CN111370893A - Junction Boxes and Electric Vehicles - Google Patents

Abstract

The invention discloses a junction box and an electric vehicle. The junction box includes: a housing assembly, which is provided with an installation cavity and a communication cavity that communicates with the installation cavity; Two connection parts, the first connection part is accommodated in the installation cavity, the second connection part is limited to the communication cavity and extends out of the communication cavity; a plurality of copper terminals are accommodated in the installation cavity Inside, each of the copper terminals is provided with a slot, and one end of each of the copper terminals away from the slot is connected to the first connecting portion, so that a plurality of the copper terminals are arranged in parallel and spaced apart. The invention aims to provide a junction box that is beneficial to the heat dissipation of cables and has good waterproof performance. current carrying capacity and easy wiring.

Description

Junction Boxes and Electric Vehicles

technical field

The invention relates to the technical field of electric vehicle connectors, in particular to a junction box and an electric vehicle using the junction box.

Background technique

At present, the junction box of electric vehicles is limited by the wire harness crimping process and the external size. The current carrying capacity of the junction box is poor, and it is not conducive to the temperature rise control during the charging and discharging process. At the same time, it is not conducive to the arrangement of large-diameter cables in the junction box, and the over-bending of the cables will not be conducive to heat dissipation, and will affect the waterproof performance of the junction box.

The above is only used to assist the understanding of the technical solutions of the present application, and does not represent an admission as prior art.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a junction box and an electric vehicle, aiming to provide a junction box that is beneficial to the heat dissipation of cables and has good waterproof performance, and the junction box effectively avoids the problem of difficult bending of cables with large cross-sectional areas. , improve the current carrying capacity, and easy wiring.

In order to achieve the above purpose, the junction box proposed by the present invention is applied to electric vehicles, and the junction box includes:

a housing assembly, which is provided with an installation cavity and a communication cavity communicating with the installation cavity;

The copper bar includes a first connection part and a second connection part arranged at an included angle, the first connection part is accommodated in the installation cavity, and the second connection part is limited to the communication cavity and extends out of the said communication cavity; and

A plurality of copper terminals are accommodated in the mounting cavity, each of the copper terminals is provided with a slot, and one end of each of the copper terminals away from the slot is connected to the first connection portion, so that a plurality of The copper terminals are arranged in parallel and spaced apart.

In one embodiment, the first connection portion is provided with a plurality of first connection holes arranged at intervals, the end of each of the copper terminals away from the slot is provided with a second connection hole, and each of the copper terminals is provided with a second connection hole. The first fastener is passed through the second connection hole and the first connection hole to be connected with the first connection part.

In one embodiment, the connection between the first connecting portion and the second connecting portion is a smooth transition.

In one embodiment, each of the copper terminals includes a fixed portion and a plug-in portion connected to each other, the insertion slot is provided at one end of the plug-in portion facing away from the fixed portion, and the fixed portion is provided with the socket. The second connecting hole is arranged vertically with the axis direction of the second connecting hole and the slotting direction of the slot.

In one embodiment, the housing assembly is further provided with an installation slot adjacent to the communication cavity, the junction box further includes a thermistor, and one end of the thermistor is accommodated and limited in the installation slot, so The other end of the thermistor and the end of the second connecting portion extending out of the communication cavity are arranged in parallel.

In one embodiment, the housing assembly includes:

a housing provided with a cavity, a first communication port communicating with the cavity, and a plurality of second communication ports, and the plurality of second communication ports are arranged at intervals; and

an insulating shell, accommodated and limited in the cavity, the insulating shell includes a first shell and a second shell arranged at an included angle, and one end of the first shell away from the second shell protrudes The first communication port, the first shell is provided with the communication cavity, the second shell is provided with the installation cavity, and the end of the second shell away from the first shell corresponds to each One of the second communication ports is provided with via holes, and each of the via holes and one of the sockets are arranged in a direct manner.

In one embodiment, a side of the casing facing away from the first communication port is provided with a first opening communicating with the cavity, and the second housing is provided with a second opening corresponding to the first opening, The housing assembly further includes an upper pressure cover and an insulating cover, the insulating cover is detachably covered with the second opening, and the upper pressure cover is detachably covered with the first opening.

In one embodiment, the housing assembly further includes a plurality of tail cap assemblies, each of the tail cap assemblies is detachably disposed at one of the second communication ports, and each tail cap assembly is provided with a communication port. a socket of the second communication port;

And/or, the casing is provided with a limit stage at the first communication port, and the outer wall of the first casing is provided with a limit step, and the limit step is in limit abutment with the limit stage;

And/or, the casing is provided with a groove around the first opening, and the housing assembly further includes a sealing ring, and the sealing ring is accommodated in the groove and abuts with the upper pressing cover.

In one embodiment, the first housing is further provided with a mounting hole communicating with the communication cavity, the second connecting portion is provided with a through hole corresponding to the mounting hole, and the second connecting portion is provided with a second tightening hole. The fastener is connected to the first housing through the mounting hole and the through hole.

The present invention also provides an electric vehicle, comprising a vehicle body and a junction box disposed on the vehicle body, wherein the junction box is the aforementioned junction box.

In the junction box of the technical solution of the present invention, the installation cavity and the communication cavity communicated with each other are arranged in the housing assembly, and the copper bar is arranged as the first connection part and the second connection part which are integrally connected at an angle, so that the first connection part of the copper bar is formed. A connection part is accommodated in the installation cavity and connected to a plurality of copper terminals, and the second connection part of the copper bar is limited to the communication cavity, and extends out of the communication cavity to connect with the cable, thereby effectively avoiding the problem of cable bending in the junction box , and the copper bar is used to connect with multiple copper terminals at the same time, which effectively improves the current carrying capacity of the junction box; further, by accommodating multiple copper terminals in the installation cavity, and placing multiple copper terminals away from the slot at one end It is connected to the first connection part, so that multiple copper terminals are arranged in parallel and at intervals, which effectively reduces the space usage of the junction box, thereby facilitating the connection between the slots of multiple copper terminals and the large-diameter cable, and improving the waterproof performance at the same time. , so that the junction box completes the wiring of large-diameter cables, and is conducive to the heat dissipation of the cables. The junction box proposed by the invention not only saves the space inside the compartment, but also avoids the problem of over-bending of large-section cables caused by wiring operations, reduces the labor intensity of wiring operations, and improves the waterproof performance and current-carrying capacity of the junction box. , and is conducive to wiring and cable heat dissipation.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of a junction box according to an embodiment of the present invention;

2 is an exploded schematic view of a junction box in an embodiment of the present invention;

3 is a schematic cross-sectional view of a junction box according to an embodiment of the present invention;

FIG. 4 is a partially exploded schematic view of a junction box in an embodiment of the present invention.

Description of reference numbers:

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

At the same time, the meaning of "and/or" or "and/or" in the whole text is that it includes three schemes, taking "A and/or B" as an example, including scheme A, scheme B, or scheme A and B at the same time satisfied plan.

In addition, descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The present invention provides a junction box 100 . It can be understood that the junction box 100 is applied to an electric vehicle, and the cables inside the electric vehicle are wired through the junction box 100 , so that the electric vehicle is connected to other power supply components through the junction box 100 to realize power on the electric vehicle.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , in the embodiment of the present invention, the junction box 100 includes a housing component 1 , a copper bar 2 and a plurality of copper terminals 3 , wherein the housing component 1 There is an installation cavity 1221 and a communication cavity 1211 communicating with the installation cavity 1221; the copper bar 2 includes a first connection part 21 and a second connection part 22 arranged at an angle, the first connection part 21 is accommodated in the installation cavity 1221, the second connection part 21 The connecting portion 22 is limited to the communication cavity 1211 and extends out of the communication cavity 1211 ; a plurality of copper terminals 3 are accommodated in the mounting cavity 1221 , each copper terminal 3 is provided with a slot 321 , and one end of each copper terminal 3 away from the slot 321 It is connected to the first connection part 21 so that the plurality of copper terminals 3 are arranged in parallel and at intervals.

In this embodiment, the junction box 100 is installed on the electric vehicle, the junction box 100 is connected to the cable of the electric vehicle through the slot 321 of the copper terminal 3 , and the junction box 100 is connected to other components through the second connection portion 22 of the copper bar 2 cable connection to realize the electrification of the electric vehicle.

It can be understood that the housing assembly 1 serves to install, fix and protect the copper bar 2 and the plurality of copper terminals 3 . The housing assembly 1 has an opening communicating with the mounting cavity 1221 and an opening communicating with the communicating cavity 1211 , so that the junction box 100 is convenient. The cable is connected to the electric vehicle through the opening.

In this embodiment, the extension direction of the communication cavity 1211 and the extension direction of the installation cavity 1221 are arranged at an angle, so that the first connection part 21 and the second connection part 22 of the copper bar 2 are installed in the installation cavity 1221 and the communication cavity 1211 Therefore, the angle structure between the first connecting portion 21 and the second connecting portion 22 is used to effectively avoid the bending problem of the cable in the housing assembly 1 . It can be understood that the communication cavity 1211 and the installation cavity 1221 in the housing assembly 1 can be enclosed and formed by the inner wall of the housing, or can be enclosed and formed by other installation structures in the housing assembly 1, so that the first connection can be realized. The limit installation of the part 21 and the second connecting part 22 .

It can be understood that, in order to connect the plurality of copper terminals 3 to the first connection portion 21 of the copper bar 2, the plurality of copper terminals 3 are arranged in parallel and spaced apart. At this time, the first connection portion 21 of the copper bar 2 has a wider size. Thus, the plurality of copper terminals 3 are arranged side by side and connected to the first connection portion 21 at the same time.

In this embodiment, the extending direction of the first connecting portion 21 of the copper bar 2 and the extending direction of the second connecting portion 22 are arranged at an angle, so that the slots 321 of the plurality of copper terminals 3 extend from the second connecting portion 22 . The directions are arranged at an included angle, so that the second connection part 22 of the copper bar 2 and the slot 321 of the copper terminal 3 are respectively connected to the cables in the two directions, thereby effectively avoiding excessive bending of the cables inside the electric vehicle. .

Optionally, the extending direction of the first connecting portion 21 of the copper bar 2 is perpendicular to the extending direction of the second connecting portion 22 , and the opening direction of the slots 321 of the plurality of copper terminals 3 is the same as the extending direction of the first connecting portion 21 . The opening directions of the slots 321 of the plurality of copper terminals 3 are arranged in parallel, and the slots 321 of the plurality of copper terminals 3 are located on the same straight line.

In the junction box 100 of the technical solution of the present invention, the installation cavity 1221 and the communication cavity 1211 are arranged in the housing assembly 1, and the copper bar 2 is arranged as the first connection part 21 and the second connection part which are integrally connected at an angle. 22, so that the first connection part 21 of the copper bar 2 is accommodated in the installation cavity 1221 and connected to the plurality of copper terminals 3, and the second connection part 22 of the copper bar 2 is limited to the communication cavity 1211, and extends out of the communication cavity 1211 and cable connection, thereby effectively avoiding the problem of cable bending in the junction box 100, and using the copper bar 2 to connect with a plurality of copper terminals 3 at the same time, effectively improving the current carrying capacity of the junction box 100; The copper terminals 3 are accommodated in the mounting cavity 1221 , and the ends of the copper terminals 3 away from the slot 321 are connected to the first connection portion 21 , so that the copper terminals 3 are arranged in parallel and at intervals, which effectively reduces the number of wiring connections. The space of the box 100 is used, so as to facilitate the connection of the slots 321 of the plurality of copper terminals 3 to the large-diameter cables, improve the waterproof performance, and enable the junction box 100 to complete the wiring of the large-diameter cables, which is conducive to the heat dissipation of the cables. . The junction box 100 proposed by the present invention not only saves the space inside the compartment, but also avoids the problems of over-bending of cables or difficult-to-bend cables with large cross-sectional areas caused by wiring operations, and difficult wiring, thereby reducing the labor intensity of wiring operations and improving the efficiency of wiring. The waterproof performance and current-carrying capacity of the junction box are beneficial to the heat dissipation of wiring and cables.

In one embodiment, as shown in FIG. 2 , FIG. 3 and FIG. 4 , the first connection portion 21 is provided with a plurality of first connection holes 211 arranged at intervals, and the end of each copper terminal 3 away from the slot 321 is provided with a first connection hole 211 . Two connection holes 311 , each copper terminal 3 is connected to the first connection portion 21 through the first fastener 5 through the second connection hole 311 and the first connection hole 211 .

In the present embodiment, the first connection portion 21 and the second connection portion 22 of the copper bar 2 are in a plate-like structure. A second connection hole 311 is provided on the 3, so that each copper terminal 3 is connected to the first connection part 21 through the second connection hole 311 and the first connection hole 211 through the first fastener 5, so as to improve the connection between the copper terminal 3 and the copper terminal 3. Connection stability of row 2.

It can be understood that the first fastener 5 may be a structure such as a screw, a bolt or a pin. The first connection hole 211 or the second connection hole 311 can be optionally a threaded hole or a countersunk hole or the like. In order to further improve the connection stability between the copper terminal 3 and the first connecting part 21 of the copper bar 2, the end of the copper terminal 3 away from the slot 321 is in a plate-like structure, so that the contact area between the copper terminal 3 and the first connecting part 21 can be increased. . In this embodiment, the first connection hole 211 and the second connection hole 311 are both through-hole structures, and the first fastener 5 includes a bolt and a nut matched with the bolt, so that the bolt passes through the first connection hole 211 and the bolt in sequence. The second connection hole 311 is connected with a nut, thereby locking the copper terminal 3 and the copper bar 2 .

In this embodiment, in order to prevent the first fastener 5 from being interfered by other mounting structures on the inner wall of the housing assembly 1 when the copper terminal 3 and the copper bar 2 are locked, the housing assembly 1 is provided with corresponding first fasteners 5 There are escape holes. It can be understood that, in other embodiments, the copper bar 2 and the copper terminal 3 can also be connected in other ways, such as fixed connection methods such as welding or interference fit, etc., or snap connection, plug fit, screw connection, etc. The method of disassembly and connection, etc., is not limited here.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the connection between the first connecting portion 21 and the second connecting portion 22 is a smooth transition. It can be understood that this arrangement is beneficial to improve the structural strength of the copper bar 2 .

In one embodiment, as shown in FIG. 2 , FIG. 3 and FIG. 4 , each copper terminal 3 includes a fixed part 31 and a plug-in part 32 connected to each other, and an end of the plug-in part 32 facing away from the fixed part 31 is provided with a plug. In the slot 321 , the fixing portion 31 is provided with a second connection hole 311 , and the axis direction of the second connection hole 311 is perpendicular to the slotting direction of the slot 321 .

In this embodiment, the fixing portion 31 and the plug-in portion 32 of the copper terminal 3 are integrally formed, so that the structural strength of the copper terminal 3 can be improved. A slot 321 is provided at the end of the plug-in portion 32 facing away from the fixing portion 31 , so that the slot 321 can be used to achieve stable connection with the large wire diameter. Optionally, the plug portion 32 has a cylindrical structure with one end open, so that the structure of the slot 321 is adapted to the external shape of the cable, thereby facilitating connection with the cable.

It can be understood that, in order to improve the connection stability between the fixing portion 31 and the copper bar 2, the fixing portion 31 has a flat sheet-like or plate-like structure, which effectively increases the contact area between the fixing portion 31 and the first connecting portion 21 of the copper bar 2. . The second connecting hole 311 penetrates through the fixing portion 31 , and the axial direction of the second connecting hole 311 is perpendicular to the slotting direction of the slot 321 . When the fixing portion 31 is in contact with the first connecting portion 21 , the second connecting hole 311 and the first connecting hole 211 are disposed in the opposite direction, which facilitates the assembly of the first fastener 5 .

In one embodiment, as shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the housing assembly 1 is further provided with a mounting slot 1212 adjacent to the communication cavity 1211 , and the junction box 100 further includes a thermistor 4 , the thermistor 4 One end of the thermistor 4 is accommodated and limited in the installation groove 1212 , and the other end of the thermistor 4 is arranged in parallel with the end of the second connecting portion 22 extending out of the communication cavity 1211 .

In the present embodiment, the installation groove 1212 is provided in the housing assembly 1 adjacent to the communication cavity 1211, and the limit thermistor 4 is installed by using the installation groove 1212, so as to facilitate the use of the thermistor 4 to detect the copper bar 2 in the through cavity 1211. The temperature of the second connection portion 22 is increased, so as to ensure the real-time monitoring of the temperature rise of the junction box 100 and prevent the temperature rise of the junction box 100 from being too high.

In one embodiment, as shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the housing assembly 1 includes a housing 11 and an insulating housing 12 , wherein the housing 11 is provided with a cavity 111 and a first connecting cavity 111 . The communication port 112 and a plurality of second communication ports 113, the plurality of second communication ports 113 are arranged at intervals; the insulating shell 12 is accommodated and limited in the cavity 111, and the insulating shell 12 includes a first shell 121 and The second casing 122, one end of the first casing 121 away from the second casing 122 protrudes from the first communication port 112, the first casing 121 is provided with a communication cavity 1211, the second casing 122 is provided with a mounting cavity 1221, One end of the two casings 122 away from the first casing 121 is provided with a through hole 1222 corresponding to each of the second communication ports 113 , and each of the through holes 1222 and a slot 321 are disposed facing each other.

In this embodiment, the external structure of the housing 11 is L-shaped, so that the first communication port 112 and the second communication port 113 are located at both ends of the L-shaped housing 11 , thereby ensuring that cables of different parts pass through the first communication port 112 And the second communication port 113 is connected to the second connection part 22 of the copper bar 2 and the slot 321 of the copper terminal 3 . The casing 11 is used to protect the insulating casing 12 as well as the copper bars 2 and the copper terminals 3 . The casing 11 can be made of metal material or plastic material, which is not limited herein.

It can be understood that the outer shell 11 is wrapped around the outer wall of the insulating shell 12, and the insulating shell 12 is made of insulating material, such as plastic or the like. The first shell 121 and the second shell 122 of the insulating shell 12 are arranged at an included angle, that is, the extension direction of the first shell 121 and the extension direction of the second shell 122 are arranged at an included angle. Optionally, the extending direction of the first casing 121 is perpendicular to the extending direction of the second casing 122 , and the first casing 121 and the second casing 122 of the insulating casing 12 are integrally formed, so that the insulation can be improved. Structural strength of shell 12.

In this embodiment, the first housing 121 is provided with a communication cavity 1211 , that is, an installation structure for installing the second connection portion 22 of the copper bar 2 is provided in the first housing 121 , and the installation structure encloses the communication cavity 1211 . It can be understood that the installation structure part of the first shell 121 is located in the installation cavity 1221 of the second shell 122, and there is an installation platform in parallel, so that the first connection portion 21 of the copper bar 2 is limited to the installation platform. In order to avoid the installation of the first fastener 5, the installation platform initially has escape holes.

In this embodiment, as shown in FIG. 3 , the installation cavity 1221 of the second casing 122 is formed by being surrounded by the outer wall of the casing of the second casing 122 . In order to facilitate the cable passing through the second communication port 113 and extending into the installation cavity 1221 to be connected to the slot 321 of the copper terminal 3, the second housing 122 is provided with a via hole 1222 corresponding to the second communication port 113, so that each copper terminal is provided with a via hole 1222. The slot 321 of 3 is disposed opposite to a via hole 1222 and a second communication port 113 .

In one embodiment, as shown in FIG. 2 , FIG. 3 and FIG. 4 , the side of the housing 11 facing away from the first communication port 112 is provided with a first opening 114 communicating with the cavity 111 , and the second housing 122 corresponds to the first opening 114 . The opening 114 is provided with a second opening 1223. The housing assembly 1 further includes an upper pressure cover 13 and an insulating cover 14. The insulating cover 14 is detachably covered with the second opening 1223, and the upper pressure cover 13 is detachably covered with the first opening 1223. Opening 114 .

It can be understood that, the first opening 114 and the second opening 1223 are disposed opposite to each other, and the size and structural outline of the first opening 114 and the second opening 1223 are similar. The arrangement of the first opening 114 and the second opening 1223 is beneficial for the housing assembly 1 of the junction box 100 to install the copper bar 2 and the copper terminal 3 through the first opening 114 and the second opening 1223 .

In this embodiment, the upper pressing cover 13 and the insulating cover 14 may be provided as separate bodies, which facilitates disassembly and assembly. Of course, the upper pressing cover 13 and the insulating cover 14 can also be configured as an integral structure, so that the first opening 114 and the second opening 1223 can be covered at the same time, so as to improve the structural strength of the upper pressing cover 13 and the insulating cover 14, and also facilitate the casing The processing and production of the body assembly 1 is also beneficial to improve the waterproof and sealing performance of the casing assembly 1 .

It can be understood that the insulating cover 14 serves to cover and seal the second opening 1223 , and the upper pressing cover 13 serves to cover and seal the first opening 114 . In this embodiment, the insulating cover 14 and the second housing 122 may adopt a detachable connection manner such as snap connection, plug fit, screw connection, pin connection or screw connection, which is not limited herein. The upper pressing cover 13 and the housing 11 may adopt detachable connection methods such as snap connection, plug-in fitting, screw connection, pin connection or screw connection, which are not limited herein.

In one embodiment, as shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the housing assembly 1 further includes a plurality of tail cover assemblies 15 , and each tail cover assembly 15 is detachably provided at a second communication port. At 113 , each tail cover assembly 15 is provided with a socket that communicates with a second communication port 113 .

In this embodiment, the tail cover assembly 15 is used to protect and fix the copper terminal 3, and is also used to fix the cable. The tail cover assembly 15 is detachably covered with the second communication port 113 , and the tail cover assembly 15 is provided with a socket corresponding to the second communication port 113 .

As shown in FIG. 2 , FIG. 3 and FIG. 4 , the tail cap assembly 15 includes a tail cap 151 , a wire sealing body 152 , a shielding ring 153 and a baffle 154 , a boss is provided in the second communication port 113 , and the shielding ring 153 is provided on the The second communication port 113 is in limited contact with the boss, the wire sealing body 152 partially extends into the second communication port 113, the baffle 154 is located between the wire sealing body 152 and the shielding ring 153, and the tail cap 151 is sleeved It is attached to the wire sealing body 152 and is connected to the outer wall of the second communication port 113 .

It can be understood that the tail cap 151 is used to fix the wire sealing body 152, the shielding ring 153 and the baffle 154 in the second communication port 113 of the housing 11, and the shielding ring 153 and the wire sealing body 152 are used to shield and isolate the cable from the The housing 11 is in direct contact. In this embodiment, the tail cap 151 and the housing 11 may adopt a detachable connection manner such as snap connection, plug fit, screw connection, pin connection or screw connection, which is not limited herein.

It can be understood that by arranging the baffle 154 and the wire sealing body 152 between the copper terminal 3 and the tail cap 151, the baffle 154 and the wire sealing body 152 can be used to further protect the copper terminal 3, and at the same time, the tail cap 151 and the wire sealing body 152 can be further protected. Tightness between housings 11 . In this embodiment, the boss in the second communication port 113 is beneficial to prevent the baffle 154 from contacting the copper terminal 3 , thereby protecting the copper terminal 3 .

In one embodiment, as shown in FIG. 3 , the casing 11 is provided with a limiting stage 115 at the first communication port 112 , the outer wall of the first casing 121 is provided with a limiting step 1213 , and the limiting step 1213 is limited by the limiting stage 115 . bit abutment.

It can be understood that by disposing the limiting platform 115 at the first communication port 112 of the housing 11 and setting the limiting step 1213 on the outer wall of the first housing 121 of the insulating housing 12 , the insulating housing 12 is installed in the housing of the housing 11 . When inside the cavity 111 , the limit cooperation of the limit platform 115 and the limit step 1213 can be used to realize the limit installation of the insulating shell 12 and improve the installation stability of the outer shell 11 and the insulating shell 12 .

In one embodiment, as shown in FIGS. 2 , 3 and 4 , the housing 11 is provided with a groove 116 around the first opening 114 , and the housing assembly 1 further includes a sealing ring 16 , and the sealing ring 16 is accommodated in the groove 116 , and abuts with the upper pressing cover 13 .

It can be understood that the sealing performance between the casing 11 and the upper gland 13 can be effectively improved by arranging the sealing ring 16 . By arranging the groove 116 on the housing 11 , the sealing ring 16 can be installed in a limited position by using the groove 116 , thereby further improving the sealing effect of the upper gland 13 for sealing the first opening 114 .

In one embodiment, as shown in FIG. 2 and FIG. 3 , the first housing 121 is further provided with a mounting hole 1214 communicating with the communication cavity 1211 , the second connecting portion 22 is provided with a through hole 221 corresponding to the mounting hole 1214 , and the second connection The part 22 is connected to the first housing 121 through the mounting hole 1214 and the through hole 221 by the second fastener 6 .

In this embodiment, by setting the mounting hole 1214 on the insulating shell 12 and setting the through hole 221 on the second connecting portion 22 of the copper bar 2, the second fastener 6 can be used to pass through the mounting hole 1214 and the through hole. 221 , to realize the connection between the second connection portion 22 and the first housing 121 , thereby improving the connection stability of the copper bar 2 and the insulating shell 12 .

It can be understood that the extending direction of the mounting hole 1214 is perpendicular to the extending direction of the communication cavity 1211 (ie, the extending direction of the second connecting portion 22 ). The second fastener 6 can be optionally a structure such as a screw, a bolt or a pin. The mounting hole 1214 or the through hole 221 can be optionally a threaded hole or a countersunk hole. In this embodiment, the through hole 221 is a through hole structure, the installation hole 1214 consists of two parts, the two parts of the installation hole 1214 are located on opposite sides of the communication cavity 1211 respectively, and the second fastener 6 passes through the installation hole 1214 in sequence The first part, the through hole 221 , and the second part of the mounting hole 1214 are threadedly connected to the inner wall of the second part of the mounting hole 1214 , so as to lock the second connection part 22 of the copper bar 2 and the insulating shell 12 .

In the present embodiment, the junction box 100 is combined with copper bars 2, using the first connection portion 21 and the second connection portion 22 arranged at an angle between the copper bars 2, and with a plurality of copper terminals 3, which effectively avoids the wiring of cables. Bending simplifies the wiring operation of the junction box 100 . At the same time, by using the copper bar 2 structure, a plurality of copper terminals 3 are connected in parallel, thereby effectively improving the current carrying capacity of the junction box 100, so that the current carrying capacity of the junction box 100 is increased by 40%, and using the flat structure of the copper bar 2, there are It is beneficial for the junction box 100 to dissipate heat when a large current is carried. Further, by providing the integrated structure of the upper pressing cover 13 and the insulating cover 14 in the housing assembly 1, it is convenient to realize the installation of the copper bar 2 and the copper terminal 3 through the first opening 114 of the housing 11 and the second opening 1223 of the insulating shell 12 , improve the assembly efficiency. At the same time, by utilizing the structure of the slot 321 of the copper terminal 3, when the junction box 100 is assembled with the cable, it can be assembled without disassembling the tail cover assembly 15, which further improves the assembly efficiency. Through the combination of the tail cover assembly 15 and the copper terminals 3, the junction box 100 can effectively prevent the cable from biasing the wire sealing body 152 of the tail cover assembly 15 after wiring, thereby improving the overall waterproof level of the junction box 100, making the junction box 100 The protection level reaches IP68. The junction box 100 proposed by the present invention not only improves the current carrying capacity by 40%, but also has the advantages of excellent heat dissipation, low temperature rise, easy wiring, waterproof level up to IP68, and simple assembly operation.

In this embodiment, when the junction box 100 is assembled, the first connecting portion 21 of the copper bar 2 and the plurality of copper terminals 3 are locked by the first fastener 5 first, and the second connecting portion 22 of the copper bar 2 is locked. The limit is assembled in the communication cavity 1211 of the insulating shell 12 , and the second connecting part 22 of the copper bar 2 is locked on the insulating shell 12 by the second fastener 6 . Install the assembled insulating case 12 , the copper bar 2 and the copper terminal 3 in the cavity 111 of the housing 11 , and install the thermistor 4 on the insulating case 12 extending out of the first communication port 112 of the housing 11 . in slot 1212. The sealing ring 16 is installed in the groove 116 of the casing 11 adjacent to the first opening 114 , the insulating cover 14 is sealed at the second opening 1223 of the insulating casing 12 , and the upper pressing cover 13 is crimped on the first opening of the casing 11 . An opening 114 is in contact with the sealing ring 116 . Then install the shielding ring 153 , the baffle 154 , the wire sealing body 152 and the tail cap 151 of the tail cover assembly 15 on the second communication port 113 of the housing 11 in sequence, and then pass the cable through the socket of the tail cover assembly 15 . , the second communication port 113 is inserted into the slot 321 of the copper terminal 3, and the assembly of the junction box 100 can be completed.

The present invention also provides an electric vehicle, which includes a vehicle body and a junction box 100 disposed on the vehicle body. The specific structure of the junction box 100 refers to the foregoing embodiments. All technical solutions have at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, and will not be repeated here.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the conception of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A junction box applied to an electric vehicle, characterized in that the junction box comprises:

the shell assembly is provided with an installation cavity and a communication cavity communicated with the installation cavity;

the copper bar comprises a first connecting part and a second connecting part which are arranged at an included angle, the first connecting part is accommodated in the installation cavity, and the second connecting part is limited in the communicating cavity and extends out of the communicating cavity; and

the copper terminals are accommodated in the mounting cavity, each copper terminal is provided with a slot, and one end, far away from the slots, of each copper terminal is connected with the first connecting part, so that the copper terminals are arranged in parallel at intervals.

2. The connector of claim 1, wherein the first connecting portion has a plurality of first connecting holes spaced apart from each other, a second connecting hole is formed at an end of each of the copper terminals away from the slot, and each of the copper terminals is connected to the first connecting portion by a first fastening member passing through the second connecting hole and the first connecting hole.

3. The junction box of claim 2, wherein a junction of the first connection portion and the second connection portion is rounded.

4. The connector of claim 2, wherein each of the copper terminals includes a fixing portion and an inserting portion connected to each other, the inserting portion is provided with the inserting groove at an end facing away from the fixing portion, the fixing portion is provided with the second connecting hole, and an axial direction of the second connecting hole is perpendicular to a groove opening direction of the inserting groove.

5. The junction box according to any one of claims 1 to 4, wherein a mounting groove is further formed in the housing assembly adjacent to the communication chamber, the junction box further comprises a thermistor, one end of the thermistor is accommodated and limited in the mounting groove, and the other end of the thermistor is arranged in parallel with one end of the second connecting portion extending out of the communication chamber.

6. The junction box of any one of claims 1 to 4, wherein the housing assembly comprises:

the shell is provided with a containing cavity, a first communication port and a plurality of second communication ports, wherein the first communication ports and the plurality of second communication ports are communicated with the containing cavity; and

the insulating casing holds and is spacing in hold the intracavity, the insulating casing is including being first casing and the second casing that the contained angle set up, first casing is kept away from the one end of second casing stretches out first intercommunication mouth, first casing is equipped with the intercommunication chamber, the second casing is equipped with the installation cavity, the second casing is kept away from the one end of first casing corresponds each the second intercommunication mouth is equipped with the via hole, each via hole and one the slot is just to setting up.

7. The junction box according to claim 6, wherein a first opening communicating with the receiving cavity is formed in a side of the housing facing away from the first communication port, a second opening corresponding to the first opening is formed in the second housing, the housing assembly further comprises an upper cover and an insulating cover, the insulating cover is detachably covered on the second opening, and the upper cover is detachably covered on the first opening.

8. The connector of claim 7, wherein said housing assembly further comprises a plurality of tail cap assemblies, each of said tail cap assemblies being removably disposed at one of said second communication ports, each of said tail cap assemblies being provided with a socket for communicating with one of said second communication ports;

and/or the shell is provided with a limiting table at the first communication port, the outer wall of the first shell is provided with a limiting step, and the limiting step is in limiting butt joint with the limiting table;

and/or, the shell encircles the first opening and is equipped with the recess, casing assembly still includes the sealing washer, the sealing washer hold in the recess, and with go up the gland butt.

9. The junction box according to claim 7, wherein the first housing is further provided with a mounting hole communicating with the communication chamber, the second connecting portion is provided with a through hole corresponding to the mounting hole, and the second connecting portion is connected to the first housing by a second fastening member passing through the mounting hole and the through hole.

10. An electric vehicle, characterized by comprising a vehicle body and a junction box provided to the vehicle body, the junction box being the junction box according to any one of claims 1 to 9.

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