Alternating current and direct current integrated charging seat, alternating current and direct current charging system and vehicle

Abstract

The embodiment of the utility model relates to an alternating-current and direct-current integrated charging seat, an alternating-current and direct-current charging system and a vehicle. The charging seat comprises a base shell, a direct-current charging port module, an alternating-current charging port module and a high-voltage connecting line module. The direct current charging port module and the alternating current charging port module are fixedly mounted on the base shell; the high-voltage connecting line module comprises a positive end connecting line and a negative end connecting line, the direct-current charging port module comprises a direct-current positive port and a direct-current negative port, and the alternating-current charging port module comprises a live line port and a zero line port; the direct-current positive port is connected with the live wire port through a positive end connecting line, and the direct-current negative port is connected with the zero line port through a negative end connecting line. According to the embodiment of the invention, high-voltage wires do not need to be separately arranged for the quick charging port and the slow charging port, so that the space occupied by arrangement of the high-voltage wire harness is reduced, and the cost consumed by the high-voltage wire harness is saved.

Description

Technical Field

[0001] This application relates to the field of electric vehicle technology, and more particularly to an AC / DC integrated charging socket, an AC / DC charging system, and a vehicle. Background Technology

[0002] Currently, electric vehicles can be fast-charged using dedicated charging equipment with high current or slow-charged using AC power and a charger to shorten charging time. Typically, fast charging is used when time is tight, and slow charging is used when time is not tight. For these reasons, existing electric vehicles often need to retain both fast and slow charging ports, and all vehicles need to be equipped with a charging dock that supports both fast and slow charging. To save costs, current electric vehicles generally use dual-function charging docks that integrate both fast and slow charging.

[0003] However, current dual-function charging docks that combine fast and slow charging typically only integrate the DC and AC output terminals onto a single dock, saving assembly space. Inside the vehicle, separate high-voltage lines are still required for the DC and AC output terminals. Separating the fast-charging and slow-charging high-voltage lines occupies significant space within the vehicle and increases wiring harness development costs. Utility Model Content

[0004] In view of this, in order to solve some or all of the above-mentioned technical problems, embodiments of this application provide an AC / DC integrated charging dock, an AC / DC charging system, and a vehicle.

[0005] In a first aspect, embodiments of this application provide an AC / DC integrated charging base, which includes: a base housing, a DC charging port module, an AC charging port module, and a high-voltage connection cable module; both the DC charging port module and the AC charging port module are fixedly mounted on the base housing; the high-voltage connection cable module includes a positive connection cable and a negative connection cable, the DC charging port module includes a DC positive port and a DC negative port, and the AC charging port module includes a live wire port and a neutral wire port; the DC positive port is connected to the live wire port through the positive connection cable, and the positive connection cable is fixed between the DC positive port and the live wire port; the DC negative port is connected to the neutral wire port through the negative connection cable, and the negative connection cable is fixed between the DC negative port and the neutral wire port.

[0006] In one possible implementation, the positive terminal connection line includes a positive terminal metal plate and a positive terminal connector, and the negative terminal connection line includes a negative terminal metal plate and a negative terminal connector; the positive terminal metal plate is connected to the DC positive port and the live wire port through the positive terminal connector; the negative terminal metal plate is connected to the DC negative port and the neutral wire port through the negative terminal connector.

[0007] In one possible implementation, the charging dock further includes a sliding cover plate, and the base housing is provided with a sliding limiting structure that cooperates with the sliding cover plate. The sliding cover plate slides on the base housing through the sliding limiting structure to cover the DC charging port module or the AC charging port module.

[0008] In one possible implementation, the limiting structure includes a tension spring, a slide rod, a baffle, and a snap-fit ​​module. The baffle is fixed to both sides of the base housing, the slide rod is fixed to the base housing, and the two ends of the tension spring are respectively fixed to the base housing and the sliding cover plate, with the axis of the tension spring coinciding with that of the slide rod. The sliding cover plate cooperates with the baffle and is slidably disposed on the base housing. The snap-fit ​​module is fixed to the base housing, and the sliding cover plate is provided with a locking structure that cooperates with the snap-fit ​​module. The snap-fit ​​module and the locking structure are used to limit the position of the sliding cover plate on the base housing.

[0009] In one possible implementation, the snap-fit ​​module includes a snap-fit ​​body, a roller, a compression spring, and a limiting rod; the roller is fixed to the base housing, and the snap-fit ​​body and the roller are rotatably connected; the limiting rod is fixed to the snap-fit ​​body, and the axes of the limiting rod and the compression spring coincide, with the two ends of the compression spring contacting the snap-fit ​​body and the base housing, respectively.

[0010] Secondly, embodiments of this application provide an AC / DC charging system, which includes: an AC / DC integrated charging base, a battery cell, and a battery pack controller as described in the first aspect above; the charging base includes a positive terminal connection wire and a negative terminal connection wire of a high-voltage connection wire module, which are respectively connected to the positive and negative terminals of the battery cell, and connected to the live wire input terminal and the neutral wire input terminal of the battery pack controller; the DC output positive terminal and the DC output negative terminal of the battery pack controller are respectively connected to the positive and negative terminals of the battery cell.

[0011] In one possible implementation, the system further includes a DC precharge relay, a DC main negative relay, a DC main positive relay, an AC main negative relay, and an AC main positive relay; one end of the DC precharge relay is connected to the positive terminal of the battery cell via a precharge resistor, and the other end is connected to the positive terminal connection line; the two ports of the DC main negative relay are respectively connected to the negative terminal connection line and the negative terminal of the battery cell; the two ports of the DC main positive relay are respectively connected to the positive terminal connection line and the positive terminal of the battery cell; the two ports of the AC main negative relay are respectively connected to the negative terminal connection line and the neutral wire input terminal of the battery pack controller; the two ports of the AC main positive relay are respectively connected to the positive terminal connection line and the live wire input terminal of the battery pack controller.

[0012] In one possible implementation, the battery pack controller includes an on-board charger, the input of which is connected to a live wire connection and a neutral wire connection, and the output of which is connected to the positive and negative terminals of the battery cells.

[0013] In one possible implementation, the battery pack controller includes a DC-DC converter for converting the input DC power to a voltage and outputting a DC power of a preset voltage.

[0014] Thirdly, embodiments of this application provide a vehicle that includes the AC / DC charging system described in the second aspect above.

[0015] The AC / DC integrated charging base, AC / DC charging system, and vehicle provided in this application embodiment include a base housing, a DC charging port module, an AC charging port module, and a high-voltage connection wire module within the AC / DC integrated charging base. The high-voltage connection wire module includes a positive terminal connection wire and a negative terminal connection wire. The DC charging port module includes a DC positive port and a DC negative port, and the AC charging port module includes a live wire port and a neutral wire port. The DC positive port is connected to the live wire port via the positive terminal connection wire, and the DC negative port is connected to the neutral wire port via the negative terminal connection wire. This application embodiment achieves the connection of the DC positive port for fast charging and the live wire port for slow charging together within the charging base via the positive terminal connection wire, and the connection of the DC negative port for fast charging and the neutral wire port for slow charging together via the negative terminal connection wire. The positive and negative terminal connection wires can be connected to the positive and negative terminals of the vehicle's high-voltage wires, thus eliminating the need for separate high-voltage wires for fast charging and slow charging ports, reducing the space occupied by high-voltage wiring harnesses, and saving the cost of high-voltage wiring harnesses. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of the structure of an AC / DC integrated charging dock provided in an embodiment of this application;

[0020] Figure 2 An exploded view of the AC / DC integrated charging dock provided in the embodiments of this application;

[0021] Figure 3This is a schematic diagram of another AC / DC integrated charging dock provided in an embodiment of this application;

[0022] Figure 4 An exploded view of another AC / DC integrated charging dock provided in an embodiment of this application;

[0023] Figure 5A A front view of the AC / DC integrated charging dock provided in an embodiment of this application;

[0024] Figure 5B for Figure 5A Sectional view of AA in the diagram;

[0025] Figure 5C for Figure 5A The local sectioning location of the sectional view of AA in the diagram;

[0026] Figure 6 This is a schematic diagram of the structure of the snap-fit ​​module provided in the embodiments of this application;

[0027] Figure 7 This is a schematic diagram of the electrical connections of an AC / DC charging system provided in an embodiment of this application;

[0028] Figure 8 This is a schematic diagram of the electrical connections of another AC / DC charging system provided in an embodiment of this application;

[0029] Figure 9A This is a schematic diagram showing the connection between a DC charging gun and an AC / DC charging system provided in an embodiment of this application.

[0030] Figure 9B A schematic diagram showing the connection between the AC charging gun and the AC / DC charging system provided in an embodiment of this application;

[0031] Figure 9C This is a schematic diagram showing the connection between the battery pack interior and the AC / DC integrated charging dock provided in an embodiment of this application;

[0032] Figure 10 This is a structural schematic diagram of a vehicle provided in an embodiment of this application. Detailed Implementation

[0033] Various exemplary embodiments of this application will now be described in detail 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. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0034] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of this application are only used to distinguish different steps, devices or modules, and do not represent any specific technical meaning, nor do they indicate the logical order between them.

[0035] It should also be understood that in this embodiment, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.

[0036] It should also be understood that any component, data or structure mentioned in the embodiments of this application can generally be understood as one or more unless explicitly defined or given contrary guidance in the context.

[0037] Furthermore, the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0038] It should also be understood that the description of the various embodiments in this application emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.

[0039] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0040] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. To facilitate understanding of the embodiments of this application, the application will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0043] To address the issue of large space requirements associated with connecting electric vehicle charging stations to high-voltage lines inside the vehicle in existing technologies, this application provides an AC / DC integrated charging station that connects both fast and slow charging electrode ports together inside the charging station. This eliminates the need for separate high-voltage lines for fast and slow charging ports, saving vehicle space and cost.

[0044] Figure 1 This is a schematic diagram of an AC / DC integrated charging dock 100 provided in an embodiment of this application. The charging dock 100 can be used in electric vehicles or other devices requiring charging.

[0045] like Figure 1 As shown, the charging dock 100 specifically includes: a base housing 101, a DC charging port module 102, an AC charging port module 103, and a high-voltage connection cable module 104. When charging the vehicle battery is required, a DC charging gun can be connected to the DC charging port module 102, or an AC charging gun can be connected to the AC charging port module 103. Typically, a larger current can be input to the DC charging port module 102 for fast charging, while a smaller current can be input to the AC charging port module 103 for slow charging.

[0046] Both the DC charging port module 102 and the AC charging port module 103 are fixedly mounted on the base housing 101. Figure 1 The diagram shows the charging dock installed on one side of the vehicle.

[0047] like Figure 1 As shown, the high-voltage connection module 104 includes a positive terminal connection line 1041 and a negative terminal connection line 1042, the DC charging port module 102 includes a DC positive port 1021 and a DC negative port 1022, and the AC charging port module 103 includes a live wire port 1031 and a neutral wire port 1032.

[0048] The DC positive port 1021 is connected to the live wire port 1031 via the positive terminal connection line 1041, and the positive terminal connection line 1041 is fixed between the DC positive port 1021 and the live wire port 1031; the DC negative port 1022 is connected to the neutral wire port 1032 via the negative terminal connection line 1042, and the negative terminal connection line 1042 is fixed between the DC negative port 1022 and the neutral wire port 1032.

[0049] Typically, the high-voltage wire inside the vehicle can be connected to the positive terminal connection wire 1041 of the aforementioned high-voltage connection wire module 104, and the ground wire inside the vehicle can be connected to the negative terminal connection wire 1042 of the aforementioned high-voltage connection wire module 104. When using the DC charging port module 102 for fast charging, the input current can flow into the battery cell inside the vehicle through the high-voltage wire; when using the AC charging port module 103 for slow charging, the input AC power can flow into the charger inside the vehicle through the high-voltage wire, and then the charger outputs DC power to the battery cell.

[0050] The AC / DC integrated charging dock provided in this application embodiment includes a base housing, a DC charging port module, an AC charging port module, and a high-voltage connection wire module. The high-voltage connection wire module includes a positive connection wire and a negative connection wire. The DC charging port module includes a DC positive port and a DC negative port. The AC charging port module includes a live wire port and a neutral wire port. The DC positive port is connected to the live wire port via the positive connection wire, and the DC negative port is connected to the neutral wire port via the negative connection wire. This application embodiment achieves the connection of the DC positive port for fast charging and the live wire port for slow charging together within the charging dock via the positive connection wire, and the connection of the DC negative port for fast charging and the neutral wire port for slow charging together via the negative connection wire. The positive and negative connection wires can be connected to the positive and negative terminals of the vehicle's high-voltage wires, thus eliminating the need for separate high-voltage wires for fast charging and slow charging ports, reducing the space occupied by high-voltage wiring harnesses, and saving the cost of high-voltage wiring harnesses.

[0051] In some optional implementations of this embodiment, such as Figure 1 As shown, the positive terminal connecting line 1041 includes a positive terminal metal piece 10411 and a positive terminal connector 10412, and the negative terminal connecting line 1042 includes a negative terminal metal piece 10421 and a negative terminal connector 10422.

[0052] The positive terminal metal piece 10411 is connected to the DC positive port 1021 and the live wire port 1031 via the positive terminal connector 10412. The negative terminal metal piece 10421 is connected to the DC negative port 1022 and the neutral wire port 1032 via the negative terminal connector 10422.

[0053] The aforementioned positive end metal piece 10411 and negative end metal piece 10421 are typically copper pieces, and the positive end connector 10412 and negative end connector 10422 are typically connecting bolts. By using bolts, the DC positive port 1021 and the live wire port 1031 can be connected together, and the DC positive port 1021 and the live wire port 1031 can be connected together with the high-voltage wire in the vehicle; and the DC negative port 1022 and the neutral wire port 1032 can be connected together, and the DC negative port 1022 and the neutral wire port 1032 can be connected together with the ground wire in the vehicle.

[0054] like Figure 2 The figure shows an exploded view of the AC / DC integrated charging dock. As can be seen from the figure, the cylindrical DC positive port 1021 and the live wire port 1031 are connected together by a positive end metal piece 10411 and secured with bolts; the cylindrical DC negative port 1022 and the neutral wire port 1032 are connected together by a positive end metal piece 10411 and secured with bolts. Optionally, Figure 2 The AC charging port module 103 shown also includes a low-voltage line port module 105.

[0055] This embodiment uses a positive terminal metal plate and a positive terminal connector to form a positive terminal connection line, and a negative terminal metal plate and a negative terminal connector to form a negative terminal connection line. This facilitates more flexible connection and disconnection of the charging port, and makes it easier to connect the fast charging and slow charging ports to the vehicle's high-voltage lines, thus improving the installation and configuration efficiency of the charging dock.

[0056] In some optional implementations of this embodiment, such as Figure 3 As shown, the charging dock 100 also includes a sliding cover plate 106. The base housing 101 is provided with a sliding limiting structure 107 that cooperates with the sliding cover plate 106. The sliding cover plate 106 slides on the base housing 101 through the sliding limiting structure 107 to cover the DC charging port module 102 or the AC charging port module 103.

[0057] Optionally, the aforementioned sliding limiting structure 107 can be implemented by a structure such as a guide rail or a slide rod, and the sliding cover plate 106 is provided with a structure that matches the sliding limiting structure 107, such as a limiting hole or a limiting groove.

[0058] like Figure 3 The diagram shows the structure of the charging dock installed on the outside of the vehicle (i.e., connected to the charging gun). Figure 3 It can be seen that the sliding cover 106 slides on the base housing 101. When it is necessary to use the DC charging port for charging, the sliding cover 106 can slide to the AC charging port side; when it is necessary to use the AC charging port for charging, the sliding cover 106 can slide to the DC charging port side.

[0059] This embodiment, by setting a sliding cover on the charging dock, ensures that only DC charging guns or AC charging guns can be connected during charging. Unused charging ports are covered, thereby preventing users from accidentally connecting different types of charging guns to the charging dock at the same time, preventing the risk of unused charging ports being accidentally touched, and also serving as a dustproof and waterproof function.

[0060] In some optional implementations of this embodiment, such as Figure 3As shown, the limiting structure 107 includes a tension spring 1071, a slide rod 1072, a baffle 1073, and a buckle module 1074. The baffle 1073 is fixed on both sides of the base housing 101, the slide rod 1072 is fixed on the base housing 101, and the two ends of the tension spring 1071 are respectively fixed on the base housing 101 and the sliding cover plate 106, and the axis of the tension spring 1071 coincides with that of the slide rod 1072.

[0061] The sliding cover 106 cooperates with the baffle 1073 and can be slidably mounted on the base housing 101.

[0062] like Figure 4 The diagram shows an exploded view of a charging dock including a sliding cover 106 and a limiting structure 107. The baffle 1073 is bolted to the base housing 101. Figure 5A As shown, it displays a front view of the AC / DC integrated charging dock of this embodiment, as follows. Figure 5B As shown, it illustrates Figure 5A The sectional view of AA in the diagram. (Example) Figure 5C As shown, it illustrates Figure 5A The partial sectioning position of the AA cross-section in the figure shows that the baffle 1073 cooperates with the sliding cover 106 to restrict the movement direction of the sliding cover 106.

[0063] The snap-fit ​​module 1074 is fixed on the base housing 101, and the sliding cover plate 106 is provided with a locking structure that cooperates with the snap-fit ​​module 1074. The snap-fit ​​module 1074 and the locking structure are used to limit the position of the sliding cover plate 106 on the base housing 101.

[0064] like Figure 4 As shown, the tension spring 1071 can generate a certain tension on the sliding cover 106. When the tension spring 1071 is not applying tension, the sliding cover 106 is located above the AC charging module. When the sliding cover 106 moves above the DC charging module, it can be fixed by the snap-fit ​​module 1074. When it is necessary to move the sliding cover 106 above the AC charging module, the snap-fit ​​module 1074 can be pressed, and under the action of the tension spring 1071, the sliding cover 106 will be pulled back above the AC charging module.

[0065] This embodiment achieves stable restriction of the sliding module above the DC charging module or AC charging module by setting up a tension spring 1071, a slide bar 1072, a baffle 1073 and a buckle module 1074, thus preventing the sliding cover 106 from moving on its own on the charging base and causing damage and safety risks.

[0066] In some optional implementations of this embodiment, such as Figure 6As shown, the buckle module 1074 includes a buckle body 10741, a roller 10742, a compression spring 10743, and a limiting rod 10744.

[0067] The roller 10742 is fixed on the base housing 101, and the buckle body 10741 is rotatably connected to the roller 10742.

[0068] The limiting rod 10744 is fixed on the buckle body 10741, and the axes of the limiting rod 10744 and the compression spring 10743 coincide. The two ends of the compression spring 10743 are in contact with the buckle body 10741 and the base housing 101, respectively.

[0069] When the sliding cover 106 moves to the side of the latch module 1074, the first end A of the latch body 10741 can engage with the sliding cover 106 (for example, the first end is inserted into the limiting hole on the sliding cover 106), and the position of the sliding cover 106 is fixed under the action of the compression spring 10743. When the user pulls the second end B of the latch body 10741, the latch body 10741 rotates along the roller 10742, the sliding cover 106 disengages from its original position, and automatically slides back to its initial position.

[0070] The snap-fit ​​module provided in this embodiment allows the sliding cover to be moved or fixed under the user's operation, improving the convenience of charging with the charging dock.

[0071] Figure 7 This is a schematic diagram of the electrical connections of another AC / DC charging system 700 provided in an embodiment of this application. (See attached diagram.) Figure 7 As shown, the AC / DC charging system 700 specifically includes: the AC / DC integrated charging dock 100, the battery cell 701, and the battery pack controller 702 described in any of the above embodiments.

[0072] The battery cell 701 is contained within the battery pack and consists of components such as a positive electrode, a negative electrode, a separator, and an electrolyte. The battery pack controller 702 is used to control the charging process, including functions such as setting the charging power, monitoring battery status, and fault diagnosis. The battery pack controller 702 typically consists of various electronic components mounted on a circuit board.

[0073] like Figure 7 As shown, the positive terminal connection line 1041 and the negative terminal connection line 1042 of the high voltage connection line module 104 included in the charging dock are connected to the positive and negative terminals of the battery cell 701, respectively, and are connected to the live wire input terminal and the neutral wire input terminal of the battery pack controller 702. The DC output positive terminal and the DC output negative terminal of the battery pack controller 702 are connected to the positive and negative terminals of the battery cell 701, respectively.

[0074] Figure 7In this context, DC+ and DC- represent the DC high-voltage positive and negative terminals of the battery pack in the vehicle, respectively, while L and N represent the AC live and neutral terminals connected to the battery pack controller 702, respectively.

[0075] In this embodiment, the battery pack controller 702 can receive input AC power from the AC charging module, convert the AC power into DC power, and input the DC power into the battery cell 701 to charge the battery.

[0076] The AC / DC charging system provided in this embodiment uses the aforementioned AC / DC integrated charging socket and connects it to the cell and battery pack controller. This allows the positive and negative terminals of the vehicle's high-voltage wires to be simultaneously connected to both the DC charging module and the AC charging module within the vehicle. During charging, the battery pack controller controls the type of charging gun and the charging process, eliminating the need for separate high-voltage wires for fast charging and slow charging ports. This reduces the space occupied by high-voltage wiring harnesses inside the vehicle and saves on the overall cost of the vehicle.

[0077] In some optional implementations of this embodiment, such as Figure 7 As shown, the system also includes a DC precharge relay K1, a DC main negative relay K2, a DC main positive relay K3, an AC main negative relay K4, and an AC main positive relay K5.

[0078] One end of the DC precharge relay is connected to the positive terminal of cell 701 via a precharge resistor, and the other end is connected to the positive terminal connection line 1041. The DC precharge relay is used to precharge the battery by controlling the relay to close before using DC charging. Figure 7 The resistor Rb in the figure is the pre-charge resistor.

[0079] The two ports of the DC main negative relay are connected to the negative terminal connection line 1042 and the negative terminal of the battery cell 701, respectively; the two ports of the DC main positive relay are connected to the positive terminal connection line 1041 and the positive terminal of the battery cell 701, respectively.

[0080] The DC main negative relay and the DC main positive relay are used to close or open under the control of the battery pack controller 702 to control the DC charging process of the battery.

[0081] The two ports of the AC main negative relay are connected to the negative terminal connection line 1042 and the neutral terminal of the battery pack controller 702, respectively; the two ports of the AC main positive relay are connected to the positive terminal connection line 1041 and the live terminal of the battery pack controller 702, respectively.

[0082] The AC main negative relay and the AC main positive relay are used to close or open under the control of the battery pack controller 702 to control the AC charging process of the battery.

[0083] This embodiment connects the DC precharge relay, DC main negative relay, DC main positive relay, AC main negative relay, and AC main positive relay to the high-voltage connection module of the aforementioned AC / DC integrated charging socket. This helps to make full use of the wiring space saved by the AC / DC integrated charging socket and reduces the difficulty of arranging the relay lines.

[0084] In some optional implementations of this embodiment, such as Figure 8 As shown, the battery pack controller 702 includes an on-board charger 7021 (OBC). The input terminal of the on-board charger 7021 is connected to the live wire connection terminal and the neutral wire connection terminal, and the output terminal of the on-board charger is connected to the positive and negative terminals of the battery cell 701.

[0085] The on-board charger can receive AC power from the AC charging module, convert it to DC power, and then input it to the battery cell 701 for charging. The on-board charger can be controlled by the battery pack controller 702.

[0086] This embodiment integrates more functions into the battery pack controller by setting an on-board charger on the battery pack controller, eliminating the need to set up a separate on-board charger in the vehicle, and further improving the utilization rate of the vehicle's interior space.

[0087] In some optional implementations of this embodiment, such as Figure 8 As shown, the battery pack controller includes a DC-DC converter 7022, which is used to convert the input DC power into voltage and output DC power with a preset voltage.

[0088] The number of the aforementioned DC-DC converters can be at least one, used to convert the input DC voltage to obtain DC current with at least one voltage value.

[0089] In this embodiment, the DC-DC converter is placed on the battery pack controller, which allows the battery pack controller 702 to integrate more functions, reduces the space occupied by the DC-DC converter in the vehicle interior, and further improves the utilization rate of the vehicle interior space.

[0090] like Figure 9A As shown, it illustrates a connection diagram between the DC charging gun and the system provided in this embodiment. Figure 9B As shown, it illustrates a connection diagram between the AC charging gun and the system provided in this embodiment. Figure 9C The diagram shows the connection between the battery pack interior and the aforementioned AC / DC integrated charging dock. Wherein, Figure 9A In this configuration, the DC charging gun 901 includes a DC charging gun controller 9011, an AC / DC integrated charging socket connected to each port of the DC charging gun, and connected to the battery pack 902. The battery pack contains the aforementioned battery cell 701 and battery pack controller 702. Figure 9B In the middle, the AC charging gun 903 includes an AC charging gun controller 9031, an AC / DC integrated charging socket connected to each port of the AC charging gun, and connected to the battery pack 902.

[0091] Typically, the charging process using a DC charging gun is as follows:

[0092] Step 1: Press and hold the charging gun head to remove the DC charging gun, but do not insert it into the aforementioned AC / DC integrated charging socket. At this time, switch S1 is off, and the voltage at detection point 1 inside the charging gun is 12V (U1 is 12V). Figure 9C The voltage at detection point 2 in the battery pack is 0V.

[0093] Step 2: Insert the DC charging gun into the charging socket and press the gun head. At this time, switch S1 is off, and the CC1 circuit forms a loop through resistor R4 and PE (PE is connected to the vehicle's ground wire). Resistor R3 and... Figure 9C R5 is connected in series and forms a circuit with PE. The voltage at detection point 1 inside the charging gun is 6V, and the voltage at detection point 2 inside the battery pack is 6V.

[0094] Step 3: Insert the DC charging gun into the charging socket and release the gun head. At this time, switch S1 is closed. The CC1 circuit consists of resistor R2, Figure 9C Resistor R4 in the CC2 circuit is connected in parallel, then in series with R1 to form a circuit with PE. Resistors R3 and R5 in the CC2 circuit are connected in series to form a circuit with PE. The voltage at detection point 1 inside the charging gun is 4V, and the voltage at detection point 2 inside the battery pack is 6V. The DC charging gun controller and the battery pack controller 702 confirm that the interface is connected via the CAN bus, and the electronic lock is engaged.

[0095] Step 4: The battery pack controller 702 receives the CAN line signal indicating a complete interface connection and electronic lock, determines that DC charging is in progress, and outputs a control signal to close the DC pre-charge relay and the DC main negative relay, initiating vehicle charging. Once the current stabilizes, it controls the DC pre-charge relay to open and the DC main positive relay to close, commencing fast charging.

[0096] Step 5: End DC charging, unplug the DC charging gun, slide the sliding cover 106 of the AC / DC integrated charging base to the DC charging port, and fix the front cover of the charging base with the spring clip to prevent it from resetting, thus exposing the AC charging port.

[0097] The process of charging using an AC charging gun is as follows:

[0098] Step 1: Press and hold the charging gun head to remove the AC charging gun. Do not insert it into the charging socket. Figure 9C The current at detection point 4 in the battery pack is 0A, and switch S4 is closed.

[0099] Step 2: Insert the AC charging gun into the charging dock and press down on the gun head. Figure 9B When switch S3 is open, the current at detection point 4 in the battery pack is 12V / (Rc+R7), and switch S4 is closed. Figure 9C The voltage at detection point 5 is 12V.

[0100] Step 3: Insert the AC charging gun into the charging dock and release the gun head. At this time, switch S3 is closed, and the current at detection point 4 is 12V / Rc. The AC charging gun and the charging dock power supply interface are fully connected, the electronic lock is engaged, switch S2 switches to PWM connection mode, and switch S4 is open. The AC charging gun controller sends a PWM signal, and the AC charging gun controller determines whether the connection is complete by measuring the PWM signal at detection point 3. The battery pack controller 702 determines whether the connection is complete by measuring the PWM signal at detection point 5.

[0101] Step 4: After the connection is complete, the battery pack controller 702 determines that it is AC charging through the CP signal, outputs a control signal, controls the slow charging main positive relay and the slow charging main negative relay to close, and the whole vehicle starts charging.

[0102] Figure 10 This is a schematic diagram of the structure of a vehicle 1000 provided in an embodiment of this application. The vehicle 1000 includes the AC / DC charging system 700 described above.

[0103] The vehicle provided in this embodiment, by applying the above-mentioned AC / DC charging system, enables the simultaneous connection of the positive and negative terminals of the vehicle's high-voltage wires to both the DC charging module and the AC charging module within the vehicle. During charging, the battery pack controller controls the type of charging gun and the charging process, thus eliminating the need to separately install high-voltage wires for the fast charging port and the slow charging port. This reduces the space occupied by the high-voltage wiring harness inside the vehicle and saves on the overall cost of the vehicle.

[0104] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0105] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0106] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0107] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An AC / DC integrated charging station, characterized in that, The charging base comprises a base shell, a direct current charging port module, an alternating current charging port module and a high voltage connection line module; the direct current charging port module and the alternating current charging port module are fixedly installed on the base shell; The high voltage connection line module comprises a positive end connection line and a negative end connection line, the direct current charging port module comprises a direct current positive port and a direct current negative port, and the alternating current charging port module comprises a live line port and a zero line port; The direct current positive port is connected with the live line port through the positive end connection line, and the positive end connection line is fixed between the direct current positive port and the live line port; the direct current negative port is connected with the zero line port through the negative end connection line, and the negative end connection line is fixed between the direct current negative port and the zero line port.

2. The charging stand of claim 1, wherein, The positive end connection line comprises a positive end metal sheet and a positive end connector, and the negative end connection line comprises a negative end metal sheet and a negative end connector; The positive end metal sheet is connected with the direct current positive port and the live line port through the positive end connector; The negative end metal sheet is connected with the direct current negative port and the zero line port through the negative end connector.

3. The charging stand of claim 1, wherein, The charging base further comprises a sliding cover plate, the base shell is provided with a sliding limiting structure matched with the sliding cover plate, and the sliding cover plate slides on the base shell through the sliding limiting structure to cover the direct current charging port module or the alternating current charging port module.

4. The charging station of claim 3, wherein, The limiting structure comprises a tension spring, a sliding rod, a baffle and a buckle module, the baffle is fixed on both sides of the base shell, the sliding rod is fixed on the base shell, the two ends of the tension spring are fixed on the base shell and the sliding cover plate respectively, and the axis of the tension spring coincides with that of the sliding rod; The sliding cover plate is matched with the baffle and is slidably arranged on the base shell; The buckle module is fixed on the base shell, the sliding cover plate is provided with a locking structure matched with the buckle module, and the buckle module and the locking structure are used to limit the position of the sliding cover plate on the base shell.

5. The charging station of claim 4, wherein, The buckle module comprises a buckle body, a roller, a compression spring and a limiting rod; The roller is fixed on the base shell, and the buckle body is rotatably connected with the roller; The limiting rod is fixed on the buckle body, and the axis of the limiting rod coincides with that of the compression spring, and the two ends of the compression spring are in contact with the buckle body and the base shell respectively.

6. An AC / DC charging system, characterized by, The system comprises the alternating current and direct current integrated charging base, a battery cell and a battery pack controller according to any one of claims 1-4; The positive end connection line and the negative end connection line of the high voltage connection line module of the charging base are connected to the positive electrode and the negative electrode of the battery cell respectively and connected to the live line access end and the zero line access end of the battery pack controller, and the direct current output positive end and the direct current output negative end of the battery pack controller are connected with the positive electrode and the negative electrode of the battery cell respectively.

7. The system of claim 6, wherein, The system further comprises a direct current pre-charging relay, a direct current main negative relay, a direct current main positive relay, an alternating current main negative relay and an alternating current main positive relay. One end of the direct current pre-charge relay is connected to the positive pole of the battery cell through a pre-charge resistor, and the other end is connected to the positive terminal connecting wire; Two ports of the direct current main negative relay are respectively connected to the negative terminal connecting wire and the negative pole of the battery cell; Two ports of the direct current main positive relay are respectively connected to the positive terminal connecting wire and the positive pole of the battery cell; Two ports of the alternating current main negative relay are respectively connected to the negative terminal connecting wire and the zero line access end of the battery pack controller; Two ports of the alternating current main positive relay are respectively connected to the positive terminal connecting wire and the fire line access end of the battery pack controller.

8. The system of claim 6, wherein, The battery pack controller comprises an on-board charger, an input end of the on-board charger is connected to the fire line access end and the zero line access end, and an output end of the on-board charger is connected to the positive pole and the negative pole of the battery cell.

9. The system of claim 6, wherein, The battery pack controller comprises a direct current converter, the direct current converter is used for voltage conversion on input direct current, and output direct current with preset voltage.

10. A vehicle characterized by comprising: The AC / DC charging system comprises the battery pack controller according to any one of claims 5-9.

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