Charging management system of vehicle and vehicle

Abstract

The invention provides a charging management system of a vehicle and the vehicle. The charging management system includes: an input module including at least a first input unit and a second input unit configured to provide a first input signal from a first charging port of a vehicle and a second input signal from a second charging port of the vehicle, respectively; the control module comprises at least a first control unit and a second control unit, the first control unit is configured to generate a first control instruction based on the first input signal and the second input signal, and the second control unit is configured to generate a second control instruction based on the first input signal and the second input signal; and the execution module comprises at least a first execution unit and a second execution unit, the first execution unit is configured to respond to the first control instruction to control on and off of the first relay of the first charging port, and / or the second execution unit is configured to respond to the second control instruction to control on and off of the second relay of the second charging port.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and more particularly to the field of battery systems for vehicles. More specifically, the present invention relates to a charging management system for a vehicle and a vehicle applying the charging management system. Background Art

[0002] With the continuous development of new energy technologies, various related applications are increasingly appearing in life, especially new energy vehicles. Currently, in order to facilitate the charging process of new energy vehicles, vehicles usually have multiple charging ports to allow the vehicle to connect to charging devices at different locations for charging. However, during the process of high-voltage charging using multiple charging devices, if the parameters such as voltage, current, and charging power provided by the charging device do not match the vehicle, it may lead to unstable power, which may damage the vehicle's electrical system and electronic devices. Therefore, it is necessary to improve the vehicle's charging system. Summary of the Invention

[0003] The object of the present invention is to solve the problems existing in the above-mentioned prior art, and to provide a charging management system for a vehicle to improve the charging process of the vehicle in a cost-effective and reliable manner.

[0004] To this end, according to one aspect of the present invention, there is provided a charging management system for a vehicle, the charging management system comprising: an input module, the input module comprising at least a first input unit and a second input unit, the first input unit and the second input unit being configured to respectively provide a first input signal from a first charging port of the vehicle and a second input signal from a second charging port of the vehicle; a control module, the control module comprising at least a first control unit and a second control unit, the first control unit being configured to generate a first control instruction based on the first input signal and the second input signal, and the second control unit being configured to generate a second control instruction based on the first input signal and the second input signal; and an execution module, the execution module comprising at least a first execution unit and a second execution unit, the first execution unit being configured to control the closing and opening of a first relay of the first charging port in response to the first control instruction, and / or the second execution unit being configured to control the closing and opening of a second relay of the second charging port in response to the second control instruction.

[0005] According to the above technical concept, the present invention may further include any one or more of the following optional forms.

[0006] In some alternative forms, the first control unit and the second control unit respectively include a first comparator and a second comparator. The first comparator is configured to generate a first digital signal based on the first input signal, and the second comparator is configured to generate a second digital signal based on the second input signal.

[0007] In some alternative forms, the first comparator is configured to compare the first input signal with a ground signal to generate the first digital signal, and the second comparator is configured to compare the second input signal with a ground signal to generate the second digital signal.

[0008] In some alternative forms, the control module further includes a logic gate controller. The logic gate controller includes a first logic gate controller and a second logic gate controller. The first logic gate controller is configured to output the first control instruction based on the first digital signal and the second digital signal, and the second logic gate controller is configured to output the second control instruction based on the first digital signal and the second digital signal.

[0009] In some alternative forms, the first logic gate controller and the second logic gate controller are configured to output a first relay disconnection instruction and a second relay disconnection instruction respectively when the first digital signal and the second digital signal are the same.

[0010] In some alternative forms, the first logic gate controller is configured to output the first control instruction based on the first digital signal when the first digital signal and the second digital signal are different, and the second logic gate controller is configured to output the second control instruction based on the second digital signal when the first digital signal and the second digital signal are different.

[0011] In some alternative forms, the first control unit includes a first amplifying device, and the second control unit includes a second amplifying device. The first amplifying device is configured to amplify the voltage of the first digital signal for output to the first relay, and the second amplifying device is configured to amplify the voltage of the second digital signal for output to the second relay.

[0012] In some alternative forms, the first input signal and the second input signal are control guiding signals for monitoring the interaction between the vehicle and the first charging port and the second charging port.

[0013] In some alternative forms, the control guiding signal is configured to indicate the charging state of the vehicle.

[0014] According to another aspect of the present invention, a vehicle is provided, which includes the above-mentioned charging management system of the vehicle. The charging management system is arranged between the charging port of the vehicle and the on-board charger, or the charging management system is integrated with an external signal generator of the charging device used by the vehicle.

[0015] By setting up the charging management system, before the high-voltage current of the charging device from the charging station works, a low-voltage communication can be established between the charging device and the vehicle to ensure that the charging process is ready, reducing the risk of electrical safety accidents such as accidental electric shock. In addition, in the present invention, relays are provided at multiple charging ports of the vehicle, which can independently control the closing and opening of multiple charging ports, improving the safety and reliability of the charging process of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features and advantages of the present invention will be better understood through the following alternative embodiments described in detail in conjunction with the drawings, where:

[0017] Figure 1 The schematic diagram of the charging management system of the vehicle according to an embodiment of the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The implementation and use of the embodiments will be discussed in detail below. However, it should be understood that the specific embodiments discussed are only illustrative of the specific ways of implementing and using the present invention, rather than limiting the scope of the present invention.

[0019] In this article, "front" and "rear" are relative to the front and rear directions of the vehicle. In addition, "longitudinal" refers to the direction with relatively larger dimensions, which can also be called the length direction.

[0020] The multi-path AC charging technology allows the vehicle to be charged using multiple charging devices (for example, charging guns). The inventor found that currently, during the process of charging the vehicle using multiple charging guns, in one solution, the high-voltage cable is directly inserted into the charging port without safety protection measures, which may cause the high-voltage alternating current to be transmitted simultaneously on multiple branches, resulting in vehicle damage or other safety problems. Another solution is to determine the power distribution of each charging port by detecting the high-voltage alternating current to carry out the charging process. However, there are risks such as electric shock or inaccurate detection results during the process of detecting the high-voltage alternating current.

[0021] Referring to Figure 1 , Figure 1 The schematic diagram of the charging management system of the vehicle according to an embodiment of the present invention is shown.

[0022] The charging management system 100 of the present invention generally includes an input module 110, a control module 120, and an execution module 130. The input module 110 is used to provide an input signal from the charging port of the vehicle. The control module 120 generates a control instruction based on the input signal. The execution module 130 controls the closing and opening of the relay of the charging port in response to the control instruction. Specifically, when there is a charging port at each of the front end and the rear end in the longitudinal direction of the vehicle, the input module 110 includes a first input unit 111 and a second input unit 112. The first input unit 111 is used to provide a first input signal from the first charging port, and the second input unit 112 is used to provide a second input signal from the second charging port. The control module 120 includes a first control unit 121 and a second control unit 122. The first control unit 121 generates a first control instruction based on the first input signal and the second input signal, and the second control unit 122 generates a second control instruction based on the first input signal and the second input signal. The execution module 130 includes a first execution unit 131 and a second execution unit 132. The first execution unit 131 controls the closing and opening of the first relay 133 of the first charging port in response to the first control instruction, and the second execution unit 132 controls the closing and opening of the second relay 134 of the second charging port in response to the second control instruction.

[0023] In this way, before the high-voltage current from the charging device works, a low-voltage communication can be established between the charging device and the vehicle through the charging management system provided by the embodiments of the present invention to ensure that the charging process is ready, reducing or avoiding the risk of electrical safety accidents such as accidental electric shock. In addition, the charging management system sets a relay at each charging port of the vehicle, which can independently control the closing and opening of each charging port, preventing multiple charging devices from transmitting high-voltage alternating current simultaneously when charging devices are inserted into each charging port, improving the safety and reliability of the vehicle.

[0024] It can be understood that, in an embodiment of the present invention, there is a charging port at each of the front end and the rear end in the longitudinal direction of the vehicle, that is to say, the vehicle is provided with a total of two charging ports. However, the number of charging ports of the vehicle is not limited to this and can be changed as needed. For example, the vehicle can include three or more charging ports.

[0025] In some embodiments, the first input signal and the second input signal may be Control Pilot signals, abbreviated as CP signals. The CP signal is used to monitor the interaction between the vehicle and the charging device. The CP signal can, for example, indicate the charging status, such as whether the charging has started or completed.

[0026] Such as Figure 1As shown, the first control unit 121 may include a first comparator 123, and the second control unit 122 may include a second comparator 124. The first comparator 123 may convert a first input signal from the first input unit 111 into a first digital signal, and the second comparator 124 may convert a second input signal from the second input unit 112 into a second digital signal. In this way, a common digital communication protocol can be used for communication between different charging devices and vehicles, enabling different charging devices and vehicles to communicate according to the same standard, more easily achieving compatibility between different charging devices and vehicles, and making the charging management system 100 applicable to various charging devices and charging ports with different standards.

[0027] In some embodiments, the first comparator 123 may compare the first input signal with a ground signal to generate a first digital signal, and the second comparator 124 may compare the second input signal with the ground signal to generate a second digital signal. Specifically, when the first input signal and the second input signal are higher than the ground signal, the first comparator 123 and the second comparator 124 will generate the digital signal "1", and when the first input signal and the second input signal are lower than the ground signal, the first comparator 123 and the second comparator 124 will generate the digital signal "0" to detect whether a charging device is inserted into the charging port. Using the ground signal as the reference level for comparison can simplify the circuit design, reduce the need for an additional reference signal, and improve the reliability of the system. It can be understood that the reference signal for comparison is not limited to this and can be changed as needed. In this way, after the first input signal and the second input signal are processed by the first comparator 123 and the second comparator 124 respectively, stable digital signals "0" or "1" can be output, improving the stability of the charging management system 100.

[0028] Continuing to refer to Figure 1 , the first control unit 121 may include a first logic gate controller 125, and the second control unit 122 may include a second logic gate controller 126. The first logic gate controller 125 may output a first control instruction based on the first digital signal and the second digital signal, and the second logic gate controller 126 may output a second control instruction based on the first digital signal and the second digital signal. In this way, logical control can be performed on the digital signals output by the comparators. Each logic gate controller outputs a control instruction based on the first digital signal and the second digital signal, and can output corresponding control instructions by considering the states of both charging ports at the same time. In addition, the logic gate controller can customize the control logic as needed, improving the flexibility of the charging management system 100.

[0029] Specifically, when the first digital signal is the same as the second digital signal, that is, when both the first digital signal and the second digital signal are "0" or "1", the first logic gate controller 125 and the second logic gate controller 126 can respectively output a first relay disconnection instruction and a second relay disconnection instruction. In this way, when charging devices are inserted into both charging ports, the relays of the charging ports will be in the disconnected state and charging cannot be performed, and the charging management system 100 enters a protection state to ensure the safety of the charging process.

[0030] In addition, when the first digital signal is different from the second digital signal, the first logic gate controller 125 can output a first control instruction based on the first digital signal, and the second logic gate controller 126 can output a second control instruction based on the second digital signal, so that when a charging device is inserted into one of the two charging ports, the relay of the charging port into which the charging device is inserted is closed, and the relay of the charging port into which no charging device is inserted is disconnected, enabling the vehicle to charge.

[0031] The correspondence between the first digital signal, the second digital signal, and the first control instruction and the second control instruction output by the first logic gate controller 125 and the second logic gate controller 126 can be referred to Table 1. Among them, when the first digital signal and the second digital signal are "1", it means that a charging device is inserted into the corresponding charging port, and when the first digital signal and the second digital signal are "0", it means that no charging device is inserted into the corresponding charging port. When the first control instruction and the second control instruction are "1", it means that the corresponding relay of the charging port is closed, and when the first control instruction and the second control instruction are "0", it means that the corresponding relay of the charging port is disconnected.

[0032] Table 1 Truth table of the first digital signal, the second digital signal, the first control instruction, and the second control instruction

[0033] First digital signal Second digital signal First control instruction Second control instruction 1 1 0 0 0 0 0 0 1 0 1 0 0 1 0 1

[0034] In Figure 1 this, the first control unit 121 can include a first amplification device 127, and the second control unit 122 can include a second amplification device 128. The first amplification device 127 can amplify the voltage of the first digital signal for output to the first relay 133, and the second amplification device 128 can amplify the voltage of the second digital signal for output to the second relay 134. For example, after the first input signal and the second input signal respectively pass through the first comparator 123 and the second comparator 124, digital signals with a voltage of 3.3V can be output respectively, and the amplification device amplifies the voltage of the digital signal, for example, amplifying the voltage to 12V, so as to provide an effective and constant drive voltage to the relay of the charging port and improve the stability and reliability of the charging management system 100.

[0035] In some embodiments, the first amplifying device 127 and the second amplifying device 128 may be triodes, voltage amplifiers, etc., to amplify the voltage of the digital signal output by the comparator.

[0036] In some embodiments, the charging management system 100 may be installed near the on-board charger (OBC) of the vehicle. Specifically, it is installed between the charging port of the vehicle and the on-board charger. When the relay of the charging port is closed, the charging port is connected to the on-board charger, and the charging of the vehicle starts. Additionally, the charging management system 100 may also be installed in the charging device. Specifically, it is integrated with the external signal generator of the charging device to work in cooperation with the external signal generator to perform the charging process of the vehicle.

[0037] The charging management system of the present invention distributes the power of the charging port by detecting whether there is a CP signal input at the charging port. Since after establishing low-voltage communication between the charging device and the vehicle, the high-voltage power supply of the charging device starts to transmit, the charging management system can disconnect the power line before successfully establishing low-voltage communication between the charging device and the vehicle, that is, before the high-voltage current works, to improve the safety of the vehicle charging process.

[0038] It should be understood that the embodiments shown in the figures only display the optional configuration modes of the charging management system of the vehicle according to the present invention. However, they are only illustrative and not restrictive. Without departing from the spirit and scope of the present invention, other configuration modes may also be adopted.

[0039] The technical content and technical features of the present invention have been disclosed above. However, it can be understood that under the creative concept of the present invention, those skilled in the art can make various changes and improvements to the above-disclosed concept, but they all fall within the protection scope of the present invention. The description of the above embodiments is illustrative rather than restrictive, and the protection scope of the present invention is determined by the claims.

Claims

1. A charging management system for a vehicle, characterized in that, The charging management system (100) includes: An input module (110), the input module (110) includes at least a first input unit (111) and a second input unit (112), the first input unit (111) and the second input unit (112) are configured to provide a first input signal from a first charging port of the vehicle and a second input signal from a second charging port respectively; A control module (120), the control module (120) includes at least a first control unit (121) and a second control unit (122), the first control unit (121) is configured to generate a first control instruction based on the first input signal and the second input signal, the second control unit (122) is configured to generate a second control instruction based on the first input signal and the second input signal; and An execution module (130), the execution module (130) includes at least a first execution unit (131) and a second execution unit (132), the first execution unit (131) is configured to control the closing and opening of a first relay (133) of the first charging port in response to the first control instruction, and / or the second execution unit (132) is configured to control the closing and opening of a second relay (134) of the second charging port in response to the second control instruction.

2. The charging management system for a vehicle according to claim 1, characterized in that, The first control unit (121) and the second control unit (122) respectively include a first comparator (123) and a second comparator (124), the first comparator (123) is configured to generate a first digital signal based on the first input signal, the second comparator (124) is configured to generate a second digital signal based on the second input signal.

3. The charging management system of a vehicle according to claim 2, wherein The first comparator (123) is configured to compare the first input signal with a ground signal to generate the first digital signal, the second comparator (124) is configured to compare the second input signal with a ground signal to generate the second digital signal.

4. The charging management system of a vehicle according to claim 2, wherein The first control unit (121) and the second control unit (122) respectively include a first logic gate controller (125) and a second logic gate controller (126), the first logic gate controller (125) is configured to output the first control instruction based on the first digital signal and the second digital signal, the second logic gate controller (126) is configured to output the second control instruction based on the first digital signal and the second digital signal.

5. The charging management system of a vehicle according to claim 4, wherein, The first logic gate controller (125) and the second logic gate controller (126) are configured to output a first relay opening instruction and a second relay opening instruction respectively when the first digital signal and the second digital signal are the same.

6. The charging management system of a vehicle according to claim 4, wherein The first logic gate controller (125) is configured to output the first control instruction based on the first digital signal when the first digital signal and the second digital signal are different, the second logic gate controller (126) is configured to output the second control instruction based on the second digital signal when the first digital signal and the second digital signal are different.

7. The charging management system of a vehicle according to claim 2, wherein The first control unit (121) and the second control unit (122) respectively include a first amplifying device (127) and a second amplifying device (128). The first amplifying device (127) is configured to amplify the voltage of the first digital signal for output to the first relay (133), and the second amplifying device (128) is configured to amplify the voltage of the second digital signal for output to the second relay (134).

8. The charging management system for a vehicle according to any one of claims 1 to 7, characterized in that, The first input signal and the second input signal are control guiding signals for monitoring the interaction between the vehicle and the first charging port and the second charging port.

9. The charging management system for a vehicle according to claim 8, wherein The control guiding signal is configured to indicate the charging state of the vehicle.

10. A vehicle, characterized in that, The vehicle includes the charging management system of the vehicle according to any one of claims 1 to 9, wherein the charging management system is disposed between the charging port of the vehicle and the on-vehicle charger, or the charging management system is integrated with an external signal generator of the charging device used by the vehicle.

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