CN104143845A - Wireless charging detecting system for electromobile - Google Patents

Wireless charging detecting system for electromobile Download PDF

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Publication number
CN104143845A
CN104143845A CN201310169463.6A CN201310169463A CN104143845A CN 104143845 A CN104143845 A CN 104143845A CN 201310169463 A CN201310169463 A CN 201310169463A CN 104143845 A CN104143845 A CN 104143845A
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China
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wireless charging
battery
electric energy
voltage
temperature
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CN201310169463.6A
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CN104143845B (en
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伍星驰
杨远航
卜方方
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BYD Co Ltd
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BYD Co Ltd
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Abstract

The invention provides a wireless charging detecting system for an electromobile. The wireless charging detecting system comprises an electric energy providing device, an electric energy receiving device and a battery manager. The electric energy providing device is connected with a charging station, and the electric energy receiving device and the battery manager are located on the electromobile. The electric energy providing device is used for transmitting electric energy to the electric energy receiving device through electromagnetic induction. The electric energy receiving device is located on the electromobile, and used for further transmitting the electric energy provided by the electric energy providing device to a vehicle-mounted power battery of the electromobile and carrying out self-checking in real time after the wireless charging procedure is started, and if a fault is detected, the electric energy receiving device sends a fault signal to the battery manager. The battery manager is used for disconnecting a wireless charging loop to stop wireless charging after receiving the fault signal. By means of the wireless charging detecting system, the safety and reliability of a charging device can be improved, and the service life of the charging device can be prolonged.

Description

Wireless charging detection system for electric automobile
Technical field
The present invention relates to electric vehicle engineering field, particularly a kind of wireless charging detection system for electric automobile.
Background technology
Along with new-energy automobile, the particularly continuous popularization of electric automobile or hybrid vehicle, new-energy automobile is day by day relevant to our daily life.The charging modes of electric automobile is mainly wired charging modes at present, but conventional wired charging modes exists a lot of weak points, and wireless charging mode can make up these deficiencies.
Wireless charging has started to be applied in some small-power charging field at present, for example mobile phone charging.But, be used for the high-power wireless charging device of charging electric vehicle at present also in the starting stage, also have a lot of weak points,, control strategy imperfection less such as system measuring ability, charge power can not be according to the states of vehicle mounted dynamic battery and change etc.In addition, with respect to the small-power charging of mobile phone, higher to the requirement of fail safe for the high-power charging of electric motor car.But existing also do not have perfect monitoring function to the wireless charging scheme of electric automobile, and, the ruuning situation of each parts and the electric parameter of each parts in detection system that cannot be real-time.And the existing wireless charging scheme to electric automobile can't provide safeguard measure to electric automobile, and cannot in the information of electrokinetic cell, change charge power according to car.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, the object of the invention is to propose a kind of wireless charging detection system for electric automobile, this system can improve security reliability and the useful life of charging device.
For achieving the above object, the embodiment of the present invention provides a kind of wireless charging detection system for electric automobile, comprise: electric energy generator, electric energy receiving system and battery manager, wherein said electric energy generator is connected with described charging station, described electric energy receiving system and described battery manager are positioned on described electric automobile, and described electric energy generator is used for utilizing electromagnetic induction to described electric energy receiving system electric energy transmitting; Described electric energy receiving system, described electric energy receiving system is positioned on described electric automobile, for the electric energy that described electric energy generator is provided, further transfer to the vehicle mounted dynamic battery of described electric automobile, and after entering wireless charging flow process, carry out in real time self check, if detected, there is fault, to described battery manager, send fault-signal;
Described battery manager, for disconnecting described wireless charging loop to stop wireless charging after receiving described fault-signal.
According to the wireless charging detection system for electric automobile of the embodiment of the present invention, can improve the safety and reliability of electric motor car when charging.The detection of the wireless charging detection system for electric automobile of the embodiment of the present invention comprises the multiple detections such as on-vehicle battery temperature detection, voltage detecting, voltage sample line burn out detection, temperature sampling line burn out detection, high-pressure system insulating monitoring, transmitting end equipment detection, receiving device detection, current monitoring, wireless charging ECU fault, has higher fail safe.When charging starts and in process, as long as break down, wireless charging system can be processed according to fault message.In addition, the wireless charging detection system of the employing embodiment of the present invention is convenient to the maintenance of wireless charging system, is convenient to find out failure cause, to after-sales service, provides convenience.The useful life that the wireless charging detection system of the employing embodiment of the present invention can also improve wireless charging system.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the schematic diagram of the wireless charging system for electric automobile of the embodiment of the present invention;
Fig. 2 is the electric energy transfer principle figure of the wireless charging system in Fig. 1;
Fig. 3 is the communication network schematic diagram according to the wireless charging system of the embodiment of the present invention;
Fig. 4 is for carrying out the control flow chart of the charging preparatory stage of wireless charging according to the embodiment of the present invention to electric automobile;
Fig. 5 is for carrying out the control flow chart in wireless charging stage according to the embodiment of the present invention to electric automobile;
Fig. 6 is for the electronic schematic diagram of crossing the wireless charging detection system of automobile according to of the invention process;
Fig. 7 is according to the battery temperature of the embodiment of the present invention and voltage monitoring schematic diagram;
Fig. 8 is according to the wireless charging transmitting terminal of the embodiment of the present invention and receiving terminal fault detect schematic diagram;
Fig. 9 is according to the schematic diagram of the electrokinetic cell detection of electrical leakage of the embodiment of the present invention;
Figure 10 is according to the schematic diagram of the electrokinetic cell detection of electrical leakage of the embodiment of the present invention; And
Figure 11 is according to the control flow chart of the wireless charging system detection system of the embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
First referring to figs. 1 to Fig. 5, the wireless charging system for electric automobile is described below.
Particularly, can be according to electromagnetic induction principle for the wireless charging system of electric automobile, the primary winding by being contained in charging station, to mounted in a vehicle secondary coil electric energy transmitting, charges to on-vehicle battery to realize.This mode can improve reliability, fail safe and the useful life of charging device.
In order to realize wireless charging; in charging station and electric motor car, supporting equipment must be installed; between transmitting terminal and receiving terminal, by home control network communication protocol, carry out information interaction, the content of communications protocol comprises identification, battery information, charging control signal, safeguard protection signal etc.On electric automobile, charging receiving end must be able to detect near charging transmitting terminal, near receiving terminal transmitting terminal also can detect.Wherein, transmitting terminal is electric energy providing end, and receiving terminal is electric energy receiving terminal.
As shown in Figure 1, wireless charging system mainly comprises master server 900, is arranged on transmitting end equipment 100, the power supply unit of charging station and is arranged on receiving equipment 200 in electric motor car, battery manager 300, vehicle mounted dynamic battery 402, high-tension distribution box 401, instrument 700 and instrument wireless charging switch 800 etc.Wherein, charging control strategy and wireless charging system need to support the use, and what charging control strategy was mainly described is the concrete operations flow process to charging battery of electric vehicle.
Charging control strategy comprises: electric automobile must just allow charging under dead ship condition; The condition that vehicle mounted dynamic battery 402 must meet wireless charging just allows to charge; At the bottom of onboard wireless charging device is arranged on car, charging station wireless charging device is installed on the ground; Master server 900 is by dedicated network and 100 communications of platform transmitting end equipment; Onboard wireless charging device and charging station wireless charging device need alignment; Need determine whether to need charging by user; Charging modes is wireless charging, and transmitting terminal and receiving terminal are realized the transmission of electric energy by electromagnetic induction; Wireless charging system has perfect safety monitoring function, and can change charge power according to on-vehicle battery state.
Wherein, stopping for charging refers to that car load hangs over P shelves or N shelves, and other high pressure power consumption equipment of car load also can be worked simultaneously, except motor.In wireless charging process, do not respond the change of gear signal.
Again the function of each equipment in wireless charging system is described below.
Particularly, the transmitting end equipment 100 of charging station refers to the wireless charging device that is arranged on charging station platform, transmitting end equipment 100 by electromagnetic induction Energy Transfer to being arranged on receiving equipment 200 in electric motor car.In electric motor car, receiving equipment mainly refers to onboard wireless charging ECU(Electronic Control Unit, electronic control unit).Wherein, onboard wireless charging ECU can carry out wireless telecommunications by wireless signal and transmitting end equipment 100, and can realize with car on Other related equipment carry out CAN(Controller Area Network, controller local area network) communication, can receive the energy that transmitting terminal 100 transmits, and can change power output according to the charge power demand of car load, give vehicle mounted dynamic battery 402 chargings.
Battery manager 300 has vehicle mounted dynamic battery 402 is carried out to temperature sampling, voltage sample, function to power battery charging and discharging current sampling, there is the function of calculating battery dump energy, and can control signal be sent to relevant electric component by CAN connection, to realize the management to battery functi on.
Vehicle mounted dynamic battery 402 is for being arranged in electric motor car, for electric motor car provides power output and for the energy storage device that on car, other power consumption equipments are powered, can repeatedly charge.
High-tension distribution box 401 is the high tension apparatus of the large electric current of break-make, its inside comprises a plurality of contactors, battery manager 300 can be controlled the closed of its inner contactor and turn-off by transmitting control signal to high-tension distribution box 401, thereby reaches the object of controlling large current switching.
In high-tension distribution box 401, have a low pressure connector, for the control signal by receiving battery manager 300 to control the break-make of inner contactor.
Master server 900 mainly refers to the equipment of being responsible for subscriber information management, has recorded electric automobile VIN code and the number-plate number of registered users, for wireless charging carries out authentication on master server 900.
In addition,, in wireless charging system, battery manager 300 is connected by CAN line with onboard wireless charging ECU200.Onboard wireless charging ECU200 is connected with high-tension distribution box 401 by high-voltage wiring harness.High-tension distribution box 401 is connected with vehicle mounted dynamic battery 402 by high-voltage wiring harness.
In addition, ECU200 is with a low pressure connector in onboard wireless charging, the effect of this low pressure connector be with electric motor car on parts carry out communication, comprise the CAN communication signal line with battery manager 300, self-test signal line, fault-signal line and low-voltage power supply line.
Instrument wireless charging switch 800 is controlled by user, presses this button when wireless charging prompting appears in instrument, and charging starts, and presses this button in wireless charging process, and charging finishes.Battery manager 300 detects this switching signal.
Fig. 2 shows the internal electric schematic diagram of wireless charging system.Electric energy is the transfer process to vehicle mounted dynamic battery by power supply grid, through links such as AC-DC conversion, inversion, electromagnetic coupled, rectification, voltage stabilizings.
Particularly, electric energy generator 100, i.e. charging station wireless charging device, wherein, electric energy generator 100 comprises charging station electrical network 101, ac-dc converter circuit 102, frequency conversion change-over circuit 103 and transmitting coil 104.Particularly, charging station electrical network 101 is used to wireless charging device that the three-phase alternating-current supply of 380V is provided.Ac-dc converter circuit 102 is for converting the 380V three-phase alternating current of charging station electrical network 101 to the direct current of voltage stabilization.Frequency conversion change-over circuit 103 is for converting the direct current of ac-dc converter circuit 102 outputs to the alternating source of certain frequency.Transmitting coil 104 is launched with the form of electromagnetic field for the alternating current that frequency conversion change-over circuit 103 is converted to.Wherein, the alternating current process transmitting coil 104 that frequency is certain, produces the magnetic field that characteristic frequency changes.
Electric energy receiving system 200, i.e. onboard wireless charging ECU.Wherein, electric energy receiving system 200 comprises receiving coil 201, rectification circuit 202, control module 203 and voltage stabilizing circuit 204.Wherein, in the alternating magnetic field that receiving coil 201 produces at transmitting coil 104, produce induced current, thereby realize charge from charging station electrical network 101 to the onboard wireless transmission of ECU200 of electric energy.Rectification circuit 202 converts the ac voltage signal of receiving coil 201 to d. c. voltage signal.Control module 203 is mainly battery information and the charge power demand sending according to battery manager 300, controls the power output of rectification circuit 202.The voltage signal of 204 pairs of rectification circuits of voltage stabilizing circuit, 202 outputs carries out filtering processing, makes the direct voltage of output more steady.
Vehicle mounted dynamic battery assembly 400 is vehicle-mounted energy-storage travelling wave tube.Wherein, vehicle mounted dynamic battery assembly 400 comprises high-tension distribution box 401 and vehicle mounted dynamic battery 402.Wherein, high-tension distribution box 401 is mainly used in the equipment as break-make high pressure.In one embodiment of the invention, high-tension distribution box 401 is for the switch as wireless charging high-pressure side.High-tension distribution box after receiving the wireless charging contactor adhesive signal that battery manager sends over, the wireless charging contactor adhesive of high-tension distribution box 401 inside, the conducting of wireless charging loop, charging starts.When charging finishes, battery manager 300 sends wireless charging contactor cut-off signal, and the wireless AC charging contactor of high-tension distribution box 401 inside disconnects, and wireless charging loop disconnects.
Vehicle mounted dynamic battery 402 is exported for electric motor car provides electric power, and in carrying out wireless charging process, onboard wireless charging ECU200 is to vehicle mounted dynamic battery 402 chargings.
Fig. 3 is the communication network figure of whole wireless charging system.As shown in Figure 3, whole wireless charging communication network comprises Power Environment Monitoring Network, comfortable net, battery subnet, wireless charging subnet, onboard wireless charging net and server subnet.
Respectively each communication network is described below.
Battery subnet master is the communication network between battery information collector 140 and battery manager 300, communication speed can be set to 250kbps, battery information collector 140 gathers voltage and the temperature information of vehicle mounted dynamic battery, and send to battery manager 300 by battery subnet, battery manager gathers battery information, carries out respective handling.
Server subnet mainly refers to the communication network between platform wireless charging device (transmitting end equipment 100) and wireless charging master server 900, platform wireless charging device 100 receives after the electric automobile VIN code and number-plate number information that onboard wireless charging device sends, and this information is sent to master server 900.Master server 900 determines whether registered user, and sends authentication information to platform wireless charging device, carries out respective handling.
Wireless charging subnet master is the communication network between onboard wireless charging ECU200 and charging station platform transmitting end equipment 100, and communication speed can be set to 250kbps.Onboard wireless charging ECU200 sends current state information and the charge power demand of vehicle mounted dynamic battery 402 to transmitting end equipment 100.Transmitting end equipment 100 is adjusted accordingly according to the battery information receiving.Platform wireless charging device 100 calculates charge capacity, and sends to onboard wireless charging ECU200.Onboard wireless charging ECU200 sends electric automobile VIN and license board information to platform wireless charging device 100.Platform wireless charging device 100 these electric automobile information of checking are also correspondingly processed.Platform wireless charging device 100 is set and is carried out wireless charging according to user, and carries out wireless telecommunications in real time and between onboard wireless charging ECU200.
Battery manager 300 carries out communication by CAN line and onboard wireless charging ECU200, and the speed of communication can be set to 250kbps.Battery manager 300 sends battery status information to onboard wireless charging ECU200 in real time, and when onboard wireless charging ECU200 fault, battery manager 300 receives the fault-signal that onboard wireless charging ECU200 sends, and stops wireless charging.
Power Environment Monitoring Network is mainly the communication network between on-board high-voltage device.When wireless charging carries out, the speed of a motor vehicle is zero, and car load is in N shelves or P shelves.Battery manager 300 sends wireless charging signal to other high-tension apparatuses, to coordinate the carrying out of wireless charging.For example, to electric machine controller transmitted signal, forbid power of motor output.
If comfortable host's battery manager 300 is to the communication network between instrument 700, so that display radio charging index signal in instrument 700, instrument wireless charging switching signal sends to battery manager by instrument 700, as startup and the stop signal of wireless charging.
Fig. 4 is for carrying out the control flow of the charging preparatory stage of wireless charging to electric automobile.
Step S401, car load high pressure powers on.
Step S402, electric motor car travel static to charging platform after, electric automobile is searched platform wireless charging device signal.
Step S403, whether onboard wireless charging ECU detects platform wireless charging device signal.
Step S404, waits for that whether surpassing 30S does not also examine and arrive, and if not, performs step S405, if so, performs step S412.
Step S405, onboard wireless charging ECU sends wireless charging request signal to battery manager.
Particularly, under normal circumstances: high-tension electricity on car load, battery manager detects the gear signal of the current electric automobile that on Power Environment Monitoring Network, gear controller sends, if it is P shelves or N shelves that battery manager detects current gear signal, battery manager sends to the wireless charging ECU on car the signal of starting working by the onboard wireless net that charges, near the identification signal that whether wireless charging ECU has wireless charging device to send 1S detects electric automobile, if wireless charging device identification signal do not detected in 30S, wireless charging ECU quits work.If there is wireless charging device identification signal near detecting, by onboard wireless, charge net to the request of battery manager transmission wireless charging.
Step S406, battery manager detects vehicle mounted dynamic battery SOC and whether is greater than 95%.
Battery manager receives after the charging request signal of wireless charging ECU transmission, first detect the SOC(dump energy of vehicle mounted dynamic battery) whether be greater than 95%, as dump energy is greater than 95%, battery manager does not respond the charging request of wireless charging ECU, forbids wireless charging.If battery dump energy is less than 95%, battery manager detects vehicle mounted dynamic battery and whether has fault, comprise that electrokinetic cell monomer temperature is too high, electrokinetic cell monomer voltage is too high, the fault such as electrokinetic cell electric leakage, the disconnection of electrokinetic cell sample line, battery manager and battery information collector communication failures, if there is above-mentioned fault, forbid wireless charging.Battery manager sends alarm signal to instrument by gateway, and instrument shows forbids wireless charging.
At battery manager duration of work, battery information collector gathers voltage and the temperature information of vehicle mounted dynamic battery always, and by battery subnet, battery information is sent to battery manager.When battery cell ceiling voltage or maximum temperature are higher than set point, and lasting 50 voltages or temperature sampling result all exist extremely, battery manager confirms that electrokinetic cell exists fault, and to instrument, send fault-signal by gateway, by onboard wireless, charge net to wireless charging ECU transmission charging termination information, by hard signal, to distribution box transmission level control signal, controller internal wireless charging contactor disconnects, and wireless charging finishes.
Step S407, judges whether electrokinetic cell exists fault, if so, performs step S408, otherwise execution step S749.
Step S408, instrument shows electrokinetic cell fault, then performs step S412.
Step S409, battery manager sends a signal to instrument, and whether instrument prompting user needs wireless charging.
Step S410, judges whether user presses wireless charging switch, if so, performs step S413, otherwise execution step S411.
Step S411, waits for and whether surpasses 30S, if so, perform step S412, otherwise return to step S409.
Step S412, forbids wireless charging.
Step S413, wireless charging ECU records VIN code and the electric automobile information of electric automobile, and sends to transmitting end equipment.
Step S414, transmitting end equipment identification electric automobile identity information.
Step S415, transmitting end equipment obtains electric automobile identity information, and sends to master server.
Step S416, master server takes a decision as to whether registered user, if so, performs step S420, otherwise execution step S417.
Step S417, sends authentication failed information to transmitting end equipment.
Step S418, transmitting terminal sends forbids that wireless charging signal is to the onboard wireless ECU that charges, wireless charging finishes.
Step S419, instrument prompting " this electric automobile is without charging authority ".
Step S420, transmitting terminal wireless charging is ready.
Step S421, battery manager is controlled adhesive wireless charging preliminary filling contactor.
Step S422, judges whether pre-charge pressure reaches within the scope of electrokinetic cell voltage swing ± 50V, i.e. adhesive wireless charging contactor disconnect preliminary filling contactor
Step S423, disconnection of wireless charging preliminary filling contactor, forbids charging.
Step S424, enters wireless charging flow process.
Particularly, if the electrokinetic cell fault-free that battery manager 300 detects, battery manager 300 sends charging permission signal to instrument 700, and whether instrument 700 prompting users need to carry out wireless charging.If, after 30S, user does not press the wireless charging button on instrument desk after instrument prompting wireless charging request signal, wireless charging is forbidden in instrument demonstration.If user presses wireless charging button, battery manager 300 detects after switching signal, and wireless charging ECU200 records electric automobile VIN code and the number-plate number, and sends to transmitting end equipment 100.Transmitting end equipment 100 on charging station sends to master server 900 electric automobile VIN code and license plate number information, master server 900 determines whether registered user, if registered user, send authentication successful information to platform transmitting end equipment 100, platform transmitting end equipment 100 is prepared to electric motor car wireless charging receiving device 200 electric energy transmittings, and record charge capacity, if not registered user, master server 900 sends authentication failure information to platform transmitting end equipment 100.Transmitting end equipment on charging station sends forbids that wireless charging signal, to the onboard wireless ECU that charges, forbids charging, instrument prompting " this electric automobile is without charging authority ".
If electric automobile is by authentication, battery manager 300 transmits control signal to high-tension distribution box, controls the adhesive of wireless charging preliminary filling contactor.After preliminary filling finishes, if pre-charge pressure is within the scope of electrokinetic cell voltage ± 50V, be adhesive wireless charging contactor disconnection of wireless charging preliminary filling contactor, battery manager 300 sends a signal to instrument 700, instrument display radio charging indicator light, enters wireless charging flow process.If pre-charge pressure is undesirable, battery manager 300 is controlled the disconnection of wireless charging preliminary filling contactor, forbids charging.Wireless charging preliminary filling contactor refers to the contactor that is arranged on distribution box inside, and main effect is to burn out while preventing the adhesive of wireless charging contactor.Wireless charging contactor refers to and is arranged on distribution box inside, and its effect is the switch as the high-tension circuit part of onboard wireless charging ECU200.
Fig. 5 is for carrying out the control flow chart in wireless charging stage to electric automobile.
Step S501, enters wireless charging flow process.
Step S502, battery manager 300 transmission battery informations and charge power request are to wireless charging ECU200.
Battery manager 300 transmission battery informations and current charging demand power are to wireless charging ECU200.Battery information comprises electrokinetic cell current residual electric weight, charging current, the highest single battery voltage of charge power, minimum single battery voltage, the highest single battery temperature, minimum single battery temperature, and electrokinetic cell fault message.
Step S503, wireless charging ECU200 sends battery information to charging station transmitting end equipment.
Step S504, the output of platform transmitting end equipment regulating power.
Step S505, wireless charging ECU200 detects the ruuning situation of wireless charging device.
Particularly, wireless charging ECU200 sends to the wireless charging device 100 on platform by battery information and power demand.The 100 regulating power outputs of charging platform transmitting end equipment, wireless charging ECU200 receives the energy that transmitting end equipment 100 transmits, and gives vehicle mounted dynamic battery 402 chargings.
Step S506, judges that whether mains supply is abnormal, if so, performs step S508, otherwise execution step S507.
Step S507, judges whether fault of transmitting end equipment, if so, performs step S508, otherwise execution step S509.
Step S508, stops wireless charging, instrument display radio charging device fault message.
Step S509, judges whether output abnormality of wireless charging ECU, if so, performs step S508, otherwise execution step S510.
Step S510, judges whether communication failure of wireless charging ECU, if so, performs step S508, otherwise execution step S511.
Step S511, battery manager detects vehicle-mounted power battery information.
Step S512, judges that whether temperature of powered cell is too high, if so, performs step S514, otherwise execution step S513.
Step S513, judges that whether electrokinetic cell voltage is too high, if so, performs step S514, otherwise execution step S517.
Step S514, determines whether electrokinetic cell general alarm, if so, performs step S515, otherwise execution step S516.
Step S515, battery manager sends limit power charge information, and wireless charging ECU reduces current charge power.
Step S516, stops wireless charging, and instrument shows electrokinetic cell fault message.
Particularly, in wireless charging process, battery manager 300 detects vehicle-mounted power battery information always, and the content of detection comprises that whether temperature of powered cell is too high, whether electrokinetic cell voltage is too high, whether charging current is excessive, whether battery information collector exists fault.Temperature of powered cell is too high, electrokinetic cell overtension and charging current are crossed major break down and should a minute situation be processed, and can be divided into level fault and secondary failure.When there is level fault (general alarm), battery manager 300 sends limit power charge information to wireless charging ECU, and wireless charging ECU sends fault message to transmitting end equipment, limits power charging.If there is secondary failure (seriously reporting to the police), or battery information collector fault, battery manager disconnection of wireless charge circuit, wireless charging stops.
Step S517, judges that whether charging current is excessive, if so, performs step S514, otherwise execution step S518.
In wireless charging process, whether battery manager 300 detects batteries and has charged, and when battery charge state SOC is 100%, or user presses wireless charging button, and wireless charging completes.When charging finishes, battery manager 300 transmits control signal to high-tension distribution box, disconnection of wireless charging contactor.Meanwhile, battery manager 300 sends and has charged information to wireless charging ECU, and ECU sends charging completion signal again to transmitting end equipment, and transmitting end equipment 100 stops the transmitting energy to wireless charging ECU.
Step S518, judges whether fault of battery information collector, if so, performs step S514, otherwise execution step S519.
In wireless charging process, battery manager 300 1 is straight through detecting power battery charging electric current and gathering electrokinetic cell voltage, calculate power battery charging electric weight, and send to wireless charging ECU, wireless charging ECU sends charge capacity information to battery manager 300.Battery manager 300 is sending charge capacity signal to instrument, so that show.
Step S519, judges whether user presses wireless charging switch, if so, performs step S521, otherwise execution step S520.
Step S520, battery manager 300 judges whether wireless charging completes, and if so, performs step S521, otherwise execution step S503.In wireless charging process, electric automobile does not respond gear switch, and battery manager 300 sends wireless charging state information to electric machine controller, the output of motor inactivity.After wireless charging finishes, battery manager 300 sends charging ending message to electric machine controller, allows electric automobile normally to travel.
In addition, in charging process, charging device need to have monitoring and defencive function, and the abnormal conditions that whole system is occurred are processed.Wireless charging mode also needs the criterion of clearly having charged, to prevent battery overcharge in electric motor car.
Below with reference to Fig. 6 to Figure 11, describe according to the wireless charging detection system for electric automobile of the embodiment of the present invention.The wireless charging detection system of the embodiment of the present invention is a kind of feasible with the electric motor car wireless charging scheme of improving measuring ability, is mainly used in the wireless charging of the electrokinetic cell on pure electric vehicle or mixed power electric car.
As Fig. 6 shows, the wireless charging detection system 1000 for electric automobile of the embodiment of the present invention comprises: electric energy generator 100, electric energy receiving system 200 and battery manager 300.
Particularly, electric energy generator 100 is connected with charging station, and electric energy receiving system 200 and battery manager 300 are positioned on electric automobile.
Electric energy generator 100 is for utilizing electromagnetic induction to electric energy receiving system 200 electric energy transmittings.Wherein, electric energy generator comprises: transmitting coil 104, the first current Hall transducer 151, the first sampling resistor 181 and first time inspection coil 171.Wherein, transmitting coil 104 is for being transmitted into electric energy receiving system 200 by alternating current with the form of electromagnetic field.The first current Hall transducer 151 is connected with transmitting coil 104, carries the current status of the wireless charging major loop of generator 100 1 sides for monitoring electric energy.First time inspection coil 171 is connected with the first sampling resistor 181, for monitoring the pressure drop of the first sampling resistor 181, and judges that according to the pressure drop of the first sampling resistor 181 whether electric energy generator 100 is abnormal.It should be noted that, electric energy generator 100 is charging platform transmitting end equipment.
In addition, electric energy generator 100 also comprises: the first temperature sensor.Wherein, the first temperature sensor is arranged at transmitting coil one side, for detection of the temperature of transmitting coil in wireless charging process.
Electric energy receiving system 200 is positioned on electric automobile, further transfers to the vehicle mounted dynamic battery 402 of electric automobile for the electric energy that electric energy generator 100 is provided.And electric energy receiving system 200 can carry out in real time self check after entering wireless charging flow process, if detected, there is fault, to battery manager 300, send fault-signal.In one embodiment of the invention, electric energy receiving system 200 can be wireless charging ECU.
200 pairs of following contents of electric energy receiving system detect: whether mains supply abnormal, electric energy generator 100 whether output abnormality and communication failure whether of fault, electric energy receiving system 200 whether.
The wireless charging ECU of usining is below described as electric energy receiving system.Whether wireless charging ECU200 detects wireless charging device always and exists extremely in the process of charging, the content of detection comprise mains supply extremely, transmitting end equipment fault, wireless charging ECU output abnormality and wireless charging ECU communication failure etc.Only have when above-mentioned testing result is normally, during fault-free, can judge that wireless charging device is normal.Wherein mains supply refers to grid power blackout, electrical network output voltage shakiness extremely.Abnormal and the transmitting end equipment fault message of mains supply is all to send to the onboard wireless ECU200 that charges by platform wireless charging device 100.If there are as above various faults, wireless charging ECU200 sends charging termination request signal to battery manager 300.Battery manager 300 receives disconnection of wireless charging contactor after this information, stops wireless charging, and sends charge fault signal to instrument, instrument display radio charging device fault.Wireless charging ECU200 output is different is mainly that the direct voltage of showing vehicle mounted dynamic battery 402 outputs occurs extremely, can be at a voltage hall sensor of DC output end configuration of wireless charging ECU, and whether Real-Time Monitoring output voltage exists extremely.Wireless charging ECU judges whether to occur communication failure in the following manner: wireless charging ECU regularly sends message to platform transmitting end equipment 100 and battery manager 300, platform transmitting end equipment 100 and battery manager 300 can be to wireless charging ECU200 feedback responses after receiving above-mentioned message, if wireless charging ECU200 does not receive feedback response or do not send message in default duration, judge wireless charging ECU200 communication failure.
In one embodiment of the invention, electric energy receiving system 200 comprises: receiving coil 201, the second current Hall transducer 152, the second sampling resistor 182 and second time inspection coil 172.
Particularly, receiving coil 201 produces induced current to receive the electric energy from transmitting coil 104 for the alternating magnetic field producing at transmitting coil 104.The second current Hall transducer 152 is connected with receiving coil 201, for monitoring the current status of the wireless charging major loop of electric energy receiving system 200 1 sides.Second time inspection coil 172 is connected with the second sampling resistor 182, for monitoring the pressure drop of the second sampling resistor 182, and judges that according to the pressure drop of the second sampling resistor 182 whether electric energy receiving system 200 is abnormal.
In one embodiment of the invention, electric energy receiving system 200 also comprises the second temperature sensor.The second temperature sensor is arranged at receiving coil one side, for detection of the temperature of the receiving coil in wireless charging flow process.
Battery manager 300 is after the fault-signal receiving from electric energy receiving system 200, and disconnection of wireless charge circuit is to stop wireless charging.
In one embodiment of the invention, battery manager 300 disconnects the wireless charging contactor of electric automobile to stop wireless charging after receiving fault-signal, and sending charge fault signal to the instrument of electric automobile, the instrument of electric automobile shows fault message after receiving charge fault signal.
In sum, when wireless charging power supply grid is normally worked, if electrokinetic cell fault-free, battery manager 300 has charge power request, after onboard wireless charging ECU200 self check is errorless, can forward charge power solicited message to platform wireless charging transmitting end equipment 100.If transmitting end equipment 100 is working properly, return inspection coil sides and can produce induced current, on sampling resistor, can produce pressure drop, can judge whether transmitting end equipment 100 normally works by detecting the pressure drop of sampling resistor.Detection principle and the transmitting end equipment of receiving device are similar.On transmitting end equipment and receiving device major loop, dispose current Hall transducer, for the current conditions of Real-Time Monitoring charging major loop.When in loop, electric current is greater than set point, battery manager 300 is controlled the wireless charging contactor disconnecting in distribution box, and wireless charging finishes, and instrument can show charge fault information.Transmitting coil 104 and receiving coil 201 sides are provided with temperature sensor, due to transmitting coil in monitoring wireless charging process will with the working temperature of receiving coil.When coil working temperature surpasses set point, battery manager is controlled disconnection of wireless charging contactor, and instrument shows charging device fault.The information of the temperature of transmitting coil 104, electric current and sampling resistor is detected by transmitting end equipment 100, and the information of the temperature of receiving coil 201, electric current and sampling resistor is detected by wireless charging ECU200.Battery manager 300 obtains fault message by communication network, and carries out respective handling.
In one embodiment of the invention, as shown in Figure 7, the wireless charging detection system of the embodiment of the present invention also comprises: a plurality of battery temperature sensor and a plurality of battery information collector 140.Battery information collector 140 is by temperature sensor and voltage detecting line and battery modules company, there are a plurality of battery cells battery modules inside, in order to ensure the cell safety in carrying out wireless charging process, can extremely draw a voltage sample line from each batteries monomer positive and negative, to reach the object of each batteries voltage of real-time detection.Wherein, each battery temperature sensor is for detection of the temperature of the lug between two battery cells in a battery modules of electric automobile.Wherein, the temperature that the temperature of each battery cell in two battery cells is lug.Particularly, optionally get temperature on battery cell lug as battery cell temperature, because lug between battery cell is interconnective, so every two batteries are chosen a lug as monitoring temperature object, can realize the object that temperature sensor reduces by half.4 battery cells only need 2 temperature sensors to detect the temperature detection that can realize each batteries monomer.Battery information collector 140 sends to battery manager 300 by battery subnet information after cell voltage and temperature information collection are completed, and by battery manager 300, does respective handling.
Each battery cell in a battery modules of each battery information collector 140 and electric automobile is connected.And each battery cell in a battery modules of each battery information collector and electric automobile is connected.And each battery information collector is also connected with battery manager 300 with each the battery temperature temperature sensor in corresponding battery modules.Each battery information collector 140 is for the battery temperature of the battery cell that gathers battery temperature sensor and detect and the cell voltage collecting by voltage detecting line, and battery temperature and cell voltage are sent to battery manager 300.
In one embodiment of the invention, battery manager 300 received battery temperature and cell voltage before wireless charging flow process starts, judge in following condition and whether meet, if so, carry out electric automobile to carry out wireless charging: battery temperature lower than preset temperature value and cell voltage whether lower than predeterminated voltage value.
In another embodiment of the present invention, battery manager 300 receives battery temperature and cell voltage in wireless charging flow process, first judge whether the maximum temperature in battery temperature is greater than the first preset temperature threshold value and continues the first default duration, or whether the ceiling voltage in cell voltage is greater than the first predetermined voltage threshold and continues the first default duration, if it is battery manager 300 sends generic failure information to electric energy receiving system 200, and when battery manager 300 detect maximum temperature in battery temperature less than or equal to the ceiling voltage in the second preset temperature threshold value and cell voltage less than or equal to the second predetermined voltage threshold, battery manager 300 sends trouble shooting information to electric energy receiving system 200, charge power is returned to normal value.
In some embodiments of the invention, whether the maximum temperature of battery manager 300 in judging battery temperature is greater than the 3rd preset temperature threshold value and continues the second default duration, or whether the ceiling voltage in cell voltage is greater than the 3rd predetermined voltage threshold and continues the second default duration, and if it is battery manager 300 sends catastrophe failure information and forbids electric automobile to carry out wireless charging to electric energy receiving system 200., in instrument, showing electrokinetic cell fault, charging is forbidden.
In one embodiment of the invention, the first duration can be 10 seconds, and the second duration can be 5 seconds.
In order to improve the reliability of system, set the lower limit of battery temperature and voltage, for example battery cell minimum temperature can be set as-40 ℃, and battery cell minimum voltage value is set to 0V.If battery information collector 140 is without collection signal, acquiescence sends lower limit.If the battery temperature value that battery information collector 140 sends is-40 ℃, think that temperature sampling line disconnects, if the battery voltage value that battery information collector 140 sends is 0V, think that voltage sample line disconnects.If battery manager 300 detects above fault message, forbid wireless charging.
In some embodiments of the invention, the wireless charging detection system of the embodiment of the present invention also comprises: electricity leakage sensor.Wherein, electricity leakage sensor is connected with battery manager.In wireless charging process, for car load safety, electricity leakage sensor is installed onboard, to monitor high tension loop, whether there is short circuit, cause car load electric leakage.
As shown in Figure 9 and Figure 10, electricity leakage sensor comprises: equivalent insulation resistance Rx, isolation capacitance C1, the first resistance R 2, voltage detecting circuit 320, waveform generator 310, comparator 330 and processor 340.
Particularly, one end of equivalent insulation resistance Rx is connected with the electrokinetic cell of electric automobile 402, other end ground connection GND.Rx be electrokinetic cell with respect to the equivalent insulation resistance of vehicle body, generally, numerical value is larger.One end of isolation capacitance C1 is connected with equivalent insulation resistance Rx with electrokinetic cell 402, and the other end is connected with the first resistance R 2 with voltage detecting circuit 320.Isolation capacitance C1 is for isolated by electrokinetic cell 402 and waveform generator 310.
One end of the first resistance R 2 is connected with the other end of isolation capacitance C1, the other end ground connection of the first resistance R 2.One end of voltage detecting circuit 320 is connected with the other end of isolation capacitance C1, for detection of first pressure drop of resistance R 2 and the pressure drop of equivalent resistance.Waveform generator 310 is connected with the other end of isolation capacitance C1 by the second resistance R 1, for generating triangular wave to produce pressure drop on equivalent insulation resistance Rx and the first resistance.One end of comparator 330 is connected with the other end of voltage detecting circuit 320, for the pressure drop of equivalent insulation resistance Rx and the first predeterminated voltage comparison value and the second predeterminated voltage comparison value are compared.Processor 340 is connected with the other end of comparator 330, if the pressure drop of the equivalent insulation resistance Rx of comparator 330 judgement is between the first predeterminated voltage and the second predeterminated voltage, there is general electric leakage in processor 330 judgements, if the pressure drop of the equivalent insulation resistance Rx of comparator 330 judgement is less than the second predeterminated voltage, there is serious electric leakage in processor 330 judgements, and processor 340 sends to battery manager 300 by electric leakage information.
The pressure drop Ux of usining in the first resistance R 2 is as monitor value.What waveform generator 310 produced is triangular waveform, for making the upper generation of the first resistance R 2 and equivalent insulation resistance Rx pressure drop,
When power battery insulation resistance Rx declines, electrokinetic cell 402 reduces relatively with respect to the insulation resistance Rx of vehicle body, and Ux declines.Set a critical voltage value, when Ux reaches this set point, electricity leakage sensor is reported to the police, and battery manager 300 handles accordingly.Insulating requirements can be set as secondary, and the first order is general electric leakage, and high-pressure system insulation resistance critical value is 500 Ω/V, and the second level is serious electric leakage, and insulation resistance critical value is 100 Ω/V.Can determine the first predeterminated voltage and the second predeterminated voltage according to these two insulation critical resistances, as judgment basis, can set the first predeterminated voltage and be greater than the second predeterminated voltage.Pressure drop on equivalence insulation resistance Rx is after overvoltage detection circuit 320, convert direct current effective voltage to, compare with the magnitude of voltage of setting, if the magnitude of voltage detecting is less than the first predeterminated voltage while being greater than the second predeterminated voltage, processing unit 340 is judged to be general electric leakage, when if the voltage detecting is less than the second predeterminated voltage, processing unit 340 is judged to be serious electric leakage.Electricity leakage sensor sends to battery manager 300 by electric leakage information, and 300 pairs of wireless charging systems of battery manager carry out earth leakage protective, and when general electric leakage, the charging of limit power, when serious electric leakage, stops wireless charging.
Figure 11 is the control flow chart of the wireless charging detection system of the embodiment of the present invention.It is the safety detection flow process of system while carrying out wireless charging that Figure 11 shows, and comprises on-vehicle battery temperature detection, voltage detecting, voltage sample line burn out detection, temperature sampling line burn out detection, high-pressure system insulating monitoring, transmitting end equipment detection, receiving device detection, current monitoring, wireless charging ECU fault etc.When wireless charging starts and in process, as long as break down, wireless charging system can be processed according to fault message.
Step S1101, battery information collector gathers battery information.
Step S1102, battery manager receives battery information.
Step S1103, battery manager judges whether that according to the battery information receiving having the magnitude of voltage of battery cell is 0V, if had, performs step S1104, otherwise execution step S1105.
Step S1104, voltage sample line fault, battery manager 300 is forbidden wireless charging.
Step S1105, judges whether to exist the temperature of battery cell to be-40 ℃, if so, performs step S1106, otherwise execution step S1107.
Step S1106, temperature sampling line fault, battery manager 300 is forbidden wireless charging.
Step S1107, judges whether single battery maximum temperature surpasses 70 ℃, and continues 5 seconds, if so, performs step S1108, otherwise execution step S1109.
Step S1108, battery manager is controlled disconnection of wireless charging contactor, and instrument shows high-pressure system electric leakage information.
Step S1109, judges whether single battery ceiling voltage surpasses 4.1V, and continues 5 seconds, if so, performs step S1108, otherwise execution step S1110.
Step S1110, judges whether wireless charging high-pressure system insulating resistance value is less than 100 Ω/V, if so, performs step S1111, otherwise execution step S1113.
Step S1111, high-pressure system is seriously leaked electricity.
Step S1112, battery manager is controlled disconnection of wireless charging contactor, and instrument shows high-pressure system electric leakage information.
Step S1113, judges whether single battery maximum temperature surpasses 60 ℃, and continues 10 seconds, if so, performs step S1114, otherwise execution step S1115.
Step S1114, battery manager sends limit power charge information, and wireless charging ECU receives after this information, reduces charge power.
Step S1115, judges whether single battery ceiling voltage surpasses 3.8V, and continues 10 seconds, if so, performs step S1114, otherwise execution step S1116.
Step S1116, judges whether wireless charging high-pressure system insulating resistance value is less than 500 Ω/V, if so, performs step S1114, otherwise execution step S1117.
Step S1117, vehicle mounted dynamic battery is normal.
Step S1118, judges whether fault of transmitting end equipment, if so, performs step S1119, otherwise execution step S1120.
Step S1119, wireless charging stops, and transmitting end equipment sends fault message.
Step S1120, judges whether fault of receiving device, if so, performs step S1121, otherwise execution step S1122.
Step S1121, wireless charging stops, and receiving device sends fault message.
Step S1122, judges that whether charging current is excessive, if so, performs step S1123, otherwise execution step S1124.
Step S1123, wireless charging stops, and receiving device sends fault message.
Step S1124, judges whether fault of wireless charging ECU, if so, performs step S1125, otherwise execution step S1126.
Step S1125, wireless charging stops, and wireless charging ECU sends fault message.
Step S1126, wireless charging system is normal.
According to the wireless charging detection system for electric automobile of the embodiment of the present invention, can improve the safety and reliability of electric motor car when charging.The detection of the wireless charging detection system for electric automobile of the embodiment of the present invention comprises the multiple detections such as on-vehicle battery temperature detection, voltage detecting, voltage sample line burn out detection, temperature sampling line burn out detection, high-pressure system insulating monitoring, transmitting end equipment detection, receiving device detection, current monitoring, wireless charging ECU fault, has higher fail safe.When charging starts and in process, as long as break down, wireless charging system can be processed according to fault message.In addition, the wireless charging detection system of the employing embodiment of the present invention is convenient to the maintenance of wireless charging system, is convenient to find out failure cause, to after-sales service, provides convenience.The useful life that the wireless charging detection system of the employing embodiment of the present invention can also improve wireless charging system.
Wireless charging detection system for electric automobile of the present invention provides a kind of feasible wireless charging monitoring and safety shield, can real wireless charging system intelligent monitoring.In wireless charging process, the important parameter of Real-time Collection wireless charging system, and judge in system whether have fault according to system parameters, handle accordingly.In case of emergency, platform masters also can be pressed the danger button emergent stopping wireless charging on charging station control desk.The present invention has reduced the safety issue of the wired charging modes of electric motor car widely, makes that charging device reliability is higher, longer service life, can meet client in the requirement to electric motor car charging.And the present invention, by electromagnetic coupled mode, charges the battery, and charge efficiency is high, practical.
In flow chart or any process of otherwise describing at this or method describe and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of the step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
The logic and/or the step that in flow chart, represent or otherwise describe at this, for example, can be considered to for realizing the sequencing list of the executable instruction of logic function, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise that the system of processor or other can and carry out the system of instruction from instruction execution system, device or equipment instruction fetch), use, or use in conjunction with these instruction execution systems, device or equipment.With regard to this specification, " computer-readable medium " can be anyly can comprise, storage, communication, propagation or transmission procedure be for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically of computer-readable medium (non-exhaustive list) comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random-access memory (ram), read-only memory (ROM), the erasable read-only memory (EPROM or flash memory) of editing, fiber device, and portable optic disk read-only memory (CDROM).In addition, computer-readable medium can be even paper or other the suitable medium that can print described program thereon, because can be for example by paper or other media be carried out to optical scanner, then edit, decipher or process in electronics mode and obtain described program with other suitable methods if desired, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, a plurality of steps or method can realize with being stored in memory and by software or the firmware of suitable instruction execution system execution.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: have for data-signal being realized to the discrete logic of the logic gates of logic function, the application-specific integrated circuit (ASIC) with suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is to come the hardware that instruction is relevant to complete by program, described program can be stored in a kind of computer-readable recording medium, this program, when carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module usings that the form of software function module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.

Claims (12)

1. the wireless charging detection system for electric automobile, it is characterized in that, comprise: electric energy generator, electric energy receiving system and battery manager, wherein said electric energy generator is connected with described charging station, described electric energy receiving system and described battery manager are positioned on described electric automobile
Described electric energy generator is used for utilizing electromagnetic induction to described electric energy receiving system electric energy transmitting;
Described electric energy receiving system, described electric energy receiving system is positioned on described electric automobile, for the electric energy that described electric energy generator is provided, further transfer to the vehicle mounted dynamic battery of described electric automobile, and after entering wireless charging flow process, carry out in real time self check, if detected, there is fault, to described battery manager, send fault-signal;
Described battery manager, for disconnecting described wireless charging loop to stop wireless charging after receiving described fault-signal.
2. wireless charging detection system as claimed in claim 1, it is characterized in that, described electric energy receiving system detects following content: whether whether abnormal, the described electric energy generator of mains supply whether output abnormality and communication failure whether of fault, described electric energy receiving system.
3. wireless charging detection system as claimed in claim 1, is characterized in that, described electric energy generator comprises:
Transmitting coil, for being emitted to described electric energy receiving system by alternating current with the form of electromagnetic field;
The first current Hall transducer, described the first current Hall transducer is connected with described transmitting coil, for monitoring the current status of charging major loop;
The first sampling resistor;
First time inspection coil, described first time inspection coil is connected with described the first sampling resistor, for monitoring the pressure drop of described the first sampling resistor, and judges that according to the pressure drop of described the first sampling resistor whether described electric energy generator is abnormal.
4. wireless charging detection system as claimed in claim 3, it is characterized in that, described electric energy generator also comprises: the first temperature sensor, described the first temperature sensor is arranged at described transmitting coil one side, for detection of the temperature of transmitting coil in wireless charging flow process.
5. wireless charging detection system as claimed in claim 3, is characterized in that, described electric energy receiving system comprises:
Receiving coil, produces induced current to receive the electric energy from described transmitting coil for the alternating magnetic field producing at described transmitting coil;
The second current Hall transducer, described the second current Hall transducer is connected with described receiving coil, for monitoring the current status of charging major loop;
The second sampling resistor;
Second time inspection coil, described second time inspection coil is connected with described the second sampling resistor, for monitoring the pressure drop of described the second sampling resistor, and judges that according to the pressure drop of described the second sampling resistor whether described electric energy receiving system is abnormal.
6. wireless charging detection system as claimed in claim 5, it is characterized in that, described electric energy receiving system also comprises: the second temperature sensor, described the second temperature sensor is arranged at described receiving coil one side, for detection of the temperature of receiving coil in wireless charging flow process.
7. wireless charging detection system as claimed in claim 1, it is characterized in that, described battery manager disconnects the wireless charging contactor of described electric automobile to stop wireless charging after receiving described fault-signal, and send charge fault signal to the instrument of described electric automobile, the instrument of described electric automobile, after receiving described charge fault signal, shows fault message.
8. wireless charging detection system as claimed in claim 1, is characterized in that, also comprises:
A plurality of battery temperature sensor, wherein, described in each, battery temperature sensor is for detection of the temperature of the lug between two battery cells in a battery modules of described electric automobile, wherein, and the temperature that the temperature of each battery cell in described two battery cells is lug;
A plurality of battery information collectors, wherein, each battery cell described in each in a battery modules of battery information collector and described electric automobile is connected, and, each battery information collector is also connected with battery manager with each battery temperature sensor in corresponding described battery modules, for gathering the battery temperature of the described battery cell that described battery temperature sensor detects and the cell voltage collecting by voltage detecting line, and described battery temperature and cell voltage are sent to described battery manager.
9. wireless charging detection system as claimed in claim 8, it is characterized in that, described battery manager received described battery temperature and cell voltage before wireless charging flow process starts, judge whether following condition meets, if, carry out described electric automobile to carry out wireless charging: described battery temperature is lower than preset temperature value, and described cell voltage is lower than predeterminated voltage value.
10. wireless charging detection system as claimed in claim 8, it is characterized in that, described battery manager receives described battery temperature and cell voltage in wireless charging flow process, first judge whether the maximum temperature in described battery temperature is greater than the first preset temperature threshold value and continues the first default duration, or whether the ceiling voltage in described cell voltage is greater than the first predetermined voltage threshold and continues the described first default duration, if, described battery manager sends generic failure information to described electric energy receiving system, and when described battery manager detect maximum temperature in battery temperature less than or equal to the ceiling voltage in the second preset temperature threshold value and described cell voltage less than or equal to the second predetermined voltage threshold, described battery manager sends trouble shooting information to described electric energy receiving system.
11. wireless charging detection systems as described in claim 9 or 10, it is characterized in that, whether the maximum temperature of described battery manager in judging described battery temperature is greater than the 3rd preset temperature threshold value and continues the second default duration, or whether the ceiling voltage in described cell voltage is greater than the 3rd predetermined voltage threshold and continues the described second default duration, if so, described battery manager sends catastrophe failure information and forbids described electric automobile to carry out wireless charging to described electric energy receiving system.
12. wireless charging detection systems as claimed in claim 1, is characterized in that, also comprise: electricity leakage sensor, and described electricity leakage sensor is connected with described battery manager, and wherein, described electricity leakage sensor comprises:
Equivalence insulation resistance, one end of described equivalent insulation resistance is connected with the electrokinetic cell of described electric automobile, other end ground connection;
Isolation capacitance, one end of described isolation capacitance is connected with described equivalent insulation resistance with described electrokinetic cell;
The first resistance, one end of described the first resistance is connected with the other end of described isolation capacitance, the other end ground connection of described the first resistance;
Voltage detecting circuit, one end of described voltage detecting circuit is connected with the other end of described isolation capacitance, for detection of the pressure drop of described the first resistance and the pressure drop of described equivalent resistance;
Waveform generator, described waveform generator is connected with the other end of described isolation capacitance by the second resistance, for generating triangular wave to produce pressure drop on described equivalent insulation resistance and described the first resistance;
Comparator, one end of described comparator is connected with the other end of described voltage detecting circuit, for the pressure drop of described equivalent insulation resistance and the first predeterminated voltage comparison value and the second predeterminated voltage comparison value are compared;
Processor, described processor is connected with the other end of described comparator, if the pressure drop of the described equivalent insulation resistance of described comparator judgement is between described the first predeterminated voltage and described the second predeterminated voltage, there is general electric leakage in described processor judgement, if the pressure drop of the described equivalent insulation resistance of described comparator judgement is less than described the second predeterminated voltage, there is serious electric leakage in described processor judgement, and described processor sends to described battery manager by electric leakage information.
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