Interconnection distribution box and parent-child transport vehicle

Abstract

This utility model belongs to the field of vehicle technology and discloses an interconnected power distribution box and a mother-daughter transport vehicle. The interconnected power distribution box has an insulated distribution box with a mounting cavity. The lead group includes a first positive lead and a first negative lead. The first end of the first positive lead and the first end of the first negative lead both pass through the insulated power distribution box and are located within the mounting cavity. A charging plug and an electrical connector are both integrated into the insulated power distribution box. At least the plug-in end of the charging plug is exposed outside the insulated power distribution box, and the electrical connector includes a female end, at least the plug-in end of the female end is exposed outside the insulated power distribution box. The positive terminal of the charging plug and the positive terminal of the female end are both electrically connected to the first end of the first positive lead, and the negative terminal of the charging plug and the negative terminal of the female end are both electrically connected to the first end of the first negative lead. This interconnected power distribution box has a simple structure, high integration, and is easy to operate, effectively improving the charging efficiency of the power batteries of the daughter vehicle and the mother vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an interconnected power distribution box and a mother-daughter transport vehicle. Background Technology

[0002] Taking the mother-daughter transport vehicle as an example, new energy tractor vehicles are prone to insufficient power of the mother vehicle's power battery during the return trip of transporting goods. Therefore, in order to improve transportation efficiency and save power consumption, the daughter vehicle is usually mounted on the mother vehicle, and the power battery of the daughter vehicle charges the power battery of the mother vehicle.

[0003] Currently, the power distribution devices used in related technologies for mother-daughter transport vehicles can only electrically connect the power batteries of the daughter vehicle and the mother vehicle, so as to achieve the purpose of charging the other through one of the daughter vehicle and the mother vehicle. However, for charging the daughter vehicle and the mother vehicle using charging piles, charging plugs are set up that are relatively independent of the power distribution device, resulting in poor integration of the structures on the daughter vehicle and the mother vehicle used for charging the power batteries. Utility Model Content

[0004] The purpose of this invention is to provide an interconnected power distribution box and a mother-daughter transport vehicle to solve the aforementioned problems existing in the power distribution devices of the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Interconnected distribution box, including:

[0007] An insulated distribution box with a mounting cavity;

[0008] The lead assembly includes a first positive lead and a first negative lead; the first end of the first positive lead and the first end of the first negative lead both pass through the insulating distribution box and are located inside the mounting cavity;

[0009] The charging plug and the electrical connector are both integrated into the insulating distribution box; at least the plug end of the charging plug is exposed outside the insulating distribution box, and the electrical connector includes a female end, at least the plug end of the female end is exposed outside the insulating distribution box; the positive terminal of the charging plug and the positive terminal of the female end are both electrically connected to the first end of the first positive lead, and the negative terminal of the charging plug and the negative terminal of the female end are both electrically connected to the first end of the first negative lead.

[0010] As an optional solution for the aforementioned interconnected distribution box, the lead group further includes two second positive leads and two second negative leads located within the mounting cavity;

[0011] The first ends of the two second positive leads are electrically connected to the first end of the first positive lead, and the first ends of the two second negative leads are electrically connected to the first end of the first negative lead;

[0012] One of the second positive leads is electrically connected to the positive terminal of the charging plug, and the second of the second negative lead is electrically connected to the negative terminal of the charging plug; the second of the other second positive lead is electrically connected to the positive terminal of the female terminal, and the second of the other second negative lead is electrically connected to the negative terminal of the female terminal.

[0013] As an optional embodiment of the aforementioned interconnected distribution box, the insulated distribution box is provided with an insulating support boss; the electrical connection points of the first ends of the two second positive leads and the first ends of the first positive lead are supported on the insulating support boss, and / or, the electrical connection points of the first ends of the two second negative leads and the first ends of the first negative lead are supported on the insulating support boss.

[0014] As an optional solution for the aforementioned interconnected distribution box, the first ends of the two second positive leads are electrically connected to the first end of the first positive lead and fixedly connected to the insulating support boss, and / or, the first ends of the two second negative leads are electrically connected to the first end of the first negative lead and fixedly connected to the insulating support boss.

[0015] As an alternative to the aforementioned interconnected distribution box, the insulating support boss protrudes from the inner wall of the insulating distribution box and is recessed from the outer wall of the insulating distribution box, the recess forming a first weight-reducing groove.

[0016] As an optional embodiment of the aforementioned interconnected distribution box, the interconnected distribution box further includes a gland assembly, which includes two glands detachably connected to the insulated distribution box. The first positive lead is sealed through one of the glands, and the first negative lead is sealed through the other gland.

[0017] As an alternative to the aforementioned interconnected power distribution box, the interconnected power distribution box further includes a grounding wire, the first end of which is electrically connected to the charging plug, and the second end of which extends out of the insulated power distribution box.

[0018] As an alternative to the aforementioned interconnected distribution box, the insulated distribution box is provided with a connecting lug, and the connecting lug is provided with a connecting hole.

[0019] As an optional solution for the aforementioned interconnected power distribution box, the number of the lead wire group, the charging plug, and the electrical connector are all two, and the two lead wire groups, the two charging plugs, and the two electrical connectors are all provided in a one-to-one correspondence.

[0020] The mother-daughter transport vehicle includes a daughter vehicle and a mother vehicle, and also includes two interconnection power distribution boxes as described above. One of the interconnection power distribution boxes is disposed in the daughter vehicle, and the other interconnection power distribution box is disposed in the mother vehicle. The male terminal of the electrical connector of the daughter vehicle is electrically connected to the male terminal of the electrical connector of the mother vehicle.

[0021] The beneficial effects of this utility model are:

[0022] This utility model provides an interconnected power distribution box, which includes an insulated power distribution box, a lead wire assembly, a charging plug, and an electrical connector. The insulated power distribution box has a mounting cavity. The lead wire assembly includes a first positive lead and a first negative lead. The first end of the first positive lead and the first end of the first negative lead both pass through the insulated power distribution box and are located within the mounting cavity. The charging plug and the electrical connector are both integrated into the insulated power distribution box. At least the plug-in end of the charging plug is exposed outside the insulated power distribution box. The electrical connector includes a female end, and at least the plug-in end of the female end is exposed outside the insulated power distribution box. The positive terminal of the charging plug and the positive terminal of the female end are both electrically connected to the first end of the first positive lead, and the negative terminal of the charging plug and the negative terminal of the female end are both electrically connected to the first end of the first negative lead.

[0023] By integrating a charging plug into an insulated distribution box, and setting the positive terminals of both the charging plug and the female terminal to be electrically connected to the first end of the first positive lead, and the negative terminals of both the charging plug and the female terminal to be electrically connected to the first end of the first negative lead, the interconnected distribution box enables charging of both the daughter vehicle and the mother vehicle via a charging pile, as well as charging from one of the daughter vehicle to the other. This functional integration of the interconnected distribution box effectively improves the integration and performance of the power distribution device, and the interconnected distribution box has a simple structure.

[0024] Secondly, at least one of the charging plug's connectors is exposed outside the insulated distribution box, facilitating the operation of the charging pile to charge the daughter vehicle and the mother vehicle; at least one of the female connectors is exposed outside the insulated distribution box, facilitating the operation of connecting the male and female terminals of the daughter vehicle's electrical connectors, and facilitating the operation of connecting the male and female terminals of the mother vehicle's electrical connectors, thereby effectively improving the efficiency of charging the power batteries of the daughter vehicle and the mother vehicle using this power distribution device.

[0025] Therefore, this interconnected power distribution box has a simple structure, high integration, and is easy to operate, effectively improving the charging efficiency of the power batteries of the subsidiary vehicle and the parent vehicle.

[0026] This utility model also provides a mother-daughter transport vehicle, including a daughter vehicle and a mother vehicle, and two interconnecting power distribution boxes as described above. One interconnecting power distribution box is disposed in the daughter vehicle, and the other interconnecting power distribution box is disposed in the mother vehicle. The male terminal of the electrical connector of the daughter vehicle is electrically connected to the male terminal of the electrical connector of the mother vehicle. By adopting the above-mentioned interconnecting power distribution boxes, the charging efficiency of the daughter vehicle and the mother vehicle can be effectively improved, and the performance and safety of the daughter vehicle and the mother vehicle can also be effectively improved. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the interconnected power distribution box provided in a specific embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of the interconnection distribution box after the first protective cover and the male terminal are removed, provided in a specific embodiment of this utility model;

[0029] Figure 3 This is a partial structural diagram of the interconnected power distribution box provided in a specific embodiment of this utility model. Figure 1 ;

[0030] Figure 4 This is a partial structural diagram of the interconnected power distribution box provided in a specific embodiment of this utility model. Figure 2 ;

[0031] Figure 5 This is a cross-sectional view of the interconnected power distribution box provided in a specific embodiment of this utility model.

[0032] In the picture:

[0033] 1. Insulated distribution box; 11. Box body; 111. Insulated support boss; 112. First weight reduction groove; 113. Second weight reduction groove; 114. Connecting lug; 1141. Connecting hole; 12. Cover; 13. Sealing strip;

[0034] 21. First positive lead; 22. First negative lead; 23. Second positive lead; 231. Sub-positive lead; 24. Second negative lead; 241. Sub-negative lead;

[0035] 3. Charging plug;

[0036] 4. Electrical connector; 41. Female terminal; 42. Male terminal;

[0037] 5. Granule head;

[0038] 6. Grounding wire;

[0039] 7. First protective shield. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] Taking a mother-daughter transport vehicle as an example, new energy tractor vehicles often experience insufficient battery power in the mother vehicle during the return journey. Therefore, to improve transportation efficiency and save energy consumption, the daughter vehicle is usually mounted on top of the mother vehicle, and its battery charges the mother vehicle's battery. Currently, the power distribution devices used in mother-daughter transport vehicles typically only electrically connect the power batteries of the daughter vehicle and the mother vehicle, achieving the purpose of charging the other vehicle from one. However, for charging the daughter and mother vehicles using charging stations, each vehicle has a relatively independent charging plug, resulting in poor integration of the structures on the daughter and mother vehicles used for charging the power batteries.

[0045] This utility model provides an interconnected power distribution box, such as Figure 1-5As shown, the interconnected power distribution box includes an insulated power distribution box 1, a lead wire group, a charging plug 3, and an electrical connector 4. The insulated power distribution box 1 has a mounting cavity. The lead wire group includes a first positive lead 21 and a first negative lead 22. The first end of the first positive lead 21 and the first end of the first negative lead 22 both pass through the insulated power distribution box 1 and are located in the mounting cavity. The charging plug 3 and the electrical connector 4 are both integrated into the insulated power distribution box 1. At least the plug end of the charging plug 3 is exposed outside the insulated power distribution box 1. The electrical connector 4 includes a female end 41, and at least the plug end of the female end 41 is exposed outside the insulated power distribution box 1. The positive terminal of the charging plug 3 and the positive terminal of the female end 41 are both electrically connected to the first end of the first positive lead 21, and the negative terminal of the charging plug 3 and the negative terminal of the female end 41 are both electrically connected to the first end of the first negative lead 22.

[0046] Taking the application of this interconnected power distribution box in a mother-daughter transport vehicle as an example, the mother-daughter transport vehicle includes a daughter vehicle and a mother vehicle. Both the daughter vehicle and the mother vehicle are equipped with the aforementioned interconnected power distribution box, and the male terminal 42 of the daughter vehicle's electrical connector 4 is electrically connected to the male terminal 42 of the mother vehicle's electrical connector 4. The positive and negative terminals of the daughter vehicle's power battery are correspondingly connected to the second ends of the first positive lead 21 and the first negative lead 22 of the interconnected power distribution box. The positive and negative terminals of the mother vehicle's power battery are correspondingly connected to the second ends of the first positive lead 21 and the first negative lead 22 of the interconnected power distribution box.

[0047] When one of the power batteries in the daughter vehicle and the mother vehicle is low on power and needs to be charged by the other, the male terminal 42 of the daughter vehicle's electrical connector 4 is plugged into the female terminal 41, and the male terminal 42 of the mother vehicle's electrical connector 4 is plugged into the female terminal 41. This allows the power batteries in the daughter vehicle and the mother vehicle to be electrically connected through two interconnected power distribution boxes, enabling one of the power batteries in the daughter vehicle and the mother vehicle to charge the other. This effectively improves the transportation efficiency of the mother-daughter transport vehicle and reduces energy consumption during transportation.

[0048] By integrating a charging plug 3 onto the insulated distribution box 1, and setting the positive terminal of the charging plug 3 and the positive terminal of the female terminal 41 to be electrically connected to the first end of the first positive lead 21, and the negative terminal of the charging plug 3 and the negative terminal of the female terminal 41 to be electrically connected to the first end of the first negative lead 22, the interconnected distribution box can realize charging of both the daughter vehicle and the mother vehicle through the charging pile, as well as charging from one of the daughter vehicle and the mother vehicle to the other. The integrated functions of the interconnected distribution box effectively improve the integration and performance of the power distribution device, and the interconnected distribution box has a simple structure.

[0049] Secondly, at least one of the plug terminals of the charging plug 3 is exposed outside the insulating distribution box 1 to facilitate the operation of the charging pile to charge the daughter vehicle and the mother vehicle; at least one of the plug terminals of the female terminal 41 is exposed outside the insulating distribution box 1 to facilitate the operation of the male terminal 42 of the electrical connector 4 of the daughter vehicle to be plugged into the female terminal 41 and to connect the male terminal 42 of the electrical connector 4 of the mother vehicle to the female terminal 41, thereby effectively improving the efficiency of charging the power battery of the daughter vehicle and the power battery of the mother vehicle using this power distribution device.

[0050] Therefore, this interconnected power distribution box has a simple structure, high integration, and is easy to operate, effectively improving the charging efficiency of the power batteries of the subsidiary vehicle and the parent vehicle.

[0051] The specific structures of the charging plug 3 and the electrical connector 4 are existing technologies, so they will not be described in detail here.

[0052] Among them, such as Figure 3-5 As shown, the lead assembly also includes two second positive leads 23 and two second negative leads 24 located within the mounting cavity; the first ends of the two second positive leads 23 are electrically connected to the first end of the first positive lead 21, and the first ends of the two second negative leads 24 are electrically connected to the first end of the first negative lead 22; the second end of one second positive lead 23 is electrically connected to the positive terminal of the charging plug 3, and the second end of one second negative lead 24 is electrically connected to the negative terminal of the charging plug 3; the second end of the other second positive lead 23 is electrically connected to the positive terminal of the female terminal 41, and the second end of the other second negative lead 24 is electrically connected to the negative terminal of the female terminal 41. This design ensures that the positive terminals of the charging plug 3 and the female terminal 41 are both electrically connected to the first end of the first positive lead 21, and the negative terminals of the charging plug 3 and the female terminal 41 are both electrically connected to the first end of the first negative lead 22. Furthermore, two second positive leads 23 and two second negative leads 24 are located inside the mounting cavity, which facilitates subsequent inspection and maintenance and enhances the aesthetics of the interconnected power distribution box.

[0053] Optionally, such as Figure 3 and Figure 5 As shown, the insulated distribution box 1 is provided with an insulating support boss 111; the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21 is supported on the insulating support boss 111, and / or, the electrical connection between the first end of the two second negative leads 24 and the first end of the first negative lead 22 is supported on the insulating support boss 111.

[0054] like Figure 3 and Figure 5As shown, the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21 is supported on the insulating support boss 111. Compared with the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21 being suspended, the connection reliability of the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21 can be improved.

[0055] like Figure 3 and Figure 5 As shown, the electrical connection between the first end of the two second negative leads 24 and the first end of the first negative lead 22 is supported on the insulating support boss 111. Compared with the electrical connection between the first end of the two second negative leads 24 and the first end of the first negative lead 22 being suspended, the connection reliability of the electrical connection between the first end of the two second negative leads 24 and the first end of the first negative lead 22 can be improved.

[0056] Further optional, such as Figure 3 and Figure 5 As shown, the first ends of the two second positive leads 23 are electrically connected to the first end of the first positive lead 21 at their electrical connection points, and / or the first ends of the two second negative leads 24 are electrically connected to the first end of the first negative lead 22 at their electrical connection points, and are also fixedly connected to the insulating support boss 111.

[0057] like Figure 3 and Figure 5 As shown, the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21 is supported and fixedly connected to the insulating support boss 111. This can further improve the connection reliability of the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21, and can effectively reduce the impact of external vibrations on the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21.

[0058] like Figure 3 and Figure 5 As shown, the electrical connection points of the first ends of the two second negative leads 24 and the first ends of the first negative lead 22 are supported and fixedly connected to the insulating support boss 111. This can further improve the connection reliability of the electrical connection between the first ends of the two second negative leads 24 and the first ends of the first negative lead 22, and can effectively reduce the impact of external vibrations on the electrical connection points between the first ends of the two second negative leads 24 and the first ends of the first negative lead 22.

[0059] Specifically, screws or bolts are used to fix the electrical connection points of the first ends of the two second positive leads 23 and the first ends of the first positive lead 21 to the insulating support boss 111, and screws or bolts are used to fix the electrical connection points of the first ends of the two second negative leads 24 and the first ends of the first negative lead 22 to the insulating support boss 111.

[0060] Specifically, along the height direction of the interconnected distribution box, the position where the first positive lead 21 passes through the insulated distribution box 1 is the first height position, the position where the first negative lead 22 passes through the insulated distribution box 1 is the second height position, and the position where the top of the insulating support boss 111 is located is the third height position.

[0061] In this embodiment, as Figure 3 and Figure 5 As shown, in the exemplary configuration, the first height position, the second height position, and the third height position are approximately at the same height along the height direction of the interconnected distribution box. This makes the portion of the first positive lead 21 located within the mounting cavity approximately straight, and also makes the portion of the first negative lead 22 located within the mounting cavity approximately straight.

[0062] In other embodiments, the electrical connection between the first end of the two second positive leads 23 and the first end of the first positive lead 21 may be left unconnected; and / or, the electrical connection between the first end of the two second negative leads 24 and the first end of the first negative lead 22 may be left unconnected.

[0063] In this embodiment, as Figure 3-5 As shown, an exemplary configuration of the second positive lead 23 includes two connected sub-positive leads 231. The electrical connection of the two sub-positive leads 231 of the second positive lead 23 is supported and fixed on the insulating support boss 111, which can effectively improve the connection reliability of the electrical connection of the two sub-positive leads 231 of the second positive lead 23, and can effectively prevent external vibrations from affecting the electrical connection of the two sub-positive leads 231 of the second positive lead 23.

[0064] like Figure 3-5 As shown, an exemplary configuration of the second negative lead 24 includes two connected sub-negative leads 241. The electrical connection of the two sub-negative leads 241 of the second negative lead 24 is supported and fixed on the insulating support boss 111, which can effectively improve the connection reliability of the electrical connection of the two sub-negative leads 241 of the second negative lead 24, and can effectively prevent external vibrations from affecting the electrical connection of the two sub-negative leads 241 of the second negative lead 24.

[0065] It is understandable that the number of sub-positive leads 231 of each second positive lead 23 and the number of sub-negative leads 241 of each second negative lead 24 can be adaptively set according to actual working conditions.

[0066] In this embodiment, as Figures 3-5 As shown, an exemplary configuration is provided in which a portion of the second positive lead 23 is supported on the insulating support boss 111, and a portion of the second negative lead 24 is supported on the insulating support boss 111.

[0067] In this embodiment, the second positive lead 23 and the second negative lead 24 are exemplary copper busbars. Furthermore, the outer periphery of both the second positive lead 23 and the second negative lead 24 is covered with an insulating layer.

[0068] Further optional, such as Figure 5 As shown, the insulating support boss 111 protrudes from the inner wall of the insulating distribution box 1 and is recessed from the outer wall of the insulating distribution box 1, forming a first weight-reducing groove 112. While ensuring the supporting performance and structural strength of the insulating support boss 111, the weight of the insulating distribution box 1 can be effectively reduced.

[0069] Specifically, such as Figure 1-3 and Figure 5 As shown, the insulated distribution box 1 includes a detachably connected box body 11 and a cover 12, forming a mounting cavity between the box body 11 and the cover 12. The first end of the first positive lead 21 and the first end of the first negative lead 22 both pass through the box body 11. The charging plug 3 and the electrical connector 4 are both integrated into the box body 11. Furthermore, a sealing strip 13 is embedded in the box body 11 and / or the cover 12, and the sealing strip 13 is used to seal the gap between the box body 11 and the cover 12.

[0070] In this embodiment, the exemplary method for detachably connecting the box body 11 and the cover 12 is by screw connection. For example... Figure 5 As shown, the exemplary housing 11 is fitted with a sealing strip 13. (As indicated...) Figure 5 As shown, an insulating support boss 111 is provided protruding from the inner bottom wall of the box body 11; a first weight-reducing groove 112 is recessed into the outer bottom wall of the box body 11. In other embodiments, the box body 11 and the cover 12 can be detachably connected by snap-fit ​​or other means.

[0071] In this embodiment, as Figure 1-3 and Figure 5 As shown, the exemplary configuration of the insulated distribution box 1 is rectangular. It is understood that the shape of the insulated distribution box 1 can also be adapted to meet the actual operating conditions.

[0072] Further optional, such as Figure 1-3 As shown, the inner wall and / or outer wall of the insulating distribution box 1 are recessed with a second weight-reducing groove 113 to further reduce the weight of the insulating distribution box 1. In this embodiment, the outer peripheral wall of the box body 11 is exemplaryly provided with a second weight-reducing groove 113.

[0073] Further optional, such as Figure 1-3 As shown, the number of second weight-reducing slots 113 is at least two, to further reduce the weight of the insulated distribution box 1. In this embodiment, four second weight-reducing slots 113 are exemplaryly provided.

[0074] Optionally, such as Figure 3-5 As shown, the interconnected distribution box also includes a gland assembly, which includes two glands 5 detachably connected to the insulated distribution box 1. A first positive lead 21 is sealed through one gland 5, and a first negative lead 22 is sealed through the other gland 5. Specifically, the glands 5 are detachably connected to the box body 11.

[0075] This design allows for the replacement of the gland 5 according to different sizes of the first positive lead 21 and the first negative lead 22, thereby effectively improving the versatility of the interconnected distribution box. Secondly, the gland 5 applied to the first positive lead 21 can fix the position of the first positive lead 21 along its length and seal the gap between the first positive lead 21 and the box body 11. Similarly, the gland 5 applied to the first negative lead 22 can fix the position of the first negative lead 22 along its length and seal the gap between the first negative lead 22 and the box body 11, thereby effectively improving the safety of the interconnected distribution box. The specific structure of the gland 5 is prior art and will not be described in detail here.

[0076] Optionally, in this embodiment, as Figure 4 and Figure 5 As shown, the interconnected power distribution box also includes a grounding wire 6. The first end of the grounding wire 6 is electrically connected to the charging plug 3, and the second end extends out of the insulated power distribution box 1. Specifically, in this embodiment, the second end of the grounding wire 6 is used to connect to the vehicle frame. This grounds the interconnected power distribution box, further improving its safety.

[0077] Optionally, such as Figure 1-3 As shown, the insulating distribution box 1 has a protruding connecting lug 114, and the connecting lug 114 has a connecting hole 1141. Specifically, the box body 11 has a protruding connecting lug 114. The insulating distribution box 1 can be detachably connected to the vehicle frame or other structures through the connecting hole 1141, which facilitates installation, disassembly and maintenance, and allows the setting position of the interconnecting distribution box to be adjusted according to actual working conditions.

[0078] Further optional, such as Figure 1-3 As shown, the number of connecting ears 114 is at least two, and the at least two connecting ears 114 are spaced apart on the outer periphery of the box 11. This further improves the reliability of the connection between the insulated distribution box 1 and other structures such as the vehicle frame. In this embodiment, four connecting ears 114 are provided as an example.

[0079] Optionally, in this embodiment, as Figure 3-5 As shown, there are two lead wire groups, two charging plugs 3, and two electrical connectors 4, all of which are arranged in a one-to-one correspondence to improve charging efficiency.

[0080] Optionally, in this embodiment, as Figure 1 As shown, the charging plug 3 is detachably connected to a first protective cover 7, which covers the plug end of the charging plug 3. When the charging plug 3 is not being used for charging, the first protective cover 7 covers the plug end of the charging plug 3 to further improve the safety of the interconnected power distribution box. Specifically, the first protective cover 7 is detachably connected to the charging plug 3 by means of plugging or snap-fit, etc., to improve the efficiency of assembly and disassembly.

[0081] Optionally, a second protective cover is detachably connected to the female end 41, which covers the plug-in end of the female end 41. When charging is not performed using the electrical connector 4, the second protective cover covers the plug-in end of the charging plug 3 to further improve the safety of the interconnected power distribution box. Specifically, the second protective cover is detachably connected to the female end 41 via a plug-in or snap-fit ​​connection to improve assembly and disassembly efficiency.

[0082] This utility model also provides a mother-daughter transport vehicle, including a daughter vehicle and a mother vehicle, and also includes two interconnection power distribution boxes as described above, one interconnection power distribution box is disposed in the daughter vehicle and the other interconnection power distribution box is disposed in the mother vehicle, and the male terminal 42 of the electrical connector 4 of the daughter vehicle is electrically connected to the male terminal 42 of the electrical connector 4 of the mother vehicle.

[0083] By adopting the aforementioned interconnected power distribution box, the charging efficiency of both the slave vehicle and the mother vehicle can be effectively improved, as well as their performance and safety.

[0084] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An interconnected power distribution box, characterized in that, include: An insulated distribution box (1) has an installation cavity; The lead assembly includes a first positive lead (21) and a first negative lead (22); the first end of the first positive lead (21) and the first end of the first negative lead (22) both pass through the insulating distribution box (1) and are located in the mounting cavity; The charging plug (3) and the electrical connector (4) are both integrated into the insulating distribution box (1); at least the plug end of the charging plug (3) is exposed outside the insulating distribution box (1), and the electrical connector (4) includes a female end (41), at least the plug end of the female end (41) is exposed outside the insulating distribution box (1); the positive pole of the charging plug (3) and the positive pole of the female end (41) are both electrically connected to the first end of the first positive lead (21), and the negative pole of the charging plug (3) and the negative pole of the female end (41) are both electrically connected to the first end of the first negative lead (22).

2. The interconnected power distribution box according to claim 1, characterized in that, The lead assembly also includes two second positive leads (23) and two second negative leads (24) located within the mounting cavity; The first ends of the two second positive leads (23) are electrically connected to the first end of the first positive lead (21), and the first ends of the two second negative leads (24) are electrically connected to the first end of the first negative lead (22). One of the second positive leads (23) is electrically connected to the positive terminal of the charging plug (3), and the second end of one of the second negative leads (24) is electrically connected to the negative terminal of the charging plug (3); the second end of another second positive lead (23) is electrically connected to the positive terminal of the female terminal (41), and the second end of another second negative lead (24) is electrically connected to the negative terminal of the female terminal (41).

3. The interconnected power distribution box according to claim 2, characterized in that, The insulated distribution box (1) is provided with an insulating support boss (111); the electrical connection between the first end of the two second positive leads (23) and the first end of the first positive lead (21) is supported on the insulating support boss (111), and / or, the electrical connection between the first end of the two second negative leads (24) and the first end of the first negative lead (22) is supported on the insulating support boss (111).

4. The interconnected power distribution box according to claim 3, characterized in that, The first ends of the two second positive leads (23) are electrically connected to the first end of the first positive lead (21) and fixedly connected to the insulating support boss (111), and / or the first ends of the two second negative leads (24) are electrically connected to the first end of the first negative lead (22) and fixedly connected to the insulating support boss (111).

5. The interconnected power distribution box according to claim 3, characterized in that, The insulating support boss (111) protrudes from the inner wall of the insulating distribution box (1) and is recessed from the outer wall of the insulating distribution box (1), and the recess forms a first weight-reducing groove (112).

6. The interconnected distribution box according to any one of claims 1-5, characterized in that, The interconnected distribution box also includes a gland assembly, which includes two glands (5) detachably connected to the insulated distribution box (1), with the first positive lead (21) sealed through one of the glands (5) and the first negative lead (22) sealed through the other gland (5).

7. The interconnected distribution box according to any one of claims 1-5, characterized in that, The interconnected distribution box also includes a grounding wire (6), the first end of which is electrically connected to the charging plug (3), and the second end extends out of the insulated distribution box (1).

8. The interconnected distribution box according to any one of claims 1-5, characterized in that, The insulating distribution box (1) is provided with a connecting ear (114) protruding outward, and the connecting ear (114) is provided with a connecting hole (1141).

9. The interconnected distribution box according to any one of claims 1-5, characterized in that, The number of each lead wire group, the charging plug (3) and the electrical connector (4) is two, and the two lead wire groups, the two charging plugs (3) and the two electrical connectors (4) are all set in a one-to-one correspondence.

10. A mother-daughter transport vehicle, comprising a daughter vehicle and a mother vehicle, characterized in that, It also includes two interconnected power distribution boxes as described in any one of claims 1-9, one of which is disposed in the sub-vehicle and the other of which is disposed in the mother vehicle, wherein the male terminal (42) of the electrical connector (4) of the sub-vehicle is electrically connected to the male terminal (42) of the electrical connector (4) of the mother vehicle.

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