Electric automobile intelligent driving controller heat dissipation device based on loop heat pipe

Abstract

The utility model belongs to the technical field of electric automobile heat management, and relates to an electric automobile intelligent driving controller heat dissipation device based on a loop heat pipe, which comprises an evaporator and a condenser, the evaporator is in a flat plate shape, a heat-conducting medium circulates in the evaporator, a heating surface of the evaporator is arranged on a heat dissipation part of an electric automobile intelligent driving controller, and the condenser is in a cylindrical shape. A hollow structure in the shape of a cylindrical inner cavity is arranged in the cylindrical inner wall of the condenser, and a heat-conducting medium in the hollow structure and a heat-conducting medium in the evaporator circulate in a circulating manner; the condenser is arranged on a whole vehicle cooling liquid pipeline of the electric vehicle in a surrounding and sleeving mode, and the condenser inner cylinder communicates with the whole vehicle cooling liquid pipeline. The intelligent driving controller is cooled through spontaneous circulation after the loop heat pipe is heated, the length of a water pipe of the whole vehicle and the arrangement workload are reduced, the cost is reduced, the weight is reduced, the filling and emptying difficulty is reduced, and the working process is simplified.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle thermal management technology, and relates to a heat dissipation device for an electric vehicle intelligent driving controller based on a loop heat pipe. Background Technology

[0002] With the rapid development of electric vehicles, intelligent driving technology is receiving increasing attention. As a core component of electric vehicles, the intelligent driving controller is becoming increasingly sophisticated and complex. During operation, the controller generates a significant amount of heat. If this heat cannot be dissipated in time, it can lead to overheating or even malfunction, seriously impacting driving safety. Therefore, controlling the temperature of the core components of the intelligent driving controller within a safe range through efficient heat dissipation methods is a key technology for ensuring vehicle safety and the development of intelligent driving technology. Existing liquid cooling solutions typically involve placing coolant channels near the heat-generating components within the intelligent driving controller. The low-temperature coolant within these channels carries away the heat, thus controlling the temperature of the core components.

[0003] However, existing liquid cooling solutions for intelligent driving controllers have the following drawbacks:

[0004] 1. The intelligent driving controller needs to be equipped with a narrow flow channel. If the flow channel is too small, it will easily cause the system flow resistance to be too large, which will affect the system energy consumption.

[0005] 2. Due to the different placement of the intelligent driving controller, the narrow internal flow channels can easily cause poor cooling fluid filling and venting throughout the entire circuit, reducing the overall production efficiency on the production line; air accumulation in the narrow flow channels will cause heat transfer deterioration and increase the risk of overheating of the intelligent driving controller.

[0006] 3. Whether the heat dissipation channels of the intelligent driving control are connected in parallel or in series in the cooling loop, additional connecting water pipes are required, which increases the difficulty of layout and piping costs.

[0007] Therefore, a more efficient cooling device or method for intelligent driving controllers is needed to solve the above-mentioned technical problems. Utility Model Content

[0008] The technical solution adopted by this utility model to solve the technical problem is: a heat dissipation device for an electric vehicle intelligent driving controller based on a loop heat pipe, comprising: an evaporator and a condenser, wherein the liquid outlet of the evaporator is connected to the liquid inlet of the condenser through a steam pipe, and the liquid outlet of the condenser is connected to the liquid inlet of the evaporator through a condensation pipe; the evaporator is flat, and a heat-conducting medium flows inside the evaporator; the heated surface of the evaporator is thermally connected to the heat dissipation part of the electric vehicle intelligent driving controller, and the heat dissipation part of the evaporator is thermally connected to the heat-conducting medium flowing inside the evaporator;

[0009] The condenser is cylindrical, with a hollow cylindrical cavity inside its inner wall. The condenser has a liquid inlet and a liquid outlet. A heat-conducting medium flows inside the hollow cavity, and the heat-conducting medium inside the hollow cavity circulates with the heat-conducting medium in the evaporator. The condenser is wrapped around the vehicle's coolant piping, and the inner cylinder of the condenser is heat-conductingly connected to the vehicle's coolant piping.

[0010] Preferably, the evaporator is provided with a liquid storage chamber, a liquid suction core, and a steam channel. The liquid storage chamber is connected to one end of the evaporator inlet. The liquid suction core is parallel to the heating surface of the evaporator plate. The steam channel is sandwiched between the liquid suction core and the inner wall of the evaporator shell. The steam channel is connected to one end of the evaporator outlet. The liquid suction core isolates the liquid storage chamber and the steam channel from each other. The liquid suction core is connected to both the liquid storage chamber and the steam channel.

[0011] Preferably, the condenser inlet and condenser outlet are located on the cylindrical end face of the condenser.

[0012] Preferably, the condenser inlet and condenser outlet are located on the outer cylindrical surface of the condenser.

[0013] More preferably, the liquid inlet of the condenser is higher than the liquid outlet of the condenser.

[0014] Preferably, the hollow structure contains a turbulence-inducing structure.

[0015] Preferably, the condenser is integrally formed with the vehicle's coolant piping, and the inner cylinder of the condenser is used for the circulation of the vehicle's coolant.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes the spontaneous circulation characteristic of the loop heat pipe after heating to efficiently dissipate heat from the intelligent driving controller, reducing the energy consumption of the liquid cooling solution. This invention also reduces the number of water pipes in the vehicle, lowering costs and weight, simplifying the filling and emptying process, and streamlining the workflow. Furthermore, this invention reduces the difficulty of designing, manufacturing, and installing the intelligent driving controller by eliminating the liquid cooling flow channel, making the installation and maintenance of the intelligent driving controller more convenient and faster. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the evaporator of a heat dissipation device for an electric vehicle intelligent driving controller based on a loop heat pipe, according to this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the evaporator of this utility model;

[0020] Figure 3 This is a schematic diagram of the condenser of this utility model;

[0021] Figure 4 This is a cross-sectional schematic diagram of the condenser of this utility model;

[0022] Figure 5 This is a schematic diagram illustrating the operating principle of this utility model;

[0023] Figure 6 This is a schematic diagram of the evaporator structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the condenser structure of this utility model.

[0025] Among them, 1. Evaporator; 2. Steam pipeline; 3. Condenser; 4. Condensation pipeline; 5. Intelligent driving controller; 101. Liquid storage chamber; 102. Liquid suction core; 103. Steam channel; 301. Hollow structure; 302. Coolant flow channel; 303. Condenser inlet; 304. Condenser outlet. Detailed Implementation

[0026] The relevant technologies of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] like Figures 1-7 As shown, this embodiment of a heat dissipation device for an electric vehicle intelligent driving controller based on a loop heat pipe includes: an evaporator 1 and a condenser 3. The liquid outlet of the evaporator 1 is connected to the liquid inlet of the condenser 3 through a steam pipe 2, and the liquid outlet of the condenser 3 is connected to the liquid inlet of the evaporator 1 through a condensation pipe 4. The evaporator 1 is flat, and a heat-conducting medium flows inside the evaporator 1. The heated surface of the evaporator 1 is thermally connected to the heat dissipation part of the electric vehicle intelligent driving controller 5, and the heat dissipation part of the evaporator 1 is thermally connected to the heat-conducting medium flowing inside the evaporator 1. The intelligent driving controller is efficiently cooled by spontaneous circulation after being heated through the loop heat pipe.

[0028] The condenser 3 is cylindrical, and its inner wall has a hollow structure 301. The condenser 3 has a condenser inlet 303 and a condenser outlet 304. A heat-conducting medium flows inside the hollow structure 301, and the heat-conducting medium inside the hollow structure 301 circulates with the heat-conducting medium inside the evaporator 1. The condenser 3 is wrapped around the vehicle's coolant pipeline, and the inner cylinder of the condenser 3 is heat-conductingly connected to the vehicle's coolant pipeline. Heat exchange is performed between the condenser 3 and the vehicle's coolant pipeline. The condenser 3 separates the heat dissipation pipeline from the cooling pipeline by using a heat exchange without changing the coolant, so that the vehicle's coolant pipeline does not need to be routed to the intelligent driving controller.

[0029] Furthermore, the evaporator 1 is provided with a liquid storage chamber 101, a liquid suction core 102, and a steam channel 103. The liquid storage chamber 101 is connected to one end of the liquid inlet of the evaporator 1, the liquid suction core 102 is parallel to the flat heating surface of the evaporator 1, and the steam channel 103 is sandwiched between the liquid suction core 102 and the inner wall of the evaporator 1 shell.

[0030] The steam channel 103 is connected to one end of the liquid outlet of the evaporator 1. The liquid suction core 102 isolates the liquid storage chamber 101 and the steam channel 103 from each other. The liquid suction core 102 is connected to the liquid storage chamber 101 and the steam channel 103 respectively. By using the liquid suction core 102 to connect the liquid storage chamber 101 and the steam channel 103, and at the same time heating the liquid suction core 102 by the heating surface of the evaporator 1, the heat dissipation power of the loop heat pipe can be controlled automatically according to the heat dissipation and temperature of the intelligent driving controller.

[0031] Furthermore, the condenser inlet 303 and the condenser outlet 304 are located on the cylindrical end face of the condenser 3.

[0032] Furthermore, the condenser inlet 303 and the condenser outlet 304 are located on the outer cylindrical surface of the condenser 3.

[0033] Furthermore, the condenser inlet 303 is higher than the condenser outlet 304. The inlet is for low-temperature coolant, and the outlet is for high-temperature coolant. The higher inlet and outlet position is more conducive to coolant circulation.

[0034] Furthermore, the hollow structure 301 is provided with a turbulence structure to enhance heat transfer.

[0035] Furthermore, the condenser 3 is integrally formed with the vehicle's coolant piping, and the inner cylinder of the condenser 3 is used to circulate the vehicle's coolant. When the condenser 3 is integrally formed with the vehicle's coolant piping, installation and maintenance are more convenient. It is only necessary to connect the vapor pipe 2 and the condenser pipe 4 to the inlet and outlet ports of the condenser 3 on the vehicle's coolant piping.

[0036] Example

[0037] In this embodiment, Figure 1 The external structure of evaporator 1 is shown. Evaporator 1 is flat, and its outer surface can be closely attached to the heating surface of the intelligent driving controller, which facilitates the rapid transfer of heat from the intelligent driving controller and thus keeps the operating temperature of the intelligent driving controller within a reasonable range.

[0038] Figure 2 This is a cross-sectional view of evaporator 1. Evaporator 1 includes a liquid storage chamber 101, a liquid suction core 102, and a steam channel 103.

[0039] Figure 3 This is an outline drawing of condenser 3. Figure 4This is a cross-sectional view of condenser 3, where the hollow structure 301 is the condensation channel for the circulating working fluid within the loop heat pipe, and surrounds the vehicle's coolant channel 302. The condenser 3 is a water jacket structure, with the coolant channel 302 inside. The coolant channel 302 is connected to the vehicle's coolant piping and is powered by the vehicle's circulating water pump. This water jacket structure can be connected in series with a suitable circulation loop in the vehicle. Since the inner diameter of the water jacket can be the same as the inner diameter of the vehicle's coolant piping as needed, it solves the problem of excessive flow resistance caused by the narrow flow channels in traditional liquid-cooled intelligent driving controllers. The hollow structure 301 of the water jacket is equipped with a condenser inlet 303 and a condenser outlet 304 as inlets and outlets. The water jacket inlet is a steam inlet, and the water jacket outlet is the outlet for the condensed liquid circulating working fluid. The hollow structure 301 of the water jacket can also be equipped with a turbulence structure to enhance heat transfer as needed; the flow channel jacket in this embodiment is only an example.

[0040] Figure 5 This is a schematic diagram illustrating the operating principle of a cooling system for an intelligent driving controller based on a loop heat pipe. The loop heat pipe consists of an evaporator 1, a condenser 3, a steam pipe 2, and a condensation pipe 4. After the loop heat pipe is evacuated, it is filled with an appropriate amount of circulating working fluid. The selection of the circulating working fluid can be adapted according to the operating temperature required by the intelligent driving controller. The material of the loop heat pipe needs to be compatible with the circulating working fluid to avoid reactions between the circulating working fluid and the loop heat pipe material during use, which could produce non-condensable gases and affect heat exchange performance and product lifespan.

[0041] The operating principle of the loop heat pipe is as follows: After the evaporator 1 absorbs heat, the liquid working fluid in the steam channel 103 is converted into saturated steam and transported to the condenser line through the steam pipeline. Under the action of the condenser 3, the saturated steam is condensed into liquid and outputs heat. Then, the condensed liquid working fluid is transported to the liquid storage chamber 101 through the liquid pipeline and reabsorbed by the porous wick 102. This forms a working fluid circulation and heat transfer process.

[0042] The heat dissipation surface of the intelligent driving controller is placed on the surface of the loop heat pipe evaporator 1. Thermal grease is applied or a thermal pad is placed between the intelligent driving controller and the loop heat pipe evaporator 1 to reduce contact thermal resistance. The heat from the intelligent driving controller is transferred to the evaporator 1 through heat conduction, and the circulating working fluid in the evaporator 1 undergoes a phase change upon heating. The gaseous circulating working fluid after the heat absorption phase change enters the water jacket of the condenser 3 through the steam pipe 2. In the water jacket, heat is released to the coolant in the water jacket through indirect heat exchange with the wall, thereby condensing into a liquid circulating working fluid. The liquid circulating working fluid enters the liquid storage chamber 101 of the evaporator 1 through the condenser pipe 4. The liquid working fluid in the liquid storage chamber 101 enters the evaporator 1 under the capillary force of the liquid suction core 102 in the evaporator 1, thus forming a working fluid circulation and heat transfer process.

[0043] This embodiment utilizes the efficient heat transfer characteristics of a loop heat pipe to achieve efficient heat transfer within it. The loop heat pipe evaporator 1 is positioned on the heating surface of the intelligent driving controller, and the loop heat pipe condenser 3 is a water jacket with an inner diameter identical to that of the vehicle's cooling pipes. Heat transfer is achieved through the evaporation and condensation of the circulating working fluid within the loop heat pipe, eliminating the need for a water pump.

[0044] Because the intelligent driving controller does not have narrow coolant flow channels, the circulation resistance of traditional liquid cooling solutions is reduced, thus lowering system energy consumption. The intelligent driving controller also offers greater flexibility in its layout, eliminating the need for additional cooling water pipes, thereby reducing piping costs and layout complexity. The elimination of cooling flow channels within the intelligent driving controller also simplifies design and reduces its cost.

[0045] In summary, this invention utilizes a loop heat pipe to spontaneously circulate heat to cool the intelligent driving controller, reducing the number of water pipes in the vehicle, lowering costs and weight, simplifying the filling and emptying process, and streamlining the workflow. Furthermore, this invention reduces the difficulty of designing, manufacturing, and installing the intelligent driving controller by eliminating the liquid cooling channel, making installation and maintenance of the intelligent driving controller more convenient and efficient.

[0046] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A heat dissipation device for an electric vehicle intelligent driving controller based on a loop heat pipe, characterized in that, include: Evaporator (1) and condenser (3), the liquid outlet of the evaporator (1) is connected to the liquid inlet of the condenser (3) through a steam pipe (2), and the liquid outlet of the condenser (3) is connected to the liquid inlet of the evaporator (1) through a condensation pipe (4); The evaporator (1) is flat and a heat-conducting medium flows inside the evaporator (1). The heated surface of the evaporator (1) is thermally connected to the heat dissipation part of the electric vehicle intelligent driving controller (5). The heat dissipation part of the evaporator (1) is thermally connected to the heat-conducting medium flowing inside the evaporator (1). The condenser (3) is cylindrical, and a cylindrical hollow structure (301) is provided in the inner wall of the cylindrical condenser (3). The condenser (3) is provided with a condenser inlet (303) and a condenser outlet (304). A heat-conducting medium flows inside the hollow structure (301), and the heat-conducting medium inside the hollow structure (301) circulates with the heat-conducting medium inside the evaporator (1). The condenser (3) is sleeved around the vehicle's coolant pipeline, and the inner cylinder of the condenser (3) is connected to the vehicle's coolant pipeline.

2. The heat dissipating device for electric vehicle intelligent driving controller based on loop heat pipe according to claim 1, characterized in that, The evaporator (1) is provided with a liquid storage chamber (101), a liquid suction core (102), and a steam channel (103). The liquid storage chamber (101) is connected to one end of the liquid inlet of the evaporator (1). The liquid suction core (102) is parallel to the flat heating surface of the evaporator (1). The steam channel (103) is sandwiched between the liquid suction core (102) and the inner wall of the evaporator (1) shell. The steam channel (103) is connected to one end of the liquid outlet of the evaporator (1), and the liquid suction core (102) isolates the liquid storage chamber (101) and the steam channel (103) from each other. The liquid suction core (102) is connected to the liquid storage chamber (101) and the steam channel (103) respectively.

3. The heat dissipating device for electric vehicle intelligent driving controller based on loop heat pipe according to claim 1, characterized in that, The condenser inlet (303) and condenser outlet (304) are located on the cylindrical end face of the condenser (3).

4. The loop heat pipe based electric vehicle intelligent driving controller heat dissipation device of claim 1, wherein, The condenser inlet (303) and condenser outlet (304) are located on the outer cylindrical surface of the condenser (3).

5. The loop heat pipe based electric vehicle intelligent driving controller heat dissipation device according to claim 4, characterized in that, The liquid inlet (303) of the condenser is higher than the liquid outlet (304) of the condenser.

6. The loop heat pipe based electric vehicle intelligent driving controller heat sink device of claim 1, wherein, The hollow structure (301) is equipped with a turbulence structure.

7. The loop heat pipe based electric vehicle intelligent driving controller heat sink device of claim 1, wherein, The condenser (3) is integrally formed with the vehicle coolant pipeline, and the inner cylinder of the condenser (3) is used for the flow of vehicle coolant.

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