Charging system and method of new energy carrier and new energy carrier

Abstract

The embodiment of the application discloses a charging system, a charging method and a new energy carrier, and relates to the technical field of new energy. The charging system comprises a charging socket seat panel, a battery management unit and a battery pack. The charging socket seat panel is integrated with a charging socket body and a charging communication protocol conversion unit. The output port of the charging socket body is connected with the input port of the charging communication protocol conversion unit. The output port of the charging communication protocol conversion unit is connected with the input port of the battery management unit. The output port of the battery management unit is connected with the battery pack. The charging socket body is used for transmitting the international charging signal transmitted by the pin to the charging communication protocol conversion unit in the case of pin joint with international charging equipment. The charging communication protocol conversion unit is used for converting the international charging signal into a domestic charging signal and sending the domestic charging signal to the battery management unit. The battery management unit is used for charging the battery pack based on the domestic charging signal.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of new energy vehicles, and in particular to a charging system of a new energy vehicle, a charging method and the new energy vehicle. BACKGROUND

[0002] The Electric Vehicle Communication Controller (EVCC) is used as a communication translation component to achieve compatibility with charging in different countries.

[0003] In the development process of a vehicle, a special space needs to be reserved for arranging the EVCC, and sometimes the vehicle structure needs to be modified. For example, in the related art, the inside of the charging seat end is modified and the EVCC is arranged inside the charging seat end.

[0004] However, arranging the EVCC in the above manner has some disadvantages. Since the charging seat end itself has integrated a large number of electronic components and is in a highly integrated state, modifying the internal structure of the charging seat end undoubtedly increases the complexity and cost of development, and has a long development cycle. SUMMARY

[0005] Embodiments of the present application provide a charging system of a new energy vehicle, a charging method and the new energy vehicle. The technical solutions are as follows:

[0006] In one aspect, the present application provides a charging system of a new energy vehicle, which comprises a charging port seat panel, a battery management unit and a battery pack, and the charging port seat panel is integrated with a charging socket body and a charging communication protocol conversion unit;

[0007] The output port of the charging socket body is connected to the input port of the charging communication protocol conversion unit, the output port of the charging communication protocol conversion unit is connected to the input port of the battery management unit, and the output port of the battery management unit is connected to the battery pack;

[0008] The charging socket body is configured to, in the case that the input port is connected to an international charging device through a pin, send an international charging signal transmitted by the pin to the charging communication protocol conversion unit, wherein the international charging signal adopts a format indicated by an international charging communication protocol;

[0009] The charging communication protocol conversion unit is configured to convert the international charging signal into a domestic charging signal, wherein the domestic charging signal adopts a format indicated by a domestic charging communication protocol, the domestic charging communication protocol is different from the international charging communication protocol, and the domestic charging signal is sent to the battery management unit;

[0010] The battery management unit is configured to charge the battery pack based on the domestic charging signal.

[0011] In another aspect, the embodiments of the present application provide a charging method for a new energy vehicle. The method is used in a charging system, and the charging system includes a charging port seat panel, a battery management unit and a battery pack.

[0012] The output port of the charging socket body is connected to the input port of the charging communication protocol conversion unit, the output port of the charging communication protocol conversion unit is connected to the input port of the battery management unit, and the output port of the battery management unit is connected to the battery pack.

[0013] The method includes:

[0014] Through the charging socket body, the international charging signal transmitted by the pins is sent to the charging communication protocol conversion unit in the case that the input port is connected to the international charging equipment through the pins, and the international charging signal is in the format indicated by the international charging communication protocol.

[0015] Through the charging communication protocol conversion unit, the international charging signal is converted into a domestic charging signal, the domestic charging signal is in the format indicated by a domestic charging communication protocol, the domestic charging communication protocol is different from the international charging communication protocol, and the domestic charging signal is sent to the battery management unit.

[0016] Through the battery management unit, the battery pack is charged based on the domestic charging signal.

[0017] In another aspect, the embodiments of the present application provide a new energy vehicle, which is provided with the charging system as described in any of the above embodiments.

[0018] In the embodiments of the present application, the charging communication protocol conversion unit and the charging socket body are integrated on the charging port seat panel, instead of being integrated in the charging socket body. Considering that a new panel needs to be opened for new vehicle models in both domestic and international markets, the development cost is saved and the development cycle is shortened on the one hand, and the layout of the entire charging system is more compact and reasonable, the wiring complexity in the system is reduced, and the probability of failure is reduced on the other hand. The charging system of the new energy vehicle provided in the present application provides a strong guarantee for the convenient charging of the new energy vehicle in the global range. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 is a schematic diagram of a charging system of a new energy vehicle provided by an exemplary embodiment of the present application.

[0021] Figure 2 is a schematic diagram of a charging port seat panel provided by an exemplary embodiment of the present application.

[0022] Figure 3 is a schematic diagram of direct current charging and alternating current charging provided by an exemplary embodiment of the present application.

[0023] Figure 4 is a schematic diagram of charging end provided by an exemplary embodiment of the present application.

[0024] Figure 5 is a flow chart of a charging method of a new energy vehicle provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0026] The new energy vehicle exported to foreign countries needs to reserve a special space to arrange the EVCC to be compatible with the charging equipment in different countries. In the related art, since the charging seat end itself has integrated a large number of electronic components, it is in a highly integrated state, and the development cost of arranging the EVCC inside the charging seat end is large, and the development cycle is long.

[0027] Therefore, the present application provides a charging system of a new energy vehicle, which integrates the charging socket body and the EVCC through the charging port seat panel, so as to reduce the integration cost of the EVCC and shorten the development cycle.

[0028] Referring to Figure 1 , Figure 1 is a schematic diagram of a charging system of a new energy vehicle provided by an exemplary embodiment of the present application.

[0029] Optionally, the new energy vehicle includes an electric vehicle or a hybrid vehicle.

[0030] In some embodiments, the charging system includes a charging port seat panel 110, a battery management unit 120 and a battery pack 130.

[0031] The charging socket seat panel 110 is integrated with a charging socket body 111 and a charging communication protocol conversion unit 112.

[0032] In some embodiments, the output port of the charging socket body 111 is connected to the input port of the charging communication protocol conversion unit 112, the output port of the charging communication protocol conversion unit 112 is connected to the input port of the battery management unit 120, and the output port of the battery management unit 120 is connected to the battery pack 130.

[0033] Optionally, the output port of the charging socket body 111 is connected to the input port of the charging communication protocol conversion unit 112 through a specially designed adaptation line, which has good signal transmission stability and can effectively resist external electromagnetic interference, ensuring that the international charging signal will not be distorted or lost during transmission. Optionally, the output port of the charging communication protocol conversion unit 112 is connected to the input port of the battery management unit 120 using a high-speed data transmission interface to ensure that the converted domestic charging signal can be quickly and accurately transmitted to the battery management unit 120. Optionally, the output port of the battery management unit 120 is connected to the battery pack 130 through a high-current cable to meet the demand for large current during charging of the battery pack 130.

[0034] In some embodiments, the charging socket body is configured to send the international charging signal transmitted by the pins to the charging communication protocol conversion unit when the input port is connected to the international charging device through pin connection, and the international charging signal is in the format indicated by the international charging communication protocol.

[0035] Optionally, the international charging device can be a charging pile, a charging gun, or any possible new energy vehicle charging device that adopts international standards (such as European standards, American standards, or Japanese standards).

[0036] Optionally, the international charging communication protocol includes, for example, DIN70121 protocol, ISO15118 protocol, IEC61851-1 protocol, and CHAdeMO protocol.

[0037] In some embodiments, the charging communication protocol conversion unit (Electric Vehicle Communication Controller, EVCC) is configured to convert the international charging signal into a domestic charging signal and send the domestic charging signal to the battery management unit.

[0038] In some embodiments, the charging communication protocol conversion unit (Electric Vehicle Communication Controller, EVCC) is configured to convert the international charging signal into a domestic charging signal and send the domestic charging signal to the battery management unit.

[0039] Optionally, the domestic charging communication protocol is GB / T 27930 protocol.

[0040] Optionally, when the international charging device accesses the charging socket body 111, the international charging signal transmitted by the pins of the international charging device is transmitted to the charging communication protocol conversion unit 112 through the internal circuit structure of the charging socket body 111 in the encoding mode indicated by the international charging communication protocol. The charging communication protocol conversion unit 112 internally includes a signal analysis and conversion circuit and an algorithm program based on a special chip. The program first decodes the international charging signal to identify various charging parameters such as voltage, current, and charging mode information. Then, according to the domestic charging communication protocol rules pre-stored in the chip, the parameters are re-encoded to generate a domestic charging signal that conforms to the format indicated by the domestic charging communication protocol.

[0041] Optionally, the international charging signal is a power line communication signal (PLC), and the domestic charging signal is a controller area network signal (CAN).

[0042] In some embodiments, a battery management unit (BMS) is used to charge the battery pack based on the domestic charging signal.

[0043] Optionally, after receiving the domestic charging signal, the battery management unit 120 will perform a secondary check on the charging parameters in the signal to ensure its accuracy and safety. After the check is passed, the battery management unit 120 will control the internal power regulation circuit according to the charging parameters to adjust the charging voltage and current output to the battery pack 130. During the charging process, the battery management unit 120 will monitor the state parameters of the battery pack 130 in real time, including the terminal voltage of the battery, the charging current, the battery temperature, etc. Once it is detected that the state parameters of the battery pack 130 exceed the pre-set safety range, the battery management unit 120 will immediately take appropriate protective measures, such as reducing the charging current, stopping the charging, etc., to prevent the battery pack 130 from overcharging, overheating, and other safety problems.

[0044] In summary, since the charging communication protocol conversion unit 112 and the charging socket body 111 are integrated on the charging socket panel 110, rather than integrating the charging communication protocol conversion unit 112 inside the charging socket body 111, considering that new panels will be needed for new vehicle models internationally and domestically, on the one hand, the development cost is saved and the development cycle is shortened; on the other hand, the layout of the entire charging system is more compact and reasonable, reducing the complexity of internal wiring and the probability of failure. The charging system of the new energy vehicle provided by the present application provides a strong guarantee for the convenient charging of new energy vehicles worldwide.

[0045] In some embodiments, the charging socket body includes a direct current charging socket body and an alternating current charging socket body.

[0046] The direct current charging socket body is adapted to international direct current charging equipment, and the alternating current charging socket body is adapted to international alternating current charging equipment.

[0047] In some embodiments, the direct current charging socket body is configured to transmit an international direct current charging signal transmitted by a pin to the charging communication protocol conversion unit in a case where the input port is connected to the international direct current charging equipment through the pin.

[0048] In some embodiments, the alternating current charging socket body is configured to transmit an international alternating current charging signal transmitted by a pin to the charging communication protocol conversion unit in a case where the input port is connected to the international alternating current charging equipment through the pin.

[0049] Referring to Figure 2 , Figure 2 is a schematic diagram of a charging socket panel provided by an exemplary embodiment of the present application.

[0050] As Figure 2 shown, the charging socket panel 210 integrates a direct current charging socket body 211, an alternating current charging socket body 212, and a charging communication protocol conversion unit 213.

[0051] In some embodiments, the charging communication protocol conversion unit is configured to convert an international direct current charging signal into a domestic direct current charging signal, or convert an international alternating current charging signal into a domestic alternating current charging signal.

[0052] For example, the charging communication protocol conversion unit 213 converts an international direct current charging signal transmitted by the direct current charging socket body 211 into a domestic direct current charging signal, or converts an international alternating current charging signal transmitted by the alternating current charging socket body 211 into a domestic alternating current charging signal.

[0053] Referring to Figure 3 , Figure 3 is a schematic diagram of direct current charging and alternating current charging provided by an exemplary embodiment of the present application.

[0054] The charging socket panel 310 integrates a direct current charging socket body 311, an alternating current charging socket body 312, and a charging protocol conversion unit 313.

[0055] In the scenario of direct current charging, the direct current charging socket body 311 is configured to transmit an international direct current charging signal transmitted by a pin to the charging communication protocol conversion unit 313 in a case where the input port is connected to the international direct current charging equipment through the pin. The charging communication protocol conversion unit 313 is configured to transmit a domestic direct current charging signal to the battery management unit 330.

[0056] As to the specific way in which the charging communication protocol conversion unit sends the domestic direct current charging signal to the battery management unit, in some embodiments, the charging system further comprises a high-voltage power distribution unit (PDU).

[0057] The output port of the charging communication protocol conversion unit is connected to the input port of the high-voltage power distribution unit, and the output port of the high-voltage power distribution unit is connected to the input port of the battery management unit.

[0058] In some embodiments, the charging communication protocol conversion unit 313 is configured to send the domestic direct current charging signal to the high-voltage power distribution unit 320.

[0059] In some embodiments, the high-voltage power distribution unit 320 is configured to send the domestic direct current charging signal to the battery management unit 330.

[0060] In some embodiments, the battery management unit 330 is configured to, in the case that a charging condition is met, enable the direct current charging permission of the direct current charging socket body, and charge the battery pack 340 based on the domestic direct current charging signal.

[0061] The charging condition comprises at least one of a battery pack power condition, a domestic direct current charging signal voltage condition, and a domestic direct current charging signal current condition.

[0062] For example only, the charging condition comprises that the battery pack power is less than 99%, the domestic direct current charging signal voltage meets a preset voltage range, and the domestic direct current charging signal current meets a preset current range.

[0063] In the scenario of alternating current charging, the alternating current charging socket body 312 is configured to, in the case that the input port is connected to the international alternating current charging device through pin engagement, send an international alternating current charging signal transmitted by the pins to the charging communication protocol conversion unit 313.

[0064] In some embodiments, the charging system further comprises an on-board charger (OBC).

[0065] The output port of the charging communication protocol conversion unit is connected to the input port of the on-board charger, and the output port of the on-board charger is connected to the input port of the battery management unit.

[0066] In some embodiments, the charging communication protocol conversion unit 313 is configured to send the domestic alternating current charging signal to the on-board charger 321.

[0067] Optionally, the on-board charger unit is located in the high-voltage distribution box. For example, the charging communication protocol conversion unit 313 is configured to send the domestic alternating current charging signal to the on-board charger unit 321 in the high-voltage distribution box 320.

[0068] In some embodiments, the on-board charger unit 321 is configured to convert the domestic alternating current charging signal into a domestic direct current charging signal; and send a charging request to the battery management unit 330.

[0069] In some embodiments, the battery management unit 330 is configured to send a request reply to the on-board charger unit 321.

[0070] The request reply indicates that the on-board charger unit enables the alternating current charging permission of the alternating current charging socket body if the charging condition is met.

[0071] The charging condition includes at least one of a battery pack power condition, a domestic direct current charging signal voltage condition, and a domestic direct current charging signal current condition.

[0072] For example, the charging condition includes that the battery pack power is less than 99%, the domestic direct current charging signal voltage meets a preset voltage range, and the domestic direct current charging signal current meets a preset current range.

[0073] In some embodiments, the battery management unit 330 is configured to charge the battery pack 340 based on the domestic direct current charging signal converted by the on-board charger unit 321.

[0074] The charging system of the new energy vehicle provided by the embodiment can provide powerful guarantee for the convenient charging of the new energy vehicle in a global range in the scenarios of direct current charging and alternating current charging.

[0075] The following describes the scenario of charging end.

[0076] Referring to Figure 4 , Figure 4 is a schematic diagram of charging end provided by an example embodiment of the present application.

[0077] The direct current charging socket body 411, the alternating current charging socket body 412, and the charging communication protocol conversion unit 413 are integrated in the charging socket panel 410.

[0078] In some embodiments, the battery management unit 430 is configured to send a domestic charging end instruction to the charging communication protocol conversion unit 413 if it is detected that the battery pack 440 is in a full state. The domestic charging end instruction is in a format indicated by a domestic charging communication protocol.

[0079] In some embodiments, the charging communication protocol conversion unit 413 is configured to convert the domestic charging end instruction into an international charging end instruction in a format indicated by the international charging communication protocol, and send the international charging end instruction to the charging socket body.

[0080] For example, in the scenario of direct current charging end, the charging communication protocol conversion unit 413 is configured to send an international direct current charging end instruction to the direct current charging socket body 411. In the scenario of alternating current charging end, the charging communication protocol conversion unit 413 is configured to send an international alternating current charging end instruction to the alternating current charging socket body 412.

[0081] In some embodiments, the charging socket body is configured to send an international charging end instruction to an international charging device through a pin to instruct the international charging device to end charging.

[0082] For example, in the scenario of direct current charging end, the direct current charging socket body 411 sends an international direct current charging end instruction to an international direct current charging device through a pin to instruct the international direct current charging device to end direct current charging. In the scenario of alternating current charging end, the alternating current charging socket body 412 sends an international alternating current charging end instruction to an international alternating current charging device through a pin to instruct the international alternating current charging device to end alternating current charging.

[0083] In a possible scenario, the new energy vehicle can determine whether the EVCC is built-in with an available charging communication protocol in combination with the positioning of the vehicle. In the case where the EVCC is not built-in with a charging communication protocol, the charging communication protocol required for the positioning can be obtained in advance and written.

[0084] In a possible implementation, the charging communication protocol conversion unit is built-in with a communication protocol mapping table.

[0085] The communication protocol mapping table is configured to represent the correspondence between the positioning of the new energy vehicle and the charging communication protocol.

[0086] For example only, in the case where the positioning of the new energy vehicle belongs to country A, the corresponding charging communication protocol a in the communication protocol mapping table, wherein the charging communication protocol a belongs to the charging communication protocol applicable in country A.

[0087] In some embodiments, the new energy vehicle further comprises a vehicle positioning unit and a network communication unit.

[0088] The vehicle positioning unit is configured to obtain the real-time positioning of the new energy vehicle, and the network communication unit is configured to realize communication between each module in the new energy vehicle and the server through a network. Optionally, the vehicle positioning unit of the new energy vehicle is equipped with high-precision global positioning system (GPS), Beidou satellite navigation system and other advanced positioning technologies, which can obtain the geographic position information of the new energy vehicle in real time and accurately, including longitude and latitude, altitude and other data, so as to determine the real-time positioning of the new energy vehicle. The network communication unit supports multiple network communication modes, such as 4G, 5G cellular network and Wi-Fi, etc. Through these network communication technologies, data interaction between each module in the new energy vehicle, including the charging socket body, the charging communication protocol conversion unit, the OBC, the PDU and the vehicle control system, is realized, and a stable communication link between the new energy vehicle and the remote server is also established, so as to ensure that the vehicle can receive instructions and data updates from the server in time and upload its own running state information.

[0089] In some embodiments, the charging communication protocol conversion unit is configured to determine the real-time charging communication protocol corresponding to the real-time positioning from the communication protocol mapping table based on the real-time positioning of the new energy vehicle sent by the vehicle positioning unit.

[0090] In some embodiments, the charging protocol communication protocol conversion unit is configured to send a communication protocol writing request to the network communication unit in the case that the real-time charging communication protocol is not written.

[0091] The communication protocol writing request contains the protocol identifier corresponding to the real-time communication protocol. Optionally, the protocol identifier can accurately indicate the specific type and version information of the charging communication protocol required to be provided by the server.

[0092] After receiving the communication protocol writing request, the network communication unit sends the request to the server through the network. After receiving the communication protocol writing request, the server searches its own database according to the protocol identifier, finds the corresponding charging communication protocol data, and packs it into communication protocol writing data, which is returned to the network communication unit of the new energy vehicle through the network.

[0093] In some embodiments, the charging protocol communication protocol conversion unit is configured to write the real-time charging communication protocol based on the communication protocol writing data returned by the network communication unit.

[0094] Optionally, after receiving the communication protocol write data returned by the network communication unit, the charging communication protocol conversion unit will write the real-time charging communication protocol into its own storage module according to a specific write process. In this way, the charging communication protocol conversion unit can efficiently and accurately convert the international charging signal according to the newly written real-time charging communication protocol in the subsequent charging process, ensuring that the new energy vehicle can successfully complete the charging operation in different regions.

[0095] Referring to Figure 5 , Figure 5 is a flowchart of a charging method of a new energy vehicle provided by an exemplary embodiment of the present application.

[0096] In some embodiments, the method is used for a charging system, which includes a charging port seat panel, a battery management unit and a battery pack, and the charging port seat panel is integrated with a charging socket body and a charging communication protocol conversion unit. The output port of the charging socket body is connected to the input port of the charging communication protocol conversion unit, the output port of the charging communication protocol conversion unit is connected to the input port of the battery management unit, and the output port of the battery management unit is connected to the battery pack.

[0097] For more information about the charging system, please refer to the previous embodiments and their related descriptions, which will not be repeated here.

[0098] The charging method of the new energy vehicle includes the following steps.

[0099] Step 501, through the charging socket body, in the case that the input port is connected to the international charging device through the pins, the international charging signal transmitted by the pins is sent to the charging communication protocol conversion unit, and the international charging signal adopts the format indicated by the international charging communication protocol.

[0100] Optionally, the international charging device can be a charging pile, a charging gun or any possible new energy vehicle charging device that adopts international standards (such as European standards, American standards or Japanese standards).

[0101] Optionally, the international charging communication protocol includes, for example, DIN70121 protocol, ISO15118 protocol, IEC61851-1 protocol and CHAdeMO protocol, etc.

[0102] Step 502, through the charging communication protocol conversion unit, convert the international charging signal into a domestic charging signal, and send the domestic charging signal to the battery management unit, wherein the domestic charging signal adopts the format indicated by the domestic charging communication protocol, and the domestic charging communication protocol is different from the international charging communication protocol.

[0103] In some embodiments, an electric vehicle communication controller (EVCC) is used to convert the international charging signal into a domestic charging signal and send the domestic charging signal to the battery management unit.

[0104] The domestic charging signal is in a format indicated by a domestic charging communication protocol, which is different from the international charging communication protocol.

[0105] Optionally, the domestic charging communication protocol is GB / T 27930 protocol.

[0106] Optionally, when the international charging device is connected to the charging socket body, the international charging signal transmitted by the pins of the international charging device is transmitted to the charging communication protocol conversion unit through the internal circuit structure of the charging socket body in an encoding manner indicated by the international charging communication protocol. The charging communication protocol conversion unit internally includes a signal analysis and conversion circuit and an algorithm program based on a special chip. The program first decodes the international charging signal and identifies various charging parameters such as voltage, current, and charging mode. Then, according to the domestic charging communication protocol rules pre-stored in the chip, the parameters are re-encoded to generate a domestic charging signal in a format indicated by the domestic charging communication protocol.

[0107] Optionally, the international charging signal is a power line communication signal (PLC), and the domestic charging signal is a controller area network signal (CAN).

[0108] Step 503: Charging the battery pack based on the domestic charging signal through the battery management unit.

[0109] Optionally, after receiving the domestic charging signal, the battery management unit will perform a secondary check on the charging parameters in the signal to ensure its accuracy and safety. After the check passes, the battery management unit will control the internal power regulation circuit according to the charging parameters to adjust the charging voltage and current output to the battery pack. During the charging process, the battery management unit will monitor the state parameters of the battery pack in real time, including the terminal voltage of the battery, the charging current, the battery temperature, etc. Once it is detected that the state parameters of the battery pack exceed the preset safety range, the battery management unit will immediately take appropriate protective measures, such as reducing the charging current, stopping the charging, etc., to prevent the battery pack from overcharging, overheating, and other safety problems.

[0110] In summary, since the charging communication protocol conversion unit and the charging socket body are integrated on the charging socket panel instead of being integrated inside the charging socket body, considering that a new panel needs to be opened for new vehicle models at home and abroad, on the one hand, the development cost is saved and the development cycle is shortened; on the other hand, the layout of the entire charging system is more compact and reasonable, the wiring complexity inside the system is reduced, and the probability of failure is reduced. The charging system of the new energy carrier provided in the present application provides a strong guarantee for the convenient charging of the new energy carrier in the global range.

[0111] The embodiment of the present application also provides a new energy carrier, which is provided with the charging system of the new energy carrier according to any one of the above embodiments.

[0112] Optionally, the new energy carrier includes an electric vehicle or a hybrid vehicle.

[0113] The above description is only optional embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A charging system for a new energy vehicle, characterized in that, The charging system includes a charging port socket panel, a battery management unit, and a battery pack. The charging port socket panel integrates a charging socket body and a charging communication protocol conversion unit. The output port of the charging socket body is connected to the input port of the charging communication protocol conversion unit, the output port of the charging communication protocol conversion unit is connected to the input port of the battery management unit, and the output port of the battery management unit is connected to the battery pack. The charging socket body is used to send the international charging signal transmitted by the pin to the charging communication protocol conversion unit when the input port is connected to the international charging device through the pin. The international charging signal adopts the format indicated by the international charging communication protocol. The charging communication protocol conversion unit is used to convert the international charging signal into a domestic charging signal, wherein the domestic charging signal adopts a format indicated by a domestic charging communication protocol, which is different from the international charging communication protocol; and to send the domestic charging signal to the battery management unit. The battery management unit is used to charge the battery pack based on the domestic charging signal.

2. The charging system according to claim 1, characterized in that, The charging socket body includes a DC charging socket body and an AC charging socket body; The DC charging socket body is used to send the international DC charging signal transmitted by the pin to the charging communication protocol conversion unit when the input port is connected to the international DC charging equipment through the pin. The AC charging socket body is used to send the international AC charging signal transmitted by the pin to the charging communication protocol conversion unit when the input port is connected to the international AC charging device through the pin. The charging communication protocol conversion unit is used to convert the international DC charging signal into a domestic DC charging signal, or to convert the international AC charging signal into a domestic AC charging signal.

3. The charging system according to claim 2, characterized in that, The charging communication protocol conversion unit is used to send the domestic DC charging signal to the battery management unit; The battery management unit is used to enable the DC charging permission of the DC charging socket body when the charging conditions are met, and to charge the battery pack based on the domestic DC charging signal. The charging conditions include at least one of the battery pack's power condition, the voltage condition of the domestic DC charging signal, and the current condition.

4. The charging system according to claim 3, characterized in that, The charging system also includes an on-board charger unit; the output port of the charging communication protocol conversion unit is connected to the input port of the on-board charger unit, and the output port of the on-board charger unit is connected to the input port of the battery management unit. The charging communication protocol conversion unit is used to send the domestic AC charging signal to the on-board charger unit; The on-board charger unit is used to convert the domestic AC charging signal into a domestic DC charging signal; and to send a charging request to the battery management unit. The battery management unit is used to send a request response to the on-board charger unit, and the request response instructs the on-board charger unit to enable the AC charging permission of the AC charging socket body when the charging conditions are met. The battery management unit is used to charge the battery pack based on the domestic DC charging signal converted by the on-board charger unit.

5. The charging system according to claim 4, characterized in that, The charging system also includes a high-voltage power distribution box, and the on-board charger unit is located inside the high-voltage power distribution box; the output port of the charging communication protocol conversion unit is connected to the input port of the high-voltage power distribution box, and the output port of the high-voltage power distribution box is connected to the input port of the battery management unit; The charging communication protocol conversion unit is used to send the domestic DC charging signal to the high-voltage distribution box; The high-voltage distribution box is used to send the domestic DC charging signal to the battery management unit; The charging communication protocol conversion unit is used to send the domestic AC charging signal to the on-board charger unit in the high-voltage distribution box.

6. The charging system according to any one of claims 1 to 5, characterized in that, The battery management unit is used to send a domestic charging end command to the charging communication protocol conversion unit when it detects that the battery pack is fully charged. The domestic charging end command adopts the format indicated by the domestic charging communication protocol. The charging communication protocol conversion unit is used to convert the domestic charging end command into an international charging end command, wherein the international charging end command adopts the format indicated by the international charging communication protocol; and to send the international charging end command to the charging socket body. The charging socket body is used to send an international charging end command to the international charging device via pins, so as to instruct the international charging device to end charging.

7. The charging system according to any one of claims 1 to 5, characterized in that, The charging communication protocol conversion unit has a built-in communication protocol mapping table, which is used to characterize the correspondence between the positioning of the new energy vehicle and the charging communication protocol. The charging communication protocol conversion unit is used to determine the real-time charging communication protocol corresponding to the real-time location from the communication protocol mapping table based on the real-time location of the new energy vehicle sent by the vehicle positioning unit. The charging communication protocol conversion unit is used to send a communication protocol writing request to the network communication unit when the real-time charging communication protocol has not been written. The communication protocol writing request includes the protocol identifier corresponding to the real-time communication protocol. The charging communication protocol conversion unit is used to write the real-time charging communication protocol based on the communication protocol writing data returned by the network communication unit.

8. The charging system according to any one of claims 1 to 5, characterized in that, The international charging signal is a power line communication (PLC) signal, and the domestic charging signal is a controller area network (CAN) signal.

9. A charging method for a new energy vehicle, characterized in that, The method is used in a charging system, which includes a charging port panel, a battery management unit, and a battery pack. The charging port panel integrates a charging socket body and a charging communication protocol conversion unit. The output port of the charging socket body is connected to the input port of the charging communication protocol conversion unit, the output port of the charging communication protocol conversion unit is connected to the input port of the battery management unit, and the output port of the battery management unit is connected to the battery pack. The method includes: When the input port of the charging socket body is connected to the international charging device via pins, the international charging signal transmitted by the pins is sent to the charging communication protocol conversion unit. The international charging signal adopts the format indicated by the international charging communication protocol. The charging communication protocol conversion unit converts the international charging signal into a domestic charging signal, which adopts a format indicated by the domestic charging communication protocol, which is different from the international charging communication protocol; and sends the domestic charging signal to the battery management unit. The battery management unit charges the battery pack based on the domestic charging signal.

10. A new energy vehicle, characterized in that, The new energy vehicle is equipped with a charging system as described in any one of claims 1 to 8.

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