Control system for charging interruption of electric automobile and automobile

Abstract

The utility model discloses a control system for charging interruption of an electric automobile. The control system comprises a vehicle-mounted charger and a charging electronic lock, the vehicle-mounted charger drives the electronic lock to be locked when detecting a charging state, the system further comprises a switch module, the switch module is connected in series in a CP loop or a PP loop in the vehicle-mounted charging socket, and the CP loop or the PP loop is controlled to be disconnected through the switch module; the vehicle-mounted charger controls the electronic lock to be unlocked after detecting that the CP loop or the PP loop is disconnected. The electronic lock has the advantages that the electronic lock can be quickly disconnected in the charging process, and the requirement of a user for quickly plugging and unplugging a charging gun is met; the charging gun electronic lock is disconnected by disconnecting the CP or PP loop, and the states of the CP or PP loop can be automatically reset, so that the next normal charging is not influenced, the charging process is not increased, and the scheme is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle charging control, in particular to a control system for interrupting charging of an electric vehicle and an electric vehicle. Background Art

[0002] With the increasing popularity of new energy vehicles, charging safety has drawn considerable attention. Various countries have introduced requirements for electronic locks to prevent the charging gun from falling off during charging, potentially causing safety accidents. For example, patent application number 201721440152.9 discloses an electronic lock device and system for a charging gun. The device comprises a housing, a drive assembly, a transmission assembly, a sector gear, and a locking pin mounted within the housing. The sector gear is rotatably disposed within the housing, and a connector is provided at an eccentric position on the sector gear. The connector is capable of sliding within a connection hole at the bottom of the locking pin. The locking pin is slidably connected to the housing, and the top end of the locking pin can engage with the lock hole to lock or disengage from the lock hole to unlock. The output end of the drive assembly is in transmission connection with the input end of the transmission assembly, and the output end of the transmission assembly is in transmission connection with the sector gear. This electronic lock structure for the charging gun can lock the electron gun and charging socket during charging, preventing the charging gun from falling off.

[0003] Taking the European standard as an example, when an electric vehicle using the CCS2 charging interface standard is using a plug-and-play AC power supply device, the electronic lock is locked during charging, and the charging gun cannot be unplugged. If the vehicle needs to be used during the journey, the European standard socket of the CCS2 charging interface standard can only release the electronic lock and allow the gun to be unplugged in the following two situations:

[0004] (1) Wait until charging is completed and the electronic lock automatically unlocks;

[0005] (2) The electronic lock is unlocked after disconnecting the mains power supply of the power supply equipment;

[0006] When the CCS2 standard socket is used to stop charging while the car is in use, the charging pile needs to be operated, which is slow and cannot meet the user's need for quick interruption of charging. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a control system for interrupting charging of electric vehicles and a vehicle. By improving the charging socket of the vehicle, the CP and PP circuits on the socket are controlled to achieve the purpose of quickly disconnecting the electronic lock of the charging gun.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a control system for interrupting charging of an electric vehicle, comprising an on-board charger and a charging electronic lock; the on-board charger drives the electronic lock to lock when detecting the charging state; the system also includes a switch module, the switch module is connected in series with the CP circuit or PP circuit in the on-board charging socket, and the disconnection of the CP circuit or PP circuit is controlled by the switch module; the on-board charger controls the unlocking of the electronic lock after detecting the disconnection of the CP circuit or PP circuit.

[0009] The switch module includes a normally closed contact, a manual switch, and a control unit; wherein the normally closed contact switch is connected in series in the CP circuit or PP circuit of the vehicle charging socket, and the output end of the control unit is used to control the disconnection of the normally closed contact switch; the manual switch is connected to the control unit; and the manual switch is used to sense the user's control signal.

[0010] The manual switch is arranged in the vehicle or on the vehicle-mounted charging socket housing.

[0011] The control unit is connected to a timer, and the timer is used to delay the time for the normally closed contact switch to be disconnected; the control unit controls the normally closed contact switch to return to the normally closed state after the delay ends.

[0012] The manual switch includes a touch switch, which is used to sense a user's touch signal and feed it back to the control unit.

[0013] The manual switch includes a fingerprint recognition module, which is used to recognize the user's fingerprint signal and send it to the control unit. The control unit controls the action state of the normally closed contact switch based on the fingerprint recognition result.

[0014] The output end of the control unit is connected to the alarm for sending an alarm signal; the input end of the control unit is connected to the charging gun insertion and extraction force sensor.

[0015] The alarm is a vehicle-mounted alarm.

[0016] The control unit is connected to the vehicle-mounted networking module through the CAN network, and the vehicle-mounted networking module is connected to the user's mobile phone APP to send an alarm signal to the user's mobile phone APP.

[0017] An electric vehicle comprises the control system for interrupting charging of the electric vehicle.

[0018] The advantages of this utility model are that: the electronic lock can be quickly disconnected during charging, meeting the user's needs for quick plugging and unplugging of the charging gun; the electronic lock of the charging gun is disconnected by disconnecting the CP or PP circuit, and the status of the CP and PP circuits can be automatically reset, which will not affect the next normal charging and will not increase the charging process. The solution is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0020] Figure 1 This is a schematic diagram of the charging connection principle between the charging grab and the vehicle socket of the utility model;

[0021] Figure 2 This is a schematic diagram of the control principle of the charging interruption control system of the utility model.

[0022] The markings in the above figure are: 1. PE line; 2. CP line; 3. PP (or CC) line; 4. Switch module; 5. Charging gun; 6. On-board charging socket; 7. On-board charger. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention will be further explained in detail below by describing the best embodiment with reference to the accompanying drawings.

[0024] This embodiment mainly relates to a solution that can quickly interrupt charging to unlock the electronic lock of the charging gun, which is mainly to facilitate the user's need to quickly disconnect the electronic lock. The electronic lock of the charging gun is actually a locking mechanism that satisfies the user to avoid the risk of the charging gun falling off when charging and improves charging safety. However, in many cases, it is necessary to quickly unlock the electronic lock to quickly plug and unplug the charging gun. For example, when other vehicles in the charging station are charging abnormally, such as smoke, fire, etc., it is necessary to quickly unlock the electronic lock to quickly plug and unplug the charging gun to leave the charging station and avoid damage to one's own property. However, the electronic lock of the charging gun in the existing technology cannot achieve the purpose of quickly interrupting charging and quickly unlocking the electronic lock. Based on this, this solution realizes a control system for interrupting charging of electric vehicles, and achieves the purpose of quickly unlocking the electronic lock of the charging gun by quickly charging. The specific solution is as follows:

[0025] like Figure 1 、 2As shown, a control system for interrupting charging of an electric vehicle includes an on-board charger and an electronic charging lock. The on-board charger locks the electronic lock when it detects the charging status. When the vehicle is charging, the charging gun is inserted into the on-board charging socket, connecting the CP and PP circuits between the charging socket and the charging gun. The on-board charger determines whether to lock or unlock the electronic charging lock by detecting whether the signals of the CP and PP circuits are in a chargeable state. Therefore, to quickly achieve this, the charger only needs to disconnect the PP circuit or the CP circuit. To this end, this solution adds a switch module. The switch module is connected in series with the CP circuit or the PP circuit in the on-board charging socket, and the switch module controls the disconnection of the CP circuit or the PP circuit. The on-board charger unlocks the electronic lock after detecting the disconnection of the CP circuit or the PP circuit. When the vehicle is charging, after the charging gun is inserted, the CP and PP circuits are closed. If charging is started at this time, the on-board charger detects that the CP and PP circuits are closed and enters the charging process. The on-board charger controls the charging gun electronic lock to lock. Conversely, after charging is completed, the charging gun outputs the corresponding charging end signal on the CP and PP circuits. At this time, the on-board charger detects this signal and disconnects the electronic lock of the charging base, thus completing a complete charging process. If the electronic lock needs to be quickly unlocked during the charging process and charging is terminated, the switch module controls the CP or PP circuit to disconnect to quickly interrupt the signal required for the on-board charger to lock. When the CP and PP circuits are disconnected, the on-board charger automatically disconnects the charging electronic lock, thereby achieving a quick disconnection.

[0026] Regarding the design of the switch module, this solution includes a normally closed contact switch, a manual switch, and a control unit. The normally closed contact switch is connected in series to the CP circuit or PP circuit of the vehicle charging socket, and the output of the control unit is used to control the disconnection of the normally closed contact switch. The manual switch is connected to the control unit, and the manual switch is used to sense the user's control signal. The normally closed contact switch can be implemented as a normally closed contact switch of a relay. The output of the control unit is connected to the relay to control the operation of the relay. The normally closed contact switch of the relay can be connected in series to the CP circuit or PP circuit of the charging socket. During the charging process, if the charging gun electronic lock is locked, in order to quickly unlock the electronic lock, the user can control the disconnection of the normally closed switch contacts by operating the manual switch, thereby disconnecting the CP circuit or PP circuit. Since the CP circuit or PP circuit is disconnected, the vehicle charger detects that the charging conditions are not met and automatically disconnects the charging gun electronic lock, thereby achieving the purpose of quickly interrupting charging and quickly unlocking the electronic lock.

[0027] In a preferred embodiment of the present application, the manual switch is located inside the vehicle or on the vehicle's charging socket housing. Installing the switch inside the vehicle prevents others from accidentally touching or disrupting the charging process. It is only used when the driver needs to quickly interrupt charging or disconnect the electronic lock. When the manual switch is located on the charging socket housing, the driver can simply press the manual switch on the charging socket housing to disconnect the electronic lock. However, since it is located on the charging socket housing, it can be operated by anyone other than the driver, compromising charging safety and reliability. To address this issue, the manual switch on the charging socket can be configured as a fingerprint switch, which inputs an operation signal to the control unit. The fingerprint switch comprises a two-in-one touch switch and fingerprint recognition module. The touch switch senses user touch signals and transmits them to the control unit. The fingerprint recognition module identifies the user's fingerprint signal and transmits it to the control unit. The control unit controls the operation state of the normally closed contact switch based on the fingerprint recognition result. Only when user manipulation of the touch switch is detected and fingerprint recognition verification is passed does the normally closed contact switch open based on the touch switch manipulation signal, thus achieving the purpose of quickly unlocking the electronic lock with fingerprint recognition verification.

[0028] In a preferred embodiment, the control unit is connected to a timer that delays the opening of the normally closed contact switch. After the delay period, the control unit controls the normally closed contact switch to return to its normally closed state. After disconnecting the CP and PP circuits, the normally closed contact switch returns to its normally closed state after the delay period, thus preventing the next charge from being affected.

[0029] In a preferred embodiment, the output end of the control unit is connected to an alarm for issuing an alarm signal; the input end of the control unit is connected to a charging gun plug-in / out force sensor. The charging gun plug-in / out force sensor is used to collect the plug-in / out force of the charging gun after the electronic lock is locked. When the force exceeds a threshold, the charging gun is violently plugged in and out, and an alarm signal is issued through the alarm. The plug-in / out force can be converted into the magnitude of the force required to pull out the charging gun by collecting the torque on the electronic lock. Because after locking, the electronic lock will generate tension or torque when it is pulled out. Detecting this force can detect the violent plugging and unplugging of the charging gun, thereby issuing an alarm.

[0030] In this embodiment, the alarm is divided into local and remote alarms. The local alarm is an onboard alarm, such as a horn. The remote alarm sends an alarm signal to the user's mobile phone app via the Internet of Vehicles (IoV), alerting the user of the charging status of a violent plug or unplug. The control unit is connected to the onboard IoV module via the CAN network, which in turn connects to the user's mobile phone app to issue the alarm signal. The IoV module is typically implemented as an onboard TBOX. The control unit can utilize the vehicle's domain controller or other controller to control charging interruption and unlocking of the electronic lock, and uses the TBOX to send an alarm signal to the user's mobile phone.

[0031] This embodiment also provides an electric vehicle, which includes the control system for interrupting charging of the electric vehicle in the above embodiment. Since the electric vehicle includes all the features of the control system in the above embodiment, it has all the technical advantages of the above control system.

[0032] Taking a charging socket that meets the CCS2 charging interface standard as an example, its working principle is introduced as follows: The entire AC charging process of a European standard electric vehicle using the CCS2 charging interface standard involves at least the following parts: power supply equipment (including control and guidance circuit), charging cable and CCS2 charging gun head, CCS2 charging socket, on-board charger, and power battery.

[0033] The CCS2 charging gun and charging socket have two pins related to charging control, CP and PP. During AC charging, the electric vehicle can only maintain normal charging when CP and PP are correctly connected and within a certain range of values.

[0034] When using plug-and-play power supply equipment, it is extremely inconvenient for users to stop charging midway with existing technology. This solution will add a normally closed inching delay reset switch to the existing European standard charging socket to control the on-off of the CP or PP conduction circuit. When the user wants to stop charging midway, pressing the switch added to the charging socket will disconnect the CP or PP conduction circuit. At this time, the on-board charger will detect that the external power supply device does not meet the charging conditions and will execute the end charging command and unlock the electronic lock. The user can then unplug the charging gun to meet the needs of the vehicle.

[0035] This solution uses a normally closed inching delay reset switch. After a single inching disconnection, it will automatically reset after a certain period of time. This will not affect the next normal charging and does not increase the charging process. The solution is stable and reliable. The specific disconnection time can be set according to actual conditions.

[0036] This invention effectively solves the problem of users using plug-and-play power supply equipment to charge electric vehicles using the CCS2 charging interface standard and needing to stop charging mid-route when they need to use the vehicle. The solution is low-cost, has a hard-wired connection, and physical buttons, making it easy to use and stable and reliable.

[0037] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A control system for interrupting charging of an electric vehicle, comprising an on-board charger and an electronic charging lock; the on-board charger drives the electronic lock to lock when the charging state is detected, characterized in that: The system also includes a switch module, which is connected in series to the CP circuit or PP circuit in the vehicle charging socket, and controls the disconnection of the CP circuit or PP circuit through the switch module; the vehicle charger controls the unlocking of the electronic lock after detecting that the CP circuit or PP circuit is disconnected.

2. The control system for interrupting charging of an electric vehicle according to claim 1, characterized in that: The switch module includes a normally closed contact switch, a manual switch, and a control unit; wherein the normally closed contact switch is connected in series in the CP circuit or PP circuit of the vehicle charging socket, and the output end of the control unit is used to control the disconnection of the normally closed contact switch; the manual switch is connected to the control unit; and the manual switch is used to sense the user's control signal.

3. The control system for interrupting charging of an electric vehicle according to claim 2, characterized in that: The manual switch is arranged in the vehicle or on the vehicle-mounted charging socket housing.

4. The control system for interrupting charging of an electric vehicle according to claim 2, characterized in that: The control unit is connected to a timer, and the timer is used to delay the time for the normally closed contact switch to be disconnected; the control unit controls the normally closed contact switch to return to the normally closed state after the delay ends.

5. A control system for interrupting charging of an electric vehicle according to any one of claims 2 to 4, characterized in that: The manual switch includes a touch switch, which is used to sense a user's touch signal and feed it back to the control unit.

6. A control system for interrupting charging of an electric vehicle according to any one of claims 2 to 4, characterized in that: The manual switch includes a fingerprint recognition module, which is used to recognize the user's fingerprint signal and send it to the control unit. The control unit controls the action state of the normally closed contact switch based on the fingerprint recognition result.

7. A control system for interrupting charging of an electric vehicle according to any one of claims 2 to 4, characterized in that: The output end of the control unit is connected to the alarm for sending an alarm signal; the input end of the control unit is connected to the charging gun insertion and extraction force sensor.

8. The control system for interrupting charging of an electric vehicle according to claim 7, characterized in that: The alarm is a vehicle-mounted alarm.

9. The control system for interrupting charging of an electric vehicle according to claim 7, characterized in that: The control unit is connected to the vehicle-mounted networking module through the CAN network, and the vehicle-mounted networking module is connected to the user's mobile phone APP to send an alarm signal to the user's mobile phone APP.

10. An electric vehicle, characterized in that: The electric vehicle includes the control system for interrupting charging of the electric vehicle as described in any one of claims 1-9.

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