Heat dissipation and cooling method for automobile fuel cell

Abstract

The invention discloses a heat dissipation and cooling method for an automobile fuel cell. The heat dissipation and cooling method comprises the following steps: S1, arranging a cooling liquid circulation pipeline around an automobile fuel cell stack; s2, a cooling liquid pump is arranged in the cooling liquid circulation pipeline; s3, radiating fins are arranged in the cooling liquid circulation pipeline; s4, a cooling fan is arranged around the cooling fins, and the cooling efficiency is improved; s5, arranging a temperature sensor on the fuel cell stack, and monitoring the temperature of the fuel cell stack in real time; and S6, the temperature sensor is connected with a controller, and the controller receives a temperature signal sent by the temperature sensor and controls the working states of the cooling liquid pump and the cooling fan according to the temperature signal. According to the heat dissipation and cooling method for the automobile fuel cell, through the synergistic effect of liquid cooling and air cooling, heat generated by the automobile fuel cell can be quickly dissipated and cooled, the working temperature of the automobile fuel cell is effectively reduced, the service life of the automobile fuel cell is prolonged, the working performance of the automobile fuel cell is improved, and the use requirements of users are met.

Description

Technical Field

[0001] The invention relates to the technical field of automobile fuel cells, and in particular to a heat dissipation and temperature reduction method for automobile fuel cells. Background Art

[0002] With the improvement of environmental awareness and the intensification of energy crisis, automotive fuel cells, as an efficient and clean energy conversion device, have received more and more attention. However, automotive fuel cells generate a lot of heat during operation. If the heat cannot be dissipated and cooled in time and effectively, the performance and life of the fuel cell will be affected. Therefore, it is of great practical significance to study an efficient method for heat dissipation and cooling of automotive fuel cells. Summary of the invention

[0003] In order to solve the above technical problems, a method for heat dissipation and cooling of an automobile fuel cell is provided.

[0004] To achieve the above objectives, the following solutions are provided: A method for cooling down a fuel cell for an automobile comprises the following steps: S1. A coolant circulation pipeline is provided around the fuel cell stack of the vehicle, wherein the coolant circulation pipeline comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are respectively connected to the water inlet and the water outlet of the fuel cell stack; S2. A coolant pump is provided in the coolant circulation pipeline to drive the coolant to circulate in the coolant circulation pipeline; S3. A heat sink is provided in the coolant circulation pipeline to dissipate the heat in the coolant into the air; S4. A cooling fan is arranged around the heat sink to accelerate the flow of air around the heat sink and improve the heat dissipation efficiency; S5. A temperature sensor is provided on the fuel cell stack to monitor the temperature of the fuel cell stack in real time; S6. Connect the temperature sensor to the controller, the controller receives the temperature signal sent by the temperature sensor, and controls the working state of the coolant pump and the cooling fan according to the temperature signal.

[0005] Furthermore, the controller controls the working states of the coolant pump and the cooling fan according to the temperature signal as follows: When the temperature sensor detects that the temperature of the fuel cell stack is lower than the set minimum temperature threshold, the controller controls the coolant pump and the cooling fan to stop working; When the temperature sensor detects that the temperature of the fuel cell stack is higher than a set minimum temperature threshold and lower than a set maximum temperature threshold, the controller controls the coolant pump to work at low power and the cooling fan to work at low speed; When the temperature sensor detects that the temperature of the fuel cell stack is higher than the set maximum temperature threshold, the controller controls the coolant pump to operate at high power and the cooling fan to operate at high speed.

[0006] Furthermore, the coolant is deionized water or antifreeze.

[0007] Furthermore, the heat sink is an aluminum heat sink or a copper heat sink.

[0008] Furthermore, the heat dissipation fan is an axial flow fan or a centrifugal fan.

[0009] The working principle and advantages of the present invention are: the heat dissipation and cooling method of the automobile fuel cell can quickly dissipate and cool the heat generated by the automobile fuel cell through the synergistic effect of liquid cooling and air cooling, effectively reduce the operating temperature of the automobile fuel cell, improve the service life and working performance of the automobile fuel cell, and meet the user's usage needs. DETAILED DESCRIPTION

[0010] The following is a further detailed description through specific implementation methods: Embodiment 1

[0011] The automotive fuel cell heat dissipation and cooling system using the method comprises a coolant circulation pipeline, a coolant pump, a heat sink, a heat dissipation fan, a temperature sensor and a controller. The coolant circulation pipeline comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively connected to the water inlet and the water outlet of the fuel cell stack. The coolant pump is arranged in the coolant circulation pipeline, and is used to drive the coolant to circulate in the coolant circulation pipeline. The heat sink is arranged in the coolant circulation pipeline, and is used to dissipate the heat in the coolant into the air. The heat dissipation fan is arranged around the heat sink, and is used to accelerate the flow of air around the heat sink, and improve the heat dissipation efficiency. The temperature sensor is arranged on the fuel cell stack, and is used to monitor the temperature of the fuel cell stack in real time. The controller is respectively connected to the coolant pump, the heat dissipation fan and the temperature sensor, and is used to receive the temperature signal sent by the temperature sensor, and control the working state of the coolant pump and the heat dissipation fan according to the temperature signal.

[0012] In this embodiment, the controller is a single chip microcomputer. The coolant is deionized water. The heat sink is an aluminum heat sink. The cooling fan is an axial flow fan. The coolant circulation pipeline, the coolant pump, the heat sink, the cooling fan, the temperature sensor and the controller are all installed in the engine compartment of the car.

[0013] When working, the temperature sensor monitors the temperature of the fuel cell stack in real time and sends the temperature signal to the controller. When the temperature sensor detects that the temperature of the fuel cell stack is lower than the set minimum temperature threshold, the controller controls the coolant pump and the cooling fan to stop working. When the temperature sensor detects that the temperature of the fuel cell stack is higher than the set minimum temperature threshold and lower than the set maximum temperature threshold, the controller controls the coolant pump to work at low power and the cooling fan to work at low speed. When the temperature sensor detects that the temperature of the fuel cell stack is higher than the set maximum temperature threshold, the controller controls the coolant pump to work at high power and the cooling fan to work at high speed. Embodiment 2

[0014] The automotive fuel cell heat dissipation and cooling system using the method comprises a coolant circulation pipeline, a coolant pump, a heat sink, a heat dissipation fan, a temperature sensor and a controller. The coolant circulation pipeline comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively connected to the water inlet and the water outlet of the fuel cell stack. The coolant pump is arranged in the coolant circulation pipeline, and is used to drive the coolant to circulate in the coolant circulation pipeline. The heat sink is arranged in the coolant circulation pipeline, and is used to dissipate the heat in the coolant into the air. The heat dissipation fan is arranged around the heat sink, and is used to accelerate the flow of air around the heat sink, and improve the heat dissipation efficiency. The temperature sensor is arranged on the fuel cell stack, and is used to monitor the temperature of the fuel cell stack in real time. The controller is respectively connected to the coolant pump, the heat dissipation fan and the temperature sensor, and is used to receive the temperature signal sent by the temperature sensor, and control the working state of the coolant pump and the heat dissipation fan according to the temperature signal.

[0015] In this embodiment, the controller is a PLC. The coolant is an antifreeze. The heat sink is a copper heat sink. The cooling fan is a centrifugal fan. The coolant circulation pipeline, the coolant pump, the heat sink, the cooling fan, the temperature sensor and the controller are all installed in the trunk of the car.

[0016] When working, the temperature sensor monitors the temperature of the fuel cell stack in real time and sends the temperature signal to the controller. When the temperature sensor detects that the temperature of the fuel cell stack is lower than the set minimum temperature threshold, the controller controls the coolant pump and the cooling fan to stop working. When the temperature sensor detects that the temperature of the fuel cell stack is higher than the set minimum temperature threshold and lower than the set maximum temperature threshold, the controller controls the coolant pump to work at low power and the cooling fan to work at low speed. When the temperature sensor detects that the temperature of the fuel cell stack is higher than the set maximum temperature threshold, the controller controls the coolant pump to work at high power and the cooling fan to work at high speed.

[0017] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the applicability of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for cooling down a fuel cell for an automobile, characterized in that: The following steps are involved: S1. A coolant circulation pipeline is provided around the fuel cell stack of the vehicle, wherein the coolant circulation pipeline comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are respectively connected to the water inlet and the water outlet of the fuel cell stack; S2. A coolant pump is provided in the coolant circulation pipeline to drive the coolant to circulate in the coolant circulation pipeline; S3. A heat sink is provided in the coolant circulation pipeline to dissipate the heat in the coolant into the air; S4. A cooling fan is arranged around the heat sink to accelerate the flow of air around the heat sink and improve the heat dissipation efficiency; S5. A temperature sensor is provided on the fuel cell stack to monitor the temperature of the fuel cell stack in real time; S6. Connect the temperature sensor to the controller, the controller receives the temperature signal sent by the temperature sensor, and controls the working state of the coolant pump and the cooling fan according to the temperature signal.

2. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The controller controls the working status of the coolant pump and the cooling fan according to the temperature signal: When the temperature sensor detects that the temperature of the fuel cell stack is lower than the set minimum temperature threshold, the controller controls the coolant pump and the cooling fan to stop working; When the temperature sensor detects that the temperature of the fuel cell stack is higher than a set minimum temperature threshold and lower than a set maximum temperature threshold, the controller controls the coolant pump to work at low power and the cooling fan to work at low speed; When the temperature sensor detects that the temperature of the fuel cell stack is higher than the set maximum temperature threshold, the controller controls the coolant pump to operate at high power and the cooling fan to operate at high speed.

3. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The coolant is deionized water or antifreeze.

4. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The coolant is antifreeze.

5. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The heat sink is an aluminum heat sink.

6. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The heat sink is an aluminum heat sink or a copper heat sink.

7. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The heat dissipation fan is an axial flow fan.

8. The method for cooling down a fuel cell for an automobile according to claim 1, characterized in that: The heat dissipation fan is a centrifugal fan.