High-pressure distribution box structure and water cooling unit with same

Abstract

The utility model relates to the technical field of high-pressure distribution of cooling systems, in particular to a high-pressure distribution box structure and a water chilling unit with the high-pressure distribution box structure, the high-pressure distribution box structure comprises an upper cover and a lower box body connected with the upper cover, a closed containing space is formed after the upper cover and the lower box body are connected, and a waterproof ventilation valve is installed on the upper cover and / or the lower box body. The waterproof ventilation valve is communicated with the inside and the outside of the containing space so as to balance air pressure inside and outside the containing space, and at least one input high-voltage line and one output high-voltage line are installed on the upper cover and / or the lower box body in a sealed mode and are both connected to a high-voltage distribution box device installed in the containing space. The waterproof ventilation valve is installed on the closed box body, air pressure balance inside and outside the box body is achieved, the waterproof effect is guaranteed, air pressure difference inside and outside the box body caused by temperature difference change is avoided, and therefore the influence of suction force possibly generated inside the box body on the sealing effect is eliminated, and the service life of the box body is prolonged. And the high-pressure safety of the water chilling unit and the high-pressure distribution box is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of high - voltage distribution of cooling systems, in particular to a high - voltage distribution box structure and a water - cooled unit having the same. Background Art

[0002] In existing medium - and large - sized electric vehicle models such as heavy trucks and minivans, the high - voltage distribution of the battery cooling system requires a device with high safety, convenient operation, and fixed modularity. And when the high - voltage distribution box is installed in the water - cooled unit, it needs to have a certain waterproof performance. Therefore, it is generally sealed. However, after sealing, under the repeated change of the internal and external temperature difference of the box body, the air pressure inside and outside the box body is unbalanced, and the internal suction force may cause the failure of the sealing effect of the box body, affecting the waterproof performance. For this reason, this application proposes a high - voltage distribution box structure and a water - cooled unit having the same. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a high - voltage distribution box structure and a water - cooled unit having the same. By installing a waterproof and breathable valve on the sealed box body, the air pressure balance inside and outside the box body is realized. While ensuring the waterproof effect, it avoids the internal and external air pressure difference generated by the sealed box body under the temperature difference in the past, resulting in the internal suction force affecting the sealing effect.

[0004] In the first aspect, the utility model proposes a high - voltage distribution box structure, which includes an upper cover and a lower box body connected thereto. After the upper cover and the lower box body are connected, they form a sealed accommodation space. A waterproof and breathable valve is installed on the upper cover and / or the lower box body, and the waterproof and breathable valve communicates the inside and outside of the accommodation space to balance the air pressure inside and outside the accommodation space. At least one input high - voltage wire and one output high - voltage wire are hermetically installed on the upper cover and / or the lower box body, and both the input high - voltage wire and the output high - voltage wire are connected to a high - voltage distribution box device installed in the accommodation space. The end of the input high - voltage wire far from the high - voltage distribution box device is connected with an input plug - in part, and the end of the output high - voltage wire far from the high - voltage distribution box device is connected with an output plug - in part.

[0005] Further, a box - body plug - in part is also hermetically installed on the upper cover and / or the lower box body, and the box - body plug - in part is connected to the high - voltage distribution box device in the accommodation space.

[0006] Further, the upper cover and the lower box body are made of aluminum alloy material or stainless - steel material.

[0007] Further, the upper cover and the lower box body are connected by bolts.

[0008] Further, the lower box body is a frame - like structure with an open top, and the upper cover is adapted to the open top.

[0009] Furthermore, a sealing ring is provided at the connection between the upper cover and the lower box body.

[0010] In a second aspect, the present utility model also provides a water-cooled unit, which includes a unit housing and the high-voltage distribution box structure according to any one of the first aspect, and the high-voltage distribution box structure is installed inside the unit housing.

[0011] The beneficial effects of the present utility model are as follows: for the high-voltage distribution box structure provided by the present utility model and the water-cooled unit having the same, by installing a waterproof breathable valve on the sealed box body, the air pressure balance inside and outside the box body is achieved. While ensuring the waterproof effect, the air pressure difference inside and outside the box body caused by temperature difference changes is avoided, thereby eliminating the influence of the possible suction force generated inside on the sealing effect, ensuring the high-voltage safety of the water-cooled unit and the high-voltage distribution box, and being applicable and popularizable for the high-voltage distribution of automotive water-cooled units. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the high-voltage distribution box structure in an embodiment of the present utility model;

[0013] Figure 2 It is a schematic diagram of the structures of the upper cover and the lower box body in an embodiment of the present utility model;

[0014] Figure 3 It is a schematic diagram of the water-cooled unit in an embodiment of the present utility model;

[0015] Wherein: 1. Upper cover; 2. Lower box body; 3. Waterproof breathable valve; 4. Input high-voltage wire; 5. Input connector; 6. Output high-voltage wire; 7. Output connector; 8. Box body connector; 9. Sealing ring; 10. High-voltage distribution box device; 11. Unit housing. Detailed Embodiments

[0016] Such as Figure 1 And Figure 2As shown in the figure, a high-voltage distribution box structure provided in this embodiment includes an upper cover 1 made of aluminum alloy and a lower box body 2. In this embodiment, the lower box body 2 is specifically a square box structure with an open top, and the upper cover 1 is adapted to the open top and covers the lower box body 2. A sealing ring 9 is provided between the upper cover 1 and the lower box body 2, and after being connected by bolts, a sealed accommodation space can be formed. A waterproof breathable valve 3 is installed on the upper cover 1, and the waterproof breathable valve 3 communicates the inside and outside of the accommodation space to balance the air pressure inside and outside the accommodation space. An input high-voltage wire 4 and an output high-voltage wire 6 are hermetically installed on the lower box body 2, and both the input high-voltage wire 4 and the output high-voltage wire 6 are connected to a high-voltage distribution box device 10 installed in the accommodation space. The end of the input high-voltage wire 4 away from the high-voltage distribution box device 10 is connected with an input plug-in connector 5, and the end of the output high-voltage wire 6 away from the high-voltage distribution box device 10 is connected with an output plug-in connector 7. Current is input to the high-voltage distribution box device 10 through the input high-voltage wire 4 and then distributed from the high-voltage distribution box device 10 to the output high-voltage wire 6.

[0017] It should be noted that the high-voltage distribution box device 10 in this embodiment refers to a general term for components such as fuses, relays, high-voltage connectors, current sensors, voltage sensors, temperature sensors, and PCBs in an integrated distribution box, which are mainly used for the distribution and output of electric energy and will not be elaborated here.

[0018] A box body plug-in connector 8 is also hermetically installed on the lower box body 2 in this embodiment. The box body plug-in connector 8 is connected to the high-voltage distribution box device 10 in the accommodation space and can also be used to plug in other circuits for power output.

[0019] In some other embodiments, as Figure 3 shown, the high-voltage distribution box structure in the foregoing embodiment can be installed on an automotive water-cooled unit. Specifically, the lower box body 2 is installed in the unit housing 11 through bolts, and the input plug-in connector 5, the output plug-in connector 7, and the box body plug-in connector 8 are all connected to the components in the water-cooled unit through wires.

[0020] In addition to the above embodiments, the present utility model can also have other embodiments; all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model.

Claims

1. A high-voltage distribution box structure, comprising an upper cover (1) and a lower box body (2) connected thereto, wherein the upper cover (1) and the lower box body (2) are connected to form a closed accommodating space, characterized in that: A waterproof breathable valve (3) is installed on the upper cover (1) and / or the lower box body (2), and the waterproof breathable valve (3) communicates with the inside and outside of the accommodation space to balance the air pressure inside the accommodation space and outside the accommodation space. At least one input high-voltage line (4) and one output high-voltage line (6) are sealed and installed on the upper cover (1) and / or the lower box body (2), and both the input high-voltage line (4) and the output high-voltage line (6) are connected to a high-voltage distribution box device (10) installed in the accommodation space. The end of the input high-voltage line (4) away from the high-voltage distribution box device (10) is connected to an input connector (5), and the end of the output high-voltage line (6) away from the high-voltage distribution box device (10) is connected to an output connector (7).

2. The high voltage distribution box structure according to claim 1, characterized in that: A box body connector (8) is also sealed and mounted on the upper cover (1) and / or the lower box body (2); the box body connector (8) is connected to the high-voltage distribution box component (10) in the accommodating space.

3. The high voltage distribution box structure according to claim 1, characterized in that: The upper cover (1) and the lower box body (2) are made of aluminum alloy or stainless steel.

4. The high voltage distribution box structure according to claim 1, characterized in that: The upper cover (1) and the lower box body (2) are connected via bolts.

5. The high voltage distribution box structure according to claim 1, characterized in that: The lower box body (2) is a frame-shaped structure with an opening at the top, and the upper cover (1) is adapted to fit the top opening.

6. The high voltage distribution box structure according to claim 1, characterized in that: A sealing ring (9) is provided at the connection between the upper cover (1) and the lower box body (2).

7. A water cooling unit, characterized in that: It comprises a machine casing (11) and a high-voltage distribution box structure as claimed in any one of claims 1 to 6, and the high-voltage distribution box structure is installed in the machine casing (11).

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