A lightweight and highly integrated vehicle-mounted liquid cooling device

Abstract

The present invention provides a lightweight, highly integrated vehicle-mounted liquid cooling device, including a liquid storage buffer tank, and a liquid cooling pump arranged on the liquid storage buffer tank, wherein the liquid cooling pump is connected to a first three-way valve block through a flange, and the other end of the first three-way valve body is connected to a second three-way valve body through a pipeline; an electric ball valve is also arranged on the pipeline between the first three-way valve body and the second three-way valve body, and a filter is also connected to the liquid storage buffer tank. The present invention adopts a piston-type buffer tank as a buffer and voltage stabilizer, so that the cooling medium of the liquid cooling device is isolated from the external space, forming a closed liquid cooling circulation loop, solving the problem of insufficient liquid level stability and contact with air of the semi-open liquid cooling device; especially when the vehicle is in special driving conditions such as severe bumps, large impact vibrations, etc., the piston can effectively offset or weaken the impact vibration under the action of the spring elastic force, so that the liquid cooling device is always kept full of cooling medium, thereby solving the problem of adverse effects of impact vibrations on the liquid cooling device.

Description

Technical Field

[0001] The invention relates to the technical field of liquid cooling devices, and in particular to a lightweight and highly integrated vehicle-mounted liquid cooling device. Background Art

[0002] With the rapid development of modern electronic technology, vehicle-mounted special electronic equipment is becoming more and more highly integrated and powerful. The power of electronic equipment is getting higher and higher, and its heat loss is also increasing. Traditional air cooling can no longer meet the current cooling needs.

[0003] We are currently entering a period of transition from air cooling to liquid cooling. Currently, more and more large-scale vehicle-mounted special electronic equipment are equipped with dedicated special vehicle-mounted liquid cooling products, such as power amplifier cooling and vehicle-mounted power supply cooling on special equipment vehicles.

[0004] In the automotive field, the design of liquid cooling products for electronic equipment needs to consider many factors. In addition to meeting the liquid cooling and heat dissipation needs of electronic equipment, it must be able to adapt to various harsh environmental conditions and overcome the impact of special application environments on the stable operation of liquid cooling products, such as vehicle bumps and vibrations, sudden acceleration or braking impacts, and steep slope climbing. Therefore, a vehicle cooling system that meets special environments is very necessary.

[0005] At present, the cooling of special electronic equipment on vehicles is divided into natural air cooling, forced air cooling, liquid cooling, and compression refrigeration systems. Among them, natural air cooling and forced air cooling are only used on electronic equipment with low heat generation power, and are extremely dependent on ambient temperature. When the ambient temperature is high, air cooling technology cannot provide enough cooling for electronic equipment. Compression refrigeration can greatly reduce the cooling system's dependence on ambient temperature, and the cooling effect is better than air cooling and liquid cooling. The compression refrigeration system has complex equipment structure, complex control, high cost, and troublesome maintenance, which is not conducive to its promotion and implementation in all fields.

[0006] Although the cooling effect of liquid cooling technology is also limited by the ambient temperature, the circulation of the cooling medium makes the temperature of the components in the electronic equipment evenly distributed. At the same time, the heat dissipation area and position can be enlarged as needed. The overall effect is much better than air cooling and can be applied to electronic equipment with high heat power. At the same time, its maintainability is better than that of the compression refrigeration system.

[0007] At present, most on-board liquid cooling devices use a semi-open buffer pressure-stabilizing system, which mainly realizes the pressure-stabilizing function through a buffer tank with a breathing valve. When the temperature is high, the breathing valve discharges air to reduce the pressure of the liquid cooling device. When the temperature is low, the breathing valve inhales air to avoid excessive negative pressure in the liquid cooling device. Since the breathing port of the breathing valve is small, it is easy to become blocked and fail in harsh environments. In addition, the cooling medium will come into contact with the air, resulting in evaporation and loss, which will affect the performance of the cooling medium over time. Moreover, the liquid level in the tank is extremely unstable during special driving processes such as severe bumps, large impacts and vibrations, which may result in false alarms and may also allow air to mix into the cooling medium, affecting the stable operation of the liquid cooling device. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a lightweight and highly integrated vehicle-mounted liquid cooling device. The liquid cooling device of the present invention is a closed type, and the cooling medium is isolated from the external air to prevent the air from affecting the performance of the cooling medium.

[0009] The technical solution of the present invention is: a lightweight and highly integrated vehicle-mounted liquid cooling device, comprising a liquid storage buffer tank, and a liquid cooling pump disposed on the liquid storage buffer tank and connected to the liquid storage buffer tank, wherein the liquid cooling pump is connected to a first three-way valve block through a square flange, and the other end of the first three-way valve body is connected to a second three-way valve body through a pipeline;

[0010] An electric ball valve is also provided on the pipeline between the first three-way valve body and the second three-way valve body, and a filter is also connected to the liquid storage buffer tank.

[0011] Preferably, the liquid storage buffer tank includes a tank body, a piston is arranged in the tank body, the piston divides the tank body into independent liquid chamber and gas chamber, and the liquid chamber is located at the lower end of the gas chamber, the upper end of the piston is connected to the upper end of the tank body through a spring, the liquid chamber and the gas chamber are isolated by the piston, and volume compensation and self-pressurization are achieved through the elastic force of the spring. During normal operation, the boost pressure is equal to the liquid pressure in the buffer tank, and the system is always kept free of cavities; when the temperature of the liquid cooling device rises, the cooling medium expands, and the compression piston is timely compensated for volume; when the temperature of the liquid cooling device decreases, the cooling medium begins to shrink, and the piston begins to expand under the action of the spring elastic force, compressing the cooling medium capacity of the buffer tank to prevent cavities from appearing in the liquid cooling device. At the same time, when the vehicle is in special driving conditions such as severe bumps, large impact vibrations, etc., the piston, under the action of the spring elastic force, offsets the impact vibration, so that the liquid cooling device is always kept full of cooling medium, thereby solving the problem of adverse effects of impact vibration on the liquid cooling device.

[0012] Preferably, the spring comprises a first spring and a second spring, the first spring is located inside the second spring, and one end of the first spring and the second spring are connected to the piston, and the other end are connected to the upper cover plate of the tank body.

[0013] Preferably, a heater is provided at one end of the liquid storage buffer tank close to the liquid cavity, and the heater heats the liquid storage buffer tank in a non-contact manner.

[0014] Preferably, a lower cover plate is provided on one end of the liquid storage buffer tank close to the liquid chamber, and the heater is provided on the lower cover plate.

[0015] Preferably, a heat insulating pad is provided on the outside of the heater, and a heater sealing plate is provided on the outside of the heat insulating pad.

[0016] Preferably, a liquid level sensor is further provided on one end of the liquid storage buffer tank close to the gas cavity. The liquid level sensor is a pull-rope displacement sensor. One end of the pull-rope of the pull-rope displacement sensor extends into the gas cavity and is fixed on the piston.

[0017] Preferably, the first three-way valve body also has an external cooling liquid supply port.

[0018] Preferably, the second three-way valve body is also provided with an internal cooling liquid supply port and an external cooling liquid return port.

[0019] Preferably, an internal cooling liquid return port is also provided on one side of the filter.

[0020] Preferably, a liquid filling and discharging port is also provided on one side of the liquid storage buffer tank.

[0021] Preferably, a liquid return pressure sensor is also provided on the filter.

[0022] Preferably, the liquid storage buffer tank is further provided with a control box, in which a controller is provided. The controller adopts an automotive-grade single-chip microcomputer, thereby reducing the size of the controller.

[0023] Preferably, the liquid storage buffer tank is also provided with an outlet pressure sensor.

[0024] Preferably, the liquid cooling pump is a DC brushless electric shielded pump.

[0025] Preferably, the second three-way valve body is further provided with a temperature-pressure integrated sensor, and the temperature and pressure are monitored by the temperature-pressure integrated sensor, which not only has a compact structure and high reliability, but also reduces the weight of the device.

[0026] Preferably, the liquid storage buffer tank, the first three-way valve body, the second three-way valve body and the control box are all made of high-strength lightweight aluminum alloy, thereby reducing the overall weight of the device and achieving the requirement for lightweight.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention can be applied to harsh environments with large impact and vibration while effectively controlling the temperature of vehicle-mounted electronic equipment and improving its operating performance. In addition, the present invention is made of high-strength lightweight aluminum alloy, thereby meeting the requirement of lightweight. At the same time, by integrating other structures into the liquid storage buffer tank, the connection eliminates the need for pipes and joints, thereby achieving the requirement of high integration.

[0029] 2. The present invention adopts a piston-type buffer tank as a buffer and voltage stabilizer, so that the cooling medium of the liquid cooling device is isolated from the external space, forming a closed liquid cooling circulation loop, solving the problem of insufficient liquid surface stability and contact with air in the semi-open liquid cooling device; especially when the vehicle is in special driving conditions such as severe bumps and large impact vibrations, the piston can effectively offset or weaken the impact vibration under the action of the spring elastic force, so that the liquid cooling device is always kept full of cooling medium, thereby solving the problem of adverse effects of impact vibration on the liquid cooling device;

[0030] 3. The present invention adopts indirect heating for the buffer tank without contacting the cooling medium. After power is turned on, the heat of the heater is transferred to the cooling medium through the aluminum shell of a certain area, thereby achieving the purpose of heating the cooling medium, and the reliability is high;

[0031] 4. The present invention is simple, efficient and occupies less space. When the ambient temperature is low, most of the cooling medium is not cooled by the radiator and directly passes through the bypass pipeline, thereby avoiding the liquid supply temperature of the liquid cooling device being too low when the ambient temperature is low.

[0032] 5. The present invention is suitable for a liquid cooling device in a vehicle environment that is susceptible to large impact and vibration and where the cooling medium cannot come into contact with the air, and can improve the stability of the liquid cooling device and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the liquid cooling device of the present invention;

[0034] Figure 2 It is a structural schematic diagram of another side of the liquid cooling device of the present invention.

[0035] Figure 3 It is a structural schematic diagram of the liquid storage buffer tank of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the hidden tank body of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the liquid cooling pump of the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the filter of the present invention;

[0039] In the figure, 1-liquid storage buffer tank, 2-liquid cooling pump, 3-first three-way valve block, 4-second three-way valve body; 5-electric ball valve, 6-filter, 7-heater, 8-return liquid pressure sensor, 9-control box, 10-outlet pressure sensor, 11-temperature and pressure integrated sensor;

[0040] 11-tank body, 12-piston, 13-liquid chamber, 14-gas chamber, 15-spring, 16-upper cover, 17-liquid level sensor, 18-lower cover, 19-insulation pad, 20-heater sealing plate, 21-liquid filling and discharging port;

[0041] 31-external cooling liquid supply port;

[0042] 41-internal cooling liquid supply port, 42-external cooling liquid return port;

[0043] 61-Inner coolant return port. DETAILED DESCRIPTION

[0044] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0045] like Figure 1 and 2 As shown, this embodiment provides a lightweight, highly integrated vehicle-mounted liquid cooling device, including a liquid storage buffer tank 1, and a liquid cooling pump 2 arranged on the liquid storage buffer tank 1 and connected to the liquid storage buffer tank 1. In this embodiment, the liquid cooling pump 2 adopts a DC brushless electric shielded pump.

[0046] The liquid cooling pump 2 is connected to the first three-way valve block 3 through a pipeline, and the other end of the first three-way valve body 3 is connected to the second three-way valve body 4 through a pipeline; and an electric ball valve 5 is also arranged on the pipeline between the first three-way valve body 3 and the second three-way valve body 4, and a filter 6 is also connected to the liquid storage buffer tank 1.

[0047] As preferred in this embodiment, Figure 3-4As shown, the liquid storage buffer tank 1 includes a tank body 11, and a piston 12 is arranged in the tank body 11. The piston 12 divides the tank body 11 into independent liquid chambers 13 and gas chambers 14, and the liquid chamber 13 is located at the lower end of the gas chamber 14. The upper end of the piston 12 is connected to the upper end of the tank body 11 through a spring 15, and the liquid chamber 13 and the gas chamber 14 are isolated by the piston 12. The volume compensation and self-pressurization are achieved through the elastic force of the spring 15. During normal operation, the boost pressure is equal to the liquid pressure in the liquid storage buffer tank 1, and the system is always kept free of cavities. When the temperature of the liquid cooling device rises, the cooling medium expands and compresses the piston 12 to perform volume compensation in time. When the temperature of the liquid cooling device decreases, the cooling medium begins to shrink, and the piston 12 begins to expand under the elastic force of the spring 15, compressing the cooling medium capacity of the liquid storage buffer tank 1 to prevent cavities from appearing in the liquid cooling device. At the same time, when the vehicle is driving in a special situation such as severe bumps, large impact vibrations, etc., the piston 12 offsets the impact vibrations under the elastic force of the spring 15, so that the liquid cooling device is always kept full of cooling medium, thereby solving the problem of the adverse effects of impact vibrations on the liquid cooling device.

[0048] As preferred in this embodiment, Figure 4 As shown, the spring 15 includes a first spring and a second spring, the first spring is located inside the second spring, and one end of the first spring and the second spring are connected to the piston 12 , and the other end are connected to the upper cover plate 16 of the tank body 11 .

[0049] As preferred in this embodiment, Figure 3 and 4 As shown, a heater 7 is further provided at one end of the liquid storage buffer tank 1 close to the liquid cavity 13. The heater 7 is a silica gel heating sheet. The heater 7 heats the liquid storage buffer tank 1 in a non-contact manner.

[0050] As a preferred embodiment of the present invention, a lower cover plate 18 is further provided on one end of the liquid storage buffer tank 1 close to the liquid chamber 13, and the heater 7 is provided on the lower cover plate 18. A heat insulation pad 19 is further provided on the outside of the heater 7, and a heater sealing plate 20 is further provided on the outside of the heat insulation pad 19.

[0051] As a preferred embodiment of the present invention, a liquid level sensor 17 is further provided on one end of the liquid storage buffer tank 1 close to the gas chamber 14. The liquid level sensor 17 is a pull-rope displacement sensor. One end of the pull-rope of the pull-rope displacement sensor extends into the gas chamber 14 and is fixed on the piston 12. In the present embodiment, the shell of the liquid level sensor 17 is made of aluminum alloy and is light in weight.

[0052] As preferred in this embodiment, Figure 5 As shown, the first three-way valve body 3 also has an external cooling liquid supply port 31.

[0053] As preferred in this embodiment, Figure 5 As shown, the second three-way valve body 4 is also provided with an inner cooling liquid supply port 41 and an outer cooling liquid return port 42 .

[0054] As preferred in this embodiment, Figure 6 As shown, one side of the filter 6 is also provided with an internal cooling liquid return port 61.

[0055] As preferred in this embodiment, Figure 6 As shown, the filter 6 is also provided with a liquid return pressure sensor 8.

[0056] As a preferred embodiment of the present invention, a liquid filling and discharging port 21 is further provided on one side of the liquid storage buffer tank 1 .

[0057] As a preferred embodiment of the present invention, a control box 9 is further provided on the liquid storage buffer tank 1 , and a controller is provided in the control box 9 , and the controller adopts an automotive-grade single-chip microcomputer.

[0058] As a preferred embodiment of the present invention, an outlet pressure sensor 10 is also provided on the liquid storage buffer tank 1 .

[0059] As a preferred embodiment of the present invention, a temperature-pressure integrated sensor 11 is further provided on the second three-way valve body 4. The present embodiment realizes temperature and pressure monitoring through the temperature-pressure integrated sensor 11, thereby avoiding the installation of temperature and pressure sensors at the same time. It not only has a compact structure and high reliability, but also reduces the weight of the device.

[0060] As a preferred embodiment of the present invention, the liquid storage buffer tank 1, the first three-way valve body 3, the second three-way valve body 4 and the control box 9 are all made of high-strength lightweight aluminum alloy, thereby reducing the overall weight of the device and achieving the requirement for lightweight.

[0061] This embodiment integrates other structural components into the liquid storage buffer tank 1, and omits the connecting pipe and joint, so that the liquid cooling device has a compact structure. In addition, the liquid cooling pump 2 adopts a DC brushless electric shielded pump. The device described in this embodiment has a compact structure, high reliability and light weight.

[0062] When the vehicle is driving in a special situation such as being bumpy or subjected to large impact vibration, the piston 12, under the elastic force of the spring 15, effectively offsets or weakens the impact vibration, allowing the liquid cooling device to always keep the cooling medium full, thereby solving the problem of the adverse effects of impact vibration on the liquid cooling device.

[0063] The above embodiments and descriptions are only for illustrating the principles and best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, all of which fall within the scope of the present invention to be protected.

Claims

1. A lightweight and highly integrated vehicle-mounted liquid cooling device, characterized in that: It comprises a liquid storage buffer tank (1), and a liquid cooling pump (2) arranged on the liquid storage buffer tank (1) and connected to the liquid storage buffer tank (1), the liquid cooling pump (2) being connected to a first three-way valve body (3) via a flange, and the other end of the first three-way valve block (3) being connected to a second three-way valve body (4) via a pipeline; Furthermore, an electric ball valve (5) is provided on the pipeline between the first three-way valve block (3) and the second three-way valve body (4), and a filter (6) is also connected to the liquid storage buffer tank (1); The liquid storage buffer tank (1) comprises a tank body (11), wherein a piston (12) is arranged in the tank body (11), wherein the piston (12) divides the tank body (11) into independent liquid chambers (13) and gas chambers (14), and wherein the liquid chamber (13) is located at the lower end of the gas chamber (14). The upper end of the piston (12) is connected to the upper end of the tank body (11) via a spring (15), and the liquid chamber (13) and the gas chamber (14) are isolated by the piston (12). The volume compensation and self-pressurization are achieved by the elastic force of the spring (15). During normal operation, the pressurization pressure is equal to the liquid pressure in the liquid storage buffer tank (1), and the liquid chamber (13) and the gas chamber (14) are always maintained. The system does not have cavities inside; when the temperature of the liquid cooling device rises, the cooling medium expands, and the compression piston (12) promptly compensates for the volume; when the temperature of the liquid cooling device drops, the cooling medium begins to contract, and the piston (12) begins to expand under the elastic force of the spring (15), compressing the cooling medium capacity of the liquid storage buffer tank (1), thereby preventing the liquid cooling device from having cavities; at the same time, when the vehicle is driving in a special situation such as severe bumps, large impact vibrations, etc., the piston (12) offsets the impact vibration under the elastic force of the spring (15), so that the liquid cooling device is always kept full of cooling medium, thereby solving the problem of the adverse effects of impact vibrations on the liquid cooling device; The spring (15) comprises a first spring and a second spring, wherein the first spring is located inside the second spring, and one end of each of the first spring and the second spring is connected to the piston (12), and the other end of each of the first spring and the second spring is connected to the upper cover plate (16) of the liquid storage buffer tank (1); A heater (7) is also provided at one end of the liquid storage buffer tank (1) close to the liquid chamber (13), and the heater (7) heats the liquid storage buffer tank (1) in a non-contact manner; A lower cover plate (18) is also provided on one end of the liquid storage buffer tank (1) close to the liquid chamber (13), and the heater (7) is provided on the lower cover plate (18); A heat insulating pad (19) is also provided on the outside of the heater (7), and a heater sealing plate 20 is also provided on the outside of the heat insulating pad (19).

2. A lightweight, highly integrated vehicle-mounted liquid cooling device according to claim 1, characterized in that: The liquid cooling pump (2) is a DC brushless electric shielded pump.

3. The lightweight and highly integrated vehicle-mounted liquid cooling device according to claim 1 is characterized in that: A liquid level sensor (17) is also provided on one end of the liquid storage buffer tank (1) close to the gas chamber (14). The liquid level sensor (17) is a pull-rope displacement sensor. One end of the pull-rope of the pull-rope displacement sensor extends into the gas chamber (14) and is fixed on the piston (12).

4. The lightweight and highly integrated vehicle-mounted liquid cooling device according to claim 1 is characterized in that: The first three-way valve block (3) also has an external cooling liquid supply port 31; The second three-way valve body (4) is also provided with a temperature and pressure integrated sensor (11); The second three-way valve body (4) is also provided with an internal cooling liquid supply port (41) and an external cooling liquid return port (42).

5. The lightweight and highly integrated vehicle-mounted liquid cooling device according to claim 1 is characterized in that: The filter (6) is also provided with a liquid return pressure sensor (8); An internal cooling liquid return port (61) is also provided on one side of the filter (6).

6. The lightweight and highly integrated vehicle-mounted liquid cooling device according to claim 3 is characterized in that: The liquid storage buffer tank (1) is also provided with an outlet pressure sensor (10); A liquid filling and discharging port (21) is also provided on one side of the liquid storage buffer tank (1).

7. A lightweight and highly integrated vehicle-mounted liquid cooling device according to claim 6, characterized in that: The liquid storage buffer tank (1) is also provided with a control box (9), and a controller is provided inside the control box (9), and the controller adopts an automotive-grade single-chip microcomputer.

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