Two-in-one expansion tank

Abstract

The utility model discloses a two-in-one expansion box, comprising: an upper shell and a lower shell, which enclose an expansion box body; a partition, which is arranged on the upper shell and the lower shell, and the partition divides the expansion box body into a motor cooling expansion box cavity and a motor cooling expansion box cavity; a battery cooling degassing pipe, which is arranged on the upper shell, and the battery cooling degassing pipe is connected to the battery cooling expansion box cavity; a battery cooling water supply pipe, which is arranged on the lower shell, and the battery cooling water supply pipe is connected to the battery cooling expansion box cavity; a motor cooling degassing pipe, which is arranged on the upper shell, and the motor cooling degassing pipe is connected to the motor cooling expansion box cavity; a motor cooling water supply pipe, which is arranged on the lower shell, and the motor cooling water supply pipe is connected to the motor cooling expansion box cavity; a water channel and a gas channel are arranged on the partition, which occupy a small space, are beneficial to the layout of the whole vehicle, and can also reduce weight and cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicles, and in particular relates to a two-in-one expansion box. Background Art

[0002] In the process of implementing the utility model, the inventor found that the prior art has at least the following problems:

[0003] The cooling system of pure electric vehicles is generally divided into a motor cooling system and a battery cooling system. Because the operating temperatures of the two systems are different, a separate expansion tank is generally used for system water replenishment and degassing. The expansion tank is generally composed of an upper and lower box body and an expansion tank pressure cap. The two components occupy more space in the front cabin.

[0004] CN216597227U - Flexible bladder for oil expansion tank of transformer, oil expansion tank and transformer, discloses a flexible bladder for oil expansion tank of transformer, which includes a first elastomer layer and a second elastomer layer, and a reinforcing layer including fabric, the reinforcing layer is arranged between the first elastomer layer and the second elastomer layer; and the first elastomer layer and the second elastomer layer each include at least one elastomer, and cannot solve the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a two-in-one expansion box, which occupies a small space, is conducive to the layout of the whole vehicle, and can reduce weight and cost at the same time.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a two-in-one expansion tank having:

[0007] The upper shell and the lower shell enclose the expansion tank body;

[0008] A partition is arranged on the upper shell and the lower shell, and the partition divides the expansion tank body into a motor cooling expansion tank cavity and a motor cooling expansion tank cavity;

[0009] A battery cooling degassing pipe is arranged on the upper shell, and the battery cooling degassing pipe is connected to the battery cooling expansion tank cavity;

[0010] A battery cooling water supply pipe is arranged on the lower shell, and the battery cooling water supply pipe is connected to the battery cooling expansion tank cavity;

[0011] A motor cooling degassing pipe is arranged on the upper shell, and the motor cooling degassing pipe is connected to the motor cooling expansion tank cavity;

[0012] A motor cooling water supply pipe is arranged on the lower shell, and the motor cooling water supply pipe is connected to the motor cooling expansion tank cavity;

[0013] A water channel and a gas channel are arranged on the partition plate, and the water channel and the gas channel are connected with the motor cooling expansion box cavity and the motor cooling expansion box cavity.

[0014] The water channel is arranged at the lower end of the partition.

[0015] The gas channel is arranged at the upper end of the partition.

[0016] The upper shell is provided with an opening and an expansion tank cover for closing the opening.

[0017] The expansion tank cover is provided with a pressure relief valve, and a plugging cover is provided which is communicated with the pressure relief valve.

[0018] The upper shell and the lower shell are connected by friction welding.

[0019] One of the above technical solutions has the following advantages or beneficial effects: it occupies a small space, is conducive to the layout of the entire vehicle, and can reduce weight and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a two-in-one expansion tank provided in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of a two-in-one expansion tank;

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of a two-in-one expansion tank;

[0023] The markings in the above figures are: 1. upper shell, 2. expansion tank cover, 3. battery cooling degassing pipe, 4. plugging cover, 5. lower shell, 6. battery cooling water supply pipe, 7. motor cooling water supply pipe, 8. motor cooling degassing pipe, 9. partition, 10. water channel, 11. gas channel, 12. motor cooling expansion tank cavity, 13. battery cooling expansion tank cavity. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 3 , a two-in-one expansion tank, having:

[0026] The upper shell 1 and the lower shell 5 enclose the expansion tank body; the partition 9 is arranged on the upper shell 1 and the lower shell 5, and the partition 9 divides the expansion tank body into the motor cooling expansion tank cavity 12 and the motor cooling expansion tank cavity 12; the battery cooling degassing pipe 3 is arranged on the upper shell 1, and the battery cooling degassing pipe 3 is connected to the battery cooling expansion tank cavity 13; the battery cooling water supply pipe 6 is arranged on the lower shell 5, and the battery cooling water supply pipe 6 is connected to the battery cooling expansion tank cavity 13; the motor cooling degassing pipe 8 is arranged on the upper shell 1, and the motor cooling degassing pipe 8 is connected to the motor cooling expansion tank cavity 12; the motor cooling water supply pipe 7 is arranged on the lower shell 5, and the motor cooling water supply pipe 7 is connected to the motor cooling expansion tank cavity 12; the waterway channel 10 and the gas channel 11 are arranged on the partition 9, and the waterway channel 10 and the gas channel 11 are connected to the motor cooling expansion tank cavity 12 and the motor cooling expansion tank cavity 12. The upper shell 1 and the lower shell 5 are connected by friction welding. The interlayer design in the middle of the partition 9 isolates the heat exchange between the battery cooling system and the motor cooling system. At the same time, a hole is designed in the middle of the partition to connect to the external environment, which solves the deformation of the partition 9 structure during the change of coolant temperature. It occupies a small space, is conducive to the layout of the whole vehicle, and can reduce weight and cost.

[0027] Battery cooling degassing pipe 3: It is integrally formed by injection molding of the upper shell 1 and is located at the upper part of the battery cooling expansion tank cavity 13 to facilitate degassing of the battery cooling circuit.

[0028] Battery cooling water supply pipe 6: It is integrally formed by injection molding of the lower shell 5 and is located at the lower part of the battery cooling expansion tank cavity 13 to facilitate water supply to the battery cooling circuit.

[0029] Motor cooling water supply pipe 7: It is integrally formed by injection molding of the lower shell 5 and is located at the lower part of the motor cooling expansion tank cavity 12 to facilitate water supply to the motor cooling circuit.

[0030] Motor cooling degassing pipe 8: It is formed by integral injection molding of the upper shell 1 and is located on the upper part of the motor cooling expansion tank cavity 12 to facilitate water removal from the motor cooling circuit.

[0031] Partition 9: It is formed by friction welding of part of the structure of the upper shell 1 and the lower shell 5, and its function is to divide the expansion tank into two relatively independent cavities, namely the motor cooling expansion tank cavity 12 and the battery cooling expansion tank cavity 13, so that the water replenishment and degassing of the two cooling circuits of the motor and the battery can be realized without affecting each other; the water channel 10 is arranged at the lower end of the partition 9. The gas channel 11 is arranged at the upper end of the partition 9.

[0032] The upper shell 1 is provided with an opening, and an expansion tank cover 2 for closing the opening is provided. The expansion tank cover 2 is connected to the upper shell 1 of the expansion tank through threads, and is located at the battery cooling expansion tank cavity 13 at the upper end of the expansion tank, and integrates a pressure relief valve and a vacuum valve to maintain the pressure balance of the cooling system.

[0033] The expansion tank cover 2 is provided with a pressure relief valve, and a plug cover 4 is provided to communicate with the pressure relief valve. Plug cover 4: It is snapped onto the upper shell 1 and connected to the expansion tank cover 2, and is used to drain liquid or gas from the cooling system when it is discharged through the pressure relief valve. Battery motor expansion tank water channel 10: located at the bottom of the partition 9 structure of the lower shell 5; battery motor expansion tank gas channel 11: located at the top of the partition 9 structure of the upper shell 1; motor cooling expansion tank cavity 12, battery cooling expansion tank cavity 13: formed by the partition 9 structure in the middle after the upper shell 1 and the lower shell 5 are welded.

[0034] The interlayer design in the middle of the partition 9 isolates the heat exchange between the battery cooling system and the motor cooling system. At the same time, a hole is designed in the middle of the interlayer to connect to the external environment, which solves the deformation of the partition 9 structure during the change of coolant temperature. The battery motor expansion tank water channel 10 structure at the bottom of the partition 9 allows the motor cooling expansion tank cavity 12 and the battery cooling expansion tank cavity 13 to be interconnected when the coolant is filled, and the filling of the two cooling systems is completed only once. The battery motor expansion box gas channel 11 structure at the top of the partition 9 can maintain the pressure balance between the motor cooling expansion tank cavity 12 and the battery cooling expansion tank cavity 13, avoiding the situation in which the cooling system cannot be vented or replenished due to the imbalance of liquid levels in the motor cooling expansion tank cavity 12 and the battery cooling expansion tank cavity 13 during use and manual filling.

[0035] After adopting the above structure, it occupies less space, is conducive to the layout of the whole vehicle, and can also reduce weight and cost.

[0036] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-in-one expansion tank, characterized in that: have: The upper shell and the lower shell enclose the expansion tank body; A partition is arranged on the upper shell and the lower shell, and the partition divides the expansion tank body into a motor cooling expansion tank cavity and a motor cooling expansion tank cavity; A battery cooling degassing pipe is arranged on the upper shell, and the battery cooling degassing pipe is connected to the battery cooling expansion tank cavity; A battery cooling water supply pipe is arranged on the lower shell, and the battery cooling water supply pipe is connected to the battery cooling expansion tank cavity; A motor cooling degassing pipe is arranged on the upper shell, and the motor cooling degassing pipe is connected to the motor cooling expansion tank cavity; A motor cooling water supply pipe is arranged on the lower shell, and the motor cooling water supply pipe is connected to the motor cooling expansion tank cavity; A water channel and a gas channel are arranged on the partition plate, and the water channel and the gas channel are connected with the motor cooling expansion box cavity and the motor cooling expansion box cavity.

2. The two-in-one expansion tank according to claim 1, characterized in that: The water channel is arranged at the lower end of the partition.

3. The two-in-one expansion tank according to claim 2, characterized in that: The gas channel is arranged at the upper end of the partition.

4. The two-in-one expansion tank according to claim 3, characterized in that: The upper shell is provided with an opening and an expansion tank cover for closing the opening.

5. The two-in-one expansion tank according to claim 4, characterized in that: The expansion tank cover is provided with a pressure relief valve, and a plugging cover is provided which is communicated with the pressure relief valve.

6. The two-in-one expansion tank according to claim 5, characterized in that: The upper shell and the lower shell are connected by friction welding.

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