CN110861512A - Charging control device, charger and vehicle - Google Patents

Charging control device, charger and vehicle Download PDF

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Publication number
CN110861512A
CN110861512A CN201911187775.3A CN201911187775A CN110861512A CN 110861512 A CN110861512 A CN 110861512A CN 201911187775 A CN201911187775 A CN 201911187775A CN 110861512 A CN110861512 A CN 110861512A
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CN
China
Prior art keywords
charging
signal
control device
resistor
processing circuit
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Withdrawn
Application number
CN201911187775.3A
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Chinese (zh)
Inventor
赵玉良
牛胜福
姜辛
周毅
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Shanghai Yuancheng Automobile Technology Co Ltd
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Shanghai Yuancheng Automobile Technology Co Ltd
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Priority to CN201911187775.3A priority Critical patent/CN110861512A/en
Publication of CN110861512A publication Critical patent/CN110861512A/en
Withdrawn legal-status Critical Current

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    • 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
    • B60L53/14—Conductive 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
    • B60L53/10—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
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • 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
    • B60L53/66—Data transfer between charging stations and vehicles
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling 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
    • Y02T10/70—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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Abstract

The invention provides a charging control device, a charger and a vehicle, wherein the device comprises a signal processing circuit, a controller, a timing awakening module and a power supply module; the signal processing circuit is externally connected with a charging device; the signal processing circuit is used for converting the control pilot signal into an output signal of a single rising edge when the control pilot signal is received from the charging equipment; the controller is used for judging whether the current charging mode is the reserved charging mode or not when the output signal is received from the signal processing circuit, and controlling the charging control device to enter a dormant state if the current charging mode is the reserved charging mode; the timing awakening module is used for awakening the charging control device to initiate a charging handshake request to the charging equipment when preset charging time is reached in a reserved charging mode; the power module is used for providing power for the signal processing circuit, the controller and the timing wake-up module. The invention can reduce the low-voltage power consumption of the charging control device in the process of reserving charging waiting and save more energy.

Description

Charging control device, charger and vehicle
Technical Field
The invention relates to the technical field of charging, in particular to a charging control device, a charger and a vehicle.
Background
The implementation of the electric automobile reservation charging mode is beneficial to a user to autonomously select specific time for charging, and the peak time of power utilization can be avoided. The electric vehicle is charged at a time of a power down, such as at night. After the user uses the vehicle, insert the rifle that charges, the accessible sets up the start time that charges, charges for the vehicle automatically after the settlement time.
For the reservation charging mode, on one hand, in the reservation waiting process, because the vehicle-mounted charging controller for controlling charging is awakened by a signal accessed by an external charging gun, and the CC signal or the CP signal is effective all the time, the charging controller is in a working state all the time, so that the service life of the controller is shortened; on the other hand, the vehicle-mounted charging controller is always in a working state, low-voltage power consumption of the vehicle is increased, energy conservation is not facilitated, and resource waste is caused.
Disclosure of Invention
In view of this, the present invention provides a charging control device, a charger and a vehicle, which can reduce low-voltage power consumption of the charging control device during a charging appointment, save more energy, and facilitate prolonging a service life of a charging controller.
In a first aspect, an embodiment of the present invention provides a charge control device, including: the timing awakening device comprises a signal processing circuit, a controller, a timing awakening module and a power supply module, wherein the signal processing circuit, the controller and the timing awakening module are sequentially connected; the signal processing circuit is externally connected with a charging device; the signal processing circuit is used for converting the control pilot signal into an output signal of a single rising edge when the control pilot signal is received from the charging equipment; the controller is used for judging whether the current charging mode is the reserved charging mode or not when the output signal is received from the signal processing circuit, and controlling the charging control device to enter a dormant state if the current charging mode is the reserved charging mode; the timing awakening module is used for awakening the charging control device to initiate a charging handshake request to the charging equipment when preset charging time is reached in a reserved charging mode; the power module is used for providing power for the signal processing circuit, the controller and the timing wake-up module.
In a preferred embodiment of the present invention, the signal processing circuit includes a signal input unit, a signal conversion unit and a comparison output unit; the signal input unit is connected with the signal conversion unit through a first connection point, and the signal conversion unit is connected with the comparison output unit through a second connection point; the signal input unit is used for receiving a control guide signal from the charging equipment and dividing the control guide signal; the signal conversion unit is used for receiving the divided control pilot signal from the signal input unit and converting the divided control pilot signal into a constant level signal; the comparison output unit is used for receiving the level signal from the signal conversion unit and comparing the level signal with a preset reference level; if the level signal is less than the reference level, outputting a low level; if the level signal is greater than the reference level, a high level is output.
In a preferred embodiment of the present invention, the signal input unit includes a first resistor and a second resistor; two ends of the first resistor are respectively connected with the signal output end and the first connecting point of the charging equipment; the two ends of the second resistor are respectively connected with the first connecting point and the grounding point.
In a preferred embodiment of the present invention, the signal conversion unit includes: the circuit comprises a first operational amplifier, a second operational amplifier, a diode, a third resistor, a fourth resistor and a capacitor; the non-inverting input end of the first operational amplifier is connected with the first connecting point, and the inverting input end and the output end of the first operational amplifier are both connected with the anode of the diode; the negative electrode of the diode is connected with the non-inverting input end of the second operational amplifier through a third resistor; the inverting input end and the output end of the second operational amplifier are both connected with a second connection point; the non-inverting input end of the second operational amplifier is connected with the grounding point through a fourth resistor and a capacitor respectively.
In a preferred embodiment of the present invention, the comparison output unit includes: the comparator, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a ninth resistor; the non-inverting input end of the comparator is connected with the second connection point through a fifth resistor; the inverting input end of the comparator is connected with the grounding point through a ninth resistor; two ends of the sixth resistor are respectively connected with the non-inverting input end of the comparator and the output end of the comparator; two ends of the seventh resistor are respectively connected with the output end of the comparator and the power supply end of the timing awakening module; two ends of the eighth resistor R8 are respectively connected to the inverting input terminal of the comparator and the power supply terminal of the timing wake-up module.
In a preferred embodiment of the present invention, the controller is further externally connected to a charger; the controller is also used for controlling the charger to enter a dormant state if the current charging mode is judged to be the reserved charging mode when the output signal is received from the signal processing circuit.
In a preferred embodiment of the present invention, the power module is a power management system, and the power management system is in communication connection with the controller through a serial peripheral interface.
In a preferred embodiment of the present invention, the timing wake-up module is an RTC timing circuit; the RTC timing circuit is used for outputting a high level signal to wake up the charging control device when the preset charging time is reached.
In a second aspect, an embodiment of the present invention further provides a charger, including: the charger main part to and above-mentioned charge control device, this charge control device sets up in this charger main part.
In a third aspect, an embodiment of the present invention further provides an electric vehicle, including: the charging machine is electrically connected with the rechargeable equipment.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a charging control device, a charger and a vehicle, wherein the charging control device comprises: the timing awakening device comprises a signal processing circuit, a controller, a timing awakening module and a power supply module, wherein the signal processing circuit, the controller and the timing awakening module are sequentially connected; the signal processing circuit is externally connected with a charging device; the signal processing circuit is used for converting the control pilot signal into an output signal of a single rising edge when the control pilot signal is received from the charging equipment; the controller is used for judging whether the current charging mode is the reserved charging mode or not when the output signal is received from the signal processing circuit, and controlling the charging control device to enter a dormant state if the current charging mode is the reserved charging mode; the timing awakening module is used for awakening the charging control device to initiate a charging handshake request to the charging equipment when preset charging time is reached in a reserved charging mode; the power module is used for providing power for the signal processing circuit, the controller and the timing wake-up module. In the device, a periodic square wave signal sent by charging equipment is converted into a signal with a single rising edge and then is input into a controller, so that the charging control device can enter a dormant state under the condition that a control guide signal is continuously input; and by setting the timing awakening module, the charging control device can be awakened when the reserved time is up, and the charging control device enters a normal charging mode, so that the low-voltage power consumption of the charging control device in the reserved charging process is reduced, the energy is saved, and the service life of the controller is prolonged.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part may be learned by the practice of the above-described techniques of the disclosure, or may be learned by practice of the disclosure.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a scene of performing scheduled charging on an electric vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a charging control apparatus according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a signal processing circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of power management connection of a charging control apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a comparison between a pilot signal before and after processing according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a charger according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Icon: 100-electric vehicle; 110-a charging pile; 11-a charge controller; 12-vehicle charger; 13-an on-board battery pack; 200-a charge control device; 210-a charging device; 21-a signal processing circuit; 22-a controller; 23-a timed wake-up module; 24-a power supply module; 31-a signal input unit; 32-a signal conversion unit; 33-a comparison output unit; 301-a first connection point; 302-a second connection point; 41-power management system; 42-RTC timing circuit; 61-a charger; 610-charger main body; 70-a vehicle; 71-chargeable devices.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, which is a schematic view of a scene of performing scheduled charging on an electric vehicle according to an embodiment of the present invention, wherein the electric vehicle 100 is electrically connected to a charging pile 110, and is charged through the charging pile 110. As shown in fig. 1, the electric vehicle 100 is provided with a charging controller 11, a vehicle-mounted charger 12 and a vehicle-mounted battery pack 13 which are electrically connected in sequence, and the charging pile 110 is respectively connected with the charging controller 11 and the vehicle-mounted charger 12. When charging is required, the user selects a corresponding charging mode, which generally includes a normal charging mode and a reserved charging mode, on the interactive interface of the electric vehicle 100. Taking the setting as the reserved charging mode as an example, after the user inserts the charging gun on the charging post 110 side into the charging interface of the electric vehicle 100, the charging controller 11 will detect the control guidance signal sent by the charging post 110, and wake up the charging controller 11 and the vehicle-mounted charger 12, and when the reserved time arrives, the charging is performed.
However, in the above-mentioned reservation charging method, the charging controller 11 and the vehicle-mounted charger 12 are always in the working state in the process of waiting for the reservation time to reach, which may cause energy waste and shorten the service life of the charging controller 11. Based on this, the charging control device, the charger and the vehicle provided by the embodiment of the invention can be applied to various scenes in which the rechargeable device needs to be charged.
For the convenience of understanding the present embodiment, a detailed description will be given of a charging control device disclosed in the present embodiment.
As shown in fig. 2, which is a schematic structural diagram of a charging control device, as can be seen from fig. 2, the charging control device 200 includes a signal processing circuit 21, a controller 22, and a timed wake-up module 23, which are connected in sequence, and further includes a power module 24 connected to the signal processing circuit 21, the controller 22, and the timed wake-up module 23, respectively, where the power module 24 is configured to provide power to the signal processing circuit 21, the controller 22, and the timed wake-up module 23.
The signal processing circuit 21 is also externally connected with a charging device 210, the charging device 210 is in communication connection with the charging control apparatus 200, and the charging control apparatus 200 charges the device to be charged after establishing a charging handshake protocol with the charging device 210. Here, the charging device 210 may be a charging pile, a charging station, or the like, and may be an ac charging device or an ac/dc charging device. The device to be charged may be a rechargeable battery such as a battery pack, a storage battery, or a lithium battery, or may be a mechanical device including the rechargeable battery, for example: electric motorcycles, electric automobiles, electric ships, and the like.
In practical operation, the charging control apparatus 200 may be provided independently of the device to be charged, or may be provided integrally with the device to be charged. Also, the signal processing circuit 21 is configured to convert a Control Pilot (CP) signal into an output signal with a single rising edge when the CP signal is received from the charging device 210. Here, taking the charging device 210 as an ac charging post as an example, when a charging gun on one side of the ac charging post is inserted into a charging interface of the device to be charged, the ac charging post sends a control pilot signal to the charging control device 200, and the control pilot signal is usually a Pulse Width Modulation (PWM) signal, where the PWM signal is a square wave signal with an adjustable duty ratio.
For the power module 24 in the charging control device 200, when a rising edge signal is input, the power module 24 will be woken up. The square wave signal is a signal with a periodic rising edge, and if the CP signal is not processed, in the case of the scheduled charging, the power module 24 cannot be kept in the sleep state due to continuous reception of the rising edge signal in the process of waiting for the arrival of the charging time.
Here, by providing the signal processing circuit 21, converting the signal into a signal having only one rising edge, and inputting the signal into the power module 24, the power module 24 can be awakened by the rising edge signal, and does not continue to receive the rising edge signal, so that the power module 24 can be maintained in the sleep state without being awakened during the waiting time for the charging time to arrive.
In addition, for the power module 24, when the power module 24 receives the output signal after the signal conversion from the signal processing circuit 21, the power module is awakened by the rising edge signal, at this time, the controller 22 determines whether the current charging mode is the reserved charging mode, and if so, controls the charging control device 200 to enter the sleep state. Here, the current charging mode is set in advance by the user. Also, the sleep state means that the controller 22, the power module 24, and the like enter a low power consumption mode in which the controller 22 does not perform a charging handshake with the charging device 210. In addition, in other possible embodiments, the user may also set the current charging mode to be the normal charging mode, and at this time, the controller 22 performs the charging handshake with the charging device 210 to perform the charging in time.
In the charging control apparatus 200, the timing wake-up module 23 is configured to wake up the charging control apparatus 200 to initiate a charging handshake request to the charging device 210 when a preset charging time is reached in a reserved charging mode. Here, the timed wake-up module 23 may wake up the charging control device 200 by outputting a high level signal to the charging control device 200, and in one possible embodiment, when the charging time is reached, the timed wake-up module 23 outputs a high level signal to the power module 24 to wake up the power module 24 first, and then wake up the controller 22 and other components in the charging control device 200.
Thus, the charging control device 200 provided in this embodiment performs conversion processing on the control pilot signal, so as to overcome the problem that the controller 22 cannot enter the sleep state because it continuously receives the rising edge wake-up signal in the process of waiting for charging, and enable the charging control device 200 to enter the sleep state; and, when the reserved time is reached, the charging control device 200 can be waken up by the timing wake-up module 23 and enter a normal charging mode, so that the energy consumption of the charging control device 200 during the charging waiting period is saved, and the service life of the controller 22 is prolonged.
In another possible embodiment, the controller 22 is further externally connected with a charger, and the charger is electrically connected to the charging device 210, where when the controller 22 controls the charging control apparatus 200 to enter the sleep state, the controller also sends a sleep command to the charger to control the charger to enter the sleep state, so as to further save energy.
The embodiment of the invention provides a charging control device, which comprises: the timing awakening device comprises a signal processing circuit, a controller, a timing awakening module and a power supply module, wherein the signal processing circuit, the controller and the timing awakening module are sequentially connected; the signal processing circuit is externally connected with a charging device; the signal processing circuit is used for converting the control pilot signal into an output signal of a single rising edge when the control pilot signal is received from the charging equipment; the controller is used for judging whether the current charging mode is the reserved charging mode or not when the output signal is received from the signal processing circuit, and controlling the charging control device to enter a dormant state if the current charging mode is the reserved charging mode; the timing awakening module is used for awakening the charging control device to initiate a charging handshake request to the charging equipment when preset charging time is reached in a reserved charging mode; the power module is used for providing power for the signal processing circuit, the controller and the timing wake-up module. In the device, a periodic square wave signal sent by charging equipment is converted into a signal with a single rising edge and then is input into a controller, so that the charging control device can enter a dormant state under the condition that a control guide signal is continuously input; and by setting the timing awakening module, the charging control device can be awakened and enters a normal charging mode when the reserved time is up, so that the low-voltage power consumption of the charging control device in the reserved charging process is reduced, the energy is saved, and the service life of the controller is prolonged.
On the basis of the charging control device shown in fig. 1, the present embodiment focuses on a specific implementation manner of the signal processing circuit in the device. Referring to fig. 3, it is a schematic circuit diagram of a signal processing circuit, wherein the signal processing circuit includes a signal input unit 31, a signal conversion unit 32 and a comparison output unit 33, and the signal input unit 31 and the signal conversion unit 32 are connected through a first connection point 301, and the signal conversion unit 32 and the comparison output unit 33 are connected through a second connection point 302.
In the embodiment shown in fig. 3, the signal input unit 31 is configured to receive a control pilot signal from the charging device and divide the control pilot signal. Here, the signal input unit 31 includes a first resistor R1 and a second resistor R2, and both ends of the first resistor R1 are connected to the signal output terminal of the charging device and the first connection point 301, respectively, and both ends of the second resistor R2 are connected to the first connection point 301 and the ground point, respectively.
Next, the signal conversion unit 32 in the signal processing circuit is configured to receive the divided control pilot signal from the signal input unit 31 and convert the divided control pilot signal into a constant level signal. In the present embodiment, the signal conversion unit 32 includes: the circuit comprises a first operational amplifier U1, a second operational amplifier U2, a diode D1, a third resistor R3, a fourth resistor R4 and a capacitor C1. The non-inverting input terminal of the first operational amplifier U1 is connected to the first connection point 301, and the inverting input terminal and the output terminal of the first operational amplifier U1 are both connected to the anode of the diode D1. The cathode of the diode D1 is connected to the non-inverting input terminal of the second operational amplifier U2 through a third resistor R3; the inverting input and output of the second operational amplifier U2 are both connected to the second connection point 302; the non-inverting input terminal of the second operational amplifier U2 is connected to ground through a fourth resistor R4 and a capacitor C1, respectively.
In addition, the comparison output unit 33 is configured to receive the level signal from the signal conversion unit 32, and compare the level signal with a preset reference level, wherein if the level signal is less than the reference level, a low level is output; if the level signal is greater than the reference level, a high level is output. In this embodiment, the comparison output unit 33 includes: the circuit comprises a comparator U3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 and a ninth resistor R9. The non-inverting input end of the comparator U3 is connected to the second connection point 302 through a fifth resistor R5; the inverting input end of the comparator U3 is connected with the grounding point through a ninth resistor R9; two ends of the sixth resistor R6 are respectively connected with the non-inverting input end of the comparator U3 and the output end of the comparator U3; two ends of the seventh resistor R7 are respectively connected with the output end of the comparator U3 and the power supply end of the timing awakening module; two ends of the eighth resistor R8 are respectively connected to the inverting input terminal of the comparator U3 and the power supply terminal of the timing wake-up module.
In this embodiment, the timing wake-up module of the charging control device is a RTC (Real Time Clock) timing circuit, and the RTC timing circuit 42 is configured to output a high level signal to wake up the charging control device when a preset charging Time is reached. Here, the RTC timing circuit 42 is also communicatively coupled to the controller.
In addition, in the present embodiment, the power supply module of the charging control device is a power supply management system 41, and the power supply management system 41 is connected to the controller in a communication manner through a Serial Peripheral Interface (Serial Peripheral Interface). Referring to fig. 4, it is a schematic diagram of power management connection of the charging control apparatus provided in this embodiment, wherein the power management system 41 provides power to the controller, the RTC timing circuit 42, the communication module, and the sensor respectively, and corresponds to VCC _ UC, VCC _ RTC, VCC _ COM, and VCC _ SNS in the figure respectively.
Taking charging of an electric vehicle as an example, when a charging gun is inserted into a vehicle-mounted charging interface, a CP _ input signal is input to a charging control device, and here, the duty ratio of the CP _ input signal ranges from 5% to 100%. At this time, the signal processing circuit performs conversion processing on the CP _ input signal, specifically, the CP _ input signal is divided by the first resistor R1 and the second resistor R2, then input into the first operational amplifier U1, and then charge the capacitor C1 through the resistor R3, at this time, the voltage V1 at the non-inverting input terminal of the second operational amplifier U2 continuously increases, and is input into the non-inverting input terminal of the comparator U3 through the second operational amplifier U2, at this time, the voltage V2 at the second connection point 302 gradually increases.
When the voltage at the non-inverting input terminal of the comparator U3 is lower than that at the inverting input terminal thereof (i.e. the reference level), that is, V2< Vref, the output terminal of the comparator U3 outputs a low level; when the voltage at the non-inverting input terminal of the comparator U3 is higher than that at the inverting input terminal thereof (i.e., the reference level), i.e., V2> Vref, the output terminal of the comparator U3 outputs a high level, and at this time, CP _ wakeup changes from low to high, generating a rising edge signal to wake up the charge control device. Here, referring to fig. 5, a schematic diagram of the control pilot signal before and after processing, it can be seen that after processing by the signal processing circuit, the periodic square wave is converted into a signal with only a single rising edge.
After the charging control device is awakened, the charging control device detects the current charging mode, and if the current charging mode is the direct charging mode, the charging control device awakens the vehicle-mounted charger and enters a normal charging process. If the current charging mode is the reserved charging mode, the RTC timing circuit 42 works in a timing manner, and at this time, the controller sends a sleep instruction to the power management system 41 to control the power management system 41 to enter a sleep state, and in the sleep state, the power management system 41 only outputs VCC _ RTC to supply power to the RTC timing circuit 42.
When the reserved time is reached, the RTC timing circuit 42 sends a wake-up signal to wake up the charging control device, and the charging control device wakes up the charger, thereby entering a normal charging process.
The charging control device provided by the embodiment provides a specific implementation mode of the signal processing circuit, the timing awakening module and the power module, and the device can also reduce the low-voltage power consumption of the charging control device in the reserved charging process, thereby saving more energy.
The present embodiment further provides a charger, referring to fig. 6, which is a schematic structural diagram of the charger, wherein the charger 61 includes a charger main body 610 and the charging control device, the charger main body 610 is connected to the charging control device, and the charging control device is disposed on the charger main body 610. Here, the charger 61 may be a charger installed on a vehicle, or may be a charger installed on other mechanical equipment, such as a ship, a motorcycle, etc., to charge a chargeable component on the mechanical equipment.
The charger provided by the embodiment of the invention has the same technical characteristics as the charging control device provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
In addition, the embodiment also provides a vehicle, referring to fig. 7, which is a schematic structural diagram of the vehicle, and as seen from fig. 7, the vehicle 70 includes a chargeable device 71, and the above-mentioned charger 61, and the charger 61 is electrically connected with the chargeable device 71. In practical operation, the vehicle 70 can reserve the rechargeable device 71 for charging by the charger 61, and during the reservation waiting period, the charger 61 enters the sleep state, so as to save energy. Here, the rechargeable device 71 may be a rechargeable battery such as a battery pack, a secondary battery, a lithium battery, or other rechargeable components. When the chargeable device 71 is a battery pack, the vehicle 70 may be an electric vehicle, a hybrid gas-electric vehicle, or the like.
The vehicle provided by the embodiment of the invention has the same implementation principle and technical effects as those of the foregoing charging control device embodiment, and for the sake of brief description, no part of the vehicle embodiment is mentioned, and reference may be made to the corresponding contents in the foregoing charging control device embodiment.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A charge control device, characterized by comprising: the timing awakening device comprises a signal processing circuit, a controller, a timing awakening module and a power module, wherein the signal processing circuit, the controller and the timing awakening module are sequentially connected with one another; the signal processing circuit is externally connected with a charging device;
the signal processing circuit is used for converting a control pilot signal into an output signal of a single rising edge when the control pilot signal is received from the charging equipment;
the controller is used for judging whether the current charging mode is a reserved charging mode or not when the output signal is received from the signal processing circuit, and controlling the charging control device to enter a dormant state if the current charging mode is the reserved charging mode;
the timing awakening module is used for awakening the charging control device to initiate a charging handshake request to the charging equipment when preset charging time is reached in the reserved charging mode;
the power module is used for providing power for the signal processing circuit, the controller and the timing awakening module.
2. The charge control device according to claim 1, wherein the signal processing circuit includes a signal input unit, a signal conversion unit, and a comparison output unit; the signal input unit is connected with the signal conversion unit through a first connection point, and the signal conversion unit is connected with the comparison output unit through a second connection point;
the signal input unit is used for receiving the control guide signal from the charging equipment and dividing the voltage of the control guide signal;
the signal conversion unit is used for receiving the divided control pilot signal from the signal input unit and converting the divided control pilot signal into a constant level signal;
the comparison output unit is used for receiving the level signal from the signal conversion unit and comparing the level signal with a preset reference level; outputting a low level if the level signal is less than the reference level; and if the level signal is greater than the reference level, outputting a high level.
3. The charge control device according to claim 2, wherein the signal input unit includes a first resistor and a second resistor;
two ends of the first resistor are respectively connected with the signal output end of the charging equipment and the first connecting point;
and two ends of the second resistor are respectively connected with the first connecting point and the grounding point.
4. The charge control device according to claim 2, wherein the signal conversion unit includes: the circuit comprises a first operational amplifier, a second operational amplifier, a diode, a third resistor, a fourth resistor and a capacitor;
the non-inverting input end of the first operational amplifier is connected with the first connecting point, and the inverting input end and the output end of the first operational amplifier are both connected with the anode of the diode;
the negative electrode of the diode is connected with the non-inverting input end of the second operational amplifier through the third resistor;
the inverting input end and the output end of the second operational amplifier are both connected with the second connection point;
and the non-inverting input end of the second operational amplifier is connected with the grounding point through the fourth resistor and the capacitor respectively.
5. The charge control device according to claim 2, wherein the comparison output unit includes: the comparator, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a ninth resistor;
the non-inverting input end of the comparator is connected with the second connection point through the fifth resistor; the inverting input end of the comparator is connected with the grounding point through the ninth resistor;
two ends of the sixth resistor are respectively connected with the non-inverting input end of the comparator and the output end of the comparator;
two ends of the seventh resistor are respectively connected with the output end of the comparator and the power supply end of the timing awakening module;
and two ends of the eighth resistor are respectively connected with the inverting input end of the comparator and the power supply end of the timing awakening module.
6. The charging control device of claim 1, wherein the controller is further externally connected with a charger; and the controller is also used for controlling the charger to enter a dormant state if the current charging mode is judged to be the reserved charging mode when the output signal is received from the signal processing circuit.
7. The charging control device of claim 1, wherein the power module is a power management system, and the power management system is communicatively coupled to the controller via a serial peripheral interface.
8. The charging control device of any one of claims 1-7, wherein the timed wake-up module is an RTC timing circuit; the RTC timing circuit is used for outputting a high level signal to wake up the charging control device when the preset charging time is up.
9. A charger, characterized by, includes: the charger main body and the charging control device of any one of claims 1 to 8, wherein the charging control device is arranged on the charger main body.
10. A vehicle, characterized by comprising: a rechargeable device, and the charger of claim 9, electrically connected to the rechargeable device.
CN201911187775.3A 2019-11-27 2019-11-27 Charging control device, charger and vehicle Withdrawn CN110861512A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113056387A (en) * 2021-03-26 2021-06-29 华为技术有限公司 Charging control device and method and electric automobile
CN113103884A (en) * 2021-04-22 2021-07-13 联合汽车电子有限公司 Wake-up signal generating circuit and vehicle charging system
CN113829991A (en) * 2021-08-17 2021-12-24 江铃汽车股份有限公司 Control method and system for gear lamp in charging mode
CN114384811A (en) * 2020-10-19 2022-04-22 九阳股份有限公司 Household appliance and low-power-consumption implementation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114384811A (en) * 2020-10-19 2022-04-22 九阳股份有限公司 Household appliance and low-power-consumption implementation method thereof
CN114384811B (en) * 2020-10-19 2023-09-05 九阳股份有限公司 Household appliance and low-power-consumption implementation method thereof
CN113056387A (en) * 2021-03-26 2021-06-29 华为技术有限公司 Charging control device and method and electric automobile
CN113103884A (en) * 2021-04-22 2021-07-13 联合汽车电子有限公司 Wake-up signal generating circuit and vehicle charging system
CN113829991A (en) * 2021-08-17 2021-12-24 江铃汽车股份有限公司 Control method and system for gear lamp in charging mode
CN113829991B (en) * 2021-08-17 2023-03-07 江铃汽车股份有限公司 Control method and system for gear lamp in charging mode

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Application publication date: 20200306