WO2017076063A1

WO2017076063A1 - Charging control system and method for electric vehicle, and electric vehicle

Info

Publication number: WO2017076063A1
Application number: PCT/CN2016/090448
Authority: WO
Inventors: 张海明; 范文杰; 张文辉
Original assignee: 北汽福田汽车股份有限公司
Priority date: 2015-11-02
Filing date: 2016-07-19
Publication date: 2017-05-11
Also published as: CN106627185A; CN106627185B

Abstract

A charging control system for an electric vehicle comprises: a whole-vehicle controller (10), used for controlling, according to a charging instruction, a pantograph (40) to be raised to be in contact with a power supply line network and generate an electrical signal, and sending the electric signal to a battery manager (20); the battery manager (20), for generating a voltage self-checking signal according to the charging signal, and sending the voltage self-checking signal to a charger (60); and the charger (60), for detecting a voltage difference between a positive electrode and a negative electrode of the pantograph (40), and sending the voltage difference to the battery manager (20). The battery manager (20) is used for controlling a charging contactor (50) to be closed when the voltage different is equal to a voltage of the power supply line network, so that the power supply line network charges a battery (30) by means of the pantograph (40) and the charger (60). Also provided are an electric vehicle comprising the charging control system, and a charging control method. The charging control system, the electric vehicle and the charging method improve the charging safety and prevent the pantograph from being ablated.

Description

Electric vehicle charging control system, method and electric vehicle

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. "201510733409.9" filed on November 2, 2015, entitled "Charging Control System, Method, and Electric Vehicle for Electric Vehicles" by Beiqi Foton Motor Co., Ltd.

Technical field

The present invention relates to the field of electric vehicle technology, and in particular, to a charging control system, method and electric vehicle for an electric vehicle.

Background technique

In recent years, new energy city buses using the pantograph online charging technology route have developed rapidly, but the pantograph charging technology still uses the relatively backward technology in the early days, that is, the electric car with the pantograph is charged with the pantograph. At the same time, the driver raises the pantograph by means of a switch control lifting device or manual lifting, so that the pantograph is in contact with the wire mesh to charge the vehicle power battery.

In the related art, since the power supply line directly outputs high-voltage power, and there is no protection measure during the charging process of the pantograph, a certain safety hazard is brought to the charging, and the device is also damaged. For example, the driver issues a charging command. After raising the pantograph by means of a switch-controlled lifting device or manual lifting, the driver can only observe the connection between the poles of the pantograph and the power supply network by the naked eye, which may cause lifting. Abnormality causes the network to be damaged; if the wire contacts the other conductive parts of the pantograph, it will cause the car body to be charged, which may cause electric shock; if the wire mesh is in poor contact with the pantograph, it will cause the wire mesh and the pantograph to burn. Eclipse phenomenon.

Therefore, electric vehicle pantograph online charging technology needs to be improved.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present invention is to provide a charging control system for an electric vehicle that detects the connection between the pantograph and the power supply line network before charging the power battery, and allows charging when it is judged that the connection is good, avoiding The damage of the power supply network caused by the abnormal lift of the pantograph reduces the risk of electric shock caused by the power supply line contacting the other conductive parts of the pantograph and causing the vehicle body to be charged, and reduces the contact between the power supply network and the pantograph. The wire mesh and the pantograph ablation greatly enhance the experience.

A second object of the present invention is to provide an electric vehicle.

A third object of the present invention is to provide a charging control method for an electric vehicle.

In order to achieve the above object, a charging control system for an electric vehicle according to a first aspect of the present invention includes: a vehicle controller, a battery manager, a power battery, a pantograph, a charging contactor, and a charger, wherein the whole a vehicle controller for controlling the pantograph to rise according to a charging command to cause the pantograph to contact the power supply network, generate a charging signal, and transmit the charging signal to the battery manager; a battery manager, configured to receive the charging signal, generate a voltage self-test signal according to the charging signal, and send the voltage self-test signal to the charger; the charger is configured to receive the voltage Self-checking a signal, and detecting a voltage difference between the positive pole and the negative pole of the pantograph according to the voltage self-test signal, and transmitting the voltage difference value to the battery manager; the battery manager, And a method for controlling the charging contactor to close when the voltage difference is equal to a voltage of the power supply network, so that the power supply network passes the pantograph and the charger to the power battery Electricity.

According to the charging control system of the electric vehicle according to the embodiment of the present invention, when the battery manager receives the charging signal, the voltage self-test signal is sent to the charger, and the charger detects the voltage difference between the positive pole and the negative pole of the pantograph. When the battery manager determines that the voltage difference is equal to the voltage of the power supply network, the charging circuit is controlled to be charged to charge the power battery, and the system detects the connection between the pantograph and the power supply network before charging the power battery. When the connection is judged to be good, the charging is allowed, the power supply network damage caused by the abnormal lift of the pantograph is avoided, and the electric shock risk caused by the power supply line contacting the other conductive parts of the pantograph and causing the vehicle body to be charged is reduced, and the power supply is reduced. The wire mesh and the pantograph ablation caused by poor contact between the wire mesh and the pantograph greatly enhance the experience.

In an embodiment of the present invention, the battery manager is further configured to generate a charging normal signal when the voltage difference is equal to a voltage of the power supply network, and send the charging normal signal to the whole The vehicle controller is further configured to receive the charging normal signal, and generate first prompt information according to the charging normal signal to remind the user.

In an embodiment of the present invention, the battery manager is further configured to control the charging contactor to remain in an off state when the voltage difference is equal to 0, and send a charging failure signal to the vehicle control The vehicle controller is further configured to control the pantograph landing according to the charging failure signal, and generate second prompt information according to the charging failure signal to remind the user.

In an embodiment of the present invention, an emergency stop switch is further included, wherein when the emergency stop switch is triggered, the vehicle controller sends a disconnection charging signal to the battery manager to cause the The battery manager controls the charging contactor to open, and the vehicle controller also controls the pantograph to land.

In an embodiment of the invention, the lift solenoid valve is further included, wherein the vehicle controller controls the lift solenoid valve to raise the pantograph according to the charge command.

In order to achieve the above object, an electric vehicle according to an embodiment of the second aspect of the present invention includes the first aspect of the present invention. Charge control system.

According to the electric vehicle of the embodiment of the present invention, since the charging control system is provided, the connection between the pantograph and the power supply line network is detected before the power battery is charged, and charging is allowed when the connection is judged to be good, and the pantograph is avoided. The damage of the power supply network caused by the abnormal lifting and lowering reduces the risk of electric shock caused by the power supply line contacting the other conductive parts of the pantograph and causing the vehicle body to be charged, and reduces the network and the network caused by poor contact between the power supply network and the pantograph. The electric bow ablation phenomenon greatly enhances the experience.

In order to achieve the above object, a charging control method for an electric vehicle according to a third aspect of the present invention includes: a vehicle controller, a battery manager, a power battery, a pantograph, a charging contactor, and a charger, The charging control method includes the following steps: the vehicle controller controls the pantograph to rise according to a charging command to cause the pantograph to contact the power supply network, generate a charging signal, and send the charging signal to the a battery manager; the battery manager receives the charging signal, generates a voltage self-test signal according to the charging signal, and transmits the voltage self-test signal to the charger; the charger receiving station a voltage self-test signal, and detecting a voltage difference between the positive pole and the negative pole of the pantograph according to the voltage self-test signal, and transmitting the voltage difference value to the battery manager; the battery management Controlling the charging contactor to close when the voltage difference is equal to the voltage of the power supply network, so that the power supply network passes through the pantograph and the charger The battery charging power.

According to the charging control method of the electric vehicle according to the embodiment of the present invention, when the battery manager receives the charging signal, the voltage self-test signal is sent to the charger, and the charger detects the voltage difference between the positive pole and the negative pole of the pantograph. When the battery manager determines that the voltage difference is equal to the voltage of the power supply network, the control charging circuit is turned on to charge the power battery, and the method detects the connection between the pantograph and the power supply network before charging the power battery. When the connection is judged to be good, the charging is allowed, the power supply network damage caused by the abnormal lift of the pantograph is avoided, and the electric shock risk caused by the power supply line contacting the other conductive parts of the pantograph and causing the vehicle body to be charged is reduced, and the power supply is reduced. The wire mesh and the pantograph ablation caused by poor contact between the wire mesh and the pantograph greatly enhance the experience.

In an embodiment of the present invention, the method further includes the following steps: the battery manager determines that a charging normal signal is generated when the voltage difference is equal to a voltage of the power supply network, and sends the charging normal signal to the The vehicle controller is configured to receive the charging normal signal, and generate first prompt information according to the charging normal signal to remind the user.

In an embodiment of the present invention, the method further includes the following steps: the battery manager controls the charging contactor to maintain an off state when determining that the voltage difference is equal to 0, and sends a charging failure signal to the whole a vehicle controller; the vehicle controller controls the pantograph to fall according to the charging failure signal, and generates second prompt information according to the charging failure signal to remind the user.

In an embodiment of the present invention, the electric vehicle further includes an emergency stop switch, the charging control method further comprising the step of: the vehicle controller generating a disconnection charging signal when the emergency stop switch is triggered, And disconnect the charge An electrical signal is sent to the battery manager, and the pantograph is controlled to fall; the battery manager controls the charging contactor to open based on the disconnected charging signal.

In an embodiment of the present invention, the electric vehicle further includes a lifting solenoid valve, and the vehicle controller controls the pantograph to rise according to the charging instruction, specifically: the vehicle controller is charged according to the charging The lift solenoid valve is commanded to raise the pantograph.

DRAWINGS

1 is a block schematic diagram of a charging control system for an electric vehicle according to an embodiment of the present invention;

2 is a schematic diagram showing a connection relationship of a charging control system of an electric vehicle according to an embodiment of the present invention;

3 is a flow chart of a charging control method for an electric vehicle according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

A charging control system, method, and electric vehicle for an electric vehicle according to an embodiment of the present invention will be described below with reference to the drawings.

1 is a block schematic diagram of a charging control system for an electric vehicle in accordance with one embodiment of the present invention. As shown in FIG. 1, a charging control system for an electric vehicle according to an embodiment of the present invention includes: a vehicle controller 10, a battery manager 20, a power battery 30, a pantograph 40, a charging contactor 50, and a charger 60.

The vehicle controller 10 is configured to control the pantograph 40 to rise in accordance with the charging command to cause the pantograph 40 to contact the power supply line network, generate a charging signal, and transmit the charging signal to the battery manager 20.

The battery manager 20 is configured to receive a charging signal, generate a voltage self-test signal based on the charging signal, and transmit the voltage self-test signal to the charger 60.

The charger 60 is configured to receive a voltage self-test signal, and detect a voltage difference between the positive pole and the negative pole of the pantograph 40 according to the voltage self-test signal, and send the voltage difference value to the battery manager 20.

The battery manager 20 is also operative to control the charging contactor 50 to close when the voltage difference is equal to the voltage of the power supply network to cause the power supply network to charge the power battery 30 through the pantograph 40 and the charger 60.

In one embodiment of the present invention, as shown in FIG. 1, the charge control system further includes a lift solenoid valve 70, wherein the vehicle controller 10 controls the lift solenoid valve 70 to raise the pantograph 40 in accordance with the charge command.

The charging control system of the electric vehicle of the embodiment of the present invention will be described below by the charging process of the electric vehicle.

Specifically, as shown in FIG. 2, when the electric vehicle is ready to be charged, the user (driver) first closes the pantograph lift switch K, and when the pantograph lift switch K is closed, the vehicle controller 10 receives the closing signal ( Charge instruction) The lift solenoid valve 70 operates to control the pantograph 40 to rise upward and send a charging signal to the battery manager 20 through the CAN communication network; after the battery manager 20 receives the charging signal, the battery manager 20 communicates through the CAN communication network. The charger 60 sends a voltage self-test signal; after receiving the voltage self-test signal, the charger 60 detects the voltage difference between the positive and negative poles of the pantograph 40, and sends the voltage difference to the battery manager 20; battery management After receiving the voltage difference, the device 20 determines whether the voltage difference is equal to the voltage of the power supply network. If it is equal to the voltage of the power supply network, the connection between the pantograph 40 and the power supply network is good, then the system will allow The car charging circuit is charging, otherwise charging is not allowed. When the battery manager 20 determines that the voltage difference between the positive pole and the negative pole of the pantograph 40 is equal to the voltage of the power supply line network, the control charging contactor 50 is closed to pass the power supply wire network through the pantograph 40 and the charger 60. The power battery 30 is charged.

In an embodiment of the present invention, the battery manager 20 is further configured to generate a charging normal signal when the voltage difference is equal to the voltage of the power supply network, and send the charging normal signal to the vehicle controller 10; the vehicle controller 10 It is further configured to receive a charging normal signal, and generate a first prompt message according to the charging normal signal to remind the user.

Specifically, when the voltage difference between the positive pole and the negative pole of the pantograph 40 is equal to the voltage of the power supply network, the battery manager 20 also sends a charging normal signal to the vehicle controller 10, and the vehicle controller 10 receives the same. When the normal signal is charged, a signal (ie, the first prompt message) is sent to remind the user that the charging is normal.

In an embodiment of the present invention, the battery manager 20 is further configured to control the charging contactor 50 to remain in an off state when the voltage difference is equal to 0, and send a charging failure signal to the vehicle controller 10; the vehicle controller The 10 is further configured to control the pantograph 40 to fall according to the charging failure signal, and generate a second prompt message according to the charging failure signal to remind the user.

Specifically, if the voltage difference received by the battery manager 20 is zero, it indicates that there is a problem in the connection between the pantograph 40 and the power supply line network, and the battery manager 20 determines that the charging is stopped, and the charging contactor 50 is not closed, and Sending a charging failure signal to the vehicle controller 10, if the vehicle controller 10 receives the charging failure signal, the elevator controller 70 is controlled to lower the pantograph 40, and a signal (ie, a second prompt message) is sent to remind the user that the charging has failed. Need to perform the necessary checks. Recharge or repair after the user has trouble checked.

In one embodiment of the present invention, an emergency stop switch 80 is further included, wherein when the emergency stop switch 80 is triggered, the vehicle controller 10 transmits a disconnection charging signal to the battery manager 20 to cause the battery manager 20 The charging contactor 50 is controlled to be turned off, and the vehicle controller 10 also controls the pantograph 40 to fall.

Specifically, if the user finds an abnormality or encounters any emergency during the charging process, the emergency stop switch 80 can be closed in time, at which time the vehicle controller 10 sends a disconnection charging signal to the battery manager 20, and the battery manager 20 controls the charging contact. The device 50 is turned off, and the vehicle controller 10 controls the lift solenoid valve 70 to lower the pantograph 40 to stop charging.

In the charging control system of the electric vehicle according to the embodiment of the present invention, when the battery manager receives the charging signal, the voltage self-test signal is sent to the charger, and the charger detects the voltage difference between the positive pole and the negative pole of the pantograph. When the battery manager determines that the voltage difference is equal to the voltage of the power supply network, the control charging circuit is turned on to charge the power battery. The system detects the connection between the pantograph and the power supply network before charging the power battery. When it is judged that the connection is good, the system allows charging, which avoids the damage of the power supply network caused by the abnormal lift of the pantograph, and reduces the contact of the power supply network. The other conductive parts of the electric bow cause the risk of electric shock caused by the charging of the vehicle body, which reduces the phenomenon of wire mesh and pantograph ablation caused by poor contact between the power supply network and the pantograph, thereby greatly improving the experience.

In order to implement the above embodiment, the present invention also proposes an electric vehicle. The electric vehicle includes the charging control system proposed by the present invention.

In the electric vehicle according to the embodiment of the present invention, since the charging control system is provided, the connection between the pantograph and the power supply line network is detected before charging the power battery, and charging is allowed when the connection is judged to be good, thereby avoiding the pantograph lifting. The abnormality of the power supply network is caused by the abnormality, which reduces the risk of electric shock caused by the power supply line contacting the other conductive parts of the pantograph and causing the vehicle body to be charged, and reduces the network and power receiving caused by poor contact between the power supply network and the pantograph. Bow ablation, which greatly enhances the experience.

In order to implement the above embodiment, the present invention also proposes a charging control method for an electric vehicle.

3 is a flow chart of a charging control method for an electric vehicle according to an embodiment of the present invention. The electric vehicle includes a vehicle controller, a battery manager, a power battery, a pantograph, a charging contactor, and a charger. As shown in FIG. 3, the charging control method for the electric vehicle according to the embodiment of the present invention includes the following steps:

S1. The vehicle controller controls the pantograph to rise according to the charging command to make the pantograph contact the power supply network, generate a charging signal, and send the charging signal to the battery manager.

In an embodiment of the present invention, the electric vehicle further includes a lift solenoid valve, and the vehicle controller controls the pantograph to rise according to the charging command, specifically: the vehicle controller controls the lift solenoid valve according to the charging command to make the pantograph rising.

Specifically, when the electric vehicle is ready to be charged, the user (driver) first closes the pantograph lift switch, and when the pantograph lift switch is closed, the vehicle controller receives the closing signal (ie, the charging command), and controls the lift solenoid valve. Work to control the pantograph to rise and send a charging signal to the battery manager via the CAN communication network.

S2. The battery manager receives the charging signal, generates a voltage self-test signal according to the charging signal, and sends the voltage self-test signal to the charger.

Specifically, after receiving the charging signal, the battery manager sends a voltage self-test signal to the charger through the CAN communication network.

S3. The charger receives the voltage self-test signal, and detects a voltage difference between the positive pole and the negative pole of the pantograph according to the voltage self-test signal, and sends the voltage difference value to the battery manager.

Specifically, after receiving the voltage self-test signal, the charger detects a voltage difference between the positive and negative poles of the pantograph, and sends the voltage difference to the battery manager.

S4. The battery manager controls the charging contactor to close when determining that the voltage difference is equal to the voltage of the power supply network, so that the power supply network charges the power battery through the pantograph and the charger.

Specifically, after receiving the voltage difference, the battery manager determines whether the voltage difference is equal to the voltage of the power supply network. If the voltage of the power supply network is equal to the voltage of the power supply network, the connection between the pantograph and the power supply network is good, then the system The on-board charging circuit will be allowed to charge, otherwise charging will not be allowed.

More specifically, when the battery manager determines that the voltage difference between the positive and negative poles of the pantograph is equal to the voltage of the power supply network, the control charging contactor is closed to enable the power supply network to pass through the pantograph and the charger. Charging batteries.

In an embodiment of the present invention, the method further includes the following steps: the battery manager determines to generate a charging normal signal when the voltage difference is equal to the voltage of the power supply network, and sends the charging normal signal to the vehicle controller; the vehicle controller The charging normal signal is received, and the first prompt information is generated according to the charging normal signal to remind the user.

Specifically, when the voltage difference between the positive pole and the negative pole of the pantograph is equal to the voltage of the power supply network, the battery manager also sends a charging normal signal to the vehicle controller, and if the vehicle controller receives the charging normal signal, Then the signal (ie, the first prompt message) is sent to remind the user that the charging is normal.

In an embodiment of the present invention, the method further includes the following steps: the battery manager controls the charging contactor to remain in an off state when determining that the voltage difference is equal to 0, and sends a charging failure signal to the vehicle controller; the vehicle controller The pantograph is controlled according to the charging failure signal, and the second prompt information is generated according to the charging failure signal to remind the user.

Specifically, if the voltage difference received by the battery manager is zero, the connection between the pantograph and the power supply network is problematic, the battery manager determines that the charging is stopped, and the charging contactor is not closed, and is controlled to the entire vehicle. The device sends a charging failure signal, and if the vehicle controller receives the charging failure signal, it controls the lifting solenoid valve to lower the pantograph and sends a signal (ie, the second prompt message) to remind the user that the charging fails and necessary inspection is required. Recharge or repair after the user has trouble checked.

In an embodiment of the present invention, the electric vehicle further includes an emergency stop switch, and the charging control method further includes the following steps: the vehicle controller generates a disconnection charging signal when the emergency stop switch is triggered, and sends the disconnection charging signal to The battery manager, as well as controlling the pantograph to land; the battery manager controls the charging contactor to open according to the disconnection charging signal.

Specifically, if the user finds an abnormality or encounters any emergency situation during the charging process, the emergency stop switch can be closed in time, and at this time, the vehicle controller sends a disconnection charging signal to the battery manager, and the battery manager controls the charging contactor to be disconnected. And the vehicle controller controls the lift solenoid valve to lower the pantograph to stop charging.

In the charging control method for the electric vehicle according to the embodiment of the present invention, when the battery manager receives the charging signal, the voltage self-test signal is sent to the charger, and the charger detects the voltage difference between the positive pole and the negative pole of the pantograph. When the battery manager determines that the voltage difference is equal to the voltage of the power supply network, the control charging circuit is turned on to charge the power battery, and the method detects the connection between the pantograph and the power supply network before charging the power battery. When it is judged that the connection is good, the charging is allowed, the power supply network damage caused by the abnormal lift of the pantograph is avoided, and the electric shock risk caused by the power supply line contacting the other conductive parts of the pantograph and causing the vehicle body to be charged is reduced, and the power supply line is reduced. The net and the pantograph ablation caused by poor contact between the net and the pantograph greatly enhance the experience.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements, unless otherwise specified Limited. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A charging control system for an electric vehicle, comprising: a vehicle controller, a battery manager, a power battery, a pantograph, a charging contactor, and a charger, wherein

The vehicle controller is configured to control the pantograph to rise according to a charging command to contact the pantograph to contact a power supply network, generate a charging signal, and send the charging signal to the battery manager ;

The battery manager is configured to receive the charging signal, generate a voltage self-test signal according to the charging signal, and send the voltage self-test signal to the charger;

The charger is configured to receive the voltage self-test signal, and detect a voltage difference between a positive pole and a negative pole of the pantograph according to the voltage self-test signal, and send the voltage difference value to the Battery manager

The battery manager is further configured to control the charging contactor to close when the voltage difference is equal to a voltage of the power supply network, so that the power supply network passes the pantograph and the charger Charging the power battery.
A charging control system for an electric vehicle according to claim 1, wherein

The battery manager is further configured to generate a charging normal signal when the voltage difference is equal to a voltage of the power supply network, and send the charging normal signal to the vehicle controller;

The vehicle controller is further configured to receive the charging normal signal, and generate first prompt information according to the charging normal signal to remind the user.
A charging control system for an electric vehicle according to claim 1, wherein

The battery manager is further configured to control the charging contactor to maintain an off state when the voltage difference is equal to 0, and send a charging failure signal to the vehicle controller;

The vehicle controller is further configured to control the pantograph landing according to the charging failure signal, and generate second prompt information according to the charging failure signal to remind the user.
The charging control system for an electric vehicle according to claim 1, further comprising an emergency stop switch, wherein

When the emergency stop switch is triggered, the vehicle controller sends a disconnection charging signal to the battery manager to cause the battery manager to control the charging contactor to be disconnected, the vehicle control The device also controls the pantograph to land.
A charging control system for an electric vehicle according to claim 1, further comprising: a lift solenoid valve, wherein said vehicle controller controls said lift solenoid valve to cause said pantograph according to said charge command rising.
An electric vehicle characterized by comprising the charging control system according to any one of claims 1-5.
A charging control method for an electric vehicle, characterized in that the electric vehicle includes a vehicle controller, a battery manager, a power battery, a pantograph, a charging contactor and a charger, and the charging control method comprises the following steps:

The vehicle controller controls the pantograph to rise according to a charging command to bring the pantograph into contact with the power supply network, and Generating a charging signal and transmitting the charging signal to the battery manager;

The battery manager receives the charging signal, generates a voltage self-test signal according to the charging signal, and transmits the voltage self-test signal to the charger;

The charger receives the voltage self-test signal, and detects a voltage difference between the positive pole and the cathode of the pantograph according to the voltage self-test signal, and sends the voltage difference value to the battery management Device

The battery manager controls the charging contactor to close when determining that the voltage difference is equal to the voltage of the power supply network, so that the power supply network passes the pantograph and the charger pair Power battery charging.
The charging control method for an electric vehicle according to claim 7, further comprising the steps of:

The battery manager determines that a charging normal signal is generated when the voltage difference is equal to a voltage of the power supply network, and sends the charging normal signal to the vehicle controller;

The vehicle controller receives the charging normal signal, and generates first prompt information according to the charging normal signal to remind the user.
The charging control method for an electric vehicle according to claim 7, further comprising the steps of:

The battery manager controls the charging contactor to maintain an off state when determining that the voltage difference is equal to 0, and sends a charging failure signal to the vehicle controller;

The vehicle controller controls the pantograph to fall according to the charging failure signal, and generates second prompt information according to the charging failure signal to remind the user.
The charging control method for an electric vehicle according to claim 7, wherein the electric vehicle further comprises an emergency stop switch, and the charging control method further comprises the following steps:

The vehicle controller generates a disconnection charging signal when the emergency stop switch is triggered, transmits the disconnection charging signal to the battery manager, and controls the pantograph to land;

The battery manager controls the charging contactor to open according to the disconnection charging signal.
The charging control method for an electric vehicle according to claim 7, wherein the electric vehicle further includes a lifting electromagnetic valve, and the vehicle controller controls the pantograph to rise according to the charging instruction, and specifically includes:

The vehicle controller controls the lift solenoid valve to raise the pantograph according to the charging command.