High-voltage distribution box with insulating bracket for new energy automobile

Abstract

The utility model provides a high-voltage distribution box with an insulation support for a new energy automobile, which comprises a box body, the insulation support is arranged in the box body, the side surface of the box body is provided with at least one wiring port, the insulation support is fixedly connected with the box body, the insulation support comprises a bottom plate, fool-proof keys are arranged on the bottom plate, and an electric appliance assembly is arranged between the fool-proof keys. The electric appliance assembly is connected with an automobile circuit through the wiring port. The creepage distance between circuits is increased by using the insulating bracket, the high-voltage circuit is effectively isolated, the anti-electromagnetic interference performance is improved, the safety is improved, and the risks of short circuit and electric shock are reduced. Meanwhile, the compact box body design enables the size of the high-voltage distribution box to be smaller, the space layout and the weight control of the whole vehicle are facilitated, and the use of the insulating bracket is also beneficial to improving the production efficiency and reducing the manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution boxes, in particular to a high-voltage distribution box for new energy vehicles with an insulating bracket. Background Art

[0002] With the increasing global attention to environmental protection and sustainable development, new energy vehicles have gradually moved from the fringe to the mainstream. Among them, electric vehicles have been favored by a large number of consumers for their zero emissions, low noise, and high efficiency. However, the success of electric vehicles is not easy, and it requires the support of many complex technologies and components. Among them, the high-voltage distribution box is a key link. The high-voltage distribution box, as the "heart" responsible for power distribution and control in electric vehicles, its importance is self-evident. The high-voltage distribution box not only needs to ensure the efficient and stable transmission of electric energy, but also needs to ensure the safe operation of the vehicle in a complex and changeable environment. However, with the popularization of new energy vehicles and the continuous improvement of consumers' requirements for vehicle performance, the high-voltage distribution box is also facing unprecedented challenges.

[0003] First of all, the high-voltage distribution box has to face the inherent risks brought by high-voltage circuits. Due to the strong current, tiny design defects or operating errors may lead to serious accidents such as short circuits and electric shocks. This requires the high-voltage distribution box to have a high degree of insulation performance and safety design to effectively avoid electromagnetic interference, isolate the current, and prevent accidents in any situation. Secondly, the existing high-voltage distribution box structures are often relatively complex and the volume is relatively large. This not only increases the manufacturing cost, but also poses a certain pressure on the overall vehicle's space layout and weight control. In the trend of new energy vehicles pursuing lightweight and integration, the lightweight and miniaturization of the high-voltage distribution box have become an urgent need. In addition, with the rapid expansion of the electric vehicle market, users' requirements for vehicle performance are also getting higher and higher. The high-voltage distribution box not only needs to meet the basic power distribution and control functions, but also needs to have higher efficiency and stability to ensure the stable operation of the vehicle under various extreme conditions.

[0004] For example, the utility model with the application number 202220457126.1 provides a high-voltage distribution box for electric vehicles. Through the elastic reset function of the reset spring, the clamping block is clamped into or out of the clamping hole, so as to facilitate the disassembly and assembly between the high-voltage distribution box body and the cover plate, replacing the commonly used screw fixed connection method. When a fault occurs in the internal components of the high-voltage distribution box and needs to be disassembled, a special screwdriver is not required to disassemble the high-voltage distribution box body and the cover plate, avoiding time-consuming and laborious work and damage to the high-voltage distribution box body or the cover plate. The outer wall of the high-voltage distribution box body can be protected by the square frame itself from being impacted. When the high-voltage distribution box body is impacted, the impact force generated by the collision is maximally reduced by the anti-collision plate and the shock-absorbing spring, avoiding the problem that the box body of the high-voltage distribution box is deformed after being collided due to the lack of a protection device for the high-voltage distribution box. However, this utility model does not design the interior of the high-voltage distribution box, and cannot reasonably utilize the internal space of the distribution box, resulting in a relatively large volume of the high-voltage distribution box.

[0005] For example, the utility model with the application number 202220373643.0 discloses a high-voltage distribution box, which includes a high-voltage box and a battery management system. The battery management system is arranged in the high-voltage box. The high-voltage distribution box further includes a air pressure detection device, and the air pressure detection device is arranged in the high-voltage box. The air pressure detection device includes an air pressure sensor and a controller. The air pressure sensor is communicatively connected with the controller, and the controller is communicatively connected with the battery management system. The air pressure sensor is used to detect the air pressure information in the high-voltage box and send the air pressure information to the controller. The controller controls the on-off of the input circuit of the high-voltage box according to the received air pressure information and sends the air pressure information to the battery management system. The air pressure detection device installed in the high-voltage distribution box can quickly, comprehensively and reliably monitor the thermal failure monitoring in the battery pack system, can quickly and accurately monitor the conditions of the high-voltage box and the battery pack, and has a rapid response. The high-voltage distribution box has a simple structure, low development cost and wide application range. Although this utility model improves the safety of the high-voltage distribution box, it does not solve the problem of the relatively large volume of the distribution box. Utility Model Content

[0006] Aiming at the technical problems of the existing distribution box with a relatively large volume and high cost price, the utility model provides a high-voltage distribution box for new energy vehicles with an insulating bracket, which has a relatively small volume and strong safety.

[0007] In order to achieve the above purpose, the technical solution of the utility model is realized as follows: A high-voltage distribution box for new energy vehicles with an insulating bracket, characterized in that it includes a box body, at least one wiring port is arranged on the side of the box body, an insulating bracket is arranged in the box body, the insulating bracket is fixedly connected with the box body, the insulating bracket includes a bottom plate, anti-fool key positions are arranged on the bottom plate, electrical components are arranged between the anti-fool key positions, and the electrical components are connected to the vehicle circuit through the wiring port.

[0008] The electrical components include fuse I, fuse II, fuse III, relay I and relay II. Fuse I, fuse II, fuse III, relay I and relay II are all connected to the vehicle circuit. Fuse I, fuse II, fuse III, relay I and relay II are all connected to the insulating bracket through anti-fool key positions. One end of fuse I is connected to the vehicle circuit. One end of relay I, one end of fuse II and one end of fuse III are all connected to the other end of the fuse. The other ends of fuse II and fuse III are both grounded. The other end of relay I is connected to the vehicle circuit. Both ends of relay II are connected to the vehicle circuit.

[0009] The anti-fool key positions include at least one hollow, at least one baffle and at least one limiting rib. The hollow, baffle and limiting rib are all arranged on the bottom plate. A limiting rib is arranged on the front side of the bottom plate. Fuse I is arranged inside the limiting rib. Hollow I is arranged on the rear side of the limiting rib. Relay I is arranged inside hollow I. Two limiting ribs arranged side by side are arranged on the lower side of hollow I. Fuse II and fuse III are respectively arranged inside the two limiting ribs. Baffle I is arranged on the lower side of the two limiting ribs. Hollow II is arranged on the lower side of baffle I. Relay II is arranged inside hollow II. Baffle II is arranged on both sides and the lower side of hollow II.

[0010] Copper strip I is arranged on the lower side of one end of fuse I, the lower side of one end of fuse II, the lower side of one end of fuse III and the upper side of one end of relay I. Fuse I, fuse II, fuse III and relay I are all fixedly connected to copper strip I through screws. Copper strip I is connected to the wiring port on one side of the box body.

[0011] Copper strip II is arranged on the upper side of the other end of relay I. Copper strip II is fixedly connected to relay I through screws. Copper strip II is connected to the wiring port on the other side of the box body.

[0012] Copper strip III is arranged on the upper side of one end of relay II. Copper strip III is connected to the wiring port on the other side of the box body.

[0013] Copper strip IV is arranged on the upper side of the other end of relay II. Copper strip IV is connected to the wiring port on one side of the box body.

[0014] Opening I is arranged on the upper side of baffle I. Copper strip III is arranged inside opening I. Opening II is arranged on one side of baffle II. Copper strip IV is arranged inside opening II.

[0015] A fixing bracket is arranged at the bottom of the box body. The fixing bracket is connected to the vehicle.

[0016] The box body is a rectangular aluminum alloy box body, and the insulating bracket is a rectangular nylon insulating bracket.

[0017] The beneficial effects of the utility model are as follows:

[0018] First, the insulating bracket can effectively isolate the high-voltage circuit, improving safety and reducing the risks of short circuit and electric shock. Second, the compact box design makes the high-voltage distribution box smaller in size, facilitating the overall vehicle space layout and weight control. Finally, the use of the insulating bracket also helps to improve production efficiency and reduce manufacturing costs. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the insulating bracket of the present invention.

[0022] In the figure, 1 is a fuse, 2 is copper bar I, 11 is fuse I, 12 is fuse II, 13 is fuse III, 31 is relay I, 32 is relay II, 4 is copper bar II, 5 is copper bar III, 6 is copper bar IV, 7 is the insulating bracket, 81 is cutout I, 82 is cutout II, 91 is opening I, 92 is baffle I, 93 is baffle II, 94 is opening II. Detailed Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] As Figure 1 shown, a high-voltage distribution box for a new energy vehicle with an insulating bracket includes a box body. An insulating bracket 7 is arranged inside the box body. At least one wiring port is arranged on the side of the box body. Anti-fooling key positions are arranged on the insulating bracket 7, and electrical components are arranged between the anti-fooling key positions. The insulating bracket 7 is fixedly connected to the box body, and the electrical components are connected to the vehicle circuit through the wiring port.

[0025] Among them, the box body is mainly used to accommodate various electrical components in the high-voltage distribution box. The insulating bracket 7 is mainly used to reasonably plan the internal space of the box body while reducing the electromagnetic interference between various electrical components. The box body and the insulating bracket 7 are fixedly connected by screws. The box body is a rectangular aluminum alloy box body, which has a simple and stable structure, is resistant to high temperature and corrosion, and has a relatively low cost. The anti-fool key positions are mainly used to plan the directions of the copper bars and wire harnesses inside the high-voltage box, improve the production efficiency, and effectively prevent the generation of defective products caused by assembly.

[0026] The electrical components include fuse Ⅰ 11, fuse Ⅱ 12, fuse Ⅲ 13, relay Ⅰ 31 and relay Ⅱ 32. Fuse Ⅰ 11, fuse Ⅱ 12, fuse Ⅲ 13, relay Ⅰ 31 and relay Ⅱ 32 are all connected to the vehicle circuit. Fuse Ⅰ 11, fuse Ⅱ 12, fuse Ⅲ 13, relay Ⅰ 31 and relay Ⅱ 32 are all connected to the insulating bracket 7 through anti-fool key positions. One end of fuse Ⅰ 11 is connected to the vehicle circuit. One end of relay Ⅰ 31, one end of fuse Ⅱ 12 and one end of fuse Ⅲ 13 are all connected to the other end of fuse 1. The other ends of fuse Ⅱ 12 and fuse Ⅲ 13 are both grounded. The other end of relay Ⅰ 31 is connected to the vehicle circuit. Both ends of relay Ⅱ 32 are connected to the vehicle circuit. At least one embedded nut is provided on the bottom plate of the insulating bracket 7 for fixing the screws. The electrical components are fixedly connected to the bottom plate by bolts. Among them, the relay is used to control the on-off between the output interface of the power battery and the function interfaces corresponding to each electrical equipment, and the fuse is used to play a current-limiting protection role for the corresponding circuit. A fixing frame is provided at the bottom of the box body, and the fixing frame is connected to the vehicle.

[0027] As Figure 2 shown, the insulating bracket 7 is a rectangular nylon insulating bracket. The insulating bracket 7 includes a bottom plate. Anti-fool key positions are provided on the bottom plate. The anti-fool key positions include at least one hollow, at least one baffle and at least one limiting rib. The hollow, baffle and limiting rib are all provided on the bottom plate. A limiting rib is provided on the front side of the bottom plate. Fuse Ⅰ 11 is provided inside the limiting rib. Hollow Ⅰ 81 is provided on the rear side of the limiting rib. Relay Ⅰ 31 is provided inside hollow Ⅰ 81. Two limiting ribs arranged side by side are provided on the lower side of hollow Ⅰ 81. Fuse Ⅱ 12 and fuse Ⅲ 13 are respectively provided inside the two limiting ribs. Baffle Ⅰ 92 is provided on the lower side of the two limiting ribs. Hollow Ⅱ 82 is provided on the lower side of baffle Ⅰ 92. Relay Ⅱ 32 is provided inside hollow Ⅱ 82. Baffle Ⅱ 93 is provided on the two sides and the lower side of hollow Ⅱ 82. Installing the relay in the hollow not only limits the installation direction of the relay but also reduces the weight of the insulating bracket.

[0028] Under high-voltage conditions, due to the high levels of voltage and current, relatively strong electromagnetic interference will be generated between electrical components. Therefore, generally during installation, electrical components are required to be separated by a certain distance to prevent electromagnetic interference from affecting the normal operation and performance of the equipment. In this application, a baffle is provided in the insulating bracket 7 to isolate the electrical components in the high-voltage distribution box, increasing the creepage distance and electromagnetic interference resistance of the high-voltage box, reducing the installation distance between electrical components, improving the overall density of the high-voltage box, and reducing the volume of the high-voltage box. To further improve the space utilization rate of the high-voltage distribution box, limiting ribs and card slots are provided on the bottom plate to uniformly organize the wire harnesses of the electrical components within the limiting ribs and card slots. This not only prevents the wire harnesses from occupying excessive space but also avoids incorrect routing of the wire harnesses, protects the surface of the wire harnesses, effectively improves protection, and extends the service life.

[0029] On the lower side of one end of fuse I 11, the lower side of one end of fuse II 12, the lower side of one end of fuse III 13, and the upper side of one end of relay I 31, a copper strip I 2 is provided. Fuse I 11, fuse II 12, fuse III 13, and relay I 31 are all fixedly connected to copper strip I 2 by screws, and copper strip I 2 is connected to the wiring port on one side of the box body. On the upper side of the other end of relay I 31, a copper strip II 4 is provided. Copper strip II 4 is fixedly connected to relay I 31 by screws, and copper strip II 4 is connected to the wiring port on the other side of the box body. On the upper side of one end of relay II 32, a copper strip III 5 is provided. Copper strip III 5 is connected to the wiring port on the other side of the box body. On the upper side of the other end of relay II 32, a copper strip IV 6 is provided. Copper strip IV 6 is connected to the wiring port on one side of the box body. On the upper side of baffle I 92, an opening I 91 is provided, and copper strip III 5 is arranged within opening I 91. On one side of baffle II 93, an opening II 94 is provided, and copper strip IV 6 is arranged within opening II 94. Inside the high-voltage box, the copper strips and various electrical components are connected together by bolts. The copper strips play the roles of connecting the circuit, transmitting current, and dissipating heat. The insulating bracket 7 is made of nylon material, which has low cost, good insulation performance, strong plasticity, light weight, and is not easily deformed.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-voltage distribution box for new energy vehicles with an insulating bracket, characterized in that, It includes a box body. At least one wiring port is arranged on the side of the box body. An insulating bracket (7) is arranged inside the box body. The insulating bracket (7) is fixedly connected to the box body. The insulating bracket (7) includes a bottom plate. Anti-fool key positions are arranged on the bottom plate. Electrical components are arranged between the anti-fool key positions. The electrical components are connected to the vehicle circuit through the wiring port.

2. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 1, characterized in that, The electrical components include a fuse I (11), a fuse II (12), a fuse III (13), a relay I (31) and a relay II (32). The fuse I (11), the fuse II (12), the fuse III (13), the relay I (31) and the relay II (32) are all connected to the vehicle circuit. The fuse I (11), the fuse II (12), the fuse III (13), the relay I (31) and the relay II (32) are all connected to the insulating bracket (7) through the anti-fool key positions. One end of the fuse I (11) is connected to the vehicle circuit. One end of the relay I (31), one end of the fuse II (12) and one end of the fuse III (13) are all connected to the other end of the fuse (1). The other ends of the fuse II (12) and the fuse III (13) are both grounded. The other end of the relay I (31) is connected to the vehicle circuit. Both ends of the relay II (32) are connected to the vehicle circuit.

3. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 2, characterized in that, The anti-fool key positions include at least one hollow, at least one baffle and at least one limiting rib. The hollow, the baffle and the limiting rib are all arranged on the bottom plate. A limiting rib is arranged on the front side of the bottom plate. The fuse I (11) is arranged inside the limiting rib. A hollow I (81) is arranged on the rear side of the limiting rib. The relay I (31) is arranged inside the hollow I (81). Two limiting ribs arranged side by side are arranged on the lower side of the hollow I (81). The fuse II (12) and the fuse III (13) are respectively arranged inside the two limiting ribs. A baffle I (92) is arranged on the lower side of the two limiting ribs. A hollow II (82) is arranged on the lower side of the baffle I (92). The relay II (32) is arranged inside the hollow II (82). Baffle II (93) are arranged on both sides and the lower side of the hollow II (82).

4. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 3, characterized in that, Copper bars I (2) are arranged on the lower side of one end of the fuse I (11), the lower side of one end of the fuse II (12), the lower side of one end of the fuse III (13) and the upper side of one end of the relay I (31). The fuse I (11), the fuse II (12), the fuse III (13) and the relay I (31) are all fixedly connected to the copper bars I (2) through screws. The copper bars I (2) are connected to the wiring port on one side of the box body.

5. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 3 or 4, characterized in that A copper bar II (4) is arranged on the upper side of the other end of the relay I (31). The copper bar II (4) is fixedly connected to the relay I (31) through a screw. The copper bar II (4) is connected to the wiring port on the other side of the box body.

6. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 5, wherein A copper bar III (5) is arranged on the upper side of one end of the relay II (32). The copper bar III (5) is connected to the wiring port on the other side of the box body.

7. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 2, characterized in that, A copper bar IV (6) is arranged on the upper side of the other end of the relay II (32). The copper bar IV (6) is connected to the wiring port on one side of the box body.

8. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 6, characterized in that, An opening Ⅰ (91) is provided on the upper side of the baffle Ⅰ (92), and the copper bar Ⅲ (5) is arranged in the opening Ⅰ (91). An opening Ⅱ (94) is provided on one side of the baffle Ⅱ (93), and the copper bar Ⅳ (6) is arranged in the opening Ⅱ (94).

9. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to claim 7, characterized in that, A fixing frame is provided at the bottom of the box body, and the fixing frame is connected to the vehicle.

10. The high-voltage power distribution box for new energy vehicles with an insulating bracket according to any one of claims 7-9, characterized in that, The box body is a rectangular aluminum alloy box body, and the insulating bracket (7) is a rectangular nylon insulating bracket.

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