CN103094959A - Portable automatic electric car charging box and arranging and running method thereof - Google Patents
Portable automatic electric car charging box and arranging and running method thereof Download PDFInfo
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Abstract
The invention discloses a portable automatic electric car charging box and an arranging and running method thereof. The charging box comprises a power supply plug, an electricity box and more than one charging cables, wherein one end of each cable extends out of the electricity box, a charging port is positioned at the other end of each cable. A circuit control system of the electricity box comprises a main control module and a peripheral circuit module connected with the main control module. The peripheral circuit module comprises an input protection switch module, an output control module and a charging port module, wherein the input protection switch module is connected with a power line, the input protection switch module is provided with a breaker with electric leakage protection, and the output control module is connected with the cables and is provide with contactor units corresponding to all cables. The charging box is convenient to carry, can be installed at places of family garages, parking lots, public places and the like where power supply ports are provided, brings convenience to timely charging of electric cars, can serve as base supporting facility in electric car industry and is favorable for electric cars to be popularized and applied.
Description
Technical field
The present invention relates to charging electric vehicle box technology field, more particularly, relate to a kind of electric automobile automatic charging case.
Background technology
Current, along with energy and environment become Present Global problems of concern the most, the electric automobile as traffic transition, green traffic important carrier has obtained extensive concern and the great attention of countries in the world.China planned major scientific and technological project since 2000, promote the development of the new-energy automobile industry of the types such as hybrid vehicle, pure electric automobile and fuel cell car, at present, the application of the energy-conservation and new-energy automobile more than thousand is being carried out in existing 13 cities, the whole nation.Recoverable amount as the electric automobile of new-energy automobile Typical Representative increases gradually, and electrically-charging equipment is as the important foundation auxiliary facility of electric automobile, and its demand will increase increasingly.
In the application of electric automobile, the charging electric vehicle facility is the business-like complete sets of basic equipment facility of electric automobile, its effect is equal to the gas station of present fuel-engined vehicle, only possessed the electrically-charging equipment that function admirable, simple to operate, safe and reliable suitable family expenses are installed, the development of middle-size and small-size ev industry just can further be advanced, the industrialization of electric automobile and popularize just and can better be promoted.
Summary of the invention
Technical purpose of the present invention is to solve middle-size and small-size charging electric vehicle problem easily, and a kind of portable electric vehicle charging electronic box is provided, and can carry out the charging of electric automobile in the place with common power plug.
Technical scheme of the present invention is:
A kind of Portable electric automobile automatic charging case is characterized in that, comprises attaching plug, electronic box and the charging cable more than, and described cable one end stretches out from electronic box, and the other end is provided with charging inlet;
The circuit control system of described electronic box comprises main control module and the peripheral circuit module that is connected with main control module, described peripheral circuit module comprises input protection switch module, output control module and charging inlet module, described input protection switch module is connected with power line, and the input protection switch module is provided with is with earth leakage protective circuit breaker; Described output control module is connected with cable, and corresponding every cable is respectively equipped with a contact unit.
Further technical scheme comprises:
Described main control module is provided with ADC analog sampling interface; Described input protection switch module is provided with current/voltage testing circuit and power-measuring circuit, can pass through current transformer, voltage transformer etc. and gather electric current, voltage signal etc.
The charging inlet of the corresponding every cable of described main control module is respectively equipped with the pwm signal output circuit unit, is used for sending pwm signal to electric automobile CP terminal, does to control and confirms.
Described input protection switch module is provided with the PE monitoring circuit.
The circuit control system of described electronic box is provided with the electronic lock circuit module of control cables pull.
The guidance panel of described electronic box is provided with power supply indicator, charged state indicator light, controls the emergency stop push button that stops charge button and control charging case way circuit of single charging inlet.
A kind of Portable electric automobile automatic charging case operation method is set, it is characterized in that, described charging case is provided with attaching plug, electronic box, cable and charging inlet, and the circuit control system of described electronic box comprises main control module and the peripheral circuit module that is connected with main control module:
1) described main control module is used for sending control command and controls the realization of steering circuit, the running status of managing peripheral circuit module and each parts of watch-dog, and described main control module is provided with:
ADC analog sampling interface, current signal or the voltage signal of collection peripheral circuit;
The pwm signal output circuit sends pwm signal to electric automobile CP terminal, does to control and confirms;
2) described peripheral circuit module comprises input protection switch module, output control module and charging inlet module:
Described input protection switch module is connected with power line, is provided with to be with earth leakage protective circuit breaker, PE monitoring circuit and current/voltage testing circuit and power-measuring circuit;
The corresponding every cable of described output control module is respectively equipped with contact unit, realizes the charging of cable interface is controlled by contactor, detects in real time the attracting state of contactor by the contactor auxiliary contact, and sends testing result to main control module.
The circuit control system of described electronic box can arrange the electronic lock circuit module of control cables pull, automatically locks cable when electronic box charges; When stopping charging, the release cable; In the situation that the charging case power failure, the automatic unlocking cable.
After energising, the running of charging case of the present invention is as follows:
1) start hardware check, whether judgment means has fault, if the fault of existence, the charging output of halt circuit, on the contrary illustrate electronic box to be in holding state by status indicator lamp, continue next step;
2) main control module judgement charge mode arranges the charging strategy;
When being provided with a plurality of charging inlet, if single-phase charge mode, charging inlet is not worked simultaneously, after main control module checks the charging inlet connection status, determines the charging sequence, and charging inlet is worked in order successively; If the three-phase charge mode, charging inlet can not be subject to the above restrictions, and simultaneously a plurality of electric automobiles is charged, and continues next step;
3) main control module reads the leakage current value of PE monitoring circuit, and whether judgment device reliable ground, is fault if having, otherwise continues next step;
4) main control module reads the contactor attracting state, judges whether unanimously with the instruction that provides, and is fault if not, otherwise continues next step;
5) current value of main control module reading current voltage detecting circuit collection, judge whether electronic box is in the operating state of charging, if not in running order, read the voltage signal values of charging inlet CC terminal, judge whether charging inlet is connected with automobile, if do not connect, get back to the 3rd) step; If connection is arranged, send the pulse of setpoint frequency to the pwm signal output circuit, status indicator lamp signal charging case is in connection status, continues next step; If be in charged state, jump to the 7th) step;
Under the charging inlet connection status, as the configuration electronic lock circuit, main control module sends to electronic lock circuit the order of locking;
6) main control module reads the voltage signal of CP terminal, judges whether vehicle is ready, if not ready, gets back to the 3rd) step; If ready, main control module sends the current limit control impuls to the pwm signal output circuit, delays time several seconds, sends close command to contactor, begins charging, and status indicator lamp signal charging case is in charged state, continues next step;
Whether 7) the current/voltage value that gathers of main control module reading current voltage detecting circuit, decision circuitry overcurrent, if be fault, otherwise continues next step;
8) main control module reads the voltage signal values of charging inlet CC terminal, judges whether charging inlet connects, if be fault without connecting, otherwise continues next step;
9) main control module is according to the current value that current detection circuit reads, and judges whether batteries of electric automobile charges to complete, if charging is completed, indicator light signal charging finishes, and jumps to the
13)Step; If uncharged completing continued next step;
10) main control module stops charge button or emergency stop push button state according to what read, judges whether that someone presses to stop charge button or emergency stop push button, if do not press, gets back to the 3rd) step; If press, continue next step;
11) illustrate charging to finish by indicator light, main control module sends instruction to contactor and disconnects, and stops sending pwm signal, sends unlock command to electronic lock circuit as the configuration electronic lock, and then the wait in several seconds of delaying time gets back to the 3rd) step;
12) the various faults of above-mentioned appearance according to the type of fault, make the malfunction indicator lamp of corresponding charging inlet bright, continue next step;
13) stop sending pwm pulse signal to corresponding electric automobile, send unlock command as the configuration electronic lock to corresponding electronic lock circuit;
14) according to the magnitude of voltage that reads, seek voltage over zero, send instruction to contactor and disconnect.
If the unexpected dead electricity of charging case, and configured electronic lock, can power by super capacitor and send unlock command to all electronic lock circuits.
Beneficial effect of the present invention:
Portable electric automobile charging case involved in the present invention can be set to light small and exquisite casing and carry with car, is installed on the place that private garage, parking lot or commercial location etc. provide power interface, can charge easily.It is several that electronic box can be designed to Portable suitcase, charging pile and wall-hanging charging case etc. by the difference of mounting means.Portable suitcase is fit to carry, conveniently charge at any time in any place of Power Supplies Condition that provides, charging pile is adapted at various parking lots and curb parking position to carry out ground and installs, wall-hangingly be adapted at the fixed buildings such as the space is crowded, periphery has wall and carry out wall hanging and install, as underground parking or garage.Charging case configuration electric leakage, ground connection, overcurrent of the present invention, open circuit etc. detects defencive function; can effectively guarantee the safety of the person and equipment; and by the various states of control module real-time watch device, can realize the automatic control of charging process, make whole charging process safe, easy.
Description of drawings
Fig. 1 is charging case operating board structure schematic diagram of the present invention;
Fig. 2 is the electrical block diagram of charging case of the present invention;
Fig. 3 is the workflow schematic diagram of charging case of the present invention.
Embodiment
In order to illustrate technical scheme of the present invention and technical purpose, below in conjunction with the drawings and the specific embodiments, the present invention is done further introduction.
As shown in Figure 1, a kind of Portable electric automobile automatic charging case is provided with attaching plug, electronic box and three charging cables, and described cable is arranged in order from electronic box and stretches out, and the cable other end is provided with charging gun.
The guidance panel of described electronic box is provided with power supply indicator 1, charged state indicator light, controls the emergency stop push button that stops charge button 2 and control charging case way circuit of single charging inlet.
When power supply indicator 1 is bright, illustrate that electronic box switches on.When red led 6 is bright, illustrate that charging is abnormal, as detect that the charging gun interface is not connected with automobile, charging current is excessive, charging case is abnormal etc., stop charging.
Corresponding every cable also is respectively equipped with one group of independent status indicator lamp and stops charge button 2:
Green status indicator lamp 3 flickers illustrate that charging case is in holding state, are not connected with Rechargeable vehicle;
Green status indicator lamp 3 Chang Liang illustrate that charging case is in holding state, the charging case charging inlet with the Rechargeable vehicle successful connection;
Blue status indicator lamp 4 flickers illustrate that Rechargeable vehicle is ready to, wait to be charged;
Blue status indicator lamp 4 Chang Liang illustrate that charging case is in normal charging condition.
Stop charge button 2 and control for the charge circuit of corresponding charging inlet, when lifting the corresponding circuit button, after the control of disconnection corresponding circuit was guided 500 milliseconds, contact-making switch was opened, the charging cable release.If cable is not drawn out, after 10 seconds, charging cable will again lock and control guiding and again connect, and charging case continues the possible charging process of operation.After lifting emergency stop push button, the contact-making switch in three loops is opened immediately, stops charging and release charging cable.
As shown in Figure 1, three charging guns can connect simultaneously three cars and charge, when charge mode is single-phase type when charging, charging inlet automatically in order one one be that three electric automobiles charge, and three-phase when charging can be that three electric automobiles charge simultaneously.
The charging inlet of vehicle and the charging inlet of electronic box comprise respectively 7 pairs of contacts, and its electric parameter value and function definition are as shown in table 1.
Table 1 contact electric parameter value and function definition
In figure, 5 are the power supply input, are divided into two kinds of situations of single-phase input and three-phase input, input voltage 220V, input maximum current 32A.
The circuit control system of described electronic box comprises main control module and peripheral circuit module:
1) described main control module is used for sending control command and controls the realization of steering circuit, the running status of managing peripheral circuit module and each parts of watch-dog, and described main control module is provided with:
A) ADC analog sampling interface, gather current signal, voltage signal or other signal of peripheral circuit, with the charged state of grasp electronic box and automobile, thereby complete recharge logic, fault monitoring and protection function, realize the automatic control of charging process and the automatic processing of abnormal conditions;
B) pwm signal output circuit sends pwm signal to electric automobile CP terminal, does control to confirm, each charging inlet configures respectively a pwm signal output circuit independently;
2) described peripheral circuit module comprises input protection switch module, output control module and charging inlet module:
A) described input protection switch module is connected with power line; realize power supply control to power end by circuit breaker; fuser belt earth leakage protective; for detection of electrical enclosure whether with the unexpected short circuit of live wire; avoid personal cause danger, electronic box can be tested automatically to the earth leakage protective of circuit breaker before charging.
The input protection switch module also is provided with PE monitoring circuit, current/voltage testing circuit and power-measuring circuit;
B) the corresponding every cable of described output control module is respectively equipped with the contact unit of a correspondence, realize the charging of cable interface is controlled by contactor, detect in real time the attracting state of contactor by the contactor auxiliary contact, send testing result to main control module.
C) described charging inlet module can be according to the charging gun interface of compound GB 20234 standards of the different configuration of area of application charging inlet standard, IEC62196-2, SAE J1772 standard.
D) electronic lock circuit module automatically locks cable when electronic box charges; When stopping charging, the release cable makes cable can carry out pull; In the situation that the charging case power failure, the automatic unlocking cable.
After charging case energising of the present invention, the running of described charging case is as follows:
1) start hardware check, whether judgment means has fault, if the fault of existence, the charging output of halt circuit, on the contrary illustrate electronic box to be in holding state by status indicator lamp, continue next step;
2) main control module judgement charge mode arranges the charging strategy;
When being provided with a plurality of charging inlet, if single-phase charge mode, charging inlet is not worked simultaneously, after main control module checks the charging inlet connection status, determines the charging sequence, and charging inlet is worked in order successively; If the three-phase charge mode, three charging inlets can be worked simultaneously, and complete independently charging flow separately, continue next step separately;
3) main control module reads the leakage current value of PE monitoring circuit, and whether judgment device reliable ground, is fault if having, otherwise continues next step;
4) main control module reads the contactor attracting state, judges whether unanimously with the instruction that provides, and is fault if not, otherwise continues next step;
5) current value of main control module reading current voltage detecting circuit collection, judge whether electronic box is in the operating state of charging, if not in running order, read the voltage signal values of charging inlet CC terminal, judge whether charging inlet connects, if do not connect, get back to the 3rd) step; If connection is arranged, send the pulse of certain frequency (as 1kHZ, duty ratio 5%) to the pwm signal output circuit, status indicator lamp signal charging case is in connection status, continues next step; If be in charged state, jump to the 7th) step;
Under connection status, as the configuration electronic lock circuit, main control module sends to electronic lock circuit the order of locking;
6) main control module reads the voltage signal of CP terminal, judges whether vehicle is ready, if not ready, gets back to the 3rd) step; If ready, main control module sends the current limit control impuls to the pwm signal output circuit, delay time several seconds (as 2-5 second), sends close command to contactor, begins charging, and status indicator lamp illustrates that charging case is in charged state, continues next step;
Whether 7) the current/voltage value that gathers of main control module reading current voltage detecting circuit, decision circuitry overcurrent, if be fault, otherwise continues next step;
8) main control module reads the voltage signal values of charging inlet CC terminal, judges whether charging inlet connects, if be fault without connecting, otherwise continues next step;
9) main control module is according to the current value that current detection circuit reads, and judges whether batteries of electric automobile charges to complete, if charging is completed, indicator light signal charging finishes, and jumps to the 13rd) step; If uncharged completing continued next step;
10) main control module stops charge button or emergency stop push button state according to what read, judges whether that someone presses to stop charge button or emergency stop push button, if do not press, gets back to the 3rd) step; If press, continue next step;
11) illustrate charging to finish by indicator light, main control module sends instruction to contactor and disconnects, and stops sending pwm signal, sends unlock command to electronic lock circuit as the configuration electronic lock, and several seconds (as 2-8 second) of delay time waited for, then get back to the 3rd) go on foot;
12) the various faults of above-mentioned appearance according to the type of fault, make the malfunction indicator lamp of corresponding charging inlet bright, continue next step;
13) stop sending pwm pulse signal to corresponding electric automobile, send unlock command as the configuration electronic lock to corresponding electronic lock circuit;
14) according to the magnitude of voltage that reads, seek voltage over zero, send instruction to contactor and disconnect.
In said process, the unexpected dead electricity of charging case as the configuration electronic lock, is powered by super capacitor and is sent unlock command to all electronic lock circuits.
Above demonstration and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. a Portable electric automobile automatic charging case, is characterized in that, comprises attaching plug, electronic box and the charging cable more than, and described cable one end stretches out from electronic box, and the other end is provided with charging inlet;
The circuit control system of described electronic box comprises main control module and the peripheral circuit module that is connected with main control module, described peripheral circuit module comprises input protection switch module, output control module and charging inlet module, described input protection switch module is connected with power line, and the input protection switch module is provided with is with earth leakage protective circuit breaker; Described output control module is connected with cable, and corresponding every cable is respectively equipped with a contact unit.
2. a kind of Portable electric automobile automatic charging case according to claim 1 is characterized in that:
Described main control module is provided with ADC analog sampling interface;
Described input protection switch module is provided with current/voltage testing circuit and power-measuring circuit.
3. a kind of electric vehicle charging electronic box according to claim 1, is characterized in that, the charging inlet of the corresponding every cable of described main control module is respectively equipped with the pwm signal output circuit unit, is used for sending pwm signal to electric automobile CP terminal, does to control and confirm.
4. a kind of Portable electric automobile automatic charging case according to claim 1, is characterized in that, described input protection switch module is provided with the PE monitoring circuit.
5. the described a kind of Portable electric automobile automatic charging case of arbitrary claim according to claim 1-4, is characterized in that, the circuit control system of described electronic box is provided with the electronic lock circuit module of control cables pull.
6. a kind of Portable electric automobile automatic charging case according to claim 5, it is characterized in that, the guidance panel of described electronic box is provided with power supply indicator, charged state indicator light, controls the emergency stop push button that stops charge button and control charging case way circuit of single charging inlet.
7. a Portable electric automobile automatic charging case arranges operation method, it is characterized in that, described charging case is provided with attaching plug, electronic box, cable and charging inlet, and the circuit control system of described electronic box comprises main control module and the peripheral circuit module that is connected with main control module:
1) described main control module is used for sending control command and controls the realization of steering circuit, the running status of managing peripheral circuit module and each parts of watch-dog, and described main control module is provided with:
ADC analog sampling interface, current signal or the voltage signal of collection peripheral circuit;
The pwm signal output circuit sends pwm signal to electric automobile CP terminal, does to control and confirms;
2) described peripheral circuit module comprises input protection switch module, output control module and charging inlet module:
Described input protection switch module is connected with power line, is provided with to be with earth leakage protective circuit breaker, PE monitoring circuit and current/voltage testing circuit and power-measuring circuit;
The corresponding every cable of described output control module is respectively equipped with contact unit, realizes the charging of cable interface is controlled by contactor, detects in real time the attracting state of contactor by the contactor auxiliary contact, and sends testing result to main control module.
A kind of Portable electric automobile automatic charging case according to claim 7 operation method is set, it is characterized in that:
The circuit control system of described electronic box is provided with the electronic lock circuit module of control cables pull, automatically locks cable when electronic box charges; When stopping charging, the release cable; In the situation that the charging case power failure, the automatic unlocking cable.
According to claim 7 or 8 described a kind of Portable electric automobile automatic charging casees operation method is set, it is characterized in that, after described charging case energising, the running of described charging case is as follows:
1) start hardware check, whether judgment means has fault, if the fault of existence, the charging output of halt circuit, on the contrary illustrate electronic box to be in holding state by status indicator lamp, continue next step;
2) main control module judgement charge mode arranges the charging strategy;
When being provided with a plurality of charging inlet, if single-phase charge mode, charging inlet is not worked simultaneously, after main control module checks the charging inlet connection status, determines the charging sequence, and charging inlet is worked in order successively; If the three-phase charge mode, charging inlet can not be subject to the above restrictions, and continues next step;
3) main control module reads the leakage current value of PE monitoring circuit, and whether judgment device reliable ground, is fault if having, otherwise continues next step;
4) main control module reads the contactor attracting state, judges whether unanimously with the instruction that provides, and is fault if not, otherwise continues next step;
5) current value of main control module reading current voltage detecting circuit collection, judge whether electronic box is in the operating state of charging, if not in running order, read the voltage signal values of charging inlet CC terminal, judge whether charging inlet is connected with automobile, if do not connect, get back to the 3rd) step; If connection is arranged, send the pulse of setpoint frequency to the pwm signal output circuit, status indicator lamp signal charging case is in connection status, continues next step; If be in charged state, jump to the 7th) step;
Under the charging inlet connection status, as the configuration electronic lock circuit, main control module sends to electronic lock circuit the order of locking;
6) main control module reads the voltage signal of CP terminal, judges whether vehicle is ready, if not ready, gets back to the 3rd) step; If ready, main control module sends the current limit control impuls to the pwm signal output circuit, delays time several seconds, sends close command to contactor, begins charging, and status indicator lamp signal charging case is in charged state, continues next step;
Whether 7) the current/voltage value that gathers of main control module reading current voltage detecting circuit, decision circuitry overcurrent, if be fault, otherwise continues next step;
8) main control module reads the voltage signal values of charging inlet CC terminal, judges whether charging inlet connects, if be fault without connecting, otherwise continues next step;
9) main control module is according to the current value that current detection circuit reads, and judges whether batteries of electric automobile charges to complete, if charging is completed, indicator light signal charging finishes, and jumps to the 13rd) step; If uncharged completing continued next step;
10) main control module stops charge button or emergency stop push button state according to what read, judges whether that someone presses to stop charge button or emergency stop push button, if do not press, gets back to the 3rd) step; If press, continue next step;
11) illustrate charging to finish by indicator light, main control module sends instruction to contactor and disconnects, and stops sending pwm signal, sends unlock command to electronic lock circuit as the configuration electronic lock, and then the wait in several seconds of delaying time gets back to the 3rd) step;
12) the various faults of above-mentioned appearance according to the type of fault, make the malfunction indicator lamp of corresponding charging inlet bright, continue next step;
13) stop sending pwm pulse signal to corresponding electric automobile, send unlock command as the configuration electronic lock to corresponding electronic lock circuit;
14) according to the magnitude of voltage that reads, seek voltage over zero, send instruction to contactor and disconnect.
A kind of Portable electric automobile automatic charging case according to claim 9 operation method is set, it is characterized in that:
The unexpected dead electricity of charging case as the configuration electronic lock, is powered by super capacitor and is sent unlock command to all electronic lock circuits.
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| CN105391146A (en) * | 2015-11-26 | 2016-03-09 | 苏州乐啟电动车辆有限公司 | Portable quantifiable electric vehicle charging device |
| CN105811539A (en) * | 2016-05-25 | 2016-07-27 | 江苏帕维电动科技有限公司 | Multi-connector charger for electric vehicles |
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| CN108462369A (en) * | 2018-02-28 | 2018-08-28 | 湖州旭源电气科技有限公司 | A kind of modular high-power high frequency switch power |
| CN111016713A (en) * | 2019-12-27 | 2020-04-17 | 重庆国翰能源发展有限公司 | Control guidance circuit and control guidance method for charging pile |
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| CN104377773B (en) * | 2014-11-20 | 2016-05-18 | 刘同鑫 | A kind of charging case of battery of mobile phone |
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| CN105391146A (en) * | 2015-11-26 | 2016-03-09 | 苏州乐啟电动车辆有限公司 | Portable quantifiable electric vehicle charging device |
| CN105811539A (en) * | 2016-05-25 | 2016-07-27 | 江苏帕维电动科技有限公司 | Multi-connector charger for electric vehicles |
| CN106080232A (en) * | 2016-06-04 | 2016-11-09 | 孙麟声 | Underground garage integrated box charging pile |
| CN105978085A (en) * | 2016-06-16 | 2016-09-28 | 深圳市科陆电子科技股份有限公司 | Alternating current charging gun |
| CN107293912A (en) * | 2016-11-14 | 2017-10-24 | 深圳市奥昇汽车零部件科技有限公司 | A kind of actuating mechanism and its device of the locking system as electric automobile charging pile |
| CN108462369A (en) * | 2018-02-28 | 2018-08-28 | 湖州旭源电气科技有限公司 | A kind of modular high-power high frequency switch power |
| CN111016713A (en) * | 2019-12-27 | 2020-04-17 | 重庆国翰能源发展有限公司 | Control guidance circuit and control guidance method for charging pile |
| CN111016713B (en) * | 2019-12-27 | 2021-06-11 | 重庆国翰能源发展有限公司 | Control guidance circuit and control guidance method for charging pile |
| CN113442758A (en) * | 2019-12-27 | 2021-09-28 | 重庆国翰能源发展有限公司 | Charging pile and charging method for simultaneously conducting guidance switching and power distribution in wireless mode |
| CN113442758B (en) * | 2019-12-27 | 2022-07-12 | 重庆国翰能源发展有限公司 | Charging pile and charging method for simultaneously conducting guidance switching and power distribution in wireless mode |
| CN113665379A (en) * | 2021-08-31 | 2021-11-19 | 中国第一汽车股份有限公司 | Charging conversion system and method for electric automobile |
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