High-voltage box and new energy automobile
By setting up a heat dissipation structure inside the high-pressure box, the heat of the components is conducted to the inner wall of the box, solving the problem of balancing heat dissipation and waterproof performance. This achieves efficient heat dissipation without affecting the sealing performance and reduces maintenance costs.
Patent Information
- Application Number
- CN202422823751.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing high-voltage boxes cannot achieve both heat dissipation and waterproof performance, resulting in poor heat dissipation of components and susceptibility to water damage, increasing maintenance costs.
A heat dissipation structure is installed inside the high-pressure box. The heat generated by the components is conducted to the inner wall of the box through thermally conductive parts or thermally conductive adhesive. Then, the heat is exchanged with the outside air through the inner wall of the box, thus maintaining the box's airtightness.
It improves the heat dissipation performance of the high-voltage box while maintaining its waterproof performance, thus reducing maintenance costs.
Smart Images
Figure CN223487676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy technology, specifically to a high-voltage box and a new energy vehicle. Background Technology
[0002] Currently, the global new energy vehicle industry is developing rapidly. As a crucial factor ensuring the driving range and safety performance of new energy vehicles, power batteries play a vital role in their future widespread adoption. Due to the high voltage and power of power batteries, they pose certain risks. Therefore, to ensure the safe operation of new energy vehicles, they need to be used in conjunction with a high-voltage box. The high-voltage box distributes current to each electrical circuit and controls each circuit through contactors, while fuses and circuit breakers provide safety protection for each circuit.
[0003] The high-voltage box includes a housing, inside which is a cavity for accommodating electrical components. An opening is located on one side of the housing, facing both the top and bottom, and is sealed with a cover. All battery management system control boards and high-voltage components such as contactors, fuses, and DC-DC converters are installed inside this cavity. Since these components generate significant heat during operation, poor heat dissipation from the high-voltage box can negatively impact their performance, potentially damaging them and increasing costs and the burden of after-sales maintenance.
[0004] The existing solution is to add an air inlet and a fan to the high-voltage box, allowing heat to be expelled from the box. However, adding an air inlet lowers the IP67 rating to IP20. If the high-voltage box is installed in a low-lying location or during a flood, water can enter through the air inlet, submerging components and other parts and affecting their lifespan. Repairing the high-voltage box after water ingress requires opening the cover to inspect or replace all components, draining the water, and wiping it dry, increasing maintenance costs. Utility Model Content
[0005] The purpose of this invention is to provide a high-voltage box and a new energy vehicle that can solve the problem that the heat dissipation performance and waterproof performance of the components in the high-voltage box cannot be simultaneously achieved in the prior art.
[0006] The embodiments of this utility model are implemented as follows:
[0007] A first aspect of this utility model provides a high-voltage box, including a box body, components disposed within the box body, and a heat dissipation structure. The heat dissipation structure is disposed between the components and the inner wall of the box body to conduct heat generated by the components to the inner wall of the box body. This high-voltage box solves the problem in the prior art where the heat dissipation performance and waterproof performance of the components within the high-voltage box cannot be simultaneously achieved.
[0008] As one possible implementation, the heat dissipation structure includes a heat-conducting component, the opposite sides of which are in contact with the component and the housing, respectively.
[0009] As one possible implementation, an electrical mounting plate is provided on the inner wall of the housing, and clearance holes are provided on the electrical mounting plate corresponding to the heat-conducting component.
[0010] As one possible implementation, the thermal conductive element is one or a combination of at least two of the following: thermal pad, thermal sheet, or thermal adhesive.
[0011] In one possible implementation, the heat dissipation structure includes a housing and thermally conductive adhesive. The components are fixedly disposed within the housing, and there is a preset gap between the outer wall of the components and the inner wall of the housing. The thermally conductive adhesive fills the preset gap.
[0012] In one possible implementation, the housing includes a base and a top cover. The base has a receiving cavity and a first opening and a second opening at opposite ends. The top cover covers the first opening, and the inner wall of the housing seals the second opening.
[0013] As one possible implementation, the heat dissipation structure further includes a sealing element, which is fixedly disposed between the inner wall of the housing and the side wall of the base away from the first opening, and the sealing element is disposed around the outer edge of the second opening.
[0014] In one possible implementation, the housing includes a base and a top cover. The base has an accommodating cavity inside. One end of the base has a first opening. The top cover closes to the first opening. Heat dissipation fins are provided on the side of the base away from the first opening.
[0015] As one possible implementation, the housing is provided with through holes corresponding to the heat dissipation fins, and the heat dissipation structure further includes a sealing member, which is fixedly disposed between the inner wall of the housing and the side wall of the base away from the first opening, and the sealing member is disposed around the outer edge of the heat dissipation fins.
[0016] A second aspect of this utility model provides a new energy vehicle, including the aforementioned high-voltage box. This high-voltage box solves the problem in the prior art where the heat dissipation and waterproofing performance of components within the high-voltage box cannot be simultaneously achieved.
[0017] The beneficial effects of this utility model embodiment include:
[0018] This high-voltage box includes a box body, components housed within the box body, and a heat dissipation structure. The heat dissipation structure is positioned between the components and the inner wall of the box body to conduct heat generated by the components to the inner wall of the box body, where heat is then dissipated through contact with ambient air. Compared to existing solutions that add air inlets and fans to the high-voltage box, the solution provided in this application firstly conducts heat generated by the components to the inner wall of the box body via the heat dissipation structure, and then dissipates the heat through the inner wall of the box body. The thermal conductivity of the heat dissipation structure is superior to that of the airflow provided by the fan, and the inner wall of the box body generally has a large surface area, resulting in significant heat exchange with ambient air, thus improving the heat dissipation performance of the high-voltage box. Secondly, the addition of air inlets does not compromise the sealing performance of the box body, thus preserving its waterproof performance. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the high-pressure box provided in the first embodiment of the present invention;
[0021] Figure 2 This is one of the structural schematic diagrams of the high-pressure box provided in the second embodiment of this utility model;
[0022] Figure 3 This is the second structural schematic diagram of the high-pressure box provided in the second embodiment of the present utility model;
[0023] Figure 4 This is one of the structural schematic diagrams of the high-pressure box provided in the third embodiment of this utility model;
[0024] Figure 5 This is the second structural schematic diagram of the high-pressure box provided in the third embodiment of this utility model.
[0025] Icons: 100-High-voltage box; 10-Box body; 20-Components; 30-Heat-conducting components; 40-Electrical mounting plate; 50-Base; 51-Accommodation cavity; 52-Heat dissipation fins; 60-Top cover; 70-Sealing components; 80-Sealing components. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] Please refer to the reference. Figures 1 to 5 This application provides a high-voltage box 100, including a box body 10, components 20 disposed within the box body 10, and a heat dissipation structure. The heat dissipation structure is disposed between the components 20 and the inner wall of the box body 10 to conduct the heat generated by the components 20 to the inner wall of the box body 10. This high-voltage box 100 can solve the problem in the prior art that the heat dissipation performance and waterproof performance of the components in the high-voltage box cannot be simultaneously achieved.
[0033] It should be noted that the high-voltage box 100 includes a box body 10, components 20, and a heat dissipation structure. The box body 10 has an electrical component receiving cavity to accommodate the components 20 and the heat dissipation structure. The components 20 include fuses, DC-DC converters, etc. These components 20 generate a large amount of heat when they are working, and the heat is concentrated inside the box body 10 and cannot be dissipated. In order to improve heat dissipation, this application sets the heat dissipation structure between the components 20 and the inner wall of the box body 10, so as to conduct the heat generated by the components 20 to the inner wall of the box body 10 through the heat dissipation structure, and then achieve heat dissipation through the contact between the inner wall of the box body 10 and the ambient temperature air in the external environment.
[0034] Compared to existing solutions that add air inlets and fans to the high-pressure box, the solution provided in this application firstly conducts the heat generated by the component 20 to the inner wall of the box 10 through a heat dissipation structure, and then conducts the heat away through the inner wall of the box 10. The heat conduction performance of the heat dissipation structure is better than that of the airflow provided by the fan, and the inner wall of the box 10 generally has a large area, resulting in significant heat exchange with the ambient temperature air in the external environment. Therefore, it can improve the heat dissipation performance of the high-pressure box 100. Secondly, the sealing performance of the box 10 will not be compromised by adding air inlets, and therefore the waterproof performance of the box 10 will not be affected.
[0035] As one possible implementation, the heat dissipation structure includes a heat-conducting element 30, with the opposite sides of the heat-conducting element 30 in contact with the component 20 and the housing 10 respectively, so as to achieve the purpose of heat transfer by the heat-conducting element 30 through contact.
[0036] As one possible implementation method, such as Figure 1 As shown, an electrical mounting plate 40 is provided on the inner wall of the housing 10 to ensure that the components 20 can be connected to the power circuit and work normally. A clearance hole is provided on the electrical mounting plate 40 corresponding to the heat-conducting component 30 so that the inner wall of the housing 10 can be exposed through the clearance hole to fit and contact with the heat-conducting component 30.
[0037] As one possible implementation, the thermally conductive element 30 is one or a combination of at least two of a thermally conductive pad, a thermally conductive sheet, or a thermally conductive adhesive. For example, such as... Figure 1As shown, in some embodiments, the heat-conducting element 30 is a heat-conducting pad, and the shape and area of the heat-conducting pad should match the shape and area of the component 20.
[0038] In the above embodiments, the heat-conducting component 30 only contacts the side wall of the component 20 near the housing 10, while the side wall of the component 20 not in contact with the heat-conducting component 30 still diffuses heat into the interior of the housing 10, thus limiting the heat dissipation effect. To address this problem, as... Figures 2 to 5 As shown, in some other embodiments, the component 20 is wrapped with a heat-conducting element 30, that is, the heat-conducting element 30 can be in close contact with the sidewalls of the component 20 in all directions, thereby preventing heat from diffusing into the interior of the housing 10 through the air.
[0039] As one possible implementation method, such as Figure 2 and Figure 3 As shown, the heat dissipation structure includes a housing and thermally conductive adhesive. The component 20 is fixedly disposed inside the housing. There is a preset gap between the outer wall of the component 20 and the inner wall of the housing. The thermally conductive adhesive is filled in the preset gap so as to completely enclose the component 20 using the thermally conductive adhesive.
[0040] As one possible implementation method, such as Figure 3 As shown, the housing includes a base 50 and a top cover 60. The base 50 has an internal cavity 51, and its opposite ends have a first opening and a second opening, allowing the component 20 to be placed in the cavity 51 through the first opening. The second opening is then sealed by the inner wall of the housing 10, allowing thermally conductive adhesive to be poured into the base 50 through the first opening. After the adhesive is poured in, the top cover 60 closes the first opening. In this way, a sealed space is formed to hold the thermally conductive adhesive, and the adhesive can also adhere to and contact the side walls of the component 20 in all directions and the inner wall of the housing 10 to conduct heat away.
[0041] As one possible implementation method, such as Figure 3 As shown, the heat dissipation structure also includes a sealing element 70, which is fixedly disposed between the inner wall of the housing 10 and the side wall of the base 50 away from the first opening, and the sealing element 70 is disposed around the outer edge of the second opening, so as to improve the sealing between the inner wall of the housing 10 and the base 50.
[0042] As one possible implementation method, such as Figure 4 and Figure 5 As shown, the housing includes a base 50 and a top cover 60. The base 50 has an accommodating cavity 51 inside. One end of the base 50 has a first opening. The top cover 60 covers the first opening. The side of the base 50 away from the first opening is closed and provided with heat dissipation fins 52 to transfer heat through the heat dissipation fins 52.
[0043] As one possible implementation method, such as Figure 4 As shown, the housing 10 has through holes corresponding to the heat dissipation fins 52, allowing the heat dissipation fins 52 to extend directly outside the housing 10 and contact the ambient air for heat dissipation. Based on this, as... Figure 5 As shown, the heat dissipation structure also includes a sealing element 80, which is fixedly disposed between the inner wall of the housing 10 and the side wall of the base 50 away from the first opening. The sealing element 80 is arranged around the outer edge of the heat dissipation fins 52 to improve the sealing between the inner wall of the housing 10 and the base 50, thereby avoiding affecting the waterproof performance of the high-pressure box 100.
[0044] A second aspect of this application provides a new energy vehicle, which includes the aforementioned high-voltage box 100. Since the structure and beneficial effects of the high-voltage box 100 have been described in detail in the foregoing embodiments, they will not be repeated here.
[0045] The above description is merely an optional embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
Claims
1. A high-pressure box, characterized in that, The device includes a housing, components disposed within the housing, and a heat dissipation structure. The heat dissipation structure is disposed between the components and the inner wall of the housing to conduct the heat generated by the components to the inner wall of the housing.
2. The high-voltage box according to claim 1, characterized in that, The heat dissipation structure includes a heat-conducting component, and the opposite sides of the heat-conducting component are in contact with the component and the housing, respectively.
3. The high-pressure box according to claim 2, characterized in that, An electrical mounting plate is provided on the inner wall of the housing, and clearance holes are provided on the electrical mounting plate corresponding to the heat-conducting component.
4. The high-pressure box according to claim 2 or 3, characterized in that, The thermal conductive component is one or a combination of at least two of the following: thermal pad, thermal sheet, or thermal adhesive.
5. The high-voltage box according to claim 1, characterized in that, The heat dissipation structure includes a housing and thermally conductive adhesive. The components are fixedly disposed inside the housing, and there is a preset gap between the outer wall of the components and the inner wall of the housing. The thermally conductive adhesive fills the preset gap.
6. The high-voltage box according to claim 5, characterized in that, The housing includes a base and a top cover. The base has a cavity and a first opening and a second opening at opposite ends. The top cover covers the first opening, and the inner wall of the housing is sealed to the second opening.
7. The high-voltage box according to claim 6, characterized in that, The heat dissipation structure also includes a sealing element, which is fixedly disposed between the inner wall of the housing and the side wall of the base away from the first opening, and the sealing element is disposed around the outer edge of the second opening.
8. The high-voltage box according to claim 5, characterized in that, The housing includes a base and a top cover. The base has an internal cavity. One end of the base has a first opening. The top cover covers the first opening. The side of the base away from the first opening is provided with heat dissipation fins.
9. The high-voltage box according to claim 8, characterized in that, The housing has through holes corresponding to the heat dissipation fins. The heat dissipation structure also includes a sealing member, which is fixedly disposed between the inner wall of the housing and the side wall of the base away from the first opening, and the sealing member is disposed around the outer edge of the heat dissipation fins.
10. A new energy vehicle, characterized in that, Includes the high-pressure box as described in any one of claims 1 to 9.