Automobile expansion electric appliance box and new energy automobile

Abstract

The utility model provides an automobile expansion electric appliance box and a new energy automobile. An electric cavity and an expansion cavity are arranged in the electric appliance box; an electrical element and a PCB (Printed Circuit Board) are arranged in the electrical cavity; one or more independent mounting cavities are formed in the expansion cavity; a waterproof structure is arranged in each mounting cavity or a waterproof structure is arranged in the extension cavity; a wiring terminal or a safety terminal is arranged in the mounting cavity; a clamping structure is arranged on the outer wall of the shell of the wiring terminal or the safety terminal; the wiring terminal or the safety terminal is clamped in the expansion cavity through a clamping structure, and the wiring terminal or the safety terminal is limited to move in the expansion cavity; a groove is formed in the side wall of the electric appliance box and located on one side of the expansion cavity, and the groove is of a through groove structure in the vertical direction of the electric appliance box. A mounting seat is also arranged on the side wall of the electric appliance box; according to the technical scheme provided by the utility model, an existing electric appliance box can be used for development, brand new development of the electric appliance box is avoided, the cost of a bicycle is saved, the development period is shortened, and the electric appliance box can be universalized.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile expansion electrical box, and in particular relates to an automobile expansion electrical box and a new energy automobile. Background Art

[0002] The automotive electrical box emerged with the development of vehicle electrical appliances. It is used to realize power switching and ensure vehicle safety through protection equipment. The electrical box is the carrier of power transmission, which realizes the control of large current by small current through relays and realizes overvoltage and overcurrent protection of the circuit through fuses.

[0003] With the increase of existing automobile configuration functions, the number, type and power level of fuses on the existing universal front cabin electrical box do not meet the functional configuration requirements of the vehicle model.

[0004] Based on the technical problems existing in the above-mentioned automotive electrical box, there is no relevant solution yet; therefore, it is urgent to find an effective solution to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the utility model is to address the deficiencies in the above-mentioned technologies and to propose an automobile expansion electrical box and a new energy vehicle, aiming to solve the problem that the existing automobile electrical boxes cannot meet the functional configuration requirements.

[0006] The utility model provides an automobile expansion electrical box, wherein an electrical cavity and an expansion cavity are provided in the electrical box, and the expansion cavity and the electrical cavity are independent cavities respectively; electrical components and a PCB board are installed in the electrical cavity; one or more independent installation cavities are provided in the expansion cavity; each installation cavity is provided with a waterproof structure or the expansion cavity is provided with a waterproof structure; a wiring terminal or a fuse terminal is provided in the installation cavity; a clamping structure is provided on the outer wall of the shell of the wiring terminal or the fuse terminal; the wiring terminal or the fuse terminal is clamped in the expansion cavity through the clamping structure, and the movement of the wiring terminal or the fuse terminal in the expansion cavity is restricted; the wiring terminal or the fuse terminal is also electrically connected to the electrical component; a groove is formed on the side wall of the electrical box at one side of the expansion cavity, and the groove is a through groove structure along the vertical direction of the electrical box; a mounting seat is also provided on the side wall of the electrical box.

[0007] Furthermore, a wiring terminal is provided in the installation cavity, and the wiring terminal includes a first wiring terminal and a second wiring terminal; a first installation cavity and a second installation cavity are provided in the expansion cavity; the first wiring terminal is clamped in the first installation cavity along the horizontal direction of the expansion cavity; and the second wiring terminal is clamped in the second installation cavity along the longitudinal direction of the expansion cavity.

[0008] Further, the first wiring terminal includes a first wiring housing, in which a plurality of power terminals are arranged; a clamping strip is respectively arranged on the left and right side walls of the first wiring housing, and a first protrusion is respectively arranged on the front and rear side walls of the first wiring housing; the first wiring terminal is respectively clamped on the left and right side walls in the first installation cavity through the clamping strip, and the first wiring terminal is restricted from moving in the horizontal X direction in the extension cavity; the first wiring terminal is respectively clamped on the front and rear side walls in the first installation cavity through the first protrusion, and the first wiring terminal is restricted from moving in the vertical direction in the extension cavity.

[0009] Furthermore, first card slots are respectively provided on the front and rear side walls of the first wiring housing, and the two first card slots are symmetrically arranged on the front and rear side walls of the first wiring housing along the vertical direction; two first protrusions are symmetrically arranged on the outsides of the two first card slots; a sink groove is also provided on the first protrusion; the first wiring terminal is connected to the front and rear side walls in the first installation cavity through the first card slot, and limits the first wiring terminal from moving along the horizontal Y direction in the expansion cavity.

[0010] Further, the second wiring terminal includes a second wiring housing, in which a plurality of power terminals are arranged; second protrusions are respectively arranged on the left and right side walls of the second wiring housing, and a second slot is arranged on the bottom surface of the second wiring housing; the second wiring terminal is respectively clamped on the left and right side walls in the second mounting cavity through the second protrusions, and the second wiring terminal is restricted from moving in the vertical direction in the extension cavity; the second wiring terminal is respectively clamped on the bottom surface of the second mounting cavity through the second slot, and the second wiring terminal is restricted from moving in the horizontal X direction in the extension cavity.

[0011] Furthermore, a fuse terminal is provided in the installation cavity, and the fuse terminal includes a first fuse terminal and a second fuse terminal; a first installation cavity and a second installation cavity are provided in the expansion cavity; the first fuse terminal is clamped in the first installation cavity along the horizontal direction of the expansion cavity; and the second fuse terminal is clamped in the second installation cavity along the longitudinal direction of the expansion cavity.

[0012] Further, the first insurance terminal includes a first base and a first pedestal; the first base is arranged at the bottom of the first base and is integrally formed with the first base; the horizontal cross-section of the first base is smaller than the horizontal cross-section of the first base; the first insurance terminal can be clamped on the bottom surface of the first mounting cavity through the first base, and limit the first insurance terminal to move in the horizontal direction; a third clamping groove is provided in the middle position of the front side surface of the first base, and the third clamping groove is a through groove structure along the vertical direction of the first base, and a clamping block is provided in the third clamping groove; the first insurance terminal is clamped on the front side surface of the first mounting cavity through the third clamping groove, and the clamping block is clamped in the front side surface of the first mounting cavity, thereby limiting the first insurance terminal to move in the vertical direction; the front side surface of the first base is symmetrically provided with limit grooves on both sides of the third clamping groove, and the limit grooves are located at the connection between the first base and the first base; the first insurance terminal is clamped on the limit block on the front side surface of the first mounting cavity through the limit groove, and limits the first insurance terminal to move in the horizontal Y direction in the extension cavity.

[0013] Further, the second fuse terminal includes a second base and a second base; the second base is arranged at the bottom of the second base and is integrally formed with the second base; the horizontal cross-section of the second base is smaller than the horizontal cross-section of the second base; the second fuse terminal can be clamped on the bottom surface of the second mounting cavity through the second base, and the second fuse terminal is limited to move in the horizontal direction; a fourth clamping groove is provided in the middle position of the left side of the second base, a limit block is provided in the fourth clamping groove, and the fourth clamping groove is a through groove structure along the vertical direction of the second fuse terminal; concave grooves are respectively provided on both sides of the fourth clamping groove on the left side of the second base; an elastic positioning block is provided in the middle position of the right side of the second base, and a positioning groove is provided on the elastic positioning block; the second fuse terminal is clamped on the left side wall of the second mounting cavity through the fourth clamping groove, and the limit block is clamped on the left side wall of the second mounting cavity, thereby limiting the second fuse terminal from moving in the horizontal X direction and the vertical direction in the extension cavity; the second fuse terminal is clamped on the left side wall of the second mounting cavity through the concave groove; the second fuse terminal cooperates with the slot of the right side wall of the second mounting cavity through the elastic positioning block, and the positioning slot is clamped with the plug in the slot.

[0014] Furthermore, both sides of the lower end of the left side surface of the second base are respectively provided with clamping grooves; the second fuse terminal is clamped with the bottom groove of the left side wall of the second installation cavity through the clamping grooves.

[0015] Correspondingly, the utility model also provides a new energy vehicle, comprising a front cabin electrical box, wherein the front cabin electrical box is the above-mentioned vehicle expansion electrical box.

[0016] The technical solution provided by the utility model can be developed using the existing electrical box, avoiding the need for completely new development of the electrical box, saving bicycle costs, shortening the development cycle, and the electrical box can be universalized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] The utility model will be further described below in conjunction with the accompanying drawings:

[0019] Figure 1 This is an overall schematic diagram of a first embodiment of an automobile expansion electrical box of the utility model;

[0020] Figure 2 For this utility model Figure 1 Partial schematic diagram;

[0021] Figure 3 This is a schematic diagram of the structure of the first wiring terminal of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the second wiring terminal of the utility model;

[0023] Figure 5 This is an overall schematic diagram of a second embodiment of an automobile expansion electrical box of the utility model;

[0024] Figure 6 For this utility model Figure 5 Partial schematic diagram;

[0025] Figure 7 This is a schematic diagram of the structure of the first fuse terminal of the utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the second fuse terminal of the utility model;

[0027] Fig. 9 This is a circuit schematic diagram of the first fuse terminal and the second fuse terminal of the utility model.

[0028] In the figure: 1, electrical box; 11, mounting base; 12, groove; 13, expansion cavity; 2, first wiring terminal; 21, first wiring housing; 22, first protrusion; 23, clamping strip; 24, first clamping slot; 25, first power terminal; 26, second power terminal; 27, third power terminal; 28, fourth power terminal; 3, second wiring terminal; 31, second wiring housing; 32, second protrusion; 33, second clamping slot; 34, rotating Angle groove; 35, fifth power-on terminal; 36, sixth power-on terminal; 37, seventh power-on terminal; 4, first fuse terminal; 41, first base; 42, first pedestal; 43, limiting groove; 44, third clamping groove; 45, clamping block; 5, second fuse terminal; 51, second base; 52, second pedestal; 53, concave groove; 54, fourth clamping groove; 55, limiting block; 56, clamping groove; 57, elastic positioning block; 58, positioning groove. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] As shown in Figure 1 to Figure 8As shown, the utility model provides an automobile expansion electrical box, wherein the electrical box 1 is provided with an electrical cavity and an expansion cavity 13, and the expansion cavity 13 and the electrical cavity are independent cavities respectively; further, electrical components and PCB boards are installed in the electrical cavity; further, one or more independent installation cavities are provided in the expansion cavity 13; each installation cavity is provided with a waterproof structure respectively or the expansion cavity 13 is provided with a waterproof structure as a whole, so that non-waterproof plug-ins (such as wiring terminals or insurance terminals) can be used to save costs; further, wiring terminals (i.e. inline) or insurance terminals are provided in the installation cavity, and a clamping structure is provided on the outer wall of the housing of the wiring terminals or insurance terminals; specifically, the wiring terminals or insurance terminals are clamped in the expansion cavity 13 through their clamping structure, and the movement of the wiring terminals or insurance terminals in the expansion cavity 13 is restricted; further, the wiring terminals Or the fuse terminal is also electrically connected to the electrical component and can be electrically connected to the external wiring harness; further, a groove 12 is formed on the side wall of the electrical box 1 on one side of the expansion cavity 13, and the groove 12 is a through groove structure along the vertical direction of the electrical box 1, so that it can form an avoidance when the electrical box 1 is installed, and the groove 12 can be effectively clamped, thereby ensuring that the wiring terminals or fuse terminals in the expansion cavity 13 are convenient and stable to disassemble and assemble; further, a mounting seat 11 is also provided on the side wall of the electrical box 1, and a mounting hole is provided on the mounting seat 11, and the electrical box 1 can be installed through the mounting seat 11; the automotive expansion electrical box provided by the utility model forms an expansion structure by pre-setting in the electrical box, so that the power supply requirements of the entire vehicle's electrical load can be met, and the newly developed configuration functions of the automobile can be met, and its structural design is reasonable and practical, which can reduce the development cost of the automobile.

[0035] Preferably, in combination with the above scheme, as shown in Figures 1 to Figure 4 As shown, a wiring terminal is provided in the installation cavity, and the wiring terminal includes a first wiring terminal 2 and a second wiring terminal 3; a first installation cavity and a second installation cavity are provided in the extension cavity 13; the first wiring terminal 2 is clamped in the first installation cavity along the horizontal direction of the extension cavity 13; the second wiring terminal 3 is clamped in the second installation cavity along the longitudinal direction of the extension cavity 13; the electrical box 1 is a front cabin electrical box, which is a universal product with a hard-wired structure. Two pairs of wiring terminals for connecting the front cabin wiring harness and the engine wiring harness are arranged in the extension cavity 13 of the front cabin electrical box. Since a waterproof structure is adopted in the extension cavity 13, a non-waterproof plug-in can be adopted to save costs; specifically, the waterproof structure can be waterproof by designing a silicone layer, which forms a decompression fit with the wiring terminal; the waterproof structure can also adopt waterproof glue, that is, it is bonded to the wiring terminal by waterproof glue.

[0036] Preferably, in combination with the above scheme, as shown in Figures 1 to Figure 4As shown, the first wiring terminal 2 includes a first wiring housing 21, and a plurality of power terminals are arranged in the first wiring housing 21; further, a clamping strip 23 is respectively arranged on the left and right side walls of the first wiring housing 21, and a first protrusion 22 is respectively arranged on the front and rear side walls of the first wiring housing 21; specifically, the first wiring terminal 2 is respectively clamped on the left and right side walls in the first installation cavity through the clamping strip 23, and the first wiring terminal 2 is restricted from moving in the horizontal X direction in the expansion cavity 13; further, the first wiring terminal 2 is respectively clamped on the front and rear side walls in the first installation cavity through the first protrusion 22, and the first wiring terminal 2 is restricted from moving in the vertical direction in the expansion cavity 13.

[0037] Preferably, in combination with the above scheme, as shown in Figures 1 to Figure 4 As shown, first card slots 24 are respectively provided on the front and rear side walls of the first wiring housing 21, and the two first card slots 24 are symmetrically arranged on the front and rear side walls of the first wiring housing 21 along the vertical direction; specifically, two first protrusions 22 are symmetrically arranged on the outer sides of the two first card slots 24; a sink groove is also provided on the first protrusion 22; the first terminal 2 is clamped on the front and rear side walls in the first installation cavity through the first card slots 24, and the first terminal 2 is restricted from moving in the horizontal Y direction in the expansion cavity 13.

[0038] Preferably, in combination with the above scheme, as shown in Figures 1 to Figure 4 As shown, the second wiring terminal 3 includes a second wiring housing 31, and a plurality of power terminals are arranged in the second wiring housing 31; further, second protrusions 32 are respectively arranged on the left and right side walls of the second wiring housing 31, and a second clamping groove 33 is arranged on the bottom surface of the second wiring housing 31; specifically, the second wiring terminal 3 is respectively clamped on the left and right side walls in the second installation cavity through the second protrusions 32, and the second wiring terminal 3 is restricted from moving in the vertical direction in the extension cavity 13; the second wiring terminal 3 is respectively clamped on the bottom surface of the second installation cavity through the second clamping groove 33, and the second wiring terminal 3 is restricted from moving in the horizontal X direction in the extension cavity 13.

[0039] Preferably, in combination with the above scheme, as shown in Figures 2 to Figure 8 As shown, a fuse terminal (including four mini and four MCASE) is provided in the installation cavity, and the fuse terminal includes a first fuse terminal 4 and a second fuse terminal 5; accordingly, a first installation cavity and a second installation cavity are provided in the extension cavity 13; specifically, the first fuse terminal 4 is clamped in the first installation cavity along the horizontal direction of the extension cavity 13; the second fuse terminal 5 is clamped in the second installation cavity along the longitudinal direction of the extension cavity 13; the above installation method can reasonably utilize the limited installation space.

[0040] Preferably, in combination with the above scheme, as shown in Figures 2 to Figure 8As shown, the first insurance terminal 4 includes a first base 41 and a first base 42; the first base 41 is arranged at the bottom of the first base 42 and is integrally formed with the first base 42; the horizontal cross-section of the first base 41 is smaller than the horizontal cross-section of the first base 42; specifically, the first insurance terminal 4 can be clamped on the bottom surface of the first installation cavity through the first base 41, and the first insurance terminal 4 is restricted from moving in the horizontal direction; a third clamping groove 44 is provided in the middle position of the front side surface of the first base 42, and the third clamping groove 44 is a through groove structure along the vertical direction of the first base 42, and a clamping block 45 is provided in the third clamping groove 44. ; Further, the first fuse terminal 4 is clamped on the front side of the first mounting cavity through the third clamping groove 44, and the clamping block 45 is clamped in the front side of the first mounting cavity, thereby limiting the movement of the first fuse terminal 4 in the vertical direction; Further, the front side of the first base 42 is symmetrically provided with limit grooves 43 on both sides of the third clamping groove 44, and the limit grooves 43 are located at the connection between the first base 41 and the first base 42; The first fuse terminal 4 is clamped on the limit block on the front side of the first mounting cavity through the limit groove 43, and limits the first fuse terminal 4 from moving in the horizontal Y direction in the expansion cavity 13.

[0041] Preferably, in combination with the above scheme, as shown in Figures 2 to Figure 8 As shown, the second insurance terminal 5 includes a second base 51 and a second base 52; further, the second base 51 is arranged at the bottom of the second base 52 and is integrally formed with the second base 52; further, the horizontal cross-section of the second base 51 is smaller than the horizontal cross-section of the second base 52; specifically, the second insurance terminal 5 can be clamped on the bottom surface of the second installation cavity through the second base 51, and the second insurance terminal 5 is restricted from moving in the horizontal direction; further, a fourth card slot 54 is provided in the middle position of the left side of the second base 52, and a limit block 55 is provided in the fourth card slot 54, and the fourth card slot 54 is a through-slot structure along the vertical direction of the second insurance terminal 5; the left side of the second base 52 is located at the fourth card slot 54. Concave grooves 53 are respectively provided on both sides of the four card slots 54; further, an elastic positioning block 57 is provided in the middle position of the right side of the second base 52, and a positioning groove 58 is provided on the elastic positioning block 57; the second fuse terminal 5 is clamped on the left side wall of the second installation cavity through the fourth card slot 54, and the limit block 55 is clamped on the left side wall of the second installation cavity, thereby limiting the second fuse terminal 5 from moving along the horizontal X direction and the vertical direction in the extension cavity 13; further, the second fuse terminal 5 is clamped on the left side wall of the second installation cavity through the concave groove 53; the second fuse terminal 5 cooperates with the slot on the right side wall of the second installation cavity through the elastic positioning block 57, and the positioning groove 58 is clamped with the plug in the slot.

[0042] Preferably, in combination with the above scheme, as shown in Figures 2 to Figure 8As shown, the lower ends of the left side of the second base 51 are provided with clamping grooves 56 on both sides; the second fuse terminal 5 is clamped with the bottom groove of the left side wall of the second installation cavity through the clamping groove 56; the solution provided by the utility model is to develop an extended electrical box 1 in a limited space, expand the use of the electrical box, and arrange two fuse terminals (four mini and four MCASE). In this way, eight fuses are added to the whole vehicle, which increases the types and quantity of fuses in disguise, and solves the power level problem (such as Figure 3 ), to meet the power distribution needs of the entire vehicle, and then meet the functional requirements of the project.

[0043] Accordingly, in combination with the above scheme, as shown in Figures 1 to Figure 8 As shown, the utility model also provides a new energy vehicle, including a front cabin electrical box, and the front cabin electrical box is the above-mentioned vehicle expansion electrical box.

[0044] The technical solution provided by the utility model can be developed using the existing electrical box, avoiding the need for completely new development of the electrical box, saving bicycle costs, shortening the development cycle, and the electrical box can be universalized.

[0045] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the above-mentioned technical content without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the utility model without departing from the content of the technical solution of the utility model shall fall within the protection scope of the technical solution of the utility model.

Claims

1. An automotive expansion electrical box, characterized in that: The electrical box (1) is provided with an electrical cavity and an expansion cavity (13), wherein the expansion cavity (13) and the electrical cavity are independent cavities; electrical components and a PCB board are installed in the electrical cavity; one or more independent installation cavities are provided in the expansion cavity (13); a waterproof structure is provided in each installation cavity or the expansion cavity (13) is provided with a waterproof structure; a wiring terminal or a fuse terminal is provided in the installation cavity; a clamping structure is provided on the outer wall of the shell of the wiring terminal or the fuse terminal; the wiring terminal or the fuse terminal is clamped in the expansion cavity (13) through the clamping structure, and the movement of the wiring terminal or the fuse terminal in the expansion cavity (13) is restricted; the wiring terminal or the fuse terminal is also electrically connected to the electrical component; a groove (12) is formed on the side wall of the electrical box (1) at one side of the expansion cavity (13), and the groove (12) is a through groove structure along the vertical direction of the electrical box (1); and a mounting seat (11) is also provided on the side wall of the electrical box (1).

2. The vehicle expansion electrical box according to claim 1, characterized in that: The installation cavity is provided with connection terminals, the connection terminals comprising a first connection terminal (2) and a second connection terminal (3); the expansion cavity (13) is provided with a first installation cavity and a second installation cavity; the first connection terminal (2) is clamped in the first installation cavity along the transverse direction of the expansion cavity (13); the second connection terminal (3) is clamped in the second installation cavity along the longitudinal direction of the expansion cavity (13).

3. The automobile expansion electrical box according to claim 2, characterized in that: The first wiring terminal (2) comprises a first wiring housing (21), wherein a plurality of power terminals are arranged in the first wiring housing (21); a clamping strip (23) is respectively arranged on the left and right side walls of the first wiring housing (21), and a first protrusion (22) is respectively arranged on the front and rear side walls of the first wiring housing (21); the first wiring terminal (2) is respectively clamped on the left and right side walls in the first installation cavity through the clamping strip (23), and the first wiring terminal (2) is restricted from moving in the horizontal X direction in the expansion cavity (13); the first wiring terminal (2) is respectively clamped on the front and rear side walls in the first installation cavity through the first protrusion (22), and the first wiring terminal (2) is restricted from moving in the vertical direction in the expansion cavity (13).

4. The automobile expansion electrical box according to claim 3, characterized in that: The first wiring housing (21) is also provided with first clamping grooves (24) on the front and rear side walls, respectively; the two first clamping grooves (24) are symmetrically arranged on the front and rear side walls of the first wiring housing (21) in a vertical direction; the two first protrusions (22) are symmetrically arranged on the outsides of the two first clamping grooves (24); the first protrusions (22) are also provided with sink grooves; the first wiring terminal (2) is clamped on the front and rear side walls in the first installation cavity through the first clamping grooves (24), and the first wiring terminal (2) is restricted from moving in the horizontal Y direction in the expansion cavity (13).

5. The automobile expansion electrical box according to claim 2, characterized in that: The second wiring terminal (3) comprises a second wiring housing (31), wherein a plurality of power terminals are arranged in the second wiring housing (31); second protrusions (32) are respectively arranged on the left and right side walls of the second wiring housing (31), and a second clamping groove (33) is arranged on the bottom surface of the second wiring housing (31); the second wiring terminal (3) is respectively clamped on the left and right side walls of the second installation cavity through the second protrusions (32), and the second wiring terminal (3) is restricted from moving in the vertical direction in the expansion cavity (13); the second wiring terminal (3) is respectively clamped on the bottom surface of the second installation cavity through the second clamping groove (33), and the second wiring terminal (3) is restricted from moving in the horizontal X direction in the expansion cavity (13).

6. The automobile expansion electrical box according to claim 1, characterized in that: A fuse terminal is provided in the installation cavity, the fuse terminal comprising a first fuse terminal (4) and a second fuse terminal (5); a first installation cavity and a second installation cavity are provided in the expansion cavity (13); the first fuse terminal (4) is clamped in the first installation cavity along the transverse direction of the expansion cavity (13); and the second fuse terminal (5) is clamped in the second installation cavity along the longitudinal direction of the expansion cavity (13).

7. The automobile expansion electrical box according to claim 6, characterized in that: The first fuse terminal (4) comprises a first base (41) and a first pedestal (42); the first base (41) is arranged at the bottom of the first base (42) and is integrally formed with the first base (42); the horizontal cross-section of the first base (41) is smaller than the horizontal cross-section of the first base (42); the first fuse terminal (4) can be clamped on the bottom surface of the first installation cavity through the first base (41) and restrict the first fuse terminal (4) from moving in the horizontal direction; a third clamping groove (44) is provided in the middle position of the front side surface of the first base (42); the third clamping groove (44) is a through groove structure along the vertical direction of the first base (42), and a clamping block ( 45); the first fuse terminal (4) is clamped on the front side of the first installation cavity through the third clamping groove (44), and the clamping block (45) is clamped in the front side of the first installation cavity, thereby limiting the first fuse terminal (4) from moving in the vertical direction; the front side of the first base (42) is symmetrically provided with limiting grooves (43) on both sides of the third clamping groove (44), and the limiting grooves (43) are located at the connection between the first base (41) and the first base (42); the first fuse terminal (4) is clamped on the limiting block on the front side of the first installation cavity through the limiting groove (43), and the first fuse terminal (4) is limited to move in the horizontal Y direction in the expansion cavity (13).

8. The automobile expansion electrical box according to claim 6, characterized in that: The second fuse terminal (5) comprises a second base (51) and a second pedestal (52); the second base (51) is arranged at the bottom of the second base (52) and is integrally formed with the second base (52); the horizontal cross-section of the second base (51) is smaller than the horizontal cross-section of the second base (52); the second fuse terminal (5) can be clamped on the bottom surface of the second mounting cavity through the second base (51) and restrict the second fuse terminal (5) from moving in the horizontal direction; a fourth clamping groove (54) is provided in the middle of the left side of the second base (52), a limiting block (55) is provided in the fourth clamping groove (54), and the fourth clamping groove (54) is a through-groove structure along the vertical direction of the second fuse terminal (5); a stopper (55) is provided in the fourth clamping groove (54) on the left side of the second base (52) The second base (52) is provided with a resilient positioning block (57) at the middle position of the right side of the second base (52), and the resilient positioning block (57) is provided with a positioning groove (58); the second fuse terminal (5) is clamped on the left side wall of the second installation cavity through the fourth clamping groove (54), and the limit block (55) is clamped on the left side wall of the second installation cavity, so as to limit the movement of the second fuse terminal (5) along the horizontal X direction and the vertical direction in the expansion cavity (13); the second fuse terminal (5) is clamped on the left side wall of the second installation cavity through the resilient positioning block (57); the second fuse terminal (5) cooperates with the slot of the right side wall of the second installation cavity through the resilient positioning block (57), and the positioning groove (58) is clamped with the plug block in the slot.

9. The automobile expansion electrical box according to claim 8, characterized in that: The lower end of the left side surface of the second base (51) is provided with latching grooves (56) on both sides respectively; the second fuse terminal (5) is latched with the bottom groove of the left side wall of the second installation cavity through the latching grooves (56).

10. A new energy vehicle, comprising a front cabin electrical box, characterized in that: The front cabin electrical box is the automotive expansion electrical box as described in any one of claims 1 to 9 above.

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