PDU high-voltage box and vehicle

Abstract

The invention provides a PDU high-voltage box and a vehicle, the PDU high-voltage box comprises a cabinet body, an electrical assembly and a first connector, the cabinet body is provided with a mounting cavity, the electrical assembly is located in the mounting cavity, the first connector comprises a first connecting end and a second connecting end which are connected, at least part of the first connecting end is arranged in the mounting cavity and is connected with the electrical assembly, and the second connecting end is connected with the electrical assembly. At least part of the second connecting end is located on the outer side of the cabinet body and used for being connected with the battery pack, and the second connecting end extends towards the side close to the battery pack. The wiring distance between the PDU high-voltage box connector provided by the invention and the battery pack is short.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a PDU high-voltage box and a vehicle. Background Art

[0002] The PDU high-voltage box is connected to external high-voltage components through a connector to ensure stable transmission of current and signals. In related technologies, the connector usually extends along the length direction of the PDU high-voltage box, while the battery pack and the PDU high-voltage box are usually arranged along the width direction of the PDU high-voltage box. A longer wiring harness is required to connect the connector and the battery pack, resulting in a long wiring distance between the connector and the battery pack. Summary of the invention

[0003] The embodiments of the present invention provide a PDU high-voltage box and a vehicle, which can improve the technical problem of long wiring distance between a connector and a battery pack.

[0004] In a first aspect, an embodiment of the present invention provides a PDU high-voltage box, comprising:

[0005] The cabinet is provided with a mounting cavity;

[0006] An electrical component, located in the mounting cavity;

[0007] A first connector, comprising a first connection end and a second connection end connected to each other, wherein at least a portion of the first connection end is disposed in the mounting cavity and connected to the electrical component, and at least a portion of the second connection end is located outside the cabinet and is used to connect to a battery pack;

[0008] Wherein, the second connecting end extends toward a side close to the battery pack.

[0009] In a second aspect, an embodiment of the present invention provides a vehicle, comprising a battery pack and the above-mentioned PDU high-voltage box, wherein the second connection end extends toward a side close to the battery pack and is used to connect the battery pack to electrically connect the battery pack and the electrical component.

[0010] Beneficial effects of the embodiments of the present invention:

[0011] In an embodiment of the present invention, the first connection end is connected to the electrical component, thereby realizing the electrical connection between the first connector and the electrical component. At least a part of the second connection end is located outside the cabinet, and the second connection end located outside the cabinet is used to connect the battery pack, thereby realizing the electrical connection between the electrical component, the first connector and the external battery pack. Compared with the scheme in the related art that the connector usually extends along the length direction of the PDU high-voltage box, and the battery pack and the PDU high-voltage box are usually arranged along the width direction of the PDU high-voltage box, in the embodiment of the present application, the second connection end extends toward the side close to the battery pack, the distance between the battery pack and the second connection end is shorter, the wiring distance between the battery pack and the second connection end is shorter, and the wiring is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 is a three-dimensional schematic diagram of a PDU high-voltage box provided by an embodiment of the present invention;

[0014] Figure 2 yes Figure 1 Exploded diagram of

[0015] Figure 3 yes Figure 1 A schematic diagram of the structure from the first perspective;

[0016] Figure 4 yes Figure 1 A schematic diagram of the structure of the second perspective;

[0017] Figure 5 yes Figure 1 A three-dimensional schematic diagram of a first connector;

[0018] Figure 6 yes Figure 5 A schematic structural diagram of a first connector from a first perspective;

[0019] Figure 7 yes Figure 5 A schematic structural diagram of a first connector from a second viewing angle;

[0020] Figure 8 yes Figure 1 Schematic diagram of some structures;

[0021] Fig. 9 yes Figure 8 Schematic diagram of the structure with some parts removed;

[0022] Fig.10 yes Fig. 9 Schematic diagram of the structure with some parts removed;

[0023] Fig.11 yes Fig.10 Schematic diagram of the structure with some parts removed;

[0024] Fig.12 yes Fig.10 Removal of the base plate and Fig.11 Schematic diagram of the structure in;

[0025] Fig.13 yes Figure 1 Schematic diagram of the structure of the cabinet and the bracket;

[0026] Fig.14 It is a circuit schematic diagram of a PDU high-voltage box provided in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 100, cabinet; 101, installation cavity; 102, electrical components; 1021, charging positive relay; 1022, TMS relay; 1023, TMS fuse; 1024, pre-charging resistor; 1025, pre-charging relay; 1026, fuse; 1027, MSD; 103, first side wall; 104, second side wall; 105, third side wall; 106, cabinet door; 107, first opening; 1121, fuse;

[0029] 201, first positive interface; 203, second positive interface; 205, third positive interface; 207, positive terminal; 202, first negative interface; 204, second negative interface; 206, third negative interface; 208, negative terminal;

[0030] 300, first connector; 301, first connection end; 303, second connection end;

[0031] 401, first positive power interface; 403, second positive power interface; 402, first negative power interface; 404, second negative power interface; 405, first positive load interface; 407, second positive load interface; 406, first negative load interface; 408, second negative load interface;

[0032] 4010, first sub-connector; 4020, second sub-connector; 4030, third sub-connector; 4040, fourth sub-connector; 4050, fifth sub-connector; 4060, sixth sub-connector; 4070, seventh sub-connector; 4080, eighth sub-connector;

[0033] 500, second connector; 503, fourth connection end;

[0034] 600, first copper bar;

[0035] 700, the second copper bar; 701, the first sub-copper bar; 703, the second sub-copper bar; 705, the third sub-copper bar; 707, the fourth sub-copper bar;

[0036] 801, bottom plate; 803, bracket;

[0037] 901, first positive electrode branch; 902, second positive electrode branch; 903, first positive electrode discharge branch; 904, negative electrode discharge branch; 905, second positive electrode discharge branch; 906, second positive electrode charging branch; 911, first negative electrode charging branch; 912, second negative electrode charging branch. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device.

[0039] The PDU high-voltage box is connected to external high-voltage components through a connector to ensure stable transmission of current and signals. In related technologies, the connector usually extends along the length of the PDU high-voltage box, while the battery pack and the PDU high-voltage box are usually arranged along the width of the PDU high-voltage box. A longer wiring harness is required to connect the connector and the battery pack, resulting in a long wiring distance between the connector and the battery pack.

[0040] Long wiring distances can cause some problems, such as signal attenuation, and greater susceptibility to external electromagnetic interference, such as interference from other electrical devices, radio waves, etc., resulting in unstable signals and even erroneous control actions. Long-distance wiring itself may also produce inductance and capacitance effects, interacting with the surrounding environment and increasing the possibility of interference. More wire material is required, increasing material costs. Additional protective measures such as shielding and filtering may be required, further increasing costs. Long-distance wiring requires more installation space and time, increasing the complexity and difficulty of installation.

[0041] To solve the above problems, the present application embodiment provides a PDU high voltage box, please combine Figure 1 The PDU high-voltage box may include a cabinet 100 and a first connector 300, wherein the second connection end 303 of the first connector 300 is at least partially located outside the cabinet 100 for connecting the battery pack. The second connection end 303 extends toward a side close to the battery pack. The first connector 300 is mainly used to connect the PDU high-voltage box to the battery pack. Figure 2 The PDU high voltage box may further include an electrical component 102. The cabinet 100 is provided with an installation cavity 101. The electrical component 102 is located in the installation cavity 101.

[0042] Please combine Figure 5 , Figure 6 as well as Figure 7 The first connector 300 may include a first connection end 301 and a second connection end 303 connected to each other, wherein the first connection end 301 and the second connection end 303 may be integrally formed, or may be connected by screw connection or the like. At least a portion of the first connection end 301 is disposed in the installation cavity 101, and the first connection end 301 disposed in the installation cavity 101 is connected to the electrical component 102, thereby realizing the electrical connection between the first connector 300 and the electrical component 102. The first connection end 301 and the electrical component 102 may be screwed or welded. The first connector 300 and the cabinet 100 may be screwed.

[0043] At least a portion of the second connection end 303 is located outside the cabinet 100 . The second connection end 303 located outside the cabinet 100 is used to connect to the battery pack, thereby achieving electrical connection between the electrical component 102 , the first connector 300 and the external battery pack.

[0044] Compared with the related art in which the connector usually extends along the length direction of the PDU high-voltage box, and the battery pack and the PDU high-voltage box are usually arranged along the width direction of the PDU high-voltage box, in the embodiment of the present application, the second connection end 303 extends toward the side close to the battery pack, and the distance between the battery pack and the second connection end 303 is shorter. The wiring distance between the battery pack and the second connection end 303 is short, and the wiring is convenient.

[0045] Please combine Figure 2In some embodiments, the cabinet 100 includes a first side wall 103, a second side wall 104, a third side wall 105 and a cabinet door 106, and the first side wall 103, the second side wall 104 and the third side wall 105 are sequentially connected to form the installation cavity 101. The first side wall 103 is arranged opposite to the third side wall 105, and the second side wall 104 is arranged opposite to the cabinet door 106. A battery pack is arranged on the side of the second side wall 104 away from the cabinet door 106. The second connection end 303 is located on the side of the first side wall 103 away from the third side wall 105, and the extension direction of the second connection end 303 is the same as the arrangement direction of the second side wall 104 and the cabinet door 106. In these embodiments, the second connection end 303 arranged on the side of the first side wall 103 away from the third side wall 105 extends in a direction close to the battery pack, and the battery pack is arranged on the side of the second side wall 104 away from the cabinet door 106. The wiring distance between the second connection end 303 and the battery pack is short, and the wiring is convenient.

[0046] Please combine Figure 5 , Figure 6 as well as Figure 7 In some embodiments, the extension direction of the first connection end 301 is perpendicular to the extension direction of the second connection end 303. Figure 2 , the first side wall 103 may be provided with a first opening 107 communicating with the installation cavity 101, and one end of the first connection end 301 is located in the installation cavity 101 and connected to the electrical component 102. The other end opposite to the first connection end 301 passes through the first opening 107 and may be vertically connected to a second connection end 303 located on a side of the first side wall 103 away from the third side wall 105, and the second connection end 303 may extend along the width direction of the cabinet 100. In some embodiments, the second connection end 303 may also be screwed to the first side wall 103 to further secure the second connection end 303 to the first side wall 103.

[0047] Figure 1 The length direction, width direction and height direction of the cabinet 100 are illustrated in the figure. The arrangement direction of the second side wall 104 and the cabinet door 106 is the width direction of the cabinet 100. The arrangement direction of the first side wall 103 and the third side wall 105 is the length direction of the cabinet 100. In some embodiments, when the PDU high-voltage box and the battery pack can be arranged in the Z direction of the vehicle, the PDU high-voltage box is located above the battery pack. In other words, the PDU high-voltage box and the battery pack are arranged in the width direction of the cabinet 100.

[0048] Please combine Figure 1 as well as Figure 2In some embodiments, there are multiple first connectors 300, and the PDU high-voltage box is electrically connected to multiple battery packs through multiple first connectors 300. In these embodiments, there are multiple first connectors 300, and multiple connectors of the same specification are used, thereby reducing production costs. At the same time, in some embodiments, the first connector is screwed to the cabinet 100. Multiple first connectors 300 can be fixed with bolts of the same specification to further reduce costs.

[0049] The first connection end 301 of each first connector 300 can be electrically connected to the electrical component 102, and the extension direction of the first connection end 301 is perpendicular to the extension direction of the second connection end 303. Figure 4 In some embodiments, the plurality of first connectors 303 can be arranged along the height direction of the cabinet 100. Thus, the plurality of first connectors 303 can be arranged in parallel outside the cabinet 100, and the overall structure is compact and the layout is regular.

[0050] Please combine Fig.14 , Fig.14 It is a circuit schematic diagram of the PDU high-voltage box provided by an embodiment of the present invention. The battery pack located outside the PDU high-voltage box may be provided with multiple positive interfaces and multiple negative interfaces. In some embodiments, a first positive interface 201, a second positive interface 203, and a third positive interface 205 may be provided; as well as a first negative interface 202, a second negative interface 204, and a third negative interface 206. There are six first connectors 300, one first connector 300 connected to the first positive interface 201, one first connector 300 connected to the first negative interface 202, one first connector 300 connected to the second positive interface 203, one first connector 300 connected to the second negative interface 204, one first connector 300 connected to the third positive interface 205, and one first connector 300 connected to the third negative interface 206. Thereby, the external battery pack is electrically connected to the electrical component 102.

[0051] In the embodiment of the present application, the PDU high-voltage box further includes a plurality of first copper bars 600, and each first connector 300 is connected to the electrical component 102 via a first copper bar 600. When there are six first connectors 300, there are six first copper bars 600.

[0052] In the related art, the connectors and copper bars of the PDU high-voltage box are often of different types, which greatly increases the cost. The number of copper bars and special-shaped copper bars is large, resulting in expensive finished products, complex structures, and many types of connectors during mass production. In the embodiment of the present application, the structures of the multiple first copper bars are the same, which is convenient for processing, thereby reducing production costs.

[0053] Please combine Figure 3 as well as Figure 8In some embodiments, the PDU high voltage box may further include a second connector 500, the second connector 500 is electrically connected to the electrical component 102 located in the PDU high voltage box, the second connector 500 is used to electrically connect to an external electrical component to electrically connect the battery pack to the external electrical component, and the first connector 300 and the second connector 500 have the same structure. In these embodiments, the first connector 300 and the second connector 500 have the same structure, and multiple connectors of the same specification are used, thereby reducing production costs.

[0054] Please combine Figure 3 , the second connector 500 may be at least partially located on the side of the third side wall 105 away from the first side wall 103, so that the second connector 500 and the first connector 300 are respectively located on opposite sides of the length direction of the cabinet 100. For the second connector 500, the structure of the second connector 500 may be the same as that of the first connector 300. Specifically, the second connector 500 may include a third connection end and a fourth connection end 503, the third connection end is at least partially disposed in the installation cavity 101 and connected to the electrical component 102, and a small portion of the fourth connection end 503 is located outside the cabinet 100 for connecting external electrical components. The extension direction of the fourth connection end 503 is the same as the arrangement direction of the second side wall 104 and the cabinet door 106, and the extension direction of the third connection end is perpendicular to the extension direction of the fourth connection end 503.

[0055] The first connector 300 and the cabinet 100 can be threadedly connected, and the second connector 500 and the cabinet 100 can be threadedly connected. Bolts of the same specification can be used to fix multiple first connectors 300 and the cabinet 100, and bolts of the same specification can be used to fix multiple second connectors 500 and the cabinet 100, thereby further reducing costs.

[0056] Furthermore, there may be a plurality of second connectors 500, and the plurality of second connectors 500 may be arranged along the height direction of the cabinet, and each second connector 500 is electrically connected to 102, so the structure is compact and the production cost is further reduced.

[0057] Please combine Fig. 9 as well as Fig.14 The external electrical component may include an external power source and an external load, wherein the external power source may include a positive power source interface, and the positive power source interface may specifically include a first positive power source interface 401, a second positive power source interface 403, a first negative power source interface 402, and a second negative power source interface 404. The external load may include multiple positive load interfaces, and the multiple positive load interfaces may specifically include a first positive load interface 405, a second positive load interface 407, a first negative load interface 406, and a second negative load interface 408.

[0058] There can be eight second connectors 500. For the convenience of description, the eight second connectors 500 are defined as: a first sub-connector 4010, a second sub-connector 4020, a third sub-connector 4030, a fourth sub-connector 4040, a fifth sub-connector 4050, a sixth sub-connector 4060, a seventh sub-connector 4070, and an eighth sub-connector 4080.

[0059] The first sub-connector 4010 is connected to the first positive power interface 401, the second sub-connector 4020 is connected to the first negative power interface 402, the third sub-connector 4030 is connected to the second positive power interface 403, the fourth sub-connector 4040 is connected to the second negative power interface 404, the fifth sub-connector 4050 is connected to the first positive load interface 405, the sixth sub-connector 4060 is connected to the first negative load interface 406, the seventh sub-connector 4070 is connected to the second positive load interface 407, and the eighth sub-connector 4080 is connected to the second negative load interface 408.

[0060] When in charging mode, the external power supply can be electrically connected to the electrical component 102 through the first positive power supply interface 401, the second positive power supply interface 403, the first negative power supply interface 402, and the second negative power supply interface 404, and further electrically connected to the battery pack, so that the external power supply can charge the battery pack through the PDU high-voltage box.

[0061] When in discharge mode, the external load can be electrically connected to the electrical component 102 through the first positive load interface 405, the second positive load interface 407, the first negative load interface 406, and the second negative load interface 408, and further electrically connected to the battery pack, so that the battery pack can power the external load through the PDU high-voltage box.

[0062] In the embodiment of the present application, a dual-charge and dual-discharge structural design is adopted, which can quickly charge the battery pack and quickly supply power to external loads. It can simultaneously support charging at two charging ports and discharging at two discharging ports, meet the needs of fast charging and discharging, improve charging efficiency and enhance user experience.

[0063] Please combine Fig.11 as well as Fig.14 The electrical component 102 may include a charging positive relay 1021 , a TMS relay 1022 , a TMS fuse 1023 , a pre-charging resistor 1024 , a pre-charging relay 1025 , a fuse 1026 , and an MSD 1027 mounted on the base plate 801 .

[0064] Please combine Fig.14In some embodiments, the battery pack is provided with a positive interface, the external electrical component includes a positive load interface, and the PDU high-voltage box also includes a first positive branch and a first positive discharge branch; one end of the first positive branch is connected to the positive interface, and the end of the first positive branch away from the positive terminal is connected to the first positive discharge branch; the other end of the first positive discharge branch is connected to the positive load interface.

[0065] In some embodiments, there are multiple positive interfaces, which may specifically include a first positive interface 201 , a second positive interface 203 , and a third positive interface 205 . The multiple positive interfaces are converged into a positive terminal 207 .

[0066] One end of the first positive branch 901 is connected to the positive terminal 207, and one end of the second positive branch 902 is connected to the positive terminal 207. One end of the first positive discharge branch 903 is connected to the end of the first positive branch 901 away from the positive terminal 207, and the other end of the first positive discharge branch 903 is connected to the first positive load interface 405; the first positive discharge branch 903 may not be provided with a relay, which can save costs. In contrast, a relay must be provided on the negative discharge branch 904 to avoid battery short circuit.

[0067] One end of the second positive discharge branch 905 is connected to the end of the second positive branch 902 away from the positive terminal 207, and the other end of the second positive discharge branch 905 is connected to the second positive load interface 407; the second positive discharge branch 905 may not be provided with a relay, which can save costs. Conversely, a relay must be provided on the negative discharge branch 904 to avoid battery short circuit.

[0068] It should be noted that in these embodiments, there is only one negative electrode discharge branch 904, which is equivalent to two discharge branches sharing one discharge negative electrode branch.

[0069] In some embodiments, a fuse 1121 may be provided on the first positive branch 901, and an MSD1027 may also be provided. Fuse 1121 and MSD1027 (Manual Service Disconnect) are connected in series. In these embodiments, when the BMS determines that the external power source meets the requirements (i.e., the voltage is within the required range and will not be too high), or when the BMS determines that the external load meets the requirements (i.e., the resistance will not be too small), the battery pack will be connected to the external electrical components. However, at this time, the external power source or external load may be damaged, resulting in the current flowing through the battery still exceeding the safety current of the battery pack. The setting of the fuse avoids battery damage caused by excessive current caused by such unexpected situations.

[0070] In some embodiments, a fuse 1121 may also be provided on the second positive branch 902, and MSD1027 may also be provided, and the fuse 1121 and MSD1027 (Manual Service Disconnect) are connected in series. When the BMS determines that the external power source meets the requirements (i.e., the voltage is within the required range and will not be too high), or when the BMS determines that the external load meets the requirements (i.e., the resistance will not be too small), the battery pack will be connected to the external electrical components. However, at this time, the external power source or external load may be damaged, resulting in the current flowing through the battery still exceeding the safety current of the battery pack. The setting of the fuse avoids battery damage caused by excessive current due to such unexpected situations.

[0071] The PDU high-voltage box also includes a first positive charging branch, and the external electrical component includes a positive power supply interface. One end of the first positive charging branch is connected to the first positive branch, and the other end of the first positive charging branch is connected to the positive power supply interface.

[0072] In some embodiments, one end of the first positive charging branch 907 is connected to the first positive branch 901, and the other end of the first positive charging branch 907 is connected to the first positive power interface 401. A charging positive relay may be provided on the first positive charging branch 907 to prevent the battery from being damaged by directly connecting to the battery when the voltage of the external power supply is too large.

[0073] One end of the second positive charging branch 906 is connected to the second positive branch 902, and the other end of the second positive charging branch 906 is connected to 403; the second positive charging branch 906 can also be provided with a charging positive relay to avoid directly connecting the battery to cause damage to the battery when the external power supply voltage is too large.

[0074] Please combine Fig.14 In some embodiments, the battery pack is provided with a plurality of negative interfaces, which may specifically include a first negative interface 202, a second negative interface 204, and a third negative interface 206, and the plurality of negative interfaces are merged into a negative terminal 208;

[0075] One end of the first negative charging branch 911 is connected to the negative terminal 208, and the other end of the first negative charging branch 911 is connected to the first negative power supply interface 402. A charging negative relay can be provided on the first negative charging branch 911 to avoid the situation where a large voltage damages the battery when the external charging power supply is connected in reverse (for example, when the positive pole of the external power supply is connected to the first negative power supply interface 402 and the second negative power supply interface 404).

[0076] One end of the second negative charging branch 912 is connected to the negative terminal 208, and the other end of the second negative charging branch 912 is connected to the second negative power supply interface 404. A charging negative relay can be provided on the second negative charging branch 912 to avoid the situation where a large voltage damages the battery when the external power supply is connected reversely (for example, the positive pole of the external power supply is connected to the first negative power supply interface 402 and the second negative power supply interface 404).

[0077] In some embodiments, the fuse 1026 and the pre-charging resistor 1024 are located at opposite ends of the bottom plate 801, and the fuse 1026 and the pre-charging resistor 1024 are arranged along the height direction of the cabinet 100, wherein two groups of positive charging relays 1021 are arranged in parallel and at intervals along the height direction of the cabinet 100, and are arranged along the length direction of the cabinet 100 with the pre-charging resistor 1024. Another two groups of positive charging relays 1021 are arranged in parallel and at intervals along the height direction of the cabinet 100, and are arranged along the length direction of the cabinet 100 with the fuse 1026. The pre-charging relay 1025 is located between the fuse 1026 and the pre-charging resistor 1024, and the TMS relay 1022 and the pre-charging relay 1025 are arranged along the length direction of the cabinet 100. In these embodiments, the electrical components 102 are neatly arranged and easy to assemble.

[0078] Please combine Fig.12 In some embodiments, the PDU high-voltage box further includes a plurality of second copper bars 700, and the second connector 500 is connected to the electrical component 102 through the second copper bars 700. Among the plurality of second copper bars 700, at least some of the second copper bars 700 have the same structure, so that the second copper bars 700 have better compatibility and can be applied to more places. In these embodiments, at least some of the second copper bars 700 have the same structure, which is convenient for processing, thereby reducing production costs.

[0079] Please combine Fig.10 , Fig.12 as well as Fig.14 In some embodiments, the external electrical component includes a first positive power interface 401 and a second positive power interface 403, and the plurality of second copper bars 700 include a first sub-copper bar 701 and a second sub-copper bar 703. The first sub-copper bar 701 is used to be electrically connected to the first positive power interface 401, and the second sub-copper bar 703 is used to be electrically connected to the second positive power interface 403. The first sub-copper bar 701 and the second sub-copper bar 703 have the same structure. Among them, a second connector 500 is connected to the electrical component 102 through a first sub-copper bar 701, and another second connector 500 is connected to the electrical component 102 through a second sub-copper bar 703.

[0080] Please combine Fig.10 , Fig.12 as well as Fig.14In some embodiments, the plurality of second copper bars 700 further include a third copper bar 705 and a fourth copper bar 707, the external electrical component includes a first negative power interface 402 and a second negative power interface 404, the third copper bar 705 is used to be electrically connected to the first negative power interface 402, the fourth copper bar 707 is used to be electrically connected to the second negative power interface 404, and the third copper bar 705 and the fourth copper bar 707 have the same structure. Among them, a second connector 500 is connected to the electrical component 102 through a third copper bar 705, and another second connector 500 is connected to the electrical component 102 through a fourth copper bar 707.

[0081] Please combine Fig.10 , Fig.12 as well as Fig.14 In some embodiments, the external electrical component includes a first positive power interface 401 and a second positive power interface 403, and the plurality of second copper bars 700 include a first sub-copper bar 701 and a second sub-copper bar 703, the first sub-copper bar 701 is used to be electrically connected to the first positive power interface 401, the second sub-copper bar 703 is used to be electrically connected to the second positive power interface 403, and the first sub-copper bar 701 and the second sub-copper bar 703 have the same structure. At the same time, the external electrical component includes a first positive power interface 401 and a second positive power interface 403, and the plurality of second copper bars 700 include a first sub-copper bar 701 and a second sub-copper bar 703, the first sub-copper bar 701 is used to be electrically connected to the first positive power interface 401, the second sub-copper bar 703 is used to be electrically connected to the second positive power interface 403, and the first sub-copper bar 701 and the second sub-copper bar 703 have the same structure. Among them, a second connector 500 is connected to the electrical component 102 through a first copper sub-bar 701, and another second connector 500 is connected to the electrical component 102 through a second copper sub-bar 703. A second connector 500 is connected to the electrical component 102 through a third copper sub-bar 705, and another second connector 500 is connected to the electrical component 102 through a fourth copper sub-bar 707.

[0082] Please combine Fig.13 In some embodiments, the PDU high-voltage box also includes a bracket 803 and a base plate 801 arranged in the installation cavity 101, the base plate 801 is arranged close to the second side wall 104, the electrical component 102 is installed on the side of the base plate 801 away from the second side wall 104, the bracket 803 is installed between the base plate 801 and the second side wall 104, one end of the bracket 803 is connected to the first side wall 103, and the opposite end is connected to the third side wall 105.

[0083] The bracket 803 may be in the shape of a long strip, and its extension direction is from the first side wall 103 to the third side wall 105 , and has strong anti-seismic capability and uniform force. The bracket 803 may be screwed to the bottom plate 801 , and welded to the third side wall 105 .

[0084] In some embodiments, along a direction perpendicular to the second sidewall 104, the cross-section of the bracket 803 may be in a "ji" shape. The bracket 803 may include a first part 8031, two second parts 8033, and two third parts 8035. The first part 8031 is disposed close to the bottom plate 801. The two third parts 8035 are disposed close to the second sidewall 104 and are connected to both sides of the first part. The second parts 8033 are disposed between the first part and the third parts. One second part 8033 is used to connect the first part and one third part 8035. The first part and the bottom plate 801 are connected by screwing or riveting or welding. Both of the two third parts 8035 may be welded to the second sidewall 104 to enhance the connection strength between the bracket 803 and the second sidewall 104, so that the cabinet 100 is uniformly stressed during vibration deformation.

[0085] In a second aspect, the present application further provides a vehicle, which includes a battery pack and a PDU high-voltage box according to any one of the above embodiments. The second connection end extends toward the side close to the battery pack for connecting the battery pack to electrically connect the battery pack and the electrical components.

[0086] In this vehicle, the PDU high-voltage box and the battery pack may be arranged along the Z-axis of the vehicle, and the PDU high-voltage box may be located above the battery pack. The space occupied in the X and Y directions of the vehicle can be reduced.

[0087] In the vehicle provided by the embodiments of the present application, the second connection end 303 of the first connector 300 extends toward the side close to the battery pack. The distance between the battery pack and the second connection end 303 is short, and the wiring distance between the battery pack and the second connection end 303 is short. When the PDU high-voltage box and the battery pack are arranged along the Z-axis of the vehicle and the PDU high-voltage box is located above the battery pack, the second connection end 303 of the first connector 300 extends toward the position of the lower battery pack, which is convenient for wiring and routing, and the wiring distance is short. There are multiple first connectors, and multiple connectors of the same specification are used, thereby reducing the production cost. Further, the first connector 300 and the second connector 500 have the same structure, further reducing the production cost. Further, the second connector 500 is also provided in multiple numbers, further reducing the production cost. In the vehicle provided by the embodiments of the present application, the copper busbars are compatible, easy to process, and have a stable structure. The structures of multiple first copper busbars are the same, at least part of the structures of the second copper busbars 700 are the same, the structures of the first sub-copper busbar 701 and the second sub-copper busbar 703 are the same, and the structures of the third sub-copper busbar 705 and the fourth sub-copper busbar 707 are the same. The PDU high-voltage box provided by the embodiments of the present application can perform dual charging and dual discharging.

[0088] The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A PDU high voltage box, characterized in that: include: The cabinet is provided with a mounting cavity; An electrical component, located in the mounting cavity; A first connector, comprising a first connection end and a second connection end connected to each other, wherein at least a portion of the first connection end is disposed in the mounting cavity and connected to the electrical component, and at least a portion of the second connection end is located outside the cabinet and is used to connect to a battery pack; Wherein, the second connecting end extends toward a side close to the battery pack.

2. The PDU high voltage box according to claim 1, characterized in that: The cabinet body includes a first side wall, a second side wall, a third side wall and a cabinet door. The first side wall, the second side wall and the third side wall are connected in sequence to form the installation cavity. The first side wall is arranged opposite to the third side wall, and the second side wall is arranged opposite to the cabinet door. The battery pack is arranged on the side of the second side wall away from the cabinet door. The second connection end is located on the side of the first side wall away from the third side wall, and the extension direction of the second connection end is the same as the arrangement direction of the second side wall and the cabinet door.

3. The PDU high voltage box according to claim 2, characterized in that: An extending direction of the first connecting end is perpendicular to an extending direction of the second connecting end.

4. The PDU high voltage box according to claim 1, characterized in that: There are multiple first connectors, and the PDU high-voltage box is electrically connected to the multiple battery packs through the multiple first connectors.

5. The PDU high voltage box according to claim 1, characterized in that: The PDU high-voltage box also includes a second connector, which is electrically connected to the electrical component. The second connector is used to electrically connect to an external electrical component to electrically connect the battery pack to the external electrical component. The first connector and the second connector have the same structure.

6. The PDU high voltage box according to claim 5, characterized in that: The PDU high-voltage box also includes a plurality of first copper bars, and each of the first connectors is connected to the electrical component via a first copper bar.

7. The PDU high voltage box according to claim 6, characterized in that: It also includes a plurality of second copper bars, through which the second connector is connected to the electrical component, and among the plurality of second copper bars, at least some of the second copper bars have the same structure.

8. The PDU high voltage box according to claim 7, characterized in that: The external electrical component includes a first positive power interface and a second positive power interface, the plurality of second copper bars include a first sub-copper bar and a second sub-copper bar, the first sub-copper bar is used to be electrically connected to the first positive power interface, the second sub-copper bar is used to be electrically connected to the second positive power interface, and the first sub-copper bar has the same structure as the second sub-copper bar; and / or The plurality of second copper bars further include a third sub-copper bar and a fourth sub-copper bar, the external electrical component includes a first negative power supply interface and a second negative power supply interface, the third sub-copper bar is used to be electrically connected to the first negative power supply interface, the fourth sub-copper bar is used to be electrically connected to the second negative power supply interface, and the third sub-copper bar has the same structure as the fourth sub-copper bar.

9. The PDU high voltage box according to claim 2, characterized in that: The PDU high-voltage box also includes a bracket and a base plate arranged in the installation cavity, the base plate is arranged close to the second side wall, the electrical component is installed on the side of the base plate facing away from the second side wall, the bracket is installed between the base plate and the second side wall, one end of the bracket is connected to the first side wall, and the opposite end is connected to the third side wall.

10. The PDU high-voltage box according to any one of claims 1 to 9, characterized in that: The battery pack is provided with a positive interface, the external electrical component includes a positive load interface, and the PDU high-voltage box also includes a first positive branch and a first positive discharge branch; one end of the first positive branch is connected to the positive interface, and the end of the first positive branch facing away from the positive interface is connected to the first positive discharge branch; the other end of the first positive discharge branch is connected to the positive load interface.

11. The PDU high voltage box according to claim 10, characterized in that: The PDU high-voltage box also includes a first positive charging branch, and the external electrical component includes a positive power supply interface. One end of the first positive charging branch is connected to the first positive branch, and the other end of the first positive charging branch is connected to the positive power supply interface.

12. The PDU high voltage box according to claim 10, characterized in that: The electrical component includes a fuse, which is arranged in the first positive branch.

13. The PDU high voltage box according to claim 11, characterized in that: The electrical component includes a relay, and the relay is arranged in the first positive charging branch.

14. A vehicle, characterized in that: It comprises a battery pack and a PDU high-voltage box as described in any one of claims 1 to 13, wherein the second connection end extends toward a side close to the battery pack and is used to connect the battery pack to electrically connect the battery pack and the electrical component.

15. The vehicle according to claim 14, characterized in that The PDU high-voltage box and the battery pack are arranged in the Z direction of the vehicle.

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