected to the base stage of NPN aerotron, the other end is connected to power cathode, the emitter and collector of conducting NPN aerotron when receiving high level pulse to make base stage.
Alternatively, above-mentioned binistor can be also conducting state at initial condition, when receiving connection signal, binistor disconnects the connection of its input end and mouth, but it should be noted that when selecting this scheme, the binistor adopted is full control property device.
Pass through above-described embodiment, the control end of binistor is connected to charging equipment, to detect the connection signal that charging equipment sends, and eliminate electromagnetic interference by the first resistance, to improve the accuracy of the connection signal received, change the conducting state between its input end and mouth when binistor receives connection signal, controller determines the coupled condition of charging equipment according to the conducting state of binistor.Thus solve the charging safety problem that in correlation technique, electronlmobil exists, improve the accuracy of the coupled condition detecting charging equipment.
In an embodiment as illustrated in figure 2, charging gun has two terminals, one is connect to confirm end CON1, one is ground terminal CON2, ground terminal is for being connected to the negative pole of vehicle power, to realize and detecting device common, confirm to have connected between end and ground terminal resistance R and K switch in connection, the resistance of resistance R can be 220 ohm or 680 ohm, concrete needs confirm according to the charging equipment type of electronlmobil, a button of the K switch in charging gun and charging gun outside links, when button is not pressed, switch closes, the pulse of charging gun output low level, detecting device is in coupled condition according to the low level pulse determination charging gun detected, when a button is pressed, switch disconnects, charging gun stops output low level pulse, detecting device is then in not-connected status according to the signal determination charging gun detected.
Below in conjunction with Fig. 3 in detail embodiments of the invention are described in detail, as shown in Figure 3:
The detecting device of the application can also comprise: the second resistance R2, between the control end being connected to charging equipment and binistor Q; Filter circuit, is connected to first node J1 with power supply, and is connected with the control end of binistor Q, for carrying out filtering to connection signal.
Particularly, filter circuit can comprise: filter capacitor C, between the control end being connected to first node J1 and binistor Q; First diode D1, the first end of the first diode is connected with the control end of binistor Q, the second end ground connection of the first diode; First electric capacity C1, the first end of the first electric capacity is connected with the control end of binistor Q, the second end ground connection of the first electric capacity.
Binistor in above-described embodiment can be PNP triode; second resistance R2 plays current limliting; first diode D1 plays the effect of voltage stabilizing; filter capacitor C plays the effect of filtering; three devices are all that the base stage (i.e. control end) in order to protect PNP triode is interference-free; filter capacitor C and the first resistance R1 between the base stage and emitter of PNP triode, thus can make the work that PNP triode is fully saturated and stable.
Pass through above-described embodiment; adopt pull-up resistor and filter capacitor in circuit; can effectively avoid frequency electromagnetic waves to the interference of aerotron; thus the accuracy rate of detection can be improved; simultaneously by with the resistance of connecting between charging gun; can prevent big current from damaging aerotron, aerotron is played a protective role.
The detecting device of the application can also comprise: optocoupler change-over circuit, is connected with the mouth of binistor Q, and for when the input end of binistor and mouth conducting, output detection signal is to signal processing circuit; Signal processing circuit, Section Point J2 is connected to optocoupler change-over circuit, and be connected to the 3rd node J3 with controller CPU, for when receiving detection signal, export corresponding level signal to controller, wherein, if the level signal that controller receives is high level signal, then determine that charging equipment does not connect, if the level signal that controller receives is low level signal, then determine that charging equipment connects.
Above-mentioned optocoupler change-over circuit can comprise: the 3rd resistance R3, and the first end of the 3rd resistance is connected with the mouth of binistor Q; Opto-coupler chip U1, the first end of opto-coupler chip is connected with the second end of the 3rd resistance; First filtering electronic circuit, is connected, for carrying out filtering to detection signal with the second end of opto-coupler chip and Section Point J2 respectively.3rd end of opto-coupler chip and the 4th end ground connection.
Optionally, the first filtering electronic circuit can comprise: the second electric capacity C2, and the first end of the second electric capacity is connected with second end of opto-coupler chip U1, the second end ground connection of the second electric capacity; Second diode D2, the first end of the second diode is connected with the first end of the second electric capacity C2, the second end ground connection of the second diode; 4th resistance R4, the first end of the 4th resistance is connected with the first end of the second electric capacity C2, and the second end of the 4th resistance is connected with Section Point J2.
Particularly, the 3rd resistance R3 is positioned on the input circuit of opto-coupler chip U1, its objective is the electric current in order to limit input circuit, and opto-coupler chip is operated in a rational range of current.Second electric capacity C2 and the second diode D2 is arranged in the output loop of opto-coupler chip, and the effect of the second electric capacity C2 carries out filtering to the detection signal exported, and the second diode D2 is zener diode, and its effect is the magnitude of voltage of the detection signal in order to stable output.
It should be noted that, the power supply of powering for foregoing circuit can be 12 volts of power supplys that the storage battery of vehicle self-carrying provides, ground terminal (GND namely shown in Fig. 3) can be the negative pole of storage battery, and above-mentioned 4th resistance R4 can adopt resistance to be the resistance of zero ohm.
Pass through above-described embodiment, opto-coupler chip is adopted to carry out processing signals, isolate mutually between constrained input due to opto-coupler chip, electric signal transmission is made to have one-way feature, thus there is good electrical isolation capabilities and antijamming capability, and belong to the low resistance element of current mode work due to the input end of opto-coupler chip, thus there is very strong common mode inhibition capacity, thus stability and the anti-interference resistance of whole detecting device can be improved further.
Above-mentioned signal processing circuit can comprise: the 5th resistance R5, is connected between Section Point J2 and the 3rd node J3; 3rd electric capacity C3, the first end of the 3rd electric capacity is connected with Section Point J2, the second end ground connection of the 3rd electric capacity; 6th resistance R6, is connected between first node J1 and Section Point J2; Second filtering electronic circuit, is connected with the 3rd node J3, for carrying out filtering to level signal.
Particularly, the second filtering electronic circuit can comprise: the 7th resistance R7, and the first end of the 7th resistance is connected with the 3rd node J3, the second end ground connection of the 7th resistance; 4th electric capacity C4, the first end of the 4th electric capacity is connected with the 3rd node J3, the second end ground connection of the 4th electric capacity.
It should be noted that, 3rd electric capacity C3 is the electric capacity with antistatic protection function, 3rd electric capacity can be used in the interference preventing the electrostatic within 1.8 kilovolts to circuit, simultaneously, 3rd electric capacity can also be used for carrying out filtering to the detection signal received, by the high-frequency interferencing signal filtering in signal, thus strengthen the accuracy of signal measurement.5th resistance R5, 6th resistance R6 and the 7th resistance R7 is the resistance of mutual collaborative work, the value of three resistance needs to consider the antijamming capability of circuit and the power consumption levels of controller, when K switch is in off-state, the connection of charging gun confirms that the signal that end exports is high level, the electric current now flowing through three resistance is about 0.27 milliampere, when K switch is in closure state, the electric current now flowing through three resistance is about 4.4 milliamperes, no matter it is 0.27 milliampere or 4.4 milliamperes, its power consumption produced is relatively little, and the electric current in above-mentioned scope can overcome the impact of interfering signal.
When entire car controller is in normal working, detecting device is working properly, if now do not connect charging gun, the level value then inputting the CPU of entire car controller is that (Vbatt is the voltage of storage battery to (Vbatt × RES3)/(RES1+RES2+RES3), RES1 is the resistance of the 5th resistance, RES2 is the resistance of the 6th resistance, RES3 is the resistance of the 7th resistance), then entire car controller goes out to judge to be input as high level according to voltage detecting, and namely the coupled condition of charging gun is not for connect.When entire car controller is in normal working, if connect charging gun, then input the level value of entire car controller CPU close to zero, then according to this level value, entire car controller judges that charging gun connects.
The wire harness transferring to entire car controller by battery charger due to charging connection signal is longer, the level signal that the charging gun caused exports is subject to the electromagnetic environment interference of battery-driven car complexity, and adopt the technical scheme of the application, at the resistance that the signal processing circuit of entire car controller end selects resistance smaller, and partial pressure value is set in a rational scope, thus can guarantee that the magnitude of voltage that entire car controller collects is not shaken, and reduce signal disturbing, the accuracy of detection can be improved.
Optionally, the detecting device of the application can also comprise: relay U2, and the input end of relay is connected with positive source, and the mouth of relay is connected with first node J1, the control end of relay is connected with controller CPU, and relay is used for when receiving the energizing signal of controller closed.
Particularly, when entire car controller is in low-power consumption mode, entire car controller can disconnect by control relay, by the power-off of the treatment circuit of charging connection signal, thus reach the object reducing power consumption, meanwhile, the electromagnetic signal that treatment circuit can also be avoided to produce produces interference to other circuit.
By above-described embodiment, by vehicle control unit controls detecting device, power supply minimizing current draw can be closed in unnecessary, improve the degree of utilization of power supply.
According to the embodiment of the present invention, additionally provide a kind of embodiment of electronlmobil, this electronlmobil comprises the detecting device of above-mentioned charging equipment coupled condition.
Pass through above-described embodiment, the control end of binistor is connected to charging equipment, to detect the connection signal that charging equipment sends, and eliminate electromagnetic interference by the first resistance, to improve the accuracy of the connection signal received, the conducting state between its input end and mouth is changed when binistor receives connection signal, controller determines the coupled condition of charging equipment according to the conducting state of binistor, thus solve the charging safety problem that in correlation technique, electronlmobil exists, improve the accuracy of the coupled condition detecting charging equipment.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of operation, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification sheets all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be Personal Computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, read-only memory (ROM) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a detecting device for charging equipment coupled condition, is characterized in that, comprising:
Binistor, described binistor has input end, mouth and control end, the control end of described binistor is connected with charging equipment, the input end of described binistor is connected with power supply, and described binistor is used for the conducting state changed when receiving the connection signal of described charging equipment between input end and mouth;
First resistance, the first end of described first resistance is connected with the control end of described binistor, and the second end of described first resistance is connected with described power supply; And
Controller, is connected with the mouth of described binistor, for determining the coupled condition of described charging equipment according to the conducting state of described binistor.
2. detecting device according to claim 1, is characterized in that, described detecting device also comprises:
Second resistance, between the control end being connected to described charging equipment and described binistor; And
Filter circuit, is connected to first node with described power supply, and is connected with the control end of described binistor, for carrying out filtering to described connection signal.
3. detecting device according to claim 2, is characterized in that, described filter circuit comprises:
Filter capacitor, between the control end being connected to described first node and described binistor;
First diode, the first end of described first diode is connected with the control end of described binistor, the second end ground connection of described first diode; And
First electric capacity, the first end of described first electric capacity is connected with the control end of described binistor, the second end ground connection of described first electric capacity.
4. detecting device according to claim 2, is characterized in that, described detecting device also comprises:
Optocoupler change-over circuit, is connected with the mouth of described binistor, for when the input end of described binistor and mouth conducting, and output detection signal; And
Signal processing circuit, Section Point is connected to described optocoupler change-over circuit, and be connected to the 3rd node with described controller, for when receiving described detection signal, export corresponding level signal to described controller, wherein, if the described level signal that described controller receives is high level signal, then determine that described charging equipment does not connect, if the described level signal that described controller receives is low level signal, then determine that described charging equipment connects.
5. detecting device according to claim 4, is characterized in that, described optocoupler change-over circuit comprises:
3rd resistance, the first end of described 3rd resistance is connected with the mouth of described binistor;
Opto-coupler chip, the first end of described opto-coupler chip is connected with the second end of described 3rd resistance; And
First filtering electronic circuit, is connected, for carrying out filtering to described detection signal with the second end of described opto-coupler chip and described Section Point respectively.
6. detecting device according to claim 5, is characterized in that, described first filtering electronic circuit comprises:
Second electric capacity, the first end of described second electric capacity is connected with the second end of described opto-coupler chip, the second end ground connection of described second electric capacity;
Second diode, the first end of described second diode is connected with the first end of described second electric capacity, the second end ground connection of described second diode; And
4th resistance, the first end of described 4th resistance is connected with the first end of described second electric capacity, and the second end of described 4th resistance is connected with described Section Point.
7. detecting device according to claim 4, is characterized in that, described signal processing circuit comprises:
5th resistance, is connected between described Section Point and described 3rd node;
3rd electric capacity, the first end of described 3rd electric capacity is connected with described Section Point, the second end ground connection of described 3rd electric capacity;
6th resistance, is connected between described first node and described Section Point; And
Second filtering electronic circuit, is connected with described 3rd node, for carrying out filtering to described level signal.
8. detecting device according to claim 7, is characterized in that, described second filtering electronic circuit comprises:
7th resistance, the first end of described 7th resistance is connected with described 3rd node, the second end ground connection of described 7th resistance; And
4th electric capacity, the first end of described 4th electric capacity is connected with described 3rd node, the second end ground connection of described 4th electric capacity.
9. detecting device as claimed in any of claims 2 to 8, is characterized in that, described detecting device also comprises:
Relay, the input end of described relay is connected with described power supply, the mouth of described relay is connected with described first node, and the control end of described relay is connected with described controller, and described relay is used for when receiving the energizing signal of described controller closed.
10. an electronlmobil, is characterized in that, comprises the detecting device of the charging equipment coupled condition in claim 1 to 9 described in any one.
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