A high voltage box

Abstract

The application discloses a high-voltage box, comprising a box body and a plurality of interface groups, the box body has a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall and the second side wall are located on opposite sides of the box body along a first direction, and the third side wall and the fourth side wall are located on opposite sides of the box body along a second direction, each interface group comprises a plurality of positive electrode interfaces and negative electrode interfaces, the negative electrode interfaces of each interface group are arranged on the first side wall and one side of the third side wall and / or the fourth side wall close to the first side wall, and the positive electrode interfaces of each interface group are arranged on the second side wall and one side of the third side wall and / or the fourth side wall close to the second side wall. In the application, the positive electrode interfaces and the negative electrode interfaces in each interface group of the high-voltage box are arranged on two sides of the box body, so that the arrangement of copper bars in the high-voltage box is facilitated, the copper bars of the positive electrode and the copper bars of the negative electrode can be arranged on different sides, the electrode gap between the copper bars of the positive electrode and the copper bars of the negative electrode is increased, the safety is improved, and meanwhile, external wiring of the high-voltage box is facilitated.

Description

Technical Field

[0001] This application relates to the field of power distribution technology, and in particular to a high-voltage box. Background Technology

[0002] High-voltage boxes (high-voltage distribution boxes / high-voltage control boxes) are core components in electric vehicles and energy storage systems, primarily used for high-voltage power distribution, safety protection, and system monitoring. They enable bidirectional power flow (charging / discharging), ensuring stable distribution of high-voltage power.

[0003] The high-voltage box is equipped with multiple interface groups, such as discharge interface group, battery interface group and charging interface group, etc. Each of these interface groups includes multiple positive and negative interfaces. The arrangement of each positive and negative interface on the box affects the arrangement of the copper busbar inside the high-voltage box and the arrangement of external cables. If the interfaces are arranged in a messy manner, it will increase the difficulty of laying the internal copper busbar and external cables of the high-voltage box and pose safety hazards. Utility Model Content

[0004] To solve one of the above-mentioned technical problems, this utility model provides a high-voltage box.

[0005] The present invention adopts the following technical solution:

[0006] A high-voltage box, comprising:

[0007] The box body has a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall and the second side wall are located on opposite sides of the box body along a first direction, and the third side wall and the fourth side wall are located on opposite sides of the box body along a second direction;

[0008] Multiple interface groups, each of the interface groups including several positive interfaces and negative interfaces, the negative interfaces of each interface group are disposed on the side of the first sidewall and the third and / or fourth sidewall close to the first sidewall, and the positive interfaces of each interface group are disposed on the side of the second sidewall and the third and / or fourth sidewall close to the second sidewall.

[0009] Optionally, each of the interface groups includes a discharge interface group;

[0010] Each negative terminal of the discharge interface group is disposed on the first side wall, and each positive terminal of the discharge interface group is disposed on the second side wall.

[0011] Optionally, each of the interface groups includes a battery interface group;

[0012] Each positive terminal of the battery interface group is located on the third side wall and / or the fourth side wall, on the side closest to the second side wall;

[0013] Each negative terminal of the battery interface group is located on the third and / or fourth sidewalls, near the first sidewall.

[0014] Optionally, the third and fourth sidewalls are each provided with a plurality of positive and negative interfaces for battery interface groups.

[0015] Optionally, the battery interface group includes five positive terminals and five negative terminals;

[0016] Specifically, the third sidewall has three negative terminals on the side closest to the first sidewall, the fourth sidewall has two negative terminals on the side closest to the first sidewall, the third sidewall has two positive terminals on the side closest to the second sidewall, and the fourth sidewall has three positive terminals on the side closest to the second sidewall.

[0017] Optionally, each of the interface groups includes a charging interface group;

[0018] The positive and negative interfaces of the charging interface group are located on the third side wall between the positive and negative interfaces of the battery interface group.

[0019] The positive and negative interfaces of the charging interface group are located on the fourth side wall between the positive and negative interfaces of the battery interface group.

[0020] Optionally, the high-voltage box includes a plurality of maintenance switches, which are disposed on the second side wall.

[0021] Optionally, the high-voltage box includes a TMS high-voltage interface, which is disposed on the first sidewall.

[0022] Optionally, low-voltage communication interfaces are provided on the third and fourth sidewalls.

[0023] Optionally, the periphery of the box body is provided with a plurality of mounting feet, and the mounting feet have mounting holes.

[0024] By adopting the above technical solution, this application has the following beneficial effects:

[0025] In this application, the positive and negative interfaces of each interface group of the high voltage box are located on both sides of the box body, which facilitates the arrangement of each copper busbar inside the high voltage box. The positive and negative copper busbars can be arranged on opposite sides, which increases the electrode gap between the positive and negative copper busbars, improves safety, and also facilitates the external wiring of the high voltage box.

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0028] Figure 1 This shows a top view of the high-voltage box provided in an embodiment of this application;

[0029] Figure 2 This shows a first-view view of the high-voltage box provided in an embodiment of this application;

[0030] Figure 3 This shows a second perspective view of the high-voltage box provided in an embodiment of this application;

[0031] Figure 4 The electrical schematic diagram of the high-voltage box provided in the embodiment of this application is shown.

[0032] In the diagram: 1. First sidewall; 2. Second sidewall; 3. Third sidewall; 4. Fourth sidewall; 51. Positive terminal of discharge interface group; 52. Negative terminal of discharge interface group; 61. Negative terminal of battery interface group; 62. Positive terminal of battery interface group; 7. Charging interface group; 8. Maintenance switch; 9. TMS high voltage interface; 10. Low voltage communication interface; 11. Mounting foot.

[0033] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] like Figures 1 to 4 As shown in the illustration, this application provides a high-voltage box, comprising: a box body and multiple interface groups. The box body has a first sidewall 1, a second sidewall 2, a third sidewall 3, and a fourth sidewall 4. The first sidewall 1 and the second sidewall 2 are located on opposite sides of the box body along a first direction, and the third sidewall 3 and the fourth sidewall 4 are located on opposite sides of the box body along a second direction. The first direction and the second direction may be perpendicular to each other. Each interface group includes a plurality of positive and negative interfaces. The negative interfaces of each interface group are disposed on the side of the first sidewall 1 and the third sidewall 3 and / or the fourth sidewall 4 closest to the first sidewall 1, and the positive interfaces of each interface group are disposed on the side of the second sidewall 2 and the third sidewall 3 and / or the fourth sidewall 4 closest to the second sidewall 2.

[0038] In this application, the positive and negative interfaces of each interface group of the high voltage box are located on both sides of the box body, which facilitates the arrangement of each copper busbar inside the high voltage box. The positive and negative copper busbars can be arranged on opposite sides, which increases the electrode gap between the positive and negative copper busbars, improves safety, and also facilitates the external wiring of the high voltage box.

[0039] In some possible implementations, each of the interface groups includes a discharge interface group, with each negative terminal 52 of the discharge interface group disposed on the first sidewall 1 and each positive terminal 51 of the discharge interface group disposed on the second sidewall 2.

[0040] The discharge interface group includes multiple positive interfaces 51 and negative interfaces 52. The positive interfaces 51 and negative interfaces 52 are located on opposite sides of the box, separating the positive and negative terminals. The arrangement is reasonable, which facilitates wiring inside the high-voltage box as well as wiring outside the high-voltage box.

[0041] In some possible implementations, each of the interface groups includes a battery interface group, with each positive terminal 62 of the battery interface group disposed on the side of the third sidewall 3 and / or the fourth sidewall 4 near the second sidewall 2, and each negative terminal 61 of the battery interface group disposed on the side of the third sidewall 3 and / or the fourth sidewall 4 near the first sidewall 1.

[0042] The battery interface group is used to connect the battery pack. In this embodiment, the battery interface group is set on the third side wall 3 or the fourth side wall 4, avoiding the discharge interface group. Each negative terminal 61 of the battery interface group is close to the first side wall 1, and the positive terminal 62 is close to the second side wall 2, so that each positive terminal and negative terminal of the high voltage box is set on separate sides, which facilitates wiring.

[0043] In some possible implementations, the third sidewall 3 and the fourth sidewall 4 are each provided with a positive terminal interface 62 and a negative terminal interface 61 of a plurality of battery interface groups.

[0044] The battery system includes multiple battery packs arranged horizontally in sequence. The high-voltage box is located at the bottom center of each battery pack. By simultaneously setting the positive terminal interface 62 and the negative terminal interface 61 of the battery interface group on the same side wall (the third side wall 3 or the fourth side wall 4), the wiring of each battery pack on the top two sides of the high-voltage box is facilitated, and the cables connecting the battery packs to the high-voltage box are arranged in a neat and orderly manner, avoiding redundancy and mess.

[0045] In some possible implementations, the battery interface group includes five positive interfaces 62 and five negative interfaces 61. Three negative interfaces 61 are located on the side of the third sidewall 3 closest to the first sidewall 1, two negative interfaces 61 are located on the side of the fourth sidewall 4 closest to the first sidewall 1, two positive interfaces 62 are located on the side of the third sidewall 3 closest to the second sidewall 2, and three positive interfaces 62 are located on the side of the fourth sidewall 4 closest to the second sidewall 2. The discharge interface group can have four positive interfaces 51 and four negative interfaces 52. This application's high-voltage box achieves high integration within limited space, designing five battery positive and negative interfaces, four charging interfaces, and four discharging interfaces. This improves the system's battery capacity while also being compatible with systems with more diverse input and output combinations.

[0046] Since the system voltage is limited and cannot be increased indefinitely, and the energy of the battery cells is limited, the only way to increase the system capacity is to add parallel battery branches. This application sets the battery interface group to five positive interfaces 62 and five negative interfaces 61, which allows more batteries to be connected in parallel to increase the capacity.

[0047] In some possible implementations, each of the interface groups includes a charging interface group 7, with a portion of the positive interface and a portion of the negative interface of the charging interface group 7 disposed on the third sidewall 3 between the positive interface 62 and the negative interface 61 of the battery interface group, and a portion of the positive interface and a portion of the negative interface of the charging interface group 7 disposed on the fourth sidewall 4 between the positive interface 62 and the negative interface 61 of the battery interface group.

[0048] The charging interface group 7 may include four positive interfaces and four negative interfaces, wherein two positive interfaces and two negative interfaces are disposed on the third side wall 3, and the other two positive interfaces and two negative interfaces are disposed on the fourth side wall 4.

[0049] The battery system has charging sockets on both sides. The high-voltage box inside the battery system is located between these two charging sockets. Two sets of positive and negative terminals are located on opposite sides of the high-voltage box, allowing for easy connection to the charging sockets on either side of the battery system via cables. The charging sockets are used to connect a charging gun for charging.

[0050] In some possible implementations, the high-voltage box includes a plurality of maintenance switches 8 disposed on the second sidewall 2. Each maintenance switch 8 and each positive terminal 51 of the discharge interface group are arranged sequentially along the length of the second sidewall 2.

[0051] In some possible implementations, such as Figure 3 As shown, the high-voltage box includes a TMS high-voltage interface 9, which is disposed on the first sidewall 1.

[0052] In some possible implementations, low-voltage communication interfaces 10 are provided on the third sidewall 3 and the fourth sidewall 4. The positive and negative interfaces of the charging interface group 7 on the third sidewall 3 and the fourth sidewall 4 can be arranged sequentially with the low-voltage communication interface 10 along the width direction of the respective sidewall. That is, the charging interface group 7 is set at a lower height than the battery interface group to make room at the top for the low-voltage communication interface 10.

[0053] In some possible implementations, the periphery of the housing is provided with a plurality of mounting feet 11, each having mounting holes, facilitating connection to the battery system frame or cluster via fasteners.

[0054] This application embodiment, based on the highly integrated high-voltage box function, adjusts the internal structural design and circuit design of the high-voltage box. It features five battery interface groups, four charging interface groups 7, and four discharging interface groups on the external interfaces. The high-voltage box integrates multiple fuses, multiple relays, pre-charge resistors, a BMU, copper busbars, wiring harnesses, an MSD (manual maintenance switch 8), and other components. The external interfaces include the battery interface group for battery connection, the TMS high-voltage interface 9, the low-voltage communication interface 10, the charging interface group 7, and the discharging interface group. Figure 4The electrical schematic shown illustrates that the positive and negative terminals of the five battery packs are connected to the battery interface group of the high-voltage box via a high-voltage wiring harness. The five positive branches of the battery pack are each connected to an MSD (Maintenance Switch) inside the high-voltage box, then converge into a main circuit. This main circuit is further divided into four charging circuits, a discharging circuit, and a TMS high-voltage circuit. Each charging circuit is equipped with a relay and a fuse. The discharging circuit, after passing through a main negative relay, branches into four discharging branches connected to external interfaces. Parallel to the main positive relay is a pre-charge circuit, including a pre-charge relay and a pre-charge resistor, used to protect the main relay. The TMS high-voltage circuit also has a relay and a fuse. Similarly, the five negative branches of the battery pack are also converged into a main circuit inside the high-voltage box. Each branch is equipped with a current sensor to detect the circuit current. After converging into the main circuit, a TMS negative circuit and a main negative circuit are branched out. The main negative circuit, after passing through a main negative relay, branches into four discharging negative branches and four charging negative branches, each connected to its respective interface. The TMS negative circuit can also be designed to branch off after passing through the main negative relay.

[0055] The high-voltage box provided in this application features five battery interfaces, four charging interfaces, and four discharging interfaces, supporting up to five batteries in parallel. This increases system power and discharge capacity, and supports up to four charging guns, resulting in high charging efficiency and more diverse charging scenarios. In this application, the discharging interfaces have four branches, and the cable diameter can be designed to be compatible with 70mm. 2 95mm 2 120mm 2 135mm 2 150mm 2 With multiple specifications, it can be adapted to and supports connection to more types of vehicle motor controllers, greatly improving the versatility of the high-voltage box.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A high-voltage box, characterized in that, include: The box body has a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall and the second side wall are located on opposite sides of the box body along a first direction, and the third side wall and the fourth side wall are located on opposite sides of the box body along a second direction; Multiple interface groups, each of the interface groups including several positive interfaces and negative interfaces, the negative interfaces of each interface group are disposed on the side of the first sidewall and the third and / or fourth sidewall close to the first sidewall, and the positive interfaces of each interface group are disposed on the side of the second sidewall and the third and / or fourth sidewall close to the second sidewall.

2. The high-voltage box according to claim 1, characterized in that, Each of the aforementioned interface groups includes a discharge interface group; Each negative terminal of the discharge interface group is disposed on the first side wall, and each positive terminal of the discharge interface group is disposed on the second side wall.

3. The high-voltage box according to claim 1, characterized in that, Each of the aforementioned interface groups includes a battery interface group; Each positive terminal of the battery interface group is located on the third side wall and / or the fourth side wall, on the side closest to the second side wall; Each negative terminal of the battery interface group is located on the third and / or fourth sidewalls, near the first sidewall.

4. The high-voltage box according to claim 3, characterized in that, The third and fourth sidewalls are each provided with a number of positive and negative battery interface groups.

5. The high-voltage box according to claim 3, characterized in that, The battery interface group includes five positive terminals and five negative terminals; Specifically, the third sidewall has three negative terminals on the side closest to the first sidewall, the fourth sidewall has two negative terminals on the side closest to the first sidewall, the third sidewall has two positive terminals on the side closest to the second sidewall, and the fourth sidewall has three positive terminals on the side closest to the second sidewall.

6. The high-voltage box according to claim 3, characterized in that, Each of the aforementioned interface groups includes a charging interface group; The positive and negative interfaces of the charging interface group are located on the third side wall between the positive and negative interfaces of the battery interface group. The positive and negative interfaces of the charging interface group are located on the fourth side wall between the positive and negative interfaces of the battery interface group.

7. The high-voltage box according to claim 1, characterized in that, It includes multiple maintenance switches, which are disposed on the second side wall.

8. The high-voltage box according to claim 1, characterized in that, It includes a TMS high-voltage interface, which is disposed on the first sidewall.

9. The high-voltage box according to claim 1, characterized in that, Low-voltage communication interfaces are provided on the third and fourth side walls.

10. The high-voltage box according to any one of claims 1-9, characterized in that, The box body is provided with a plurality of mounting feet on its periphery, and the mounting feet have mounting holes.

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