Charging System and Control Method

Abstract

This application discloses a charging system and its control method. The charging system includes a control module, a power module, a power distribution module, and a terminal module. The power module outputs power to the terminal module through the power distribution module. The control module is connected to the power distribution module. The control module is configured to determine the target connection state between the power module, the power distribution module, and the terminal module based on the initial voltage data of the terminal module, so that the wiring sequence of the power output terminal of the power module and the power input terminal of the terminal module is consistent. The initial voltage data refers to the voltage data of the terminal module in the initial connection state of the power module, the power distribution module, and the terminal module. This application can automatically correct wiring sequence errors in the charging system, improving the error correction efficiency and thus enhancing the reliability and safety of the charging system.

Description

Technical Field

[0001] This application relates to the field of charging system control technology, and in particular to a charging system and its control method. Background Technology

[0002] Charging stations supply power to terminals via power modules. Incorrect wiring sequences, such as reversed positive and negative terminals, between the power module and the terminal can damage the equipment and cause safety accidents. Related technologies rely on manual inspection and correction to prevent such accidents. However, manual inspection is inefficient, impacting the reliability and safety of the charging station. Summary of the Invention

[0003] This application provides a charging system and its control method, which can automatically correct wiring sequence errors in the charging system, improve error correction efficiency, and further improve the reliability and safety of the charging system.

[0004] To achieve the above objectives, according to a first aspect of this application, a charging system is provided, comprising: a control module, a power module, a power distribution module, and a terminal module. The power module outputs power to the terminal module through the power distribution module, and the control module is connected to the power distribution module. The control module is configured to: determine a target connection state between the power module, the power distribution module, and the terminal module based on initial voltage data of the terminal module, such that the wiring sequence of the power output terminal of the power module and the power input terminal of the terminal module is consistent. The initial voltage data refers to the voltage data corresponding to the terminal module in the initial connection state of the power module, the power distribution module, and the terminal module.

[0005] In some embodiments, the power distribution module includes a first power distribution output terminal and a second power distribution output terminal, and the power input terminal of the terminal module 400 includes a first power input terminal and a second power input terminal; in a first connection state, the first power distribution output terminal is connected to the first power input terminal, and the second power distribution output terminal is connected to the second power input terminal; in a second connection state, the first power distribution output terminal is connected to the second power input terminal, and the second power distribution output terminal is connected to the first power input terminal; wherein, the initial connection state is either the first connection state or the second connection state; the control module is further configured to: when the initial connection state is the first connection state, if the initial voltage data is greater than or equal to zero, then determine the first connection state as the target connection state; if the initial voltage data is less than zero, then determine the second connection state as the target connection state; when the initial connection state is the second connection state, if the initial voltage data is greater than or equal to zero, then determine the second connection state as the target connection state; if the initial voltage data is less than zero, then determine the first connection state as the target connection state.

[0006] In some embodiments, the power distribution module includes a switching switch comprising a first fixed terminal, a second fixed terminal, a first floating terminal, a second floating terminal, a third floating terminal, and a fourth floating terminal, wherein the first floating terminal is connected to the fourth floating terminal, and the second floating terminal is connected to the third floating terminal; wherein the control module is further configured to: in the first connection state, control the first fixed terminal to connect to the second floating terminal, the second fixed terminal to connect to the fourth floating terminal, the second floating terminal to connect as the first power distribution output terminal and the first power input terminal, and the fourth floating terminal to connect as the second power distribution output terminal and the second power input terminal; in the second connection state, control the first fixed terminal to connect to the first floating terminal, the second fixed terminal to connect to the third floating terminal, the fourth floating terminal to connect as the first power distribution output terminal and the first power input terminal, and the second floating terminal to connect as the second power distribution output terminal and the second power input terminal.

[0007] In some embodiments, the control module is further configured to send a switch switching command to the power distribution module based on a wiring sequence error identifier, the switch switching command including the switch identifier of the switch to be adjusted.

[0008] In some embodiments, the power module includes a first power output terminal and a second power output terminal, wherein the first power output terminal is connected to either the first fixed terminal or the second fixed terminal, and the second power output terminal is connected to either the second fixed terminal or the first fixed terminal.

[0009] In some embodiments, the control module is also connected to the terminal module, and the control module is further configured to acquire voltage data from the terminal module.

[0010] In some embodiments, the terminal module includes a first connection switch and a second connection switch, the first connection switch being connected to the first power input terminal and the second connection switch being connected to the second power input terminal; wherein, the control module is further configured to close the first connection switch and the second connection switch when the target power output by the power module meets the charging requirements.

[0011] In some embodiments, the control module is further configured to: establish a terminal polarity mapping table, the terminal polarity mapping table including the theoretical polarity and actual polarity of the first power input terminal and the second power input terminal of the terminal module.

[0012] In some embodiments, the control module is also connected to the power module, and the control module is further configured to control the power module to perform a boost operation in response to a charging command.

[0013] According to a second aspect of this application, a control method for a charging system is provided. The charging system includes a power module, a power distribution module, and a terminal module. The power module outputs power to the terminal module through the power distribution module. The control method includes: determining a target connection state between the power module, the power distribution module, and the terminal module based on initial voltage data of the terminal module; wherein the initial voltage data is the voltage data of the terminal module corresponding to the power module, the power distribution module, and the terminal module in the initial connection state.

[0014] In summary, in the above technical solution, the charging system includes a control module, a power module, a power distribution module, and a terminal module. The power module outputs power to the terminal module through the power distribution module, and the control module is connected to the power distribution module. The control module is configured to: determine the target connection state between the power module, the power distribution module, and the terminal module based on the initial voltage data of the terminal module, so that the wiring sequence of the power output terminal of the power module and the power input terminal of the terminal module is consistent; wherein, the initial voltage data is the voltage data of the terminal module corresponding to the power module, the power distribution module, and the terminal module in the initial connection state. This embodiment determines whether there is a wiring sequence error in the charging system based on the voltage data of the terminal module, and then adjusts the connection state between the power module, the power distribution module, and the terminal module through the control module, so that the power output terminal of the power module and the power input terminal of the terminal module correspond to the correct wiring sequence. This embodiment can automatically correct wiring sequence errors in the charging system, greatly improving the error correction efficiency of the charging system, and thus also improving the reliability and safety of the charging system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a charging system provided in an embodiment of this application; Figure 2 This application provides a connection diagram of a power distribution module according to an embodiment of the present application. Figure 3 This is a schematic diagram of another charging system provided in an embodiment of this application; Figure 4 A flowchart illustrating a charging system control method provided in an embodiment of this application; Figure 5 This is a flowchart illustrating another charging system control method provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures: 100. Control module; 200. Power module; 300. Power distribution module; 310. Switch; 400. Terminal module; 410. First connection switch; 420. Second connection switch. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0019] With the increasing popularity of electric vehicles, the demand for charging infrastructure is growing rapidly. In charging stations, power cabinets charge multiple terminals via power modules. If wiring sequences such as reversed positive and negative connections occur between the power modules and terminals, it can damage the equipment and lead to safety accidents. While related technologies rely on manual inspection and correction to promptly address wiring errors, manual error correction is inefficient and affects the reliability and safety of the charging system.

[0020] In view of this, embodiments of this application provide a charging system and its control method, which can automatically correct wiring sequence errors in the charging system, improve error correction efficiency, and further improve the reliability and safety of the charging system.

[0021] In a first aspect, embodiments of this application provide a charging system.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of a charging system provided in an embodiment of this application. Figure 1 As shown, the charging system includes a control module 100, a power module 200, a power distribution module 300, and a terminal module 400. The power module 200 outputs power to the terminal module 400 through the power distribution module 300. The control module 100 is connected to the power distribution module 300. The control module 100 is configured to determine the target connection state between the power module 200, the power distribution module 300, and the terminal module 400 based on the initial voltage data of the terminal module 400, so that the wiring sequence of the power output terminal of the power module 200 and the power input terminal of the terminal module 400 is consistent. The initial voltage data refers to the voltage data of the terminal module 400 in the initial connection state of the power module 200, the power distribution module 300, and the terminal module 400.

[0023] Power module 200 is the power output module in the charging system. Its input terminal is connected to the power grid. Power module 200 converts AC power from the grid into DC power, and then outputs the converted DC power to terminal devices such as vehicles through its power output terminal, thus enabling the charging operation of these devices. In some implementations, such as... Figure 1As shown, the charging system may include one or more power modules 200; when the charging system includes multiple power modules 200, the multiple power modules 200 can be assembled to form a charging pile, which can centrally convert the electrical energy of the multiple power modules 200 to transmit to the terminal device.

[0024] The terminal module 400 is a module connected to the terminal device in the charging system. Taking a vehicle as an example, the terminal module 400 receives electrical energy transmitted from the power module 200 through its power input terminal, and then transmits the received electrical energy to the vehicle or other terminal devices through interfaces such as the charging gun. In some implementations, such as... Figure 1 As shown, the charging system may include multiple terminal modules 400, which can be connected to different terminal devices to enable charging operations for different terminal devices. The voltage data of the terminal module 400 represents the voltage data when the terminal module 400 transmits electrical energy to the terminal device, such as the real-time output voltage value and output voltage polarity.

[0025] The power distribution module 300 is positioned between the power output terminal of the power module 200 and the power input terminal of the terminal module 400 to distribute and transmit the output power of the power module 200. The power distribution module 300 can flexibly allocate the power of the power module 200 according to the charging needs of the terminal equipment, improving charging efficiency and the flexibility of charging operations.

[0026] The initial connection state refers to the connection status of the power module 200, power distribution module 300, and terminal module 400 when the charging system is set up. It can also be understood as the initial state of the terminal module 400 when transmitting electrical energy to the terminal device. The wiring sequence (or wiring order) refers to the wiring order between the power output terminal of the power module 200 and the power input terminal of the terminal module 400. In other words, when the charging system is working normally, the positive power output terminal of the power module 200 must be connected to the positive power input terminal of the terminal module 400, and the negative power output terminal of the power module 200 must be connected to the negative power input terminal of the terminal module 400. Incorrect wiring sequence can cause damage to the terminal device during charging and may also lead to safety accidents.

[0027] The power module 200 is connected to the terminal module 400 through the power distribution module 300. In this embodiment, the control module 100 is connected to the power distribution module 300. Based on the voltage data of the terminal module 400 in the initial connection state, the target connection relationship between the power module 200, the power distribution module 300, and the terminal module 400 can be determined. Even if the wiring sequence of the power output terminal of the power module 200 and the power input terminal of the terminal module 400 is incorrect, it can automatically adjust and correct the wiring sequence of the power output terminal of the power module 200 and the power input terminal of the terminal module 400 to make the wiring sequence consistent.

[0028] This embodiment of the application determines whether there is a wiring sequence error in the charging system based on the voltage data of the terminal module 400. Then, the control module 100 adjusts the connection status between the power module 200, the power distribution module 300, and the terminal module 400 to ensure that the power output terminal of the power module 200 and the power input terminal of the terminal module 400 are connected in the correct wiring sequence. This embodiment of the application can intelligently and automatically correct wiring sequence errors in the charging system, greatly improving the error correction efficiency and thus enhancing the reliability and safety of the charging system.

[0029] In some embodiments, the power distribution module 300 includes a first power distribution output terminal and a second power distribution output terminal, and the power input terminal of the terminal module 400 includes a first power input terminal and a second power input terminal; in a first connection state, the first power distribution output terminal is connected to the first power input terminal, and the second power distribution output terminal is connected to the second power input terminal; in a second connection state, the first power distribution output terminal is connected to the second power input terminal, and the second power distribution output terminal is connected to the first power input terminal. The initial connection state is either the first connection state or the second connection state. The control module 100 is further configured to: when the initial connection state is the first connection state, if the initial voltage data is greater than or equal to zero, then determine the first connection state as the target connection state; if the initial voltage data is less than zero, then determine the second connection state as the target connection state; when the initial connection state is the second connection state, if the initial voltage data is greater than or equal to zero, then determine the second connection state as the target connection state; if the initial voltage data is less than zero, then determine the first connection state as the target connection state.

[0030] Please continue reading. Figure 1 The power distribution module 300 includes a first power distribution output terminal and a second power distribution output terminal, corresponding to positive and negative outputs, respectively. The terminal module 400 has a power input terminal including a first power input terminal and a second power input terminal, also corresponding to positive and negative inputs, respectively. During the initial connection process between the power distribution module 300 and the terminal module 400, the polarity of each connection terminal cannot be determined. Therefore, there are two connection states between the power distribution module 300 and the terminal module 400: a first connection state and a second connection state. In the first connection state, the first power distribution output terminal is connected to the first power input terminal, and the second power distribution output terminal is connected to the second power input terminal; in the second connection state, the first power distribution output terminal is connected to the second power input terminal, and the second power distribution output terminal is connected to the first power input terminal.

[0031] The control module 100 controls the connection status between the power distribution module 300 and the terminal module 400 based on the positive and negative states of the initial voltage data, and then determines the target connection status based on the connection status between the power distribution module 300 and the terminal module 400.

[0032] When the initial voltage data is greater than or equal to zero, i.e., the initial voltage data is positive, it indicates that the initial connection state between the power module 200, the power distribution module 300, and the terminal module 400 corresponds to the correct wiring sequence. At this time, the charging system maintains the initial connection state and outputs power to the terminal device. It can be understood that when the initial voltage data is equal to zero, no power transmission occurs between the power module 200, the power distribution module 300, and the terminal module 400, and the charging system also maintains the initial connection state.

[0033] If the initial voltage data is less than zero, i.e., the initial voltage data is negative, it indicates that the initial connection state between the power module 200, the power distribution module 300, and the terminal module 400 corresponds to an incorrect wiring sequence. At this time, the control module 100 switches and adjusts the connection state between the power distribution module 300 and the terminal module 400, thereby adjusting the initial connection state between the power module 200, the power distribution module 300, and the terminal module 400, and using the adjusted connection state as the target connection state.

[0034] For example, when the initial connection state is the first connection state, the first power distribution output terminal of the power distribution module 300 is connected to the first power input terminal of the terminal module 400, and the second power distribution output terminal is connected to the second power input terminal. If the initial voltage data is greater than or equal to zero, it indicates that the initial connection state is correct, and the current first connection state is maintained to continue power output, and the first connection state is determined as the target connection state. If the initial voltage data is less than zero, it indicates that the initial connection state is incorrect. At this time, the control module 100 adjusts the second connection state to the target connection state, that is, connects the first power distribution output terminal to the second power input terminal, and connects the second power distribution output terminal to the first power input terminal, automatically correcting the wiring sequence error.

[0035] When the initial connection state is the second connection state, the first power distribution output terminal of the power distribution module 300 is connected to the second power input terminal of the terminal module 400, and the second power distribution output terminal is connected to the first power input terminal. If the initial voltage data is greater than or equal to zero, it indicates that the initial connection state is correct, and the current second connection state is maintained to continue power output, and the second connection state is determined as the target connection state. If the initial voltage data is less than zero, it indicates that the initial connection state is incorrect. At this time, the control module 100 adjusts the first connection state to the target connection state, that is, connects the first power distribution output terminal to the first power input terminal, and connects the second power distribution output terminal to the second power input terminal, and automatically corrects the wiring sequence error.

[0036] This application embodiment determines whether there is a wiring sequence error between the charging system modules based on the positive and negative states of the initial voltage data. If a wiring sequence error exists, the error can be corrected by adjusting the connection state between the power distribution module 300 and the terminal module 400. This not only greatly improves the error correction efficiency of the wiring sequence error, but also improves the reliability and safety of the charging system.

[0037] In some embodiments, please refer to Figure 2 , Figure 2 This is a connection diagram of a power distribution module provided in an embodiment of this application. Figure 2 As shown, the power distribution module 300 includes a switch 310, which includes a first fixed terminal, a second fixed terminal, a first floating terminal, a second floating terminal, a third floating terminal, and a fourth floating terminal. The first floating terminal is connected to the fourth floating terminal, and the second floating terminal is connected to the third floating terminal. The control module 100 is further configured to: in a first connection state, control the first fixed terminal to connect to the second floating terminal, the second fixed terminal to connect to the fourth floating terminal, the second floating terminal to connect as a first power distribution output terminal and a first power input terminal, and the fourth floating terminal to connect as a second power distribution output terminal and a second power input terminal. In a second connection state, control the first fixed terminal to connect to the first floating terminal, the second fixed terminal to connect to the third floating terminal, the fourth floating terminal to connect as a first power distribution output terminal and a first power input terminal, and the second floating terminal to connect as a second power distribution output terminal and a second power input terminal.

[0038] Please continue reading. Figure 2 The power distribution module 300 includes a switch 310, and the control module 100 (not shown) controls the connection of the power distribution module 300 by controlling the switch 310. The switch 310 includes two fixed connection terminals and four floating connection terminals. The two fixed connection terminals correspond to the positive and negative power inputs of the power distribution module 300, respectively. The four floating connection terminals are divided into two groups: the first and fourth floating terminals form one group, and the second and third floating terminals form another group. The power input terminals corresponding to the two groups of floating connection terminals are different. For example, if the first and fourth floating terminals correspond to the first power input terminal, then the second and third floating terminals correspond to the second power input terminal; if the first and fourth floating terminals correspond to the second power input terminal, then the second and third floating terminals correspond to the first power input terminal. It should be noted that a floating connection terminal corresponds to a certain power input terminal, indicating that the floating connection terminal is directly or indirectly connected to the power input terminal. Taking the first floating terminal and the fourth floating terminal corresponding to the first power input terminal as an example, the fourth floating terminal can be directly connected to the first power input terminal as the power distribution output terminal of the power distribution module 300, and the first floating terminal can be connected to the first power input terminal through the fourth floating terminal.

[0039] The fixed connection terminals corresponding to the two sets of floating connection terminals are also different. For example, if the first floating terminal and the fourth floating terminal correspond to the first fixed terminal, then the second floating terminal and the third floating terminal correspond to the second fixed terminal; conversely, if the first floating terminal and the fourth floating terminal correspond to the second fixed terminal, then the second floating terminal and the third floating terminal correspond to the second fixed terminal. It should be noted that when a floating connection terminal corresponds to a fixed connection terminal, it means that the floating connection terminal is directly or indirectly connected to the fixed connection terminal. Taking the first floating terminal and the fourth floating terminal corresponding to the first fixed terminal as an example, the first floating terminal can be directly connected to the first fixed terminal, and the fourth floating terminal can be connected to the first fixed terminal through the first floating terminal. It can be understood that one fixed connection terminal corresponds to one power output terminal of the power module 200.

[0040] In this embodiment, the second and fourth floating terminals are connected as power output terminals to the power input terminal. The first floating terminal can achieve power output by connecting to the fourth floating terminal, and the third floating terminal can achieve power output by connecting to the second floating terminal. The power distribution module 300 switches the connection state by controlling the fixed connection terminal to switch the connected floating connection terminal.

[0041] Please continue reading. Figure 2 The first fixed end of the fixed connection is designated as terminal A, and the second fixed end is designated as terminal B; the first floating end of the floating connection is designated as terminal 1, the second floating end as terminal 2, the third floating end as terminal 3, and the fourth floating end as terminal 4, wherein the first floating end terminal 1 is connected to the fourth floating end terminal 4, and the second floating end terminal 2 is connected to the third floating end terminal 3.

[0042] In the first connection state, the first fixed terminal A of the switch 310 is connected to the second floating terminal 2, and the second fixed terminal B is connected to the fourth floating terminal 4. At this time, the second floating terminal 2 is connected to the first power output terminal and the first power input terminal of the power distribution module 300, and the fourth floating terminal 4 is connected to the second power input terminal and the second power output terminal of the power distribution module 300.

[0043] In the second connection state, the first fixed terminal A of the switch 310 is connected to the first floating terminal 1, and the second fixed terminal B is connected to the third floating terminal 3. At this time, since the first floating terminal 1 is connected to the fourth floating terminal 4, the fourth floating terminal 4 serves as the first power distribution output terminal of the power distribution module 300 and is connected to the first power input terminal. Since the third floating terminal 3 is connected to the second floating terminal 2, the second floating terminal 2 serves as the second power distribution output terminal of the power distribution module 300 and is connected to the second power input terminal.

[0044] For example, taking terminal A as the positive power input and terminal B as the negative power input, in the initial connection state of the charging system, terminal A is connected to terminal 2, and terminal B is connected to terminal 4. Terminal 2 is connected to the first power input terminal as the positive power output terminal, and terminal 4 is connected to the second power input terminal as the negative power output terminal. That is, the first power output terminal (positive output terminal) of power module 200 is connected to the first power input terminal of terminal module 400 through terminal A and terminal 2, and the second power output terminal (negative output terminal) of power module 200 is connected to the second power input terminal of terminal module 400 through terminal B and terminal 4. If the initial voltage data of terminal module 400 is greater than or equal to zero, it indicates that the current wiring sequence is correct and no adjustment of the connection state is required. The current connection state can be maintained to continue the charging operation. If the voltage data is less than zero, it indicates that the current wiring sequence is incorrect and the connection status of the fixed connection terminal and the floating connection terminal needs to be adjusted. Specifically, terminal A can be switched to be connected to terminal 1, and terminal B can be switched to be connected to terminal 3. Since terminal 1 is connected to terminal 4 and terminal 3 is connected to terminal 2, it is equivalent to terminal 1 and terminal 4 both acting as positive power outputs, specifically connected to the second power input terminal through terminal 4. Terminal 3 and terminal 2 both acting as negative power outputs, specifically connected to the first power input terminal through terminal 2. After the switch, the first power output terminal (positive output terminal) of power module 200 is connected to the second power input terminal of terminal module 400, and the second power output terminal (negative output terminal) of power module 200 is connected to the first power input terminal of terminal module 400, thus adjusting the wiring sequence of terminal module 400 and power module 200.

[0045] In some implementations, the changeover switch 310 can be a double-pole double-throw (DPDT) switch or two single-pole double-throw (SPDT) switches. When the changeover switch 310 is two single-pole double-throw switches, the two switches are linked for control. It is understood that this application does not limit the type of changeover switch 310, as long as it enables synchronous switching of the connection terminals to correct wiring sequence errors.

[0046] In this embodiment of the application, by controlling the connection terminals of the switching switch 310, the power distribution output terminals connected to the power distribution module 300 and the terminal module 400 can be adjusted to adjust the power distribution output terminals in case of incorrect wiring sequence in the charging system. This achieves automatic correction of the wiring sequence, improves error correction efficiency, and further enhances the reliability and safety of the charging system.

[0047] In some embodiments, the control module 100 is further configured to send a switch switching command to the power distribution module 300 based on a wiring sequence error identifier, the switch switching command including the switch identifier of the switch 310 to be adjusted.

[0048] A wiring sequence error flag, such as E01, is used to indicate that there is a wiring sequence error in the charging system. The control module 100 determines whether there is a wiring sequence error in the charging system based on the initial voltage data; if so, it generates a wiring sequence error flag. For example, if the control module 100 detects that the initial voltage data is less than zero, it determines that there is a wiring sequence error in the current charging system and generates a wiring sequence error flag E01.

[0049] After the wiring sequence error identifier is generated, the control module 100 sends a switch switching command to the power distribution module 300 based on the error identifier, so that the power distribution module 300 controls the fixed connection terminal of the switching switch 310 to switch the floating connection terminal based on the switch switching command.

[0050] A switch identifier is used to uniquely identify the changeover switch 310 in the power distribution module 300, such as the serial number, serial number, or name of the changeover switch 310. The control module 100 sends a switch switching command with the switch identifier to the power distribution module 300, so that after receiving the switching command, the power distribution module 300 can determine the changeover switch 310 to be adjusted according to the switch identifier, and then cause the changeover switch 310 to switch the floating connection terminal connected to the fixed connection terminal.

[0051] In some implementations, after the power distribution module 300 receives the switch switching command, it can control the switch 310 to automatically switch the connection state within a preset time (e.g., 200 milliseconds) to improve the error correction efficiency for wiring sequence errors.

[0052] In this embodiment, the power distribution module 300 is controlled to perform a state switching operation based on the switch identifier of the switch to be adjusted 310. When the power distribution module 300 is connected to multiple power modules 200 or terminal modules 400, the switch to be controlled can be accurately determined according to the switch identifier, thereby improving the switching efficiency.

[0053] In some embodiments, please continue reading Figure 2 The power module 200 includes a first power output terminal and a second power output terminal. The first power output terminal is connected to a first fixed terminal or a second fixed terminal, and the second power output terminal is connected to a second fixed terminal or a first fixed terminal.

[0054] The power module 200 includes a first power output terminal and a second power output terminal. The power module 200 outputs electrical energy through both the first and second power output terminals, and the polarities of the first and second power output terminals are opposite. In this embodiment, the first power output terminal is connected to a first fixed terminal, and the second power output terminal is connected to a second fixed terminal. By connecting the two power output terminals of the power module 200 with opposite polarities to the two fixed connection terminals of the power distribution module 300, the power output by the power module 200 is transmitted to the power distribution module 300.

[0055] In some embodiments, please refer to Figure 3 , Figure 3 This is a schematic diagram of another charging system provided in an embodiment of this application. Figure 3 As shown, the control module 100 is also connected to the terminal module 400, and the control module 100 is also configured to acquire voltage data from the terminal module 400.

[0056] The control module 100 communicates with the terminal module 400 and can obtain the voltage data of the terminal module 400 based on the data communication with the terminal module 400. Then, based on the obtained voltage data, it can determine whether there is an error in the wiring sequence of the charging system.

[0057] In some implementations, the control module 100 can be connected to the CCU (Communication Control Unit) of the terminal module 400 via a CAN bus to obtain voltage data from the terminal module 400.

[0058] The control module 100 in this embodiment is directly connected to the terminal module 400, which can improve the efficiency and accuracy of acquiring voltage data from the terminal module 400, improve the correction effect of incorrect wiring sequence in the charging system, and further improve the reliability and safety of the charging system.

[0059] In some embodiments, please continue reading Figure 2 The terminal module 400 includes a first connection switch 410 and a second connection switch 420. The first connection switch 410 is connected to a first power input terminal, and the second connection switch 420 is connected to a second power input terminal. The control module 100 is further configured to close the first connection switch 410 and the second connection switch 420 when the output power of the power module 200 meets the charging requirements.

[0060] The first connection switch 410 and the second connection switch 420 are disposed in the terminal module 400 and are respectively connected to the power input terminal of the terminal module 400 and the output terminal of the power module 200. They are switches in the power module 200 used to control the power transmission path.

[0061] During system construction, connections are established between the power module 200 and the power distribution module 300, and between the power distribution module 300 and the terminal module 400. However, due to the presence of the first connection switch 410 and the second connection switch 420, the power transmission path between the power module 200 and the terminal module 400 is disconnected to avoid the incorrect transmission of output power and the resulting safety risks to the charging system.

[0062] In some embodiments, the control module 100 is also connected to the power module 200, and the control module 100 is further configured to control the power module 200 to perform a boost operation in response to a charging command.

[0063] When the terminal module 400 is connected to the terminal device and the control module 100 receives a charging command, the control module 100 responds to the charging command by controlling the power module 200 to perform a voltage boosting operation, so that the output power of the power module 200 can meet the charging requirements corresponding to the charging operation. For example, if the charging command requires the power module 200 to output a 300V voltage, the control module 100 controls the power module 200 to perform a voltage boosting operation, increasing the voltage of the power module 200 to 300V.

[0064] When the output power of the power module 200 after boosting meets the charging requirements, the control module 100 controls the first connection switch 410 and the second connection switch 420 to close. At this time, the power transmission path between the power module 200 and the terminal module 400 is connected, and the power module 200 can transmit power to the terminal device through the terminal module 400.

[0065] In this embodiment, a first connection switch 410 and a second connection switch 420 are provided in the terminal module 400. The power transmission path can be turned on only when the output power of the power module 200 meets the charging requirements. This not only reduces the impact of insufficient or excessive output power on the safety of the terminal device, but also improves the charging efficiency of the charging system.

[0066] In some embodiments, the control module 100 is further configured to: establish a terminal polarity mapping table, the terminal polarity mapping table including the theoretical polarity and actual polarity of the first power input terminal and the second power input terminal of the terminal module 400.

[0067] The terminal polarity mapping table corresponds to the polarity of the first power input terminal and the second power input terminal of the terminal module 400. The terminal module 400 receives electrical energy transmitted from the power module 200 through its power input terminals and outputs the received electrical energy to the terminal device. The theoretical polarity of the power input terminals in the terminal module 400 corresponds to the polarity of its output terminals. If, based on the initial voltage data of the terminal module 400, a wiring sequence error is detected in the initial connection state, the connection state of the charging system is switched, and the actual polarity of the power input terminals is updated in the terminal polarity mapping table. In some implementations, the terminal polarity mapping table includes not only the theoretical and actual polarities of the power input terminals but also the corresponding output terminal identifier and the module identifier of the terminal module 400, to facilitate the control module 100 in determining the target for connection state switching.

[0068] For example, still using Figure 2 Taking the example shown, assuming that the output terminal C of the power module 200 is theoretically the positive output terminal and the output terminal D is theoretically the negative output terminal, according to the terminal polarity mapping table, the theoretical polarity of the first power input terminal corresponding to output terminal C is positive, and the theoretical polarity of the second power input terminal corresponding to output terminal D is negative. Assuming the initial connection state, it can be understood that the initial connection state in the charging system is as follows: the first power output terminal (positive output terminal) of the power module 200 is connected to the first power input terminal of the terminal module 400 through terminals A and 2 of the power distribution module 300; the second power output terminal (negative output terminal) of the power module 200 is connected to the second power input terminal of the terminal module 400 through terminals B and 4 of the power distribution module 300. If the initial voltage data of the terminal module 400 is less than zero, it indicates that there is a wiring sequence error between the charging system modules. The control module 100 controls the power distribution module 300 to adjust the connection between the fixed connection terminal and the floating connection terminal. The first fixed terminal A of the power distribution module 300 is adjusted to be connected to terminal 1, so that the second power input terminal of the terminal module 400 can be connected through terminal 1 and terminal 4. The second fixed terminal B is adjusted to be connected to terminal 3, so that the first power input terminal of the terminal module 400 can be connected through terminal 3 and terminal 2. At this time, the polarities of the first power input terminal and the second power input terminal are reversed. The actual polarity corresponding to the power input terminal of the terminal module 400 is updated in the terminal polarity mapping table. The actual polarity of the first power input terminal is negative, and the actual polarity of the second power input terminal is positive.

[0069] It can be understood that the polarity of the output terminal C of the terminal module 400 corresponds to the polarity of the first power input terminal, and the polarity of the output terminal D corresponds to the polarity of the second power input terminal. The polarity relationship of the power input terminals in the terminal polarity mapping table can also represent the polarity relationship of the output terminals of the terminal module 400.

[0070] The charging system of this application embodiment includes a terminal polarity mapping table, and the terminal polarity mapping table is established based on the correction of wiring sequence errors in the charging system. The wiring operation of the subsequent terminal module 400 can be determined based on the terminal polarity mapping table, reducing the occurrence of wiring sequence errors and improving the reliability and safety of the charging system.

[0071] In some embodiments, the control module 100 and the power module 200 are disposed in the charging pile, which includes multiple power modules 200. In this case, the control module 100 is also the power control unit (PCU) of the charging pile.

[0072] Secondly, embodiments of this application also provide a control method for a charging system.

[0073] Please see Figure 4 , Figure 4 This is a flowchart illustrating a charging system control method provided in an embodiment of this application. The charging system to which this control method is applied includes a power module, a power distribution module, and a terminal module. The power module outputs power to the terminal module through the power distribution module. Figure 4 As shown, the control method of the charging system includes the following steps S400.

[0074] Step S400: Determine the target connection state between the power module, the power distribution module, and the terminal module based on the initial voltage data of the terminal module; wherein, the initial voltage data is the voltage data of the terminal module corresponding to the power module, the power distribution module, and the terminal module in the initial connection state.

[0075] This application embodiment determines whether there is a wiring sequence error in the charging system based on the voltage data of the terminal module. If a wiring sequence error exists, the connection status between the power module, the power distribution module, and the terminal module is adjusted to ensure that the power output terminal of the power module and the power input terminal of the terminal module correspond to the correct wiring sequence, thereby achieving automatic correction of the wiring sequence error.

[0076] The embodiments of this application can intelligently and automatically correct errors when there are wiring sequence errors in the charging system, which greatly improves the error correction efficiency of wiring sequence errors in the charging system, thereby improving the reliability and safety of the charging system.

[0077] The charging system control method of this application embodiment will be described in detail below through an example.

[0078] Please see Figure 5 , Figure 5This is a flowchart illustrating another charging system control method provided in an embodiment of this application. The charging system in this embodiment includes a power module, a power distribution module, and a terminal module, as described above in the embodiments concerning the charging system. Figure 5 As shown, the charging system control method of this application embodiment includes the following steps S510 to S560.

[0079] Step S510: Connect the power module, power distribution module and terminal module in sequence.

[0080] by Figure 2 Taking the example shown, the charging module is in its initial connection state. At this time, the first power output terminal of the power module is connected to the first fixed terminal A of the power distribution module, and the second power output terminal is connected to the second fixed terminal B. Within the power distribution module, the two fixed connection terminals are connected to the second floating terminal 2 and the fourth floating terminal 4 on the right side, i.e., the first fixed terminal A is connected to the second floating terminal 2, and the second fixed terminal B is connected to the fourth floating terminal 4. The second floating terminal 2 of the power distribution module is connected to the first power input terminal of the terminal module, and the fourth floating terminal 4 is connected to the second power input terminal. The second floating terminal 2 is also connected to the third floating terminal 3, and the fourth floating terminal 4 is also connected to the first floating terminal 1. The first power input terminal of the terminal module is connected to the first connection switch, and the second power input terminal is connected to the second connection switch. At this time, both the first and second connection switches are disconnected.

[0081] In step S520, in response to the charging command, the power module is controlled to perform a boost operation.

[0082] The control power module performs a boost operation to meet the charging requirements corresponding to the charging command. When the power module boosts the output power to meet the charging requirements, the first and second connection switches of the terminal module are closed so that the terminal module can output power to the terminal device through the power distribution module and the terminal module.

[0083] Step S530: Obtain the initial voltage data of the terminal module.

[0084] The system connects to the CCU of the terminal module via the CAN bus to obtain the initial voltage data currently output by the terminal module.

[0085] Step S540: Determine the wiring sequence based on the initial voltage data.

[0086] If the initial voltage data is greater than or equal to zero, it indicates that the wiring sequence of the charging system is correct, and there is no need to adjust the connection status between modules. The charging system maintains the initial connection status and transmits power to the terminal device.

[0087] If the initial voltage data is less than zero, it indicates that the wiring sequence of the charging system is incorrect, and step S550 is executed to adjust the connection status of the charging system.

[0088] Step S550: Generate a wiring sequence error identifier and send a switch switching command to the power distribution module; wherein, the switch switching command includes the switch identifier of the switch to be adjusted.

[0089] Step S560: Control the power distribution module to adjust the connection status of the switching switch so that the wiring sequence of the power output terminal of the power module and the power input terminal of the terminal module is consistent.

[0090] The switching switch in the control power distribution module adjusts the first fixed terminal A to connect with the first floating terminal 1, and adjusts the second fixed terminal B to connect with the third floating terminal 3. Since the first floating terminal 1 is connected to the fourth floating terminal 4, and the third floating terminal 3 is connected to the second floating terminal 2, this is equivalent to reversing the polarity of the two power distribution output terminals of the power distribution module, thus correcting the incorrect wiring sequence of the charging system.

[0091] It should be understood that for a detailed explanation of the specific working method and beneficial effects of the above-mentioned charging system control method, please refer to the embodiments of the above-mentioned charging system, which will not be elaborated here.

[0092] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0093] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0094] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0095] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A charging system, characterized in that, include: The system comprises a control module (100), a power module (200), a power distribution module (300), and a terminal module (400). The power module (200) outputs power to the terminal module (400) through the power distribution module (300). The control module (100) is connected to the power distribution module (300). The control module (100) is configured to: determine the target connection state between the power module (200), the power distribution module (300), and the terminal module (400) based on the initial voltage data of the terminal module (400), so that the wiring sequence of the power output terminal of the power module (200) and the power input terminal of the terminal module (400) is consistent; wherein, the initial voltage data is the voltage data of the terminal module (400) corresponding to the power module (200), the power distribution module (300), and the terminal module (400) in the initial connection state.

2. The system according to claim 1, characterized in that, The power distribution module (300) includes a first power distribution output terminal and a second power distribution output terminal, and the power input terminal of the terminal module (400) includes a first power input terminal and a second power input terminal; in a first connection state, the first power distribution output terminal is connected to the first power input terminal, and the second power distribution output terminal is connected to the second power input terminal; in a second connection state, the first power distribution output terminal is connected to the second power input terminal, and the second power distribution output terminal is connected to the first power input terminal; wherein, the initial connection state is either the first connection state or the second connection state; The control module (100) is further configured to: if the initial voltage data is greater than or equal to zero, determine the first connection state as the target connection state when the initial connection state is the first connection state; and if the initial voltage data is less than zero, determine the second connection state as the target connection state. If the initial connection state is the second connection state, and the initial voltage data is greater than or equal to zero, then the second connection state is determined as the target connection state; if the initial voltage data is less than zero, then the first connection state is determined as the target connection state.

3. The system according to claim 2, characterized in that, The power distribution module (300) includes a switch (310), which includes a first fixed terminal, a second fixed terminal, a first floating terminal, a second floating terminal, a third floating terminal, and a fourth floating terminal. The first floating terminal is connected to the fourth floating terminal, and the second floating terminal is connected to the third floating terminal. The control module (100) is further configured to: in the first connection state, control the first fixed end to connect with the second floating end, the second fixed end to connect with the fourth floating end, the second floating end to connect as the first power distribution output end to the first power input end, and the fourth floating end to connect as the second power distribution output end to the second power input end; In the second connection state, the first fixed end is connected to the first floating end, the second fixed end is connected to the third floating end, the fourth floating end is connected to the first power distribution output end as the first power input end, and the second floating end is connected to the second power distribution output end as the second power input end.

4. The system according to claim 3, characterized in that, The control module (100) is also configured to send a switch switching instruction to the power distribution module (300) based on a wiring sequence error identifier, the switch switching instruction including the switch identifier of the switch (310) to be adjusted.

5. The system according to claim 3, characterized in that, The power module (200) includes a first power output terminal and a second power output terminal. The first power output terminal is connected to the first fixed terminal or the second fixed terminal, and the second power output terminal is connected to the second fixed terminal or the first fixed terminal.

6. The system according to claim 2, characterized in that, The control module (100) is also connected to the terminal module (400), and the control module (100) is further configured to acquire voltage data of the terminal module (400).

7. The system according to claim 6, characterized in that, The terminal module (400) includes a first connection switch (410) and a second connection switch (420), wherein the first connection switch (410) is connected to the first power input terminal, and the second connection switch (420) is connected to the second power input terminal; wherein, The control module (100) is further configured to close the first connection switch (410) and the second connection switch (420) when the output power of the power module (200) meets the charging requirements.

8. The system according to claim 2, characterized in that, The control module (100) is further configured to: establish a terminal polarity mapping table, the terminal polarity mapping table including the theoretical polarity and actual polarity of the first power input terminal and the second power input terminal of the terminal module (400).

9. The system according to any one of claims 1 to 8, characterized in that, The control module (100) is also connected to the power module (200), and the control module (100) is further configured to control the power module (200) to perform a boost operation in response to a charging command.

10. A control method for a charging system, characterized in that, The charging system includes a power module, a power distribution module, and a terminal module. The power module outputs power to the terminal module through the power distribution module. The control method includes: Based on the initial voltage data of the terminal module, the target connection state between the power module, the power distribution module, and the terminal module is determined; wherein, the initial voltage data is the voltage data of the terminal module corresponding to the power module, the power distribution module, and the terminal module in the initial connection state.

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