High-voltage junction box and vehicle

Abstract

The utility model discloses a high-voltage junction box, which comprises a high-voltage junction box body and a supporting seat, the high-voltage junction box body is provided with a mounting cavity, the high-voltage junction box body is provided with a functional port communicated to the mounting cavity, and the supporting seat can be controlled to move into or out of the mounting cavity through the functional port; a fuse is arranged on the supporting seat; the high-voltage distribution box further comprises an end cover arranged on the high-voltage distribution box body, and the end cover can open or close the functional port. The structure of the current high-voltage junction box can be optimized, so that the fuse in the high-voltage junction box can be more efficiently and conveniently disassembled, assembled and maintained compared with the current structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle and its accessories, concretely relates to a high voltage distribution box and vehicle. BACKGROUND

[0002] In the electric vehicle or hybrid vehicle, the main task of the high voltage distribution system is to reasonably distribute the high voltage power from the power battery to various high voltage electrical equipment, such as motor controller, drive motor, electric air conditioning compressor, PTC heater and DC / DC converter, etc.

[0003] The high voltage distribution system is composed of multiple key components, including distribution box (also known as high voltage distribution unit, high voltage electrical box, etc.), DC charging interface, AC charging interface and various high voltage wire harnesses. The distribution box plays a role similar to the fuse box in the low voltage power supply system, which not only can distribute the high voltage power output by the power battery, but also has overload and short circuit protection functions, thereby ensuring the safe operation of the high voltage circuit.

[0004] The distribution box will distribute power to key equipment such as motor controller, air conditioning compressor and PTC heater. The existing high voltage distribution box is mostly through product cover plate windowing or product main shell side wall windowing, and through the window space to realize the installation and maintenance of high voltage distribution and fuse; for an integrated product cover plate, the cover plate windowing structure is not allowed, if the high voltage distribution is installed and the integrated cover plate is installed, there is a problem that the customer cannot normally maintain the fuse; if the main shell side wall is windowed, the mounting bolt is easily dropped into the main shell due to gravity, and the dropped bolt can be taken out only after the product cover plate is opened as a whole, which affects the mounting efficiency.

[0005] Therefore, in order to solve the above problems, a high voltage distribution box and vehicle are needed, which can optimize the structure of the current high voltage distribution box, so that the fuse and the wiring end in the high voltage distribution box can be more efficiently and conveniently disassembled and maintained compared with the current structure. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims to overcome the defects in the prior art, provide a high voltage distribution box and vehicle, which can optimize the structure of the current high voltage distribution box, so that the fuse and the wiring end in the high voltage distribution box can be more efficiently and conveniently disassembled and maintained compared with the current structure.

[0007] The high voltage distribution box of the utility model, including high voltage distribution box body and support seat, the high voltage distribution box body has installation cavity, the high voltage distribution box body is equipped with the function mouth that leads to installation cavity, the support seat can be controlled and moves to installation cavity or outside installation cavity through function mouth;

[0008] The support seat is provided with a fuse;

[0009] Further comprising an end cover arranged on the high-voltage distribution box body, the end cover being capable of opening or closing the functional port.

[0010] Further, a limiting assembly is arranged on the high-voltage distribution box body, and a limiting piece is arranged on the support seat.

[0011] The support seat is limited by the limiting piece on the limiting assembly of the high-voltage distribution box body, or is released from the limiting of the limiting assembly.

[0012] Further, the limiting assembly comprises a limiting block arranged in the mounting cavity, and the limiting block comprises a front locking edge in the sliding direction of the sliding block.

[0013] The limiting piece comprises a locking hook, and the locking hook is limited by the locking edge or is released from the limiting of the locking edge through the displacement of the support seat on the guide rail.

[0014] Further, the limiting block further comprises a rear functional groove in the sliding direction of the sliding block.

[0015] The limiting piece further comprises a supporting end and a pushing end, the supporting end being connected to the support seat between the pushing end and the locking hook, the locking hook being located in front of the supporting end in the sliding direction of the sliding block, and the pushing end being located behind the supporting end.

[0016] The locking hook is controlled to approach the locking edge through the functional groove and is limited by the locking edge.

[0017] After the locking hook is limited by the locking edge, the pushing end is located at the notch of the functional groove, and the pushing end is controlled to approach the groove of the functional groove to make the locking hook disengage from the locking edge and be released from the limiting.

[0018] Further, a guide assembly is further included, the guide assembly comprising a guide rail and a sliding block, the guide rail being arranged in the mounting cavity, and the sliding block being arranged on the support seat.

[0019] The support seat is driven by the sliding block to displace on the guide rail arranged in the mounting cavity.

[0020] Further, the functional port is located on the longitudinal side wall of the high-voltage distribution box body, and the support seat is driven to displace in the longitudinal direction and is arranged in the mounting cavity.

[0021] The limiting assembly further comprises a stroke limiting arm arranged at the end of the guide rail, the stroke limiting arm being used to limit the displacement stroke of the support seat in the mounting cavity.

[0022] Further, an electrical connection terminal is further included, the electrical connection terminal comprising an electrical connection wire harness and an electrical connection port, the electrical connection port being fixed on the outer wall of one side of the high-voltage distribution box body.

[0023] The wiring harness includes a pair of positive and negative wires arranged at the power connection port, and the support base is provided with a pair of positive and negative copper busbars.

[0024] The positive and negative wires are introduced into the mounting cavity and connected to the positive and negative copper busbars respectively. The positive wires and the positive copper busbars are connected by a fuse.

[0025] Furthermore, it also includes a connection terminal, which includes a fixed base disposed in the mounting cavity and a pair of positive and negative conductive springs disposed in the fixed base;

[0026] After the support base is moved into the mounting cavity, the positive and negative conductive springs are connected to the positive and negative copper busbars respectively. The positive and negative conductive springs have elastic forces that move towards the positive and negative copper busbars respectively.

[0027] Furthermore, the terminals of the positive and negative wires are respectively mounted on the support base by screws, and the terminals of the positive and negative wires each have the degree of freedom to rotate in the installation position as the support base moves.

[0028] This solution also discloses a vehicle that uses the aforementioned high-voltage junction box.

[0029] The beneficial effects of this utility model are as follows: The high-voltage junction box and vehicle disclosed in this utility model, by setting a support seat that can be controlled to move into or out of the mounting cavity, realizes the external installation and removal of fuses and internal protection. Compared with the current high-voltage junction boxes, it can more efficiently and conveniently install, remove and maintain fuses on the high-voltage junction box body. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0033] Figure 3 This is a schematic diagram of the structure of the support base of this utility model inside the mounting cavity;

[0034] Figure 4 This utility model Figure 3 A top-view structural diagram;

[0035] Figure 5This is a schematic diagram of the support base of this utility model outside the mounting cavity;

[0036] Figure 6 This utility model Figure 4 A top-view structural diagram;

[0037] Figure 7 This is a schematic diagram of the structure of the support base of this utility model. Figure 1 ;

[0038] Figure 8 This is a schematic diagram of the structure of the support base of this utility model. Figure 2 ;

[0039] Figure 9 This is a schematic diagram of the box-shaped main body of this utility model;

[0040] Figure 10 This utility model Figure 9 Top view;

[0041] Figure 11 This utility model Figure 9 Schematic diagram of the cross-sectional structure along the AA direction.

[0042] Reference numerals: 1. Box-shaped body; 101. Functional port; 2. Cover plate; 3. End cap; 4. Electrical terminal; 5. Fuse; 6. Support base; 7. Fixing base; 8. Handle; 9. First guide rail; 10. Second guide rail; 11. First slider; 12. Second slider; 13. Travel limit arm; 14. Locking hook; 15. Actuating end; 16. Support end; 17. Limiting block; 18. Functional slot; 19. Locking ridge; 20. Positive conductive spring; 21. Negative conductive spring; 22. Positive wiring copper busbar; 23. Negative wiring copper busbar. Detailed Implementation

[0043] This solution discloses a high-voltage junction box, such as Figures 1 to 8 As shown, it includes a high-voltage junction box body and a support base 6. The high-voltage junction box body has an installation cavity and a functional port 101 connected to the installation cavity. The support base 6 can be controlled to move into or out of the installation cavity through the functional port 101. A fuse 5 is provided on the support base 6 and the fuse 5 is detachably installed on the support base 6 by screws.

[0044] This solution is applicable to high-voltage junction boxes with integrated product covers. In an exemplary embodiment, the high-voltage junction box body includes a box-shaped main body 1 with an open top of the mounting cavity and a cover 2 that closes the open top of the mounting cavity. The box-shaped main body 1 has a rectangular cubic structure. The longitudinal direction corresponds to the width direction of the box-shaped main body 1. The direction in which the longitudinal support 6 approaches the mounting cavity is front, and the opposite direction is back. The transverse direction corresponds to the length direction of the box-shaped main body 1, and the height direction corresponds to the height direction of the box-shaped main body 1. These details will not be elaborated further here.

[0045] In this embodiment, the high-voltage junction box also includes a power connection terminal 4, which includes a power connection harness and a power connection port. The power connection port of the power connection terminal 4 is fixed on the outer wall of one side of the high-voltage junction box body and is used to connect a preset electrical appliance. The power connection harness includes a pair of positive and negative wires arranged at the power connection port. A pair of positive and negative copper busbars 22 and negative copper busbars 23 are arranged on the support base 6. The positive and negative wires are introduced into the mounting cavity and communicate with the positive and negative copper busbars 22 and 23 respectively. The positive wire and the positive copper busbar 22 are connected by a fuse 5.

[0046] The terminals for the positive and negative wires on the support base 6 are selected as O-type terminals and are detachably mounted on the support base 6 by screws. This allows the positive and negative wires to rotate freely in their respective installation positions as the support base 6 moves, thereby shortening the wiring length of the positive and negative wires and reducing costs.

[0047] In this embodiment, the high-voltage junction box also includes a connection terminal disposed within the mounting cavity. The connection terminal and the power connection end are laterally opposite each other, and the support base 6 is located between the connection terminal and the power connection end. The connection terminal includes a fixed base 7 disposed within the mounting cavity and a pair of positive conduction springs 20 and negative conduction springs 21 disposed on the fixed base 7. Of course, the high-voltage junction box of this solution also includes a control module not shown in the figure. The control module includes filters, thin-film capacitors, and three-phase power modules, etc., to realize the intended functions of the high-voltage junction box. The positive conduction springs 20 and negative conduction springs 21 are electrically connected to the control module within the mounting cavity, which will not be described in detail here. After the support base 6 is moved into the mounting cavity, the positive conduction springs 20 and negative conduction springs 21 are connected to the positive terminal copper busbar 22 and the negative terminal copper busbar 23, respectively. The positive conduction springs 20 and negative conduction springs 21 have elastic forces that move towards the positive terminal copper busbar 22 and the negative terminal copper busbar 23, respectively. The separate design of the connecting terminal, fuse 5, and power connection terminal 4 improves the safety of power connection and the safety of assembling and disassembling components mounted on the support base 6.

[0048] In this embodiment, the functional port 101 is opened on the circumferential sidewall of the box-shaped main body 1, communicating with the mounting cavity. This allows the support base 6 to be moved circumferentially within or outside the mounting cavity by a push-pull mechanism, enabling convenient installation and efficient maintenance of the high-voltage branch line and fuse 5. By providing a controllable support base 6 that can be moved within or outside the mounting cavity, the fuse 5 and wiring harness can be installed and removed externally and protected internally. Compared to current high-voltage branch boxes, this method allows for more efficient and convenient installation, removal, and maintenance of the fuse 5 and wiring harness on the high-voltage branch box body.

[0049] Preferably, the function port 101 is opened on the side wall of the box-shaped body 1, and the wiring port of the power connection terminal 4 is set on the lateral side wall of the mounting cavity to reduce the interference between the support base 6 and the power connection element and ensure the convenient assembly of the support base 6 on the high voltage junction box body.

[0050] In this embodiment, the high-voltage junction box also includes an end cover 3 disposed on the body of the high-voltage junction box. The end cover 3 can open or close the function port 101. When the function port is closed, the end cover 3 seals the function port, thereby isolating the installation cavity from the external environment, forming protection for the various components assembled in the installation cavity, and improving the safety of the high-voltage junction box.

[0051] A handle 8 is provided on the side of the support base 6 near the end cover 3. The handle 8 allows the support base 6 to be easily pulled out of the mounting cavity or pushed back into the mounting cavity.

[0052] In this embodiment, a limiting component is provided on the high-voltage junction box body, and a limiting element is provided on the support base 6. The support base 6 is limited by the limiting component on the high-voltage junction box body, or is released from the limiting component. This solution, by setting a cooperating limiting component and limiting element, controls the limiting or releasing of the support base 6 on the high-voltage junction box body, which can improve the reliability of the support base 6 on the high-voltage junction box body, thereby improving the structural stability of the fuse 5 and the wiring harness installed on the support base 6, and enhancing safety protection performance.

[0053] The matching structure of the limiting component and the limiting part includes a detachable locking structure with bolt and nut, a snap-fit ​​connection structure, or a structure in which the gripper unfolds and retracts to limit or release the limiting part, etc. It is preferable to have a structure that allows the high voltage junction box body to controllably limit or release the limiting position of the support base 6, which will not be elaborated here.

[0054] In this embodiment, the high-voltage junction box further includes a guide assembly, which includes a guide rail and a slider. The guide rail is disposed within the mounting cavity, and the slider is disposed on the support base 6. The support base 6 is moved along the guide rail disposed within the mounting cavity by being driven by the slider. This makes the movement of the support base 6 within and outside the mounting cavity more stable, reduces interference with the fuse 5 and the electrical terminal 4 mounted on the support base 6, prevents collisions of components or even electrical runaway caused by external factors, and improves the safety of the high-voltage junction box.

[0055] The guide rails and sliders in the guide assembly can be repositioned according to the usage, or the guide assembly can be replaced by a walking guide structure such as a chain or track to achieve the function of guiding the support 6 in the installation cavity. This will not be elaborated further here.

[0056] In one exemplary embodiment, the guide rail also has the function of limiting the slider, such as... Figure 5and Figure 6 As shown, the function port 101 is located on the longitudinal side wall of the high-voltage junction box body, and the support base 6 is driven to be longitudinally displaced in the mounting cavity; the guide rail includes a first guide rail 9 and a second guide rail 10 arranged parallel to the longitudinal direction in the mounting cavity, and the slider includes a first slider 11 limited in the lateral direction by the first guide rail 9 and a second slider 12 limited in the height direction by the second guide rail 10. The lateral and longitudinal directions are perpendicular to each other on the horizontal plane, and the height direction is perpendicular to both the lateral and longitudinal directions.

[0057] The first guide rail 9 and the second guide rail 10 are located on the bottom inner wall of the mounting cavity, and the first slider 11 and the second slider 12 are located on the bottom outer wall of the support base 6. The first guide rail 9 and the second guide rail 10 respectively limit the corresponding positions of the first slider 11 and the second slider 12, so that the support base 6 can be stably driven to move longitudinally into or out of the mounting cavity.

[0058] In this embodiment, the limiting component further includes a travel limiting arm 13 for limiting the displacement stroke of the support base 6. The travel limiting arm 13 is disposed at the end of the guide rail, so that the movement stroke of the support base 6 within the mounting cavity is limited, thereby improving the operational reliability of the support base 6. In this solution, as... Figures 3 to 6 As shown, the travel limit arm 13 is located at the end of the first guide rail 9 and limits the travel of the first slider 11, thereby limiting the travel of the support 6.

[0059] In an exemplary embodiment, the limiting component includes a limiting stop 17 disposed within the mounting cavity, and the limiting stop 17 along the slider displacement direction includes a locking ridge 19 at the front and a functional groove 18 at the rear.

[0060] The limiting component includes a locking hook 14, a support end 16, and a toggle end 15. The support end 16 is located between the toggle end 15 and the locking hook 14 and is connected to the support base 6. The locking hook 14 is located in front of the support end 16 along the slider displacement direction, and the toggle end 15 is located behind the support end 16. The locking hook 14 is limited to or released from the locking edge 19 by the displacement of the support base 6 on the guide rail.

[0061] More specifically, such as Figure 2 , Figure 7 and Figure 8 As shown, the limiting block 17 includes a rectangular strip structure extending along the width direction of the box-shaped body 1 on the bottom wall of the mounting cavity. A locking ridge 19 is formed at the intersection of the front and top surfaces of the limiting block 17. Figure 9 , Figure 10 and Figure 11 As shown, a functional groove 18 parallel to the extension direction of the limiting block 17 is opened at the rear end of the limiting block 17. The front wall surface of the inner side of the functional groove 18 slopes upward from back to front. The rear end of the functional groove 18 is open to avoid the limiting member.

[0062] The locking hook 14 is set at the bottom of the support base 6 via the support end 16. The locking hook 14 and the actuating end 15 are longitudinally opposite each other, and the support end 16 is located between the locking hook 14 and the actuating end 15, so that the limiting member forms a lever structure with the support end 16 as the fulcrum. The locking hook 14 forms a cantilever structure in the longitudinal direction away from the support end 16. The locking hook 14 is controlled to approach the locking ridge 19 through the functional groove 18 and is limited by the locking ridge 19. Due to the setting of the functional groove 18, when the support base 6 is located outside the mounting cavity, the locking hook 14 of the limiting member is hidden in the functional groove 18. In this state, the support base 6 can be directly pushed into the mounting cavity. With the cooperation of the guide rail and the slider, the support base 6 is smoothly guided into the mounting cavity. After the locking hook 14 reaches the designated position, the locking hook 14 naturally falls and cooperates with the locking ridge 19. Under the joint action of the travel limiting arm 13 in this scheme, the longitudinal limitation of the support base 6 is completed.

[0063] After the locking hook 14 is limited by the locking ridge 19, the actuating end 15 is located at the opening of the functional slot 18. The actuating end 15 is controlled to move closer to the slot of the functional slot 18 so that the locking hook 14 disengages from the locking ridge 19 and is released from its limitation. With the support base 6 located inside the mounting cavity, the locking hook 14 is raised by operating the actuating end 15 to disengage from the locking ridge 19. Then, the support base 6 is removed from the mounting cavity, enabling quick assembly and disassembly of the support base 6 from the high-voltage junction box body.

[0064] In this embodiment, the limiting block 17 is located between the first guide rail 9 and the second guide rail 10, and the locking ridge 19 is located on the longitudinal rear side of the travel limiting arm 13. The overall structure is more compact, and under the guidance of the first guide rail 9 and the second guide rail 10, the cooperation between the limiting block 17 and the limiting member is more stable. In addition, the first guide rail 9 and the second guide rail 10 also have the ability to limit the support 6 in the height direction and the lateral direction. Together with the locking ridge 19 and the travel limiting arm 13 that limit the limiting member in the longitudinal direction, the reliability of the support 6 being limited in the mounting cavity is improved.

[0065] This solution also discloses a vehicle that uses a high-voltage junction box. The support 6, which can be controlled to move inside or outside the mounting cavity, allows for the external installation and removal of electrical components mounted on the support 6, as well as internal protection. Compared to current high-voltage junction boxes, this method enables more efficient and convenient installation, removal, and maintenance of the fuse 5 and the power terminal 4 from the high-voltage junction box body.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-voltage junction box, characterized in that: It includes a high-voltage junction box body and a support base (6). The high-voltage junction box body has an installation cavity. The high-voltage junction box body has a functional port that connects to the installation cavity. The support base (6) can be controlled to move through the functional port (101) to the inside or outside of the installation cavity. A fuse (5) is provided on the support base (6); It also includes an end cap (3) disposed on the high voltage junction box body, the end cap (3) being able to open or close the function port (101).

2. The high-voltage junction box according to claim 1, characterized in that: The high-voltage junction box body is provided with a limit component, and the support base (6) is provided with a limit element; The support base (6) is limited to the limiting component of the high voltage junction box body by the limiting member, or is released from the limiting component.

3. The high-voltage junction box according to claim 2, characterized in that: The limiting component includes a limiting block (17) disposed in the mounting cavity, and the limiting block (17) includes a locking ridge (19) in front along the slider displacement direction. The limiting component includes a locking hook (14), which is limited to or released from the locking edge (19) by the displacement of the support base (6) on the guide rail.

4. The high-voltage junction box according to claim 3, characterized in that: The limiting block (17) along the slider displacement direction also includes a rear functional slot (18). The limiting component also includes a support end (16) and a toggle end (15). The support end (16) is located between the toggle end (15) and the locking hook (14) and is connected to the support base (6). Along the slider displacement direction, the locking hook (14) is located in front of the support end (16), and the toggle end (15) is located behind the support end (16). The locking hook (14) is controlled to move toward the locking ridge (19) through the functional slot (18) and is limited by the locking ridge (19); After the locking hook (14) is limited by the locking ridge (19), the actuating end (15) is located at the opening of the functional groove (18). The actuating end (15) is controlled to move closer to the groove of the functional groove (18) so that the locking hook (14) disengages from the locking ridge (19) and is released from the limitation.

5. The high-voltage junction box according to claim 2, characterized in that: It also includes a guide assembly, which includes a guide rail and a slider, the guide rail being disposed within the mounting cavity and the slider being disposed on a support base; The support base (6) is moved on a guide rail set in the mounting cavity by a slider.

6. The high-voltage junction box according to claim 2, characterized in that: The functional port (101) is located on the longitudinal side wall of the high voltage junction box body, and the support base (6) is driven to be longitudinally displaced in the mounting cavity. The limiting component also includes a travel limiting arm (13) disposed at the end of the guide rail, the travel limiting arm (13) being used to limit the displacement travel of the support (6) within the mounting cavity.

7. The high-voltage junction box according to claim 1, characterized in that: It also includes a power connection terminal (4), which includes a power connection harness and a power connection port, and the power connection port is fixed on the outer wall of one side of the high voltage junction box body; The wiring harness includes a pair of positive and negative wires arranged at the power connection port, and a pair of positive copper busbars (22) and negative copper busbars (23) are arranged on the support base (6). The positive and negative wires are introduced into the mounting cavity and connected to the positive terminal copper busbar (22) and the negative terminal copper busbar (23) respectively. The positive wire and the positive terminal copper busbar are connected through the fuse (5).

8. The high-voltage junction box according to claim 7, characterized in that: It also includes a connection terminal, which includes a fixed base (7) disposed in the mounting cavity and a pair of positive conductive springs (20) and negative conductive springs (21) disposed in the fixed base (7). After the support base (6) is moved into the mounting cavity, the positive electrode contact spring (20) and the negative electrode contact spring (21) are connected to the positive electrode copper busbar (22) and the negative electrode copper busbar (23) respectively. The positive electrode contact spring (20) and the negative electrode contact spring (21) have elastic forces that move towards the positive electrode copper busbar (22) and the negative electrode copper busbar (23) respectively.

9. The high-voltage junction box according to claim 7, characterized in that: The terminals of the positive and negative wires are respectively set on the support base (6) by screws, and the terminals of the positive and negative wires have the degree of freedom to rotate in the installation position as the support base (6) moves.

10. A vehicle, characterized in that: The vehicle uses a high-voltage junction box as described in any one of claims 1-9.

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