Cooling device and vehicle-mounted power supply

Abstract

The utility model provides a cooling device and a vehicle-mounted power source.The cooling device comprises a main pipeline, a plurality of branch pipelines and a plurality of electromagnetic valves, the main pipeline communicates with a liquid inlet pipeline and is used for circulating cooling liquid, and one ends of the branch pipelines communicate with one another and communicate with the main pipeline; the other ends of the branch pipelines are arranged at intervals in the first direction and extend in the second direction, the first direction is perpendicular to the second direction, the branch pipelines are provided with a plurality of first water outlet holes corresponding to the vehicle-mounted chargers, and the first water outlet holes are used for spraying cooling liquid in the branch pipelines to the vehicle-mounted chargers. The electromagnetic valves are arranged on the sides, close to the main pipeline, of the branch pipelines and used for controlling the flow direction and the flow speed of cooling liquid in the branch pipelines. The multiple branch pipelines can correspond to different areas of the vehicle-mounted charger, so that the multiple areas of the vehicle-mounted charger are effectively cooled, and the cooling effect of the cooling device on the vehicle-mounted charger is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted chargers, and in particular to a cooling device and a vehicle-mounted power supply. Background Art

[0002] The on-board charger (OBC) is a key component in new energy vehicles. It is responsible for converting alternating current (AC) from the power grid into direct current (DC) required by the electric vehicle's high-voltage battery to meet the charging needs of the electric vehicle's power battery.

[0003] However, the on-board charger generates a large amount of heat during operation. In related technologies, the heat dissipation effect of the on-board charger is poor, which causes the internal temperature of the entire on-board charger to rise, affecting its service life and reliability. Utility Model Content

[0004] The purpose of this application is to provide a cooling device and an on-board power supply to solve the technical problem of poor heat dissipation effect of on-board chargers in the related art.

[0005] In a first aspect, the present application provides a cooling device installed on a vehicle charger, the cooling device comprising:

[0006] a main pipeline, the main pipeline being connected to the liquid inlet pipeline and used for circulating the cooling liquid;

[0007] a plurality of branch pipes, one ends of the plurality of branch pipes being connected to each other and to the main pipe, the other ends of the plurality of branch pipes being spaced apart along a first direction and extending along a second direction, the first direction being perpendicular to the second direction, the branch pipes being used to circulate the cooling liquid, the branch pipes being provided with a plurality of first water outlets corresponding to the on-board chargers, the first water outlets being used to spray the cooling liquid in the branch pipes to the on-board chargers; and

[0008] A plurality of solenoid valves are provided on a side of the branch pipe close to the main pipe, and the solenoid valves are used to control the flow direction and flow rate of the cooling liquid in the branch pipe.

[0009] In the cooling device provided herein, one end of a plurality of branch pipes is interconnected and connected to a main pipe, and the other ends of the plurality of branch pipes are spaced apart along a first direction and extend along a second direction. A first water outlet is used to spray cooling liquid within the branch pipes onto the onboard charger. A solenoid valve is provided on a side of the branch pipe close to the main pipe, and the solenoid valve is used to control the flow direction and flow rate of the cooling liquid within the branch pipe. The plurality of branch pipes can correspond to different areas of the onboard charger, so that the plurality of branch pipes can spray cooling liquid to different areas of the onboard charger, thereby effectively dissipating heat from the multiple areas of the onboard charger and improving the cooling effect of the cooling device on the onboard charger. Furthermore, each of the plurality of branch pipes is provided with a solenoid valve, which can control the flow rate of the cooling liquid within the plurality of branch pipes to be different, so that different flow rates of cooling liquid are sprayed to different areas of the onboard charger, thereby achieving different heat dissipation effects for different areas of the onboard charger, thereby avoiding problems such as malfunction caused by uneven temperatures in different areas of the charger.

[0010] In which, the cooling device also includes a plurality of internal pipes, which are arranged in the branch pipes and the internal pipes and the branch pipes are abutted; the internal pipes are used to circulate the cooling liquid, and the internal pipes are provided with a plurality of second water outlet holes, and the internal pipes are used to move relative to the branch pipes so that the second water outlet holes of the internal pipes and the first water outlet holes of the branch pipes are completely aligned, partially aligned, or not aligned.

[0011] In which, the cooling device also includes a movable motor, which is connected to the internal pipe and is used to drive the internal pipe to translate relative to the branch pipe along the second direction so that the second water outlet of the internal pipe and the first water outlet of the branch pipe are completely aligned, partially aligned, or not aligned.

[0012] In which, the cooling device also includes a rotating motor, which is connected to the internal pipe and is used to drive the internal pipe to rotate around its axis relative to the branch pipe so that the second water outlet hole of the internal pipe and the first water outlet hole of the branch pipe are completely aligned, partially aligned, or not aligned.

[0013] The internal pipe is provided with a plurality of groups of the second water outlet holes along the second direction, and a group of the second water outlet holes corresponds to one of the first water outlet holes of the branch pipe; and a group of the second water outlet holes includes at least one second water outlet hole.

[0014] Among them, the cooling device also includes a shell, and the shell and the bottom of the on-board charger are enclosed to form a receiving space for accommodating multiple branch pipes, and the multiple first water outlet holes of the multiple branch pipes are arranged corresponding to the bottom of the on-board charger.

[0015] In which, the shell includes a bottom plate, and a water outlet pipe is provided on the side of the bottom plate away from the branch pipe, the water outlet pipe is connected to the receiving space, and the water outlet pipe is used to discharge the cooling liquid after cooling the on-board charger; the bottom plate includes a first inclined surface and a second inclined surface connected to each other, and the water outlet pipe is provided at the connection between the first inclined surface and the second inclined surface. In the third direction, the first inclined surface and the second inclined surface are inclined in a direction close to the water outlet pipe, and the third direction is the setting direction of the branch pipe and the bottom plate.

[0016] In a second aspect, the present application provides an on-vehicle power supply, comprising an on-vehicle charger and the cooling device, wherein the cooling device is installed at the bottom of the on-vehicle charger.

[0017] In which, the on-board charger also includes a controller and multiple temperature sensors, the multiple temperature sensors are arranged at the bottom of the on-board charger, the controller is electrically connected to the multiple temperature sensors and the multiple solenoid valves, and the controller can be used to control the solenoid valves according to the sensing information of the temperature sensors to control the flow rate of the cooling liquid in the multiple branch pipes.

[0018] Among them, the on-board power supply also includes multiple fixings and sealing parts. The bottom of the on-board charger is provided with multiple fixing holes. The fixings cooperate with the fixing holes to fix the cooling device to the bottom of the on-board charger. The sealing part is provided between the on-board charger and the shell, and the sealing part is used to seal the gap between the on-board charger and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic structural diagram of a vehicle-mounted power supply provided by an embodiment of the present application;

[0021] Figure 2 This is a schematic structural diagram of a cooling device provided in an embodiment of the present application;

[0022] Figure 3This is a schematic structural diagram of a cooling device including a nozzle provided in an embodiment of the present application;

[0023] Figure 4 This is a schematic structural diagram of a nozzle provided in an embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the structure of multiple internal pipes provided in an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of a structure in which an internal pipe is arranged in a branch pipe according to an embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of a structure in which a first water outlet and a second water outlet are completely aligned, provided by an embodiment of the present application;

[0027] Figure 8 This is a schematic diagram of a structure in which a first water outlet hole and a second water outlet hole are partially aligned, provided by an embodiment of the present application;

[0028] Figure 9 This is a schematic diagram of a structure in which the first water outlet and the second water outlet are not aligned, provided by an embodiment of the present application;

[0029] Figure 10 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 1 ;

[0030] Figure 11 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 2 ;

[0031] Figure 12 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 3 ;

[0032] Figure 13 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 4 ;

[0033] Figure 14 This is a schematic cross-sectional view of a vehicle-mounted power supply provided in an embodiment of the present application;

[0034] Figure 15 This is a structural schematic diagram of a vehicle charger provided by an embodiment of the present application, in which multiple temperature sensors are provided at the bottom.

[0035] Description of labels:

[0036] On-board power supply 1000, cooling device 100, main pipe 10, branch pipe 20, first branch pipe 21, second branch pipe 22, third branch pipe 23, first water outlet 24, solenoid valve 30, nozzle 40, internal pipe 50, first internal pipe 51, second internal pipe 52, third internal pipe 53, second water outlet 54, shell 60, bottom plate 61, first inclined surface 611, second inclined surface 612, water outlet pipe 62, temperature sensor 70, fixing part 81, sealing part 82, mobile motor 90, on-board charger 200. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] It should be noted that the terms "first," "second," and so on in the specification, claims, and drawings of this application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the orientation of the constituent elements being described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced depending on the circumstances.

[0040] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the meaning of these terms in this disclosure based on the specific circumstances.

[0041] The on-board charger (OBC) is a key component in new energy vehicles. It is responsible for converting alternating current (AC) from the power grid into direct current (DC) required by the electric vehicle's high-voltage battery to meet the charging needs of the electric vehicle's power battery.

[0042] The on-board charger generates a large amount of heat during operation, and the on-board charger is installed inside the electric vehicle, and will be installed in the same space with many components used in the electric vehicle. The heat emitted by the internal components of the vehicle when in use and the heat emitted by the on-board charger when in use are superimposed on each other, further increasing the internal temperature of the on-board charger.

[0043] However, in the related art, the heat dissipation effect of the on-board charger is poor, resulting in an increase in the internal temperature of the entire on-board charger. In severe cases, it may cause the internal circuit board of the on-board charger to burn out or short-circuit, affecting the service life and working reliability of the on-board charger, and affecting the use of other surrounding automotive parts.

[0044] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of a vehicle-mounted power supply provided by an embodiment of the present application. Figure 2 Schematic diagram of a cooling device according to an embodiment of the present application. The present application provides a cooling device 100 , which is mounted on an onboard charger 200 to solve the technical problem of poor heat dissipation of onboard chargers in related art.

[0045] The cooling device 100 includes a main pipeline 10, multiple branch pipelines 20, and multiple solenoid valves 30. The main pipeline 10 is connected to the liquid inlet pipeline and is used to circulate cooling liquid. One end of the multiple branch pipelines 20 is connected to each other and to the main pipeline 10. The other ends of the multiple branch pipelines 20 are spaced apart along a first direction D1 and extend along a second direction D2, with the first direction D1 being perpendicular to the second direction D2. The branch pipelines 20 are used to circulate the cooling liquid. The branch pipelines 20 are provided with multiple first water outlets 24 corresponding to the onboard chargers 200. The first water outlets 24 are used to spray the cooling liquid in the branch pipelines 20 to the onboard chargers 200. The solenoid valves 30 are located on the side of the branch pipelines 20 near the main pipeline 10 and are used to control the flow direction and flow rate of the cooling liquid in the branch pipelines 20.

[0046] The cooling device 100 includes the main pipe 10, which is connected to the liquid inlet pipe. The storage device is connected to the liquid inlet pipe and is used to store cooling liquid and transfer the cooling liquid to the main pipe 10 through the liquid inlet pipe for use by the cooling device 100. Optionally, the cooling liquid includes, but is not limited to, water, oil, ethylene glycol, propylene glycol, or other chemical substances with good cooling effects and stable chemical properties.

[0047] The cooling device 100 includes a plurality of branch pipes 20, one end of each of which is connected to each other and to the main pipe 10, that is, the cooling liquid in the main pipe 10 can flow into the plurality of branch pipes 20 respectively. The other ends of the plurality of branch pipes 20 are arranged at intervals along the first direction D1 and extend along the second direction D2. The branch pipes 20 are provided with a plurality of first water outlets 24 corresponding to the on-board charger 200. In other words, the first water outlets 24 are provided on the side of the branch pipes 20 facing the on-board charger 200. The first water outlets 24 are used to spray the cooling liquid in the branch pipes 20 to the on-board charger 200. Specifically, the temperature of the cooling liquid is relatively low. When the cooling liquid is sprayed to the on-board charger 200 through the first water outlets 24 of the branch pipes 20, the cooling liquid can exchange heat with the on-board charger 200 and take away the heat of the on-board charger 200, so as to effectively dissipate heat from the on-board charger 200. Figure 1 As shown, the first direction D1 is the width direction of the on-board charger 200 and the cooling device 100 , and the second direction D2 is the length direction of the on-board charger and the cooling device 100 .

[0048] Furthermore, the other ends of the multiple branch pipes 20 are arranged at intervals along the first direction D1 and extend along the second direction D2, that is, the multiple branch pipes 20 can correspond to different areas of the on-board charger 200, so that the multiple branch pipes 20 can spray the cooling liquid to different areas of the on-board charger 200, thereby effectively dissipating heat from multiple areas of the on-board charger 200, thereby improving the heat dissipation effect of the cooling device 100 on the on-board charger 200.

[0049] The cooling device 100 includes a plurality of solenoid valves 30, each corresponding to one of the branch pipes 20. The solenoid valves 30 are disposed at one end of the branch pipe 20 near the main pipe 10. The solenoid valves 30 can be used to control the flow direction and flow rate of the cooling liquid in the branch pipe 20. Specifically, when the solenoid valves 30 are closed, the cooling liquid in the main pipe 10 cannot flow through the solenoid valves 30 to the branch pipe 20. When the solenoid valves 30 are open, the cooling liquid in the main pipe 10 can flow through the solenoid valves 30 to the branch pipe 20. The solenoid valves 30 can also control the valve size, thereby controlling the flow rate of the cooling liquid in the branch pipe 20.

[0050] Furthermore, the solenoid valve 30 is provided on each of the plurality of branch pipes 20, which can control the flow rate of the cooling liquid in the plurality of branch pipes 20 to be different, so as to spray the cooling liquid at different flow rates to different areas of the on-board charger 200, thereby achieving different heat dissipation methods for different areas of the on-board charger 200. For example, in areas with higher temperatures of the on-board charger 200, the solenoid valve 30 can be used to control the flow rate of the cooling liquid in the branch pipe 20 to increase, thereby improving the heat dissipation efficiency for the higher temperature areas of the on-board charger 200. In areas with lower temperatures of the on-board charger 200, the solenoid valve 30 can be used to control the flow rate of the cooling liquid in the branch pipe 20 to decrease, thereby reducing the heat dissipation efficiency for the higher temperature areas of the on-board charger 200. This can avoid problems such as malfunction caused by uneven temperatures in different areas of the on-board charger.

[0051] Wherein, the number of the branch pipes 20 is multiple. Optionally, the number of the branch pipes 20 includes but is not limited to 2, 3, 4, 5, or more than 5, and this application does not impose any restrictions on this. In this embodiment, the number of the branch pipes 20 is 3 for schematic illustration, which should not be understood as a limitation on this application. The three branch pipes 20 are respectively a first branch pipe 21, a second branch pipe 22, and a third branch pipe 23. The first branch pipe 21 and the third branch pipe 23 are respectively arranged on both sides of the second branch pipe 22, and the first branch pipe 21 and the third branch pipe 23 are symmetrically arranged relative to the second branch pipe 22.

[0052] There are multiple solenoid valves 30, and the number of the solenoid valves 30 corresponds to the number of the branch pipes 20. Similarly, the number of the solenoid valves 30 includes but is not limited to 2, 3, 4, 5, or more than 5, and this application does not impose any restrictions on this. In this embodiment, the number of the branch pipes 20 is 3 for schematic illustration. Similarly, the number of the solenoid valves 30 is also 3, and one solenoid valve 30 is provided on each of the first branch pipe 21, the second branch pipe 22, and the third branch pipe.

[0053] The number of the first water outlet holes 24 on a branch pipe 20 is multiple. Optionally, the number of the first water outlet holes 24 on a branch pipe 20 includes, but is not limited to, 2, 3, 4, 5, or more than 5. This application does not impose any limitation on this. In this embodiment, the number of the first water outlet holes 24 on a branch pipe 20 is 3 for schematic illustration, which should not be construed as a limitation on this application.

[0054] In the cooling device 100 provided herein, one end of the plurality of branch pipes 20 is interconnected and connected to the main pipe 10. The other ends of the plurality of branch pipes 20 are spaced apart along a first direction D1 and extend along a second direction D2. The first water outlet 24 is used to spray the cooling liquid within the branch pipes 20 toward the onboard charger 200. The solenoid valve 30 is disposed on the side of the branch pipe 20 near the main pipe 10 and is used to control the flow direction and flow rate of the cooling liquid within the branch pipe 20. The plurality of branch pipes 20 can correspond to different areas of the onboard charger 200, enabling the plurality of branch pipes 20 to spray the cooling liquid to different areas of the onboard charger 200, thereby effectively dissipating heat from multiple areas of the onboard charger 200 and improving the cooling effect of the cooling device 100 on the onboard charger 200. Furthermore, the solenoid valve 30 is provided on each of the plurality of branch pipes 20, which can control the flow rate of the cooling liquid in the plurality of branch pipes 20 to be different, so as to spray the cooling liquid with different flow rates to different areas of the on-board charger 200, so as to achieve different heat dissipation effects for different areas of the on-board charger 200, thereby avoiding problems such as abnormal operation caused by uneven temperatures in various areas of the on-board charger.

[0055] Please refer to Figures 3 and 4 , Figure 3 Schematic diagram of a cooling device including a nozzle provided in an embodiment of the present application. Figure 4This is a schematic diagram of the structure of a nozzle provided in an embodiment of the present application. In one embodiment, the cooling device 100 further includes a plurality of nozzles 40, which are disposed on the first water outlet 24. The cooling liquid is ejected from the nozzles 40 under pressure, forming a conical spray effect and impacting the on-board charger 200 at a predetermined speed and direction.

[0056] Please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of a structure of multiple internal pipes provided in an embodiment of the present application. Figure 6 Schematic diagram of an internal pipe disposed within a branch pipe according to an embodiment of the present application. In one embodiment, the cooling device 100 further includes a plurality of internal pipes 50 disposed within the branch pipe 20 and abutting against the branch pipe 20. The internal pipes 50 are used to circulate the cooling liquid and are provided with a plurality of second water outlet holes 54. The internal pipes 50 are configured to move relative to the branch pipe 20 so that the second water outlet holes 54 of the internal pipes 50 are fully aligned, partially aligned, or misaligned with the first water outlet holes 24 of the branch pipe 20.

[0057] The internal pipe 50 is disposed within the branch pipe 20 and communicates with the main pipe 10. The internal pipe 50 can be used to circulate the cooling liquid. The internal pipe 50 is disposed within the branch pipe 20 and abuts against the inner wall of the branch pipe 20 to prevent the cooling liquid in the internal pipe 50 from flowing into the gap between the internal pipe 50 and the branch pipe 20.

[0058] The inner pipe 50 is provided with a plurality of second water outlet holes 54 , and the inner pipe 50 can move relative to the branch pipe 20 so that the second water outlet holes 54 of the inner pipe 50 and the first water outlet holes 24 of the branch pipe 20 are completely aligned, partially aligned, or not aligned.

[0059] Specifically, if Figure 7 As shown, Figure 7 This is a schematic diagram of a structure in which the first water outlet and the second water outlet are completely aligned, as provided in an embodiment of the present application. The second water outlet 54 of the internal pipe 50 is completely aligned with the first water outlet 24 of the branch pipe 20. At this time, the cooling liquid in the internal pipe 50 continues to be ejected through the first water outlet 24 when ejected from the second water outlet 54, and will not be blocked by the branch pipe 20, and the flow rate of the cooling liquid is relatively large. Figure 8 As shown, Figure 8This is a schematic diagram of a structure in which a first water outlet and a second water outlet are partially aligned, as provided in an embodiment of the present application. The second water outlet 54 of the internal pipe 50 is partially aligned with the first water outlet 24 of the branch pipe 20. At this time, when the cooling liquid in the internal pipe 50 is ejected from the second water outlet 54, a part of the cooling liquid continues to be ejected through the first water outlet 24, and a part will be blocked by the branch pipe 20. The flow rate of the cooling liquid is moderate. Moreover, as the alignment area of the second water outlet 54 and the first water outlet 24 decreases, the flow rate of the cooling liquid will also decrease accordingly. Figure 9 As shown, Figure 9 This is a schematic diagram of a structure in which the first and second water outlets are misaligned, as provided in an embodiment of the present application. The second water outlet 54 of the internal pipe 50 and the first water outlet 24 of the branch pipe 20 are misaligned, and the cooling liquid cannot be sprayed from the first and second water outlets 24, 54, to the on-board charger 200. It should be noted that this embodiment only uses three states of the second water outlet 54 and the first water outlet 24 as examples. Due to the movement of the internal pipe 50, the alignment of the second water outlet 54 and the first water outlet 24 is not limited to the above three states, and this application does not impose any restrictions on this.

[0060] Furthermore, when the first water outlet 24 and the second water outlet 54 are fully aligned, the cooling liquid is ejected at a higher flow rate from the first water outlet 24. A higher cooling liquid flow rate provides a stronger heat dissipation effect on the onboard charger 200. As the alignment area between the first water outlet 24 and the second water outlet 54 decreases, the cooling liquid flow rate ejected from the first water outlet 24 also decreases, and the cooling liquid's heat dissipation effect on the onboard charger 200 also decreases.

[0061] Specifically, when the temperature of the on-board charger 200 is high, the second water outlet 54 of the internal pipe 50 and the first water outlet 24 of the branch pipe 20 can be controlled to be completely aligned, thereby increasing the flow rate of the cooling liquid and improving the heat dissipation effect on the on-board charger 200. When the temperature of the on-board charger 200 drops, the internal pipe 50 can be controlled to move so that the second water outlet 54 of the internal pipe 50 and the first water outlet 24 of the branch pipe 20 are partially aligned, thereby reducing the flow rate of the cooling liquid and adjusting the heat dissipation effect of the cooling device 100 on the on-board charger 200.

[0062] Furthermore, the movement of the multiple internal pipes 50 can be controlled separately. For example, the internal pipes 50 include a first internal pipe 51, a second internal pipe 52, and a third internal pipe 53. The first internal pipe 51 is disposed within the first branch pipe 21, the second internal pipe 52 is disposed within the second branch pipe 22, and the third internal pipe 53 is disposed within the third branch pipe 23. The first internal pipe 51 can be moved relative to the first branch pipe 21 until the first and second water outlet holes 24 and 54 are fully aligned. The second internal pipe 52 can be moved relative to the second branch pipe 22 until the first and second water outlet holes 24 and 54 are partially aligned. The third internal pipe 53 can be moved relative to the third branch pipe 23 until the first and second water outlet holes 24 and 54 are not aligned. This allows the first, second, and third branch pipes 21, 22, and 23 to provide different heat dissipation effects on different areas of the on-board charger 200.

[0063] To sum up, the internal pipe 50 can adjust the heat dissipation effect of the branch pipe 20 on the on-board charger 20 while moving relative to the branch pipe 20, so that the cooling device 100 can control the flow rate of the cooling liquid appropriately according to the temperature of the on-board charger 200, and the multiple internal pipes 50 can be controlled separately to achieve different heat dissipation effects for different areas of the on-board charger 200, which can avoid problems such as abnormal operation caused by uneven temperatures in various areas of the on-board charger.

[0064] Please refer to Figure 5 and Figure 6 Specifically, in one embodiment, the cooling device 100 further includes a movable motor 90, which is connected to the internal pipe 50. The movable motor 90 is used to drive the internal pipe 50 to translate relative to the branch pipe 20 along the second direction D2, so that the second water outlet 54 of the internal pipe 50 and the first water outlet 24 of the branch pipe 20 are completely aligned, partially aligned, or not aligned.

[0065] Specifically, in one embodiment, the cooling device 100 also includes a cylinder motor, which is connected to the internal pipe 50. The cylinder motor is used to drive the internal pipe 50 to translate relative to the branch pipe 20 along the second direction D2, so that the second water outlet 54 of the internal pipe 50 and the first water outlet 24 of the branch pipe 20 are completely aligned, partially aligned, or not aligned.

[0066] Specifically, in one embodiment, the cooling device 100 also includes a rotating motor, which is connected to the internal pipe 50. The rotating motor is used to drive the internal pipe 50 to rotate around its axis relative to the branch pipe 20, so that the second water outlet 54 of the internal pipe 50 and the first water outlet 24 of the branch pipe 20 are completely aligned, partially aligned, or not aligned.

[0067] In one embodiment, the inner pipe 50 is provided with multiple groups of second water outlet holes 54 along the second direction D2, and a group of second water outlet holes 54 corresponds to one first water outlet hole 24 of the branch pipe 20. A group of second water outlet holes 54 includes at least one second water outlet hole 54.

[0068] like Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 1 A group of the second water outlet holes 54 includes one second water outlet hole 54,

[0069] like Figure 11 As shown, Figure 11 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 2 A group of the second water outlet holes 54 includes two second water outlet holes 54 spaced apart along the circumference of the inner pipe 50 .

[0070] like Figure 12 As shown, Figure 12 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 3 A group of the second water outlet holes 54 includes three second water outlet holes 54 spaced apart along the circumference of the inner pipe 50 .

[0071] like Figure 13 As shown, Figure 13 This is a schematic diagram of the structure of an internal pipeline provided by the embodiment of this application. Figure 4 The set of the second water outlet holes 54 includes four second water outlet holes 54 spaced apart along the circumference of the inner pipe 50 .

[0072] Please refer to Figure 2 、 Figure 3 and Figure 6 In one embodiment, the cooling device 100 further includes a shell 60, which encloses the bottom of the on-board charger 200 to form a receiving space for accommodating the plurality of branch pipes 20, and the plurality of first water outlet holes 24 of the plurality of branch pipes 20 are arranged corresponding to the bottom of the on-board charger 200.

[0073] Specifically, the cooling device 100 is disposed at the bottom of the onboard charger 200. The plurality of branch pipes 20 pass through the housing 60, with the first water outlets 24 of the plurality of branch pipes 20 facing the bottom of the onboard charger 200. This allows the cooling liquid ejected from the first water outlets 24 to fall onto the housing 60 due to gravity after passing through the onboard charger 200 and be collected by the housing 60.

[0074] Please refer to Figure 14 In one embodiment, the shell 60 includes a bottom plate 61, and a water outlet pipe 62 is provided on the side of the bottom plate 61 away from the branch pipe 20. The water outlet pipe 62 is connected to the receiving space, and the water outlet pipe 62 is used to discharge the cooling liquid after cooling the on-board charger 200.

[0075] The bottom plate 61 includes a first inclined surface 611 and a second inclined surface 612 connected to each other, and the water outlet pipe 62 is arranged at the connection between the first inclined surface 611 and the second inclined surface 612. In the third direction D3, the first inclined surface 611 and the second inclined surface 612 are inclined in a direction close to the water outlet pipe 62. The third direction D3 is the setting direction of the branch pipe 20 and the bottom plate 61.

[0076] The arrangement of the first inclined surface 611 and the second inclined surface 612 can ensure that the cooling liquid flows out of the water outlet pipe 62 under the action of gravity, thereby preventing the cooling liquid from remaining in the cooling device 100 .

[0077] Please refer to Figure 1 and Figure 14 , Figure 14 This application also provides a vehicle-mounted power supply 1000, which includes an on-board charger 200 and the cooling device 100, wherein the cooling device 100 is installed at the bottom of the on-board charger 200.

[0078] In the on-board power supply 1000 provided herein, one end of the plurality of branch pipes 20 is interconnected and connected to the main pipe 10. The other ends of the plurality of branch pipes 20 are spaced apart along a first direction D1 and extend along a second direction D2. The first water outlet 24 is used to spray the cooling liquid within the branch pipes 20 toward the on-board charger 200. The solenoid valve 30 is disposed on the side of the branch pipe 20 near the main pipe 10 and is used to control the flow direction and flow rate of the cooling liquid within the branch pipe 20. The plurality of branch pipes 20 can correspond to different areas of the on-board charger 200, enabling the plurality of branch pipes 20 to spray the cooling liquid to different areas of the on-board charger 200, thereby effectively dissipating heat from multiple areas of the on-board charger 200 and improving the heat dissipation effect of the cooling device 100 on the on-board charger 200. Furthermore, the solenoid valve 30 is provided on each of the plurality of branch pipes 20, which can control the flow rate of the cooling liquid in the plurality of branch pipes 20 to be different, so as to spray the cooling liquid with different flow rates to different areas of the on-board charger 200, so as to achieve different heat dissipation effects for different areas of the on-board charger 200, thereby avoiding problems such as abnormal operation caused by uneven temperatures in various areas of the on-board charger.

[0079] Furthermore, the on-board power supply 1000 does not require a complex water system to dissipate heat from the on-board charger 200. The cooling device 100 can be directly removed from the on-board charger 200, achieving a separate cooling system. This results in a simple overall structure and strong heat dissipation. The on-board charger 200 of the on-board power supply 1000 dissipates heat through the cooling device 100. The cooling device 100 has a strong heat dissipation capability and is easy to install and remove from the on-board charger 200. This on-board power supply 1000 is low-cost and highly adaptable.

[0080] Please refer to Figure 14 and Figure 15 , Figure 15 The diagram is a schematic diagram of a structure in which multiple temperature sensors are installed at the bottom of an on-board charger according to an embodiment of the present application. In one embodiment, the on-board charger 200 further includes a controller (not shown) and multiple temperature sensors 70 . The multiple temperature sensors 70 are installed at the bottom of the on-board charger 200 . The controller is electrically connected to the multiple temperature sensors 70 and the multiple solenoid valves 30 . The controller can be used to control the solenoid valves 30 based on the sensor information of the temperature sensors 70 to control the flow rate of the cooling liquid in the multiple branch pipes 20 .

[0081] In addition, the controller is also electrically connected to the moving motor, or the cylinder motor, or the rotating motor. The controller can be used to control the movement of the multiple internal pipes 50 according to the sensing information of the temperature sensor 70 to achieve different heat dissipation effects for different areas of the on-board charger 200.

[0082] Please refer to Figure 2 、 Figure 3 、 Figure 6 and Figure 14 In one embodiment, the on-board power supply 1000 further includes a plurality of fixing members 81 and a sealing member 82. The bottom of the on-board charger 200 is provided with a plurality of fixing holes. The fixing members 81 cooperate with the fixing holes to fix the cooling device 100 to the bottom of the on-board charger 200.

[0083] The seal 82 is disposed between the on-board charger 200 and the housing 60 . The seal 82 is used to seal the gap between the on-board charger 200 and the housing 60 to prevent the cooling liquid in the receiving space from leaking from the gap between the on-board charger 200 and the housing 60 .

[0084] Mentioning "embodiments" and "implementation methods" in this application means that the specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrases in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should be understood that the features, structures or characteristics described in the various embodiments of the present application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application, unless there is a contradiction between them.

[0085] The above is part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A cooling device, characterized in that: Installed on the on-board charger, the cooling device includes: a main pipeline, the main pipeline being connected to the liquid inlet pipeline and used for circulating the cooling liquid; a plurality of branch pipes, one ends of the plurality of branch pipes being connected to each other and to the main pipe, the other ends of the plurality of branch pipes being spaced apart along a first direction and extending along a second direction, the first direction being perpendicular to the second direction, the branch pipes being used to circulate the cooling liquid, the branch pipes being provided with a plurality of first water outlets corresponding to the on-board chargers, the first water outlets being used to spray the cooling liquid in the branch pipes to the on-board chargers; and A plurality of solenoid valves are provided on a side of the branch pipe close to the main pipe, and the solenoid valves are used to control the flow direction and flow rate of the cooling liquid in the branch pipe.

2. The cooling device according to claim 1, characterized in that The cooling device also includes a plurality of internal pipes, which are arranged in the branch pipes and abut against the branch pipes; the internal pipes are used to circulate the cooling liquid, and the internal pipes are provided with a plurality of second water outlet holes, which are used to move relative to the branch pipes so that the second water outlet holes of the internal pipes and the first water outlet holes of the branch pipes are completely aligned, partially aligned, or not aligned.

3. The cooling device according to claim 2, characterized in that The cooling device also includes a moving motor, which is connected to the internal pipe and is used to drive the internal pipe to translate relative to the branch pipe along the second direction so that the second water outlet hole of the internal pipe and the first water outlet hole of the branch pipe are completely aligned, partially aligned, or not aligned.

4. The cooling device according to claim 2, characterized in that The cooling device also includes a rotating motor connected to the internal pipe, and the rotating motor is used to drive the internal pipe to rotate around its axis relative to the branch pipe so that the second water outlet hole of the internal pipe and the first water outlet hole of the branch pipe are completely aligned, partially aligned, or not aligned.

5. The cooling device according to claim 2, characterized in that The internal pipe is provided with a plurality of groups of the second water outlet holes along the second direction, and a group of the second water outlet holes corresponds to one of the first water outlet holes of the branch pipe; and a group of the second water outlet holes includes at least one second water outlet hole.

6. The cooling device according to claim 1, characterized in that The cooling device also includes a shell, which is enclosed with the bottom of the on-board charger to form a receiving space for receiving the plurality of branch pipes, and the plurality of first water outlet holes of the plurality of branch pipes are arranged corresponding to the bottom of the on-board charger.

7. The cooling device according to claim 6, characterized in that The shell includes a bottom plate, and a water outlet pipe is provided on the side of the bottom plate facing away from the branch pipe. The water outlet pipe is connected to the receiving space, and the water outlet pipe is used to discharge the cooling liquid after cooling the on-board charger; the bottom plate includes a first inclined surface and a second inclined surface connected to each other, and the water outlet pipe is provided at the connection between the first inclined surface and the second inclined surface. In a third direction, the first inclined surface and the second inclined surface are inclined in a direction close to the water outlet pipe. The third direction is the setting direction of the branch pipe and the bottom plate.

8. A vehicle-mounted power supply, characterized in that: It comprises an on-board charger and the cooling device according to any one of claims 1 to 7, wherein the cooling device is installed at the bottom of the on-board charger.

9. The vehicle-mounted power supply according to claim 8, characterized in that: The on-board charger includes a controller and multiple temperature sensors, and the multiple temperature sensors are arranged at the bottom of the on-board charger. The controller is electrically connected to the multiple temperature sensors and the multiple solenoid valves. The controller can be used to control the solenoid valves according to the sensing information of the temperature sensors to control the flow rate of the cooling liquid in the multiple branch pipes.

10. The vehicle-mounted power supply according to claim 8, characterized in that: The on-board power supply also includes multiple fixings and sealing members. The bottom of the on-board charger is provided with multiple fixing holes. The fixing members cooperate with the fixing holes to fix the cooling device to the bottom of the on-board charger. The sealing member is provided between the on-board charger and the shell, and is used to seal the gap between the on-board charger and the shell.

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