Cooling pipeline joint device of electric driving device, electric driving device and cooling system

Abstract

The utility model relates to the field of cooling devices, in particular to a cooling pipeline connector device of an electric drive device, the electric drive device and a cooling system. The utility model provides a cooling pipeline joint device of an electric driving device, which comprises a first tubular joint part suitable for being connected with a first cooling liquid pipe of the electric driving device; one end of the second tubular joint part is communicated with the first tubular joint part, and the other end of the second tubular joint part is suitable for being connected with a heat management cooling liquid pipe; and the self-sealing joint is communicated with the first tubular joint part and the second tubular joint part to form a three-way structure. By means of the arrangement, the cooling pipeline connector device of the electric drive device, the electric drive device and the cooling system can solve the problem that when cooling liquid is discharged out of a cooling pipeline, the cooling liquid is prone to splashing, and surrounding wire harnesses and pipelines are polluted.

Description

Technical Field

[0001] The utility model relates to the field of cooling devices, and particularly relates to a cooling pipeline joint device for an electric drive device, an electric drive device and a cooling system. Background Art

[0002] The electric drive device mainly includes an electric control and a motor. During operation, the motor and the electric control generate a lot of heat. To meet the heat dissipation requirements of the electric control and the electric drive, a cooling system is generally provided to dissipate heat from the motor and the electric control. Some of the cooling systems of the electric drive device use a liquid cooling method for heat dissipation. The cooler is connected to the electric drive device through a thermal management pipeline. The coolant in the cooler is transported to the electric drive device through the thermal management pipeline, and the coolant after heat exchange with the electric drive device returns to the cooler through the thermal management pipeline for cooling, and so on in a cycle.

[0003] In the related art, an electric drive device is provided with an inlet for coolant to input the coolant into the electric drive system, and the interface between the thermal management pipeline and the electric drive device is used as an outlet for coolant. When the equipment needs to be repaired or the electric drive device is replaced, the coolant in the electric drive device needs to be drained first. In the related art, the method of unplugging the thermal management pipeline is used to drain the coolant. However, this method cannot control the splashing of the coolant, and it is easy to splash the coolant and pollute the surrounding wire harnesses and pipelines.

[0004] Therefore, how to solve the problem that the coolant is easily splashed when draining the coolant, polluting the surrounding wire harnesses and pipelines, has become a technical problem to be solved by those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides a cooling pipeline joint device for an electric drive device, an electric drive device and a cooling system, which can solve the problem that the coolant is easily splashed when draining the coolant from the cooling pipeline, polluting the surrounding wire harnesses and pipelines.

[0006] In the first aspect, the utility model provides a cooling pipeline joint device for an electric drive device, including:

[0007] A first tubular joint part, adapted to be connected to a first coolant pipe of the electric drive device;

[0008] A second tubular joint part, one end of which is communicated with the first tubular joint part, and the other end of which is adapted to be connected to a thermal management coolant pipe;

[0009] A self-sealing joint, which is communicated with the first tubular joint part and the second tubular joint part to form a tee structure.

[0010] Beneficial Effects:

[0011] In this solution, the first tubular joint is used to connect the first coolant pipe of the electric drive device. One end of the second tubular joint is communicated with the first tubular joint, and the other end is connected to the thermal management coolant pipe, so as to divert the coolant flowing out of the thermal management coolant pipe to the first coolant pipe and then flow into the electric drive device to cool the electronic control components and stator components in the electric drive device. In addition, the cooling pipeline joint device provided in this solution further includes a self-sealing joint. It should be noted that the first tubular joint, the second tubular joint and the self-sealing joint form a tee. The self-sealing joint can be detachably matched with an external liquid discharge joint at the same time. When the two are in a separated state, due to the self-sealing mechanism designed inside the self-sealing joint, the self-sealing joint can automatically seal the port to prevent the coolant from flowing out. When the self-sealing joint and the liquid discharge joint are in a mating state, the self-sealing mechanism of the self-sealing joint is released, so that the inside of the self-sealing joint is in communication with the liquid discharge joint, and the coolant can be diverted out through the liquid discharge joint. With such a setting, when it is necessary to add coolant to the cooling system, the liquid discharge joint can be installed on the self-sealing joint, and the two are brought into conduction. First, the cooling system is evacuated to a vacuum state through the liquid discharge joint by a vacuum pumping device, and then the coolant is pumped in. After the coolant channels of the cooling system are filled with the coolant, the liquid discharge joint is detached from the self-sealing joint, and the first tubular joint realizes self-sealing. When it is necessary to discharge the coolant of the cooling system, only a conduit needs to be connected to the second tubular joint, and the second tubular joint is assembled to the first tubular joint, and then the coolant can be discharged through the conduit. After the coolant is discharged, the second tubular joint is detached, and the first tubular joint realizes self-sealing, thus avoiding the problem of coolant splashing.

[0012] The cooling pipeline device of the electric drive device provided by the present utility model further includes:

[0013] A connecting plate, the first tubular joint is connected to the first side of the connecting plate, the second tubular joint and the self-sealing joint are both connected to the second side of the connecting plate, and the connecting plate is adapted to be connected to the cover plate of the electric drive device.

[0014] In the cooling pipeline device of the electric drive device provided by the present utility model, a cavity structure is provided inside the connecting plate, and the first tubular joint, the second tubular joint and the self-sealing joint are all communicated with the cavity structure.

[0015] In the cooling pipeline device of the electric drive device provided by the present utility model, the first tubular joint, the second tubular joint and the self-sealing joint are all detachably connected to the connecting plate.

[0016] In the cooling pipeline device of the electric drive device provided by the present utility model, the connecting plate, the first tubular joint and the second tubular joint are provided as an integral structure.

[0017] According to the cooling pipeline device of the electric drive device provided by the present utility model, the connecting plate is provided with a plurality of connecting holes, and the connecting plate is adapted to be connected to the cover plate of the electric drive device through a connecting member inserted into the connecting holes.

[0018] According to the cooling pipeline device of the electric drive device provided by the present utility model, a sealing mechanism is arranged inside the self-sealing joint, and the cooperation mode between the external liquid discharge joint and the self-sealing joint is set as quick insertion fit. When the liquid discharge joint is inserted and cooperated with the self-sealing joint, the sealing mechanism of the self-sealing joint is opened.

[0019] In a second aspect, the present utility model provides an electric drive device, including: the cooling pipeline joint device of the electric drive device described in any one of the above.

[0020] In a third aspect, the present utility model provides a cooling system, including:

[0021] An electric drive device, including an electric control component, a stator component, and a coolant channel, wherein the coolant channel is communicated with the electric control component and the stator component;

[0022] A first coolant pipe, communicated with the coolant channel;

[0023] A cooler, provided with a thermal management coolant pipe;

[0024] Wherein, the first coolant pipe is connected and communicated with the thermal management coolant pipe through the cooling pipeline joint device of the electric drive device described in any one of the above.

[0025] According to the cooling system provided by the present utility model, the coolant channel includes:

[0026] An electric control coolant channel, used for heat exchange with the electric control component;

[0027] A stator coolant channel, used for heat exchange with the stator component;

[0028] The first end of the electric control coolant channel is communicated with the stator coolant channel, and the second end is communicated with the first coolant pipe; the thermal management coolant pipe is communicated with the liquid outlet end of the cooler.

[0029] Beneficial effects:

[0030] With such a setting, the electric drive device and the cooling system provided by the present utility model can solve the problem that when the coolant is discharged from the cooling pipeline, it is easy to cause the coolant to splash and pollute the surrounding wire harnesses and pipelines. The derivation process of this beneficial effect is generally similar to the derivation process of the beneficial effect brought by the cooling pipeline joint device of the above electric drive device, and will not be elaborated here. Description of the drawings

[0031] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 Explosion structure schematic diagram of the electric drive device according to an embodiment of the present utility model;

[0033] Figure 2 Structure schematic diagram of the electric drive device according to an embodiment of the present utility model;

[0034] Figure 3 Structure schematic diagram of the cooling pipeline joint device according to an embodiment of the present utility model.

[0035] Explanation of the reference numerals:

[0036] 11. Electric drive device; 12. Second tubular joint part; 13. First tubular joint part; 14. Liquid discharge assembly; 141. Self-sealing joint; 142. Liquid discharge joint; 15. Connecting plate; 16. Cover plate. Specific embodiments

[0037] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0038] Such as Figures 1 to 3As shown, an embodiment of the present utility model provides a cooling pipeline joint device for an electric drive device 11. The electric drive device 11 includes a rotor assembly, a stator assembly, and an electronic control assembly. During the process of driving the rotorcraft system to rotate, the electric drive device 11 generates a large amount of heat. Therefore, the electric drive device 11 is usually provided with a cooling system for cooling the heat-generating components inside it. The cooling system includes a coolant channel inside the electric drive device 11 and a cooler outside the electric drive device 11. Among them, the electric drive device 11 is provided with a first coolant pipe for inputting or outputting coolant, and the cooler is provided with a thermal management coolant pipe for outputting or inputting the coolant inside the cooler. The cooling pipeline joint device for the electric drive device 11 provided in this embodiment is used to connect with the first coolant pipe and the thermal management coolant pipe of the electric drive device 11. It should be understood that when the above thermal management coolant pipe is used to output the coolant inside the cooler, the first coolant pipe of the electric drive device 11 is used to input the coolant into the coolant channel of the electric drive device 11. When the above thermal management coolant pipe is used to input the coolant into the cooler, the first coolant pipe of the electric drive device 11 is used to output the coolant from the coolant channel of the electric drive device 11. In the following embodiments, taking the above thermal management coolant pipe being used to output the coolant inside the cooler and the first coolant pipe of the electric drive device 11 being used to input the coolant into the coolant channel of the electric drive device 11 as an example, the description will be expanded.

[0039] In this embodiment, the joint device includes a first tubular joint 13, a second tubular joint 12, and a self-sealing joint 141.

[0040] Among them, the first tubular joint 13 is adapted to be connected to the first coolant pipe. One end of the second tubular joint 12 is communicated with the first tubular joint 13, and the other end is adapted to be connected to the thermal management coolant pipe. The self-sealing joint 141 is communicated with the first tubular joint 13 and the second tubular joint 12 to form a tee structure. The self-sealing joint 141 and an external drain joint 142 constitute a drain assembly 14. One end of the self-sealing joint 141 is connected to the first tubular joint 13, and the other end is adapted to cooperate with the external drain joint 142. When the self-sealing joint 141 and the drain joint 142 are in a separated state, the self-sealing joint 141 is in a closed state. When the self-sealing joint 141 and the drain joint 142 are in a cooperating state, the self-sealing joint 141 and the drain joint 142 are in a conducting state.

[0041] In this embodiment, the first tubular joint 13 is used to connect the first coolant pipe of the electric drive device 11. One end of the second tubular joint 12 communicates with the first tubular joint 13, and the other end is connected to the thermal management coolant pipe, so as to divert the coolant flowing out of the thermal management coolant pipe to the first coolant pipe, and then flow into the electric drive device 11 to cool the electronic control components and stator components in the electric drive device 11. In addition, it should be noted that the first tubular joint 13, the second tubular joint 12 and the self-sealing joint 141 form a tee. The self-sealing joint 141 is detachably matched with the external drain joint 142 at the same time. When the two are in a separated state, due to the self-sealing mechanism designed inside the self-sealing joint 141, the self-sealing joint 141 can automatically seal the port and prevent the coolant from flowing out. When the self-sealing joint 141 and the drain joint 142 are in a mating state, the self-sealing mechanism of the self-sealing joint 141 is released, so that the inside of the self-sealing joint 141 is in communication with the drain joint 142, and the coolant can be diverted out through the drain joint 142.

[0042] With such a setting, when it is necessary to add coolant to the cooling system, the drain joint 142 can be installed on the self-sealing joint 141, and the two are brought into conduction. First, the cooling system is evacuated to a vacuum state through the drain joint 142 by a vacuum pumping device, and then the coolant is pumped in. After the coolant fills the coolant channels of the cooling system, the drain joint 142 is detached from the self-sealing joint 141, and the first tubular joint realizes self-sealing. When it is necessary to drain the coolant of the cooling system, only need to connect a conduit to the second tubular joint and assemble the second tubular joint to the first tubular joint, then the coolant can be led out of the machine arm through the conduit. After draining the coolant, the second tubular joint is removed, and the first tubular joint realizes self-sealing, thus avoiding the problem of coolant splashing.

[0043] In a further embodiment, the cooling pipeline device of the electric drive device 11 further includes a connecting plate 15. The first tubular joint 13 is connected to the first side of the connecting plate 15, and the second tubular joint 12 and the self-sealing joint 141 are both connected to the second side of the connecting plate 15. The connecting plate 15 is adapted to be connected to the cover plate 16 of the electric drive device 11.

[0044] The connecting plate 15 is a plate-like member with a certain thickness, specifically a metal plate. The connecting plate 15 has two main sides. The first side is used to connect the first tubular joint 13, and the second side is used to connect the second tubular joint 12 and the self-sealing joint 141. As a support structure of the cooling pipeline joint device, the main function of the connecting plate 15 is to organically connect the first tubular joint 13, the second tubular joint 12 and the self-sealing joint 141 together and provide a stable installation platform for connection with the cover plate 16 of the electric drive device 11.

[0045] With such a setting, in this embodiment, by integrating the first tubular joint 13, the second tubular joint 12, and the self-sealing joint 141 on the connecting plate 15, a modular cooling pipeline joint device is formed. This solution can simplify the installation process and reduce the complexity and error rate of on-site assembly.

[0046] In a further embodiment, a cavity structure is provided inside the connecting plate 15, and the first tubular joint 13, the second tubular joint 12, and the self-sealing joint 141 are all communicated with the cavity structure.

[0047] The inside of the connecting plate 15 is designed to have a sealed cavity structure, which reduces the weight of the connecting plate 15. Moreover, the first tubular joint 13, the second tubular joint 12, and the self-sealing joint 141 are all connected to the cavity structure, enabling the coolant to flow freely between the above components and reducing the flow resistance.

[0048] In some embodiments, the first tubular joint 13, the second tubular joint 12, and the self-sealing joint 141 are detachably connected to the connecting plate 15. Specifically, they can be detachably connected through a threaded connection structure.

[0049] In another embodiment, the connecting plate 15, the first tubular joint 13, and the second tubular joint 12 are provided as an integral structure. For example, they can be formed into an integral structure through a casting process or a welding process.

[0050] In a further embodiment, the connecting plate 15 is provided with a plurality of connection holes, and the connecting plate 15 is adapted to be connected to the cover plate 16 of the electric drive device 11 through a connector inserted into the connection holes. For example, four threaded holes are evenly provided at the outer edge of the connecting plate 15. Correspondingly, four threaded holes are provided on the cover plate 16 of the electric drive device 11. Through the screws inserted into the corresponding threaded holes, the reliable connection between the connecting plate 15 and the cover plate 16 can be achieved.

[0051] In a further embodiment, a sealing mechanism is provided inside the self-sealing joint 141, and the cooperation mode between the external liquid discharge joint 142 and the self-sealing joint 141 can be set as a quick-insertion fit. When the liquid discharge joint 142 is inserted and mated with the self-sealing joint 141, the sealing mechanism of the self-sealing joint 141 is opened.

[0052] It should be noted that a sealing mechanism is provided inside the self-sealing joint 141, and the sealing structure is a self-sealing structure, that is, under normal conditions, the sealing structure seals the channel of the self-sealing joint 141, and the channel is connected when the drain joint 142 and the self-sealing joint 141 are in a mating state. This self-sealing sealing structure can refer to the self-sealing plug joint of the related technology, and the specific structures of the self-sealing joint 141 and the drain joint 142 are not described here. The mating mode of the drain joint 142 and the self-sealing joint 141 is set to a quick-plug fit. The quick-plug fit design allows the user to simply insert the drain joint 142 into the self-sealing joint 141 to achieve a tight connection between the two, without the use of additional tools or complicated operating steps. This mating method simplifies the installation process and improves operating efficiency.

[0053] This embodiment further provides an electric drive device, comprising the cooling pipe joint device of the electric drive device described in any of the above embodiments.

[0054] In addition, the embodiment of the utility model further provides a cooling system, including an electric drive device 11, a first coolant pipe and a cooler. The electric drive device 11 includes an electric control component, a stator component and a coolant channel, and the coolant channel is connected to the electric control component and the stator component. The first coolant pipe is connected to the coolant channel. The cooler is provided with a thermal management coolant pipe. The first coolant pipe is connected to the thermal management coolant pipe through the cooling pipe joint device of the electric drive device 11 in any of the above embodiments.

[0055] The cooling system provided in this embodiment is used to cool the electric control component and the stator component of the electric drive device 11. Coolant channels are provided inside the electric control component and the stator component. When the coolant flows inside the coolant channel, it can exchange heat with the electric control component and the stator component, thereby achieving a cooling effect. The cooler is provided outside the electric drive device 11, and is used to dissipate heat from the coolant. The coolant after heat dissipation is input into the electric drive device 11 for cooling, and then the coolant flows back to the cooler for heat dissipation again, thus forming a cycle. In this embodiment, the first coolant pipe is connected to the coolant channel, and the cooler is provided with a thermal management coolant pipe. The first coolant pipe is connected to the thermal management coolant pipe through the cooling pipe joint device of the electric drive device 11 as described in any of the above items.

[0056] With such a configuration, the electric drive device and cooling system provided in this embodiment can solve the problem that when the cooling pipeline releases coolant, the coolant is easily splashed, thereby contaminating the surrounding wiring harnesses and pipelines. The derivation process of this beneficial effect is generally similar to the derivation process of the beneficial effect brought about by the cooling pipeline joint device of the electric drive device 11, and will not be repeated here.

[0057] In a further embodiment, the coolant channels inside the electric drive device 11 include an electronic control coolant channel and a stator coolant channel. Among them, the electronic control coolant channel is used for heat exchange with the electronic control components, and the stator coolant channel is used for heat exchange with the stator components.

[0058] The first end of the electronic control coolant channel is communicated with the stator coolant channel, and the second end is communicated with the first coolant pipe; the thermal management coolant pipe is communicated with the liquid outlet end of the cooler.

[0059] The coolant cooled by the cooler enters the electronic control coolant channel through the thermal management coolant pipe and the first coolant pipe. After first cooling the electronic control components, it then enters the stator coolant channel to cool the stator components, and then flows out of the electric drive device 11 and into the cooler, thus circulating.

[0060] Although the embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cooling pipe joint device for an electric drive device, characterized in that: include: A first tubular joint portion (13) adapted to be connected to a first coolant pipe of the electric drive device; A second tubular joint portion (12), one end of which is in communication with the first tubular joint portion (13), and the other end of which is suitable for connection with a thermal management coolant pipe; The self-sealing joint (141) is connected to the first tubular joint part (13) and the second tubular joint part (12) to form a three-way structure.

2. The cooling pipe joint device of the electric drive device according to claim 1, characterized in that: Also includes: A connecting plate (15), wherein the first tubular joint portion (13) is connected to a first side of the connecting plate (15), the second tubular joint portion (12) and the self-sealing joint (141) are both connected to a second side of the connecting plate (15), and the connecting plate (15) is suitable for connecting to a cover plate (16) of an electric drive device (11).

3. The cooling pipe joint device of the electric drive device according to claim 2, characterized in that: A cavity structure is provided inside the connection plate (15), and the first tubular joint portion (13), the second tubular joint portion (12) and the self-sealing joint (141) are all in communication with the cavity structure.

4. The cooling pipe joint device of the electric drive device according to claim 3, characterized in that: The first tubular joint portion (13), the second tubular joint portion (12) and the self-sealing joint (141) can all be detachably connected to the connecting plate (15).

5. The cooling pipe joint device of the electric drive device according to claim 3, characterized in that: The connecting plate (15), the first tubular joint portion (13) and the second tubular joint portion (12) are arranged as an integrated structure.

6. The cooling pipe joint device of the electric drive device according to claim 2, characterized in that: The connecting plate (15) is provided with a plurality of connecting holes, and the connecting plate (15) is suitable for being connected to a cover plate (16) of an electric drive device (11) via connecting pieces inserted into the connecting holes.

7. The cooling pipe joint device of the electric drive device according to claim 1, characterized in that: A sealing mechanism is provided inside the self-sealing joint (141), and the external liquid discharge joint (142) is arranged to cooperate with the self-sealing joint (141) in a quick-plug manner, and when the liquid discharge joint (142) is plugged into the self-sealing joint (141), the sealing mechanism of the self-sealing joint (141) is opened.

8. An electric drive device, characterized in that: include: A cooling pipe joint device for an electric drive device as claimed in any one of claims 1 to 7.

9. A cooling system, characterized in that: include: An electric drive device (11), comprising an electric control component, a stator component and a coolant channel, wherein the coolant channel is in communication with the electric control component and the stator component; a first coolant pipe, connected to the coolant channel; A cooler provided with a heat management coolant pipe; Wherein, the first coolant pipe is connected to the thermal management coolant pipe through the cooling pipe joint device of the electric drive device according to any one of claims 1 to 7.

10. The cooling system according to claim 9, characterized in that The coolant channel comprises: An electronically controlled coolant channel, used for exchanging heat with the electronically controlled component; a stator coolant channel, used for exchanging heat with the stator assembly; The first end of the electronically controlled coolant channel is in communication with the stator coolant channel, and the second end is in communication with the first coolant pipe; the thermal management coolant pipe is in communication with the liquid outlet of the cooler.

Images