WO2020001265A1 - Procédé et dispositif de charge externe pour véhicule - Google Patents

Procédé et dispositif de charge externe pour véhicule Download PDF

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Publication number
WO2020001265A1
WO2020001265A1 PCT/CN2019/090686 CN2019090686W WO2020001265A1 WO 2020001265 A1 WO2020001265 A1 WO 2020001265A1 CN 2019090686 W CN2019090686 W CN 2019090686W WO 2020001265 A1 WO2020001265 A1 WO 2020001265A1
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WIPO (PCT)
Prior art keywords
discharge
signal
charge
power
battery pack
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PCT/CN2019/090686
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English (en)
Chinese (zh)
Inventor
庞成哲
张鑫
马爱国
王洪军
邢骁
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比亚迪股份有限公司
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Publication of WO2020001265A1 publication Critical patent/WO2020001265A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to the technical field of charging, and relates to a method and device for external charging of a vehicle.
  • the present disclosure provides a method and device for external charging of a vehicle, which are used to solve the problems of high cost and low efficiency of charging an anchor electric vehicle in the prior art.
  • a method for externally charging a vehicle includes:
  • the charge and discharge controller detects the connection signal of the discharge gun
  • the charge and discharge controller and the battery management system BMS receive a discharge on signal
  • the BMS controls the high-voltage distribution box to cause the battery pack to release DC power
  • the charge and discharge controller After the charge and discharge controller receives the connection signal and the discharge on signal, the charge and discharge controller detects whether the first signal of the discharge gun is a first rated value, and when the first signal is When the first rated value is preset, the charge and discharge controller sends a second signal to the charged vehicle; when the first signal changes from the first rated value to the preset second rated value, the charge and discharge controller The discharge controller converts the DC power released by the battery pack into AC power to charge the charged vehicle.
  • the method further includes:
  • the BMS controls the high-voltage distribution box to cut off the direct current circuit of the battery pack;
  • the charge and discharge controller stops discharging to the outside.
  • the method when the charge and discharge controller converts the DC power released by the battery pack into AC power to charge a charged vehicle, the method includes:
  • the charge and discharge controller continuously detects whether the first signal is a second rated value
  • the charge and discharge controller When the first signal is the second rated value, it is determined that the charge and discharge controller is in a normal state, and the charge and discharge controller detects the temperature of the discharge port. When the charge and discharge controller stops external discharge.
  • the BMS controlling the high-voltage distribution box to cause the battery pack to release DC power includes:
  • the BMS obtains information of multiple groups of battery packs, and determines whether there is a faulty battery pack
  • the BMS controls the non-faulty battery pack to discharge in order of the voltage value.
  • the method further includes:
  • the charge and discharge controller determines whether a first ratio of the input DC power and the output AC power is less than a preset limit. When the first ratio is less than the limit, the charge and discharge controller increases Bus voltage to suppress circulating current.
  • the first signal is a voltage value of a control confirmation CP signal in the discharge gun
  • the second signal is a signal pulse width modulation (PWM) signal
  • the first rated value is greater than the second rated value
  • the first rating value is used to indicate that the discharge gun is successfully connected to the charging gun of the charging vehicle
  • the second rating value is used to indicate that the charging vehicle is in a normal state and allows charging.
  • the BMS controlling the high-voltage distribution box to cause the battery pack to release DC power includes:
  • the BMS detects the state of the high-voltage power distribution box and the battery pack
  • the BMS controls the high-voltage power distribution box to cause the battery pack to release DC power and pre-charge the charge and discharge controller.
  • the BMS controlling the high-voltage distribution box to cause the battery pack to release DC power further includes:
  • the BMS detects the discharge power and the remaining power of the battery pack
  • the BMS controls the high-voltage distribution box to cut off a direct current circuit of a battery pack.
  • an external charging device for a vehicle including: a charge-discharge controller and a battery management system BMS;
  • the charge and discharge controller is used to detect a connection signal of the discharge gun
  • the charge-discharge controller is configured to receive a discharge-on signal when a discharge switch is turned on;
  • the BMS is configured to receive a discharge on signal when the discharge switch is turned on;
  • the BMS is used to control the high-voltage power distribution box to cause the battery pack to release DC power after receiving the discharge start signal;
  • the charge and discharge controller is configured to detect whether the first signal of the discharge gun is a first rated value after receiving the connection signal and the discharge on signal, and when the first signal is a preset first Send a second signal to the charged vehicle at the rated value; when the first signal changes from the first rated value to a preset second rated value, convert the DC power released by the battery pack to AC power to the charged vehicle Charge it.
  • the BMS is configured to control the high-voltage power distribution box to cut off a direct current circuit of the battery pack after receiving a discharge shutdown signal;
  • the charge and discharge controller is used to stop external discharge.
  • the charge and discharge controller is configured to:
  • the charge and discharge controller When the first signal is the second rated value, it is determined that the charge and discharge controller is in a normal state, and the temperature of the discharge port is detected, and when the temperature of the discharge port is greater than a preset first temperature threshold, external discharge is stopped.
  • the BMS is used for:
  • the charge and discharge controller is configured to:
  • the first signal is a voltage value of a control confirmation CP signal in the discharge gun
  • the second signal is a signal pulse width modulation (PWM) signal
  • the first rated value is greater than the second rated value
  • the first rated value is used to indicate that the discharge gun is successfully connected to the charging gun of the charged vehicle
  • the second rated value is used to indicate that the charged vehicle is in a normal state and allowed to be charged.
  • the BMS is used for:
  • the BMS is used for:
  • the high-voltage distribution box is controlled to cut off the DC power circuit of the battery pack.
  • the present disclosure is applied to a power-supply vehicle.
  • the charge-discharge controller detects a connection signal from the discharge gun, When it is turned on, the charge and discharge controller and the battery management system BMS receive a discharge on signal to indicate the discharge.
  • the BMS controls the high-voltage distribution box to release the DC power from the battery pack.
  • the charge and discharge controller receives the connection signal and the discharge on signal, Obtain the first signal in the discharge gun. When the first signal is the first rated value, send a second signal to the charging vehicle.
  • the DC power released by the bag is converted into AC power to charge the charging vehicle, which can provide the power supply vehicle with the function of a charging cabinet, so that the power of the charging vehicle can be quickly replenished, reducing the charging cost and improving the charging efficiency.
  • Fig. 1 is a flow chart showing a method for external charging of a vehicle according to an exemplary embodiment
  • Fig. 2 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment
  • Fig. 3 is a flow chart showing another method for external charging of a vehicle according to an exemplary embodiment
  • Fig. 4 is a flow chart showing another method for external charging of a vehicle according to an exemplary embodiment
  • Fig. 5 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment
  • Fig. 6 is a flow chart showing another method for external charging of a vehicle according to an exemplary embodiment
  • Fig. 7 is a flow chart showing another method for external charging of a vehicle according to an exemplary embodiment
  • Fig. 8 is a block diagram of an external charging device for a vehicle according to an exemplary embodiment
  • Fig. 9 is a connection relationship diagram of an external charging device of a vehicle according to an exemplary embodiment.
  • both the powered vehicle and the charged vehicle can be any kind of power battery.
  • the device can be, for example, an electric vehicle, such as an electric vehicle, not limited to a pure electric vehicle or a hybrid vehicle.
  • the power-supply vehicle and the charging vehicle include: BMS (English: Battery Management System, Chinese: Battery Management System), charging and discharging Controller, charging port, discharge port, discharge gun and high-voltage distribution box, discharge switch and other modules.
  • the charge-discharge controller may be a V2G (English: Vehicle-to-grid) controller.
  • the power-supply vehicle and the charging vehicle are both electric buses as an example.
  • Fig. 1 is a flowchart illustrating a method for external charging of a vehicle according to an exemplary embodiment. As shown in Fig. 1, the method includes:
  • Step 101 The charge and discharge controller detects a connection signal of the discharge gun.
  • a vehicle as a power supply vehicle discharges externally.
  • the charge and discharge controller collects signals from the discharge gun.
  • the signals in the discharge gun may include:
  • the CC signal represents the CP signal for control confirmation, the PE signal for protective earth, the N signal for the neutral line, and the L1, L2, and L3 signals for three-phase AC power.
  • the charge and discharge controller can detect the connection signal sent by the discharge gun to confirm that the discharge gun has been connected to the charging vehicle.
  • the charge and discharge controller and BMS are powered on.
  • step 102 when the discharge switch is turned on, the charge and discharge controller and the battery management system BMS receive a discharge on signal.
  • the user can control the discharge switch by inputting a discharge on command (such as a switch on the dashboard or an option on the touch screen) on the control panel of the powered vehicle.
  • a discharge on command such as a switch on the dashboard or an option on the touch screen
  • the vehicle can also control the discharge switch on its own. After being turned on, the BMS and the charge and discharge controller receive a discharge on signal.
  • the discharge switch can be turned on first, and a discharge on signal is sent to the BMS and the charge and discharge controller, and then waits for discharge.
  • the connection signal for the connection between the gun and the charging vehicle.
  • the drive module performs power-on operations on the charge and discharge controller and the BMS.
  • step 103 after the BMS receives the discharge start signal, the BMS controls the high-voltage power distribution box to cause the battery pack to release DC power.
  • the BMS can start to enter a discharge-ready mode, that is, control the high-voltage power distribution box to cause the battery pack to release DC power.
  • Step 104 After the charge and discharge controller receives the connection signal and the discharge on signal, the charge and discharge controller detects whether the first signal of the discharge gun is a first rated value. When the first signal is a preset first rated value, The charge and discharge controller sends a second signal to the charged vehicle. When the first signal changes from the first rated value to a preset second rated value, the charge and discharge controller converts the DC power released by the battery pack into AC power to charge the charged vehicle.
  • the charge-discharge controller can start to enter the discharge-ready mode. Based on the signal in the discharge gun, control the charge-discharge controller to convert the DC power released by the battery pack into AC power. It is transmitted to the charging vehicle through the discharge port. For example, the voltage value of the first signal (for example, the CP signal) in the discharge gun can be detected. When the CP signal is the first rated value (for example, 9V), it can be determined that the powered vehicle can be used as a charging device, and the charge and discharge control The device sends a second signal (for example, a square wave signal) to the charged vehicle, which is used to inform the charged vehicle of the power supply information of the vehicle.
  • a second signal for example, a square wave signal
  • the charge and discharge controller converts the DC power released by the high-voltage power distribution box into AC power.
  • the vehicle in this embodiment may further include modules such as a vehicle controller, an ECU (English: Electronic Control Unit, Chinese: electronic control unit), and the like, which are used to control communication between various modules of the powered vehicle, and can To manage the collected signals, communication can be realized through CAN (English: Controller Area Network, Chinese: Controller Area Network) bus, LIN (English: Local Interconnect Network, Chinese: Local Internet) bus, or hard wire.
  • CAN International: Controller Area Network, Chinese: Controller Area Network
  • LIN English: Local Interconnect Network, Chinese: Local Internet
  • hard wire for example, you can Discharge the discharge start signal through the CAN bus, or the connection signal of the discharge gun and the signal in the discharge gun through hard wires.
  • the present disclosure is applied to a power-supply vehicle.
  • the charge-discharge controller detects a connection signal from the discharge gun, When it is turned on, the charge and discharge controller and the battery management system BMS receive a discharge on signal to indicate the discharge.
  • the BMS controls the high-voltage distribution box to release the DC power from the battery pack.
  • the charge and discharge controller receives the connection signal and the discharge on signal, Obtain the first signal in the discharge gun.
  • the first signal is the first rated value
  • the first signal changes from the first rated value to the preset second rated value, change the battery.
  • the DC power released by the bag is converted into AC power to charge the charging vehicle, which can provide the power supply vehicle with the function of a charging cabinet, so that the power of the charging vehicle can be quickly replenished, reducing the charging cost and improving the charging efficiency.
  • Fig. 2 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment. As shown in Fig. 2, the method includes:
  • step 105 after receiving the discharge shutdown signal, the BMS controls the high-voltage distribution box to cut off the direct current circuit of the battery pack.
  • step 106 the charge / discharge controller stops external discharge.
  • the discharge shutdown signal may be input by a user through a control panel on the powered vehicle, actively controlling the powered vehicle to stop discharging to the charging vehicle, and stopping the powered vehicle from discharging to the charged vehicle.
  • the BMS and the charge / discharge controller receive the discharge shutdown signal, the BMS controls the high-voltage distribution box to cut off the DC circuit of the battery pack.
  • the charge / discharge controller turns off the internal switching devices, cuts off the circuit on the AC side (that is, the discharge port side), and stops. Discharge to the outside.
  • Fig. 3 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment. As shown in Fig. 3, step 104 includes:
  • Step 1041 The charge / discharge controller continuously detects whether the first signal is a second rated value.
  • step 1042 when the first signal is not the second rated value, it is determined that the charge-discharge controller is in an abnormal state, and the charge-discharge controller stops external discharge.
  • Step 1043 when the first signal is the second rated value, it is determined that the charge and discharge controller is in a normal state, the charge and discharge controller detects the temperature of the discharge port, and when the temperature of the discharge port is greater than a preset first temperature threshold, the charge and discharge control The device stops discharging to the outside.
  • the charge-discharge controller continuously monitors the state of the first signal.
  • the first signal is not the second rated value, it indicates that the charge-discharge controller is in an abnormal state, that is, the power-supply vehicle.
  • the charge and discharge controller turns off the internal switching device, cuts off the circuit on the AC side (that is, the discharge port side), stops external discharge, and can further control the high-voltage distribution box through BMS. Cut off the DC circuit of the battery pack.
  • the first signal When the first signal is the second rated value, it indicates that when the charge and discharge controller is in a normal state, the temperature of the discharge port (which can be obtained by a temperature sensor provided at the discharge port) and the signal state in the discharge gun are obtained. Any abnormality in the temperature of the discharge port and the signal status in the discharge gun also indicates that the power supply vehicle has failed and cannot continue to discharge to the charged vehicle.
  • the charge and discharge controller turns off the internal switching device and cuts off the AC side (that is, the discharge Port side), stop external discharge, and cut off the DC circuit of the battery pack through the BMS control high-voltage distribution box.
  • the temperature of the discharge port is greater than a preset first temperature threshold (for example, it can be set based on a large amount of experimental data or adjusted according to the specific charging situation of the vehicle), indicating that the temperature of the discharge port is abnormal, and the signal in the discharge gun For example, the voltage value of the CC signal or CP signal exceeds the preset range, which indicates that the signal state in the discharge gun is abnormal.
  • a preset first temperature threshold for example, it can be set based on a large amount of experimental data or adjusted according to the specific charging situation of the vehicle
  • the temperature of the charging port can also be monitored in real time by setting a temperature sensor on the charging port.
  • the temperature of the charging port can be controlled by adjusting the charging current. This can be achieved, for example, by the following steps:
  • the preset correspondence between temperature and current is used to control the charging and discharging controller of the charged vehicle to adjust the charging current It is a target current value corresponding to the temperature of the charging port.
  • the charging current can be adjusted to stabilize the charging process. For example: control the charging current to fall with a certain slope as the temperature of the charging port rises.
  • the temperature of the charging port is greater than the temperature threshold of the first charging port, it indicates that the temperature of the charging port is abnormal.
  • the temperature of the charging port is always greater than the temperature threshold of the first charging port, then the charge and discharge controller that controls the charging vehicle turns off the internal switching device and cuts off the circuit on the AC side (that is, the discharging port side).
  • the charging and discharging controller of the charged vehicle may be controlled to open the charging port again, and the charging current may be controlled to rise at a certain slope until the normal charging state is restored.
  • Fig. 4 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment. As shown in Fig. 4, step 103 includes:
  • Step 1031 The BMS obtains information of multiple battery packs, and determines whether there is a faulty battery pack.
  • step 1032 the BMS controls the non-faulty battery pack to discharge in order of the voltage value.
  • the BMS can first obtain the information of multiple groups of battery packs (for example, an information acquisition device such as a sensor can be provided on each group of battery packs to collect the battery status and battery voltage of each group of battery packs) To determine the status of the battery pack), and determine which of the multiple battery packs are faulty battery packs and which are non-faulty battery packs.
  • the discharge sequence of multiple battery packs can be discharged according to the single-cell voltage value of the non-faulty battery pack, that is, the battery pack with a high single-cell voltage is discharged first.
  • Group C is discharged at the same time to achieve the purpose of voltage balancing of multiple groups of battery packs.
  • Fig. 5 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment. As shown in Fig. 5, the method further includes:
  • step 107 the charge-discharge controller determines whether the first ratio of the input DC-side power and the output AC-side power is less than a preset limit. When the first ratio is less than the limit, the charge-discharge controller increases the bus voltage to suppress Circulation.
  • electric buses are usually equipped with two charge and discharge controllers because of their high power consumption.
  • a total of four charge and discharge controllers participate in the charging process, which can achieve At the same time of high-power charging, circulating current problems are also prone to occur (When the bus voltage of the charge and discharge controller on one side is much higher than the bus voltage of the charge and discharge controller on the other side, the current flows from the high-voltage charge-discharge controller to the low-voltage charge and discharge controller. Discharge controller), causing irreversible damage to the hardware of the charge and discharge controller.
  • the charge-discharge controller includes a first charge-discharge controller and a second charge-discharge controller, and first calculates a first ratio of the input DC-side power and the output AC-side power of the first charge-discharge controller. , And the second ratio of the input DC power and the output AC power of the second charge and discharge controller, when the signal power ratio between the DC and AC sides is less than a preset limit (for example, it can be 0.85), It is determined that a circulating current has occurred, and the circulating current can be suppressed by increasing the bus voltage of the side charge-discharge controller to avoid hardware damage of the charge-discharge controller.
  • a preset limit for example, it can be 0.85
  • a third charge-discharge controller and a fourth charge-discharge controller may be included at the end of the charging vehicle.
  • a third ratio of the DC-side power output from the third charge-discharge controller to the input AC-side power is calculated.
  • a preset limit for example 0.85
  • the first signal is a voltage value of a control confirmation CP signal in the discharge gun.
  • the second signal is a PWM (English: Pulse Width Modulation, Chinese: Signal Pulse Width Modulation) signal to inform the charged vehicle of the power supply of the vehicle.
  • PWM Pulse Width Modulation
  • Chinese Signal Pulse Width Modulation
  • the duty of the PWM signal is controlled to indicate the powered vehicle. Battery information.
  • the first rated value is greater than the second rated value.
  • the first rated value may be 9V, and the second rated value may be 6V.
  • the first rated value is used to indicate that the discharge gun is successfully connected to the charging gun of the charged vehicle
  • the second rated value is used to indicate that the charged vehicle is in a normal state and allowed to be charged.
  • Fig. 6 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment. As shown in Fig. 6, step 103 includes:
  • Step 1033 The BMS detects the status of the high-voltage power distribution box and the battery pack.
  • step 1034 when the high-voltage power distribution box and the battery pack are in a non-fault state, the BMS controls the high-voltage power distribution box to cause the battery pack to release DC power, and precharge the battery pack and discharge controller.
  • the BMS controls the high voltage distribution box to make the battery pack release DC power. Before, the state of the high-voltage distribution box and the battery pack were detected. When the high-voltage distribution box is in a fault state or the battery pack is in a fault state, BMS controls the high-voltage distribution box to cut off the DC circuit of the battery pack.
  • the BMS controls the high-voltage distribution box to release the DC power from the battery pack, so that the DC voltage of the battery pack is added between the positive and negative poles on the DC side of the charge and discharge controller, and the charge and discharge controller is precharged. To protect the hardware of the charge and discharge controller.
  • Fig. 7 is a flowchart illustrating another external charging method for a vehicle according to an exemplary embodiment. As shown in Fig. 7, step 103 further includes:
  • step 1035 the BMS detects the discharge power and the remaining power of the battery pack.
  • Step 1036 When the discharge power is greater than a preset power threshold or the remaining power is less than a preset power threshold, the BMS controls the high-voltage power distribution box to cut off the DC power circuit of the battery pack.
  • the BMS controls the high-voltage distribution box to make the battery pack release DC power
  • the status of the high-voltage distribution box, the discharge power of the battery pack, and the remaining power are monitored in real time. If the high-voltage distribution box is in an abnormal state, the power supply of the powered vehicle is explained. The system has failed and cannot continue to discharge to the charged vehicle. At this time, the high voltage distribution box is controlled by the BMS to cut off the DC circuit of the battery pack. Similarly, when the discharge power of the battery pack is greater than the power threshold, it indicates that the DC current released by the battery pack has exceeded the control range of the BMS.
  • the power threshold can be set to the maximum discharge power allowed by the BMS, or can be set to less than The power value of the maximum discharge power allowed by the BMS.
  • the high voltage distribution box is controlled by the BMS to cut off the DC circuit of the battery pack.
  • the remaining power (English: State of Charge, abbreviation: SOC) is less than a preset power threshold (for example, it can be set to 30%)
  • a preset power threshold for example, it can be set to 30%
  • the present disclosure is applied to a power-supply vehicle.
  • the charge-discharge controller detects a connection signal from the discharge gun, When it is turned on, the charge and discharge controller and the battery management system BMS receive a discharge on signal to indicate the discharge.
  • the BMS controls the high-voltage distribution box to release the DC power from the battery pack.
  • the charge and discharge controller receives the connection signal and the discharge on signal, Obtain the first signal in the discharge gun.
  • the first signal is the first rated value
  • the first signal changes from the first rated value to the preset second rated value, change the battery.
  • the DC power released by the bag is converted into AC power to charge the charging vehicle, which can provide the power supply vehicle with the function of a charging cabinet, so that the power of the charging vehicle can be quickly replenished, reducing the charging cost and improving the charging efficiency.
  • Fig. 8 is a block diagram of an external charging device for a vehicle according to an exemplary embodiment. As shown in Fig. 8, the device 200 includes a charge-discharge controller 201 and a battery management system BMS 202.
  • the charge and discharge controller 201 is used to detect a connection signal of the discharge gun.
  • the charge-discharge controller 201 is configured to receive a discharge-on signal when a discharge switch is turned on.
  • BMS 202 is used to receive the discharge start signal when the discharge switch is turned on.
  • BMS 202 is used to control the high-voltage distribution box to release DC power from the battery pack after receiving the discharge start signal.
  • the charge and discharge controller 201 is configured to detect whether the first signal of the discharge gun is the first rated value after receiving the connection signal and the discharge on signal. When the first signal is the preset first rated value, it is sent to the charged vehicle. ⁇ ⁇ The second signal. When the first signal changes from the first rated value to a preset second rated value, the DC power released by the battery pack is converted into AC power to charge the charged vehicle.
  • the BMS 202 is used to control the high-voltage power distribution box to cut off the direct current circuit of the battery pack after receiving the discharge shutdown signal.
  • the charge and discharge controller 201 is used to stop external discharge.
  • the charge and discharge controller 201 is configured to:
  • the first signal is the second rated value
  • the temperature of the discharge port is greater than a preset first temperature threshold, the external discharge is stopped.
  • BMS 202 is used to:
  • the charge and discharge controller 201 is configured to:
  • the first signal is a voltage value of a control confirmation CP signal in the discharge gun.
  • the second signal is a signal pulse width modulated PWM signal.
  • the first rated value is greater than the second rated value.
  • the first rated value is used to indicate that the discharge gun is successfully connected to the charging gun of the charged vehicle
  • the second rated value is used to indicate that the charged vehicle is in a normal state and allowed to be charged.
  • BMS 202 is used to:
  • the high-voltage power distribution box and the battery pack are in a non-fault state, the high-voltage power distribution box is controlled to cause the battery pack to release DC power and pre-charge the charge and discharge controller 201.
  • BMS 202 is used to:
  • the high-voltage distribution box is controlled to cut off the DC circuit of the battery pack.
  • FIG. 9 is a connection relationship diagram of an external charging device of any vehicle described in the above embodiment.
  • the device includes two discharge guns (a left discharge gun and a right discharge gun) for charging with The charging port of the vehicle is connected.
  • Two charge and discharge controllers (the left charge and discharge controller and the right charge and discharge controller) are connected to the two discharge guns respectively, and are used to detect signals in the discharge gun (including: connection signals used to indicate whether the discharge gun is connected, CC signal, CP signal, etc.).
  • the BMS is connected to the high-voltage distribution box, which is used to control the charging and disconnecting of the charging contactor and DC contactor in the high-voltage distribution box to control the battery pack to release DC power or cut off the DC power circuit.
  • the instrument cluster is connected to two charge and discharge controllers through a drive module, where the drive module is controlled by a dual relay.
  • the discharge switch is connected via a meter, a charging gateway and two charge-discharge controllers.
  • the device also includes a vehicle controller, which is connected to a discharge gun, a charge and discharge controller, a BMS, a combination meter, and a charging gateway, respectively. It is used to control communication between various modules through CAN lines or hard lines, and can collect The received signals can be managed, and the status information of each module can also be detected. For example, after the discharge switch is turned on, the signal indicating the discharge switch is turned on is sent to the vehicle controller through the meter and the charging gateway, and then the vehicle controller sends the discharge on signal to the charge and discharge controller and the BMS, so that The charge-discharge controller and the BMS enter a discharge-ready mode.
  • a vehicle controller which is connected to a discharge gun, a charge and discharge controller, a BMS, a combination meter, and a charging gateway, respectively. It is used to control communication between various modules through CAN lines or hard lines, and can collect The received signals can be managed, and the status information of each module can also be detected. For example, after the discharge switch is turned on, the
  • connection relationship diagram shown in FIG. 9 is only an implementation manner of the foregoing embodiment, and the present disclosure is not limited to the specific structure described above.
  • the present disclosure is applied to a power-supply vehicle.
  • the charge-discharge controller detects a connection signal from the discharge gun, When it is turned on, the charge and discharge controller and the battery management system BMS receive a discharge on signal to indicate the discharge.
  • the BMS controls the high-voltage distribution box to release the DC power from the battery pack.
  • the charge and discharge controller receives the connection signal and the discharge on signal, Obtain the first signal in the discharge gun.
  • the first signal is the first rated value
  • the first signal changes from the first rated value to the preset second rated value, change the battery.
  • the DC power released by the bag is converted into AC power to charge the charging vehicle, which can provide the power supply vehicle with the function of a charging cabinet, so that the power of the charging vehicle can be quickly replenished, reducing the charging cost and improving the charging efficiency.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un procédé de charge externe pour un véhicule, consistant : en ce qu'un contrôleur de charge/décharge détecte un signal de connexion d'un pistolet de décharge ; après qu'un BMS a reçu un signal d'activation de décharge, en ce que le BMS commande à un boîtier de distribution à haute tension de permettre qu'un bloc-batterie libère du courant continu ; après qu'il a reçu le signal de connexion et le signal d'activation de décharge, en ce que le contrôleur de charge/décharge détecte si un premier signal du pistolet de décharge est une première valeur nominale, et lorsque le premier signal est la première valeur nominale prédéfinie, en ce que le contrôleur de charge/décharge envoie un deuxième signal à un véhicule en charge ; lorsque le premier signal est modifié de la première valeur nominale à une deuxième valeur nominale prédéfinie, en ce que le contrôleur de charge/décharge convertit le courant continu libéré par le bloc-batterie en courant alternatif pour charger le véhicule en charge.
PCT/CN2019/090686 2018-06-29 2019-06-11 Procédé et dispositif de charge externe pour véhicule WO2020001265A1 (fr)

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CN201810715352.3A CN110661309A (zh) 2018-06-29 2018-06-29 车辆的对外充电方法和装置

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CN113715638B (zh) * 2020-05-26 2024-03-01 北京新能源汽车股份有限公司 一种车对车充电的控制方法及电动汽车
CN114604185A (zh) * 2022-03-25 2022-06-10 浙江极氪智能科技有限公司 一种充放电一体化的显示控制系统和车辆

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JP2011061990A (ja) * 2009-09-10 2011-03-24 Ricoh Co Ltd 充放電制御装置及び充電制御方法
CN104253464A (zh) * 2013-06-28 2014-12-31 比亚迪股份有限公司 电动汽车之间相互充电的系统及充电连接器
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