Battery replacement system

Abstract

The embodiment of the utility model discloses a battery changing system, which comprises a first high-voltage box, the first high-voltage box is provided with at least one interface group and a plurality of terminal groups, the interface group comprises a first interface and a second interface, and the terminal group comprises a first terminal and a second terminal; one end of the first interface and one end of the second interface are electrically connected with the anode and the cathode of the battery box respectively; one end of each first terminal in the at least two terminal groups is electrically connected with the other end of the first interface in the interface group, and one end of each second terminal in the at least two terminal groups is electrically connected with the other end of the second interface in the interface group; and the other end of the first terminal and the other end of the second terminal are electrically connected with the power conversion connectors, so that power can be transmitted to a whole vehicle end by adopting a plurality of power conversion connectors, stable and reliable connection and disconnection in a power conversion process are ensured, efficient and stable transmission of electric energy is realized, and the overall performance and efficiency of power conversion are improved.

Description

Technical Field

[0001] This application relates to the field of battery swapping technology, and more particularly to a battery swapping system. Background Technology

[0002] In electric vehicle battery swapping systems, the high-voltage swapping box, as a high-voltage power distribution device in the battery swapping station, distributes the high-voltage DC power from the battery pack to the high-voltage electrical components of the vehicle. In the power system, the high-voltage swapping box is not only responsible for the distribution and conversion of electrical energy, but also requires various safety measures to ensure the stable operation of the battery swapping system. Therefore, improving the reliability of the high-voltage swapping box is currently a key research focus. Utility Model Content

[0003] This application provides a battery swapping system that can transmit power to the vehicle using multiple battery swapping connectors, ensuring stable and reliable connection and disconnection during the battery swapping process, thereby achieving efficient and stable power transmission and improving the overall performance and efficiency of battery swapping.

[0004] To address the aforementioned problems, this application provides a battery swapping system, comprising:

[0005] The first high-voltage box is provided with at least one interface group and multiple terminal groups. The interface group includes a first interface and a second interface, and the terminal group includes a first terminal and a second terminal.

[0006] One end of the first interface and one end of the second interface are electrically connected to the positive and negative terminals of the battery box, respectively.

[0007] One end of the first terminal in at least two terminal groups is electrically connected to the other end of the first interface in the interface group, and one end of the second terminal in at least two terminal groups is electrically connected to the other end of the second interface in the interface group.

[0008] The other end of the first terminal and the other end of the second terminal are both electrically connected to the battery swapping connector.

[0009] Furthermore, in the battery swapping system provided in this application, the first high-voltage box is provided with multiple interface groups;

[0010] The other ends of the first terminals in each interface group are electrically connected, and the other ends of the second terminals in each interface group are electrically connected.

[0011] Furthermore, in the battery swapping system provided in this application, the first high-voltage box is also equipped with multiple Hall sensors;

[0012] The number of Hall sensors is equal to the number of interface groups. One end of the Hall sensor is electrically connected to the other end of the second interface, and the other end of the Hall sensor is electrically connected to one end of the second terminal.

[0013] Furthermore, in the battery swapping system provided in this application, the first high-voltage box is also equipped with multiple first relays;

[0014] The number of first relays is equal to the number of terminal groups; one end of the first relay is electrically connected to the other end of the first interface, and the other end of the first relay is electrically connected to one end of the first terminal; or / and,

[0015] The first high-voltage box is also equipped with multiple second relays;

[0016] The number of second relays is equal to the number of terminal groups. One end of the second relay is electrically connected to the other end of the second interface, and the other end of the second relay is electrically connected to one end of the second terminal; or / and,

[0017] The first high-voltage box is also equipped with at least one main control board and a first communication interface;

[0018] One end of the first communication interface is electrically connected to the battery box, and the other end of the first communication interface is electrically connected to the main control board and the battery swapping connector, with the main control board electrically connected to the battery swapping connector.

[0019] Furthermore, in the battery swapping system provided in this application, the first high-voltage box is also equipped with a communication module, which is electrically connected to the main control board; or / and,

[0020] The first high-voltage box is also equipped with a first debugging interface, which is electrically connected to the main control board.

[0021] Furthermore, in the battery swapping system provided in this application, the battery swapping system also includes a second high-voltage box;

[0022] The second high-voltage box is located at the vehicle end and is electrically connected to the battery swapping connector.

[0023] Furthermore, in the battery swapping system provided in this application, the second high-voltage box is provided with at least one port group and at least one charging / discharging socket group;

[0024] The port group includes a first port and a second port, and the charging and discharging socket group includes a first charging and discharging socket and a second charging and discharging socket.

[0025] One end of the first port and one end of the second port are electrically connected to the battery swapping connector, the other end of the first port is electrically connected to the first charging / discharging port, and the other end of the second port is electrically connected to the second charging / discharging port.

[0026] Furthermore, in the battery swapping system provided in this application, the second high-voltage box is provided with multiple port groups and multiple charging and discharging socket groups;

[0027] The number of port groups is equal to the number of battery swapping connectors. The other end of the first port in at least two port groups is electrically connected to the first charging / discharging port in a charging / discharging port group, and the other end of the second port in at least two port groups is electrically connected to the second charging / discharging port in a charging / discharging port group.

[0028] Furthermore, in the battery swapping system provided in this application, the first charging and discharging port includes a first charging port and a first discharging port, and the second high-voltage box is provided with at least one third relay;

[0029] Wherein, one end of the third relay is electrically connected to the other end of each of the first ports and the first discharge port, and the other end of the third relay is electrically connected to the first charging port; or / and,

[0030] The second high-voltage box is also equipped with at least one first fuse;

[0031] The number of first fuses is equal to the number of charging / discharging socket groups; one end of each first fuse is electrically connected to the other end of each first port, and the other end of each first fuse is electrically connected to the first charging / discharging socket; or / and,

[0032] The second high-voltage box is also equipped with at least one maintenance switch;

[0033] The number of maintenance switches is equal to the number of charging / discharging port groups; one end of each maintenance switch is electrically connected to the other end of each first port, and the other end of each maintenance switch is electrically connected to the first charging / discharging port; or / and,

[0034] The second charging and discharging port includes a second charging port and a second discharging port. The second high-voltage box is also equipped with a fourth relay and at least one fifth relay.

[0035] Wherein, one end of the fourth relay and the other end of the fourth relay are both electrically connected to the other end of the second port, the other end of the fourth relay is electrically connected to the second discharge port, and the other end of the fifth relay is electrically connected to the second charging port; or / and,

[0036] The second high-voltage box is also equipped with a second debugging interface, a second communication interface, and a high-voltage bus. Both the second debugging interface and the second communication interface are electrically connected to the high-voltage bus; or / and,

[0037] The second high-pressure box is also equipped with a first thermal management interface and a second thermal management interface;

[0038] The first thermal management interface is electrically connected to the other end of each first port, and the second thermal management interface is electrically connected to the other end of each second port.

[0039] Furthermore, in the battery swapping system provided in this application, the second high-voltage box is also equipped with a pre-charge switch and a pre-charge resistor;

[0040] Wherein, one end of the precharge switch is electrically connected to the other end of each of the second ports, the other end of the precharge switch is electrically connected to one end of the precharge resistor, and the other end of the precharge resistor is electrically connected to the second discharge port; or / and,

[0041] The second high-voltage box is also equipped with a second fuse;

[0042] Wherein, one end of the second fuse is electrically connected to the other end of each of the first ports, and the other end of the second fuse is electrically connected to the first thermal management interface; or / and,

[0043] The second high-voltage box is also equipped with a sixth relay;

[0044] Among them, one end of the sixth relay is connected to the other end of each of the first ports, and the other end of the sixth relay is electrically connected to the first thermal management interface.

[0045] The battery swapping system provided in this application includes a first high-voltage box, which is provided with at least one interface group and multiple terminal groups. The interface group includes a first interface and a second interface, and the terminal groups include a first terminal and a second terminal. One end of the first interface and one end of the second interface are electrically connected to the positive and negative terminals of the battery box, respectively. One end of the first terminal in at least two terminal groups is electrically connected to the other end of the first interface in the interface group, and one end of the second terminal in at least two terminal groups is electrically connected to the other end of the second interface in the interface group. The other ends of the first terminal and the other ends of the second terminal are electrically connected to battery swapping connectors. This allows the use of multiple battery swapping connectors to transmit power to the vehicle, ensuring stable and reliable connection and disconnection during the battery swapping process, thereby achieving efficient and stable power transmission and improving the overall performance and efficiency of battery swapping. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic block diagram of a battery swapping system provided in an embodiment of this application;

[0048] Figure 2 A structural diagram of the first high-voltage box provided in an embodiment of this application;

[0049] Figure 3 This is a structural diagram of the second high-voltage box provided in an embodiment of this application. Detailed Implementation

[0050] 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0052] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0053] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0054] Furthermore, in this application, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific implementation.

[0055] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic block diagram of a battery swapping system provided in an embodiment of this application; Figure 2 This is a structural diagram of the first high-voltage box 10 provided in an embodiment of this application. Figure 1 and Figure 2 As shown, this application provides a battery swapping system, which includes:

[0056] The first high-voltage box 10 is provided with at least one interface group and multiple terminal groups. The interface group includes a first interface A1 and a second interface A2, and the terminal group includes a first terminal B1 and a second terminal B2.

[0057] One end of the first interface A1 and one end of the second interface A2 are electrically connected to the positive and negative terminals of the battery box 20, respectively.

[0058] One end of the first terminal B1 in at least two terminal groups is electrically connected to the other end of the first interface A1 in the interface group, and one end of the second terminal B2 in at least two terminal groups is electrically connected to the other end of the second interface A2 in the interface group.

[0059] The other end of the first terminal B1 and the other end of the second terminal B2 are both electrically connected to the power swapping connector 30.

[0060] In this embodiment, the first high-voltage box 10 can be the secondary high-voltage box of the battery swapping system, which can be located at the battery end. After the first high-voltage box 10 is electrically connected to the battery box 20, it can be electrically connected to the vehicle end using the battery swapping connector 30 to solve the problem of insufficient driving range of electric vehicle batteries. This can not only improve the driving range and operating efficiency of electric vehicles, but also promote the sustainable development of the new energy vehicle industry through the development direction of intelligence and standardization.

[0061] The battery swapping connector 30 is a key component in the electric vehicle battery swapping system, used to achieve fast, efficient, and stable battery replacement between the electric vehicle and the battery swapping station. The battery swapping connector 30 typically consists of a plug and a socket, using a precise mating and locking mechanism to ensure stable and reliable connection and disconnection of the battery pack during the swapping process. The battery swapping connector 30 can also provide mixed connections for high voltage, low voltage, communication, and grounding to meet the battery swapping frequency and insertion / removal performance requirements of different vehicle models.

[0062] Specifically, this application provides multiple terminal groups at the first high-voltage box 10, each terminal group corresponding to a battery swapping connector 30. Simultaneously, one end of the first terminal B1 in at least two terminal groups is electrically connected to the other end of the first interface A1 in the interface group, and one end of the second terminal B2 in at least two terminal groups is electrically connected to the other end of the second interface A2 in the interface group. This allows for the use of multiple battery swapping connectors 30 to transmit power to the vehicle, ensuring stable and reliable connection and disconnection during the battery swapping process. This achieves efficient and stable power transmission, improving the overall performance and efficiency of the battery swapping process. The first interface A1 can be electrically connected to the positive terminal of the battery box 20, and the second interface A2 can be electrically connected to the negative terminal of the battery box 20. The battery box 20 can be understood as a battery pack.

[0063] The battery swapping system provided in this application includes a first high-voltage box 10, which is provided with at least one interface group and multiple terminal groups. The interface group includes a first interface A1 and a second interface A2, and the terminal group includes a first terminal B1 and a second terminal B2. One end of the first interface A1 and one end of the second interface A2 are electrically connected to the positive and negative terminals of the battery box 20, respectively. One end of the first terminal B1 in at least two terminal groups is electrically connected to the other end of the first interface A1 in the interface group, and one end of the second terminal B2 in at least two terminal groups is electrically connected to the other end of the second interface A2 in the interface group. The other ends of the first terminal B1 and the second terminal B2 are electrically connected to the battery swapping connector 30. This allows the use of multiple battery swapping connectors 30 to transmit power to the vehicle, ensuring stable and reliable connection and disconnection during the battery swapping process, thereby achieving efficient and stable power transmission and improving the overall performance and efficiency of the battery swapping system.

[0064] In some embodiments, such as Figure 2 As shown, the first high-voltage box 10 is provided with multiple interface groups; wherein, the other ends of the first terminals B1 in each interface group are electrically connected to each other, and the other ends of the second terminals B2 in each interface group are electrically connected to each other.

[0065] In this embodiment, each interface group can be electrically connected to a series-connected battery box 20. After multiple series-connected battery boxes 20 are electrically connected through the corresponding interface groups, they can combine in the first high-voltage box 10. This not only effectively distributes and manages the current, but also effectively ensures the current balance, thus achieving efficient power supply to the vehicle's high-voltage system.

[0066] In some embodiments, such as Figure 2 As shown, the first high-voltage box 10 is also equipped with multiple Hall sensor Halls; the number of Hall sensor Halls is equal to the number of interface groups, one end of the Hall sensor Hall is electrically connected to the other end of the second interface A2, and the other end of the Hall sensor Hall is electrically connected to one end of the second terminal B2.

[0067] In this embodiment, a Hall sensor is provided at the second interface A2 of each interface group. It can detect the current before the current merges, thereby determining the current difference between each interface group. This allows for the detection of the current in different branches under electrical conditions or after a battery swap, ensuring a balanced current distribution in each branch. If a branch fault occurs, the Battery Management System (BMS) can quickly identify the problematic branch and report the fault.

[0068] In some embodiments, such as Figure 2As shown, the first high-voltage box 10 is also equipped with multiple first relays KA1 and multiple second relays KA2; wherein, the number of first relays KA1 is equal to the number of terminal groups, one end of the first relay KA1 is electrically connected to the other end of the first interface A1, and the other end of the first relay KA1 is electrically connected to one end of the first terminal B1; the number of second relays KA2 is equal to the number of terminal groups, one end of the second relay KA2 is electrically connected to the other end of the second interface A2, and the other end of the second relay KA2 is electrically connected to one end of the second terminal B2.

[0069] In this embodiment, the first relay KA1 and the second relay KA2 can be the positive charging and discharging relay and the negative charging and discharging relay in the first high-voltage box 10, respectively. Each terminal group has a set of first relay KA1 and second relay KA2, which can realize effective control of the high-voltage circuit and play the role of switching control, equipment protection and automation control.

[0070] In some embodiments, such as Figure 2 As shown, the first high-voltage box 10 is also provided with at least one main control board 101 and a first communication interface C; wherein, one end of the first communication interface C is electrically connected to the battery box 20, and the other end of the first communication interface C is electrically connected to the main control board 101 and the battery swapping connector 30 respectively, and the main control board 101 is electrically connected to the battery swapping connector 30.

[0071] In this embodiment, three main control boards 101 can be installed inside the high-voltage box. Each main control board 101 can correspond to an interface group, which can realize real-time monitoring of the battery boxes 20 connected in series at each interface group to ensure that the battery pack operates in the most efficient and safe way.

[0072] Meanwhile, the first communication interface C can be directly connected to the second high-voltage box 40 at the vehicle end via the battery swapping connector 30 to enable communication with the vehicle end. Alternatively, the main control board 101 can also be connected to the second high-voltage box 40 at the vehicle end via the battery swapping connector 30 to enable communication with the vehicle end. Furthermore, the main control board 101 can detect the status of the battery swapping connector 30 to determine whether the battery swapping connector 30 has been successfully connected.

[0073] In some embodiments, such as Figure 2 As shown, the first high-voltage box 10 is also equipped with a communication module 102, which is electrically connected to the main control board 101.

[0074] In this embodiment, the communication module 102 can be a telematics control unit, abbreviated as T-BOX, also known as a telematics control unit (TCU). It is an intelligent terminal device composed of a processor, GPS module, 4G / 5G module (with SIM card function), and supports multiple interfaces (such as CAN bus, USB, RS-232, Bluetooth, etc.), and is an important component of the vehicle-to-everything (V2X) system. By connecting the onboard CAN bus and an external cloud platform, it enables communication and data exchange between vehicles (V2V), between vehicles and infrastructure (V2I), and between vehicles and the Internet (V2N).

[0075] In some embodiments, such as Figure 2 As shown, the first high-voltage box 10 is also provided with a first debugging interface D, which is electrically connected to the main control board 101. In this embodiment, the first debugging interface D is used to ensure the normal operation of the high-voltage distribution box during installation and debugging, so as to ensure the safe, reliable and efficient operation of the equipment.

[0076] In some embodiments, such as Figure 1 and Figure 3 As shown, the battery swapping system also includes a second high-voltage box 40; wherein, the second high-voltage box 40 is located at the vehicle end and is electrically connected to the battery swapping connector 30.

[0077] In this embodiment, the second high-voltage box 40 can be understood as the main high-voltage box of the battery swapping system. It can be located at the vehicle end. After the first high-voltage box 10 collects the current, it can achieve current equalization in the second high-voltage box 40 through the battery swapping connector 30 to achieve the effect of voltage equalization. This can solve the problem of uneven voltage and power between the branch battery boxes 20.

[0078] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is provided with at least one port group and at least one charging and discharging socket group; wherein, the port group includes a first port E1 and a second port E2, and the charging and discharging socket group includes a first charging and discharging socket and a second charging and discharging socket; one end of the first port E1 and one end of the second port E2 are electrically connected to the power swapping connector 30, the other end of the first port E1 is electrically connected to the first charging and discharging socket, and the other end of the second port E2 is electrically connected to the second charging and discharging socket.

[0079] In this embodiment, the first port E1 and the second port E2 in the port group can be electrically connected to the battery swapping connector 30. Simultaneously, the first charging / discharging port and the second charging / discharging port in the charging / discharging port group can be electrically connected to the first port E1 and the second port E2 in the port group, respectively. That is, one charging / discharging port corresponds to one port group. The charging / discharging port group can be used to discharge externally and also to charge the battery box 20 at the first high-voltage box 10.

[0080] It should be noted that the second high-voltage box 40 provided in this application can be configured as a charging and discharging port with the same port or as a charging and discharging port with different ports. The specific design method can be selected according to the actual application, and this application does not make specific limitations.

[0081] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is provided with multiple port groups and multiple charging and discharging socket groups; wherein, the number of port groups is equal to the number of battery swapping connectors 30, the other end of the first port E1 in at least two port groups is electrically connected to the first charging and discharging socket in a charging and discharging socket group, and the other end of the second port E2 in at least two port groups is electrically connected to the second charging and discharging socket in a charging and discharging socket group.

[0082] In this embodiment, the number of port groups is equal to the number of battery swapping connectors 30, which ensures that the power at the first high-voltage box 10 is stably transmitted to the vehicle end, ensuring stable and reliable connection and disconnection during the battery swapping process, realizing efficient and stable power transmission, and improving the overall performance and efficiency of battery swapping. The first port E1 in each port group can be electrically connected to the first charging and discharging port in all charging and discharging port groups, and the second port E2 in each port group can be electrically connected to the second charging and discharging port in all charging and discharging port groups. This ensures that the power at the first high-voltage box 10 can be stably transmitted from the second high-voltage box 40 to the vehicle, thereby ensuring that the vehicle can operate stably and reliably.

[0083] In some embodiments, such as Figure 3 As shown, the first charging and discharging port includes a first charging port G1 and a first discharging port F1. The second high-voltage box 40 is provided with at least one third relay KA3. One end of the third relay KA3 is electrically connected to the other end of each first port E1 and the first discharging port F1, and the other end of the third relay KA3 is electrically connected to the first charging port G1.

[0084] In this embodiment, the third relay KA3 can be the main positive relay in the second high voltage box 40. A third relay KA3 can be set at each first charging port G1, thereby realizing the control of the charging on and off of the battery box 20.

[0085] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is also provided with at least one first fuse FU1; wherein, the number of first fuses FU1 is equal to the number of charging and discharging socket groups; one end of each first fuse FU1 is electrically connected to the other end of each first port E1, and the other end of the first fuse FU1 is electrically connected to the first charging and discharging socket.

[0086] In this embodiment, the first fuse FU1 can be the main positive fuse, which is shared with the second high voltage box 40. At the same time, no fuse is installed in the main positive circuit in the first high voltage box 10, which can be shared with the fuse in the battery box 20. Thus, the volume and weight of the first high voltage box 10 can be reduced by using the fuse built into the battery box 20 which is supplied as an integral part.

[0087] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is also provided with at least one maintenance switch MSD; wherein, the number of maintenance switches MSD is equal to the number of charging and discharging port groups; one end of each maintenance switch MSD is electrically connected to the other end of each first port E1, and the other end of each maintenance switch MSD is electrically connected to the first charging and discharging port.

[0088] In this embodiment, each charging / discharging port group corresponds to a maintenance switch (MSD). The maintenance switch (MSD) is a key electrical component used to control the switching operation of the circuit, realizing the function of current flow. In vehicles, the maintenance switch (MSD) can be used for power-off operations of high-voltage systems to ensure the safety of maintenance personnel.

[0089] In some embodiments, such as Figure 3 As shown, the second charging and discharging port includes a second charging port G2 and a second discharging port F2. The second high-voltage box 40 is also provided with a fourth relay KA4 and at least one fifth relay KA5. One end of the fourth relay KA4 and the other end of the fourth relay KA4 are electrically connected to the other end of the second port E2. The other end of the fourth relay KA4 is electrically connected to the second discharging port F2, and the other end of the fifth relay KA5 is electrically connected to the second charging port G2.

[0090] In this embodiment, the fourth relay KA4 and the fifth relay KA5 are both main negative relays in the second high-voltage box 40. The fourth relay KA4 can be used to control the on / off state of the second discharge interface, and there can be one of them in the second high-voltage box 40. The fifth relay KA5 can be used to control the on / off state of the second charging port G2, and the number of it can be equal to the number of the second charging port G2.

[0091] In some embodiments, such as Figure 3As shown, the second high-voltage box 40 is also equipped with a second debugging interface L2, a second communication interface L1 and a high-voltage bus. The second debugging interface L2 and the second communication interface L1 are both electrically connected to the high-voltage bus.

[0092] In this embodiment, the second debugging interface L2 can be used not only for power distribution and control, but also for communication, program debugging, safety protection, and fault diagnosis. Simultaneously, a high-voltage battery (HVB) can be installed within the second high-voltage box 40. As part of the high-voltage electronic control assembly, it is responsible for collecting signals from the gear position, accelerator pedal, and brake pedal to control the motor's forward and reverse rotation, power, torque, and speed, ensuring the normal operation of the vehicle. Furthermore, the HVB optimizes engine performance, such as electronically controlling ignition, fuel injection, and air-fuel ratio to achieve optimal operating conditions, improving overall vehicle performance, saving energy, and reducing emissions. The HVB not only provides and stores power but also possesses safety functions such as short-circuit overload rapid power-off protection and leakage protection to ensure the safe operation of electric vehicles. In the powertrain of new energy vehicles, the HVB is a crucial component connecting the power battery, motor controller, and the vehicle's high-voltage electrical systems; its performance directly affects the reliability and safety of the entire vehicle.

[0093] In addition, the high-voltage bus HVB can also be electrically connected to the battery swapping connector 30 through the second communication interface L1 to enable communication with the main control board 101 inside the first high-voltage box 10 and the battery box 20 at the first high-voltage box 10.

[0094] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is also provided with a first thermal management interface H1 and a second thermal management interface H2; wherein, the first thermal management interface H1 is electrically connected to the other end of each first port E1, and the second thermal management interface H2 is electrically connected to the other end of each second port E2.

[0095] In this embodiment, the first thermal management interface H1 and the second thermal management interface H2 can be the positive and negative interfaces of the thermal management system, which are electrically connected to the port group, thereby enabling the battery box 20 to supply power to the thermal management system (TMS).

[0096] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is also provided with a pre-charge switch FU2 and a pre-charge resistor R1; one end of the pre-charge switch FU2 is electrically connected to the other end of each second port E2, the other end of the pre-charge switch FU2 is electrically connected to one end of the pre-charge resistor R1, and the other end of the pre-charge resistor R1 is electrically connected to the second discharge port F2.

[0097] In this embodiment, the precharge switch FU2 and the precharge resistor R1 can be used for main negative precharge, thereby reducing one main positive relay at the first discharge port F1, thus reducing the size and weight of the second high-voltage box 40 and achieving cost savings. The precharge switch FU2 can be a relay.

[0098] In some embodiments, such as Figure 3 As shown, the second high-voltage box 40 is also equipped with a second fuse FU2 and a sixth relay KA6; wherein, one end of the second fuse FU2 is electrically connected to the other end of each first port E1, and the other end of the second fuse FU2 is electrically connected to the first thermal management interface H1; one end of the sixth relay KA6 is electrically connected to the other end of each first port E1, and the other end of the sixth relay KA6 is electrically connected to the first thermal management interface H1.

[0099] In this embodiment, the second fuse FU2 and the sixth relay KA6 are located at the first thermal management interface H1, thereby preventing short circuits in the vehicle's liquid cooling power supply circuit.

[0100] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery swapping system, characterized in that, include: The first high-voltage box is provided with at least one interface group and multiple terminal groups. The interface group includes a first interface and a second interface, and the terminal group includes a first terminal and a second terminal. Wherein, one end of the first interface and one end of the second interface are electrically connected to the positive and negative terminals of the battery box, respectively; One end of the first terminal in at least two of the terminal groups is electrically connected to the other end of the first interface in the interface group, and one end of the second terminal in at least two of the terminal groups is electrically connected to the other end of the second interface in the interface group; The other end of the first terminal and the other end of the second terminal are both electrically connected to the battery swapping connector.

2. The battery swapping system according to claim 1, characterized in that, The first high-voltage box is provided with multiple interface groups; The other ends of the first terminals in each of the interface groups are electrically connected to each other, and the other ends of the second terminals in each of the interface groups are electrically connected to each other.

3. The battery swapping system according to claim 2, characterized in that, The first high-voltage box is also equipped with multiple Hall sensors; The number of Hall sensors is equal to the number of interface groups. One end of each Hall sensor is electrically connected to the other end of the second interface, and the other end of each Hall sensor is electrically connected to one end of the second terminal.

4. The battery swapping system according to claim 1, characterized in that, The first high-voltage box is also equipped with multiple first relays; Wherein, the number of the first relays is equal to the number of the terminal groups, one end of the first relay is electrically connected to the other end of the first interface, and the other end of the first relay is electrically connected to one end of the first terminal; or / and, The first high-voltage box is also equipped with multiple second relays; Wherein, the number of the second relays is equal to the number of the terminal groups, one end of the second relay is electrically connected to the other end of the second interface, and the other end of the second relay is electrically connected to one end of the second terminal; or / and, The first high-voltage box is also equipped with at least one main control board and a first communication interface; Wherein, one end of the first communication interface is electrically connected to the battery box, and the other end of the first communication interface is electrically connected to the main control board and the battery swapping connector, and the main control board is electrically connected to the battery swapping connector.

5. The battery swapping system according to claim 4, characterized in that, The first high-voltage box is also equipped with a communication module, which is electrically connected to the main control board; or / and, The first high-voltage box is also provided with a first debugging interface, which is electrically connected to the main control board.

6. The battery swapping system according to any one of claims 1-5, characterized in that, The battery swapping system also includes a second high-voltage box; The second high-voltage box is located at the vehicle end and is electrically connected to the battery swapping connector.

7. The battery swapping system according to claim 6, characterized in that, The second high-voltage box is provided with at least one port group and at least one charging / discharging socket group; The port group includes a first port and a second port, and the charging / discharging port group includes a first charging / discharging port and a second charging / discharging port. One end of the first port and one end of the second port are electrically connected to the battery swapping connector, the other end of the first port is electrically connected to the first charging / discharging port, and the other end of the second port is electrically connected to the second charging / discharging port.

8. The battery swapping system according to claim 7, characterized in that, The second high-voltage box is provided with multiple port groups and multiple charging / discharging socket groups; The number of port groups is equal to the number of battery swapping connectors. The other end of the first port in at least two of the port groups is electrically connected to a first charging / discharging port in a charging / discharging port group, and the other end of the second port in at least two of the port groups is electrically connected to a second charging / discharging port in a charging / discharging port group.

9. The battery swapping system according to claim 7, characterized in that, The first charging / discharging port includes a first charging port and a first discharging port, and the second high-voltage box is provided with at least one third relay; Wherein, one end of the third relay is electrically connected to the other end of each of the first ports and the first discharge port, and the other end of the third relay is electrically connected to the first charging port; or / and, The second high-voltage box is also equipped with at least one first fuse; Wherein, the number of the first fuses is equal to the number of the charging / discharging port groups; one end of each first fuse is electrically connected to the other end of each of the first ports, and the other end of each first fuse is electrically connected to the first charging / discharging port; or / and, The second high-voltage box is also equipped with at least one maintenance switch; The number of maintenance switches is equal to the number of charging / discharging port groups; one end of each maintenance switch is electrically connected to the other end of each of the first ports, and the other end of each maintenance switch is electrically connected to the first charging / discharging port; or / and, The second charging and discharging port includes a second charging port and a second discharging port. The second high-voltage box is also provided with a fourth relay and at least one fifth relay. Wherein, one end of the fourth relay and the other end of the fourth relay are both electrically connected to the other end of the second port, the other end of the fourth relay is electrically connected to the second discharge port, and the other end of the fifth relay is electrically connected to the second charging port; or / and, The second high-voltage box is also equipped with a second debugging interface, a second communication interface, and a high-voltage bus. The second debugging interface and the second communication interface are both electrically connected to the high-voltage bus; or / and, The second high-pressure box is also equipped with a first thermal management interface and a second thermal management interface; The first thermal management interface is electrically connected to the other end of each of the first ports, and the second thermal management interface is electrically connected to the other end of each of the second ports.

10. The battery swapping system according to claim 9, characterized in that, The second high-voltage box is also equipped with a pre-charge switch and a pre-charge resistor; Wherein, one end of the precharge switch is electrically connected to the other end of each of the second ports, the other end of the precharge switch is electrically connected to one end of the precharge resistor, and the other end of the precharge resistor is electrically connected to the second discharge port; or / and, The second high-voltage box is also equipped with a second fuse; Wherein, one end of the second fuse is electrically connected to the other end of each of the first ports, and the other end of the second fuse is electrically connected to the first thermal management interface; or / and, The second high-voltage box is also equipped with a sixth relay; One end of the sixth relay is connected to the other end of the first port, and the other end of the sixth relay is electrically connected to the first thermal management interface.

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