CN112953031A - Power control method and device for static wireless charging system of electric vehicle - Google Patents

Power control method and device for static wireless charging system of electric vehicle Download PDF

Info

Publication number
CN112953031A
CN112953031A CN202110151747.7A CN202110151747A CN112953031A CN 112953031 A CN112953031 A CN 112953031A CN 202110151747 A CN202110151747 A CN 202110151747A CN 112953031 A CN112953031 A CN 112953031A
Authority
CN
China
Prior art keywords
current
end device
wireless charging
vehicle
charging system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110151747.7A
Other languages
Chinese (zh)
Inventor
姚为正
武盾
董晓帅
朱兆芳
冯宇鹏
吴金龙
王林
王先为
刘振威
陈枫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuji Group Co Ltd
State Grid Zhejiang Electric Power Co Ltd
Xuji Power Co Ltd
Original Assignee
Xuji Group Co Ltd
State Grid Zhejiang Electric Power Co Ltd
Xuji Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuji Group Co Ltd, State Grid Zhejiang Electric Power Co Ltd, Xuji Power Co Ltd filed Critical Xuji Group Co Ltd
Priority to CN202110151747.7A priority Critical patent/CN112953031A/en
Publication of CN112953031A publication Critical patent/CN112953031A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to a power control method and a device of a static wireless charging system of an electric vehicle, and the static wireless charging system of the electric vehicle, wherein the output current of a ground end device and the input current of a vehicle end device are respectively compared with respective target limit values, and the magnitude of a current instruction value is adjusted by a fixed step length according to the comparison result so as to limit the output power of the wireless charging system.

Description

Power control method and device for static wireless charging system of electric vehicle
Technical Field
The invention relates to the technical field of wireless charging, in particular to a power control method and device for a static wireless charging system of an electric vehicle.
Background
With the development of new energy, more and more automobiles begin to adopt electric or hybrid oil and electricity. At present, two modes, namely wired charging and wireless charging, are available for charging the electric automobile. Traditional wired charging needs cable junction, needs the people to plug the rifle that charges during charging, and the metal contact surface that uses the rifle that charges for a long time can wear and tear, needs periodic maintenance to have certain potential safety hazard to the people. And wireless charging does not have above problem, along with wireless charging technology more and more mature, its simple operation and security advantage such as security show gradually.
Since the chassis heights of different types of electric automobiles are different, the mechanical air gap of the wireless charging system is also greatly different, and the range of the mechanical air gap is an important index of the wireless charging system. The difficulty in achieving rated power operation under all mechanical air gaps is high, and the wireless charging system is generally required to be capable of outputting rated power within a specified mechanical air gap range.
When the mechanical air gap of the vehicle ground end coil is larger than the allowed range, the output current of the ground end device may trigger overcurrent protection before the output power reaches the target value. When the mechanical air gap of the vehicle ground end coil is smaller than the allowed range, the input current of the vehicle end device may trigger overcurrent protection before the output power reaches the target value. On the one hand, triggering overcurrent protection interrupts the charging process, and on the other hand, overcurrent risks damaging the device. Therefore, wireless charging systems must limit the power output by the system to allow proper charging beyond the allowable mechanical air gap.
Disclosure of Invention
Based on the above situation in the prior art, an object of the present invention is to provide a power control method and device for a stationary wireless charging system of an electric vehicle, which are used for controlling power of the stationary wireless charging system of the electric vehicle, so as to solve the problem that the wireless charging system cannot reliably and stably operate when a ground coil exceeds an allowable mechanical air gap range.
In order to achieve the above object, according to one aspect of the present invention, there is provided a power control method for a stationary wireless charging system of an electric vehicle, the stationary wireless charging system of the electric vehicle including a ground device and a vehicle-end device, the ground device providing electric energy to the vehicle-end device through a resonant circuit; the control method comprises the following steps:
collecting current parameters of a wireless charging system;
judging whether the current parameter is larger than or equal to a current limit value;
if the current parameter is larger than or equal to the current limit value, setting a power-limited operation command; adjusting the output current instruction value I of the vehicle-end device according to the power-limiting operation commandbattery_ref；
If the current parameter is less than the current limitValue, then according to the current output current instruction value Ibattery_refCharging is carried out;
and returning to the first step for re-execution.
Further, the collecting current parameters of the wireless charging system includes:
output current I of ground terminal device of wireless charging system is gatheredacAnd collecting input current I of vehicle end device of wireless charging systemBoost。
Further, the determining whether the current parameter is greater than or equal to a current limit value includes:
judging the output current I of the ground deviceacWhether the current is greater than or equal to the target limit value I of the current at the ground endac_limit(ii) a Or judging the input current I of the vehicle-end deviceBoostWhether the current is more than or equal to the target limit value I of the vehicle end currentBoost_limit。
Further, according to the power-limited operation command, adjusting an output current instruction value I of the vehicle-end devicebattery_refThe method comprises the following steps:
the current output current instruction value Ibattery_refSubtracting the fixed step length delta I to obtain the updated current output current instruction value so as to reduce the output current instruction value Ibattery_ref。
According to a second aspect of the present invention, a power control device for a stationary wireless charging system of an electric vehicle is provided, where the stationary wireless charging system of the electric vehicle includes a ground end device and a vehicle end device, and the ground end device provides electric energy to the vehicle end device through a resonant coil; the control device includes: the device comprises a current acquisition module, a current judgment module and a power control module; wherein the content of the first and second substances,
the current acquisition module acquires current parameters of the wireless charging system;
the current judging module is used for judging whether the current parameter is greater than or equal to a current limit value;
the power control module sets a power-limited operation command if the current parameter is greater than or equal to a current limit value; adjusting the vehicle end according to the limited power operation commandOutput current command value I of devicebattery_ref(ii) a If the current parameter is smaller than the current limit value, according to the current output current instruction value Ibattery_refAnd charging is carried out.
Furthermore, the current collection module collects the output current I of the ground device of the wireless charging systemacAnd collecting input current I of vehicle end device of wireless charging systemBoost。
Further, the current judgment module judges the output current I of the ground deviceacWhether the current is greater than or equal to the target limit value I of the current at the ground endac_limit(ii) a Or judging the input current I of the vehicle-end deviceBoostWhether the current is more than or equal to the target limit value I of the vehicle end currentBoost_limit。
Further, the power control module adjusts an output current instruction value I of the vehicle-end device according to the limited power operation commandbattery_refThe method comprises the following steps:
the current output current instruction value Ibattery_refSubtracting the fixed step length delta I to obtain the updated current output current instruction value so as to reduce the output current instruction value Ibattery_ref。
According to a third aspect of the present invention, there is provided a stationary wireless charging system for an electric vehicle, comprising: a ground device, a resonance circuit, a vehicle end device, and a power control device; wherein the content of the first and second substances,
the resonance circuit comprises a transmitting coil, a receiving coil and a resonance capacitor;
the ground end device and the vehicle end device are connected with each other through a resonant circuit, and the ground end device provides electric energy for the vehicle end device through the resonant circuit;
the power control apparatus comprising a power control apparatus as claimed in any one of claims 5 to 8.
In summary, the present invention provides a power control method and device for a stationary wireless charging system of an electric vehicle, and a stationary wireless charging system of an electric vehicle, wherein the output current of a ground device and the input current of a vehicle device are respectively compared with respective target limit values, and the magnitude of a current command value is adjusted by a fixed step length according to the comparison result, so as to control the output power of the wireless charging system.
Drawings
Fig. 1 is a circuit diagram of a wireless charging system;
FIG. 2 is a flow chart of a method for controlling power of a stationary wireless charging system of an electric vehicle according to the present invention;
fig. 3 is a block diagram of a power control device of a stationary wireless charging system for an electric vehicle according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. According to an embodiment of the present invention, there is provided a power control method for a stationary wireless charging system of an electric vehicle, where a circuit diagram of the wireless charging system, such as the circuit shown in fig. 1, applied in the power control method includes: ground end device, resonant circuit, car end device. The ground device comprises a PFC circuit and an inverter circuit, and the PFC circuit can adopt a PFC circuit topology which is common in the field and can be used for an electric vehicle charging circuit. The inverter circuit can adopt a full-bridge inverter circuit, a half-bridge inverter circuit and other common inverter circuit topologies. The ground end device is connected with a power grid, and the power grid provides electric energy for the ground end device. The vehicle-end device comprises an uncontrolled rectifying circuit and a BOOST circuit, wherein the BOOST circuit can adopt a circuit topology shown in fig. 1 or other common BOOST circuit topologies in the field. The output of the vehicle-end device is connected with a battery of the electric automobile so as to charge the battery. The ground device is usually installed at a fixed location such as a charging station, and the vehicle end device is installed in a charging vehicle. The ground end device further comprises a transmitting coil and a resonant capacitor, the vehicle end device further comprises a receiving coil and a resonant capacitor, and the transmitting coil, the receiving coil and the resonant capacitor jointly form a resonant circuit. The ground end device and the vehicle end device are connected with each other through a resonant circuit, and the ground end device provides electric energy for the vehicle end device through the resonant circuit. The flow chart of the method is shown in fig. 2, and comprises the following steps:
gather wireless charging system's current parameter, include: output current I of ground terminal device of wireless charging system is gatheredacAccording to the circuit shown in the present embodiment, the output current IacNamely the high-frequency inverter current output by the inverter circuit of the ground device; and collecting input current I of vehicle end device of wireless charging systemBoostThe input current IBoostThe input current I of the vehicle-end device can be the current of the BOOST circuit of the vehicle-end device, in combination with the wireless charging system circuit provided in the embodiment of fig. 1BoostFor in which an inductance L flows in the BOOST circuit1The current of (2).
Judging whether the current parameter is greater than or equal to the current limit value, and judging whether the current parameter is greater than or equal to the current limit value according to the current parameter acquired in the previous step, wherein the judging step comprises the following steps: judging the output current I of the ground deviceacWhether the current is greater than or equal to the target limit value I of the current at the ground endac_limit(ii) a Or judging the input current I of the vehicle-end deviceBoostWhether the current is more than or equal to the target limit value I of the vehicle end currentBoost_limit。
If the current parameter is larger than or equal to the current limit value, setting a power-limited operation command; adjusting the output current instruction value I of the vehicle-end device according to the power-limiting operation commandbattery_refAnd returning to the first step for re-execution. In the method provided in this embodiment, the power control may be performed by determining whether the output current of the ground device or the input current of the vehicle-end device exceeds the current limit value, that is, the output current of the ground deviceIacIs greater than or equal to the target limit value I of the current of the ground terminalac_limitOr input current I of vehicle-end deviceBoostGreater than or equal to the vehicle end current target limit value IBoost_limitIn the process, the power-limited operation command is set, and at the moment, the output current instruction value I of the vehicle-end device is adjusted according to the power-limited operation commandbattery_refFor power control. Generally speaking, the ground-side current target limit value and the vehicle-side current target limit value are smaller than the designed protection values, and can be set according to actual conditions. Adjusting output current command value I of vehicle end devicebattery_refThe following method may be employed: the current output current instruction value Ibattery_refSubtracting the fixed step length delta I to obtain the updated current output current instruction value so as to reduce the output current instruction value Ibattery_ref. And after the current output current instruction value is reduced, returning to the first step, namely continuously acquiring the current parameters of the wireless charging system, and comparing the acquired current parameters with the current limit value until the current parameters meet the requirements. The size of the fixed step Δ I can be determined in the following way: determining a current command value Ibattery_refThe reduced rate K, i.e. how many amperes per second are reduced; setting the execution period of the method as T, the current instruction value Ibattery_refThe fixed step size of the adjustment is Δ I — K × T. As can be seen from the above description, in the power control method, the vehicle-end device reduces the output current command value by a fixed step length, and reduces the system output power until the output current of the ground-end device is smaller than the target limit value or the input current of the vehicle-end device is smaller than the target limit value, so that the overcurrent protection can be prevented from being triggered, and the normal charging process of the system can be ensured.
According to another embodiment of the invention, a power control device of a static wireless charging system of an electric vehicle is provided, wherein the static wireless charging system of the electric vehicle comprises a ground end device and a vehicle end device, and the ground end device supplies electric energy to the vehicle end device through a resonant coil. As shown in fig. 3, the control device includes: the device comprises a current acquisition module, a current judgment module and a power control module.
The current acquisition module gathers wireless charging system's current parameter, includes: output current I of ground terminal device of wireless charging system is gatheredacAnd collecting input current I of vehicle end device of wireless charging systemBoost。
The current judging module is used for judging whether the current parameter is greater than or equal to a current limit value; judging the output current I of the ground deviceacWhether the current is greater than or equal to the target limit value I of the current at the ground endac_limit(ii) a Or judging the input current I of the vehicle-end deviceBoostWhether the current is more than or equal to the target limit value I of the vehicle end currentBoost_limit
The power control module is used for setting a power-limiting operation command if the current parameter is greater than or equal to a current limiting value; adjusting the output current instruction value I of the vehicle-end device according to the power-limiting operation commandbattery_ref(ii) a If the current parameter is smaller than the current limit value, according to the current output current instruction value Ibattery_refAnd charging is carried out.
In summary, the present invention relates to a power control method and device for a stationary wireless charging system of an electric vehicle, and a stationary wireless charging system of an electric vehicle, wherein the output current of a ground device and the input current of a vehicle device are respectively compared with respective target limit values, and the magnitude of a current command value is adjusted by a fixed step length according to the comparison result, so as to control the output power of the wireless charging system.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (9)

1. The power control method of the static wireless charging system of the electric automobile is characterized in that the static wireless charging system of the electric automobile comprises a ground end device and a vehicle end device, wherein the ground end device provides electric energy for the vehicle end device through a resonant circuit; the control method comprises the following steps:
collecting current parameters of a wireless charging system;
judging whether the current parameter is larger than or equal to a current limit value;
if the current parameter is larger than or equal to the current limit value, setting a power-limited operation command; adjusting the output current instruction value I of the vehicle-end device according to the power-limiting operation commandbattery_ref；
If the current parameter is smaller than the current limit value, according to the current output current instruction value Ibattery_refCharging is carried out;
and returning to the first step for re-execution.
2. The method of claim 1, wherein the collecting current parameters of the wireless charging system comprises:
output current I of ground terminal device of wireless charging system is gatheredacAnd collecting input current I of vehicle end device of wireless charging systemBoost。
3. The method of claim 2, wherein determining whether the current parameter is greater than or equal to a current limit value comprises:
judging the output current I of the ground deviceacWhether the current is greater than or equal to the target limit value I of the current at the ground endac_limit(ii) a Or judging the input current I of the vehicle-end deviceBoostWhether the current is more than or equal to the target limit value I of the vehicle end currentBoost_limit。
4. The method of claim 3, wherein the step of applying the coating comprises applying a coating to the substrateAdjusting the output current instruction value I of the vehicle-end device according to the power-limiting operation commandbattery_refThe method comprises the following steps:
the current output current instruction value Ibattery_refSubtracting the fixed step length delta I to obtain the updated current output current instruction value so as to reduce the output current instruction value Ibattery_ref。
5. The power control device of the static wireless charging system of the electric automobile is characterized in that the static wireless charging system of the electric automobile comprises a ground end device and a vehicle end device, wherein the ground end device provides electric energy for the vehicle end device through a resonance coil; the control device includes: the device comprises a current acquisition module, a current judgment module and a power control module; wherein the content of the first and second substances,
the current acquisition module acquires current parameters of the wireless charging system;
the current judging module is used for judging whether the current parameter is greater than or equal to a current limit value;
the power control module sets a power-limited operation command if the current parameter is greater than or equal to a current limit value; adjusting the output current instruction value I of the vehicle-end device according to the power-limiting operation commandbattery_ref(ii) a If the current parameter is smaller than the current limit value, according to the current output current instruction value Ibattery_refAnd charging is carried out.
6. The device of claim 5, wherein the current collecting module collects an output current I of a ground device of the wireless charging systemacAnd collecting input current I of vehicle end device of wireless charging systemBoost。
7. The apparatus of claim 6, wherein the current determining module determines an output current I of the ground deviceacWhether the current is greater than or equal to the target limit value I of the current at the ground endac_limit(ii) a Or judging the input current I of the vehicle-end deviceBoostWhether the current is more than or equal to the target limit value I of the vehicle end currentBoost_limit。
8. The apparatus of claim 7, wherein the power control module adjusts an output current command value I of the end-of-vehicle device according to the limited power operation commandbattery_refThe method comprises the following steps:
the current output current instruction value Ibattery_refSubtracting the fixed step length delta I to obtain the updated current output current instruction value so as to reduce the output current instruction value Ibattery_ref。
9. The utility model provides an electric automobile static wireless charging system which characterized in that includes: a ground device, a resonance circuit, a vehicle end device, and a power control device; wherein the content of the first and second substances,
the resonance circuit comprises a transmitting coil, a receiving coil and a resonance capacitor;
the ground end device and the vehicle end device are connected with each other through a resonant circuit, and the ground end device provides electric energy for the vehicle end device through the resonant circuit;
the power control apparatus comprising a power control apparatus as claimed in any one of claims 5 to 8.
CN202110151747.7A 2021-02-03 2021-02-03 Power control method and device for static wireless charging system of electric vehicle Pending CN112953031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110151747.7A CN112953031A (en) 2021-02-03 2021-02-03 Power control method and device for static wireless charging system of electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110151747.7A CN112953031A (en) 2021-02-03 2021-02-03 Power control method and device for static wireless charging system of electric vehicle

Publications (1)

Publication Number Publication Date
CN112953031A true CN112953031A (en) 2021-06-11

Family

ID=76243532

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110151747.7A Pending CN112953031A (en) 2021-02-03 2021-02-03 Power control method and device for static wireless charging system of electric vehicle

Country Status (1)

Country Link
CN (1) CN112953031A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105406564A (en) * 2015-11-30 2016-03-16 小米科技有限责任公司 Wireless charging method, device and system
CN106253656A (en) * 2015-06-10 2016-12-21 丰田自动车株式会社 Noncontact power transmission device and power transmission system
CN106374595A (en) * 2015-07-21 2017-02-01 丰田自动车株式会社 Contactless power transmission device and power transfer system
CN109428404A (en) * 2017-08-30 2019-03-05 恩智浦美国有限公司 The method and system of outer analyte detection is used in wireless energy transfer system
CN110936827A (en) * 2019-12-20 2020-03-31 中兴新能源汽车有限责任公司 Wireless charging system, wireless charging control method and automobile wireless charging device
CN111016694A (en) * 2019-12-17 2020-04-17 华为技术有限公司 Wireless charging transmitting terminal, receiving terminal, method and system
WO2020147126A1 (en) * 2019-01-18 2020-07-23 Oppo广东移动通信有限公司 Wireless charging method, device to be charged and wireless charging system
CN111555418A (en) * 2020-04-10 2020-08-18 华为技术有限公司 Receiving end, system and method of wireless charging system
CN111756123A (en) * 2019-03-29 2020-10-09 北京小米移动软件有限公司 Remote wireless charging transmitting equipment and method for adjusting wireless charging transmitting power

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106253656A (en) * 2015-06-10 2016-12-21 丰田自动车株式会社 Noncontact power transmission device and power transmission system
CN106374595A (en) * 2015-07-21 2017-02-01 丰田自动车株式会社 Contactless power transmission device and power transfer system
CN105406564A (en) * 2015-11-30 2016-03-16 小米科技有限责任公司 Wireless charging method, device and system
CN109428404A (en) * 2017-08-30 2019-03-05 恩智浦美国有限公司 The method and system of outer analyte detection is used in wireless energy transfer system
WO2020147126A1 (en) * 2019-01-18 2020-07-23 Oppo广东移动通信有限公司 Wireless charging method, device to be charged and wireless charging system
CN111756123A (en) * 2019-03-29 2020-10-09 北京小米移动软件有限公司 Remote wireless charging transmitting equipment and method for adjusting wireless charging transmitting power
CN111016694A (en) * 2019-12-17 2020-04-17 华为技术有限公司 Wireless charging transmitting terminal, receiving terminal, method and system
CN110936827A (en) * 2019-12-20 2020-03-31 中兴新能源汽车有限责任公司 Wireless charging system, wireless charging control method and automobile wireless charging device
CN111555418A (en) * 2020-04-10 2020-08-18 华为技术有限公司 Receiving end, system and method of wireless charging system

Similar Documents

Publication Publication Date Title
CN111002873B (en) Fuel cell automobile energy management method
CN106972582B (en) High-power wireless charging system and control method thereof
US20130088198A1 (en) Electric charging system and electric charging method
KR101509910B1 (en) Charging control method for plug-in hybrid electric vehicle and electric vehicle
CN105207303A (en) Charging system and method for charger of electric car
CN204497817U (en) The wireless charging system of electric automobile
CN109733249B (en) New energy automobile charging system and control method thereof
CN105790398A (en) Semi vehicle-mounted rapid charging method and charging device of power-driven bus
CN204304574U (en) The vehicle-mounted quick charge device of a kind of electric automobile
CN105553057B (en) A kind of electric automobile charging station control system based on electric network protection
CN204567343U (en) Light bus two-way redundant safety high-tension apparatus and control system thereof
CN101917046A (en) Charger and control strategy thereof
CN109747469A (en) A kind of intelligent adjustment control method of electric car charging
CN113733964A (en) Control method of vehicle-mounted charger of pure electric vehicle
US20120025763A1 (en) Charging system of mobile vehicle and method for operating the same
CN104859466A (en) Method and device for controlling output voltage of DC (direct current)/DC converter
CN111806266A (en) Energy storage type intermittent vehicle power supply system and power supply method
CN112389216A (en) Vehicle wireless charging control method, vehicle-end controller and wireless charging system
CN106740219A (en) Control box and a kind of electric automobile on a kind of cable
CN110816323A (en) Automobile wireless charging system and method based on transmitting coil array focusing
KR102470998B1 (en) Charging apparatus for vehicle, and current stabilization method thereof
CN112953031A (en) Power control method and device for static wireless charging system of electric vehicle
CN109795358B (en) Electric automobile charging power control method without capacity-increasing charging
CN110649687A (en) BMS intelligent charging identification control method
CN110979080B (en) BMS self-adaptive control method and system for charging voltage

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination