CN107825979B - Vehicle charging method, device and system - Google Patents

Vehicle charging method, device and system Download PDF

Info

Publication number
CN107825979B
CN107825979B CN201711041281.5A CN201711041281A CN107825979B CN 107825979 B CN107825979 B CN 107825979B CN 201711041281 A CN201711041281 A CN 201711041281A CN 107825979 B CN107825979 B CN 107825979B
Authority
CN
China
Prior art keywords
current
charging
maximum charging
output maximum
dry contact
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.)
Active
Application number
CN201711041281.5A
Other languages
Chinese (zh)
Other versions
CN107825979A (en
Inventor
范凯
沈海寅
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.)
Zhiche Youxing Technology Shanghai Co ltd
Original Assignee
Zhiche Youxing Technology Shanghai 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 Zhiche Youxing Technology Shanghai Co ltd filed Critical Zhiche Youxing Technology Shanghai Co ltd
Priority to CN201711041281.5A priority Critical patent/CN107825979B/en
Publication of CN107825979A publication Critical patent/CN107825979A/en
Application granted granted Critical
Publication of CN107825979B publication Critical patent/CN107825979B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • 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

Abstract

The embodiment of the invention discloses a vehicle charging method, a vehicle charging device and a vehicle charging system, wherein the method comprises the following steps: identifying the magnitude of current received by the dry contact; adjusting a duty cycle of the CP clock pulse signal based on the identified current; calculating according to the adjusted duty ratio to obtain the output maximum charging current; and charging the external equipment based on the output maximum charging current. The duty ratio of a CP clock pulse signal is adjusted by identifying the current received by a dry contact; calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is ensured to be smaller than the identified current, the maximum power which can be provided by the power grid can be used for working all the time, and meanwhile, the problem of fire caused by the fact that the charging current exceeds the allowance of the power grid load is solved; the external equipment is charged based on the output maximum charging current, and the external equipment can be charged quickly and safely.

Description

Vehicle charging method, device and system
Technical Field
The invention relates to a charging technology, in particular to a vehicle charging method, device and system.
Background
The automobile plays an increasingly important role in promoting the development of the current social economy, however, the global shortage of petroleum energy, the aggravation of environmental pollution hazard, energy conservation and emission reduction tend to become the main direction of automobile development in the future, and the development of the electric automobile is the best way for solving the two technical difficulties.
In the process of implementing the invention, the inventor finds that how to charge the electric automobile more conveniently, more quickly and more safely is a problem which needs to be solved urgently in the industry.
Disclosure of Invention
The embodiment of the invention provides a vehicle charging technology.
The embodiment of the invention provides a vehicle charging method, which comprises the following steps:
identifying the magnitude of current received by the dry contact;
adjusting a duty cycle of the CP clock pulse signal based on the identified current;
calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is less than the identified current;
and charging the external equipment based on the output maximum charging current.
According to an aspect of an embodiment of the present invention, there is provided a vehicle charging apparatus including:
the identification unit is used for identifying the magnitude of the current received by the dry contact;
a control unit for adjusting a duty ratio of the CP clock pulse signal based on the identified current;
the current calculating unit is used for calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is less than the identified current;
and the charging unit is used for charging the external equipment based on the output maximum charging current.
According to an aspect of an embodiment of the present invention, there is provided a vehicle charging system including:
at least two harness devices, a vehicle charging device and a vehicle charging interface as described above;
the wire harness device is used for communicating a power supply and the vehicle charging device;
the vehicle charging device is used for converting the current received by the wire harness device into the maximum charging current and charging the vehicle through the vehicle charging interface based on the maximum charging current.
Based on the vehicle charging method, the vehicle charging device and the vehicle charging system provided by the embodiment of the invention, the duty ratio of the CP clock pulse signal is adjusted by identifying the current received by the dry contact; calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is ensured to be smaller than the identified current, the maximum power which can be provided by the power grid can be used for working all the time, and meanwhile, the problem of fire caused by the fact that the charging current exceeds the allowance of the power grid load is solved; the external equipment is charged based on the output maximum charging current, and the external equipment can be charged quickly and safely.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
The invention will be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of one embodiment of a vehicle charging method of the present invention.
Fig. 2 is a schematic diagram of an exemplary control pilot circuit.
Fig. 3 is a schematic structural diagram of one embodiment of the vehicle charging device of the present invention.
Fig. 4 is a schematic structural diagram of one embodiment of the vehicle charging system of the present invention.
Fig. 5a-b are partial schematic structural views of a specific example of the vehicle power supply system of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Embodiments of the invention are operational with numerous other general purpose or special purpose computing system environments or configurations. Examples of well known computing systems, environments, and/or configurations that may be suitable for use with the computer system/server include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, hand-held or laptop devices, microprocessor-based systems, set top boxes, programmable consumer electronics, network pcs, minicomputer systems, mainframe computer systems, distributed cloud computing environments that include any of the above systems, and the like.
The computer system/server may be described in the general context of computer system-executable instructions, such as program modules, being executed by a computer system. Generally, program modules may include routines, programs, objects, components, logic, data structures, etc. that perform particular tasks or implement particular abstract data types. The computer system/server may be practiced in distributed cloud computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed cloud computing environment, program modules may be located in both local and remote computer system storage media including memory storage devices.
In combination with the condition of a Chinese household power grid, the power of the portable vehicle-mounted charging device in the prior art is generally 1.6KW or 3.3 KW; the size of the charging power depends on the type (10A or 16A) of a national standard three-plug and the calibration of software, and the problems are as follows:
1)1.6KW charging power is smaller, the charging speed is slow, and the charging can not be carried out with higher power (hardware cannot support) under the condition that the load of a power grid allows;
2)3.3KW charging power is big, and charging speed is fast, but can't automatic current limiting under the grid load disallowed condition, and the electric current exceeds the fire accident of easily causing of the allowable upper limit.
In the other prior art, the power of the charging device can be manually adjusted from 1.6KW to 3.3 KW; integrated two kinds of modes of charging of 1.6KW and 3.3KW simultaneously in the control box on the cable, can carry out manual switch through the switching button on the control box, the problem that its exists is:
the requirement on the cognition degree of the user is high, and when the user cannot correctly identify the current power grid condition and only needs the charging speed without considering the power grid load, a fire accident is easily caused.
FIG. 1 is a flow chart of one embodiment of a vehicle charging method of the present invention. As shown in fig. 1, the method of this embodiment includes:
step 101, identifying the magnitude of the current received by the dry contact.
Step 102, adjusting a duty cycle of the CP clock pulse signal based on the identified current.
The duty ratio of the CP clock pulse signal is adjusted through the identified current, so that the output charging current can be effectively prevented from being larger than the identified current, and the occurrence of fire can be effectively prevented; meanwhile, the maximum charging current which can be output can be controlled to be close to the identified current, and the maximum power charging can be realized under the condition that the load of the power grid allows.
And 103, calculating according to the adjusted duty ratio to obtain the output maximum charging current.
Wherein the output maximum charging current is less than the identified current; by controlling the output maximum charging current to be less than the identified current, the charging power is prevented from exceeding the allowance of the grid load.
And 104, charging the external equipment based on the output maximum charging current.
Based on the vehicle charging method provided by the embodiment of the invention, the duty ratio of the CP clock pulse signal is adjusted by identifying the current received by the dry contact; calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is ensured to be smaller than the identified current, the maximum power which can be provided by the power grid can be used for working all the time, and meanwhile, the problem of fire caused by the fact that the charging current exceeds the allowance of the power grid load is solved; the external equipment is charged based on the output maximum charging current, and the external equipment can be charged quickly and safely.
In one specific example of the above-described embodiment of the vehicle charging method of the invention, step 101 includes:
and detecting the current received by the dry contact, identifying the received current and acquiring the magnitude of the received current.
In this embodiment, the current received by the dry contact is detected in real time, and the magnitude of the received current can be obtained by an ammeter or other device, so as to set the charging current in the following.
In one specific example of the above-described embodiment of the vehicle charging method of the invention, step 101 includes:
detecting the state of a port connected with a dry contact; the dry contact is connected with at least two ports, the states of the ports comprise opening and closing, and only one port is closed at the same time;
and determining the current port connected with the dry contact point based on the port state, and obtaining the current received by the dry contact point through the connected port.
In this embodiment, the received current does not need to be detected in real time, but only needs to be provided with at least two ports connected to the dry contact, and different conduction currents are set for each port, and when the port of a certain port is closed, the received current is the conduction current for the port.
In another embodiment of the vehicle charging method according to the present invention, on the basis of the above embodiments, between the operation 101 and the operation 102, the method further includes:
and detecting the duty ratio of the CP clock pulse signal corresponding to the currently output charging current.
In this embodiment, it is pointed out that, when the received current is identified, the external device is already charged, and the maximum charging current output at this time does not necessarily conform to the newly received current, so the duty ratio of the maximum charging current is first detected to provide a reference for the operation 102 to adjust the duty ratio of the CP clock signal based on the identified current.
In one specific example of the above-described embodiments of the vehicle charging method of the invention, operation 102 includes:
comparing the identified current with a currently output charging current; the duty cycle of the CP clock signal is adjusted based on the comparison result.
In this embodiment, the duty ratio of the CP clock signal is proportional to the charging current, and the current magnitude can be calculated by setting a formula based on the duty ratio, so that the information of increasing or decreasing the duty ratio of the CP clock signal can be obtained by comparing the identified current with the currently output charging current; specifically, the method comprises the following steps:
when the identified current is larger than the currently output maximum charging current, increasing the duty ratio of the CP clock pulse signal;
and when the identified current is less than the currently output maximum charging current, reducing the duty ratio of the CP clock pulse signal.
In yet another embodiment of the vehicle charging method according to the present invention, on the basis of the above embodiments, operation 102 includes:
based on the identified current, the duty cycle of the CP clock signal is adjusted by the PWM pulse width modulation signal.
In this embodiment, based on the national standard GBT 18487.1-2015 part 1 of the electric vehicle conduction charging system: the principle of obtaining power from a power supply device by an electric vehicle through a CP signal is described in appendix a of the general requirements, and fig. 2 is a schematic diagram of a typical control pilot circuit. As shown in fig. 2, the present invention is based on fig. 2, and implements the function that the duty ratio of the CP signal varies with the power variation of the power supply device; in the figure, the duty ratio obtained at the detection point 1 is transmitted to a power supply control device, and the power supply control device controls PWM to adjust the duty ratio of a CP signal by outputting different currents; and (5) iteratively adjusting until the obtained duty ratio meets the requirement.
In yet another embodiment of the vehicle charging method according to the present invention, on the basis of the above embodiments, operation 104 includes:
and calculating to obtain the maximum charging power based on the output maximum charging current, and charging the external equipment through the maximum charging power.
Since the current grid load is measured by power in the currently provided vehicle charging mode, the maximum charging power is calculated and obtained based on the product of the maximum charging current and the input voltage, and the maximum charging power is used for charging the external device.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Fig. 3 is a schematic structural diagram of one embodiment of the vehicle charging device of the present invention. The apparatus of this embodiment may be used to implement the method embodiments of the present invention described above. As shown in fig. 3, the apparatus of this embodiment includes:
and the identification unit 31 is used for identifying the magnitude of the current received by the dry contact.
A control unit 32 for adjusting the duty cycle of the CP clock pulse signal based on the identified current.
The duty ratio of the CP clock pulse signal is adjusted through the identified current, so that the output charging current can be effectively prevented from being larger than the identified current, and the occurrence of fire can be effectively prevented; meanwhile, the maximum charging current which can be output can be controlled to be close to the identified current, and the maximum power charging can be realized under the condition that the load of the power grid allows.
And a current calculating unit 33, configured to calculate according to the adjusted duty ratio, and obtain an output maximum charging current.
The output maximum charging current is less than the identified current.
And the charging unit 34 is used for charging the external equipment based on the output maximum charging current.
Based on the vehicle charging device provided by the embodiment of the invention, the duty ratio of the CP clock pulse signal is adjusted by identifying the current received by the dry contact; calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is ensured to be smaller than the identified current, the maximum power which can be provided by the power grid can be used for working all the time, and meanwhile, the problem of fire caused by the fact that the charging current exceeds the allowance of the power grid load is solved; the external equipment is charged based on the output maximum charging current, and the external equipment can be charged quickly and safely.
In a specific example of the above embodiment of the vehicle charging apparatus of the present invention, the identification unit 31 is specifically configured to detect the current received by the dry contact, identify the received current, and obtain the magnitude of the received current.
In a specific example of the above-described embodiment of the vehicle charging apparatus of the present invention, the identification unit 31 is specifically configured to detect a port state of the dry contact connection; the dry contact is connected with at least two ports, the states of the ports comprise opening and closing, and only one port is closed at the same time; and determining the current port connected with the dry contact point based on the port state, and obtaining the current received by the dry contact point through the connected port.
In another embodiment of the vehicle charging apparatus according to the present invention, in addition to the above embodiments, the vehicle charging apparatus further includes:
and the detection unit is used for detecting the duty ratio of the CP clock pulse signal corresponding to the currently output maximum charging current.
In this embodiment, it is pointed out that, when the received current is identified, the external device is already charged, and the maximum charging current output at this time does not necessarily conform to the newly received current, so the duty ratio of the maximum charging current is first detected to provide a reference for the operation 102 to adjust the duty ratio of the CP clock signal based on the identified current.
In one specific example of the above-described embodiments of the vehicle charging device of the invention, the control unit 32 includes:
the comparison module is used for comparing the identified current with the currently output maximum charging current;
and the adjusting module is used for adjusting the duty ratio of the CP clock pulse signal based on the comparison result.
In a specific example of the foregoing embodiments of the vehicle charging apparatus according to the present invention, the adjusting module is specifically configured to increase a duty ratio of the CP clock signal when the identified current is greater than the currently output maximum charging current; and when the identified current is less than the currently output maximum charging current, reducing the duty ratio of the CP clock pulse signal.
In another embodiment of the vehicle charging apparatus according to the present invention, based on the above embodiments, the control unit 32 is specifically configured to adjust the duty ratio of the CP clock pulse signal through the PWM pulse width modulation signal based on the identified current.
In this embodiment, based on the national standard GBT 18487.1-2015 part 1 of the electric vehicle conduction charging system: the principle of obtaining power from a power supply device by an electric vehicle through a CP signal is described in appendix a of the general requirements, and fig. 2 is a schematic diagram of a typical control pilot circuit. As shown in fig. 2, the present invention is based on fig. 2, and implements the function that the duty ratio of the CP signal varies with the power variation of the power supply device; in the figure, the duty ratio obtained at the detection point 1 is transmitted to a power supply control device, and the power supply control device controls PWM to adjust the duty ratio of a CP signal by outputting different currents; and (5) iteratively adjusting until the obtained duty ratio meets the requirement.
In another embodiment of the vehicle charging apparatus according to the present invention, on the basis of the above embodiments, the charging unit 34 is specifically configured to calculate a maximum charging power based on the output maximum charging current, and charge the external device with the maximum charging power.
Since the current grid load is measured by power in the currently provided vehicle charging mode, the maximum charging power is calculated and obtained based on the product of the maximum charging current and the input voltage, and the maximum charging power is used for charging the external device.
Fig. 4 is a schematic structural diagram of one embodiment of the vehicle charging system of the present invention. As shown in fig. 4, the system of this embodiment includes:
at least two wire harness devices 10, a vehicle charging device 30 and a vehicle charging interface 20 according to any of the above embodiments of the present invention;
a wire harness device 10 for communicating a power supply and a vehicle charging device 30;
and a vehicle charging device 30 for converting the current received through the wire harness device 10 into a maximum charging current and charging the vehicle through the vehicle charging interface 20 based on the maximum charging current.
Based on the vehicle charging system provided by the embodiment of the invention, the maximum charging capacity of the power grid is identified through the self-adaptive matching of different wire harness devices, the maximum power which can be borne by the power grid is always used for charging, and the charging time is effectively shortened; by automatically identifying the maximum charging capacity of the power grid, electrical and fire accidents caused by long-time charging with charging power exceeding the bearable power grid due to misoperation when the charging capacity of the power grid is insufficient can be avoided.
In a specific example of the above-described embodiment of the vehicle charging system of the invention, the vehicle charging device 30, further, is configured to identify the wire harness device 10 based on the received current; the magnitude of the current output from each harness device 10 is different.
In one specific example of the vehicle power supply system of the invention, including the harness device T1 and the harness device T2, the cable capacity of the vehicle power supply device is 16A. According to the maximum power that the electric wire netting can provide (specific power is different output interface is different, can select the pencil device according to interface matching situation), select to use pencil device T1 or pencil device T2. The cable capacity of the wiring harness device T1 is 10A, a three-plug of a 10A national standard is used, and a normally closed dry contact is arranged at the opposite insertion part of the wiring harness device T1 and the control protection device on the cable. The cable capacity of the wiring harness device T2 is 16A, a 16A national standard three-plug is used, and a normally open dry contact is arranged at the opposite insertion position of the wiring harness device T2 and the on-cable control protection device.
Fig. 5a-b are partial schematic structural views of a specific example of the vehicle power supply system of the present invention. As shown in fig. 5a, when the vehicle power supply device recognizes that the harness device T1 is used, the dry contact is closed, and after the on-cable control protection device detects the open-closed state of the dry contact, according to the international GBT 18487.1-2015 part 1 of the electric vehicle conduction charging system: the general requirements stipulate that when a single chip microcomputer in the on-cable control protection device detects a T1 state (a dry contact is closed), the duty ratio of a CP signal wave is adjusted to 25%, and when a vehicle detects that the duty ratio of a CP signal PWM is 25%, the maximum charging current Imax is adjusted to 25% × 100 × 0.6 ═ 15A, so that charging with 220V × 15A ═ 3.3KW is realized.
As shown in fig. 5b, when the vehicle power supply device recognizes that the harness device T2 is used, the dry contact is opened, and after the on-cable control protection device detects the open/close state of the dry contact, according to the international GBT 18487.1-2015 part 1 of the electric vehicle conduction charging system: according to the stipulation of the general requirements, a single chip microcomputer in a control protection box on the cable detects a T2 state (a dry contact is disconnected), the wave duty ratio of a CP signal is adjusted to 12%, and after a vehicle detects that the duty ratio of a CP signal PWM is 12%, the maximum charging current Imax is adjusted to 12% 100.6 to 7.2A, so that charging with 220V 7.2A 1.584KW is approximately equal to 1.6KW is realized.
The charging system provided by the embodiment automatically identifies the charging mode according to the current power grid condition through the adaptive matching of the three plugs in the 10A national standard and the three plugs in the 16A national standard, so that the automatic adjustment function of the two charging modes of the charging device, namely the 1.6KW charging mode and the 3.3KW charging mode, is realized, and the quick charging is realized by utilizing the current power grid condition to the maximum extent.
The formula for calculating the maximum charging current is obtained based on a mapping relationship between duty ratio generated by the charging device and charging current limit provided in table 1, which is derived from international GBT 18487.1-2015 part 1 of electric vehicle conduction charging system: general requirements.
Figure GDA0002522925450000111
TABLE 1 Duty ratio and charging current limit mapping table generated by charging device
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The method and apparatus of the present invention may be implemented in a number of ways. For example, the methods and apparatus of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (18)

1. A vehicle charging method, characterized by comprising:
identifying the magnitude of current received by the dry contact; the method comprises the following steps: detecting the state of a port connected with a dry contact; the dry contact is connected with at least two ports, the states of the ports comprise opening and closing, and only one port is closed at the same time; determining a port currently connected with a dry contact point based on the port state, and obtaining the current received by the dry contact point through the connected port;
adjusting a duty cycle of the CP clock pulse signal based on the identified current;
calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is less than the identified current;
and charging the external equipment based on the output maximum charging current.
2. The method of claim 1, wherein the identifying the magnitude of the current received by the dry contact comprises:
and detecting the current received by the dry contact, identifying the received current and acquiring the magnitude of the received current.
3. The method of claim 2, wherein after identifying the magnitude of the current received by the dry contact, further comprising:
and detecting the duty ratio of the CP clock pulse signal corresponding to the currently output maximum charging current.
4. The method of claim 3, wherein adjusting a duty cycle of a CP clock signal based on the identified current comprises:
comparing the identified current to the currently output maximum charging current; adjusting a duty cycle of the CP clock pulse signal based on the comparison result.
5. The method of claim 4, wherein the adjusting the duty cycle of the CP clock pulse signal based on the comparison comprises:
increasing the duty cycle of the CP clock pulse signal when the identified current is greater than the currently output maximum charging current;
and when the identified current is less than the currently output maximum charging current, reducing the duty ratio of the CP clock pulse signal.
6. The method of any of claims 1-5, wherein adjusting the duty cycle of the CP clock pulse signal based on the identified current comprises:
adjusting the duty cycle of the CP clock pulse signal by the PWM pulse width modulation signal based on the identified current.
7. The method of any one of claims 1-5, wherein charging the external device based on the outputted maximum charging current comprises:
and calculating to obtain the maximum charging power based on the output maximum charging current, and charging the external equipment through the maximum charging power.
8. The method of claim 6, wherein charging an external device based on the output maximum charging current comprises:
and calculating to obtain the maximum charging power based on the output maximum charging current, and charging the external equipment through the maximum charging power.
9. A vehicle charging device, characterized by comprising:
the identification unit is used for identifying the magnitude of the current received by the dry contact; the method is particularly used for detecting the port state of the dry contact connection; the dry contact is connected with at least two ports, the states of the ports comprise opening and closing, and only one port is closed at the same time; determining a port currently connected with a dry contact point based on the port state, and obtaining the current received by the dry contact point through the connected port;
a control unit for adjusting a duty ratio of the CP clock pulse signal based on the identified current;
the current calculating unit is used for calculating according to the adjusted duty ratio to obtain the output maximum charging current; the output maximum charging current is less than the identified current;
and the charging unit is used for charging the external equipment based on the output maximum charging current.
10. The apparatus according to claim 9, wherein the identification unit is specifically configured to detect a current received by the dry contact, identify the received current, and obtain a magnitude of the received current.
11. The apparatus of claim 10, further comprising:
and the detection unit is used for detecting the duty ratio of the CP clock pulse signal corresponding to the currently output maximum charging current.
12. The apparatus of claim 11, wherein the control unit comprises:
a comparison module for comparing the identified current with the currently output maximum charging current;
and the adjusting module is used for adjusting the duty ratio of the CP clock pulse signal based on the comparison result.
13. The apparatus of claim 12, wherein the adjusting module is specifically configured to increase a duty cycle of the CP clock signal when the identified current is greater than the currently output maximum charging current; and when the identified current is less than the currently output maximum charging current, reducing the duty ratio of the CP clock pulse signal.
14. The apparatus according to any of the claims 9 to 13, wherein the control unit is configured to adjust a duty cycle of the CP clock signal by a PWM pulse width modulation signal based on the identified current.
15. The apparatus according to any one of claims 9 to 13, wherein the charging unit is specifically configured to calculate a maximum charging power based on the output maximum charging current, and charge the external device with the maximum charging power.
16. The apparatus according to claim 14, wherein the charging unit is specifically configured to calculate a maximum charging power based on the output maximum charging current, and charge an external device with the maximum charging power.
17. A vehicle charging system, comprising:
at least two harness devices, a vehicle charging device and a vehicle charging interface according to any of claims 9-16;
the wire harness device is used for communicating a power supply and the vehicle charging device;
the vehicle charging device is used for converting the current received by the wire harness device into the maximum charging current and charging the vehicle through the vehicle charging interface based on the maximum charging current.
18. The system of claim 17, wherein the vehicle charging device is further configured to identify the wiring harness device based on the received current; the current output by each wire harness device is different in magnitude.
CN201711041281.5A 2017-10-30 2017-10-30 Vehicle charging method, device and system Active CN107825979B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711041281.5A CN107825979B (en) 2017-10-30 2017-10-30 Vehicle charging method, device and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711041281.5A CN107825979B (en) 2017-10-30 2017-10-30 Vehicle charging method, device and system

Publications (2)

Publication Number Publication Date
CN107825979A CN107825979A (en) 2018-03-23
CN107825979B true CN107825979B (en) 2020-07-21

Family

ID=61651140

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711041281.5A Active CN107825979B (en) 2017-10-30 2017-10-30 Vehicle charging method, device and system

Country Status (1)

Country Link
CN (1) CN107825979B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108288735B (en) * 2018-04-04 2024-02-06 深圳市元创时代科技有限公司 Power source wake-up control circuit of electric automobile
CN110143153A (en) * 2019-04-18 2019-08-20 上海电享信息科技有限公司 A kind of information interacting method and system of vehicle and alternating-current charging pile
CN115241905B (en) * 2022-09-20 2022-12-09 云南丁旺科技有限公司 Ordered charging control method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04109828A (en) * 1990-08-27 1992-04-10 Matsushita Electric Works Ltd Charging circuit
KR200275514Y1 (en) * 2002-02-15 2002-05-11 신형범 Portable charging apparatus having a charging battery built-in
CN101515724A (en) * 2008-02-20 2009-08-26 中兴通讯股份有限公司 Charge/discharge method for storage battery and system
CN102946131B (en) * 2012-11-30 2014-11-26 矽力杰半导体技术(杭州)有限公司 Adaptive input power charger and method for controlling input current of charger
CN103199600B (en) * 2013-04-03 2015-04-08 深圳晶福源科技股份有限公司 Charge control circuit and charge control method
CN106972566B (en) * 2017-04-11 2019-05-31 深圳市华星光电技术有限公司 Battery charger and method for charging batteries

Also Published As

Publication number Publication date
CN107825979A (en) 2018-03-23

Similar Documents

Publication Publication Date Title
CN107825979B (en) Vehicle charging method, device and system
US20170229872A1 (en) Inverter pre-charge circuit
CN106329689B (en) Adapter and method for realizing charging thereof
CN104578277B (en) For the method for charging for electronic equipment and electronic equipment
CN104538996B (en) Mobile terminal and its matching and recognition method with charging unit
CN112744102B (en) Vehicle charging control method and device, vehicle and storage medium
CN103595105A (en) Device and method for controlling charging on vehicle
CN103887852A (en) Charging method and charging device
KR20210007718A (en) V2v charging cable and method thereof
EP3790103B1 (en) Battery pack heater and control method for dual-vehicle heating
WO2016109784A1 (en) Automatically sensing a type of charging cable and setting maximum amperage output of an electric vehicle charging station accordingly
EP3042432B1 (en) Method and apparatus for charging a battery
CN108899957A (en) A kind of robot and its power-supplying circuit
CN103311987A (en) Charging gun connection status discrimination circuit based on PWM (pulse width modulation) signal level comparison
US9570933B2 (en) Charging system having active error correction for rechargeable batteries
CN208224463U (en) A kind of program control type electronic load device that can generate voltage output
CN109167358B (en) Load operation program switching device and method
CN201813142U (en) Full-electronic open-phase protection controller
CN104423275A (en) System voltage control device, method and terminal
CN208971121U (en) Short circuit protective circuit of motor controller, motor control assembly and electric car
CN206193467U (en) Intelligent control switch
CN102608470B (en) Judge the method and system of stability of active power filer
CN106300359B (en) A kind of realizing bidirectional electric energy flow type intelligent socket and its operation method
CN206524494U (en) A kind of intelligent sub-control socket
CN105094266A (en) Battery protection system and battery protection method

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
GR01 Patent grant
GR01 Patent grant